- /* start-sanitize-armelf */
/* 32-bit ELF support for ARM
- Copyright 1993, 1995, 1998 Free Software Foundation, Inc.
+ Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
+ Free Software Foundation, Inc.
This file is part of BFD, the Binary File Descriptor library.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+ Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
+#include "elf/arm.h"
#include "bfd.h"
#include "sysdep.h"
#include "libbfd.h"
#include "elf-bfd.h"
-#include "elf/arm.h"
+#ifndef NUM_ELEM
+#define NUM_ELEM(a) (sizeof (a) / (sizeof (a)[0]))
+#endif
+
+#define elf_info_to_howto 0
+#define elf_info_to_howto_rel elf32_arm_info_to_howto
+
+#define ARM_ELF_ABI_VERSION 0
+#define ARM_ELF_OS_ABI_VERSION ELFOSABI_ARM
+
+/* Note: code such as elf32_arm_reloc_type_lookup expect to use e.g.
+ R_ARM_PC24 as an index into this, and find the R_ARM_PC24 HOWTO
+ in that slot. */
+
+static reloc_howto_type elf32_arm_howto_table_1[] =
+{
+ /* No relocation */
+ HOWTO (R_ARM_NONE, /* type */
+ 0, /* rightshift */
+ 0, /* size (0 = byte, 1 = short, 2 = long) */
+ 0, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_NONE", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_ARM_PC24, /* type */
+ 2, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 24, /* bitsize */
+ TRUE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_PC24", /* name */
+ FALSE, /* partial_inplace */
+ 0x00ffffff, /* src_mask */
+ 0x00ffffff, /* dst_mask */
+ TRUE), /* pcrel_offset */
+
+ /* 32 bit absolute */
+ HOWTO (R_ARM_ABS32, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_ABS32", /* name */
+ FALSE, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* standard 32bit pc-relative reloc */
+ HOWTO (R_ARM_REL32, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ TRUE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_REL32", /* name */
+ FALSE, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ TRUE), /* pcrel_offset */
+
+ /* 8 bit absolute - R_ARM_LDR_PC_G0 in AAELF */
+ HOWTO (R_ARM_PC13, /* type */
+ 0, /* rightshift */
+ 0, /* size (0 = byte, 1 = short, 2 = long) */
+ 8, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_PC13", /* name */
+ FALSE, /* partial_inplace */
+ 0x000000ff, /* src_mask */
+ 0x000000ff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* 16 bit absolute */
+ HOWTO (R_ARM_ABS16, /* type */
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_ABS16", /* name */
+ FALSE, /* partial_inplace */
+ 0x0000ffff, /* src_mask */
+ 0x0000ffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* 12 bit absolute */
+ HOWTO (R_ARM_ABS12, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 12, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_ABS12", /* name */
+ FALSE, /* partial_inplace */
+ 0x000008ff, /* src_mask */
+ 0x000008ff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_ARM_THM_ABS5, /* type */
+ 6, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 5, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_THM_ABS5", /* name */
+ FALSE, /* partial_inplace */
+ 0x000007e0, /* src_mask */
+ 0x000007e0, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* 8 bit absolute */
+ HOWTO (R_ARM_ABS8, /* type */
+ 0, /* rightshift */
+ 0, /* size (0 = byte, 1 = short, 2 = long) */
+ 8, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_ABS8", /* name */
+ FALSE, /* partial_inplace */
+ 0x000000ff, /* src_mask */
+ 0x000000ff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_ARM_SBREL32, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_SBREL32", /* name */
+ FALSE, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* FIXME: Has two more bits of offset in Thumb32. */
+ HOWTO (R_ARM_THM_CALL, /* type */
+ 1, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 23, /* bitsize */
+ TRUE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_THM_CALL", /* name */
+ FALSE, /* partial_inplace */
+ 0x07ff07ff, /* src_mask */
+ 0x07ff07ff, /* dst_mask */
+ TRUE), /* pcrel_offset */
+
+ HOWTO (R_ARM_THM_PC8, /* type */
+ 1, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 8, /* bitsize */
+ TRUE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_THM_PC8", /* name */
+ FALSE, /* partial_inplace */
+ 0x000000ff, /* src_mask */
+ 0x000000ff, /* dst_mask */
+ TRUE), /* pcrel_offset */
+
+ HOWTO (R_ARM_BREL_ADJ, /* type */
+ 1, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_BREL_ADJ", /* name */
+ FALSE, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_ARM_SWI24, /* type */
+ 0, /* rightshift */
+ 0, /* size (0 = byte, 1 = short, 2 = long) */
+ 0, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_SWI24", /* name */
+ FALSE, /* partial_inplace */
+ 0x00000000, /* src_mask */
+ 0x00000000, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_ARM_THM_SWI8, /* type */
+ 0, /* rightshift */
+ 0, /* size (0 = byte, 1 = short, 2 = long) */
+ 0, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_SWI8", /* name */
+ FALSE, /* partial_inplace */
+ 0x00000000, /* src_mask */
+ 0x00000000, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* BLX instruction for the ARM. */
+ HOWTO (R_ARM_XPC25, /* type */
+ 2, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 25, /* bitsize */
+ TRUE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_XPC25", /* name */
+ FALSE, /* partial_inplace */
+ 0x00ffffff, /* src_mask */
+ 0x00ffffff, /* dst_mask */
+ TRUE), /* pcrel_offset */
+
+ /* BLX instruction for the Thumb. */
+ HOWTO (R_ARM_THM_XPC22, /* type */
+ 2, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 22, /* bitsize */
+ TRUE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_THM_XPC22", /* name */
+ FALSE, /* partial_inplace */
+ 0x07ff07ff, /* src_mask */
+ 0x07ff07ff, /* dst_mask */
+ TRUE), /* pcrel_offset */
+
+ /* Dynamic TLS relocations. */
+
+ HOWTO (R_ARM_TLS_DTPMOD32, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_TLS_DTPMOD32", /* name */
+ TRUE, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_ARM_TLS_DTPOFF32, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_TLS_DTPOFF32", /* name */
+ TRUE, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_ARM_TLS_TPOFF32, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_TLS_TPOFF32", /* name */
+ TRUE, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* Relocs used in ARM Linux */
+
+ HOWTO (R_ARM_COPY, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_COPY", /* name */
+ TRUE, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_ARM_GLOB_DAT, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_GLOB_DAT", /* name */
+ TRUE, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_ARM_JUMP_SLOT, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_JUMP_SLOT", /* name */
+ TRUE, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_ARM_RELATIVE, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_RELATIVE", /* name */
+ TRUE, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_ARM_GOTOFF32, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_GOTOFF32", /* name */
+ TRUE, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_ARM_GOTPC, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ TRUE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_GOTPC", /* name */
+ TRUE, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ TRUE), /* pcrel_offset */
+
+ HOWTO (R_ARM_GOT32, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_GOT32", /* name */
+ TRUE, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_ARM_PLT32, /* type */
+ 2, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 24, /* bitsize */
+ TRUE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_PLT32", /* name */
+ FALSE, /* partial_inplace */
+ 0x00ffffff, /* src_mask */
+ 0x00ffffff, /* dst_mask */
+ TRUE), /* pcrel_offset */
+
+ HOWTO (R_ARM_CALL, /* type */
+ 2, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 24, /* bitsize */
+ TRUE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_CALL", /* name */
+ FALSE, /* partial_inplace */
+ 0x00ffffff, /* src_mask */
+ 0x00ffffff, /* dst_mask */
+ TRUE), /* pcrel_offset */
+
+ HOWTO (R_ARM_JUMP24, /* type */
+ 2, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 24, /* bitsize */
+ TRUE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_JUMP24", /* name */
+ FALSE, /* partial_inplace */
+ 0x00ffffff, /* src_mask */
+ 0x00ffffff, /* dst_mask */
+ TRUE), /* pcrel_offset */
+
+ HOWTO (R_ARM_THM_JUMP24, /* type */
+ 1, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 24, /* bitsize */
+ TRUE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_THM_JUMP24", /* name */
+ FALSE, /* partial_inplace */
+ 0x07ff2fff, /* src_mask */
+ 0x07ff2fff, /* dst_mask */
+ TRUE), /* pcrel_offset */
+
+ HOWTO (R_ARM_BASE_ABS, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_BASE_ABS", /* name */
+ FALSE, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_ARM_ALU_PCREL7_0, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 12, /* bitsize */
+ TRUE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_ALU_PCREL_7_0", /* name */
+ FALSE, /* partial_inplace */
+ 0x00000fff, /* src_mask */
+ 0x00000fff, /* dst_mask */
+ TRUE), /* pcrel_offset */
+
+ HOWTO (R_ARM_ALU_PCREL15_8, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 12, /* bitsize */
+ TRUE, /* pc_relative */
+ 8, /* bitpos */
+ complain_overflow_dont,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_ALU_PCREL_15_8",/* name */
+ FALSE, /* partial_inplace */
+ 0x00000fff, /* src_mask */
+ 0x00000fff, /* dst_mask */
+ TRUE), /* pcrel_offset */
+
+ HOWTO (R_ARM_ALU_PCREL23_15, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 12, /* bitsize */
+ TRUE, /* pc_relative */
+ 16, /* bitpos */
+ complain_overflow_dont,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_ALU_PCREL_23_15",/* name */
+ FALSE, /* partial_inplace */
+ 0x00000fff, /* src_mask */
+ 0x00000fff, /* dst_mask */
+ TRUE), /* pcrel_offset */
+
+ HOWTO (R_ARM_LDR_SBREL_11_0, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 12, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_LDR_SBREL_11_0",/* name */
+ FALSE, /* partial_inplace */
+ 0x00000fff, /* src_mask */
+ 0x00000fff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_ARM_ALU_SBREL_19_12, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 8, /* bitsize */
+ FALSE, /* pc_relative */
+ 12, /* bitpos */
+ complain_overflow_dont,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_ALU_SBREL_19_12",/* name */
+ FALSE, /* partial_inplace */
+ 0x000ff000, /* src_mask */
+ 0x000ff000, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_ARM_ALU_SBREL_27_20, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 8, /* bitsize */
+ FALSE, /* pc_relative */
+ 20, /* bitpos */
+ complain_overflow_dont,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_ALU_SBREL_27_20",/* name */
+ FALSE, /* partial_inplace */
+ 0x0ff00000, /* src_mask */
+ 0x0ff00000, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_ARM_TARGET1, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_TARGET1", /* name */
+ FALSE, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_ARM_ROSEGREL32, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_ROSEGREL32", /* name */
+ FALSE, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_ARM_V4BX, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_V4BX", /* name */
+ FALSE, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_ARM_TARGET2, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_TARGET2", /* name */
+ FALSE, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ TRUE), /* pcrel_offset */
+
+ HOWTO (R_ARM_PREL31, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 31, /* bitsize */
+ TRUE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_PREL31", /* name */
+ FALSE, /* partial_inplace */
+ 0x7fffffff, /* src_mask */
+ 0x7fffffff, /* dst_mask */
+ TRUE), /* pcrel_offset */
+
+ HOWTO (R_ARM_MOVW_ABS_NC, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_MOVW_ABS_NC", /* name */
+ FALSE, /* partial_inplace */
+ 0x0000ffff, /* src_mask */
+ 0x0000ffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_ARM_MOVT_ABS, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_MOVT_ABS", /* name */
+ FALSE, /* partial_inplace */
+ 0x0000ffff, /* src_mask */
+ 0x0000ffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_ARM_MOVW_PREL_NC, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ TRUE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_MOVW_PREL_NC", /* name */
+ FALSE, /* partial_inplace */
+ 0x0000ffff, /* src_mask */
+ 0x0000ffff, /* dst_mask */
+ TRUE), /* pcrel_offset */
+
+ HOWTO (R_ARM_MOVT_PREL, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ TRUE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_MOVT_PREL", /* name */
+ FALSE, /* partial_inplace */
+ 0x0000ffff, /* src_mask */
+ 0x0000ffff, /* dst_mask */
+ TRUE), /* pcrel_offset */
+
+ HOWTO (R_ARM_THM_MOVW_ABS_NC, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_THM_MOVW_ABS_NC",/* name */
+ FALSE, /* partial_inplace */
+ 0x040f70ff, /* src_mask */
+ 0x040f70ff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_ARM_THM_MOVT_ABS, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_THM_MOVT_ABS", /* name */
+ FALSE, /* partial_inplace */
+ 0x040f70ff, /* src_mask */
+ 0x040f70ff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_ARM_THM_MOVW_PREL_NC,/* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ TRUE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_THM_MOVW_PREL_NC",/* name */
+ FALSE, /* partial_inplace */
+ 0x040f70ff, /* src_mask */
+ 0x040f70ff, /* dst_mask */
+ TRUE), /* pcrel_offset */
+
+ HOWTO (R_ARM_THM_MOVT_PREL, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ TRUE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_THM_MOVT_PREL", /* name */
+ FALSE, /* partial_inplace */
+ 0x040f70ff, /* src_mask */
+ 0x040f70ff, /* dst_mask */
+ TRUE), /* pcrel_offset */
+
+ HOWTO (R_ARM_THM_JUMP19, /* type */
+ 1, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 19, /* bitsize */
+ TRUE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_THM_JUMP19", /* name */
+ FALSE, /* partial_inplace */
+ 0x043f2fff, /* src_mask */
+ 0x043f2fff, /* dst_mask */
+ TRUE), /* pcrel_offset */
+
+ HOWTO (R_ARM_THM_JUMP6, /* type */
+ 1, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 6, /* bitsize */
+ TRUE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_unsigned,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_THM_JUMP6", /* name */
+ FALSE, /* partial_inplace */
+ 0x02f8, /* src_mask */
+ 0x02f8, /* dst_mask */
+ TRUE), /* pcrel_offset */
+
+ /* These are declared as 13-bit signed relocations because we can
+ address -4095 .. 4095(base) by altering ADDW to SUBW or vice
+ versa. */
+ HOWTO (R_ARM_THM_ALU_PREL_11_0,/* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 13, /* bitsize */
+ TRUE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_THM_ALU_PREL_11_0",/* name */
+ FALSE, /* partial_inplace */
+ 0x040070ff, /* src_mask */
+ 0x040070ff, /* dst_mask */
+ TRUE), /* pcrel_offset */
+
+ HOWTO (R_ARM_THM_PC12, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 13, /* bitsize */
+ TRUE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_THM_PC12", /* name */
+ FALSE, /* partial_inplace */
+ 0x040070ff, /* src_mask */
+ 0x040070ff, /* dst_mask */
+ TRUE), /* pcrel_offset */
+
+ HOWTO (R_ARM_ABS32_NOI, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_ABS32_NOI", /* name */
+ FALSE, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_ARM_REL32_NOI, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ TRUE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_REL32_NOI", /* name */
+ FALSE, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+};
+
+/* Relocations 57 .. 83 are the "group relocations" which we do not
+ support. */
+
+static reloc_howto_type elf32_arm_howto_table_2[] =
+{
+ HOWTO (R_ARM_MOVW_BREL_NC, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_MOVW_BREL_NC", /* name */
+ FALSE, /* partial_inplace */
+ 0x0000ffff, /* src_mask */
+ 0x0000ffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_ARM_MOVT_BREL, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_MOVT_BREL", /* name */
+ FALSE, /* partial_inplace */
+ 0x0000ffff, /* src_mask */
+ 0x0000ffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_ARM_MOVW_BREL, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_MOVW_BREL", /* name */
+ FALSE, /* partial_inplace */
+ 0x0000ffff, /* src_mask */
+ 0x0000ffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_ARM_THM_MOVW_BREL_NC,/* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_THM_MOVW_BREL_NC",/* name */
+ FALSE, /* partial_inplace */
+ 0x040f70ff, /* src_mask */
+ 0x040f70ff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_ARM_THM_MOVT_BREL, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_THM_MOVT_BREL", /* name */
+ FALSE, /* partial_inplace */
+ 0x040f70ff, /* src_mask */
+ 0x040f70ff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_ARM_THM_MOVW_BREL, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_THM_MOVW_BREL", /* name */
+ FALSE, /* partial_inplace */
+ 0x040f70ff, /* src_mask */
+ 0x040f70ff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ EMPTY_HOWTO (90), /* unallocated */
+ EMPTY_HOWTO (91),
+ EMPTY_HOWTO (92),
+ EMPTY_HOWTO (93),
+
+ HOWTO (R_ARM_PLT32_ABS, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_PLT32_ABS", /* name */
+ FALSE, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_ARM_GOT_ABS, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_GOT_ABS", /* name */
+ FALSE, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_ARM_GOT_PREL, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ TRUE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_GOT_PREL", /* name */
+ FALSE, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ TRUE), /* pcrel_offset */
+
+ HOWTO (R_ARM_GOT_BREL12, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 12, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_GOT_BREL12", /* name */
+ FALSE, /* partial_inplace */
+ 0x00000fff, /* src_mask */
+ 0x00000fff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_ARM_GOTOFF12, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 12, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_GOTOFF12", /* name */
+ FALSE, /* partial_inplace */
+ 0x00000fff, /* src_mask */
+ 0x00000fff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ EMPTY_HOWTO (R_ARM_GOTRELAX), /* reserved for future GOT-load optimizations */
+
+ /* GNU extension to record C++ vtable member usage */
+ HOWTO (R_ARM_GNU_VTENTRY, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 0, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ _bfd_elf_rel_vtable_reloc_fn, /* special_function */
+ "R_ARM_GNU_VTENTRY", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* GNU extension to record C++ vtable hierarchy */
+ HOWTO (R_ARM_GNU_VTINHERIT, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 0, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ NULL, /* special_function */
+ "R_ARM_GNU_VTINHERIT", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_ARM_THM_JUMP11, /* type */
+ 1, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 11, /* bitsize */
+ TRUE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_THM_JUMP11", /* name */
+ FALSE, /* partial_inplace */
+ 0x000007ff, /* src_mask */
+ 0x000007ff, /* dst_mask */
+ TRUE), /* pcrel_offset */
+
+ HOWTO (R_ARM_THM_JUMP8, /* type */
+ 1, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 8, /* bitsize */
+ TRUE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_THM_JUMP8", /* name */
+ FALSE, /* partial_inplace */
+ 0x000000ff, /* src_mask */
+ 0x000000ff, /* dst_mask */
+ TRUE), /* pcrel_offset */
+
+ /* TLS relocations */
+ HOWTO (R_ARM_TLS_GD32, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield,/* complain_on_overflow */
+ NULL, /* special_function */
+ "R_ARM_TLS_GD32", /* name */
+ TRUE, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_ARM_TLS_LDM32, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_TLS_LDM32", /* name */
+ TRUE, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_ARM_TLS_LDO32, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_TLS_LDO32", /* name */
+ TRUE, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_ARM_TLS_IE32, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield,/* complain_on_overflow */
+ NULL, /* special_function */
+ "R_ARM_TLS_IE32", /* name */
+ TRUE, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_ARM_TLS_LE32, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_TLS_LE32", /* name */
+ TRUE, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_ARM_TLS_LDO12, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 12, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_TLS_LDO12", /* name */
+ FALSE, /* partial_inplace */
+ 0x00000fff, /* src_mask */
+ 0x00000fff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_ARM_TLS_LE12, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 12, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_TLS_LE12", /* name */
+ FALSE, /* partial_inplace */
+ 0x00000fff, /* src_mask */
+ 0x00000fff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_ARM_TLS_IE12GP, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 12, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_TLS_IE12GP", /* name */
+ FALSE, /* partial_inplace */
+ 0x00000fff, /* src_mask */
+ 0x00000fff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+};
+
+/* 112-127 private relocations
+ 128 R_ARM_ME_TOO, obsolete
+ 129-255 unallocated in AAELF.
+
+ 249-255 extended, currently unused, relocations: */
+
+static reloc_howto_type elf32_arm_howto_table_3[4] =
+{
+ HOWTO (R_ARM_RREL32, /* type */
+ 0, /* rightshift */
+ 0, /* size (0 = byte, 1 = short, 2 = long) */
+ 0, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_RREL32", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_ARM_RABS32, /* type */
+ 0, /* rightshift */
+ 0, /* size (0 = byte, 1 = short, 2 = long) */
+ 0, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_RABS32", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_ARM_RPC24, /* type */
+ 0, /* rightshift */
+ 0, /* size (0 = byte, 1 = short, 2 = long) */
+ 0, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_RPC24", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_ARM_RBASE, /* type */
+ 0, /* rightshift */
+ 0, /* size (0 = byte, 1 = short, 2 = long) */
+ 0, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_ARM_RBASE", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0, /* dst_mask */
+ FALSE) /* pcrel_offset */
+};
+
+static reloc_howto_type *
+elf32_arm_howto_from_type (unsigned int r_type)
+{
+ if (r_type < NUM_ELEM (elf32_arm_howto_table_1))
+ return &elf32_arm_howto_table_1[r_type];
+
+ if (r_type >= R_ARM_MOVW_BREL_NC
+ && r_type < R_ARM_MOVW_BREL_NC + NUM_ELEM (elf32_arm_howto_table_2))
+ return &elf32_arm_howto_table_2[r_type - R_ARM_MOVW_BREL_NC];
+
+ if (r_type >= R_ARM_RREL32
+ && r_type < R_ARM_RREL32 + NUM_ELEM (elf32_arm_howto_table_2))
+ return &elf32_arm_howto_table_3[r_type - R_ARM_RREL32];
+
+ return NULL;
+}
+
+static void
+elf32_arm_info_to_howto (bfd * abfd ATTRIBUTE_UNUSED, arelent * bfd_reloc,
+ Elf_Internal_Rela * elf_reloc)
+{
+ unsigned int r_type;
+
+ r_type = ELF32_R_TYPE (elf_reloc->r_info);
+ bfd_reloc->howto = elf32_arm_howto_from_type (r_type);
+}
+
+struct elf32_arm_reloc_map
+ {
+ bfd_reloc_code_real_type bfd_reloc_val;
+ unsigned char elf_reloc_val;
+ };
+
+/* All entries in this list must also be present in elf32_arm_howto_table. */
+static const struct elf32_arm_reloc_map elf32_arm_reloc_map[] =
+ {
+ {BFD_RELOC_NONE, R_ARM_NONE},
+ {BFD_RELOC_ARM_PCREL_BRANCH, R_ARM_PC24},
+ {BFD_RELOC_ARM_PCREL_BLX, R_ARM_XPC25},
+ {BFD_RELOC_THUMB_PCREL_BLX, R_ARM_THM_XPC22},
+ {BFD_RELOC_32, R_ARM_ABS32},
+ {BFD_RELOC_32_PCREL, R_ARM_REL32},
+ {BFD_RELOC_8, R_ARM_ABS8},
+ {BFD_RELOC_16, R_ARM_ABS16},
+ {BFD_RELOC_ARM_OFFSET_IMM, R_ARM_ABS12},
+ {BFD_RELOC_ARM_THUMB_OFFSET, R_ARM_THM_ABS5},
+ {BFD_RELOC_THUMB_PCREL_BRANCH25, R_ARM_THM_JUMP24},
+ {BFD_RELOC_THUMB_PCREL_BRANCH23, R_ARM_THM_CALL},
+ {BFD_RELOC_THUMB_PCREL_BRANCH12, R_ARM_THM_JUMP11},
+ {BFD_RELOC_THUMB_PCREL_BRANCH20, R_ARM_THM_JUMP19},
+ {BFD_RELOC_THUMB_PCREL_BRANCH9, R_ARM_THM_JUMP8},
+ {BFD_RELOC_THUMB_PCREL_BRANCH7, R_ARM_THM_JUMP6},
+ {BFD_RELOC_ARM_GLOB_DAT, R_ARM_GLOB_DAT},
+ {BFD_RELOC_ARM_JUMP_SLOT, R_ARM_JUMP_SLOT},
+ {BFD_RELOC_ARM_RELATIVE, R_ARM_RELATIVE},
+ {BFD_RELOC_ARM_GOTOFF, R_ARM_GOTOFF32},
+ {BFD_RELOC_ARM_GOTPC, R_ARM_GOTPC},
+ {BFD_RELOC_ARM_GOT32, R_ARM_GOT32},
+ {BFD_RELOC_ARM_PLT32, R_ARM_PLT32},
+ {BFD_RELOC_ARM_TARGET1, R_ARM_TARGET1},
+ {BFD_RELOC_ARM_ROSEGREL32, R_ARM_ROSEGREL32},
+ {BFD_RELOC_ARM_SBREL32, R_ARM_SBREL32},
+ {BFD_RELOC_ARM_PREL31, R_ARM_PREL31},
+ {BFD_RELOC_ARM_TARGET2, R_ARM_TARGET2},
+ {BFD_RELOC_ARM_PLT32, R_ARM_PLT32},
+ {BFD_RELOC_ARM_TLS_GD32, R_ARM_TLS_GD32},
+ {BFD_RELOC_ARM_TLS_LDO32, R_ARM_TLS_LDO32},
+ {BFD_RELOC_ARM_TLS_LDM32, R_ARM_TLS_LDM32},
+ {BFD_RELOC_ARM_TLS_DTPMOD32, R_ARM_TLS_DTPMOD32},
+ {BFD_RELOC_ARM_TLS_DTPOFF32, R_ARM_TLS_DTPOFF32},
+ {BFD_RELOC_ARM_TLS_TPOFF32, R_ARM_TLS_TPOFF32},
+ {BFD_RELOC_ARM_TLS_IE32, R_ARM_TLS_IE32},
+ {BFD_RELOC_ARM_TLS_LE32, R_ARM_TLS_LE32},
+ {BFD_RELOC_VTABLE_INHERIT, R_ARM_GNU_VTINHERIT},
+ {BFD_RELOC_VTABLE_ENTRY, R_ARM_GNU_VTENTRY},
+ };
+
+static reloc_howto_type *
+elf32_arm_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
+ bfd_reloc_code_real_type code)
+{
+ unsigned int i;
+ for (i = 0; i < NUM_ELEM (elf32_arm_reloc_map); i ++)
+ if (elf32_arm_reloc_map[i].bfd_reloc_val == code)
+ return elf32_arm_howto_from_type (elf32_arm_reloc_map[i].elf_reloc_val);
+
+ return NULL;
+}
+
+/* Support for core dump NOTE sections */
+static bfd_boolean
+elf32_arm_nabi_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
+{
+ int offset;
+ size_t size;
+
+ switch (note->descsz)
+ {
+ default:
+ return FALSE;
+
+ case 148: /* Linux/ARM 32-bit*/
+ /* pr_cursig */
+ elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
+
+ /* pr_pid */
+ elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
+
+ /* pr_reg */
+ offset = 72;
+ size = 72;
+
+ break;
+ }
+
+ /* Make a ".reg/999" section. */
+ return _bfd_elfcore_make_pseudosection (abfd, ".reg",
+ size, note->descpos + offset);
+}
+
+static bfd_boolean
+elf32_arm_nabi_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
+{
+ switch (note->descsz)
+ {
+ default:
+ return FALSE;
+
+ case 124: /* Linux/ARM elf_prpsinfo */
+ elf_tdata (abfd)->core_program
+ = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
+ elf_tdata (abfd)->core_command
+ = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
+ }
+
+ /* Note that for some reason, a spurious space is tacked
+ onto the end of the args in some (at least one anyway)
+ implementations, so strip it off if it exists. */
+
+ {
+ char *command = elf_tdata (abfd)->core_command;
+ int n = strlen (command);
+
+ if (0 < n && command[n - 1] == ' ')
+ command[n - 1] = '\0';
+ }
+
+ return TRUE;
+}
+
+#define TARGET_LITTLE_SYM bfd_elf32_littlearm_vec
+#define TARGET_LITTLE_NAME "elf32-littlearm"
+#define TARGET_BIG_SYM bfd_elf32_bigarm_vec
+#define TARGET_BIG_NAME "elf32-bigarm"
+
+#define elf_backend_grok_prstatus elf32_arm_nabi_grok_prstatus
+#define elf_backend_grok_psinfo elf32_arm_nabi_grok_psinfo
+
+typedef unsigned long int insn32;
+typedef unsigned short int insn16;
+
+/* In lieu of proper flags, assume all EABIv4 objects are interworkable. */
+#define INTERWORK_FLAG(abfd) \
+ (EF_ARM_EABI_VERSION (elf_elfheader (abfd)->e_flags) == EF_ARM_EABI_VER4 \
+ || (elf_elfheader (abfd)->e_flags & EF_ARM_INTERWORK))
+
+/* The linker script knows the section names for placement.
+ The entry_names are used to do simple name mangling on the stubs.
+ Given a function name, and its type, the stub can be found. The
+ name can be changed. The only requirement is the %s be present. */
+#define THUMB2ARM_GLUE_SECTION_NAME ".glue_7t"
+#define THUMB2ARM_GLUE_ENTRY_NAME "__%s_from_thumb"
+
+#define ARM2THUMB_GLUE_SECTION_NAME ".glue_7"
+#define ARM2THUMB_GLUE_ENTRY_NAME "__%s_from_arm"
+
+/* The name of the dynamic interpreter. This is put in the .interp
+ section. */
+#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
+
+#ifdef FOUR_WORD_PLT
+
+/* The first entry in a procedure linkage table looks like
+ this. It is set up so that any shared library function that is
+ called before the relocation has been set up calls the dynamic
+ linker first. */
+static const bfd_vma elf32_arm_plt0_entry [] =
+ {
+ 0xe52de004, /* str lr, [sp, #-4]! */
+ 0xe59fe010, /* ldr lr, [pc, #16] */
+ 0xe08fe00e, /* add lr, pc, lr */
+ 0xe5bef008, /* ldr pc, [lr, #8]! */
+ };
+
+/* Subsequent entries in a procedure linkage table look like
+ this. */
+static const bfd_vma elf32_arm_plt_entry [] =
+ {
+ 0xe28fc600, /* add ip, pc, #NN */
+ 0xe28cca00, /* add ip, ip, #NN */
+ 0xe5bcf000, /* ldr pc, [ip, #NN]! */
+ 0x00000000, /* unused */
+ };
+
+#else
+
+/* The first entry in a procedure linkage table looks like
+ this. It is set up so that any shared library function that is
+ called before the relocation has been set up calls the dynamic
+ linker first. */
+static const bfd_vma elf32_arm_plt0_entry [] =
+ {
+ 0xe52de004, /* str lr, [sp, #-4]! */
+ 0xe59fe004, /* ldr lr, [pc, #4] */
+ 0xe08fe00e, /* add lr, pc, lr */
+ 0xe5bef008, /* ldr pc, [lr, #8]! */
+ 0x00000000, /* &GOT[0] - . */
+ };
+
+/* Subsequent entries in a procedure linkage table look like
+ this. */
+static const bfd_vma elf32_arm_plt_entry [] =
+ {
+ 0xe28fc600, /* add ip, pc, #0xNN00000 */
+ 0xe28cca00, /* add ip, ip, #0xNN000 */
+ 0xe5bcf000, /* ldr pc, [ip, #0xNNN]! */
+ };
+
+#endif
+
+/* An initial stub used if the PLT entry is referenced from Thumb code. */
+#define PLT_THUMB_STUB_SIZE 4
+static const bfd_vma elf32_arm_plt_thumb_stub [] =
+ {
+ 0x4778, /* bx pc */
+ 0x46c0 /* nop */
+ };
+
+/* The entries in a PLT when using a DLL-based target with multiple
+ address spaces. */
+static const bfd_vma elf32_arm_symbian_plt_entry [] =
+ {
+ 0xe51ff004, /* ldr pc, [pc, #-4] */
+ 0x00000000, /* dcd R_ARM_GLOB_DAT(X) */
+ };
+
+/* Used to build a map of a section. This is required for mixed-endian
+ code/data. */
+
+typedef struct elf32_elf_section_map
+{
+ bfd_vma vma;
+ char type;
+}
+elf32_arm_section_map;
+
+typedef struct _arm_elf_section_data
+{
+ struct bfd_elf_section_data elf;
+ unsigned int mapcount;
+ elf32_arm_section_map *map;
+}
+_arm_elf_section_data;
+
+#define elf32_arm_section_data(sec) \
+ ((_arm_elf_section_data *) elf_section_data (sec))
+
+/* The size of the thread control block. */
+#define TCB_SIZE 8
+
+struct elf32_arm_obj_tdata
+{
+ struct elf_obj_tdata root;
+
+ /* tls_type for each local got entry. */
+ char *local_got_tls_type;
+};
+
+#define elf32_arm_tdata(abfd) \
+ ((struct elf32_arm_obj_tdata *) (abfd)->tdata.any)
+
+#define elf32_arm_local_got_tls_type(abfd) \
+ (elf32_arm_tdata (abfd)->local_got_tls_type)
+
+static bfd_boolean
+elf32_arm_mkobject (bfd *abfd)
+{
+ bfd_size_type amt = sizeof (struct elf32_arm_obj_tdata);
+ abfd->tdata.any = bfd_zalloc (abfd, amt);
+ if (abfd->tdata.any == NULL)
+ return FALSE;
+ return TRUE;
+}
+
+/* The ARM linker needs to keep track of the number of relocs that it
+ decides to copy in check_relocs for each symbol. This is so that
+ it can discard PC relative relocs if it doesn't need them when
+ linking with -Bsymbolic. We store the information in a field
+ extending the regular ELF linker hash table. */
+
+/* This structure keeps track of the number of relocs we have copied
+ for a given symbol. */
+struct elf32_arm_relocs_copied
+ {
+ /* Next section. */
+ struct elf32_arm_relocs_copied * next;
+ /* A section in dynobj. */
+ asection * section;
+ /* Number of relocs copied in this section. */
+ bfd_size_type count;
+ /* Number of PC-relative relocs copied in this section. */
+ bfd_size_type pc_count;
+ };
+
+#define elf32_arm_hash_entry(ent) ((struct elf32_arm_link_hash_entry *)(ent))
+
+/* Arm ELF linker hash entry. */
+struct elf32_arm_link_hash_entry
+ {
+ struct elf_link_hash_entry root;
+
+ /* Number of PC relative relocs copied for this symbol. */
+ struct elf32_arm_relocs_copied * relocs_copied;
+
+ /* We reference count Thumb references to a PLT entry separately,
+ so that we can emit the Thumb trampoline only if needed. */
+ bfd_signed_vma plt_thumb_refcount;
+
+ /* Since PLT entries have variable size if the Thumb prologue is
+ used, we need to record the index into .got.plt instead of
+ recomputing it from the PLT offset. */
+ bfd_signed_vma plt_got_offset;
+
+#define GOT_UNKNOWN 0
+#define GOT_NORMAL 1
+#define GOT_TLS_GD 2
+#define GOT_TLS_IE 4
+ unsigned char tls_type;
+ };
+
+/* Traverse an arm ELF linker hash table. */
+#define elf32_arm_link_hash_traverse(table, func, info) \
+ (elf_link_hash_traverse \
+ (&(table)->root, \
+ (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
+ (info)))
+
+/* Get the ARM elf linker hash table from a link_info structure. */
+#define elf32_arm_hash_table(info) \
+ ((struct elf32_arm_link_hash_table *) ((info)->hash))
+
+/* ARM ELF linker hash table. */
+struct elf32_arm_link_hash_table
+ {
+ /* The main hash table. */
+ struct elf_link_hash_table root;
+
+ /* The size in bytes of the section containing the Thumb-to-ARM glue. */
+ bfd_size_type thumb_glue_size;
+
+ /* The size in bytes of the section containing the ARM-to-Thumb glue. */
+ bfd_size_type arm_glue_size;
+
+ /* An arbitrary input BFD chosen to hold the glue sections. */
+ bfd * bfd_of_glue_owner;
+
+ /* Nonzero to output a BE8 image. */
+ int byteswap_code;
+
+ /* Zero if R_ARM_TARGET1 means R_ARM_ABS32.
+ Nonzero if R_ARM_TARGET1 means R_ARM_ABS32. */
+ int target1_is_rel;
+
+ /* The relocation to use for R_ARM_TARGET2 relocations. */
+ int target2_reloc;
+
+ /* Nonzero to fix BX instructions for ARMv4 targets. */
+ int fix_v4bx;
+
+ /* Nonzero if the ARM/Thumb BLX instructions are available for use. */
+ int use_blx;
+
+ /* The number of bytes in the initial entry in the PLT. */
+ bfd_size_type plt_header_size;
+
+ /* The number of bytes in the subsequent PLT etries. */
+ bfd_size_type plt_entry_size;
+
+ /* True if the target system is Symbian OS. */
+ int symbian_p;
+
+ /* True if the target uses REL relocations. */
+ int use_rel;
+
+ /* Short-cuts to get to dynamic linker sections. */
+ asection *sgot;
+ asection *sgotplt;
+ asection *srelgot;
+ asection *splt;
+ asection *srelplt;
+ asection *sdynbss;
+ asection *srelbss;
+
+ /* Data for R_ARM_TLS_LDM32 relocations. */
+ union {
+ bfd_signed_vma refcount;
+ bfd_vma offset;
+ } tls_ldm_got;
+
+ /* Small local sym to section mapping cache. */
+ struct sym_sec_cache sym_sec;
+
+ /* For convenience in allocate_dynrelocs. */
+ bfd * obfd;
+ };
+
+/* Create an entry in an ARM ELF linker hash table. */
+
+static struct bfd_hash_entry *
+elf32_arm_link_hash_newfunc (struct bfd_hash_entry * entry,
+ struct bfd_hash_table * table,
+ const char * string)
+{
+ struct elf32_arm_link_hash_entry * ret =
+ (struct elf32_arm_link_hash_entry *) entry;
+
+ /* Allocate the structure if it has not already been allocated by a
+ subclass. */
+ if (ret == (struct elf32_arm_link_hash_entry *) NULL)
+ ret = bfd_hash_allocate (table, sizeof (struct elf32_arm_link_hash_entry));
+ if (ret == NULL)
+ return (struct bfd_hash_entry *) ret;
+
+ /* Call the allocation method of the superclass. */
+ ret = ((struct elf32_arm_link_hash_entry *)
+ _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
+ table, string));
+ if (ret != NULL)
+ {
+ ret->relocs_copied = NULL;
+ ret->tls_type = GOT_UNKNOWN;
+ ret->plt_thumb_refcount = 0;
+ ret->plt_got_offset = -1;
+ }
+
+ return (struct bfd_hash_entry *) ret;
+}
+
+/* Create .got, .gotplt, and .rel.got sections in DYNOBJ, and set up
+ shortcuts to them in our hash table. */
+
+static bfd_boolean
+create_got_section (bfd *dynobj, struct bfd_link_info *info)
+{
+ struct elf32_arm_link_hash_table *htab;
+
+ htab = elf32_arm_hash_table (info);
+ /* BPABI objects never have a GOT, or associated sections. */
+ if (htab->symbian_p)
+ return TRUE;
+
+ if (! _bfd_elf_create_got_section (dynobj, info))
+ return FALSE;
+
+ htab->sgot = bfd_get_section_by_name (dynobj, ".got");
+ htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
+ if (!htab->sgot || !htab->sgotplt)
+ abort ();
+
+ htab->srelgot = bfd_make_section_with_flags (dynobj, ".rel.got",
+ (SEC_ALLOC | SEC_LOAD
+ | SEC_HAS_CONTENTS
+ | SEC_IN_MEMORY
+ | SEC_LINKER_CREATED
+ | SEC_READONLY));
+ if (htab->srelgot == NULL
+ || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2))
+ return FALSE;
+ return TRUE;
+}
+
+/* Create .plt, .rel.plt, .got, .got.plt, .rel.got, .dynbss, and
+ .rel.bss sections in DYNOBJ, and set up shortcuts to them in our
+ hash table. */
+
+static bfd_boolean
+elf32_arm_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
+{
+ struct elf32_arm_link_hash_table *htab;
+
+ htab = elf32_arm_hash_table (info);
+ if (!htab->sgot && !create_got_section (dynobj, info))
+ return FALSE;
+
+ if (!_bfd_elf_create_dynamic_sections (dynobj, info))
+ return FALSE;
+
+ htab->splt = bfd_get_section_by_name (dynobj, ".plt");
+ htab->srelplt = bfd_get_section_by_name (dynobj, ".rel.plt");
+ htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
+ if (!info->shared)
+ htab->srelbss = bfd_get_section_by_name (dynobj, ".rel.bss");
+
+ if (!htab->splt
+ || !htab->srelplt
+ || !htab->sdynbss
+ || (!info->shared && !htab->srelbss))
+ abort ();
+
+ return TRUE;
+}
+
+/* Copy the extra info we tack onto an elf_link_hash_entry. */
+
+static void
+elf32_arm_copy_indirect_symbol (const struct elf_backend_data *bed,
+ struct elf_link_hash_entry *dir,
+ struct elf_link_hash_entry *ind)
+{
+ struct elf32_arm_link_hash_entry *edir, *eind;
+
+ edir = (struct elf32_arm_link_hash_entry *) dir;
+ eind = (struct elf32_arm_link_hash_entry *) ind;
+
+ if (eind->relocs_copied != NULL)
+ {
+ if (edir->relocs_copied != NULL)
+ {
+ struct elf32_arm_relocs_copied **pp;
+ struct elf32_arm_relocs_copied *p;
+
+ if (ind->root.type == bfd_link_hash_indirect)
+ abort ();
+
+ /* Add reloc counts against the weak sym to the strong sym
+ list. Merge any entries against the same section. */
+ for (pp = &eind->relocs_copied; (p = *pp) != NULL; )
+ {
+ struct elf32_arm_relocs_copied *q;
+
+ for (q = edir->relocs_copied; q != NULL; q = q->next)
+ if (q->section == p->section)
+ {
+ q->pc_count += p->pc_count;
+ q->count += p->count;
+ *pp = p->next;
+ break;
+ }
+ if (q == NULL)
+ pp = &p->next;
+ }
+ *pp = edir->relocs_copied;
+ }
+
+ edir->relocs_copied = eind->relocs_copied;
+ eind->relocs_copied = NULL;
+ }
+
+ /* If the direct symbol already has an associated PLT entry, the
+ indirect symbol should not. If it doesn't, swap refcount information
+ from the indirect symbol. */
+ if (edir->plt_thumb_refcount == 0)
+ {
+ edir->plt_thumb_refcount = eind->plt_thumb_refcount;
+ eind->plt_thumb_refcount = 0;
+ }
+ else
+ BFD_ASSERT (eind->plt_thumb_refcount == 0);
+
+ if (ind->root.type == bfd_link_hash_indirect
+ && dir->got.refcount <= 0)
+ {
+ edir->tls_type = eind->tls_type;
+ eind->tls_type = GOT_UNKNOWN;
+ }
+
+ _bfd_elf_link_hash_copy_indirect (bed, dir, ind);
+}
+
+/* Create an ARM elf linker hash table. */
+
+static struct bfd_link_hash_table *
+elf32_arm_link_hash_table_create (bfd *abfd)
+{
+ struct elf32_arm_link_hash_table *ret;
+ bfd_size_type amt = sizeof (struct elf32_arm_link_hash_table);
+
+ ret = bfd_malloc (amt);
+ if (ret == NULL)
+ return NULL;
+
+ if (!_bfd_elf_link_hash_table_init (& ret->root, abfd,
+ elf32_arm_link_hash_newfunc))
+ {
+ free (ret);
+ return NULL;
+ }
+
+ ret->sgot = NULL;
+ ret->sgotplt = NULL;
+ ret->srelgot = NULL;
+ ret->splt = NULL;
+ ret->srelplt = NULL;
+ ret->sdynbss = NULL;
+ ret->srelbss = NULL;
+ ret->thumb_glue_size = 0;
+ ret->arm_glue_size = 0;
+ ret->bfd_of_glue_owner = NULL;
+ ret->byteswap_code = 0;
+ ret->target1_is_rel = 0;
+ ret->target2_reloc = R_ARM_NONE;
+#ifdef FOUR_WORD_PLT
+ ret->plt_header_size = 16;
+ ret->plt_entry_size = 16;
+#else
+ ret->plt_header_size = 20;
+ ret->plt_entry_size = 12;
+#endif
+ ret->fix_v4bx = 0;
+ ret->use_blx = 0;
+ ret->symbian_p = 0;
+ ret->use_rel = 1;
+ ret->sym_sec.abfd = NULL;
+ ret->obfd = abfd;
+ ret->tls_ldm_got.refcount = 0;
+
+ return &ret->root.root;
+}
+
+/* Locate the Thumb encoded calling stub for NAME. */
+
+static struct elf_link_hash_entry *
+find_thumb_glue (struct bfd_link_info *link_info,
+ const char *name,
+ bfd *input_bfd)
+{
+ char *tmp_name;
+ struct elf_link_hash_entry *hash;
+ struct elf32_arm_link_hash_table *hash_table;
+
+ /* We need a pointer to the armelf specific hash table. */
+ hash_table = elf32_arm_hash_table (link_info);
+
+ tmp_name = bfd_malloc ((bfd_size_type) strlen (name)
+ + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1);
+
+ BFD_ASSERT (tmp_name);
+
+ sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name);
+
+ hash = elf_link_hash_lookup
+ (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE);
+
+ if (hash == NULL)
+ /* xgettext:c-format */
+ (*_bfd_error_handler) (_("%B: unable to find THUMB glue '%s' for `%s'"),
+ input_bfd, tmp_name, name);
+
+ free (tmp_name);
+
+ return hash;
+}
+
+/* Locate the ARM encoded calling stub for NAME. */
+
+static struct elf_link_hash_entry *
+find_arm_glue (struct bfd_link_info *link_info,
+ const char *name,
+ bfd *input_bfd)
+{
+ char *tmp_name;
+ struct elf_link_hash_entry *myh;
+ struct elf32_arm_link_hash_table *hash_table;
+
+ /* We need a pointer to the elfarm specific hash table. */
+ hash_table = elf32_arm_hash_table (link_info);
+
+ tmp_name = bfd_malloc ((bfd_size_type) strlen (name)
+ + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1);
+
+ BFD_ASSERT (tmp_name);
+
+ sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name);
+
+ myh = elf_link_hash_lookup
+ (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE);
+
+ if (myh == NULL)
+ /* xgettext:c-format */
+ (*_bfd_error_handler) (_("%B: unable to find ARM glue '%s' for `%s'"),
+ input_bfd, tmp_name, name);
+
+ free (tmp_name);
+
+ return myh;
+}
+
+/* ARM->Thumb glue (static images):
+
+ .arm
+ __func_from_arm:
+ ldr r12, __func_addr
+ bx r12
+ __func_addr:
+ .word func @ behave as if you saw a ARM_32 reloc.
+
+ (relocatable images)
+ .arm
+ __func_from_arm:
+ ldr r12, __func_offset
+ add r12, r12, pc
+ bx r12
+ __func_offset:
+ .word func - .
+ */
+
+#define ARM2THUMB_STATIC_GLUE_SIZE 12
+static const insn32 a2t1_ldr_insn = 0xe59fc000;
+static const insn32 a2t2_bx_r12_insn = 0xe12fff1c;
+static const insn32 a2t3_func_addr_insn = 0x00000001;
+
+#define ARM2THUMB_PIC_GLUE_SIZE 16
+static const insn32 a2t1p_ldr_insn = 0xe59fc004;
+static const insn32 a2t2p_add_pc_insn = 0xe08cc00f;
+static const insn32 a2t3p_bx_r12_insn = 0xe12fff1c;
+
+/* Thumb->ARM: Thumb->(non-interworking aware) ARM
+
+ .thumb .thumb
+ .align 2 .align 2
+ __func_from_thumb: __func_from_thumb:
+ bx pc push {r6, lr}
+ nop ldr r6, __func_addr
+ .arm mov lr, pc
+ __func_change_to_arm: bx r6
+ b func .arm
+ __func_back_to_thumb:
+ ldmia r13! {r6, lr}
+ bx lr
+ __func_addr:
+ .word func */
+
+#define THUMB2ARM_GLUE_SIZE 8
+static const insn16 t2a1_bx_pc_insn = 0x4778;
+static const insn16 t2a2_noop_insn = 0x46c0;
+static const insn32 t2a3_b_insn = 0xea000000;
+
+#ifndef ELFARM_NABI_C_INCLUDED
+bfd_boolean
+bfd_elf32_arm_allocate_interworking_sections (struct bfd_link_info * info)
+{
+ asection * s;
+ bfd_byte * foo;
+ struct elf32_arm_link_hash_table * globals;
+
+ globals = elf32_arm_hash_table (info);
+
+ BFD_ASSERT (globals != NULL);
+
+ if (globals->arm_glue_size != 0)
+ {
+ BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
+
+ s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
+ ARM2THUMB_GLUE_SECTION_NAME);
+
+ BFD_ASSERT (s != NULL);
+
+ foo = bfd_alloc (globals->bfd_of_glue_owner, globals->arm_glue_size);
+
+ s->size = globals->arm_glue_size;
+ s->contents = foo;
+ }
+
+ if (globals->thumb_glue_size != 0)
+ {
+ BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
+
+ s = bfd_get_section_by_name
+ (globals->bfd_of_glue_owner, THUMB2ARM_GLUE_SECTION_NAME);
+
+ BFD_ASSERT (s != NULL);
+
+ foo = bfd_alloc (globals->bfd_of_glue_owner, globals->thumb_glue_size);
+
+ s->size = globals->thumb_glue_size;
+ s->contents = foo;
+ }
+
+ return TRUE;
+}
+
+static void
+record_arm_to_thumb_glue (struct bfd_link_info * link_info,
+ struct elf_link_hash_entry * h)
+{
+ const char * name = h->root.root.string;
+ asection * s;
+ char * tmp_name;
+ struct elf_link_hash_entry * myh;
+ struct bfd_link_hash_entry * bh;
+ struct elf32_arm_link_hash_table * globals;
+ bfd_vma val;
+
+ globals = elf32_arm_hash_table (link_info);
+
+ BFD_ASSERT (globals != NULL);
+ BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
+
+ s = bfd_get_section_by_name
+ (globals->bfd_of_glue_owner, ARM2THUMB_GLUE_SECTION_NAME);
+
+ BFD_ASSERT (s != NULL);
+
+ tmp_name = bfd_malloc ((bfd_size_type) strlen (name) + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1);
+
+ BFD_ASSERT (tmp_name);
+
+ sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name);
+
+ myh = elf_link_hash_lookup
+ (&(globals)->root, tmp_name, FALSE, FALSE, TRUE);
+
+ if (myh != NULL)
+ {
+ /* We've already seen this guy. */
+ free (tmp_name);
+ return;
+ }
+
+ /* The only trick here is using hash_table->arm_glue_size as the value.
+ Even though the section isn't allocated yet, this is where we will be
+ putting it. */
+ bh = NULL;
+ val = globals->arm_glue_size + 1;
+ _bfd_generic_link_add_one_symbol (link_info, globals->bfd_of_glue_owner,
+ tmp_name, BSF_GLOBAL, s, val,
+ NULL, TRUE, FALSE, &bh);
+
+ myh = (struct elf_link_hash_entry *) bh;
+ myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
+ myh->forced_local = 1;
+
+ free (tmp_name);
+
+ if ((link_info->shared || globals->root.is_relocatable_executable))
+ globals->arm_glue_size += ARM2THUMB_PIC_GLUE_SIZE;
+ else
+ globals->arm_glue_size += ARM2THUMB_STATIC_GLUE_SIZE;
+
+ return;
+}
+
+static void
+record_thumb_to_arm_glue (struct bfd_link_info *link_info,
+ struct elf_link_hash_entry *h)
+{
+ const char *name = h->root.root.string;
+ asection *s;
+ char *tmp_name;
+ struct elf_link_hash_entry *myh;
+ struct bfd_link_hash_entry *bh;
+ struct elf32_arm_link_hash_table *hash_table;
+ bfd_vma val;
+
+ hash_table = elf32_arm_hash_table (link_info);
+
+ BFD_ASSERT (hash_table != NULL);
+ BFD_ASSERT (hash_table->bfd_of_glue_owner != NULL);
+
+ s = bfd_get_section_by_name
+ (hash_table->bfd_of_glue_owner, THUMB2ARM_GLUE_SECTION_NAME);
+
+ BFD_ASSERT (s != NULL);
+
+ tmp_name = bfd_malloc ((bfd_size_type) strlen (name)
+ + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1);
+
+ BFD_ASSERT (tmp_name);
+
+ sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name);
+
+ myh = elf_link_hash_lookup
+ (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE);
+
+ if (myh != NULL)
+ {
+ /* We've already seen this guy. */
+ free (tmp_name);
+ return;
+ }
+
+ bh = NULL;
+ val = hash_table->thumb_glue_size + 1;
+ _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner,
+ tmp_name, BSF_GLOBAL, s, val,
+ NULL, TRUE, FALSE, &bh);
+
+ /* If we mark it 'Thumb', the disassembler will do a better job. */
+ myh = (struct elf_link_hash_entry *) bh;
+ myh->type = ELF_ST_INFO (STB_LOCAL, STT_ARM_TFUNC);
+ myh->forced_local = 1;
+
+ free (tmp_name);
+
+#define CHANGE_TO_ARM "__%s_change_to_arm"
+#define BACK_FROM_ARM "__%s_back_from_arm"
+
+ /* Allocate another symbol to mark where we switch to Arm mode. */
+ tmp_name = bfd_malloc ((bfd_size_type) strlen (name)
+ + strlen (CHANGE_TO_ARM) + 1);
+
+ BFD_ASSERT (tmp_name);
+
+ sprintf (tmp_name, CHANGE_TO_ARM, name);
+
+ bh = NULL;
+ val = hash_table->thumb_glue_size + 4,
+ _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner,
+ tmp_name, BSF_LOCAL, s, val,
+ NULL, TRUE, FALSE, &bh);
+
+ free (tmp_name);
+
+ hash_table->thumb_glue_size += THUMB2ARM_GLUE_SIZE;
+
+ return;
+}
+
+/* Add the glue sections to ABFD. This function is called from the
+ linker scripts in ld/emultempl/{armelf}.em. */
+
+bfd_boolean
+bfd_elf32_arm_add_glue_sections_to_bfd (bfd *abfd,
+ struct bfd_link_info *info)
+{
+ flagword flags;
+ asection *sec;
+
+ /* If we are only performing a partial
+ link do not bother adding the glue. */
+ if (info->relocatable)
+ return TRUE;
+
+ sec = bfd_get_section_by_name (abfd, ARM2THUMB_GLUE_SECTION_NAME);
+
+ if (sec == NULL)
+ {
+ /* Note: we do not include the flag SEC_LINKER_CREATED, as this
+ will prevent elf_link_input_bfd() from processing the contents
+ of this section. */
+ flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_CODE | SEC_READONLY;
+
+ sec = bfd_make_section_with_flags (abfd,
+ ARM2THUMB_GLUE_SECTION_NAME,
+ flags);
+
+ if (sec == NULL
+ || !bfd_set_section_alignment (abfd, sec, 2))
+ return FALSE;
+
+ /* Set the gc mark to prevent the section from being removed by garbage
+ collection, despite the fact that no relocs refer to this section. */
+ sec->gc_mark = 1;
+ }
+
+ sec = bfd_get_section_by_name (abfd, THUMB2ARM_GLUE_SECTION_NAME);
+
+ if (sec == NULL)
+ {
+ flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
+ | SEC_CODE | SEC_READONLY;
+
+ sec = bfd_make_section_with_flags (abfd,
+ THUMB2ARM_GLUE_SECTION_NAME,
+ flags);
+
+ if (sec == NULL
+ || !bfd_set_section_alignment (abfd, sec, 2))
+ return FALSE;
+
+ sec->gc_mark = 1;
+ }
+
+ return TRUE;
+}
+
+/* Select a BFD to be used to hold the sections used by the glue code.
+ This function is called from the linker scripts in ld/emultempl/
+ {armelf/pe}.em */
+
+bfd_boolean
+bfd_elf32_arm_get_bfd_for_interworking (bfd *abfd, struct bfd_link_info *info)
+{
+ struct elf32_arm_link_hash_table *globals;
+
+ /* If we are only performing a partial link
+ do not bother getting a bfd to hold the glue. */
+ if (info->relocatable)
+ return TRUE;
+
+ /* Make sure we don't attach the glue sections to a dynamic object. */
+ BFD_ASSERT (!(abfd->flags & DYNAMIC));
+
+ globals = elf32_arm_hash_table (info);
+
+ BFD_ASSERT (globals != NULL);
+
+ if (globals->bfd_of_glue_owner != NULL)
+ return TRUE;
+
+ /* Save the bfd for later use. */
+ globals->bfd_of_glue_owner = abfd;
+
+ return TRUE;
+}
+
+bfd_boolean
+bfd_elf32_arm_process_before_allocation (bfd *abfd,
+ struct bfd_link_info *link_info,
+ int byteswap_code)
+{
+ Elf_Internal_Shdr *symtab_hdr;
+ Elf_Internal_Rela *internal_relocs = NULL;
+ Elf_Internal_Rela *irel, *irelend;
+ bfd_byte *contents = NULL;
+
+ asection *sec;
+ struct elf32_arm_link_hash_table *globals;
+
+ /* If we are only performing a partial link do not bother
+ to construct any glue. */
+ if (link_info->relocatable)
+ return TRUE;
+
+ /* Here we have a bfd that is to be included on the link. We have a hook
+ to do reloc rummaging, before section sizes are nailed down. */
+ globals = elf32_arm_hash_table (link_info);
+
+ BFD_ASSERT (globals != NULL);
+ BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
+
+ if (byteswap_code && !bfd_big_endian (abfd))
+ {
+ _bfd_error_handler (_("%B: BE8 images only valid in big-endian mode."),
+ abfd);
+ return FALSE;
+ }
+ globals->byteswap_code = byteswap_code;
+
+ /* Rummage around all the relocs and map the glue vectors. */
+ sec = abfd->sections;
+
+ if (sec == NULL)
+ return TRUE;
+
+ for (; sec != NULL; sec = sec->next)
+ {
+ if (sec->reloc_count == 0)
+ continue;
+
+ symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
+
+ /* Load the relocs. */
+ internal_relocs
+ = _bfd_elf_link_read_relocs (abfd, sec, (void *) NULL,
+ (Elf_Internal_Rela *) NULL, FALSE);
+
+ if (internal_relocs == NULL)
+ goto error_return;
+
+ irelend = internal_relocs + sec->reloc_count;
+ for (irel = internal_relocs; irel < irelend; irel++)
+ {
+ long r_type;
+ unsigned long r_index;
+
+ struct elf_link_hash_entry *h;
+
+ r_type = ELF32_R_TYPE (irel->r_info);
+ r_index = ELF32_R_SYM (irel->r_info);
+
+ /* These are the only relocation types we care about. */
+ if ( r_type != R_ARM_PC24
+ && r_type != R_ARM_PLT32
+ && r_type != R_ARM_CALL
+ && r_type != R_ARM_JUMP24
+ && r_type != R_ARM_THM_CALL)
+ continue;
+
+ /* Get the section contents if we haven't done so already. */
+ if (contents == NULL)
+ {
+ /* Get cached copy if it exists. */
+ if (elf_section_data (sec)->this_hdr.contents != NULL)
+ contents = elf_section_data (sec)->this_hdr.contents;
+ else
+ {
+ /* Go get them off disk. */
+ if (! bfd_malloc_and_get_section (abfd, sec, &contents))
+ goto error_return;
+ }
+ }
+
+ /* If the relocation is not against a symbol it cannot concern us. */
+ h = NULL;
+
+ /* We don't care about local symbols. */
+ if (r_index < symtab_hdr->sh_info)
+ continue;
+
+ /* This is an external symbol. */
+ r_index -= symtab_hdr->sh_info;
+ h = (struct elf_link_hash_entry *)
+ elf_sym_hashes (abfd)[r_index];
+
+ /* If the relocation is against a static symbol it must be within
+ the current section and so cannot be a cross ARM/Thumb relocation. */
+ if (h == NULL)
+ continue;
+
+ /* If the call will go through a PLT entry then we do not need
+ glue. */
+ if (globals->splt != NULL && h->plt.offset != (bfd_vma) -1)
+ continue;
+
+ switch (r_type)
+ {
+ case R_ARM_PC24:
+ case R_ARM_PLT32:
+ case R_ARM_CALL:
+ case R_ARM_JUMP24:
+ /* This one is a call from arm code. We need to look up
+ the target of the call. If it is a thumb target, we
+ insert glue. */
+ if (ELF_ST_TYPE(h->type) == STT_ARM_TFUNC)
+ record_arm_to_thumb_glue (link_info, h);
+ break;
+
+ case R_ARM_THM_CALL:
+ /* This one is a call from thumb code. We look
+ up the target of the call. If it is not a thumb
+ target, we insert glue. */
+ if (ELF_ST_TYPE (h->type) != STT_ARM_TFUNC)
+ record_thumb_to_arm_glue (link_info, h);
+ break;
+
+ default:
+ abort ();
+ }
+ }
+
+ if (contents != NULL
+ && elf_section_data (sec)->this_hdr.contents != contents)
+ free (contents);
+ contents = NULL;
+
+ if (internal_relocs != NULL
+ && elf_section_data (sec)->relocs != internal_relocs)
+ free (internal_relocs);
+ internal_relocs = NULL;
+ }
+
+ return TRUE;
+
+error_return:
+ if (contents != NULL
+ && elf_section_data (sec)->this_hdr.contents != contents)
+ free (contents);
+ if (internal_relocs != NULL
+ && elf_section_data (sec)->relocs != internal_relocs)
+ free (internal_relocs);
+
+ return FALSE;
+}
+#endif
+
+
+/* Set target relocation values needed during linking. */
+
+void
+bfd_elf32_arm_set_target_relocs (struct bfd_link_info *link_info,
+ int target1_is_rel,
+ char * target2_type,
+ int fix_v4bx,
+ int use_blx)
+{
+ struct elf32_arm_link_hash_table *globals;
+
+ globals = elf32_arm_hash_table (link_info);
+
+ globals->target1_is_rel = target1_is_rel;
+ if (strcmp (target2_type, "rel") == 0)
+ globals->target2_reloc = R_ARM_REL32;
+ else if (strcmp (target2_type, "abs") == 0)
+ globals->target2_reloc = R_ARM_ABS32;
+ else if (strcmp (target2_type, "got-rel") == 0)
+ globals->target2_reloc = R_ARM_GOT_PREL;
+ else
+ {
+ _bfd_error_handler (_("Invalid TARGET2 relocation type '%s'."),
+ target2_type);
+ }
+ globals->fix_v4bx = fix_v4bx;
+ globals->use_blx |= use_blx;
+}
+
+/* The thumb form of a long branch is a bit finicky, because the offset
+ encoding is split over two fields, each in it's own instruction. They
+ can occur in any order. So given a thumb form of long branch, and an
+ offset, insert the offset into the thumb branch and return finished
+ instruction.
+
+ It takes two thumb instructions to encode the target address. Each has
+ 11 bits to invest. The upper 11 bits are stored in one (identified by
+ H-0.. see below), the lower 11 bits are stored in the other (identified
+ by H-1).
+
+ Combine together and shifted left by 1 (it's a half word address) and
+ there you have it.
+
+ Op: 1111 = F,
+ H-0, upper address-0 = 000
+ Op: 1111 = F,
+ H-1, lower address-0 = 800
+
+ They can be ordered either way, but the arm tools I've seen always put
+ the lower one first. It probably doesn't matter. krk@cygnus.com
+
+ XXX: Actually the order does matter. The second instruction (H-1)
+ moves the computed address into the PC, so it must be the second one
+ in the sequence. The problem, however is that whilst little endian code
+ stores the instructions in HI then LOW order, big endian code does the
+ reverse. nickc@cygnus.com. */
+
+#define LOW_HI_ORDER 0xF800F000
+#define HI_LOW_ORDER 0xF000F800
+
+static insn32
+insert_thumb_branch (insn32 br_insn, int rel_off)
+{
+ unsigned int low_bits;
+ unsigned int high_bits;
+
+ BFD_ASSERT ((rel_off & 1) != 1);
+
+ rel_off >>= 1; /* Half word aligned address. */
+ low_bits = rel_off & 0x000007FF; /* The bottom 11 bits. */
+ high_bits = (rel_off >> 11) & 0x000007FF; /* The top 11 bits. */
+
+ if ((br_insn & LOW_HI_ORDER) == LOW_HI_ORDER)
+ br_insn = LOW_HI_ORDER | (low_bits << 16) | high_bits;
+ else if ((br_insn & HI_LOW_ORDER) == HI_LOW_ORDER)
+ br_insn = HI_LOW_ORDER | (high_bits << 16) | low_bits;
+ else
+ /* FIXME: abort is probably not the right call. krk@cygnus.com */
+ abort (); /* Error - not a valid branch instruction form. */
+
+ return br_insn;
+}
+
+/* Thumb code calling an ARM function. */
+
+static int
+elf32_thumb_to_arm_stub (struct bfd_link_info * info,
+ const char * name,
+ bfd * input_bfd,
+ bfd * output_bfd,
+ asection * input_section,
+ bfd_byte * hit_data,
+ asection * sym_sec,
+ bfd_vma offset,
+ bfd_signed_vma addend,
+ bfd_vma val)
+{
+ asection * s = 0;
+ bfd_vma my_offset;
+ unsigned long int tmp;
+ long int ret_offset;
+ struct elf_link_hash_entry * myh;
+ struct elf32_arm_link_hash_table * globals;
+
+ myh = find_thumb_glue (info, name, input_bfd);
+ if (myh == NULL)
+ return FALSE;
+
+ globals = elf32_arm_hash_table (info);
+
+ BFD_ASSERT (globals != NULL);
+ BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
+
+ my_offset = myh->root.u.def.value;
+
+ s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
+ THUMB2ARM_GLUE_SECTION_NAME);
+
+ BFD_ASSERT (s != NULL);
+ BFD_ASSERT (s->contents != NULL);
+ BFD_ASSERT (s->output_section != NULL);
+
+ if ((my_offset & 0x01) == 0x01)
+ {
+ if (sym_sec != NULL
+ && sym_sec->owner != NULL
+ && !INTERWORK_FLAG (sym_sec->owner))
+ {
+ (*_bfd_error_handler)
+ (_("%B(%s): warning: interworking not enabled.\n"
+ " first occurrence: %B: thumb call to arm"),
+ sym_sec->owner, input_bfd, name);
+
+ return FALSE;
+ }
+
+ --my_offset;
+ myh->root.u.def.value = my_offset;
+
+ bfd_put_16 (output_bfd, (bfd_vma) t2a1_bx_pc_insn,
+ s->contents + my_offset);
+
+ bfd_put_16 (output_bfd, (bfd_vma) t2a2_noop_insn,
+ s->contents + my_offset + 2);
+
+ ret_offset =
+ /* Address of destination of the stub. */
+ ((bfd_signed_vma) val)
+ - ((bfd_signed_vma)
+ /* Offset from the start of the current section
+ to the start of the stubs. */
+ (s->output_offset
+ /* Offset of the start of this stub from the start of the stubs. */
+ + my_offset
+ /* Address of the start of the current section. */
+ + s->output_section->vma)
+ /* The branch instruction is 4 bytes into the stub. */
+ + 4
+ /* ARM branches work from the pc of the instruction + 8. */
+ + 8);
+
+ bfd_put_32 (output_bfd,
+ (bfd_vma) t2a3_b_insn | ((ret_offset >> 2) & 0x00FFFFFF),
+ s->contents + my_offset + 4);
+ }
+
+ BFD_ASSERT (my_offset <= globals->thumb_glue_size);
+
+ /* Now go back and fix up the original BL insn to point to here. */
+ ret_offset =
+ /* Address of where the stub is located. */
+ (s->output_section->vma + s->output_offset + my_offset)
+ /* Address of where the BL is located. */
+ - (input_section->output_section->vma + input_section->output_offset
+ + offset)
+ /* Addend in the relocation. */
+ - addend
+ /* Biassing for PC-relative addressing. */
+ - 8;
+
+ tmp = bfd_get_32 (input_bfd, hit_data
+ - input_section->vma);
+
+ bfd_put_32 (output_bfd,
+ (bfd_vma) insert_thumb_branch (tmp, ret_offset),
+ hit_data - input_section->vma);
+
+ return TRUE;
+}
+
+/* Arm code calling a Thumb function. */
+
+static int
+elf32_arm_to_thumb_stub (struct bfd_link_info * info,
+ const char * name,
+ bfd * input_bfd,
+ bfd * output_bfd,
+ asection * input_section,
+ bfd_byte * hit_data,
+ asection * sym_sec,
+ bfd_vma offset,
+ bfd_signed_vma addend,
+ bfd_vma val)
+{
+ unsigned long int tmp;
+ bfd_vma my_offset;
+ asection * s;
+ long int ret_offset;
+ struct elf_link_hash_entry * myh;
+ struct elf32_arm_link_hash_table * globals;
+
+ myh = find_arm_glue (info, name, input_bfd);
+ if (myh == NULL)
+ return FALSE;
+
+ globals = elf32_arm_hash_table (info);
+
+ BFD_ASSERT (globals != NULL);
+ BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
+
+ my_offset = myh->root.u.def.value;
+ s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
+ ARM2THUMB_GLUE_SECTION_NAME);
+ BFD_ASSERT (s != NULL);
+ BFD_ASSERT (s->contents != NULL);
+ BFD_ASSERT (s->output_section != NULL);
+
+ if ((my_offset & 0x01) == 0x01)
+ {
+ if (sym_sec != NULL
+ && sym_sec->owner != NULL
+ && !INTERWORK_FLAG (sym_sec->owner))
+ {
+ (*_bfd_error_handler)
+ (_("%B(%s): warning: interworking not enabled.\n"
+ " first occurrence: %B: arm call to thumb"),
+ sym_sec->owner, input_bfd, name);
+ }
+
+ --my_offset;
+ myh->root.u.def.value = my_offset;
+
+ if ((info->shared || globals->root.is_relocatable_executable))
+ {
+ /* For relocatable objects we can't use absolute addresses,
+ so construct the address from a relative offset. */
+ /* TODO: If the offset is small it's probably worth
+ constructing the address with adds. */
+ bfd_put_32 (output_bfd, (bfd_vma) a2t1p_ldr_insn,
+ s->contents + my_offset);
+ bfd_put_32 (output_bfd, (bfd_vma) a2t2p_add_pc_insn,
+ s->contents + my_offset + 4);
+ bfd_put_32 (output_bfd, (bfd_vma) a2t3p_bx_r12_insn,
+ s->contents + my_offset + 8);
+ /* Adjust the offset by 4 for the position of the add,
+ and 8 for the pipeline offset. */
+ ret_offset = (val - (s->output_offset
+ + s->output_section->vma
+ + my_offset + 12))
+ | 1;
+ bfd_put_32 (output_bfd, ret_offset,
+ s->contents + my_offset + 12);
+ }
+ else
+ {
+ bfd_put_32 (output_bfd, (bfd_vma) a2t1_ldr_insn,
+ s->contents + my_offset);
+
+ bfd_put_32 (output_bfd, (bfd_vma) a2t2_bx_r12_insn,
+ s->contents + my_offset + 4);
+
+ /* It's a thumb address. Add the low order bit. */
+ bfd_put_32 (output_bfd, val | a2t3_func_addr_insn,
+ s->contents + my_offset + 8);
+ }
+ }
+
+ BFD_ASSERT (my_offset <= globals->arm_glue_size);
+
+ tmp = bfd_get_32 (input_bfd, hit_data);
+ tmp = tmp & 0xFF000000;
+
+ /* Somehow these are both 4 too far, so subtract 8. */
+ ret_offset = (s->output_offset
+ + my_offset
+ + s->output_section->vma
+ - (input_section->output_offset
+ + input_section->output_section->vma
+ + offset + addend)
+ - 8);
+
+ tmp = tmp | ((ret_offset >> 2) & 0x00FFFFFF);
+
+ bfd_put_32 (output_bfd, (bfd_vma) tmp, hit_data - input_section->vma);
+
+ return TRUE;
+}
+
+/* Some relocations map to different relocations depending on the
+ target. Return the real relocation. */
+static int
+arm_real_reloc_type (struct elf32_arm_link_hash_table * globals,
+ int r_type)
+{
+ switch (r_type)
+ {
+ case R_ARM_TARGET1:
+ if (globals->target1_is_rel)
+ return R_ARM_REL32;
+ else
+ return R_ARM_ABS32;
+
+ case R_ARM_TARGET2:
+ return globals->target2_reloc;
+
+ default:
+ return r_type;
+ }
+}
+
+/* Return the base VMA address which should be subtracted from real addresses
+ when resolving @dtpoff relocation.
+ This is PT_TLS segment p_vaddr. */
+
+static bfd_vma
+dtpoff_base (struct bfd_link_info *info)
+{
+ /* If tls_sec is NULL, we should have signalled an error already. */
+ if (elf_hash_table (info)->tls_sec == NULL)
+ return 0;
+ return elf_hash_table (info)->tls_sec->vma;
+}
+
+/* Return the relocation value for @tpoff relocation
+ if STT_TLS virtual address is ADDRESS. */
+
+static bfd_vma
+tpoff (struct bfd_link_info *info, bfd_vma address)
+{
+ struct elf_link_hash_table *htab = elf_hash_table (info);
+ bfd_vma base;
+
+ /* If tls_sec is NULL, we should have signalled an error already. */
+ if (htab->tls_sec == NULL)
+ return 0;
+ base = align_power ((bfd_vma) TCB_SIZE, htab->tls_sec->alignment_power);
+ return address - htab->tls_sec->vma + base;
+}
+
+/* Perform a relocation as part of a final link. */
+
+static bfd_reloc_status_type
+elf32_arm_final_link_relocate (reloc_howto_type * howto,
+ bfd * input_bfd,
+ bfd * output_bfd,
+ asection * input_section,
+ bfd_byte * contents,
+ Elf_Internal_Rela * rel,
+ bfd_vma value,
+ struct bfd_link_info * info,
+ asection * sym_sec,
+ const char * sym_name,
+ int sym_flags,
+ struct elf_link_hash_entry * h,
+ bfd_boolean * unresolved_reloc_p)
+{
+ unsigned long r_type = howto->type;
+ unsigned long r_symndx;
+ bfd_byte * hit_data = contents + rel->r_offset;
+ bfd * dynobj = NULL;
+ Elf_Internal_Shdr * symtab_hdr;
+ struct elf_link_hash_entry ** sym_hashes;
+ bfd_vma * local_got_offsets;
+ asection * sgot = NULL;
+ asection * splt = NULL;
+ asection * sreloc = NULL;
+ bfd_vma addend;
+ bfd_signed_vma signed_addend;
+ struct elf32_arm_link_hash_table * globals;
+
+ globals = elf32_arm_hash_table (info);
+
+ /* Some relocation type map to different relocations depending on the
+ target. We pick the right one here. */
+ r_type = arm_real_reloc_type (globals, r_type);
+ if (r_type != howto->type)
+ howto = elf32_arm_howto_from_type (r_type);
+
+ /* If the start address has been set, then set the EF_ARM_HASENTRY
+ flag. Setting this more than once is redundant, but the cost is
+ not too high, and it keeps the code simple.
+
+ The test is done here, rather than somewhere else, because the
+ start address is only set just before the final link commences.
+
+ Note - if the user deliberately sets a start address of 0, the
+ flag will not be set. */
+ if (bfd_get_start_address (output_bfd) != 0)
+ elf_elfheader (output_bfd)->e_flags |= EF_ARM_HASENTRY;
+
+ dynobj = elf_hash_table (info)->dynobj;
+ if (dynobj)
+ {
+ sgot = bfd_get_section_by_name (dynobj, ".got");
+ splt = bfd_get_section_by_name (dynobj, ".plt");
+ }
+ symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
+ sym_hashes = elf_sym_hashes (input_bfd);
+ local_got_offsets = elf_local_got_offsets (input_bfd);
+ r_symndx = ELF32_R_SYM (rel->r_info);
+
+ if (globals->use_rel)
+ {
+ addend = bfd_get_32 (input_bfd, hit_data) & howto->src_mask;
+
+ if (addend & ((howto->src_mask + 1) >> 1))
+ {
+ signed_addend = -1;
+ signed_addend &= ~ howto->src_mask;
+ signed_addend |= addend;
+ }
+ else
+ signed_addend = addend;
+ }
+ else
+ addend = signed_addend = rel->r_addend;
+
+ switch (r_type)
+ {
+ case R_ARM_NONE:
+ /* We don't need to find a value for this symbol. It's just a
+ marker. */
+ *unresolved_reloc_p = FALSE;
+ return bfd_reloc_ok;
+
+ case R_ARM_PC24:
+ case R_ARM_ABS32:
+ case R_ARM_REL32:
+ case R_ARM_CALL:
+ case R_ARM_JUMP24:
+ case R_ARM_XPC25:
+ case R_ARM_PREL31:
+ case R_ARM_PLT32:
+ /* r_symndx will be zero only for relocs against symbols
+ from removed linkonce sections, or sections discarded by
+ a linker script. */
+ if (r_symndx == 0)
+ return bfd_reloc_ok;
+
+ /* Handle relocations which should use the PLT entry. ABS32/REL32
+ will use the symbol's value, which may point to a PLT entry, but we
+ don't need to handle that here. If we created a PLT entry, all
+ branches in this object should go to it. */
+ if ((r_type != R_ARM_ABS32 && r_type != R_ARM_REL32)
+ && h != NULL
+ && splt != NULL
+ && h->plt.offset != (bfd_vma) -1)
+ {
+ /* If we've created a .plt section, and assigned a PLT entry to
+ this function, it should not be known to bind locally. If
+ it were, we would have cleared the PLT entry. */
+ BFD_ASSERT (!SYMBOL_CALLS_LOCAL (info, h));
+
+ value = (splt->output_section->vma
+ + splt->output_offset
+ + h->plt.offset);
+ *unresolved_reloc_p = FALSE;
+ return _bfd_final_link_relocate (howto, input_bfd, input_section,
+ contents, rel->r_offset, value,
+ (bfd_vma) 0);
+ }
+
+ /* When generating a shared object or relocatable executable, these
+ relocations are copied into the output file to be resolved at
+ run time. */
+ if ((info->shared || globals->root.is_relocatable_executable)
+ && (input_section->flags & SEC_ALLOC)
+ && (r_type != R_ARM_REL32
+ || !SYMBOL_CALLS_LOCAL (info, h))
+ && (h == NULL
+ || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
+ || h->root.type != bfd_link_hash_undefweak)
+ && r_type != R_ARM_PC24
+ && r_type != R_ARM_CALL
+ && r_type != R_ARM_JUMP24
+ && r_type != R_ARM_PREL31
+ && r_type != R_ARM_PLT32)
+ {
+ Elf_Internal_Rela outrel;
+ bfd_byte *loc;
+ bfd_boolean skip, relocate;
+
+ *unresolved_reloc_p = FALSE;
+
+ if (sreloc == NULL)
+ {
+ const char * name;
+
+ name = (bfd_elf_string_from_elf_section
+ (input_bfd,
+ elf_elfheader (input_bfd)->e_shstrndx,
+ elf_section_data (input_section)->rel_hdr.sh_name));
+ if (name == NULL)
+ return bfd_reloc_notsupported;
+
+ BFD_ASSERT (strncmp (name, ".rel", 4) == 0
+ && strcmp (bfd_get_section_name (input_bfd,
+ input_section),
+ name + 4) == 0);
+
+ sreloc = bfd_get_section_by_name (dynobj, name);
+ BFD_ASSERT (sreloc != NULL);
+ }
+
+ skip = FALSE;
+ relocate = FALSE;
+
+ outrel.r_offset =
+ _bfd_elf_section_offset (output_bfd, info, input_section,
+ rel->r_offset);
+ if (outrel.r_offset == (bfd_vma) -1)
+ skip = TRUE;
+ else if (outrel.r_offset == (bfd_vma) -2)
+ skip = TRUE, relocate = TRUE;
+ outrel.r_offset += (input_section->output_section->vma
+ + input_section->output_offset);
+
+ if (skip)
+ memset (&outrel, 0, sizeof outrel);
+ else if (h != NULL
+ && h->dynindx != -1
+ && (!info->shared
+ || !info->symbolic
+ || !h->def_regular))
+ outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
+ else
+ {
+ int symbol;
+
+ /* This symbol is local, or marked to become local. */
+ relocate = TRUE;
+ if (sym_flags == STT_ARM_TFUNC)
+ value |= 1;
+ if (globals->symbian_p)
+ {
+ /* On Symbian OS, the data segment and text segement
+ can be relocated independently. Therefore, we
+ must indicate the segment to which this
+ relocation is relative. The BPABI allows us to
+ use any symbol in the right segment; we just use
+ the section symbol as it is convenient. (We
+ cannot use the symbol given by "h" directly as it
+ will not appear in the dynamic symbol table.) */
+ if (sym_sec)
+ symbol = elf_section_data (sym_sec->output_section)->dynindx;
+ else
+ symbol = elf_section_data (input_section->output_section)->dynindx;
+ BFD_ASSERT (symbol != 0);
+ }
+ else
+ /* On SVR4-ish systems, the dynamic loader cannot
+ relocate the text and data segments independently,
+ so the symbol does not matter. */
+ symbol = 0;
+ outrel.r_info = ELF32_R_INFO (symbol, R_ARM_RELATIVE);
+ }
+
+ loc = sreloc->contents;
+ loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
+ bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
+
+ /* If this reloc is against an external symbol, we do not want to
+ fiddle with the addend. Otherwise, we need to include the symbol
+ value so that it becomes an addend for the dynamic reloc. */
+ if (! relocate)
+ return bfd_reloc_ok;
+
+ return _bfd_final_link_relocate (howto, input_bfd, input_section,
+ contents, rel->r_offset, value,
+ (bfd_vma) 0);
+ }
+ else switch (r_type)
+ {
+ case R_ARM_XPC25: /* Arm BLX instruction. */
+ case R_ARM_CALL:
+ case R_ARM_JUMP24:
+ case R_ARM_PC24: /* Arm B/BL instruction */
+ case R_ARM_PLT32:
+ if (r_type == R_ARM_XPC25)
+ {
+ /* Check for Arm calling Arm function. */
+ /* FIXME: Should we translate the instruction into a BL
+ instruction instead ? */
+ if (sym_flags != STT_ARM_TFUNC)
+ (*_bfd_error_handler)
+ (_("\%B: Warning: Arm BLX instruction targets Arm function '%s'."),
+ input_bfd,
+ h ? h->root.root.string : "(local)");
+ }
+ else
+ {
+ /* Check for Arm calling Thumb function. */
+ if (sym_flags == STT_ARM_TFUNC)
+ {
+ elf32_arm_to_thumb_stub (info, sym_name, input_bfd,
+ output_bfd, input_section,
+ hit_data, sym_sec, rel->r_offset,
+ signed_addend, value);
+ return bfd_reloc_ok;
+ }
+ }
+
+ /* The ARM ELF ABI says that this reloc is computed as: S - P + A
+ where:
+ S is the address of the symbol in the relocation.
+ P is address of the instruction being relocated.
+ A is the addend (extracted from the instruction) in bytes.
+
+ S is held in 'value'.
+ P is the base address of the section containing the
+ instruction plus the offset of the reloc into that
+ section, ie:
+ (input_section->output_section->vma +
+ input_section->output_offset +
+ rel->r_offset).
+ A is the addend, converted into bytes, ie:
+ (signed_addend * 4)
+
+ Note: None of these operations have knowledge of the pipeline
+ size of the processor, thus it is up to the assembler to
+ encode this information into the addend. */
+ value -= (input_section->output_section->vma
+ + input_section->output_offset);
+ value -= rel->r_offset;
+ if (globals->use_rel)
+ value += (signed_addend << howto->size);
+ else
+ /* RELA addends do not have to be adjusted by howto->size. */
+ value += signed_addend;
+
+ signed_addend = value;
+ signed_addend >>= howto->rightshift;
+
+ /* It is not an error for an undefined weak reference to be
+ out of range. Any program that branches to such a symbol
+ is going to crash anyway, so there is no point worrying
+ about getting the destination exactly right. */
+ if (! h || h->root.type != bfd_link_hash_undefweak)
+ {
+ /* Perform a signed range check. */
+ if ( signed_addend > ((bfd_signed_vma) (howto->dst_mask >> 1))
+ || signed_addend < - ((bfd_signed_vma) ((howto->dst_mask + 1) >> 1)))
+ return bfd_reloc_overflow;
+ }
+
+ /* If necessary set the H bit in the BLX instruction. */
+ if (r_type == R_ARM_XPC25 && ((value & 2) == 2))
+ value = (signed_addend & howto->dst_mask)
+ | (bfd_get_32 (input_bfd, hit_data) & (~ howto->dst_mask))
+ | (1 << 24);
+ else
+ value = (signed_addend & howto->dst_mask)
+ | (bfd_get_32 (input_bfd, hit_data) & (~ howto->dst_mask));
+ break;
+
+ case R_ARM_ABS32:
+ value += addend;
+ if (sym_flags == STT_ARM_TFUNC)
+ value |= 1;
+ break;
+
+ case R_ARM_REL32:
+ value -= (input_section->output_section->vma
+ + input_section->output_offset + rel->r_offset);
+ value += addend;
+ break;
+
+ case R_ARM_PREL31:
+ value -= (input_section->output_section->vma
+ + input_section->output_offset + rel->r_offset);
+ value += signed_addend;
+ if (! h || h->root.type != bfd_link_hash_undefweak)
+ {
+ /* Check for overflow */
+ if ((value ^ (value >> 1)) & (1 << 30))
+ return bfd_reloc_overflow;
+ }
+ value &= 0x7fffffff;
+ value |= (bfd_get_32 (input_bfd, hit_data) & 0x80000000);
+ if (sym_flags == STT_ARM_TFUNC)
+ value |= 1;
+ break;
+ }
+
+ bfd_put_32 (input_bfd, value, hit_data);
+ return bfd_reloc_ok;
+
+ case R_ARM_ABS8:
+ value += addend;
+ if ((long) value > 0x7f || (long) value < -0x80)
+ return bfd_reloc_overflow;
+
+ bfd_put_8 (input_bfd, value, hit_data);
+ return bfd_reloc_ok;
+
+ case R_ARM_ABS16:
+ value += addend;
+
+ if ((long) value > 0x7fff || (long) value < -0x8000)
+ return bfd_reloc_overflow;
+
+ bfd_put_16 (input_bfd, value, hit_data);
+ return bfd_reloc_ok;
+
+ case R_ARM_ABS12:
+ /* Support ldr and str instruction for the arm */
+ /* Also thumb b (unconditional branch). ??? Really? */
+ value += addend;
+
+ if ((long) value > 0x7ff || (long) value < -0x800)
+ return bfd_reloc_overflow;
+
+ value |= (bfd_get_32 (input_bfd, hit_data) & 0xfffff000);
+ bfd_put_32 (input_bfd, value, hit_data);
+ return bfd_reloc_ok;
+
+ case R_ARM_THM_ABS5:
+ /* Support ldr and str instructions for the thumb. */
+ if (globals->use_rel)
+ {
+ /* Need to refetch addend. */
+ addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask;
+ /* ??? Need to determine shift amount from operand size. */
+ addend >>= howto->rightshift;
+ }
+ value += addend;
+
+ /* ??? Isn't value unsigned? */
+ if ((long) value > 0x1f || (long) value < -0x10)
+ return bfd_reloc_overflow;
+
+ /* ??? Value needs to be properly shifted into place first. */
+ value |= bfd_get_16 (input_bfd, hit_data) & 0xf83f;
+ bfd_put_16 (input_bfd, value, hit_data);
+ return bfd_reloc_ok;
+
+ case R_ARM_THM_XPC22:
+ case R_ARM_THM_CALL:
+ /* Thumb BL (branch long instruction). */
+ {
+ bfd_vma relocation;
+ bfd_boolean overflow = FALSE;
+ bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data);
+ bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2);
+ bfd_signed_vma reloc_signed_max = ((1 << (howto->bitsize - 1)) - 1) >> howto->rightshift;
+ bfd_signed_vma reloc_signed_min = ~ reloc_signed_max;
+ bfd_vma check;
+ bfd_signed_vma signed_check;
+ bfd_boolean thumb_plt_call = FALSE;
+
+ /* Need to refetch the addend and squish the two 11 bit pieces
+ together. */
+ if (globals->use_rel)
+ {
+ bfd_vma upper = upper_insn & 0x7ff;
+ bfd_vma lower = lower_insn & 0x7ff;
+ upper = (upper ^ 0x400) - 0x400; /* Sign extend. */
+ addend = (upper << 12) | (lower << 1);
+ signed_addend = addend;
+ }
+
+ if (r_type == R_ARM_THM_XPC22)
+ {
+ /* Check for Thumb to Thumb call. */
+ /* FIXME: Should we translate the instruction into a BL
+ instruction instead ? */
+ if (sym_flags == STT_ARM_TFUNC)
+ (*_bfd_error_handler)
+ (_("%B: Warning: Thumb BLX instruction targets thumb function '%s'."),
+ input_bfd,
+ h ? h->root.root.string : "(local)");
+ }
+ else
+ {
+ /* If it is not a call to Thumb, assume call to Arm.
+ If it is a call relative to a section name, then it is not a
+ function call at all, but rather a long jump. Calls through
+ the PLT do not require stubs. */
+ if (sym_flags != STT_ARM_TFUNC && sym_flags != STT_SECTION
+ && (h == NULL || splt == NULL
+ || h->plt.offset == (bfd_vma) -1))
+ {
+ if (elf32_thumb_to_arm_stub
+ (info, sym_name, input_bfd, output_bfd, input_section,
+ hit_data, sym_sec, rel->r_offset, signed_addend, value))
+ return bfd_reloc_ok;
+ else
+ return bfd_reloc_dangerous;
+ }
+ }
+
+ /* Handle calls via the PLT. */
+ if (h != NULL && splt != NULL && h->plt.offset != (bfd_vma) -1)
+ {
+ value = (splt->output_section->vma
+ + splt->output_offset
+ + h->plt.offset);
+ if (globals->use_blx)
+ {
+ /* If the Thumb BLX instruction is available, convert the
+ BL to a BLX instruction to call the ARM-mode PLT entry. */
+ if ((lower_insn & (0x3 << 11)) == 0x3 << 11)
+ {
+ lower_insn = (lower_insn & ~(0x3 << 11)) | 0x1 << 11;
+ thumb_plt_call = TRUE;
+ }
+ }
+ else
+ /* Target the Thumb stub before the ARM PLT entry. */
+ value -= PLT_THUMB_STUB_SIZE;
+ *unresolved_reloc_p = FALSE;
+ }
+
+ relocation = value + signed_addend;
+
+ relocation -= (input_section->output_section->vma
+ + input_section->output_offset
+ + rel->r_offset);
+
+ check = relocation >> howto->rightshift;
+
+ /* If this is a signed value, the rightshift just dropped
+ leading 1 bits (assuming twos complement). */
+ if ((bfd_signed_vma) relocation >= 0)
+ signed_check = check;
+ else
+ signed_check = check | ~((bfd_vma) -1 >> howto->rightshift);
+
+ /* Assumes two's complement. */
+ if (signed_check > reloc_signed_max || signed_check < reloc_signed_min)
+ overflow = TRUE;
+
+ if ((r_type == R_ARM_THM_XPC22
+ && ((lower_insn & 0x1800) == 0x0800))
+ || thumb_plt_call)
+ /* For a BLX instruction, make sure that the relocation is rounded up
+ to a word boundary. This follows the semantics of the instruction
+ which specifies that bit 1 of the target address will come from bit
+ 1 of the base address. */
+ relocation = (relocation + 2) & ~ 3;
+
+ /* Put RELOCATION back into the insn. */
+ upper_insn = (upper_insn & ~(bfd_vma) 0x7ff) | ((relocation >> 12) & 0x7ff);
+ lower_insn = (lower_insn & ~(bfd_vma) 0x7ff) | ((relocation >> 1) & 0x7ff);
+
+ /* Put the relocated value back in the object file: */
+ bfd_put_16 (input_bfd, upper_insn, hit_data);
+ bfd_put_16 (input_bfd, lower_insn, hit_data + 2);
+
+ return (overflow ? bfd_reloc_overflow : bfd_reloc_ok);
+ }
+ break;
+
+ case R_ARM_THM_JUMP24:
+ /* Thumb32 unconditional branch instruction. */
+ {
+ bfd_vma relocation;
+ bfd_boolean overflow = FALSE;
+ bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data);
+ bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2);
+ bfd_signed_vma reloc_signed_max = ((1 << (howto->bitsize - 1)) - 1) >> howto->rightshift;
+ bfd_signed_vma reloc_signed_min = ~ reloc_signed_max;
+ bfd_vma check;
+ bfd_signed_vma signed_check;
+
+ /* Need to refetch the addend, reconstruct the top three bits, and glue the
+ two pieces together. */
+ if (globals->use_rel)
+ {
+ bfd_vma S = (upper_insn & 0x0400) >> 10;
+ bfd_vma hi = (upper_insn & 0x03ff);
+ bfd_vma I1 = (lower_insn & 0x2000) >> 13;
+ bfd_vma I2 = (lower_insn & 0x0800) >> 11;
+ bfd_vma lo = (lower_insn & 0x07ff);
+
+ I1 = !(I1 ^ S);
+ I2 = !(I2 ^ S);
+ S = !S;
+
+ signed_addend = (S << 24) | (I1 << 23) | (I2 << 22) | (hi << 12) | (lo << 1);
+ signed_addend -= (1 << 24); /* Sign extend. */
+ }
+
+ /* ??? Should handle interworking? GCC might someday try to
+ use this for tail calls. */
+
+ relocation = value + signed_addend;
+ relocation -= (input_section->output_section->vma
+ + input_section->output_offset
+ + rel->r_offset);
+
+ check = relocation >> howto->rightshift;
+
+ /* If this is a signed value, the rightshift just dropped
+ leading 1 bits (assuming twos complement). */
+ if ((bfd_signed_vma) relocation >= 0)
+ signed_check = check;
+ else
+ signed_check = check | ~((bfd_vma) -1 >> howto->rightshift);
+
+ /* Assumes two's complement. */
+ if (signed_check > reloc_signed_max || signed_check < reloc_signed_min)
+ overflow = TRUE;
+
+ /* Put RELOCATION back into the insn. */
+ {
+ bfd_vma S = (relocation & 0x01000000) >> 24;
+ bfd_vma I1 = (relocation & 0x00800000) >> 23;
+ bfd_vma I2 = (relocation & 0x00400000) >> 22;
+ bfd_vma hi = (relocation & 0x003ff000) >> 12;
+ bfd_vma lo = (relocation & 0x00000ffe) >> 1;
+
+ I1 = !(I1 ^ S);
+ I2 = !(I2 ^ S);
+
+ upper_insn = (upper_insn & (bfd_vma) 0xf800) | (S << 10) | hi;
+ lower_insn = (lower_insn & (bfd_vma) 0xd000) | (I1 << 13) | (I2 << 11) | lo;
+ }
+
+ /* Put the relocated value back in the object file: */
+ bfd_put_16 (input_bfd, upper_insn, hit_data);
+ bfd_put_16 (input_bfd, lower_insn, hit_data + 2);
+
+ return (overflow ? bfd_reloc_overflow : bfd_reloc_ok);
+ }
+
+ case R_ARM_THM_JUMP19:
+ /* Thumb32 conditional branch instruction. */
+ {
+ bfd_vma relocation;
+ bfd_boolean overflow = FALSE;
+ bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data);
+ bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2);
+ bfd_signed_vma reloc_signed_max = ((1 << (howto->bitsize - 1)) - 1) >> howto->rightshift;
+ bfd_signed_vma reloc_signed_min = ~ reloc_signed_max;
+ bfd_vma check;
+ bfd_signed_vma signed_check;
+
+ /* Need to refetch the addend, reconstruct the top three bits,
+ and squish the two 11 bit pieces together. */
+ if (globals->use_rel)
+ {
+ bfd_vma S = (upper_insn & 0x0400) >> 10;
+ bfd_vma upper = (upper_insn & 0x001f);
+ bfd_vma J1 = (lower_insn & 0x2000) >> 13;
+ bfd_vma J2 = (lower_insn & 0x0800) >> 11;
+ bfd_vma lower = (lower_insn & 0x07ff);
+
+ upper |= J2 << 6;
+ upper |= J1 << 7;
+ upper |= ~S << 8;
+ upper -= 0x0100; /* Sign extend. */
+
+ addend = (upper << 12) | (lower << 1);
+ signed_addend = addend;
+ }
+
+ /* ??? Should handle interworking? GCC might someday try to
+ use this for tail calls. */
+
+ relocation = value + signed_addend;
+ relocation -= (input_section->output_section->vma
+ + input_section->output_offset
+ + rel->r_offset);
+
+ check = relocation >> howto->rightshift;
+
+ /* If this is a signed value, the rightshift just dropped
+ leading 1 bits (assuming twos complement). */
+ if ((bfd_signed_vma) relocation >= 0)
+ signed_check = check;
+ else
+ signed_check = check | ~((bfd_vma) -1 >> howto->rightshift);
+
+ /* Assumes two's complement. */
+ if (signed_check > reloc_signed_max || signed_check < reloc_signed_min)
+ overflow = TRUE;
+
+ /* Put RELOCATION back into the insn. */
+ {
+ bfd_vma S = (relocation & 0x00100000) >> 20;
+ bfd_vma J2 = (relocation & 0x00080000) >> 19;
+ bfd_vma J1 = (relocation & 0x00040000) >> 18;
+ bfd_vma hi = (relocation & 0x0003f000) >> 12;
+ bfd_vma lo = (relocation & 0x00000ffe) >> 1;
+
+ upper_insn = (upper_insn & 0xfb30) | (S << 10) | hi;
+ lower_insn = (lower_insn & 0xd000) | (J1 << 13) | (J2 << 11) | lo;
+ }
+
+ /* Put the relocated value back in the object file: */
+ bfd_put_16 (input_bfd, upper_insn, hit_data);
+ bfd_put_16 (input_bfd, lower_insn, hit_data + 2);
+
+ return (overflow ? bfd_reloc_overflow : bfd_reloc_ok);
+ }
+
+ case R_ARM_THM_JUMP11:
+ case R_ARM_THM_JUMP8:
+ case R_ARM_THM_JUMP6:
+ /* Thumb B (branch) instruction). */
+ {
+ bfd_signed_vma relocation;
+ bfd_signed_vma reloc_signed_max = (1 << (howto->bitsize - 1)) - 1;
+ bfd_signed_vma reloc_signed_min = ~ reloc_signed_max;
+ bfd_signed_vma signed_check;
+
+ /* CZB cannot jump backward. */
+ if (r_type == R_ARM_THM_JUMP6)
+ reloc_signed_min = 0;
+
+ if (globals->use_rel)
+ {
+ /* Need to refetch addend. */
+ addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask;
+ if (addend & ((howto->src_mask + 1) >> 1))
+ {
+ signed_addend = -1;
+ signed_addend &= ~ howto->src_mask;
+ signed_addend |= addend;
+ }
+ else
+ signed_addend = addend;
+ /* The value in the insn has been right shifted. We need to
+ undo this, so that we can perform the address calculation
+ in terms of bytes. */
+ signed_addend <<= howto->rightshift;
+ }
+ relocation = value + signed_addend;
+
+ relocation -= (input_section->output_section->vma
+ + input_section->output_offset
+ + rel->r_offset);
+
+ relocation >>= howto->rightshift;
+ signed_check = relocation;
+
+ if (r_type == R_ARM_THM_JUMP6)
+ relocation = ((relocation & 0x0020) << 4) | ((relocation & 0x001f) << 3);
+ else
+ relocation &= howto->dst_mask;
+ relocation |= (bfd_get_16 (input_bfd, hit_data) & (~ howto->dst_mask));
+
+ bfd_put_16 (input_bfd, relocation, hit_data);
+
+ /* Assumes two's complement. */
+ if (signed_check > reloc_signed_max || signed_check < reloc_signed_min)
+ return bfd_reloc_overflow;
+
+ return bfd_reloc_ok;
+ }
+
+ case R_ARM_ALU_PCREL7_0:
+ case R_ARM_ALU_PCREL15_8:
+ case R_ARM_ALU_PCREL23_15:
+ {
+ bfd_vma insn;
+ bfd_vma relocation;
+
+ insn = bfd_get_32 (input_bfd, hit_data);
+ if (globals->use_rel)
+ {
+ /* Extract the addend. */
+ addend = (insn & 0xff) << ((insn & 0xf00) >> 7);
+ signed_addend = addend;
+ }
+ relocation = value + signed_addend;
+
+ relocation -= (input_section->output_section->vma
+ + input_section->output_offset
+ + rel->r_offset);
+ insn = (insn & ~0xfff)
+ | ((howto->bitpos << 7) & 0xf00)
+ | ((relocation >> howto->bitpos) & 0xff);
+ bfd_put_32 (input_bfd, value, hit_data);
+ }
+ return bfd_reloc_ok;
+
+ case R_ARM_GNU_VTINHERIT:
+ case R_ARM_GNU_VTENTRY:
+ return bfd_reloc_ok;
+
+ case R_ARM_GOTOFF32:
+ /* Relocation is relative to the start of the
+ global offset table. */
+
+ BFD_ASSERT (sgot != NULL);
+ if (sgot == NULL)
+ return bfd_reloc_notsupported;
+
+ /* If we are addressing a Thumb function, we need to adjust the
+ address by one, so that attempts to call the function pointer will
+ correctly interpret it as Thumb code. */
+ if (sym_flags == STT_ARM_TFUNC)
+ value += 1;
+
+ /* Note that sgot->output_offset is not involved in this
+ calculation. We always want the start of .got. If we
+ define _GLOBAL_OFFSET_TABLE in a different way, as is
+ permitted by the ABI, we might have to change this
+ calculation. */
+ value -= sgot->output_section->vma;
+ return _bfd_final_link_relocate (howto, input_bfd, input_section,
+ contents, rel->r_offset, value,
+ (bfd_vma) 0);
+
+ case R_ARM_GOTPC:
+ /* Use global offset table as symbol value. */
+ BFD_ASSERT (sgot != NULL);
+
+ if (sgot == NULL)
+ return bfd_reloc_notsupported;
+
+ *unresolved_reloc_p = FALSE;
+ value = sgot->output_section->vma;
+ return _bfd_final_link_relocate (howto, input_bfd, input_section,
+ contents, rel->r_offset, value,
+ (bfd_vma) 0);
+
+ case R_ARM_GOT32:
+ case R_ARM_GOT_PREL:
+ /* Relocation is to the entry for this symbol in the
+ global offset table. */
+ if (sgot == NULL)
+ return bfd_reloc_notsupported;
+
+ if (h != NULL)
+ {
+ bfd_vma off;
+ bfd_boolean dyn;
+
+ off = h->got.offset;
+ BFD_ASSERT (off != (bfd_vma) -1);
+ dyn = globals->root.dynamic_sections_created;
+
+ if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
+ || (info->shared
+ && SYMBOL_REFERENCES_LOCAL (info, h))
+ || (ELF_ST_VISIBILITY (h->other)
+ && h->root.type == bfd_link_hash_undefweak))
+ {
+ /* This is actually a static link, or it is a -Bsymbolic link
+ and the symbol is defined locally. We must initialize this
+ entry in the global offset table. Since the offset must
+ always be a multiple of 4, we use the least significant bit
+ to record whether we have initialized it already.
+
+ When doing a dynamic link, we create a .rel.got relocation
+ entry to initialize the value. This is done in the
+ finish_dynamic_symbol routine. */
+ if ((off & 1) != 0)
+ off &= ~1;
+ else
+ {
+ /* If we are addressing a Thumb function, we need to
+ adjust the address by one, so that attempts to
+ call the function pointer will correctly
+ interpret it as Thumb code. */
+ if (sym_flags == STT_ARM_TFUNC)
+ value |= 1;
+
+ bfd_put_32 (output_bfd, value, sgot->contents + off);
+ h->got.offset |= 1;
+ }
+ }
+ else
+ *unresolved_reloc_p = FALSE;
+
+ value = sgot->output_offset + off;
+ }
+ else
+ {
+ bfd_vma off;
+
+ BFD_ASSERT (local_got_offsets != NULL &&
+ local_got_offsets[r_symndx] != (bfd_vma) -1);
+
+ off = local_got_offsets[r_symndx];
+
+ /* The offset must always be a multiple of 4. We use the
+ least significant bit to record whether we have already
+ generated the necessary reloc. */
+ if ((off & 1) != 0)
+ off &= ~1;
+ else
+ {
+ /* If we are addressing a Thumb function, we need to
+ adjust the address by one, so that attempts to
+ call the function pointer will correctly
+ interpret it as Thumb code. */
+ if (sym_flags == STT_ARM_TFUNC)
+ value |= 1;
+
+ bfd_put_32 (output_bfd, value, sgot->contents + off);
+
+ if (info->shared)
+ {
+ asection * srelgot;
+ Elf_Internal_Rela outrel;
+ bfd_byte *loc;
+
+ srelgot = bfd_get_section_by_name (dynobj, ".rel.got");
+ BFD_ASSERT (srelgot != NULL);
+
+ outrel.r_offset = (sgot->output_section->vma
+ + sgot->output_offset
+ + off);
+ outrel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE);
+ loc = srelgot->contents;
+ loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rel);
+ bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
+ }
+
+ local_got_offsets[r_symndx] |= 1;
+ }
+
+ value = sgot->output_offset + off;
+ }
+ if (r_type != R_ARM_GOT32)
+ value += sgot->output_section->vma;
+
+ return _bfd_final_link_relocate (howto, input_bfd, input_section,
+ contents, rel->r_offset, value,
+ (bfd_vma) 0);
+
+ case R_ARM_TLS_LDO32:
+ value = value - dtpoff_base (info);
+
+ return _bfd_final_link_relocate (howto, input_bfd, input_section,
+ contents, rel->r_offset, value, (bfd_vma) 0);
+
+ case R_ARM_TLS_LDM32:
+ {
+ bfd_vma off;
+
+ if (globals->sgot == NULL)
+ abort ();
+
+ off = globals->tls_ldm_got.offset;
+
+ if ((off & 1) != 0)
+ off &= ~1;
+ else
+ {
+ /* If we don't know the module number, create a relocation
+ for it. */
+ if (info->shared)
+ {
+ Elf_Internal_Rela outrel;
+ bfd_byte *loc;
+
+ if (globals->srelgot == NULL)
+ abort ();
+
+ outrel.r_offset = (globals->sgot->output_section->vma
+ + globals->sgot->output_offset + off);
+ outrel.r_info = ELF32_R_INFO (0, R_ARM_TLS_DTPMOD32);
+
+ bfd_put_32 (output_bfd, 0, globals->sgot->contents + off);
+
+ loc = globals->srelgot->contents;
+ loc += globals->srelgot->reloc_count++ * sizeof (Elf32_External_Rel);
+ bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
+ }
+ else
+ bfd_put_32 (output_bfd, 1, globals->sgot->contents + off);
+
+ globals->tls_ldm_got.offset |= 1;
+ }
+
+ value = globals->sgot->output_section->vma + globals->sgot->output_offset + off
+ - (input_section->output_section->vma + input_section->output_offset + rel->r_offset);
+
+ return _bfd_final_link_relocate (howto, input_bfd, input_section,
+ contents, rel->r_offset, value,
+ (bfd_vma) 0);
+ }
+
+ case R_ARM_TLS_GD32:
+ case R_ARM_TLS_IE32:
+ {
+ bfd_vma off;
+ int indx;
+ char tls_type;
+
+ if (globals->sgot == NULL)
+ abort ();
+
+ indx = 0;
+ if (h != NULL)
+ {
+ bfd_boolean dyn;
+ dyn = globals->root.dynamic_sections_created;
+ if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
+ && (!info->shared
+ || !SYMBOL_REFERENCES_LOCAL (info, h)))
+ {
+ *unresolved_reloc_p = FALSE;
+ indx = h->dynindx;
+ }
+ off = h->got.offset;
+ tls_type = ((struct elf32_arm_link_hash_entry *) h)->tls_type;
+ }
+ else
+ {
+ if (local_got_offsets == NULL)
+ abort ();
+ off = local_got_offsets[r_symndx];
+ tls_type = elf32_arm_local_got_tls_type (input_bfd)[r_symndx];
+ }
+
+ if (tls_type == GOT_UNKNOWN)
+ abort ();
+
+ if ((off & 1) != 0)
+ off &= ~1;
+ else
+ {
+ bfd_boolean need_relocs = FALSE;
+ Elf_Internal_Rela outrel;
+ bfd_byte *loc = NULL;
+ int cur_off = off;
+
+ /* The GOT entries have not been initialized yet. Do it
+ now, and emit any relocations. If both an IE GOT and a
+ GD GOT are necessary, we emit the GD first. */
+
+ if ((info->shared || indx != 0)
+ && (h == NULL
+ || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
+ || h->root.type != bfd_link_hash_undefweak))
+ {
+ need_relocs = TRUE;
+ if (globals->srelgot == NULL)
+ abort ();
+ loc = globals->srelgot->contents;
+ loc += globals->srelgot->reloc_count * sizeof (Elf32_External_Rel);
+ }
+
+ if (tls_type & GOT_TLS_GD)
+ {
+ if (need_relocs)
+ {
+ outrel.r_offset = (globals->sgot->output_section->vma
+ + globals->sgot->output_offset + cur_off);
+ outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_DTPMOD32);
+ bfd_put_32 (output_bfd, 0, globals->sgot->contents + cur_off);
+
+ bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
+ globals->srelgot->reloc_count++;
+ loc += sizeof (Elf32_External_Rel);
+
+ if (indx == 0)
+ bfd_put_32 (output_bfd, value - dtpoff_base (info),
+ globals->sgot->contents + cur_off + 4);
+ else
+ {
+ bfd_put_32 (output_bfd, 0,
+ globals->sgot->contents + cur_off + 4);
+
+ outrel.r_info = ELF32_R_INFO (indx,
+ R_ARM_TLS_DTPOFF32);
+ outrel.r_offset += 4;
+ bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
+ globals->srelgot->reloc_count++;
+ loc += sizeof (Elf32_External_Rel);
+ }
+ }
+ else
+ {
+ /* If we are not emitting relocations for a
+ general dynamic reference, then we must be in a
+ static link or an executable link with the
+ symbol binding locally. Mark it as belonging
+ to module 1, the executable. */
+ bfd_put_32 (output_bfd, 1,
+ globals->sgot->contents + cur_off);
+ bfd_put_32 (output_bfd, value - dtpoff_base (info),
+ globals->sgot->contents + cur_off + 4);
+ }
+
+ cur_off += 8;
+ }
+
+ if (tls_type & GOT_TLS_IE)
+ {
+ if (need_relocs)
+ {
+ outrel.r_offset = (globals->sgot->output_section->vma
+ + globals->sgot->output_offset
+ + cur_off);
+ outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_TPOFF32);
+
+ if (indx == 0)
+ bfd_put_32 (output_bfd, value - dtpoff_base (info),
+ globals->sgot->contents + cur_off);
+ else
+ bfd_put_32 (output_bfd, 0,
+ globals->sgot->contents + cur_off);
+
+ bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
+ globals->srelgot->reloc_count++;
+ loc += sizeof (Elf32_External_Rel);
+ }
+ else
+ bfd_put_32 (output_bfd, tpoff (info, value),
+ globals->sgot->contents + cur_off);
+ cur_off += 4;
+ }
+
+ if (h != NULL)
+ h->got.offset |= 1;
+ else
+ local_got_offsets[r_symndx] |= 1;
+ }
+
+ if ((tls_type & GOT_TLS_GD) && r_type != R_ARM_TLS_GD32)
+ off += 8;
+ value = globals->sgot->output_section->vma + globals->sgot->output_offset + off
+ - (input_section->output_section->vma + input_section->output_offset + rel->r_offset);
+
+ return _bfd_final_link_relocate (howto, input_bfd, input_section,
+ contents, rel->r_offset, value,
+ (bfd_vma) 0);
+ }
+
+ case R_ARM_TLS_LE32:
+ if (info->shared)
+ {
+ (*_bfd_error_handler)
+ (_("%B(%A+0x%lx): R_ARM_TLS_LE32 relocation not permitted in shared object"),
+ input_bfd, input_section,
+ (long) rel->r_offset, howto->name);
+ return FALSE;
+ }
+ else
+ value = tpoff (info, value);
+
+ return _bfd_final_link_relocate (howto, input_bfd, input_section,
+ contents, rel->r_offset, value, (bfd_vma) 0);
+
+ case R_ARM_V4BX:
+ if (globals->fix_v4bx)
+ {
+ bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
+
+ /* Ensure that we have a BX instruction. */
+ BFD_ASSERT ((insn & 0x0ffffff0) == 0x012fff10);
+
+ /* Preserve Rm (lowest four bits) and the condition code
+ (highest four bits). Other bits encode MOV PC,Rm. */
+ insn = (insn & 0xf000000f) | 0x01a0f000;
+
+ bfd_put_32 (input_bfd, insn, hit_data);
+ }
+ return bfd_reloc_ok;
+
+ default:
+ return bfd_reloc_notsupported;
+ }
+}
+
+/* Add INCREMENT to the reloc (of type HOWTO) at ADDRESS. */
+static void
+arm_add_to_rel (bfd * abfd,
+ bfd_byte * address,
+ reloc_howto_type * howto,
+ bfd_signed_vma increment)
+{
+ bfd_signed_vma addend;
+
+ if (howto->type == R_ARM_THM_CALL)
+ {
+ int upper_insn, lower_insn;
+ int upper, lower;
+
+ upper_insn = bfd_get_16 (abfd, address);
+ lower_insn = bfd_get_16 (abfd, address + 2);
+ upper = upper_insn & 0x7ff;
+ lower = lower_insn & 0x7ff;
+
+ addend = (upper << 12) | (lower << 1);
+ addend += increment;
+ addend >>= 1;
+
+ upper_insn = (upper_insn & 0xf800) | ((addend >> 11) & 0x7ff);
+ lower_insn = (lower_insn & 0xf800) | (addend & 0x7ff);
+
+ bfd_put_16 (abfd, (bfd_vma) upper_insn, address);
+ bfd_put_16 (abfd, (bfd_vma) lower_insn, address + 2);
+ }
+ else
+ {
+ bfd_vma contents;
+
+ contents = bfd_get_32 (abfd, address);
+
+ /* Get the (signed) value from the instruction. */
+ addend = contents & howto->src_mask;
+ if (addend & ((howto->src_mask + 1) >> 1))
+ {
+ bfd_signed_vma mask;
+
+ mask = -1;
+ mask &= ~ howto->src_mask;
+ addend |= mask;
+ }
+
+ /* Add in the increment, (which is a byte value). */
+ switch (howto->type)
+ {
+ default:
+ addend += increment;
+ break;
+
+ case R_ARM_PC24:
+ case R_ARM_PLT32:
+ case R_ARM_CALL:
+ case R_ARM_JUMP24:
+ addend <<= howto->size;
+ addend += increment;
+
+ /* Should we check for overflow here ? */
+
+ /* Drop any undesired bits. */
+ addend >>= howto->rightshift;
+ break;
+ }
+
+ contents = (contents & ~ howto->dst_mask) | (addend & howto->dst_mask);
+
+ bfd_put_32 (abfd, contents, address);
+ }
+}
+
+#define IS_ARM_TLS_RELOC(R_TYPE) \
+ ((R_TYPE) == R_ARM_TLS_GD32 \
+ || (R_TYPE) == R_ARM_TLS_LDO32 \
+ || (R_TYPE) == R_ARM_TLS_LDM32 \
+ || (R_TYPE) == R_ARM_TLS_DTPOFF32 \
+ || (R_TYPE) == R_ARM_TLS_DTPMOD32 \
+ || (R_TYPE) == R_ARM_TLS_TPOFF32 \
+ || (R_TYPE) == R_ARM_TLS_LE32 \
+ || (R_TYPE) == R_ARM_TLS_IE32)
+
+/* Relocate an ARM ELF section. */
+static bfd_boolean
+elf32_arm_relocate_section (bfd * output_bfd,
+ struct bfd_link_info * info,
+ bfd * input_bfd,
+ asection * input_section,
+ bfd_byte * contents,
+ Elf_Internal_Rela * relocs,
+ Elf_Internal_Sym * local_syms,
+ asection ** local_sections)
+{
+ Elf_Internal_Shdr *symtab_hdr;
+ struct elf_link_hash_entry **sym_hashes;
+ Elf_Internal_Rela *rel;
+ Elf_Internal_Rela *relend;
+ const char *name;
+ struct elf32_arm_link_hash_table * globals;
+
+ globals = elf32_arm_hash_table (info);
+ if (info->relocatable && !globals->use_rel)
+ return TRUE;
+
+ symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
+ sym_hashes = elf_sym_hashes (input_bfd);
+
+ rel = relocs;
+ relend = relocs + input_section->reloc_count;
+ for (; rel < relend; rel++)
+ {
+ int r_type;
+ reloc_howto_type * howto;
+ unsigned long r_symndx;
+ Elf_Internal_Sym * sym;
+ asection * sec;
+ struct elf_link_hash_entry * h;
+ bfd_vma relocation;
+ bfd_reloc_status_type r;
+ arelent bfd_reloc;
+ char sym_type;
+ bfd_boolean unresolved_reloc = FALSE;
+
+ r_symndx = ELF32_R_SYM (rel->r_info);
+ r_type = ELF32_R_TYPE (rel->r_info);
+ r_type = arm_real_reloc_type (globals, r_type);
+
+ if ( r_type == R_ARM_GNU_VTENTRY
+ || r_type == R_ARM_GNU_VTINHERIT)
+ continue;
+
+ bfd_reloc.howto = elf32_arm_howto_from_type (r_type);
+ howto = bfd_reloc.howto;
+
+ if (info->relocatable && globals->use_rel)
+ {
+ /* This is a relocatable link. We don't have to change
+ anything, unless the reloc is against a section symbol,
+ in which case we have to adjust according to where the
+ section symbol winds up in the output section. */
+ if (r_symndx < symtab_hdr->sh_info)
+ {
+ sym = local_syms + r_symndx;
+ if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
+ {
+ sec = local_sections[r_symndx];
+ arm_add_to_rel (input_bfd, contents + rel->r_offset,
+ howto,
+ (bfd_signed_vma) (sec->output_offset
+ + sym->st_value));
+ }
+ }
+
+ continue;
+ }
+
+ /* This is a final link. */
+ h = NULL;
+ sym = NULL;
+ sec = NULL;
+
+ if (r_symndx < symtab_hdr->sh_info)
+ {
+ sym = local_syms + r_symndx;
+ sym_type = ELF32_ST_TYPE (sym->st_info);
+ sec = local_sections[r_symndx];
+ if (globals->use_rel)
+ {
+ relocation = (sec->output_section->vma
+ + sec->output_offset
+ + sym->st_value);
+ if ((sec->flags & SEC_MERGE)
+ && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
+ {
+ asection *msec;
+ bfd_vma addend, value;
+
+ if (howto->rightshift)
+ {
+ (*_bfd_error_handler)
+ (_("%B(%A+0x%lx): %s relocation against SEC_MERGE section"),
+ input_bfd, input_section,
+ (long) rel->r_offset, howto->name);
+ return FALSE;
+ }
+
+ value = bfd_get_32 (input_bfd, contents + rel->r_offset);
+
+ /* Get the (signed) value from the instruction. */
+ addend = value & howto->src_mask;
+ if (addend & ((howto->src_mask + 1) >> 1))
+ {
+ bfd_signed_vma mask;
+
+ mask = -1;
+ mask &= ~ howto->src_mask;
+ addend |= mask;
+ }
+ msec = sec;
+ addend =
+ _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend)
+ - relocation;
+ addend += msec->output_section->vma + msec->output_offset;
+ value = (value & ~ howto->dst_mask) | (addend & howto->dst_mask);
+ bfd_put_32 (input_bfd, value, contents + rel->r_offset);
+ }
+ }
+ else
+ relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
+ }
+ else
+ {
+ bfd_boolean warned;
-typedef unsigned long int insn32;
-typedef unsigned short int insn16;
+ RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
+ r_symndx, symtab_hdr, sym_hashes,
+ h, sec, relocation,
+ unresolved_reloc, warned);
-static reloc_howto_type *elf32_arm_reloc_type_lookup
- PARAMS ((bfd * abfd, bfd_reloc_code_real_type code));
-static void elf32_arm_info_to_howto
- PARAMS ((bfd *, arelent *, Elf32_Internal_Rela *));
-static boolean elf32_arm_set_private_flags
- PARAMS ((bfd *, flagword));
-static boolean elf32_arm_copy_private_bfd_data
- PARAMS ((bfd *, bfd *));
-static boolean elf32_arm_merge_private_bfd_data
- PARAMS ((bfd *, bfd *));
-static boolean elf32_arm_print_private_bfd_data
- PARAMS ((bfd *, PTR));
-static struct bfd_link_hash_table *elf32_arm_link_hash_table_create
- PARAMS ((bfd *));
-
-
-static insn32 insert_thumb_branch
- PARAMS ((insn32, int));
-static struct elf_link_hash_entry *find_thumb_glue
- PARAMS ((struct bfd_link_info *, CONST char *, bfd *));
-static struct elf_link_hash_entry *find_arm_glue
- PARAMS ((struct bfd_link_info *, CONST char *, bfd *));
-static void record_arm_to_thumb_glue
- PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
-static void record_thumb_to_arm_glue
- PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
+ sym_type = h->type;
+ }
-/* The linker script knows the section names for placement.
- The entry_names are used to do simple name mangling on the stubs.
- Given a function name, and its type, the stub can be found. The
- name can be changed. The only requirement is the %s be present.
- */
+ if (h != NULL)
+ name = h->root.root.string;
+ else
+ {
+ name = (bfd_elf_string_from_elf_section
+ (input_bfd, symtab_hdr->sh_link, sym->st_name));
+ if (name == NULL || *name == '\0')
+ name = bfd_section_name (input_bfd, sec);
+ }
-#define INTERWORK_FLAG( abfd ) (elf_elfheader (abfd)->e_flags & EF_INTERWORK)
+ if (r_symndx != 0
+ && r_type != R_ARM_NONE
+ && (h == NULL
+ || h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak)
+ && IS_ARM_TLS_RELOC (r_type) != (sym_type == STT_TLS))
+ {
+ (*_bfd_error_handler)
+ ((sym_type == STT_TLS
+ ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
+ : _("%B(%A+0x%lx): %s used with non-TLS symbol %s")),
+ input_bfd,
+ input_section,
+ (long) rel->r_offset,
+ howto->name,
+ name);
+ }
-#define THUMB2ARM_GLUE_SECTION_NAME ".glue_7t"
-#define THUMB2ARM_GLUE_ENTRY_NAME "__%s_from_thumb"
+ r = elf32_arm_final_link_relocate (howto, input_bfd, output_bfd,
+ input_section, contents, rel,
+ relocation, info, sec, name,
+ (h ? ELF_ST_TYPE (h->type) :
+ ELF_ST_TYPE (sym->st_info)), h,
+ &unresolved_reloc);
+
+ /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
+ because such sections are not SEC_ALLOC and thus ld.so will
+ not process them. */
+ if (unresolved_reloc
+ && !((input_section->flags & SEC_DEBUGGING) != 0
+ && h->def_dynamic))
+ {
+ (*_bfd_error_handler)
+ (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
+ input_bfd,
+ input_section,
+ (long) rel->r_offset,
+ howto->name,
+ h->root.root.string);
+ return FALSE;
+ }
-#define ARM2THUMB_GLUE_SECTION_NAME ".glue_7"
-#define ARM2THUMB_GLUE_ENTRY_NAME "__%s_from_arm"
+ if (r != bfd_reloc_ok)
+ {
+ const char * msg = (const char *) 0;
-/* Get the ARM elf linker hash table from a link_info structure. */
-#define elf32_arm_hash_table(info) \
- ((struct elf32_arm_link_hash_table *) ((info)->hash))
+ switch (r)
+ {
+ case bfd_reloc_overflow:
+ /* If the overflowing reloc was to an undefined symbol,
+ we have already printed one error message and there
+ is no point complaining again. */
+ if ((! h ||
+ h->root.type != bfd_link_hash_undefined)
+ && (!((*info->callbacks->reloc_overflow)
+ (info, (h ? &h->root : NULL), name, howto->name,
+ (bfd_vma) 0, input_bfd, input_section,
+ rel->r_offset))))
+ return FALSE;
+ break;
-/* ARM ELF linker hash table */
-struct elf32_arm_link_hash_table
- {
- /* The main hash table. */
- struct elf_link_hash_table root;
+ case bfd_reloc_undefined:
+ if (!((*info->callbacks->undefined_symbol)
+ (info, name, input_bfd, input_section,
+ rel->r_offset, TRUE)))
+ return FALSE;
+ break;
- /* The size in bytes of the section containg the Thumb-to-ARM glue. */
- long int thumb_glue_size;
+ case bfd_reloc_outofrange:
+ msg = _("internal error: out of range error");
+ goto common_error;
- /* The size in bytes of the section containg the ARM-to-Thumb glue. */
- long int arm_glue_size;
+ case bfd_reloc_notsupported:
+ msg = _("internal error: unsupported relocation error");
+ goto common_error;
- /* An arbitary input BFD chosen to hold the glue sections. */
- bfd *bfd_of_glue_owner;
+ case bfd_reloc_dangerous:
+ msg = _("internal error: dangerous error");
+ goto common_error;
- };
+ default:
+ msg = _("internal error: unknown error");
+ /* fall through */
+ common_error:
+ if (!((*info->callbacks->warning)
+ (info, msg, name, input_bfd, input_section,
+ rel->r_offset)))
+ return FALSE;
+ break;
+ }
+ }
+ }
+ return TRUE;
+}
-/* Create an ARM elf linker hash table */
+/* Set the right machine number. */
-static struct bfd_link_hash_table *
-elf32_arm_link_hash_table_create (abfd)
- bfd *abfd;
+static bfd_boolean
+elf32_arm_object_p (bfd *abfd)
{
- struct elf32_arm_link_hash_table *ret;
+ unsigned int mach;
- ret = ((struct elf32_arm_link_hash_table *)
- bfd_alloc (abfd, sizeof (struct elf32_arm_link_hash_table)));
- if (ret == (struct elf32_arm_link_hash_table *) NULL)
- return NULL;
+ mach = bfd_arm_get_mach_from_notes (abfd, ARM_NOTE_SECTION);
- if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
- _bfd_elf_link_hash_newfunc))
- {
- bfd_release (abfd, ret);
- return NULL;
- }
+ if (mach != bfd_mach_arm_unknown)
+ bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach);
- ret->thumb_glue_size = 0;
- ret->arm_glue_size = 0;
- ret->bfd_of_glue_owner = NULL;
+ else if (elf_elfheader (abfd)->e_flags & EF_ARM_MAVERICK_FLOAT)
+ bfd_default_set_arch_mach (abfd, bfd_arch_arm, bfd_mach_arm_ep9312);
- return &ret->root.root;
+ else
+ bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach);
+
+ return TRUE;
}
-static struct elf_link_hash_entry *
-find_thumb_glue (link_info, name, input_bfd)
- struct bfd_link_info *link_info;
- CONST char *name;
- bfd *input_bfd;
+/* Function to keep ARM specific flags in the ELF header. */
+
+static bfd_boolean
+elf32_arm_set_private_flags (bfd *abfd, flagword flags)
{
- char *tmp_name;
- struct elf_link_hash_entry *hash;
- struct elf32_arm_link_hash_table *hash_table;
+ if (elf_flags_init (abfd)
+ && elf_elfheader (abfd)->e_flags != flags)
+ {
+ if (EF_ARM_EABI_VERSION (flags) == EF_ARM_EABI_UNKNOWN)
+ {
+ if (flags & EF_ARM_INTERWORK)
+ (*_bfd_error_handler)
+ (_("Warning: Not setting interworking flag of %B since it has already been specified as non-interworking"),
+ abfd);
+ else
+ _bfd_error_handler
+ (_("Warning: Clearing the interworking flag of %B due to outside request"),
+ abfd);
+ }
+ }
+ else
+ {
+ elf_elfheader (abfd)->e_flags = flags;
+ elf_flags_init (abfd) = TRUE;
+ }
- /* We need a pointer to the armelf specific hash table. */
- hash_table = elf32_arm_hash_table (link_info);
+ return TRUE;
+}
+/* Copy backend specific data from one object module to another. */
- tmp_name = ((char *)
- bfd_malloc (strlen (name) + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1));
+static bfd_boolean
+elf32_arm_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
+{
+ flagword in_flags;
+ flagword out_flags;
- BFD_ASSERT (tmp_name);
+ if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
+ || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
+ return TRUE;
- sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name);
+ in_flags = elf_elfheader (ibfd)->e_flags;
+ out_flags = elf_elfheader (obfd)->e_flags;
- hash = elf_link_hash_lookup
- (&(hash_table)->root, tmp_name, false, false, true);
+ if (elf_flags_init (obfd)
+ && EF_ARM_EABI_VERSION (out_flags) == EF_ARM_EABI_UNKNOWN
+ && in_flags != out_flags)
+ {
+ /* Cannot mix APCS26 and APCS32 code. */
+ if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26))
+ return FALSE;
- if (hash == NULL)
- /* xgettext:c-format */
- _bfd_error_handler (_ ("%s: unable to find THUMB glue '%s' for `%s'"),
- bfd_get_filename (input_bfd), tmp_name, name);
+ /* Cannot mix float APCS and non-float APCS code. */
+ if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT))
+ return FALSE;
- free (tmp_name);
+ /* If the src and dest have different interworking flags
+ then turn off the interworking bit. */
+ if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK))
+ {
+ if (out_flags & EF_ARM_INTERWORK)
+ _bfd_error_handler
+ (_("Warning: Clearing the interworking flag of %B because non-interworking code in %B has been linked with it"),
+ obfd, ibfd);
- return hash;
-}
+ in_flags &= ~EF_ARM_INTERWORK;
+ }
-static struct elf_link_hash_entry *
-find_arm_glue (link_info, name, input_bfd)
- struct bfd_link_info *link_info;
- CONST char *name;
- bfd *input_bfd;
-{
- char *tmp_name;
- struct elf_link_hash_entry *myh;
- struct elf32_arm_link_hash_table *hash_table;
+ /* Likewise for PIC, though don't warn for this case. */
+ if ((in_flags & EF_ARM_PIC) != (out_flags & EF_ARM_PIC))
+ in_flags &= ~EF_ARM_PIC;
+ }
- /* We need a pointer to the elfarm specific hash table. */
- hash_table = elf32_arm_hash_table (link_info);
+ elf_elfheader (obfd)->e_flags = in_flags;
+ elf_flags_init (obfd) = TRUE;
- tmp_name = ((char *)
- bfd_malloc (strlen (name) + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1));
+ /* Also copy the EI_OSABI field. */
+ elf_elfheader (obfd)->e_ident[EI_OSABI] =
+ elf_elfheader (ibfd)->e_ident[EI_OSABI];
- BFD_ASSERT (tmp_name);
+ return TRUE;
+}
- sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name);
+/* Merge backend specific data from an object file to the output
+ object file when linking. */
- myh = elf_link_hash_lookup
- (&(hash_table)->root, tmp_name, false, false, true);
+static bfd_boolean
+elf32_arm_merge_private_bfd_data (bfd * ibfd, bfd * obfd)
+{
+ flagword out_flags;
+ flagword in_flags;
+ bfd_boolean flags_compatible = TRUE;
+ asection *sec;
- if (myh == NULL)
- /* xgettext:c-format */
- _bfd_error_handler (_ ("%s: unable to find ARM glue '%s' for `%s'"),
- bfd_get_filename (input_bfd), tmp_name, name);
+ /* Check if we have the same endianess. */
+ if (! _bfd_generic_verify_endian_match (ibfd, obfd))
+ return FALSE;
- free (tmp_name);
+ if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
+ || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
+ return TRUE;
- return myh;
-}
+ /* The input BFD must have had its flags initialised. */
+ /* The following seems bogus to me -- The flags are initialized in
+ the assembler but I don't think an elf_flags_init field is
+ written into the object. */
+ /* BFD_ASSERT (elf_flags_init (ibfd)); */
-/*
- ARM->Thumb glue:
+ in_flags = elf_elfheader (ibfd)->e_flags;
+ out_flags = elf_elfheader (obfd)->e_flags;
- .arm
- __func_from_arm:
- ldr r12, __func_addr
- bx r12
- __func_addr:
- .word func @ behave as if you saw a ARM_32 reloc
- */
+ if (!elf_flags_init (obfd))
+ {
+ /* If the input is the default architecture and had the default
+ flags then do not bother setting the flags for the output
+ architecture, instead allow future merges to do this. If no
+ future merges ever set these flags then they will retain their
+ uninitialised values, which surprise surprise, correspond
+ to the default values. */
+ if (bfd_get_arch_info (ibfd)->the_default
+ && elf_elfheader (ibfd)->e_flags == 0)
+ return TRUE;
-#define ARM2THUMB_GLUE_SIZE 12
-static const insn32 a2t1_ldr_insn = 0xe59fc000;
-static const insn32 a2t2_bx_r12_insn = 0xe12fff1c;
-static const insn32 a2t3_func_addr_insn = 0x00000001;
+ elf_flags_init (obfd) = TRUE;
+ elf_elfheader (obfd)->e_flags = in_flags;
-/*
- Thumb->ARM: Thumb->(non-interworking aware) ARM
+ if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
+ && bfd_get_arch_info (obfd)->the_default)
+ return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd));
- .thumb .thumb
- .align 2 .align 2
- __func_from_thumb: __func_from_thumb:
- bx pc push {r6, lr}
- nop ldr r6, __func_addr
- .arm mov lr, pc
- __func_change_to_arm: bx r6
- b func .arm
- __func_back_to_thumb:
- ldmia r13! {r6, lr}
- bx lr
- __func_addr:
- .word func
- */
+ return TRUE;
+ }
-#define THUMB2ARM_GLUE_SIZE 8
-static const insn16 t2a1_bx_pc_insn = 0x4778;
-static const insn16 t2a2_noop_insn = 0x46c0;
-static const insn32 t2a3_b_insn = 0xea000000;
+ /* Determine what should happen if the input ARM architecture
+ does not match the output ARM architecture. */
+ if (! bfd_arm_merge_machines (ibfd, obfd))
+ return FALSE;
-static const insn16 t2a1_push_insn = 0xb540;
-static const insn16 t2a2_ldr_insn = 0x4e03;
-static const insn16 t2a3_mov_insn = 0x46fe;
-static const insn16 t2a4_bx_insn = 0x4730;
-static const insn32 t2a5_pop_insn = 0xe8bd4040;
-static const insn32 t2a6_bx_insn = 0xe12fff1e;
+ /* Identical flags must be compatible. */
+ if (in_flags == out_flags)
+ return TRUE;
+
+ /* Check to see if the input BFD actually contains any sections. If
+ not, its flags may not have been initialised either, but it
+ cannot actually cause any incompatiblity. Do not short-circuit
+ dynamic objects; their section list may be emptied by
+ elf_link_add_object_symbols.
+
+ Also check to see if there are no code sections in the input.
+ In this case there is no need to check for code specific flags.
+ XXX - do we need to worry about floating-point format compatability
+ in data sections ? */
+ if (!(ibfd->flags & DYNAMIC))
+ {
+ bfd_boolean null_input_bfd = TRUE;
+ bfd_boolean only_data_sections = TRUE;
-boolean
-bfd_elf32_arm_allocate_interworking_sections (info)
- struct bfd_link_info *info;
-{
- asection *s;
- bfd_byte *foo;
- struct elf32_arm_link_hash_table *globals;
+ for (sec = ibfd->sections; sec != NULL; sec = sec->next)
+ {
+ /* Ignore synthetic glue sections. */
+ if (strcmp (sec->name, ".glue_7")
+ && strcmp (sec->name, ".glue_7t"))
+ {
+ if ((bfd_get_section_flags (ibfd, sec)
+ & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS))
+ == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS))
+ only_data_sections = FALSE;
- globals = elf32_arm_hash_table (info);
+ null_input_bfd = FALSE;
+ break;
+ }
+ }
- BFD_ASSERT (globals != NULL);
+ if (null_input_bfd || only_data_sections)
+ return TRUE;
+ }
- if (globals->arm_glue_size != 0)
+ /* Complain about various flag mismatches. */
+ if (EF_ARM_EABI_VERSION (in_flags) != EF_ARM_EABI_VERSION (out_flags))
{
- BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
+ _bfd_error_handler
+ (_("ERROR: Source object %B has EABI version %d, but target %B has EABI version %d"),
+ ibfd, obfd,
+ (in_flags & EF_ARM_EABIMASK) >> 24,
+ (out_flags & EF_ARM_EABIMASK) >> 24);
+ return FALSE;
+ }
- s = bfd_get_section_by_name
- (globals->bfd_of_glue_owner, ARM2THUMB_GLUE_SECTION_NAME);
+ /* Not sure what needs to be checked for EABI versions >= 1. */
+ if (EF_ARM_EABI_VERSION (in_flags) == EF_ARM_EABI_UNKNOWN)
+ {
+ if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26))
+ {
+ _bfd_error_handler
+ (_("ERROR: %B is compiled for APCS-%d, whereas target %B uses APCS-%d"),
+ ibfd, obfd,
+ in_flags & EF_ARM_APCS_26 ? 26 : 32,
+ out_flags & EF_ARM_APCS_26 ? 26 : 32);
+ flags_compatible = FALSE;
+ }
- BFD_ASSERT (s != NULL);
+ if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT))
+ {
+ if (in_flags & EF_ARM_APCS_FLOAT)
+ _bfd_error_handler
+ (_("ERROR: %B passes floats in float registers, whereas %B passes them in integer registers"),
+ ibfd, obfd);
+ else
+ _bfd_error_handler
+ (_("ERROR: %B passes floats in integer registers, whereas %B passes them in float registers"),
+ ibfd, obfd);
+
+ flags_compatible = FALSE;
+ }
- foo = (bfd_byte *) bfd_alloc
- (globals->bfd_of_glue_owner, globals->arm_glue_size);
+ if ((in_flags & EF_ARM_VFP_FLOAT) != (out_flags & EF_ARM_VFP_FLOAT))
+ {
+ if (in_flags & EF_ARM_VFP_FLOAT)
+ _bfd_error_handler
+ (_("ERROR: %B uses VFP instructions, whereas %B does not"),
+ ibfd, obfd);
+ else
+ _bfd_error_handler
+ (_("ERROR: %B uses FPA instructions, whereas %B does not"),
+ ibfd, obfd);
- s->_raw_size = s->_cooked_size = globals->arm_glue_size;
- s->contents = foo;
- }
+ flags_compatible = FALSE;
+ }
- if (globals->thumb_glue_size != 0)
- {
- BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
+ if ((in_flags & EF_ARM_MAVERICK_FLOAT) != (out_flags & EF_ARM_MAVERICK_FLOAT))
+ {
+ if (in_flags & EF_ARM_MAVERICK_FLOAT)
+ _bfd_error_handler
+ (_("ERROR: %B uses Maverick instructions, whereas %B does not"),
+ ibfd, obfd);
+ else
+ _bfd_error_handler
+ (_("ERROR: %B does not use Maverick instructions, whereas %B does"),
+ ibfd, obfd);
- s = bfd_get_section_by_name
- (globals->bfd_of_glue_owner, THUMB2ARM_GLUE_SECTION_NAME);
+ flags_compatible = FALSE;
+ }
- BFD_ASSERT (s != NULL);
+#ifdef EF_ARM_SOFT_FLOAT
+ if ((in_flags & EF_ARM_SOFT_FLOAT) != (out_flags & EF_ARM_SOFT_FLOAT))
+ {
+ /* We can allow interworking between code that is VFP format
+ layout, and uses either soft float or integer regs for
+ passing floating point arguments and results. We already
+ know that the APCS_FLOAT flags match; similarly for VFP
+ flags. */
+ if ((in_flags & EF_ARM_APCS_FLOAT) != 0
+ || (in_flags & EF_ARM_VFP_FLOAT) == 0)
+ {
+ if (in_flags & EF_ARM_SOFT_FLOAT)
+ _bfd_error_handler
+ (_("ERROR: %B uses software FP, whereas %B uses hardware FP"),
+ ibfd, obfd);
+ else
+ _bfd_error_handler
+ (_("ERROR: %B uses hardware FP, whereas %B uses software FP"),
+ ibfd, obfd);
- foo = (bfd_byte *) bfd_alloc
- (globals->bfd_of_glue_owner, globals->thumb_glue_size);
+ flags_compatible = FALSE;
+ }
+ }
+#endif
- s->_raw_size = s->_cooked_size = globals->thumb_glue_size;
- s->contents = foo;
+ /* Interworking mismatch is only a warning. */
+ if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK))
+ {
+ if (in_flags & EF_ARM_INTERWORK)
+ {
+ _bfd_error_handler
+ (_("Warning: %B supports interworking, whereas %B does not"),
+ ibfd, obfd);
+ }
+ else
+ {
+ _bfd_error_handler
+ (_("Warning: %B does not support interworking, whereas %B does"),
+ ibfd, obfd);
+ }
+ }
}
- return true;
+ return flags_compatible;
}
-static void
-record_arm_to_thumb_glue (link_info, h)
- struct bfd_link_info *link_info;
- struct elf_link_hash_entry *h;
+/* Display the flags field. */
+
+static bfd_boolean
+elf32_arm_print_private_bfd_data (bfd *abfd, void * ptr)
{
- const char *name = h->root.root.string;
- register asection *s;
- char *tmp_name;
- struct elf_link_hash_entry *myh;
- struct elf32_arm_link_hash_table *globals;
+ FILE * file = (FILE *) ptr;
+ unsigned long flags;
+
+ BFD_ASSERT (abfd != NULL && ptr != NULL);
+
+ /* Print normal ELF private data. */
+ _bfd_elf_print_private_bfd_data (abfd, ptr);
+
+ flags = elf_elfheader (abfd)->e_flags;
+ /* Ignore init flag - it may not be set, despite the flags field
+ containing valid data. */
+
+ /* xgettext:c-format */
+ fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
+
+ switch (EF_ARM_EABI_VERSION (flags))
+ {
+ case EF_ARM_EABI_UNKNOWN:
+ /* The following flag bits are GNU extensions and not part of the
+ official ARM ELF extended ABI. Hence they are only decoded if
+ the EABI version is not set. */
+ if (flags & EF_ARM_INTERWORK)
+ fprintf (file, _(" [interworking enabled]"));
+
+ if (flags & EF_ARM_APCS_26)
+ fprintf (file, " [APCS-26]");
+ else
+ fprintf (file, " [APCS-32]");
+
+ if (flags & EF_ARM_VFP_FLOAT)
+ fprintf (file, _(" [VFP float format]"));
+ else if (flags & EF_ARM_MAVERICK_FLOAT)
+ fprintf (file, _(" [Maverick float format]"));
+ else
+ fprintf (file, _(" [FPA float format]"));
+
+ if (flags & EF_ARM_APCS_FLOAT)
+ fprintf (file, _(" [floats passed in float registers]"));
- globals = elf32_arm_hash_table (link_info);
+ if (flags & EF_ARM_PIC)
+ fprintf (file, _(" [position independent]"));
- BFD_ASSERT (globals != NULL);
- BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
+ if (flags & EF_ARM_NEW_ABI)
+ fprintf (file, _(" [new ABI]"));
- s = bfd_get_section_by_name
- (globals->bfd_of_glue_owner, ARM2THUMB_GLUE_SECTION_NAME);
+ if (flags & EF_ARM_OLD_ABI)
+ fprintf (file, _(" [old ABI]"));
+ if (flags & EF_ARM_SOFT_FLOAT)
+ fprintf (file, _(" [software FP]"));
- BFD_ASSERT (s != NULL);
+ flags &= ~(EF_ARM_INTERWORK | EF_ARM_APCS_26 | EF_ARM_APCS_FLOAT
+ | EF_ARM_PIC | EF_ARM_NEW_ABI | EF_ARM_OLD_ABI
+ | EF_ARM_SOFT_FLOAT | EF_ARM_VFP_FLOAT
+ | EF_ARM_MAVERICK_FLOAT);
+ break;
- tmp_name = ((char *)
- bfd_malloc (strlen (name) + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1));
+ case EF_ARM_EABI_VER1:
+ fprintf (file, _(" [Version1 EABI]"));
- BFD_ASSERT (tmp_name);
+ if (flags & EF_ARM_SYMSARESORTED)
+ fprintf (file, _(" [sorted symbol table]"));
+ else
+ fprintf (file, _(" [unsorted symbol table]"));
- sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name);
+ flags &= ~ EF_ARM_SYMSARESORTED;
+ break;
- myh = elf_link_hash_lookup
- (&(globals)->root, tmp_name, false, false, true);
+ case EF_ARM_EABI_VER2:
+ fprintf (file, _(" [Version2 EABI]"));
- if (myh != NULL)
- {
- free (tmp_name);
- return; /* we've already seen this guy */
- }
+ if (flags & EF_ARM_SYMSARESORTED)
+ fprintf (file, _(" [sorted symbol table]"));
+ else
+ fprintf (file, _(" [unsorted symbol table]"));
- /* The only trick here is using hash_table->arm_glue_size as the value. Even
- though the section isn't allocated yet, this is where we will be putting
- it. */
+ if (flags & EF_ARM_DYNSYMSUSESEGIDX)
+ fprintf (file, _(" [dynamic symbols use segment index]"));
- _bfd_generic_link_add_one_symbol (link_info, globals->bfd_of_glue_owner, tmp_name,
- BSF_GLOBAL,
- s, globals->arm_glue_size + 1,
- NULL, true, false,
- (struct bfd_link_hash_entry **) &myh);
+ if (flags & EF_ARM_MAPSYMSFIRST)
+ fprintf (file, _(" [mapping symbols precede others]"));
- free (tmp_name);
+ flags &= ~(EF_ARM_SYMSARESORTED | EF_ARM_DYNSYMSUSESEGIDX
+ | EF_ARM_MAPSYMSFIRST);
+ break;
- globals->arm_glue_size += ARM2THUMB_GLUE_SIZE;
+ case EF_ARM_EABI_VER3:
+ fprintf (file, _(" [Version3 EABI]"));
+ break;
- return;
-}
+ case EF_ARM_EABI_VER4:
+ fprintf (file, _(" [Version4 EABI]"));
-static void
-record_thumb_to_arm_glue (link_info, h)
- struct bfd_link_info *link_info;
- struct elf_link_hash_entry *h;
-{
- const char *name = h->root.root.string;
- register asection *s;
- char *tmp_name;
- struct elf_link_hash_entry *myh;
- struct elf32_arm_link_hash_table *hash_table;
+ if (flags & EF_ARM_BE8)
+ fprintf (file, _(" [BE8]"));
- hash_table = elf32_arm_hash_table (link_info);
+ if (flags & EF_ARM_LE8)
+ fprintf (file, _(" [LE8]"));
- BFD_ASSERT (hash_table != NULL);
- BFD_ASSERT (hash_table->bfd_of_glue_owner != NULL);
+ flags &= ~(EF_ARM_LE8 | EF_ARM_BE8);
+ break;
- s = bfd_get_section_by_name
- (hash_table->bfd_of_glue_owner, THUMB2ARM_GLUE_SECTION_NAME);
+ default:
+ fprintf (file, _(" <EABI version unrecognised>"));
+ break;
+ }
- BFD_ASSERT (s != NULL);
+ flags &= ~ EF_ARM_EABIMASK;
- tmp_name = (char *) bfd_malloc (strlen (name) + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1);
+ if (flags & EF_ARM_RELEXEC)
+ fprintf (file, _(" [relocatable executable]"));
- BFD_ASSERT (tmp_name);
+ if (flags & EF_ARM_HASENTRY)
+ fprintf (file, _(" [has entry point]"));
- sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name);
+ flags &= ~ (EF_ARM_RELEXEC | EF_ARM_HASENTRY);
- myh = elf_link_hash_lookup
- (&(hash_table)->root, tmp_name, false, false, true);
+ if (flags)
+ fprintf (file, _("<Unrecognised flag bits set>"));
- if (myh != NULL)
+ fputc ('\n', file);
+
+ return TRUE;
+}
+
+static int
+elf32_arm_get_symbol_type (Elf_Internal_Sym * elf_sym, int type)
+{
+ switch (ELF_ST_TYPE (elf_sym->st_info))
{
- free (tmp_name);
- return; /* we've already seen this guy */
+ case STT_ARM_TFUNC:
+ return ELF_ST_TYPE (elf_sym->st_info);
+
+ case STT_ARM_16BIT:
+ /* If the symbol is not an object, return the STT_ARM_16BIT flag.
+ This allows us to distinguish between data used by Thumb instructions
+ and non-data (which is probably code) inside Thumb regions of an
+ executable. */
+ if (type != STT_OBJECT)
+ return ELF_ST_TYPE (elf_sym->st_info);
+ break;
+
+ default:
+ break;
}
- _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner, tmp_name,
- BSF_GLOBAL, s, hash_table->thumb_glue_size + 1,
- NULL, true, false,
- (struct bfd_link_hash_entry **) &myh);
+ return type;
+}
- /* If we mark it 'thumb', the disassembler will do a better job. */
- myh->other = C_THUMBEXTFUNC;
+static asection *
+elf32_arm_gc_mark_hook (asection * sec,
+ struct bfd_link_info * info ATTRIBUTE_UNUSED,
+ Elf_Internal_Rela * rel,
+ struct elf_link_hash_entry * h,
+ Elf_Internal_Sym * sym)
+{
+ if (h != NULL)
+ {
+ switch (ELF32_R_TYPE (rel->r_info))
+ {
+ case R_ARM_GNU_VTINHERIT:
+ case R_ARM_GNU_VTENTRY:
+ break;
+
+ default:
+ switch (h->root.type)
+ {
+ case bfd_link_hash_defined:
+ case bfd_link_hash_defweak:
+ return h->root.u.def.section;
+
+ case bfd_link_hash_common:
+ return h->root.u.c.p->section;
+
+ default:
+ break;
+ }
+ }
+ }
+ else
+ return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
- free (tmp_name);
+ return NULL;
+}
- /* Allocate another symbol to mark where we switch to arm mode. */
+/* Update the got entry reference counts for the section being removed. */
-#define CHANGE_TO_ARM "__%s_change_to_arm"
-#define BACK_FROM_ARM "__%s_back_from_arm"
+static bfd_boolean
+elf32_arm_gc_sweep_hook (bfd * abfd,
+ struct bfd_link_info * info,
+ asection * sec,
+ const Elf_Internal_Rela * relocs)
+{
+ Elf_Internal_Shdr *symtab_hdr;
+ struct elf_link_hash_entry **sym_hashes;
+ bfd_signed_vma *local_got_refcounts;
+ const Elf_Internal_Rela *rel, *relend;
+ struct elf32_arm_link_hash_table * globals;
- tmp_name = (char *) bfd_malloc (strlen (name) + strlen (CHANGE_TO_ARM) + 1);
+ globals = elf32_arm_hash_table (info);
- BFD_ASSERT (tmp_name);
+ elf_section_data (sec)->local_dynrel = NULL;
- sprintf (tmp_name, CHANGE_TO_ARM, name);
+ symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
+ sym_hashes = elf_sym_hashes (abfd);
+ local_got_refcounts = elf_local_got_refcounts (abfd);
- myh = NULL;
+ relend = relocs + sec->reloc_count;
+ for (rel = relocs; rel < relend; rel++)
+ {
+ unsigned long r_symndx;
+ struct elf_link_hash_entry *h = NULL;
+ int r_type;
- _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner, tmp_name,
- BSF_LOCAL, s, hash_table->thumb_glue_size + 4,
- NULL, true, false,
- (struct bfd_link_hash_entry **) &myh);
+ r_symndx = ELF32_R_SYM (rel->r_info);
+ if (r_symndx >= symtab_hdr->sh_info)
+ {
+ h = sym_hashes[r_symndx - symtab_hdr->sh_info];
+ while (h->root.type == bfd_link_hash_indirect
+ || h->root.type == bfd_link_hash_warning)
+ h = (struct elf_link_hash_entry *) h->root.u.i.link;
+ }
- free (tmp_name);
+ r_type = ELF32_R_TYPE (rel->r_info);
+ r_type = arm_real_reloc_type (globals, r_type);
+ switch (r_type)
+ {
+ case R_ARM_GOT32:
+ case R_ARM_GOT_PREL:
+ case R_ARM_TLS_GD32:
+ case R_ARM_TLS_IE32:
+ if (h != NULL)
+ {
+ if (h->got.refcount > 0)
+ h->got.refcount -= 1;
+ }
+ else if (local_got_refcounts != NULL)
+ {
+ if (local_got_refcounts[r_symndx] > 0)
+ local_got_refcounts[r_symndx] -= 1;
+ }
+ break;
+
+ case R_ARM_TLS_LDM32:
+ elf32_arm_hash_table (info)->tls_ldm_got.refcount -= 1;
+ break;
+
+ case R_ARM_ABS32:
+ case R_ARM_REL32:
+ case R_ARM_PC24:
+ case R_ARM_PLT32:
+ case R_ARM_CALL:
+ case R_ARM_JUMP24:
+ case R_ARM_PREL31:
+ case R_ARM_THM_CALL:
+ /* Should the interworking branches be here also? */
+
+ if (h != NULL)
+ {
+ struct elf32_arm_link_hash_entry *eh;
+ struct elf32_arm_relocs_copied **pp;
+ struct elf32_arm_relocs_copied *p;
- hash_table->thumb_glue_size += THUMB2ARM_GLUE_SIZE;
+ eh = (struct elf32_arm_link_hash_entry *) h;
- return;
+ if (h->plt.refcount > 0)
+ {
+ h->plt.refcount -= 1;
+ if (ELF32_R_TYPE (rel->r_info) == R_ARM_THM_CALL)
+ eh->plt_thumb_refcount--;
+ }
+
+ if (r_type == R_ARM_ABS32
+ || r_type == R_ARM_REL32)
+ {
+ for (pp = &eh->relocs_copied; (p = *pp) != NULL;
+ pp = &p->next)
+ if (p->section == sec)
+ {
+ p->count -= 1;
+ if (ELF32_R_TYPE (rel->r_info) == R_ARM_REL32)
+ p->pc_count -= 1;
+ if (p->count == 0)
+ *pp = p->next;
+ break;
+ }
+ }
+ }
+ break;
+
+ default:
+ break;
+ }
+ }
+
+ return TRUE;
}
-/* Select a BFD to be used to hold the sections used by the glue code.
- This function is called from the linker scripts in ld/emultempl/
- {armelf/pe}.em */
-boolean
-bfd_elf32_arm_get_bfd_for_interworking (abfd, info)
- bfd *abfd;
- struct bfd_link_info *info;
+/* Look through the relocs for a section during the first phase. */
+
+static bfd_boolean
+elf32_arm_check_relocs (bfd *abfd, struct bfd_link_info *info,
+ asection *sec, const Elf_Internal_Rela *relocs)
{
- struct elf32_arm_link_hash_table *globals;
- flagword flags;
- asection *sec;
+ Elf_Internal_Shdr *symtab_hdr;
+ struct elf_link_hash_entry **sym_hashes;
+ struct elf_link_hash_entry **sym_hashes_end;
+ const Elf_Internal_Rela *rel;
+ const Elf_Internal_Rela *rel_end;
+ bfd *dynobj;
+ asection *sreloc;
+ bfd_vma *local_got_offsets;
+ struct elf32_arm_link_hash_table *htab;
+
+ if (info->relocatable)
+ return TRUE;
+
+ htab = elf32_arm_hash_table (info);
+ sreloc = NULL;
+
+ /* Create dynamic sections for relocatable executables so that we can
+ copy relocations. */
+ if (htab->root.is_relocatable_executable
+ && ! htab->root.dynamic_sections_created)
+ {
+ if (! _bfd_elf_link_create_dynamic_sections (abfd, info))
+ return FALSE;
+ }
- /* If we are only performing a partial link do not bother
- getting a bfd to hold the glue. */
- if (info->relocateable)
- return true;
+ dynobj = elf_hash_table (info)->dynobj;
+ local_got_offsets = elf_local_got_offsets (abfd);
- globals = elf32_arm_hash_table (info);
+ symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
+ sym_hashes = elf_sym_hashes (abfd);
+ sym_hashes_end = sym_hashes
+ + symtab_hdr->sh_size / sizeof (Elf32_External_Sym);
- BFD_ASSERT (globals != NULL);
+ if (!elf_bad_symtab (abfd))
+ sym_hashes_end -= symtab_hdr->sh_info;
- if (globals->bfd_of_glue_owner != NULL)
- return true;
+ rel_end = relocs + sec->reloc_count;
+ for (rel = relocs; rel < rel_end; rel++)
+ {
+ struct elf_link_hash_entry *h;
+ struct elf32_arm_link_hash_entry *eh;
+ unsigned long r_symndx;
+ int r_type;
- sec = bfd_get_section_by_name (abfd, ARM2THUMB_GLUE_SECTION_NAME);
+ r_symndx = ELF32_R_SYM (rel->r_info);
+ r_type = ELF32_R_TYPE (rel->r_info);
+ r_type = arm_real_reloc_type (htab, r_type);
- if (sec == NULL)
- {
- flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY;
+ if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
+ {
+ (*_bfd_error_handler) (_("%B: bad symbol index: %d"), abfd,
+ r_symndx);
+ return FALSE;
+ }
+
+ if (r_symndx < symtab_hdr->sh_info)
+ h = NULL;
+ else
+ {
+ h = sym_hashes[r_symndx - symtab_hdr->sh_info];
+ while (h->root.type == bfd_link_hash_indirect
+ || h->root.type == bfd_link_hash_warning)
+ h = (struct elf_link_hash_entry *) h->root.u.i.link;
+ }
- sec = bfd_make_section (abfd, ARM2THUMB_GLUE_SECTION_NAME);
+ eh = (struct elf32_arm_link_hash_entry *) h;
- if (sec == NULL
- || !bfd_set_section_flags (abfd, sec, flags)
- || !bfd_set_section_alignment (abfd, sec, 2))
- return false;
- }
+ switch (r_type)
+ {
+ case R_ARM_GOT32:
+ case R_ARM_GOT_PREL:
+ case R_ARM_TLS_GD32:
+ case R_ARM_TLS_IE32:
+ /* This symbol requires a global offset table entry. */
+ {
+ int tls_type, old_tls_type;
- sec = bfd_get_section_by_name (abfd, THUMB2ARM_GLUE_SECTION_NAME);
+ switch (r_type)
+ {
+ case R_ARM_TLS_GD32: tls_type = GOT_TLS_GD; break;
+ case R_ARM_TLS_IE32: tls_type = GOT_TLS_IE; break;
+ default: tls_type = GOT_NORMAL; break;
+ }
- if (sec == NULL)
- {
- flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY;
+ if (h != NULL)
+ {
+ h->got.refcount++;
+ old_tls_type = elf32_arm_hash_entry (h)->tls_type;
+ }
+ else
+ {
+ bfd_signed_vma *local_got_refcounts;
+
+ /* This is a global offset table entry for a local symbol. */
+ local_got_refcounts = elf_local_got_refcounts (abfd);
+ if (local_got_refcounts == NULL)
+ {
+ bfd_size_type size;
+
+ size = symtab_hdr->sh_info;
+ size *= (sizeof (bfd_signed_vma) + sizeof(char));
+ local_got_refcounts = bfd_zalloc (abfd, size);
+ if (local_got_refcounts == NULL)
+ return FALSE;
+ elf_local_got_refcounts (abfd) = local_got_refcounts;
+ elf32_arm_local_got_tls_type (abfd)
+ = (char *) (local_got_refcounts + symtab_hdr->sh_info);
+ }
+ local_got_refcounts[r_symndx] += 1;
+ old_tls_type = elf32_arm_local_got_tls_type (abfd) [r_symndx];
+ }
- sec = bfd_make_section (abfd, THUMB2ARM_GLUE_SECTION_NAME);
+ /* We will already have issued an error message if there is a
+ TLS / non-TLS mismatch, based on the symbol type. We don't
+ support any linker relaxations. So just combine any TLS
+ types needed. */
+ if (old_tls_type != GOT_UNKNOWN && old_tls_type != GOT_NORMAL
+ && tls_type != GOT_NORMAL)
+ tls_type |= old_tls_type;
- if (sec == NULL
- || !bfd_set_section_flags (abfd, sec, flags)
- || !bfd_set_section_alignment (abfd, sec, 2))
- return false;
+ if (old_tls_type != tls_type)
+ {
+ if (h != NULL)
+ elf32_arm_hash_entry (h)->tls_type = tls_type;
+ else
+ elf32_arm_local_got_tls_type (abfd) [r_symndx] = tls_type;
+ }
+ }
+ /* Fall through */
+
+ case R_ARM_TLS_LDM32:
+ if (r_type == R_ARM_TLS_LDM32)
+ htab->tls_ldm_got.refcount++;
+ /* Fall through */
+
+ case R_ARM_GOTOFF32:
+ case R_ARM_GOTPC:
+ if (htab->sgot == NULL)
+ {
+ if (htab->root.dynobj == NULL)
+ htab->root.dynobj = abfd;
+ if (!create_got_section (htab->root.dynobj, info))
+ return FALSE;
+ }
+ break;
+
+ case R_ARM_ABS32:
+ case R_ARM_REL32:
+ case R_ARM_PC24:
+ case R_ARM_PLT32:
+ case R_ARM_CALL:
+ case R_ARM_JUMP24:
+ case R_ARM_PREL31:
+ case R_ARM_THM_CALL:
+ /* Should the interworking branches be listed here? */
+ if (h != NULL)
+ {
+ /* If this reloc is in a read-only section, we might
+ need a copy reloc. We can't check reliably at this
+ stage whether the section is read-only, as input
+ sections have not yet been mapped to output sections.
+ Tentatively set the flag for now, and correct in
+ adjust_dynamic_symbol. */
+ if (!info->shared)
+ h->non_got_ref = 1;
+
+ /* We may need a .plt entry if the function this reloc
+ refers to is in a different object. We can't tell for
+ sure yet, because something later might force the
+ symbol local. */
+ if (r_type == R_ARM_PC24
+ || r_type == R_ARM_CALL
+ || r_type == R_ARM_JUMP24
+ || r_type == R_ARM_PREL31
+ || r_type == R_ARM_PLT32
+ || r_type == R_ARM_THM_CALL)
+ h->needs_plt = 1;
+
+ /* If we create a PLT entry, this relocation will reference
+ it, even if it's an ABS32 relocation. */
+ h->plt.refcount += 1;
+
+ if (r_type == R_ARM_THM_CALL)
+ eh->plt_thumb_refcount += 1;
+ }
+
+ /* If we are creating a shared library or relocatable executable,
+ and this is a reloc against a global symbol, or a non PC
+ relative reloc against a local symbol, then we need to copy
+ the reloc into the shared library. However, if we are linking
+ with -Bsymbolic, we do not need to copy a reloc against a
+ global symbol which is defined in an object we are
+ including in the link (i.e., DEF_REGULAR is set). At
+ this point we have not seen all the input files, so it is
+ possible that DEF_REGULAR is not set now but will be set
+ later (it is never cleared). We account for that
+ possibility below by storing information in the
+ relocs_copied field of the hash table entry. */
+ if ((info->shared || htab->root.is_relocatable_executable)
+ && (sec->flags & SEC_ALLOC) != 0
+ && (r_type == R_ARM_ABS32
+ || (h != NULL && ! h->needs_plt
+ && (! info->symbolic || ! h->def_regular))))
+ {
+ struct elf32_arm_relocs_copied *p, **head;
+
+ /* When creating a shared object, we must copy these
+ reloc types into the output file. We create a reloc
+ section in dynobj and make room for this reloc. */
+ if (sreloc == NULL)
+ {
+ const char * name;
+
+ name = (bfd_elf_string_from_elf_section
+ (abfd,
+ elf_elfheader (abfd)->e_shstrndx,
+ elf_section_data (sec)->rel_hdr.sh_name));
+ if (name == NULL)
+ return FALSE;
+
+ BFD_ASSERT (strncmp (name, ".rel", 4) == 0
+ && strcmp (bfd_get_section_name (abfd, sec),
+ name + 4) == 0);
+
+ sreloc = bfd_get_section_by_name (dynobj, name);
+ if (sreloc == NULL)
+ {
+ flagword flags;
+
+ flags = (SEC_HAS_CONTENTS | SEC_READONLY
+ | SEC_IN_MEMORY | SEC_LINKER_CREATED);
+ if ((sec->flags & SEC_ALLOC) != 0
+ /* BPABI objects never have dynamic
+ relocations mapped. */
+ && !htab->symbian_p)
+ flags |= SEC_ALLOC | SEC_LOAD;
+ sreloc = bfd_make_section_with_flags (dynobj,
+ name,
+ flags);
+ if (sreloc == NULL
+ || ! bfd_set_section_alignment (dynobj, sreloc, 2))
+ return FALSE;
+ }
+
+ elf_section_data (sec)->sreloc = sreloc;
+ }
+
+ /* If this is a global symbol, we count the number of
+ relocations we need for this symbol. */
+ if (h != NULL)
+ {
+ head = &((struct elf32_arm_link_hash_entry *) h)->relocs_copied;
+ }
+ else
+ {
+ /* Track dynamic relocs needed for local syms too.
+ We really need local syms available to do this
+ easily. Oh well. */
+
+ asection *s;
+ void *vpp;
+
+ s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
+ sec, r_symndx);
+ if (s == NULL)
+ return FALSE;
+
+ vpp = &elf_section_data (s)->local_dynrel;
+ head = (struct elf32_arm_relocs_copied **) vpp;
+ }
+
+ p = *head;
+ if (p == NULL || p->section != sec)
+ {
+ bfd_size_type amt = sizeof *p;
+
+ p = bfd_alloc (htab->root.dynobj, amt);
+ if (p == NULL)
+ return FALSE;
+ p->next = *head;
+ *head = p;
+ p->section = sec;
+ p->count = 0;
+ p->pc_count = 0;
+ }
+
+ if (r_type == R_ARM_REL32)
+ p->pc_count += 1;
+ p->count += 1;
+ }
+ break;
+
+ /* This relocation describes the C++ object vtable hierarchy.
+ Reconstruct it for later use during GC. */
+ case R_ARM_GNU_VTINHERIT:
+ if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
+ return FALSE;
+ break;
+
+ /* This relocation describes which C++ vtable entries are actually
+ used. Record for later use during GC. */
+ case R_ARM_GNU_VTENTRY:
+ if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
+ return FALSE;
+ break;
+ }
}
- /* Save the bfd for later use. */
- globals->bfd_of_glue_owner = abfd;
+ return TRUE;
+}
- return true;
+/* Treat mapping symbols as special target symbols. */
+
+static bfd_boolean
+elf32_arm_is_target_special_symbol (bfd * abfd ATTRIBUTE_UNUSED, asymbol * sym)
+{
+ return bfd_is_arm_mapping_symbol_name (sym->name);
}
-boolean
-bfd_elf32_arm_process_before_allocation (abfd, link_info)
- bfd *abfd;
- struct bfd_link_info *link_info;
+/* This is a copy of elf_find_function() from elf.c except that
+ ARM mapping symbols are ignored when looking for function names
+ and STT_ARM_TFUNC is considered to a function type. */
+
+static bfd_boolean
+arm_elf_find_function (bfd * abfd ATTRIBUTE_UNUSED,
+ asection * section,
+ asymbol ** symbols,
+ bfd_vma offset,
+ const char ** filename_ptr,
+ const char ** functionname_ptr)
{
- Elf_Internal_Shdr *symtab_hdr;
- Elf_Internal_Rela *free_relocs = NULL;
- Elf_Internal_Rela *irel, *irelend;
- bfd_byte *contents = NULL;
- bfd_byte *free_contents = NULL;
- Elf32_External_Sym *extsyms = NULL;
- Elf32_External_Sym *free_extsyms = NULL;
+ const char * filename = NULL;
+ asymbol * func = NULL;
+ bfd_vma low_func = 0;
+ asymbol ** p;
- asection *sec;
- struct elf32_arm_link_hash_table *globals;
+ for (p = symbols; *p != NULL; p++)
+ {
+ elf_symbol_type *q;
- /* If we are only performing a partial link do not bother
- to construct any glue. */
- if (link_info->relocateable)
- return true;
+ q = (elf_symbol_type *) *p;
- /* Here we have a bfd that is to be included on the link. We have a hook
- to do reloc rummaging, before section sizes are nailed down. */
+ switch (ELF_ST_TYPE (q->internal_elf_sym.st_info))
+ {
+ default:
+ break;
+ case STT_FILE:
+ filename = bfd_asymbol_name (&q->symbol);
+ break;
+ case STT_FUNC:
+ case STT_ARM_TFUNC:
+ case STT_NOTYPE:
+ /* Skip $a and $t symbols. */
+ if ((q->symbol.flags & BSF_LOCAL)
+ && bfd_is_arm_mapping_symbol_name (q->symbol.name))
+ continue;
+ /* Fall through. */
+ if (bfd_get_section (&q->symbol) == section
+ && q->symbol.value >= low_func
+ && q->symbol.value <= offset)
+ {
+ func = (asymbol *) q;
+ low_func = q->symbol.value;
+ }
+ break;
+ }
+ }
- /* _bfd_coff_get_external_symbols (abfd); */
+ if (func == NULL)
+ return FALSE;
- globals = elf32_arm_hash_table (link_info);
+ if (filename_ptr)
+ *filename_ptr = filename;
+ if (functionname_ptr)
+ *functionname_ptr = bfd_asymbol_name (func);
- BFD_ASSERT (globals != NULL);
- BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
+ return TRUE;
+}
- /* Rummage around all the relocs and map the glue vectors. */
- sec = abfd->sections;
- if (sec == NULL)
- return true;
+/* Find the nearest line to a particular section and offset, for error
+ reporting. This code is a duplicate of the code in elf.c, except
+ that it uses arm_elf_find_function. */
- for (; sec != NULL; sec = sec->next)
- {
- struct internal_reloc *i;
- struct internal_reloc *rel;
+static bfd_boolean
+elf32_arm_find_nearest_line (bfd * abfd,
+ asection * section,
+ asymbol ** symbols,
+ bfd_vma offset,
+ const char ** filename_ptr,
+ const char ** functionname_ptr,
+ unsigned int * line_ptr)
+{
+ bfd_boolean found = FALSE;
- if (sec->reloc_count == 0)
- continue;
+ /* We skip _bfd_dwarf1_find_nearest_line since no known ARM toolchain uses it. */
- symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
- /* Load the relocs. */
+ if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset,
+ filename_ptr, functionname_ptr,
+ line_ptr, 0,
+ & elf_tdata (abfd)->dwarf2_find_line_info))
+ {
+ if (!*functionname_ptr)
+ arm_elf_find_function (abfd, section, symbols, offset,
+ *filename_ptr ? NULL : filename_ptr,
+ functionname_ptr);
- irel = (_bfd_elf32_link_read_relocs (abfd, sec, (PTR) NULL,
- (Elf_Internal_Rela *) NULL, false));
+ return TRUE;
+ }
- BFD_ASSERT (i != 0);
+ if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset,
+ & found, filename_ptr,
+ functionname_ptr, line_ptr,
+ & elf_tdata (abfd)->line_info))
+ return FALSE;
- irelend = irel + sec->reloc_count;
- for (; irel < irelend; irel++)
- {
- long r_type;
- unsigned long r_index;
- unsigned char code;
+ if (found && (*functionname_ptr || *line_ptr))
+ return TRUE;
- struct elf_link_hash_entry *h;
+ if (symbols == NULL)
+ return FALSE;
- r_type = ELF32_R_TYPE (irel->r_info);
- r_index = ELF32_R_SYM (irel->r_info);
+ if (! arm_elf_find_function (abfd, section, symbols, offset,
+ filename_ptr, functionname_ptr))
+ return FALSE;
- /* These are the only relocation types we care about */
- if (r_type != R_ARM_PC24
- && r_type != R_ARM_THM_PC22)
- continue;
+ *line_ptr = 0;
+ return TRUE;
+}
- /* Get the section contents if we haven't done so already. */
- if (contents == NULL)
- {
- /* Get cached copy if it exists. */
- if (elf_section_data (sec)->this_hdr.contents != NULL)
- contents = elf_section_data (sec)->this_hdr.contents;
- else
- {
- /* Go get them off disk. */
- contents = (bfd_byte *) bfd_malloc (sec->_raw_size);
- if (contents == NULL)
- goto error_return;
- free_contents = contents;
+static bfd_boolean
+elf32_arm_find_inliner_info (bfd * abfd,
+ const char ** filename_ptr,
+ const char ** functionname_ptr,
+ unsigned int * line_ptr)
+{
+ bfd_boolean found;
+ found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr,
+ functionname_ptr, line_ptr,
+ & elf_tdata (abfd)->dwarf2_find_line_info);
+ return found;
+}
- if (!bfd_get_section_contents (abfd, sec, contents,
- (file_ptr) 0, sec->_raw_size))
- goto error_return;
- }
- }
+/* Adjust a symbol defined by a dynamic object and referenced by a
+ regular object. The current definition is in some section of the
+ dynamic object, but we're not including those sections. We have to
+ change the definition to something the rest of the link can
+ understand. */
- /* Read this BFD's symbols if we haven't done so already. */
- if (extsyms == NULL)
- {
- /* Get cached copy if it exists. */
- if (symtab_hdr->contents != NULL)
- extsyms = (Elf32_External_Sym *) symtab_hdr->contents;
- else
- {
- /* Go get them off disk. */
- extsyms = ((Elf32_External_Sym *)
- bfd_malloc (symtab_hdr->sh_size));
- if (extsyms == NULL)
- goto error_return;
- free_extsyms = extsyms;
- if (bfd_seek (abfd, symtab_hdr->sh_offset, SEEK_SET) != 0
- || (bfd_read (extsyms, 1, symtab_hdr->sh_size, abfd)
- != symtab_hdr->sh_size))
- goto error_return;
- }
- }
+static bfd_boolean
+elf32_arm_adjust_dynamic_symbol (struct bfd_link_info * info,
+ struct elf_link_hash_entry * h)
+{
+ bfd * dynobj;
+ asection * s;
+ unsigned int power_of_two;
+ struct elf32_arm_link_hash_entry * eh;
+ struct elf32_arm_link_hash_table *globals;
- /* If the relocation is not against a symbol it cannot concern us. */
+ globals = elf32_arm_hash_table (info);
+ dynobj = elf_hash_table (info)->dynobj;
+
+ /* Make sure we know what is going on here. */
+ BFD_ASSERT (dynobj != NULL
+ && (h->needs_plt
+ || h->u.weakdef != NULL
+ || (h->def_dynamic
+ && h->ref_regular
+ && !h->def_regular)));
+
+ eh = (struct elf32_arm_link_hash_entry *) h;
+
+ /* If this is a function, put it in the procedure linkage table. We
+ will fill in the contents of the procedure linkage table later,
+ when we know the address of the .got section. */
+ if (h->type == STT_FUNC || h->type == STT_ARM_TFUNC
+ || h->needs_plt)
+ {
+ if (h->plt.refcount <= 0
+ || SYMBOL_CALLS_LOCAL (info, h)
+ || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
+ && h->root.type == bfd_link_hash_undefweak))
+ {
+ /* This case can occur if we saw a PLT32 reloc in an input
+ file, but the symbol was never referred to by a dynamic
+ object, or if all references were garbage collected. In
+ such a case, we don't actually need to build a procedure
+ linkage table, and we can just do a PC24 reloc instead. */
+ h->plt.offset = (bfd_vma) -1;
+ eh->plt_thumb_refcount = 0;
+ h->needs_plt = 0;
+ }
- h = NULL;
+ return TRUE;
+ }
+ else
+ {
+ /* It's possible that we incorrectly decided a .plt reloc was
+ needed for an R_ARM_PC24 or similar reloc to a non-function sym
+ in check_relocs. We can't decide accurately between function
+ and non-function syms in check-relocs; Objects loaded later in
+ the link may change h->type. So fix it now. */
+ h->plt.offset = (bfd_vma) -1;
+ eh->plt_thumb_refcount = 0;
+ }
- /* We don't care about local symbols */
- if (r_index < symtab_hdr->sh_info)
- continue;
+ /* If this is a weak symbol, and there is a real definition, the
+ processor independent code will have arranged for us to see the
+ real definition first, and we can just use the same value. */
+ if (h->u.weakdef != NULL)
+ {
+ BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
+ || h->u.weakdef->root.type == bfd_link_hash_defweak);
+ h->root.u.def.section = h->u.weakdef->root.u.def.section;
+ h->root.u.def.value = h->u.weakdef->root.u.def.value;
+ return TRUE;
+ }
- /* This is an external symbol */
- r_index -= symtab_hdr->sh_info;
- h = (struct elf_link_hash_entry *)
- elf_sym_hashes (abfd)[r_index];
+ /* If there are no non-GOT references, we do not need a copy
+ relocation. */
+ if (!h->non_got_ref)
+ return TRUE;
- /* If the relocation is against a static symbol it must be within
- the current section and so cannot be a cross ARM/Thumb relocation. */
- if (h == NULL)
- continue;
+ /* This is a reference to a symbol defined by a dynamic object which
+ is not a function. */
- switch (r_type)
- {
- case R_ARM_PC24:
- /* This one is a call from arm code. We need to look up
- the target of the call. If it is a thumb target, we
- insert glue. */
+ /* If we are creating a shared library, we must presume that the
+ only references to the symbol are via the global offset table.
+ For such cases we need not do anything here; the relocations will
+ be handled correctly by relocate_section. Relocatable executables
+ can reference data in shared objects directly, so we don't need to
+ do anything here. */
+ if (info->shared || globals->root.is_relocatable_executable)
+ return TRUE;
- if (h->other == C_THUMBEXTFUNC)
- record_arm_to_thumb_glue (link_info, h);
- break;
+ if (h->size == 0)
+ {
+ (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
+ h->root.root.string);
+ return TRUE;
+ }
- case R_ARM_THM_PC22:
+ /* We must allocate the symbol in our .dynbss section, which will
+ become part of the .bss section of the executable. There will be
+ an entry for this symbol in the .dynsym section. The dynamic
+ object will contain position independent code, so all references
+ from the dynamic object to this symbol will go through the global
+ offset table. The dynamic linker will use the .dynsym entry to
+ determine the address it must put in the global offset table, so
+ both the dynamic object and the regular object will refer to the
+ same memory location for the variable. */
+ s = bfd_get_section_by_name (dynobj, ".dynbss");
+ BFD_ASSERT (s != NULL);
- /* This one is a call from thumb code. We used to look
- for ARM_THUMB9 and ARM_THUMB12 as well. We need to look
- up the target of the call. If it is an arm target, we
- insert glue. If the symbol does not exist it will be
- given a class of C_EXT and so we will generate a stub
- for it. This is not really a problem, since the link
- is doomed anyway. */
+ /* We must generate a R_ARM_COPY reloc to tell the dynamic linker to
+ copy the initial value out of the dynamic object and into the
+ runtime process image. We need to remember the offset into the
+ .rel.bss section we are going to use. */
+ if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
+ {
+ asection *srel;
- switch (h->other)
- {
- case C_EXT:
- case C_STAT:
- case C_LABEL:
- record_thumb_to_arm_glue (link_info, h);
- break;
- default:
- ;
- }
- break;
+ srel = bfd_get_section_by_name (dynobj, ".rel.bss");
+ BFD_ASSERT (srel != NULL);
+ srel->size += sizeof (Elf32_External_Rel);
+ h->needs_copy = 1;
+ }
- default:
- break;
- }
- }
+ /* We need to figure out the alignment required for this symbol. I
+ have no idea how ELF linkers handle this. */
+ power_of_two = bfd_log2 (h->size);
+ if (power_of_two > 3)
+ power_of_two = 3;
+
+ /* Apply the required alignment. */
+ s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
+ if (power_of_two > bfd_get_section_alignment (dynobj, s))
+ {
+ if (! bfd_set_section_alignment (dynobj, s, power_of_two))
+ return FALSE;
}
- return true;
-error_return:
- if (free_relocs != NULL)
- free (free_relocs);
- if (free_contents != NULL)
- free (free_contents);
- if (free_extsyms != NULL)
- free (free_extsyms);
- return false;
+ /* Define the symbol as being at this point in the section. */
+ h->root.u.def.section = s;
+ h->root.u.def.value = s->size;
+ /* Increment the section size to make room for the symbol. */
+ s->size += h->size;
+
+ return TRUE;
}
-#define USE_RELA
-#define TARGET_UNDERSCORE '_'
+/* Allocate space in .plt, .got and associated reloc sections for
+ dynamic relocs. */
-static reloc_howto_type elf32_arm_howto_table[] =
+static bfd_boolean
+allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
{
- /* No relocation */
- HOWTO (R_ARM_NONE, /* type */
- 0, /* rightshift */
- 0, /* size (0 = byte, 1 = short, 2 = long) */
- 0, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_ARM_NONE", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0, /* dst_mask */
- false), /* pcrel_offset */
+ struct bfd_link_info *info;
+ struct elf32_arm_link_hash_table *htab;
+ struct elf32_arm_link_hash_entry *eh;
+ struct elf32_arm_relocs_copied *p;
- HOWTO (R_ARM_PC24, /* type */
- 2, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 24, /* bitsize */
- true, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_ARM_PC24", /* name */
- false, /* partial_inplace */
- 0x00ffffff, /* src_mask */
- 0x00ffffff, /* dst_mask */
- true), /* pcrel_offset */
+ eh = (struct elf32_arm_link_hash_entry *) h;
- /* 32 bit absolute */
- HOWTO (R_ARM_ABS32, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_ARM_ABS32", /* name */
- false, /* partial_inplace */
- 0xffffffff, /* src_mask */
- 0xffffffff, /* dst_mask */
- false), /* pcrel_offset */
+ if (h->root.type == bfd_link_hash_indirect)
+ return TRUE;
- /* standard 32bit pc-relative reloc */
- HOWTO (R_ARM_REL32, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- true, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_ARM_REL32", /* name */
- false, /* partial_inplace */
- 0xffffffff, /* src_mask */
- 0xffffffff, /* dst_mask */
- true), /* pcrel_offset */
+ if (h->root.type == bfd_link_hash_warning)
+ /* When warning symbols are created, they **replace** the "real"
+ entry in the hash table, thus we never get to see the real
+ symbol in a hash traversal. So look at it now. */
+ h = (struct elf_link_hash_entry *) h->root.u.i.link;
- /* 8 bit absolute */
- HOWTO (R_ARM_ABS8, /* type */
- 0, /* rightshift */
- 0, /* size (0 = byte, 1 = short, 2 = long) */
- 8, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_ARM_ABS8", /* name */
- false, /* partial_inplace */
- 0x000000ff, /* src_mask */
- 0x000000ff, /* dst_mask */
- false), /* pcrel_offset */
+ info = (struct bfd_link_info *) inf;
+ htab = elf32_arm_hash_table (info);
- /* 16 bit absolute */
- HOWTO (R_ARM_ABS16, /* type */
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_ARM_ABS16", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0, /* dst_mask */
- false), /* pcrel_offset */
+ if (htab->root.dynamic_sections_created
+ && h->plt.refcount > 0)
+ {
+ /* Make sure this symbol is output as a dynamic symbol.
+ Undefined weak syms won't yet be marked as dynamic. */
+ if (h->dynindx == -1
+ && !h->forced_local)
+ {
+ if (! bfd_elf_link_record_dynamic_symbol (info, h))
+ return FALSE;
+ }
- /* 12 bit absolute */
- HOWTO (R_ARM_ABS12, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 12, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_ARM_ABS12", /* name */
- false, /* partial_inplace */
- 0x000008ff, /* src_mask */
- 0x000008ff, /* dst_mask */
- false), /* pcrel_offset */
+ if (info->shared
+ || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
+ {
+ asection *s = htab->splt;
- HOWTO (R_ARM_THM_ABS5, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 5, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_ARM_THM_ABS5", /* name */
- false, /* partial_inplace */
- 0x000007e0, /* src_mask */
- 0x000007e0, /* dst_mask */
- false), /* pcrel_offset */
+ /* If this is the first .plt entry, make room for the special
+ first entry. */
+ if (s->size == 0)
+ s->size += htab->plt_header_size;
- HOWTO (R_ARM_THM_PC22, /* type */
- 1, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 22, /* bitsize */
- true, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_ARM_THM_PC22", /* name */
- false, /* partial_inplace */
- 0x07ff07ff, /* src_mask */
- 0x07ff07ff, /* dst_mask */
- true), /* pcrel_offset */
+ h->plt.offset = s->size;
- HOWTO (R_ARM_SBREL32, /* type */
- 0, /* rightshift */
- 0, /* size (0 = byte, 1 = short, 2 = long) */
- 0, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_ARM_SBREL32", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0, /* dst_mask */
- false), /* pcrel_offset */
+ /* If we will insert a Thumb trampoline before this PLT, leave room
+ for it. */
+ if (!htab->use_blx && eh->plt_thumb_refcount > 0)
+ {
+ h->plt.offset += PLT_THUMB_STUB_SIZE;
+ s->size += PLT_THUMB_STUB_SIZE;
+ }
- HOWTO (R_ARM_AMP_VCALL9, /* type */
- 1, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 8, /* bitsize */
- true, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_ARM_AMP_VCALL9", /* name */
- false, /* partial_inplace */
- 0x000000ff, /* src_mask */
- 0x000000ff, /* dst_mask */
- true), /* pcrel_offset */
+ /* If this symbol is not defined in a regular file, and we are
+ not generating a shared library, then set the symbol to this
+ location in the .plt. This is required to make function
+ pointers compare as equal between the normal executable and
+ the shared library. */
+ if (! info->shared
+ && !h->def_regular)
+ {
+ h->root.u.def.section = s;
+ h->root.u.def.value = h->plt.offset;
+
+ /* Make sure the function is not marked as Thumb, in case
+ it is the target of an ABS32 relocation, which will
+ point to the PLT entry. */
+ if (ELF_ST_TYPE (h->type) == STT_ARM_TFUNC)
+ h->type = ELF_ST_INFO (ELF_ST_BIND (h->type), STT_FUNC);
+ }
- /* 12 bit pc relative */
- HOWTO (R_ARM_THM_PC11, /* type */
- 1, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 11, /* bitsize */
- true, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_ARM_THM_PC11", /* name */
- false, /* partial_inplace */
- 0x000007ff, /* src_mask */
- 0x000007ff, /* dst_mask */
- true), /* pcrel_offset */
+ /* Make room for this entry. */
+ s->size += htab->plt_entry_size;
- /* 12 bit pc relative */
- HOWTO (R_ARM_THM_PC9, /* type */
- 1, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 8, /* bitsize */
- true, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_ARM_THM_PC9", /* name */
- false, /* partial_inplace */
- 0x000000ff, /* src_mask */
- 0x000000ff, /* dst_mask */
- true), /* pcrel_offset */
+ if (!htab->symbian_p)
+ {
+ /* We also need to make an entry in the .got.plt section, which
+ will be placed in the .got section by the linker script. */
+ eh->plt_got_offset = htab->sgotplt->size;
+ htab->sgotplt->size += 4;
+ }
-/* FILL ME IN (#13-249) */
+ /* We also need to make an entry in the .rel.plt section. */
+ htab->srelplt->size += sizeof (Elf32_External_Rel);
+ }
+ else
+ {
+ h->plt.offset = (bfd_vma) -1;
+ h->needs_plt = 0;
+ }
+ }
+ else
+ {
+ h->plt.offset = (bfd_vma) -1;
+ h->needs_plt = 0;
+ }
+ if (h->got.refcount > 0)
+ {
+ asection *s;
+ bfd_boolean dyn;
+ int tls_type = elf32_arm_hash_entry (h)->tls_type;
+ int indx;
+
+ /* Make sure this symbol is output as a dynamic symbol.
+ Undefined weak syms won't yet be marked as dynamic. */
+ if (h->dynindx == -1
+ && !h->forced_local)
+ {
+ if (! bfd_elf_link_record_dynamic_symbol (info, h))
+ return FALSE;
+ }
- HOWTO (R_ARM_RREL32, /* type */
- 0, /* rightshift */
- 0, /* size (0 = byte, 1 = short, 2 = long) */
- 0, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_ARM_RREL32", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0, /* dst_mask */
- false), /* pcrel_offset */
+ if (!htab->symbian_p)
+ {
+ s = htab->sgot;
+ h->got.offset = s->size;
- HOWTO (R_ARM_RABS32, /* type */
- 0, /* rightshift */
- 0, /* size (0 = byte, 1 = short, 2 = long) */
- 0, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_ARM_RABS32", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0, /* dst_mask */
- false), /* pcrel_offset */
+ if (tls_type == GOT_UNKNOWN)
+ abort ();
- HOWTO (R_ARM_RPC24, /* type */
- 0, /* rightshift */
- 0, /* size (0 = byte, 1 = short, 2 = long) */
- 0, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_ARM_RPC24", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0, /* dst_mask */
- false), /* pcrel_offset */
+ if (tls_type == GOT_NORMAL)
+ /* Non-TLS symbols need one GOT slot. */
+ s->size += 4;
+ else
+ {
+ if (tls_type & GOT_TLS_GD)
+ /* R_ARM_TLS_GD32 needs 2 consecutive GOT slots. */
+ s->size += 8;
+ if (tls_type & GOT_TLS_IE)
+ /* R_ARM_TLS_IE32 needs one GOT slot. */
+ s->size += 4;
+ }
- HOWTO (R_ARM_RBASE, /* type */
- 0, /* rightshift */
- 0, /* size (0 = byte, 1 = short, 2 = long) */
- 0, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_ARM_RBASE", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0, /* dst_mask */
- false), /* pcrel_offset */
+ dyn = htab->root.dynamic_sections_created;
-};
-struct elf32_arm_reloc_map
- {
- unsigned char bfd_reloc_val;
- unsigned char elf_reloc_val;
- };
+ indx = 0;
+ if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
+ && (!info->shared
+ || !SYMBOL_REFERENCES_LOCAL (info, h)))
+ indx = h->dynindx;
-static const struct elf32_arm_reloc_map elf32_arm_reloc_map[] =
-{
- {BFD_RELOC_NONE, R_ARM_NONE,},
- {BFD_RELOC_ARM_PCREL_BRANCH, R_ARM_PC24,},
- {BFD_RELOC_32, R_ARM_ABS32,},
- {BFD_RELOC_32_PCREL, R_ARM_REL32,},
- {BFD_RELOC_8, R_ARM_ABS8,},
- {BFD_RELOC_16, R_ARM_ABS16,},
- {BFD_RELOC_ARM_OFFSET_IMM, R_ARM_ABS12,},
- {BFD_RELOC_ARM_THUMB_OFFSET, R_ARM_THM_ABS5,},
- {BFD_RELOC_THUMB_PCREL_BRANCH23, R_ARM_THM_PC22,},
- {BFD_RELOC_NONE, R_ARM_SBREL32,},
- {BFD_RELOC_NONE, R_ARM_AMP_VCALL9,},
- {BFD_RELOC_THUMB_PCREL_BRANCH12, R_ARM_THM_PC11,},
- {BFD_RELOC_THUMB_PCREL_BRANCH9, R_ARM_THM_PC9,}
-};
+ if (tls_type != GOT_NORMAL
+ && (info->shared || indx != 0)
+ && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
+ || h->root.type != bfd_link_hash_undefweak))
+ {
+ if (tls_type & GOT_TLS_IE)
+ htab->srelgot->size += sizeof (Elf32_External_Rel);
-static reloc_howto_type *
-elf32_arm_reloc_type_lookup (abfd, code)
- bfd *abfd;
- bfd_reloc_code_real_type code;
-{
- unsigned int i;
+ if (tls_type & GOT_TLS_GD)
+ htab->srelgot->size += sizeof (Elf32_External_Rel);
- for (i = 0;
- i < sizeof (elf32_arm_reloc_map) / sizeof (struct elf32_arm_reloc_map);
- i++)
- {
- if (elf32_arm_reloc_map[i].bfd_reloc_val == code)
- return &elf32_arm_howto_table[elf32_arm_reloc_map[i].elf_reloc_val];
+ if ((tls_type & GOT_TLS_GD) && indx != 0)
+ htab->srelgot->size += sizeof (Elf32_External_Rel);
+ }
+ else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
+ || h->root.type != bfd_link_hash_undefweak)
+ && (info->shared
+ || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
+ htab->srelgot->size += sizeof (Elf32_External_Rel);
+ }
}
+ else
+ h->got.offset = (bfd_vma) -1;
- return NULL;
-}
+ if (eh->relocs_copied == NULL)
+ return TRUE;
-static void
-elf32_arm_info_to_howto (abfd, bfd_reloc, elf_reloc)
- bfd *abfd;
- arelent *bfd_reloc;
- Elf32_Internal_Rela *elf_reloc;
-{
- unsigned int r_type;
+ /* In the shared -Bsymbolic case, discard space allocated for
+ dynamic pc-relative relocs against symbols which turn out to be
+ defined in regular objects. For the normal shared case, discard
+ space for pc-relative relocs that have become local due to symbol
+ visibility changes. */
- r_type = ELF32_R_TYPE (elf_reloc->r_info);
- /* fixme: need range test */
- /* BFD_ASSERT (r_type < (unsigned int) R_ELF32_ARM_MAX); */
- bfd_reloc->howto = &elf32_arm_howto_table[r_type];
-}
+ if (info->shared || htab->root.is_relocatable_executable)
+ {
+ /* The only reloc that uses pc_count is R_ARM_REL32, which will
+ appear on something like ".long foo - .". We want calls to
+ protected symbols to resolve directly to the function rather
+ than going via the plt. If people want function pointer
+ comparisons to work as expected then they should avoid
+ writing assembly like ".long foo - .". */
+ if (SYMBOL_CALLS_LOCAL (info, h))
+ {
+ struct elf32_arm_relocs_copied **pp;
-/* The thumb form of a long branch is a bit finicky, because the offset
- encoding is split over two fields, each in it's own instruction. They
- can occur in any order. So given a thumb form of long branch, and an
- offset, insert the offset into the thumb branch and return finished
- instruction.
+ for (pp = &eh->relocs_copied; (p = *pp) != NULL; )
+ {
+ p->count -= p->pc_count;
+ p->pc_count = 0;
+ if (p->count == 0)
+ *pp = p->next;
+ else
+ pp = &p->next;
+ }
+ }
- It takes two thumb instructions to encode the target address. Each has
- 11 bits to invest. The upper 11 bits are stored in one (identifed by
- H-0.. see below), the lower 11 bits are stored in the other (identified
- by H-1).
+ /* Also discard relocs on undefined weak syms with non-default
+ visibility. */
+ if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
+ && h->root.type == bfd_link_hash_undefweak)
+ eh->relocs_copied = NULL;
+ else if (htab->root.is_relocatable_executable && h->dynindx == -1
+ && h->root.type == bfd_link_hash_new)
+ {
+ /* Output absolute symbols so that we can create relocations
+ against them. For normal symbols we output a relocation
+ against the section that contains them. */
+ if (! bfd_elf_link_record_dynamic_symbol (info, h))
+ return FALSE;
+ }
- Combine together and shifted left by 1 (it's a half word address) and
- there you have it.
+ }
+ else
+ {
+ /* For the non-shared case, discard space for relocs against
+ symbols which turn out to need copy relocs or are not
+ dynamic. */
+
+ if (!h->non_got_ref
+ && ((h->def_dynamic
+ && !h->def_regular)
+ || (htab->root.dynamic_sections_created
+ && (h->root.type == bfd_link_hash_undefweak
+ || h->root.type == bfd_link_hash_undefined))))
+ {
+ /* Make sure this symbol is output as a dynamic symbol.
+ Undefined weak syms won't yet be marked as dynamic. */
+ if (h->dynindx == -1
+ && !h->forced_local)
+ {
+ if (! bfd_elf_link_record_dynamic_symbol (info, h))
+ return FALSE;
+ }
- Op: 1111 = F,
- H-0, upper address-0 = 000
- Op: 1111 = F,
- H-1, lower address-0 = 800
+ /* If that succeeded, we know we'll be keeping all the
+ relocs. */
+ if (h->dynindx != -1)
+ goto keep;
+ }
- They can be ordered either way, but the arm tools I've seen always put
- the lower one first. It probably doesn't matter. krk@cygnus.com
+ eh->relocs_copied = NULL;
- XXX: Actually the order does matter. The second instruction (H-1)
- moves the computed address into the PC, so it must be the second one
- in the sequence. The problem, however is that whilst little endian code
- stores the instructions in HI then LOW order, big endian code does the
- reverse. nickc@cygnus.com */
+ keep: ;
+ }
+
+ /* Finally, allocate space. */
+ for (p = eh->relocs_copied; p != NULL; p = p->next)
+ {
+ asection *sreloc = elf_section_data (p->section)->sreloc;
+ sreloc->size += p->count * sizeof (Elf32_External_Rel);
+ }
-#define LOW_HI_ORDER 0xF800F000
-#define HI_LOW_ORDER 0xF000F800
+ return TRUE;
+}
-static insn32
-insert_thumb_branch (br_insn, rel_off)
- insn32 br_insn;
- int rel_off;
-{
- unsigned int low_bits;
- unsigned int high_bits;
+/* Find any dynamic relocs that apply to read-only sections. */
+static bfd_boolean
+elf32_arm_readonly_dynrelocs (struct elf_link_hash_entry *h, PTR inf)
+{
+ struct elf32_arm_link_hash_entry *eh;
+ struct elf32_arm_relocs_copied *p;
- BFD_ASSERT ((rel_off & 1) != 1);
+ if (h->root.type == bfd_link_hash_warning)
+ h = (struct elf_link_hash_entry *) h->root.u.i.link;
- rel_off >>= 1; /* half word aligned address */
- low_bits = rel_off & 0x000007FF; /* the bottom 11 bits */
- high_bits = (rel_off >> 11) & 0x000007FF; /* the top 11 bits */
+ eh = (struct elf32_arm_link_hash_entry *) h;
+ for (p = eh->relocs_copied; p != NULL; p = p->next)
+ {
+ asection *s = p->section;
- if ((br_insn & LOW_HI_ORDER) == LOW_HI_ORDER)
- br_insn = LOW_HI_ORDER | (low_bits << 16) | high_bits;
- else if ((br_insn & HI_LOW_ORDER) == HI_LOW_ORDER)
- br_insn = HI_LOW_ORDER | (high_bits << 16) | low_bits;
- else
- abort (); /* error - not a valid branch instruction form */
+ if (s != NULL && (s->flags & SEC_READONLY) != 0)
+ {
+ struct bfd_link_info *info = (struct bfd_link_info *) inf;
- /* FIXME: abort is probably not the right call. krk@cygnus.com */
+ info->flags |= DF_TEXTREL;
- return br_insn;
+ /* Not an error, just cut short the traversal. */
+ return FALSE;
+ }
+ }
+ return TRUE;
}
-/* Thumb code calling an ARM function */
-int
-elf32_thumb_to_arm_stub (info, name, input_bfd, output_bfd, input_section,
- hit_data, sym_sec, offset, addend, val)
- struct bfd_link_info *info;
- char *name;
- bfd *input_bfd;
- bfd *output_bfd;
- asection *input_section;
- bfd_byte *hit_data;
- asection *sym_sec;
- int offset;
- int addend;
- bfd_vma val;
-{
- asection *s = 0;
- long int my_offset;
- unsigned long int tmp;
- long int ret_offset;
- struct elf_link_hash_entry *myh;
- struct elf32_arm_link_hash_table *globals;
+/* Set the sizes of the dynamic sections. */
- myh = find_thumb_glue (info, name, input_bfd);
- if (myh == NULL)
- return false;
+static bfd_boolean
+elf32_arm_size_dynamic_sections (bfd * output_bfd ATTRIBUTE_UNUSED,
+ struct bfd_link_info * info)
+{
+ bfd * dynobj;
+ asection * s;
+ bfd_boolean plt;
+ bfd_boolean relocs;
+ bfd *ibfd;
+ struct elf32_arm_link_hash_table *htab;
+
+ htab = elf32_arm_hash_table (info);
+ dynobj = elf_hash_table (info)->dynobj;
+ BFD_ASSERT (dynobj != NULL);
+
+ if (elf_hash_table (info)->dynamic_sections_created)
+ {
+ /* Set the contents of the .interp section to the interpreter. */
+ if (info->executable)
+ {
+ s = bfd_get_section_by_name (dynobj, ".interp");
+ BFD_ASSERT (s != NULL);
+ s->size = sizeof ELF_DYNAMIC_INTERPRETER;
+ s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
+ }
+ }
- globals = elf32_arm_hash_table (info);
+ /* Set up .got offsets for local syms, and space for local dynamic
+ relocs. */
+ for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
+ {
+ bfd_signed_vma *local_got;
+ bfd_signed_vma *end_local_got;
+ char *local_tls_type;
+ bfd_size_type locsymcount;
+ Elf_Internal_Shdr *symtab_hdr;
+ asection *srel;
+
+ if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
+ continue;
- BFD_ASSERT (globals != NULL);
- BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
+ for (s = ibfd->sections; s != NULL; s = s->next)
+ {
+ struct elf32_arm_relocs_copied *p;
- my_offset = myh->root.u.def.value;
+ for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
+ {
+ if (!bfd_is_abs_section (p->section)
+ && bfd_is_abs_section (p->section->output_section))
+ {
+ /* Input section has been discarded, either because
+ it is a copy of a linkonce section or due to
+ linker script /DISCARD/, so we'll be discarding
+ the relocs too. */
+ }
+ else if (p->count != 0)
+ {
+ srel = elf_section_data (p->section)->sreloc;
+ srel->size += p->count * sizeof (Elf32_External_Rel);
+ if ((p->section->output_section->flags & SEC_READONLY) != 0)
+ info->flags |= DF_TEXTREL;
+ }
+ }
+ }
- s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
- THUMB2ARM_GLUE_SECTION_NAME);
+ local_got = elf_local_got_refcounts (ibfd);
+ if (!local_got)
+ continue;
- BFD_ASSERT (s != NULL);
- BFD_ASSERT (s->contents != NULL);
- BFD_ASSERT (s->output_section != NULL);
+ symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
+ locsymcount = symtab_hdr->sh_info;
+ end_local_got = local_got + locsymcount;
+ local_tls_type = elf32_arm_local_got_tls_type (ibfd);
+ s = htab->sgot;
+ srel = htab->srelgot;
+ for (; local_got < end_local_got; ++local_got, ++local_tls_type)
+ {
+ if (*local_got > 0)
+ {
+ *local_got = s->size;
+ if (*local_tls_type & GOT_TLS_GD)
+ /* TLS_GD relocs need an 8-byte structure in the GOT. */
+ s->size += 8;
+ if (*local_tls_type & GOT_TLS_IE)
+ s->size += 4;
+ if (*local_tls_type == GOT_NORMAL)
+ s->size += 4;
+
+ if (info->shared || *local_tls_type == GOT_TLS_GD)
+ srel->size += sizeof (Elf32_External_Rel);
+ }
+ else
+ *local_got = (bfd_vma) -1;
+ }
+ }
- if ((my_offset & 0x01) == 0x01)
+ if (htab->tls_ldm_got.refcount > 0)
{
- if (sym_sec != NULL
- && sym_sec->owner != NULL
- && !INTERWORK_FLAG (sym_sec->owner))
+ /* Allocate two GOT entries and one dynamic relocation (if necessary)
+ for R_ARM_TLS_LDM32 relocations. */
+ htab->tls_ldm_got.offset = htab->sgot->size;
+ htab->sgot->size += 8;
+ if (info->shared)
+ htab->srelgot->size += sizeof (Elf32_External_Rel);
+ }
+ else
+ htab->tls_ldm_got.offset = -1;
+
+ /* Allocate global sym .plt and .got entries, and space for global
+ sym dynamic relocs. */
+ elf_link_hash_traverse (& htab->root, allocate_dynrelocs, info);
+
+ /* The check_relocs and adjust_dynamic_symbol entry points have
+ determined the sizes of the various dynamic sections. Allocate
+ memory for them. */
+ plt = FALSE;
+ relocs = FALSE;
+ for (s = dynobj->sections; s != NULL; s = s->next)
+ {
+ const char * name;
+
+ if ((s->flags & SEC_LINKER_CREATED) == 0)
+ continue;
+
+ /* It's OK to base decisions on the section name, because none
+ of the dynobj section names depend upon the input files. */
+ name = bfd_get_section_name (dynobj, s);
+
+ if (strcmp (name, ".plt") == 0)
{
- _bfd_error_handler
- (_ ("%s(%s): warning: interworking not enabled."),
- bfd_get_filename (sym_sec->owner), name);
- _bfd_error_handler
- (_ (" first occurrence: %s: thumb call to arm"),
- bfd_get_filename (input_bfd));
+ /* Remember whether there is a PLT. */
+ plt = s->size != 0;
+ }
+ else if (strncmp (name, ".rel", 4) == 0)
+ {
+ if (s->size != 0)
+ {
+ /* Remember whether there are any reloc sections other
+ than .rel.plt. */
+ if (strcmp (name, ".rel.plt") != 0)
+ relocs = TRUE;
+
+ /* We use the reloc_count field as a counter if we need
+ to copy relocs into the output file. */
+ s->reloc_count = 0;
+ }
+ }
+ else if (strncmp (name, ".got", 4) != 0
+ && strcmp (name, ".dynbss") != 0)
+ {
+ /* It's not one of our sections, so don't allocate space. */
+ continue;
}
- --my_offset;
- myh->root.u.def.value = my_offset;
+ if (s->size == 0)
+ {
+ /* If we don't need this section, strip it from the
+ output file. This is mostly to handle .rel.bss and
+ .rel.plt. We must create both sections in
+ create_dynamic_sections, because they must be created
+ before the linker maps input sections to output
+ sections. The linker does that before
+ adjust_dynamic_symbol is called, and it is that
+ function which decides whether anything needs to go
+ into these sections. */
+ s->flags |= SEC_EXCLUDE;
+ continue;
+ }
- bfd_put_16 (output_bfd, t2a1_bx_pc_insn,
- s->contents + my_offset);
+ if ((s->flags & SEC_HAS_CONTENTS) == 0)
+ continue;
- bfd_put_16 (output_bfd, t2a2_noop_insn,
- s->contents + my_offset + 2);
+ /* Allocate memory for the section contents. */
+ s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
+ if (s->contents == NULL)
+ return FALSE;
+ }
- ret_offset =
- ((bfd_signed_vma) val) /* Address of destination of the stub */
- - ((bfd_signed_vma)
- (s->output_offset /* Offset from the start of the current section to the start of the stubs. */
- + my_offset /* Offset of the start of this stub from the start of the stubs. */
- + s->output_section->vma) /* Address of the start of the current section. */
- + 4 /* The branch instruction is 4 bytes into the stub. */
- + 8); /* ARM branches work from the pc of the instruction + 8. */
+ if (elf_hash_table (info)->dynamic_sections_created)
+ {
+ /* Add some entries to the .dynamic section. We fill in the
+ values later, in elf32_arm_finish_dynamic_sections, but we
+ must add the entries now so that we get the correct size for
+ the .dynamic section. The DT_DEBUG entry is filled in by the
+ dynamic linker and used by the debugger. */
+#define add_dynamic_entry(TAG, VAL) \
+ _bfd_elf_add_dynamic_entry (info, TAG, VAL)
+
+ if (info->executable)
+ {
+ if (!add_dynamic_entry (DT_DEBUG, 0))
+ return FALSE;
+ }
- bfd_put_32 (output_bfd,
- t2a3_b_insn | ((ret_offset >> 2) & 0x00FFFFFF),
- s->contents + my_offset + 4);
- }
+ if (plt)
+ {
+ if ( !add_dynamic_entry (DT_PLTGOT, 0)
+ || !add_dynamic_entry (DT_PLTRELSZ, 0)
+ || !add_dynamic_entry (DT_PLTREL, DT_REL)
+ || !add_dynamic_entry (DT_JMPREL, 0))
+ return FALSE;
+ }
- BFD_ASSERT (my_offset <= globals->thumb_glue_size);
+ if (relocs)
+ {
+ if ( !add_dynamic_entry (DT_REL, 0)
+ || !add_dynamic_entry (DT_RELSZ, 0)
+ || !add_dynamic_entry (DT_RELENT, sizeof (Elf32_External_Rel)))
+ return FALSE;
+ }
- /* Now go back and fix up the original BL insn to point
- to here. */
- ret_offset =
- s->output_offset
- + my_offset
- - (input_section->output_offset
- + offset + addend)
- - 4;
+ /* If any dynamic relocs apply to a read-only section,
+ then we need a DT_TEXTREL entry. */
+ if ((info->flags & DF_TEXTREL) == 0)
+ elf_link_hash_traverse (&htab->root, elf32_arm_readonly_dynrelocs,
+ (PTR) info);
- tmp = bfd_get_32 (input_bfd, hit_data
- - input_section->vma);
+ if ((info->flags & DF_TEXTREL) != 0)
+ {
+ if (!add_dynamic_entry (DT_TEXTREL, 0))
+ return FALSE;
+ }
+ }
+#undef add_dynamic_entry
- bfd_put_32 (output_bfd,
- insert_thumb_branch (tmp, ret_offset),
- hit_data - input_section->vma);
+ return TRUE;
}
-/* Arm code calling a Thumb function */
-int
-elf32_arm_to_thumb_stub (info, name, input_bfd, output_bfd, input_section,
- hit_data, sym_sec, offset, addend, val)
+/* Finish up dynamic symbol handling. We set the contents of various
+ dynamic sections here. */
- struct bfd_link_info *info;
- char *name;
- bfd *input_bfd;
- bfd *output_bfd;
- asection *input_section;
- bfd_byte *hit_data;
- asection *sym_sec;
- int offset;
- int addend;
- bfd_vma val;
+static bfd_boolean
+elf32_arm_finish_dynamic_symbol (bfd * output_bfd, struct bfd_link_info * info,
+ struct elf_link_hash_entry * h, Elf_Internal_Sym * sym)
{
- unsigned long int tmp;
- long int my_offset;
- asection *s;
- long int ret_offset;
- struct elf_link_hash_entry *myh;
- struct elf32_arm_link_hash_table *globals;
+ bfd * dynobj;
+ struct elf32_arm_link_hash_table *htab;
+ struct elf32_arm_link_hash_entry *eh;
- myh = find_arm_glue (info, name, input_bfd);
- if (myh == NULL)
- return false;
+ dynobj = elf_hash_table (info)->dynobj;
+ htab = elf32_arm_hash_table (info);
+ eh = (struct elf32_arm_link_hash_entry *) h;
- globals = elf32_arm_hash_table (info);
+ if (h->plt.offset != (bfd_vma) -1)
+ {
+ asection * splt;
+ asection * srel;
+ bfd_byte *loc;
+ bfd_vma plt_index;
+ Elf_Internal_Rela rel;
- BFD_ASSERT (globals != NULL);
- BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
+ /* This symbol has an entry in the procedure linkage table. Set
+ it up. */
- my_offset = myh->root.u.def.value;
- s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
- ARM2THUMB_GLUE_SECTION_NAME);
- BFD_ASSERT (s != NULL);
- BFD_ASSERT (s->contents != NULL);
- BFD_ASSERT (s->output_section != NULL);
+ BFD_ASSERT (h->dynindx != -1);
- if ((my_offset & 0x01) == 0x01)
- {
- if (sym_sec != NULL
- && sym_sec->owner != NULL
- && !INTERWORK_FLAG (sym_sec->owner))
+ splt = bfd_get_section_by_name (dynobj, ".plt");
+ srel = bfd_get_section_by_name (dynobj, ".rel.plt");
+ BFD_ASSERT (splt != NULL && srel != NULL);
+
+ /* Fill in the entry in the procedure linkage table. */
+ if (htab->symbian_p)
{
- _bfd_error_handler
- (_ ("%s(%s): warning: interworking not enabled."),
- bfd_get_filename (sym_sec->owner), name);
- _bfd_error_handler
- (_ (" first occurrence: %s: arm call to thumb"),
- bfd_get_filename (input_bfd));
+ unsigned i;
+ for (i = 0; i < htab->plt_entry_size / 4; ++i)
+ bfd_put_32 (output_bfd,
+ elf32_arm_symbian_plt_entry[i],
+ splt->contents + h->plt.offset + 4 * i);
+
+ /* Fill in the entry in the .rel.plt section. */
+ rel.r_offset = (splt->output_section->vma
+ + splt->output_offset
+ + h->plt.offset + 4 * (i - 1));
+ rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_GLOB_DAT);
+
+ /* Get the index in the procedure linkage table which
+ corresponds to this symbol. This is the index of this symbol
+ in all the symbols for which we are making plt entries. The
+ first entry in the procedure linkage table is reserved. */
+ plt_index = ((h->plt.offset - htab->plt_header_size)
+ / htab->plt_entry_size);
}
- --my_offset;
- myh->root.u.def.value = my_offset;
+ else
+ {
+ bfd_vma got_offset;
+ bfd_vma got_displacement;
+ asection * sgot;
+
+ sgot = bfd_get_section_by_name (dynobj, ".got.plt");
+ BFD_ASSERT (sgot != NULL);
+
+ /* Get the offset into the .got.plt table of the entry that
+ corresponds to this function. */
+ got_offset = eh->plt_got_offset;
+
+ /* Get the index in the procedure linkage table which
+ corresponds to this symbol. This is the index of this symbol
+ in all the symbols for which we are making plt entries. The
+ first three entries in .got.plt are reserved; after that
+ symbols appear in the same order as in .plt. */
+ plt_index = (got_offset - 12) / 4;
+
+ /* Calculate the displacement between the PLT slot and the
+ entry in the GOT. The eight-byte offset accounts for the
+ value produced by adding to pc in the first instruction
+ of the PLT stub. */
+ got_displacement = (sgot->output_section->vma
+ + sgot->output_offset
+ + got_offset
+ - splt->output_section->vma
+ - splt->output_offset
+ - h->plt.offset
+ - 8);
+
+ BFD_ASSERT ((got_displacement & 0xf0000000) == 0);
+
+ if (!htab->use_blx && eh->plt_thumb_refcount > 0)
+ {
+ bfd_put_16 (output_bfd, elf32_arm_plt_thumb_stub[0],
+ splt->contents + h->plt.offset - 4);
+ bfd_put_16 (output_bfd, elf32_arm_plt_thumb_stub[1],
+ splt->contents + h->plt.offset - 2);
+ }
- bfd_put_32 (output_bfd, a2t1_ldr_insn,
- s->contents + my_offset);
+ bfd_put_32 (output_bfd, elf32_arm_plt_entry[0] | ((got_displacement & 0x0ff00000) >> 20),
+ splt->contents + h->plt.offset + 0);
+ bfd_put_32 (output_bfd, elf32_arm_plt_entry[1] | ((got_displacement & 0x000ff000) >> 12),
+ splt->contents + h->plt.offset + 4);
+ bfd_put_32 (output_bfd, elf32_arm_plt_entry[2] | (got_displacement & 0x00000fff),
+ splt->contents + h->plt.offset + 8);
+#ifdef FOUR_WORD_PLT
+ bfd_put_32 (output_bfd, elf32_arm_plt_entry[3],
+ splt->contents + h->plt.offset + 12);
+#endif
+
+ /* Fill in the entry in the global offset table. */
+ bfd_put_32 (output_bfd,
+ (splt->output_section->vma
+ + splt->output_offset),
+ sgot->contents + got_offset);
+
+ /* Fill in the entry in the .rel.plt section. */
+ rel.r_offset = (sgot->output_section->vma
+ + sgot->output_offset
+ + got_offset);
+ rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_JUMP_SLOT);
+ }
- bfd_put_32 (output_bfd, a2t2_bx_r12_insn,
- s->contents + my_offset + 4);
+ loc = srel->contents + plt_index * sizeof (Elf32_External_Rel);
+ bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
- /* It's a thumb address. Add the low order bit. */
- bfd_put_32 (output_bfd, val | a2t3_func_addr_insn,
- s->contents + my_offset + 8);
+ if (!h->def_regular)
+ {
+ /* Mark the symbol as undefined, rather than as defined in
+ the .plt section. Leave the value alone. */
+ sym->st_shndx = SHN_UNDEF;
+ /* If the symbol is weak, we do need to clear the value.
+ Otherwise, the PLT entry would provide a definition for
+ the symbol even if the symbol wasn't defined anywhere,
+ and so the symbol would never be NULL. */
+ if (!h->ref_regular_nonweak)
+ sym->st_value = 0;
+ }
}
- BFD_ASSERT (my_offset <= globals->arm_glue_size);
+ if (h->got.offset != (bfd_vma) -1
+ && (elf32_arm_hash_entry (h)->tls_type & GOT_TLS_GD) == 0
+ && (elf32_arm_hash_entry (h)->tls_type & GOT_TLS_IE) == 0)
+ {
+ asection * sgot;
+ asection * srel;
+ Elf_Internal_Rela rel;
+ bfd_byte *loc;
+
+ /* This symbol has an entry in the global offset table. Set it
+ up. */
+ sgot = bfd_get_section_by_name (dynobj, ".got");
+ srel = bfd_get_section_by_name (dynobj, ".rel.got");
+ BFD_ASSERT (sgot != NULL && srel != NULL);
+
+ rel.r_offset = (sgot->output_section->vma
+ + sgot->output_offset
+ + (h->got.offset &~ (bfd_vma) 1));
+
+ /* If this is a static link, or it is a -Bsymbolic link and the
+ symbol is defined locally or was forced to be local because
+ of a version file, we just want to emit a RELATIVE reloc.
+ The entry in the global offset table will already have been
+ initialized in the relocate_section function. */
+ if (info->shared
+ && SYMBOL_REFERENCES_LOCAL (info, h))
+ {
+ BFD_ASSERT((h->got.offset & 1) != 0);
+ rel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE);
+ }
+ else
+ {
+ BFD_ASSERT((h->got.offset & 1) == 0);
+ bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
+ rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_GLOB_DAT);
+ }
- tmp = bfd_get_32 (input_bfd, hit_data);
- tmp = tmp & 0xFF000000;
+ loc = srel->contents + srel->reloc_count++ * sizeof (Elf32_External_Rel);
+ bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
+ }
- /* Somehow these are both 4 too far, so subtract 8. */
- ret_offset = s->output_offset
- + my_offset
- + s->output_section->vma
- - (input_section->output_offset
- + input_section->output_section->vma
- + offset + addend)
- - 8;
+ if (h->needs_copy)
+ {
+ asection * s;
+ Elf_Internal_Rela rel;
+ bfd_byte *loc;
- tmp = tmp | ((ret_offset >> 2) & 0x00FFFFFF);
+ /* This symbol needs a copy reloc. Set it up. */
+ BFD_ASSERT (h->dynindx != -1
+ && (h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak));
+
+ s = bfd_get_section_by_name (h->root.u.def.section->owner,
+ ".rel.bss");
+ BFD_ASSERT (s != NULL);
+
+ rel.r_offset = (h->root.u.def.value
+ + h->root.u.def.section->output_section->vma
+ + h->root.u.def.section->output_offset);
+ rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_COPY);
+ loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rel);
+ bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
+ }
- bfd_put_32 (output_bfd, tmp, hit_data
- - input_section->vma);
+ /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
+ if (strcmp (h->root.root.string, "_DYNAMIC") == 0
+ || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
+ sym->st_shndx = SHN_ABS;
+ return TRUE;
}
-/* Perform a relocation as part of a final link. */
-static bfd_reloc_status_type
-elf32_arm_final_link_relocate (howto, input_bfd, output_bfd,
- input_section, contents, offset, value,
- addend, info, sym_sec, sym_name, sym_flags)
- reloc_howto_type *howto;
- bfd *input_bfd;
- bfd *output_bfd;
- asection *input_section;
- bfd_byte *contents;
- bfd_vma offset;
- bfd_vma value;
- bfd_vma addend;
- struct bfd_link_info *info;
- asection *sym_sec;
- const char *sym_name;
- unsigned char sym_flags;
-{
- unsigned long r_type = howto->type;
- bfd_byte *hit_data = contents + offset;
+/* Finish up the dynamic sections. */
- switch (r_type)
+static bfd_boolean
+elf32_arm_finish_dynamic_sections (bfd * output_bfd, struct bfd_link_info * info)
+{
+ bfd * dynobj;
+ asection * sgot;
+ asection * sdyn;
+
+ dynobj = elf_hash_table (info)->dynobj;
+
+ sgot = bfd_get_section_by_name (dynobj, ".got.plt");
+ BFD_ASSERT (elf32_arm_hash_table (info)->symbian_p || sgot != NULL);
+ sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
+
+ if (elf_hash_table (info)->dynamic_sections_created)
{
+ asection *splt;
+ Elf32_External_Dyn *dyncon, *dynconend;
+ struct elf32_arm_link_hash_table *htab;
- case R_ARM_NONE:
- return bfd_reloc_ok;
+ htab = elf32_arm_hash_table (info);
+ splt = bfd_get_section_by_name (dynobj, ".plt");
+ BFD_ASSERT (splt != NULL && sdyn != NULL);
- case R_ARM_PC24:
- /* Arm B/BL instruction */
+ dyncon = (Elf32_External_Dyn *) sdyn->contents;
+ dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
- /* check for arm calling thumb function */
- if (sym_flags == C_THUMBSTATFUNC
- || sym_flags == C_THUMBEXTFUNC)
+ for (; dyncon < dynconend; dyncon++)
{
- elf32_arm_to_thumb_stub (info, sym_name, input_bfd, output_bfd,
- input_section, hit_data, sym_sec, offset, addend, value);
- return bfd_reloc_ok;
- }
+ Elf_Internal_Dyn dyn;
+ const char * name;
+ asection * s;
- value = value + addend;
- value -= (input_section->output_section->vma
- + input_section->output_offset + 8);
- value -= offset;
- value = value >> howto->rightshift;
+ bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
- value &= 0xffffff;
- value |= (bfd_get_32 (input_bfd, hit_data) & 0xff000000);
- bfd_put_32 (input_bfd, value, hit_data);
- return bfd_reloc_ok;
+ switch (dyn.d_tag)
+ {
+ unsigned int type;
- case R_ARM_ABS32:
- value += addend;
- if (sym_flags == C_THUMBSTATFUNC
- || sym_flags == C_THUMBEXTFUNC)
- value |= 1;
- bfd_put_32 (input_bfd, value, hit_data);
- return bfd_reloc_ok;
+ default:
+ break;
- case R_ARM_REL32:
- value -= (input_section->output_section->vma
- + input_section->output_offset);
- value += addend;
+ case DT_HASH:
+ name = ".hash";
+ goto get_vma_if_bpabi;
+ case DT_STRTAB:
+ name = ".dynstr";
+ goto get_vma_if_bpabi;
+ case DT_SYMTAB:
+ name = ".dynsym";
+ goto get_vma_if_bpabi;
+ case DT_VERSYM:
+ name = ".gnu.version";
+ goto get_vma_if_bpabi;
+ case DT_VERDEF:
+ name = ".gnu.version_d";
+ goto get_vma_if_bpabi;
+ case DT_VERNEED:
+ name = ".gnu.version_r";
+ goto get_vma_if_bpabi;
+
+ case DT_PLTGOT:
+ name = ".got";
+ goto get_vma;
+ case DT_JMPREL:
+ name = ".rel.plt";
+ get_vma:
+ s = bfd_get_section_by_name (output_bfd, name);
+ BFD_ASSERT (s != NULL);
+ if (!htab->symbian_p)
+ dyn.d_un.d_ptr = s->vma;
+ else
+ /* In the BPABI, tags in the PT_DYNAMIC section point
+ at the file offset, not the memory address, for the
+ convenience of the post linker. */
+ dyn.d_un.d_ptr = s->filepos;
+ bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
+ break;
- bfd_put_32 (input_bfd, value, hit_data);
- return bfd_reloc_ok;
+ get_vma_if_bpabi:
+ if (htab->symbian_p)
+ goto get_vma;
+ break;
- case R_ARM_ABS8:
- value += addend;
+ case DT_PLTRELSZ:
+ s = bfd_get_section_by_name (output_bfd, ".rel.plt");
+ BFD_ASSERT (s != NULL);
+ dyn.d_un.d_val = s->size;
+ bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
+ break;
+
+ case DT_RELSZ:
+ if (!htab->symbian_p)
+ {
+ /* My reading of the SVR4 ABI indicates that the
+ procedure linkage table relocs (DT_JMPREL) should be
+ included in the overall relocs (DT_REL). This is
+ what Solaris does. However, UnixWare can not handle
+ that case. Therefore, we override the DT_RELSZ entry
+ here to make it not include the JMPREL relocs. Since
+ the linker script arranges for .rel.plt to follow all
+ other relocation sections, we don't have to worry
+ about changing the DT_REL entry. */
+ s = bfd_get_section_by_name (output_bfd, ".rel.plt");
+ if (s != NULL)
+ dyn.d_un.d_val -= s->size;
+ bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
+ break;
+ }
+ /* Fall through */
+
+ case DT_REL:
+ case DT_RELA:
+ case DT_RELASZ:
+ /* In the BPABI, the DT_REL tag must point at the file
+ offset, not the VMA, of the first relocation
+ section. So, we use code similar to that in
+ elflink.c, but do not check for SHF_ALLOC on the
+ relcoation section, since relocations sections are
+ never allocated under the BPABI. The comments above
+ about Unixware notwithstanding, we include all of the
+ relocations here. */
+ if (htab->symbian_p)
+ {
+ unsigned int i;
+ type = ((dyn.d_tag == DT_REL || dyn.d_tag == DT_RELSZ)
+ ? SHT_REL : SHT_RELA);
+ dyn.d_un.d_val = 0;
+ for (i = 1; i < elf_numsections (output_bfd); i++)
+ {
+ Elf_Internal_Shdr *hdr
+ = elf_elfsections (output_bfd)[i];
+ if (hdr->sh_type == type)
+ {
+ if (dyn.d_tag == DT_RELSZ
+ || dyn.d_tag == DT_RELASZ)
+ dyn.d_un.d_val += hdr->sh_size;
+ else if ((ufile_ptr) hdr->sh_offset
+ <= dyn.d_un.d_val - 1)
+ dyn.d_un.d_val = hdr->sh_offset;
+ }
+ }
+ bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
+ }
+ break;
- if ((long) value > 0x7f || (long) value < -0x80)
- return bfd_reloc_overflow;
+ /* Set the bottom bit of DT_INIT/FINI if the
+ corresponding function is Thumb. */
+ case DT_INIT:
+ name = info->init_function;
+ goto get_sym;
+ case DT_FINI:
+ name = info->fini_function;
+ get_sym:
+ /* If it wasn't set by elf_bfd_final_link
+ then there is nothing to adjust. */
+ if (dyn.d_un.d_val != 0)
+ {
+ struct elf_link_hash_entry * eh;
+
+ eh = elf_link_hash_lookup (elf_hash_table (info), name,
+ FALSE, FALSE, TRUE);
+ if (eh != (struct elf_link_hash_entry *) NULL
+ && ELF_ST_TYPE (eh->type) == STT_ARM_TFUNC)
+ {
+ dyn.d_un.d_val |= 1;
+ bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
+ }
+ }
+ break;
+ }
+ }
- bfd_put_8 (input_bfd, value, hit_data);
- return bfd_reloc_ok;
+ /* Fill in the first entry in the procedure linkage table. */
+ if (splt->size > 0 && elf32_arm_hash_table (info)->plt_header_size)
+ {
+ bfd_vma got_displacement;
+
+ /* Calculate the displacement between the PLT slot and &GOT[0]. */
+ got_displacement = (sgot->output_section->vma
+ + sgot->output_offset
+ - splt->output_section->vma
+ - splt->output_offset
+ - 16);
+
+ bfd_put_32 (output_bfd, elf32_arm_plt0_entry[0], splt->contents + 0);
+ bfd_put_32 (output_bfd, elf32_arm_plt0_entry[1], splt->contents + 4);
+ bfd_put_32 (output_bfd, elf32_arm_plt0_entry[2], splt->contents + 8);
+ bfd_put_32 (output_bfd, elf32_arm_plt0_entry[3], splt->contents + 12);
+#ifdef FOUR_WORD_PLT
+ /* The displacement value goes in the otherwise-unused last word of
+ the second entry. */
+ bfd_put_32 (output_bfd, got_displacement, splt->contents + 28);
+#else
+ bfd_put_32 (output_bfd, got_displacement, splt->contents + 16);
+#endif
+ }
- case R_ARM_ABS16:
- value += addend;
+ /* UnixWare sets the entsize of .plt to 4, although that doesn't
+ really seem like the right value. */
+ elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4;
+ }
- if ((long) value > 0x7fff || (long) value < -0x8000)
- return bfd_reloc_overflow;
+ /* Fill in the first three entries in the global offset table. */
+ if (sgot)
+ {
+ if (sgot->size > 0)
+ {
+ if (sdyn == NULL)
+ bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
+ else
+ bfd_put_32 (output_bfd,
+ sdyn->output_section->vma + sdyn->output_offset,
+ sgot->contents);
+ bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
+ bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
+ }
- bfd_put_16 (input_bfd, value, hit_data);
- return bfd_reloc_ok;
+ elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
+ }
- case R_ARM_ABS12:
- /* Support ldr and str instruction for the arm */
- /* Also thumb b (unconditional branch) */
- value += addend;
+ return TRUE;
+}
- if ((long) value > 0x7ff || (long) value < -0x800)
- return bfd_reloc_overflow;
+static void
+elf32_arm_post_process_headers (bfd * abfd, struct bfd_link_info * link_info ATTRIBUTE_UNUSED)
+{
+ Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */
+ struct elf32_arm_link_hash_table *globals;
- value |= (bfd_get_32 (input_bfd, hit_data) & 0xfffff000);
- bfd_put_32 (input_bfd, value, hit_data);
- return bfd_reloc_ok;
+ i_ehdrp = elf_elfheader (abfd);
- case R_ARM_THM_ABS5:
- /* Support ldr and str instructions for the thumb. */
- value += addend;
+ if (EF_ARM_EABI_VERSION (i_ehdrp->e_flags) == EF_ARM_EABI_UNKNOWN)
+ i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_ARM;
+ else
+ i_ehdrp->e_ident[EI_OSABI] = 0;
+ i_ehdrp->e_ident[EI_ABIVERSION] = ARM_ELF_ABI_VERSION;
- if ((long) value > 0x1f || (long) value < -0x10)
- return bfd_reloc_overflow;
+ if (link_info)
+ {
+ globals = elf32_arm_hash_table (link_info);
+ if (globals->byteswap_code)
+ i_ehdrp->e_flags |= EF_ARM_BE8;
+ }
+}
- value |= bfd_get_16 (input_bfd, hit_data) & 0xf82f;
- bfd_put_16 (input_bfd, value, hit_data);
- return bfd_reloc_ok;
+static enum elf_reloc_type_class
+elf32_arm_reloc_type_class (const Elf_Internal_Rela *rela)
+{
+ switch ((int) ELF32_R_TYPE (rela->r_info))
+ {
+ case R_ARM_RELATIVE:
+ return reloc_class_relative;
+ case R_ARM_JUMP_SLOT:
+ return reloc_class_plt;
+ case R_ARM_COPY:
+ return reloc_class_copy;
+ default:
+ return reloc_class_normal;
+ }
+}
+/* Set the right machine number for an Arm ELF file. */
- case R_ARM_THM_PC22:
- /* thumb BL (branch long instruction). */
- {
- bfd_vma relocation;
- boolean overflow = false;
- bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
- bfd_vma src_mask = 0x007FFFFE;
- bfd_signed_vma reloc_signed_max = (1 << (howto->bitsize - 1)) - 1;
- bfd_signed_vma reloc_signed_min = ~reloc_signed_max;
- bfd_vma check;
- bfd_signed_vma signed_check;
- bfd_vma add;
- bfd_signed_vma signed_add;
+static bfd_boolean
+elf32_arm_section_flags (flagword *flags, const Elf_Internal_Shdr *hdr)
+{
+ if (hdr->sh_type == SHT_NOTE)
+ *flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_SAME_CONTENTS;
- if (sym_flags == C_EXT
- || sym_flags == C_STAT
- || sym_flags == C_LABEL)
- {
- elf32_thumb_to_arm_stub (info, sym_name, input_bfd, output_bfd, input_section,
- hit_data, sym_sec, offset, addend, value);
- return bfd_reloc_ok;
- }
+ return TRUE;
+}
+
+static void
+elf32_arm_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
+{
+ bfd_arm_update_notes (abfd, ARM_NOTE_SECTION);
+}
+
+/* Return TRUE if this is an unwinding table entry. */
+
+static bfd_boolean
+is_arm_elf_unwind_section_name (bfd * abfd ATTRIBUTE_UNUSED, const char * name)
+{
+ size_t len1, len2;
+
+ len1 = sizeof (ELF_STRING_ARM_unwind) - 1;
+ len2 = sizeof (ELF_STRING_ARM_unwind_once) - 1;
+ return (strncmp (name, ELF_STRING_ARM_unwind, len1) == 0
+ || strncmp (name, ELF_STRING_ARM_unwind_once, len2) == 0);
+}
- relocation = value + addend;
- relocation -= (input_section->output_section->vma + input_section->output_offset);
- relocation -= offset;
- check = relocation >> howto->rightshift;
+/* Set the type and flags for an ARM section. We do this by
+ the section name, which is a hack, but ought to work. */
- /* If this is a signed value, the rightshift just dropped
- leading 1 bits (assuming twos complement). */
- if ((bfd_signed_vma) relocation >= 0)
- signed_check = check;
- else
- signed_check = (check | ((bfd_vma) - 1 & ~((bfd_vma) - 1 >> howto->rightshift)));
+static bfd_boolean
+elf32_arm_fake_sections (bfd * abfd, Elf_Internal_Shdr * hdr, asection * sec)
+{
+ const char * name;
- /* Get the value from the object file. */
- if (bfd_big_endian (input_bfd))
- add = (((insn) & 0x07ff0000) >> 4) | (((insn) & 0x7ff) << 1);
- else
- add = ((((insn) & 0x7ff) << 12) | (((insn) & 0x07ff0000) >> 15));
+ name = bfd_get_section_name (abfd, sec);
- /* Get the value from the object file with an appropriate sign.
- The expression involving howto->src_mask isolates the upper
- bit of src_mask. If that bit is set in the value we are
- adding, it is negative, and we subtract out that number times
- two. If src_mask includes the highest possible bit, then we
- can not get the upper bit, but that does not matter since
- signed_add needs no adjustment to become negative in that case. */
+ if (is_arm_elf_unwind_section_name (abfd, name))
+ {
+ hdr->sh_type = SHT_ARM_EXIDX;
+ hdr->sh_flags |= SHF_LINK_ORDER;
+ }
+ return TRUE;
+}
- signed_add = add;
+/* Handle an ARM specific section when reading an object file. This is
+ called when bfd_section_from_shdr finds a section with an unknown
+ type. */
- if ((add & (((~src_mask) >> 1) & src_mask)) != 0)
- signed_add -= (((~src_mask) >> 1) & src_mask) << 1;
+static bfd_boolean
+elf32_arm_section_from_shdr (bfd *abfd,
+ Elf_Internal_Shdr * hdr,
+ const char *name,
+ int shindex)
+{
+ /* There ought to be a place to keep ELF backend specific flags, but
+ at the moment there isn't one. We just keep track of the
+ sections by their name, instead. Fortunately, the ABI gives
+ names for all the ARM specific sections, so we will probably get
+ away with this. */
+ switch (hdr->sh_type)
+ {
+ case SHT_ARM_EXIDX:
+ case SHT_ARM_PREEMPTMAP:
+ case SHT_ARM_ATTRIBUTES:
+ break;
- /* Add the value from the object file, shifted so that it is a
- straight number. */
- /* howto->bitpos == 0 */
+ default:
+ return FALSE;
+ }
- signed_check += signed_add;
- relocation += signed_add;
+ if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
+ return FALSE;
- /* Assumes two's complement. */
- if (signed_check > reloc_signed_max
- || signed_check < reloc_signed_min)
- overflow = true;
+ return TRUE;
+}
- /* Put RELOCATION into the correct bits: */
+/* A structure used to record a list of sections, independently
+ of the next and prev fields in the asection structure. */
+typedef struct section_list
+{
+ asection * sec;
+ struct section_list * next;
+ struct section_list * prev;
+}
+section_list;
- if (bfd_big_endian (input_bfd))
- relocation = (((relocation & 0xffe) >> 1) | ((relocation << 4) & 0x07ff0000));
- else
- relocation = (((relocation & 0xffe) << 15) | ((relocation >> 12) & 0x7ff));
+/* Unfortunately we need to keep a list of sections for which
+ an _arm_elf_section_data structure has been allocated. This
+ is because it is possible for functions like elf32_arm_write_section
+ to be called on a section which has had an elf_data_structure
+ allocated for it (and so the used_by_bfd field is valid) but
+ for which the ARM extended version of this structure - the
+ _arm_elf_section_data structure - has not been allocated. */
+static section_list * sections_with_arm_elf_section_data = NULL;
- /* Add RELOCATION to the correct bits of X: */
- insn = ((insn & ~howto->dst_mask) | relocation);
+static void
+record_section_with_arm_elf_section_data (asection * sec)
+{
+ struct section_list * entry;
+
+ entry = bfd_malloc (sizeof (* entry));
+ if (entry == NULL)
+ return;
+ entry->sec = sec;
+ entry->next = sections_with_arm_elf_section_data;
+ entry->prev = NULL;
+ if (entry->next != NULL)
+ entry->next->prev = entry;
+ sections_with_arm_elf_section_data = entry;
+}
- /* Put the relocated value back in the object file: */
- bfd_put_32 (input_bfd, insn, hit_data);
+static _arm_elf_section_data *
+get_arm_elf_section_data (asection * sec)
+{
+ struct section_list * entry;
+ static struct section_list * last_entry = NULL;
+
+ /* This is a short cut for the typical case where the sections are added
+ to the sections_with_arm_elf_section_data list in forward order and
+ then looked up here in backwards order. This makes a real difference
+ to the ld-srec/sec64k.exp linker test. */
+ if (last_entry != NULL)
+ {
+ if (last_entry->sec == sec)
+ return elf32_arm_section_data (sec);
- return (overflow ? bfd_reloc_overflow : bfd_reloc_ok);
+ if (last_entry->prev != NULL
+ && last_entry->prev->sec == sec)
+ {
+ last_entry = last_entry->prev;
+ return elf32_arm_section_data (sec);
+ }
+ }
+
+ for (entry = sections_with_arm_elf_section_data; entry; entry = entry->next)
+ if (entry->sec == sec)
+ {
+ last_entry = entry;
+ return elf32_arm_section_data (sec);
}
- break;
-
- case R_ARM_SBREL32:
- return bfd_reloc_notsupported;
- case R_ARM_AMP_VCALL9:
- return bfd_reloc_notsupported;
+ return NULL;
+}
- case R_ARM_RSBREL32:
- return bfd_reloc_notsupported;
+static void
+unrecord_section_with_arm_elf_section_data (asection * sec)
+{
+ struct section_list * entry;
- case R_ARM_THM_RPC22:
- return bfd_reloc_notsupported;
+ for (entry = sections_with_arm_elf_section_data; entry; entry = entry->next)
+ if (entry->sec == sec)
+ {
+ if (entry->prev != NULL)
+ entry->prev->next = entry->next;
+ if (entry->next != NULL)
+ entry->next->prev = entry->prev;
+ if (entry == sections_with_arm_elf_section_data)
+ sections_with_arm_elf_section_data = entry->next;
+ free (entry);
+ break;
+ }
+}
- case R_ARM_RREL32:
- return bfd_reloc_notsupported;
+/* Called for each symbol. Builds a section map based on mapping symbols.
+ Does not alter any of the symbols. */
- case R_ARM_RABS32:
- return bfd_reloc_notsupported;
+static bfd_boolean
+elf32_arm_output_symbol_hook (struct bfd_link_info *info,
+ const char *name,
+ Elf_Internal_Sym *elfsym,
+ asection *input_sec,
+ struct elf_link_hash_entry *h ATTRIBUTE_UNUSED)
+{
+ int mapcount;
+ elf32_arm_section_map *map;
+ elf32_arm_section_map *newmap;
+ _arm_elf_section_data *arm_data;
+ struct elf32_arm_link_hash_table *globals;
- case R_ARM_RPC24:
- return bfd_reloc_notsupported;
+ /* Only do this on final link. */
+ if (info->relocatable)
+ return TRUE;
- case R_ARM_RBASE:
- return bfd_reloc_notsupported;
+ /* Only build a map if we need to byteswap code. */
+ globals = elf32_arm_hash_table (info);
+ if (!globals->byteswap_code)
+ return TRUE;
+
+ /* We only want mapping symbols. */
+ if (! bfd_is_arm_mapping_symbol_name (name))
+ return TRUE;
+
+ /* If this section has not been allocated an _arm_elf_section_data
+ structure then we cannot record anything. */
+ arm_data = get_arm_elf_section_data (input_sec);
+ if (arm_data == NULL)
+ return TRUE;
+
+ mapcount = arm_data->mapcount + 1;
+ map = arm_data->map;
+ /* TODO: This may be inefficient, but we probably don't usually have many
+ mapping symbols per section. */
+ newmap = bfd_realloc (map, mapcount * sizeof (* map));
+ if (newmap != NULL)
+ {
+ arm_data->map = newmap;
+ arm_data->mapcount = mapcount;
- default:
- return bfd_reloc_notsupported;
+ map[mapcount - 1].vma = elfsym->st_value;
+ map[mapcount - 1].type = name[1];
}
+
+ return TRUE;
}
+/* Allocate target specific section data. */
-/* Relocate an ARM ELF section. */
-static boolean
-elf32_arm_relocate_section (output_bfd, info, input_bfd, input_section,
- contents, relocs, local_syms, local_sections)
- bfd *output_bfd;
- struct bfd_link_info *info;
- bfd *input_bfd;
- asection *input_section;
- bfd_byte *contents;
- Elf_Internal_Rela *relocs;
- Elf_Internal_Sym *local_syms;
- asection **local_sections;
+static bfd_boolean
+elf32_arm_new_section_hook (bfd *abfd, asection *sec)
{
- Elf_Internal_Shdr *symtab_hdr;
- struct elf_link_hash_entry **sym_hashes;
- Elf_Internal_Rela *rel, *relend;
- const char *name;
+ _arm_elf_section_data *sdata;
+ bfd_size_type amt = sizeof (*sdata);
- symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
- sym_hashes = elf_sym_hashes (input_bfd);
+ sdata = bfd_zalloc (abfd, amt);
+ if (sdata == NULL)
+ return FALSE;
+ sec->used_by_bfd = sdata;
- rel = relocs;
- relend = relocs + input_section->reloc_count;
- for (; rel < relend; rel++)
- {
- int r_type;
- reloc_howto_type *howto;
- unsigned long r_symndx;
- Elf_Internal_Sym *sym;
- asection *sec;
- struct elf_link_hash_entry *h;
- bfd_vma relocation;
- bfd_reloc_status_type r;
+ record_section_with_arm_elf_section_data (sec);
- r_symndx = ELF32_R_SYM (rel->r_info);
- r_type = ELF32_R_TYPE (rel->r_info);
- howto = elf32_arm_howto_table + r_type;
+ return _bfd_elf_new_section_hook (abfd, sec);
+}
- if (info->relocateable)
- {
- /* This is a relocateable link. We don't have to change
- anything, unless the reloc is against a section symbol,
- in which case we have to adjust according to where the
- section symbol winds up in the output section. */
- if (r_symndx < symtab_hdr->sh_info)
- {
- sym = local_syms + r_symndx;
- if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
- {
- sec = local_sections[r_symndx];
- rel->r_addend += sec->output_offset + sym->st_value;
- }
- }
- continue;
- }
+/* Used to order a list of mapping symbols by address. */
- /* This is a final link. */
- h = NULL;
- sym = NULL;
- sec = NULL;
- if (r_symndx < symtab_hdr->sh_info)
- {
- sym = local_syms + r_symndx;
- sec = local_sections[r_symndx];
- relocation = (sec->output_section->vma
- + sec->output_offset
- + sym->st_value);
- }
+static int
+elf32_arm_compare_mapping (const void * a, const void * b)
+{
+ return ((const elf32_arm_section_map *) a)->vma
+ > ((const elf32_arm_section_map *) b)->vma;
+}
+
+
+/* Do code byteswapping. Return FALSE afterwards so that the section is
+ written out as normal. */
+
+static bfd_boolean
+elf32_arm_write_section (bfd *output_bfd ATTRIBUTE_UNUSED, asection *sec,
+ bfd_byte *contents)
+{
+ int mapcount;
+ _arm_elf_section_data *arm_data;
+ elf32_arm_section_map *map;
+ bfd_vma ptr;
+ bfd_vma end;
+ bfd_vma offset;
+ bfd_byte tmp;
+ int i;
+
+ /* If this section has not been allocated an _arm_elf_section_data
+ structure then we cannot record anything. */
+ arm_data = get_arm_elf_section_data (sec);
+ if (arm_data == NULL)
+ return FALSE;
+
+ mapcount = arm_data->mapcount;
+ map = arm_data->map;
+
+ if (mapcount == 0)
+ return FALSE;
+
+ qsort (map, mapcount, sizeof (* map), elf32_arm_compare_mapping);
+
+ offset = sec->output_section->vma + sec->output_offset;
+ ptr = map[0].vma - offset;
+ for (i = 0; i < mapcount; i++)
+ {
+ if (i == mapcount - 1)
+ end = sec->size;
else
+ end = map[i + 1].vma - offset;
+
+ switch (map[i].type)
{
- h = sym_hashes[r_symndx - symtab_hdr->sh_info];
- while (h->root.type == bfd_link_hash_indirect
- || h->root.type == bfd_link_hash_warning)
- h = (struct elf_link_hash_entry *) h->root.u.i.link;
- if (h->root.type == bfd_link_hash_defined
- || h->root.type == bfd_link_hash_defweak)
+ case 'a':
+ /* Byte swap code words. */
+ while (ptr + 3 < end)
{
- sec = h->root.u.def.section;
- relocation = (h->root.u.def.value
- + sec->output_section->vma
- + sec->output_offset);
+ tmp = contents[ptr];
+ contents[ptr] = contents[ptr + 3];
+ contents[ptr + 3] = tmp;
+ tmp = contents[ptr + 1];
+ contents[ptr + 1] = contents[ptr + 2];
+ contents[ptr + 2] = tmp;
+ ptr += 4;
}
- else if (h->root.type == bfd_link_hash_undefweak)
- relocation = 0;
- else
+ break;
+
+ case 't':
+ /* Byte swap code halfwords. */
+ while (ptr + 1 < end)
{
- if (!((*info->callbacks->undefined_symbol)
- (info, h->root.root.string, input_bfd,
- input_section, rel->r_offset)))
- return false;
- relocation = 0;
+ tmp = contents[ptr];
+ contents[ptr] = contents[ptr + 1];
+ contents[ptr + 1] = tmp;
+ ptr += 2;
}
- }
+ break;
- if (h != NULL)
- name = h->root.root.string;
- else
- {
- name = (bfd_elf_string_from_elf_section
- (input_bfd, symtab_hdr->sh_link, sym->st_name));
- if (name == NULL || *name == '\0')
- name = bfd_section_name (input_bfd, sec);
+ case 'd':
+ /* Leave data alone. */
+ break;
}
-
- r = elf32_arm_final_link_relocate (howto, input_bfd, output_bfd,
- input_section,
- contents, rel->r_offset,
- relocation, rel->r_addend,
- info, sec, name,
- (h ? h->other : sym->st_other));
+ ptr = end;
+ }
+ free (map);
+ arm_data->mapcount = 0;
+ arm_data->map = NULL;
+ unrecord_section_with_arm_elf_section_data (sec);
- if (r != bfd_reloc_ok)
- {
- const char *msg = (const char *) 0;
+ return FALSE;
+}
- switch (r)
- {
- case bfd_reloc_overflow:
- if (!((*info->callbacks->reloc_overflow)
- (info, name, howto->name, (bfd_vma) 0,
- input_bfd, input_section, rel->r_offset)))
- return false;
- break;
+static void
+unrecord_section_via_map_over_sections (bfd * abfd ATTRIBUTE_UNUSED,
+ asection * sec,
+ void * ignore ATTRIBUTE_UNUSED)
+{
+ unrecord_section_with_arm_elf_section_data (sec);
+}
- case bfd_reloc_undefined:
- if (!((*info->callbacks->undefined_symbol)
- (info, name, input_bfd, input_section,
- rel->r_offset)))
- return false;
- break;
+static bfd_boolean
+elf32_arm_close_and_cleanup (bfd * abfd)
+{
+ bfd_map_over_sections (abfd, unrecord_section_via_map_over_sections, NULL);
- case bfd_reloc_outofrange:
- msg = _ ("internal error: out of range error");
- goto common_error;
+ return _bfd_elf_close_and_cleanup (abfd);
+}
- case bfd_reloc_notsupported:
- msg = _ ("internal error: unsupported relocation error");
- goto common_error;
+/* Display STT_ARM_TFUNC symbols as functions. */
- case bfd_reloc_dangerous:
- msg = _ ("internal error: dangerous error");
- goto common_error;
+static void
+elf32_arm_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED,
+ asymbol *asym)
+{
+ elf_symbol_type *elfsym = (elf_symbol_type *) asym;
- default:
- msg = _ ("internal error: unknown error");
- /* fall through */
+ if (ELF_ST_TYPE (elfsym->internal_elf_sym.st_info) == STT_ARM_TFUNC)
+ elfsym->symbol.flags |= BSF_FUNCTION;
+}
- common_error:
- if (!((*info->callbacks->warning)
- (info, msg, name, input_bfd, input_section,
- rel->r_offset)))
- return false;
- break;
- }
- }
- }
- return true;
-}
+/* Mangle thumb function symbols as we read them in. */
-/* Function to keep ARM specific flags in the ELF header. */
-static boolean
-elf32_arm_set_private_flags (abfd, flags)
- bfd *abfd;
- flagword flags;
+static void
+elf32_arm_swap_symbol_in (bfd * abfd,
+ const void *psrc,
+ const void *pshn,
+ Elf_Internal_Sym *dst)
{
- if (elf_flags_init (abfd)
- && elf_elfheader (abfd)->e_flags != flags)
- {
- if (flags & EF_INTERWORK)
- _bfd_error_handler (_ ("\
-Warning: Not setting interwork flag of %s since it has already been specified as non-interworking"),
- bfd_get_filename (abfd));
- else
- _bfd_error_handler (_ ("\
-Warning: Clearing the interwork flag of %s due to outside request"),
- bfd_get_filename (abfd));
- }
- else
+ bfd_elf32_swap_symbol_in (abfd, psrc, pshn, dst);
+
+ /* New EABI objects mark thumb function symbols by setting the low bit of
+ the address. Turn these into STT_ARM_TFUNC. */
+ if (ELF_ST_TYPE (dst->st_info) == STT_FUNC
+ && (dst->st_value & 1))
{
- elf_elfheader (abfd)->e_flags = flags;
- elf_flags_init (abfd) = true;
+ dst->st_info = ELF_ST_INFO (ELF_ST_BIND (dst->st_info), STT_ARM_TFUNC);
+ dst->st_value &= ~(bfd_vma) 1;
}
-
- return true;
}
-/* Copy backend specific data from one object module to another */
-static boolean
-elf32_arm_copy_private_bfd_data (ibfd, obfd)
- bfd *ibfd;
- bfd *obfd;
-{
- flagword in_flags;
- flagword out_flags;
- if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
- || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
- return true;
+/* Mangle thumb function symbols as we write them out. */
- in_flags = elf_elfheader (ibfd)->e_flags;
- out_flags = elf_elfheader (obfd)->e_flags;
+static void
+elf32_arm_swap_symbol_out (bfd *abfd,
+ const Elf_Internal_Sym *src,
+ void *cdst,
+ void *shndx)
+{
+ Elf_Internal_Sym newsym;
- if (elf_flags_init (obfd) && in_flags != out_flags)
+ /* We convert STT_ARM_TFUNC symbols into STT_FUNC with the low bit
+ of the address set, as per the new EABI. We do this unconditionally
+ because objcopy does not set the elf header flags until after
+ it writes out the symbol table. */
+ if (ELF_ST_TYPE (src->st_info) == STT_ARM_TFUNC)
{
- /* Cannot mix PIC and non-PIC code. */
- if ((in_flags & EF_PIC) != (out_flags & EF_PIC))
- return false;
+ newsym = *src;
+ newsym.st_info = ELF_ST_INFO (ELF_ST_BIND (src->st_info), STT_FUNC);
+ newsym.st_value |= 1;
+
+ src = &newsym;
+ }
+ bfd_elf32_swap_symbol_out (abfd, src, cdst, shndx);
+}
- /* Cannot mix APCS26 and APCS32 code. */
- if ((in_flags & EF_APCS_26) != (out_flags & EF_APCS_26))
- return false;
+/* Add the PT_ARM_EXIDX program header. */
- /* Cannot mix float APCS and non-float APCS code. */
- if ((in_flags & EF_APCS_FLOAT) != (out_flags & EF_APCS_FLOAT))
- return false;
+static bfd_boolean
+elf32_arm_modify_segment_map (bfd *abfd,
+ struct bfd_link_info *info ATTRIBUTE_UNUSED)
+{
+ struct elf_segment_map *m;
+ asection *sec;
- /* If the src and dest have different interworking flags
- then turn off the interworking bit. */
- if ((in_flags & EF_INTERWORK) != (out_flags & EF_INTERWORK))
+ sec = bfd_get_section_by_name (abfd, ".ARM.exidx");
+ if (sec != NULL && (sec->flags & SEC_LOAD) != 0)
+ {
+ /* If there is already a PT_ARM_EXIDX header, then we do not
+ want to add another one. This situation arises when running
+ "strip"; the input binary already has the header. */
+ m = elf_tdata (abfd)->segment_map;
+ while (m && m->p_type != PT_ARM_EXIDX)
+ m = m->next;
+ if (!m)
{
- if (out_flags & EF_INTERWORK)
- _bfd_error_handler (_ ("\
-Warning: Clearing the interwork flag in %s because non-interworking code in %s has been linked with it"),
- bfd_get_filename (obfd), bfd_get_filename (ibfd));
-
- in_flags &= ~EF_INTERWORK;
+ m = bfd_zalloc (abfd, sizeof (struct elf_segment_map));
+ if (m == NULL)
+ return FALSE;
+ m->p_type = PT_ARM_EXIDX;
+ m->count = 1;
+ m->sections[0] = sec;
+
+ m->next = elf_tdata (abfd)->segment_map;
+ elf_tdata (abfd)->segment_map = m;
}
}
- elf_elfheader (obfd)->e_flags = in_flags;
- elf_flags_init (obfd) = true;
-
- return true;
+ return TRUE;
}
-/* Merge backend specific data from an object file to the output
- object file when linking. */
-static boolean
-elf32_arm_merge_private_bfd_data (ibfd, obfd)
- bfd *ibfd;
- bfd *obfd;
+/* We may add a PT_ARM_EXIDX program header. */
+
+static int
+elf32_arm_additional_program_headers (bfd *abfd)
{
- flagword out_flags;
- flagword in_flags;
+ asection *sec;
- if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
- || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
- return true;
+ sec = bfd_get_section_by_name (abfd, ".ARM.exidx");
+ if (sec != NULL && (sec->flags & SEC_LOAD) != 0)
+ return 1;
+ else
+ return 0;
+}
- /* The input BFD must have had its flags initialised. */
- /* The following seems bogus to me -- The flags are initialized in
- the assembler but I don't think an elf_flags_init field is
- written into the object */
- /* BFD_ASSERT (elf_flags_init (ibfd)); */
+/* We use this to override swap_symbol_in and swap_symbol_out. */
+const struct elf_size_info elf32_arm_size_info = {
+ sizeof (Elf32_External_Ehdr),
+ sizeof (Elf32_External_Phdr),
+ sizeof (Elf32_External_Shdr),
+ sizeof (Elf32_External_Rel),
+ sizeof (Elf32_External_Rela),
+ sizeof (Elf32_External_Sym),
+ sizeof (Elf32_External_Dyn),
+ sizeof (Elf_External_Note),
+ 4,
+ 1,
+ 32, 2,
+ ELFCLASS32, EV_CURRENT,
+ bfd_elf32_write_out_phdrs,
+ bfd_elf32_write_shdrs_and_ehdr,
+ bfd_elf32_write_relocs,
+ elf32_arm_swap_symbol_in,
+ elf32_arm_swap_symbol_out,
+ bfd_elf32_slurp_reloc_table,
+ bfd_elf32_slurp_symbol_table,
+ bfd_elf32_swap_dyn_in,
+ bfd_elf32_swap_dyn_out,
+ bfd_elf32_swap_reloc_in,
+ bfd_elf32_swap_reloc_out,
+ bfd_elf32_swap_reloca_in,
+ bfd_elf32_swap_reloca_out
+};
- in_flags = elf_elfheader (ibfd)->e_flags;
- out_flags = elf_elfheader (obfd)->e_flags;
+#define ELF_ARCH bfd_arch_arm
+#define ELF_MACHINE_CODE EM_ARM
+#ifdef __QNXTARGET__
+#define ELF_MAXPAGESIZE 0x1000
+#else
+#define ELF_MAXPAGESIZE 0x8000
+#endif
+#define ELF_MINPAGESIZE 0x1000
- if (!elf_flags_init (obfd))
- {
- /* If the input is the default architecture then do not
- bother setting the flags for the output architecture,
- instead allow future merges to do this. If no future
- merges ever set these flags then they will retain their
- unitialised values, which surprise surprise, correspond
- to the default values. */
- if (bfd_get_arch_info (ibfd)->the_default)
- return true;
+#define bfd_elf32_mkobject elf32_arm_mkobject
- elf_flags_init (obfd) = true;
- elf_elfheader (obfd)->e_flags = in_flags;
+#define bfd_elf32_bfd_copy_private_bfd_data elf32_arm_copy_private_bfd_data
+#define bfd_elf32_bfd_merge_private_bfd_data elf32_arm_merge_private_bfd_data
+#define bfd_elf32_bfd_set_private_flags elf32_arm_set_private_flags
+#define bfd_elf32_bfd_print_private_bfd_data elf32_arm_print_private_bfd_data
+#define bfd_elf32_bfd_link_hash_table_create elf32_arm_link_hash_table_create
+#define bfd_elf32_bfd_reloc_type_lookup elf32_arm_reloc_type_lookup
+#define bfd_elf32_find_nearest_line elf32_arm_find_nearest_line
+#define bfd_elf32_find_inliner_info elf32_arm_find_inliner_info
+#define bfd_elf32_new_section_hook elf32_arm_new_section_hook
+#define bfd_elf32_bfd_is_target_special_symbol elf32_arm_is_target_special_symbol
+#define bfd_elf32_close_and_cleanup elf32_arm_close_and_cleanup
+
+#define elf_backend_get_symbol_type elf32_arm_get_symbol_type
+#define elf_backend_gc_mark_hook elf32_arm_gc_mark_hook
+#define elf_backend_gc_sweep_hook elf32_arm_gc_sweep_hook
+#define elf_backend_check_relocs elf32_arm_check_relocs
+#define elf_backend_relocate_section elf32_arm_relocate_section
+#define elf_backend_write_section elf32_arm_write_section
+#define elf_backend_adjust_dynamic_symbol elf32_arm_adjust_dynamic_symbol
+#define elf_backend_create_dynamic_sections elf32_arm_create_dynamic_sections
+#define elf_backend_finish_dynamic_symbol elf32_arm_finish_dynamic_symbol
+#define elf_backend_finish_dynamic_sections elf32_arm_finish_dynamic_sections
+#define elf_backend_link_output_symbol_hook elf32_arm_output_symbol_hook
+#define elf_backend_size_dynamic_sections elf32_arm_size_dynamic_sections
+#define elf_backend_post_process_headers elf32_arm_post_process_headers
+#define elf_backend_reloc_type_class elf32_arm_reloc_type_class
+#define elf_backend_object_p elf32_arm_object_p
+#define elf_backend_section_flags elf32_arm_section_flags
+#define elf_backend_fake_sections elf32_arm_fake_sections
+#define elf_backend_section_from_shdr elf32_arm_section_from_shdr
+#define elf_backend_final_write_processing elf32_arm_final_write_processing
+#define elf_backend_copy_indirect_symbol elf32_arm_copy_indirect_symbol
+#define elf_backend_symbol_processing elf32_arm_symbol_processing
+#define elf_backend_size_info elf32_arm_size_info
+#define elf_backend_modify_segment_map elf32_arm_modify_segment_map
+#define elf_backend_additional_program_headers \
+ elf32_arm_additional_program_headers
+
+#define elf_backend_can_refcount 1
+#define elf_backend_can_gc_sections 1
+#define elf_backend_plt_readonly 1
+#define elf_backend_want_got_plt 1
+#define elf_backend_want_plt_sym 0
+#define elf_backend_may_use_rel_p 1
+#define elf_backend_may_use_rela_p 0
+#define elf_backend_default_use_rela_p 0
+#define elf_backend_rela_normal 0
+
+#define elf_backend_got_header_size 12
- if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
- && bfd_get_arch_info (obfd)->the_default)
- return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd));
+#include "elf32-target.h"
+
+/* VxWorks Targets */
+
+#undef TARGET_LITTLE_SYM
+#define TARGET_LITTLE_SYM bfd_elf32_littlearm_vxworks_vec
+#undef TARGET_LITTLE_NAME
+#define TARGET_LITTLE_NAME "elf32-littlearm-vxworks"
+#undef TARGET_BIG_SYM
+#define TARGET_BIG_SYM bfd_elf32_bigarm_vxworks_vec
+#undef TARGET_BIG_NAME
+#define TARGET_BIG_NAME "elf32-bigarm-vxworks"
+
+/* Like elf32_arm_link_hash_table_create -- but overrides
+ appropriately for VxWorks. */
+static struct bfd_link_hash_table *
+elf32_arm_vxworks_link_hash_table_create (bfd *abfd)
+{
+ struct bfd_link_hash_table *ret;
- return true;
+ ret = elf32_arm_link_hash_table_create (abfd);
+ if (ret)
+ {
+ struct elf32_arm_link_hash_table *htab
+ = (struct elf32_arm_link_hash_table *)ret;
+ htab->use_rel = 0;
}
+ return ret;
+}
- /* Check flag compatibility. */
- if (in_flags == out_flags)
- return true;
+#undef elf32_bed
+#define elf32_bed elf32_arm_vxworks_bed
- /* Complain about various flag mismatches. */
+#undef bfd_elf32_bfd_link_hash_table_create
+#define bfd_elf32_bfd_link_hash_table_create \
+ elf32_arm_vxworks_link_hash_table_create
- if ((in_flags & EF_APCS_26) != (out_flags & EF_APCS_26))
- _bfd_error_handler (_ ("\
-Error: %s compiled for APCS-%d, whereas %s is compiled for APCS-%d"),
- bfd_get_filename (ibfd),
- in_flags & EF_APCS_26 ? 26 : 32,
- bfd_get_filename (obfd),
- out_flags & EF_APCS_26 ? 26 : 32);
+#undef elf_backend_may_use_rel_p
+#define elf_backend_may_use_rel_p 0
+#undef elf_backend_may_use_rela_p
+#define elf_backend_may_use_rela_p 1
+#undef elf_backend_default_use_rela_p
+#define elf_backend_default_use_rela_p 1
+#undef elf_backend_rela_normal
+#define elf_backend_rela_normal 1
- if ((in_flags & EF_APCS_FLOAT) != (out_flags & EF_APCS_FLOAT))
- _bfd_error_handler (_ ("\
-Error: %s passes floats in %s registers, whereas %s passes them in %s registers"),
- bfd_get_filename (ibfd),
- in_flags & EF_APCS_FLOAT ? _ ("float") : _ ("integer"),
- bfd_get_filename (obfd),
- out_flags & EF_APCS_26 ? _ ("float") : _ ("integer"));
+#include "elf32-target.h"
- if ((in_flags & EF_PIC) != (out_flags & EF_PIC))
- _bfd_error_handler (_ ("\
-Error: %s is compiled as position %s code, whereas %s is not"),
- bfd_get_filename (ibfd),
- in_flags & EF_PIC ? _ ("independent") : _ ("dependent"),
- bfd_get_filename (obfd));
- /* Interworking mismatch is only a warning. */
- if ((in_flags & EF_INTERWORK) != (out_flags & EF_INTERWORK))
- {
- _bfd_error_handler (_ ("\
-Warning: %s %s interworking, whereas %s %s"),
- bfd_get_filename (ibfd),
- in_flags & EF_INTERWORK ? _ ("supports") : _ ("does not support"),
- bfd_get_filename (obfd),
- out_flags & EF_INTERWORK ? _ ("does not") : _ ("does"));
- return true;
- }
+/* Symbian OS Targets */
- return false;
-}
+#undef TARGET_LITTLE_SYM
+#define TARGET_LITTLE_SYM bfd_elf32_littlearm_symbian_vec
+#undef TARGET_LITTLE_NAME
+#define TARGET_LITTLE_NAME "elf32-littlearm-symbian"
+#undef TARGET_BIG_SYM
+#define TARGET_BIG_SYM bfd_elf32_bigarm_symbian_vec
+#undef TARGET_BIG_NAME
+#define TARGET_BIG_NAME "elf32-bigarm-symbian"
-/* Display the flags field */
-static boolean
-elf32_arm_print_private_bfd_data (abfd, ptr)
- bfd *abfd;
- PTR ptr;
+/* Like elf32_arm_link_hash_table_create -- but overrides
+ appropriately for Symbian OS. */
+static struct bfd_link_hash_table *
+elf32_arm_symbian_link_hash_table_create (bfd *abfd)
{
- FILE *file = (FILE *) ptr;
+ struct bfd_link_hash_table *ret;
- BFD_ASSERT (abfd != NULL && ptr != NULL);
+ ret = elf32_arm_link_hash_table_create (abfd);
+ if (ret)
+ {
+ struct elf32_arm_link_hash_table *htab
+ = (struct elf32_arm_link_hash_table *)ret;
+ /* There is no PLT header for Symbian OS. */
+ htab->plt_header_size = 0;
+ /* The PLT entries are each three instructions. */
+ htab->plt_entry_size = 4 * NUM_ELEM (elf32_arm_symbian_plt_entry);
+ htab->symbian_p = 1;
+ /* Symbian uses armv5t or above, so use_blx is always true. */
+ htab->use_blx = 1;
+ htab->root.is_relocatable_executable = 1;
+ }
+ return ret;
+}
- /* Print normal ELF private data. */
- _bfd_elf_print_private_bfd_data (abfd, ptr);
+static const struct bfd_elf_special_section
+elf32_arm_symbian_special_sections[] =
+{
+ /* In a BPABI executable, the dynamic linking sections do not go in
+ the loadable read-only segment. The post-linker may wish to
+ refer to these sections, but they are not part of the final
+ program image. */
+ { ".dynamic", 8, 0, SHT_DYNAMIC, 0 },
+ { ".dynstr", 7, 0, SHT_STRTAB, 0 },
+ { ".dynsym", 7, 0, SHT_DYNSYM, 0 },
+ { ".got", 4, 0, SHT_PROGBITS, 0 },
+ { ".hash", 5, 0, SHT_HASH, 0 },
+ /* These sections do not need to be writable as the SymbianOS
+ postlinker will arrange things so that no dynamic relocation is
+ required. */
+ { ".init_array", 11, 0, SHT_INIT_ARRAY, SHF_ALLOC },
+ { ".fini_array", 11, 0, SHT_FINI_ARRAY, SHF_ALLOC },
+ { ".preinit_array", 14, 0, SHT_PREINIT_ARRAY, SHF_ALLOC },
+ { NULL, 0, 0, 0, 0 }
+};
- /* Ignore init flag - it may not be set, despite the flags field containing valid data. */
+static void
+elf32_arm_symbian_begin_write_processing (bfd *abfd,
+ struct bfd_link_info *link_info
+ ATTRIBUTE_UNUSED)
+{
+ /* BPABI objects are never loaded directly by an OS kernel; they are
+ processed by a postlinker first, into an OS-specific format. If
+ the D_PAGED bit is set on the file, BFD will align segments on
+ page boundaries, so that an OS can directly map the file. With
+ BPABI objects, that just results in wasted space. In addition,
+ because we clear the D_PAGED bit, map_sections_to_segments will
+ recognize that the program headers should not be mapped into any
+ loadable segment. */
+ abfd->flags &= ~D_PAGED;
+}
- /* xgettext:c-format */
- fprintf (file, _ ("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
+static bfd_boolean
+elf32_arm_symbian_modify_segment_map (bfd *abfd,
+ struct bfd_link_info *info)
+{
+ struct elf_segment_map *m;
+ asection *dynsec;
+
+ /* BPABI shared libraries and executables should have a PT_DYNAMIC
+ segment. However, because the .dynamic section is not marked
+ with SEC_LOAD, the generic ELF code will not create such a
+ segment. */
+ dynsec = bfd_get_section_by_name (abfd, ".dynamic");
+ if (dynsec)
+ {
+ m = _bfd_elf_make_dynamic_segment (abfd, dynsec);
+ m->next = elf_tdata (abfd)->segment_map;
+ elf_tdata (abfd)->segment_map = m;
+ }
- if (elf_elfheader (abfd)->e_flags & EF_INTERWORK)
- fprintf (file, _ (" [interworking enabled]"));
- else
- fprintf (file, _ (" [interworking not enabled]"));
+ /* Also call the generic arm routine. */
+ return elf32_arm_modify_segment_map (abfd, info);
+}
- if (elf_elfheader (abfd)->e_flags & EF_APCS_26)
- fprintf (file, _ (" [APCS-26]"));
- else
- fprintf (file, _ (" [APCS-32]"));
+#undef elf32_bed
+#define elf32_bed elf32_arm_symbian_bed
- if (elf_elfheader (abfd)->e_flags & EF_APCS_FLOAT)
- fprintf (file, _ (" [floats passed in float registers]"));
- else
- fprintf (file, _ (" [floats passed in integer registers]"));
+/* The dynamic sections are not allocated on SymbianOS; the postlinker
+ will process them and then discard them. */
+#undef ELF_DYNAMIC_SEC_FLAGS
+#define ELF_DYNAMIC_SEC_FLAGS \
+ (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED)
- if (elf_elfheader (abfd)->e_flags & EF_PIC)
- fprintf (file, _ (" [position independent]"));
- else
- fprintf (file, _ (" [absolute position]"));
+#undef bfd_elf32_bfd_link_hash_table_create
+#define bfd_elf32_bfd_link_hash_table_create \
+ elf32_arm_symbian_link_hash_table_create
- fputc ('\n', file);
+#undef elf_backend_special_sections
+#define elf_backend_special_sections elf32_arm_symbian_special_sections
- return true;
-}
+#undef elf_backend_begin_write_processing
+#define elf_backend_begin_write_processing \
+ elf32_arm_symbian_begin_write_processing
+#undef elf_backend_modify_segment_map
+#define elf_backend_modify_segment_map elf32_arm_symbian_modify_segment_map
-#define TARGET_LITTLE_SYM bfd_elf32_littlearm_vec
-#define TARGET_LITTLE_NAME "elf32-littlearm"
-#define TARGET_BIG_SYM bfd_elf32_bigarm_vec
-#define TARGET_BIG_NAME "elf32-bigarm"
-#define ELF_ARCH bfd_arch_arm
-#define ELF_MACHINE_CODE EM_ARM
+/* There is no .got section for BPABI objects, and hence no header. */
+#undef elf_backend_got_header_size
+#define elf_backend_got_header_size 0
-#define bfd_elf32_bfd_reloc_type_lookup elf32_arm_reloc_type_lookup
-#define elf_info_to_howto elf32_arm_info_to_howto
-#define elf_info_to_howto_rel 0
-#define elf_backend_relocate_section elf32_arm_relocate_section
-#define bfd_elf32_bfd_copy_private_bfd_data elf32_arm_copy_private_bfd_data
-#define bfd_elf32_bfd_merge_private_bfd_data elf32_arm_merge_private_bfd_data
-#define bfd_elf32_bfd_set_private_flags elf32_arm_set_private_flags
-#define bfd_elf32_bfd_print_private_bfd_data elf32_arm_print_private_bfd_data
-#define bfd_elf32_bfd_link_hash_table_create elf32_arm_link_hash_table_create
+/* Similarly, there is no .got.plt section. */
+#undef elf_backend_want_got_plt
+#define elf_backend_want_got_plt 0
-#define elf_symbol_leading_char '_'
+#undef elf_backend_may_use_rel_p
+#define elf_backend_may_use_rel_p 1
+#undef elf_backend_may_use_rela_p
+#define elf_backend_may_use_rela_p 0
+#undef elf_backend_default_use_rela_p
+#define elf_backend_default_use_rela_p 0
+#undef elf_backend_rela_normal
+#define elf_backend_rela_normal 0
#include "elf32-target.h"
-/* end-sanitize-armelf */
projects / deliverable / binutils-gdb.git / blobdiff