/* Xtensa-specific support for 32-bit ELF.
- Copyright 2003, 2004, 2005 Free Software Foundation, Inc.
+ Copyright 2003, 2004, 2005, 2006, 2007, 2008, 2009
+ Free Software Foundation, Inc.
This file is part of BFD, the Binary File Descriptor library.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
- published by the Free Software Foundation; either version 2 of the
+ published by the Free Software Foundation; either version 3 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
02110-1301, USA. */
-#include "bfd.h"
#include "sysdep.h"
+#include "bfd.h"
#include <stdarg.h>
#include <strings.h>
/* Local helper functions. */
-static bfd_boolean add_extra_plt_sections (bfd *, int);
-static char *build_encoding_error_message (xtensa_opcode, bfd_vma);
+static bfd_boolean add_extra_plt_sections (struct bfd_link_info *, int);
+static char *vsprint_msg (const char *, const char *, int, ...) ATTRIBUTE_PRINTF(2,4);
static bfd_reloc_status_type bfd_elf_xtensa_reloc
(bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
static bfd_boolean do_fix_for_relocatable_link
/* Miscellaneous utility functions. */
-static asection *elf_xtensa_get_plt_section (bfd *, int);
-static asection *elf_xtensa_get_gotplt_section (bfd *, int);
+static asection *elf_xtensa_get_plt_section (struct bfd_link_info *, int);
+static asection *elf_xtensa_get_gotplt_section (struct bfd_link_info *, int);
static asection *get_elf_r_symndx_section (bfd *, unsigned long);
static struct elf_link_hash_entry *get_elf_r_symndx_hash_entry
(bfd *, unsigned long);
static bfd_boolean is_reloc_sym_weak (bfd *, Elf_Internal_Rela *);
static bfd_boolean pcrel_reloc_fits (xtensa_opcode, int, bfd_vma, bfd_vma);
static bfd_boolean xtensa_is_property_section (asection *);
+static bfd_boolean xtensa_is_insntable_section (asection *);
static bfd_boolean xtensa_is_littable_section (asection *);
+static bfd_boolean xtensa_is_proptable_section (asection *);
static int internal_reloc_compare (const void *, const void *);
static int internal_reloc_matches (const void *, const void *);
-extern char *xtensa_get_property_section_name (asection *, const char *);
+static asection *xtensa_get_property_section (asection *, const char *);
+extern asection *xtensa_make_property_section (asection *, const char *);
static flagword xtensa_get_property_predef_flags (asection *);
/* Other functions called directly by the linker. */
typedef struct xtensa_relax_info_struct xtensa_relax_info;
-/* Total count of PLT relocations seen during check_relocs.
- The actual PLT code must be split into multiple sections and all
- the sections have to be created before size_dynamic_sections,
- where we figure out the exact number of PLT entries that will be
- needed. It is OK if this count is an overestimate, e.g., some
- relocations may be removed by GC. */
-
-static int plt_reloc_count = 0;
-
-
/* The GNU tools do not easily allow extending interfaces to pass around
the pointer to the Xtensa ISA information, so instead we add a global
variable here (in BFD) that can be used by any of the tools that need
{
HOWTO (R_XTENSA_NONE, 0, 0, 0, FALSE, 0, complain_overflow_dont,
bfd_elf_xtensa_reloc, "R_XTENSA_NONE",
- FALSE, 0x00000000, 0x00000000, FALSE),
+ FALSE, 0, 0, FALSE),
HOWTO (R_XTENSA_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
bfd_elf_xtensa_reloc, "R_XTENSA_32",
TRUE, 0xffffffff, 0xffffffff, FALSE),
+
/* Replace a 32-bit value with a value from the runtime linker (only
used by linker-generated stub functions). The r_addend value is
special: 1 means to substitute a pointer to the runtime linker's
dynamic resolver function; 2 means to substitute the link map for
the shared object. */
HOWTO (R_XTENSA_RTLD, 0, 2, 32, FALSE, 0, complain_overflow_dont,
- NULL, "R_XTENSA_RTLD",
- FALSE, 0x00000000, 0x00000000, FALSE),
+ NULL, "R_XTENSA_RTLD", FALSE, 0, 0, FALSE),
+
HOWTO (R_XTENSA_GLOB_DAT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
bfd_elf_generic_reloc, "R_XTENSA_GLOB_DAT",
- FALSE, 0xffffffff, 0xffffffff, FALSE),
+ FALSE, 0, 0xffffffff, FALSE),
HOWTO (R_XTENSA_JMP_SLOT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
bfd_elf_generic_reloc, "R_XTENSA_JMP_SLOT",
- FALSE, 0xffffffff, 0xffffffff, FALSE),
+ FALSE, 0, 0xffffffff, FALSE),
HOWTO (R_XTENSA_RELATIVE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
bfd_elf_generic_reloc, "R_XTENSA_RELATIVE",
- FALSE, 0xffffffff, 0xffffffff, FALSE),
+ FALSE, 0, 0xffffffff, FALSE),
HOWTO (R_XTENSA_PLT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
bfd_elf_xtensa_reloc, "R_XTENSA_PLT",
- FALSE, 0xffffffff, 0xffffffff, FALSE),
+ FALSE, 0, 0xffffffff, FALSE),
+
EMPTY_HOWTO (7),
+
+ /* Old relocations for backward compatibility. */
HOWTO (R_XTENSA_OP0, 0, 0, 0, TRUE, 0, complain_overflow_dont,
- bfd_elf_xtensa_reloc, "R_XTENSA_OP0",
- FALSE, 0x00000000, 0x00000000, TRUE),
+ bfd_elf_xtensa_reloc, "R_XTENSA_OP0", FALSE, 0, 0, TRUE),
HOWTO (R_XTENSA_OP1, 0, 0, 0, TRUE, 0, complain_overflow_dont,
- bfd_elf_xtensa_reloc, "R_XTENSA_OP1",
- FALSE, 0x00000000, 0x00000000, TRUE),
+ bfd_elf_xtensa_reloc, "R_XTENSA_OP1", FALSE, 0, 0, TRUE),
HOWTO (R_XTENSA_OP2, 0, 0, 0, TRUE, 0, complain_overflow_dont,
- bfd_elf_xtensa_reloc, "R_XTENSA_OP2",
- FALSE, 0x00000000, 0x00000000, TRUE),
+ bfd_elf_xtensa_reloc, "R_XTENSA_OP2", FALSE, 0, 0, TRUE),
+
/* Assembly auto-expansion. */
HOWTO (R_XTENSA_ASM_EXPAND, 0, 0, 0, TRUE, 0, complain_overflow_dont,
- bfd_elf_xtensa_reloc, "R_XTENSA_ASM_EXPAND",
- FALSE, 0x00000000, 0x00000000, FALSE),
+ bfd_elf_xtensa_reloc, "R_XTENSA_ASM_EXPAND", FALSE, 0, 0, TRUE),
/* Relax assembly auto-expansion. */
HOWTO (R_XTENSA_ASM_SIMPLIFY, 0, 0, 0, TRUE, 0, complain_overflow_dont,
- bfd_elf_xtensa_reloc, "R_XTENSA_ASM_SIMPLIFY",
- FALSE, 0x00000000, 0x00000000, TRUE),
+ bfd_elf_xtensa_reloc, "R_XTENSA_ASM_SIMPLIFY", FALSE, 0, 0, TRUE),
+
EMPTY_HOWTO (13),
- EMPTY_HOWTO (14),
+
+ HOWTO (R_XTENSA_32_PCREL, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
+ bfd_elf_xtensa_reloc, "R_XTENSA_32_PCREL",
+ FALSE, 0, 0xffffffff, TRUE),
+
/* GNU extension to record C++ vtable hierarchy. */
HOWTO (R_XTENSA_GNU_VTINHERIT, 0, 2, 0, FALSE, 0, complain_overflow_dont,
NULL, "R_XTENSA_GNU_VTINHERIT",
- FALSE, 0x00000000, 0x00000000, FALSE),
+ FALSE, 0, 0, FALSE),
/* GNU extension to record C++ vtable member usage. */
HOWTO (R_XTENSA_GNU_VTENTRY, 0, 2, 0, FALSE, 0, complain_overflow_dont,
_bfd_elf_rel_vtable_reloc_fn, "R_XTENSA_GNU_VTENTRY",
- FALSE, 0x00000000, 0x00000000, FALSE),
+ FALSE, 0, 0, FALSE),
/* Relocations for supporting difference of symbols. */
HOWTO (R_XTENSA_DIFF8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
- bfd_elf_xtensa_reloc, "R_XTENSA_DIFF8",
- FALSE, 0xffffffff, 0xffffffff, FALSE),
+ bfd_elf_xtensa_reloc, "R_XTENSA_DIFF8", FALSE, 0, 0xff, FALSE),
HOWTO (R_XTENSA_DIFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
- bfd_elf_xtensa_reloc, "R_XTENSA_DIFF16",
- FALSE, 0xffffffff, 0xffffffff, FALSE),
+ bfd_elf_xtensa_reloc, "R_XTENSA_DIFF16", FALSE, 0, 0xffff, FALSE),
HOWTO (R_XTENSA_DIFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
- bfd_elf_xtensa_reloc, "R_XTENSA_DIFF32",
- FALSE, 0xffffffff, 0xffffffff, FALSE),
+ bfd_elf_xtensa_reloc, "R_XTENSA_DIFF32", FALSE, 0, 0xffffffff, FALSE),
/* General immediate operand relocations. */
HOWTO (R_XTENSA_SLOT0_OP, 0, 0, 0, TRUE, 0, complain_overflow_dont,
- bfd_elf_xtensa_reloc, "R_XTENSA_SLOT0_OP",
- FALSE, 0x00000000, 0x00000000, TRUE),
+ bfd_elf_xtensa_reloc, "R_XTENSA_SLOT0_OP", FALSE, 0, 0, TRUE),
HOWTO (R_XTENSA_SLOT1_OP, 0, 0, 0, TRUE, 0, complain_overflow_dont,
- bfd_elf_xtensa_reloc, "R_XTENSA_SLOT1_OP",
- FALSE, 0x00000000, 0x00000000, TRUE),
+ bfd_elf_xtensa_reloc, "R_XTENSA_SLOT1_OP", FALSE, 0, 0, TRUE),
HOWTO (R_XTENSA_SLOT2_OP, 0, 0, 0, TRUE, 0, complain_overflow_dont,
- bfd_elf_xtensa_reloc, "R_XTENSA_SLOT2_OP",
- FALSE, 0x00000000, 0x00000000, TRUE),
+ bfd_elf_xtensa_reloc, "R_XTENSA_SLOT2_OP", FALSE, 0, 0, TRUE),
HOWTO (R_XTENSA_SLOT3_OP, 0, 0, 0, TRUE, 0, complain_overflow_dont,
- bfd_elf_xtensa_reloc, "R_XTENSA_SLOT3_OP",
- FALSE, 0x00000000, 0x00000000, TRUE),
+ bfd_elf_xtensa_reloc, "R_XTENSA_SLOT3_OP", FALSE, 0, 0, TRUE),
HOWTO (R_XTENSA_SLOT4_OP, 0, 0, 0, TRUE, 0, complain_overflow_dont,
- bfd_elf_xtensa_reloc, "R_XTENSA_SLOT4_OP",
- FALSE, 0x00000000, 0x00000000, TRUE),
+ bfd_elf_xtensa_reloc, "R_XTENSA_SLOT4_OP", FALSE, 0, 0, TRUE),
HOWTO (R_XTENSA_SLOT5_OP, 0, 0, 0, TRUE, 0, complain_overflow_dont,
- bfd_elf_xtensa_reloc, "R_XTENSA_SLOT5_OP",
- FALSE, 0x00000000, 0x00000000, TRUE),
+ bfd_elf_xtensa_reloc, "R_XTENSA_SLOT5_OP", FALSE, 0, 0, TRUE),
HOWTO (R_XTENSA_SLOT6_OP, 0, 0, 0, TRUE, 0, complain_overflow_dont,
- bfd_elf_xtensa_reloc, "R_XTENSA_SLOT6_OP",
- FALSE, 0x00000000, 0x00000000, TRUE),
+ bfd_elf_xtensa_reloc, "R_XTENSA_SLOT6_OP", FALSE, 0, 0, TRUE),
HOWTO (R_XTENSA_SLOT7_OP, 0, 0, 0, TRUE, 0, complain_overflow_dont,
- bfd_elf_xtensa_reloc, "R_XTENSA_SLOT7_OP",
- FALSE, 0x00000000, 0x00000000, TRUE),
+ bfd_elf_xtensa_reloc, "R_XTENSA_SLOT7_OP", FALSE, 0, 0, TRUE),
HOWTO (R_XTENSA_SLOT8_OP, 0, 0, 0, TRUE, 0, complain_overflow_dont,
- bfd_elf_xtensa_reloc, "R_XTENSA_SLOT8_OP",
- FALSE, 0x00000000, 0x00000000, TRUE),
+ bfd_elf_xtensa_reloc, "R_XTENSA_SLOT8_OP", FALSE, 0, 0, TRUE),
HOWTO (R_XTENSA_SLOT9_OP, 0, 0, 0, TRUE, 0, complain_overflow_dont,
- bfd_elf_xtensa_reloc, "R_XTENSA_SLOT9_OP",
- FALSE, 0x00000000, 0x00000000, TRUE),
+ bfd_elf_xtensa_reloc, "R_XTENSA_SLOT9_OP", FALSE, 0, 0, TRUE),
HOWTO (R_XTENSA_SLOT10_OP, 0, 0, 0, TRUE, 0, complain_overflow_dont,
- bfd_elf_xtensa_reloc, "R_XTENSA_SLOT10_OP",
- FALSE, 0x00000000, 0x00000000, TRUE),
+ bfd_elf_xtensa_reloc, "R_XTENSA_SLOT10_OP", FALSE, 0, 0, TRUE),
HOWTO (R_XTENSA_SLOT11_OP, 0, 0, 0, TRUE, 0, complain_overflow_dont,
- bfd_elf_xtensa_reloc, "R_XTENSA_SLOT11_OP",
- FALSE, 0x00000000, 0x00000000, TRUE),
+ bfd_elf_xtensa_reloc, "R_XTENSA_SLOT11_OP", FALSE, 0, 0, TRUE),
HOWTO (R_XTENSA_SLOT12_OP, 0, 0, 0, TRUE, 0, complain_overflow_dont,
- bfd_elf_xtensa_reloc, "R_XTENSA_SLOT12_OP",
- FALSE, 0x00000000, 0x00000000, TRUE),
+ bfd_elf_xtensa_reloc, "R_XTENSA_SLOT12_OP", FALSE, 0, 0, TRUE),
HOWTO (R_XTENSA_SLOT13_OP, 0, 0, 0, TRUE, 0, complain_overflow_dont,
- bfd_elf_xtensa_reloc, "R_XTENSA_SLOT13_OP",
- FALSE, 0x00000000, 0x00000000, TRUE),
+ bfd_elf_xtensa_reloc, "R_XTENSA_SLOT13_OP", FALSE, 0, 0, TRUE),
HOWTO (R_XTENSA_SLOT14_OP, 0, 0, 0, TRUE, 0, complain_overflow_dont,
- bfd_elf_xtensa_reloc, "R_XTENSA_SLOT14_OP",
- FALSE, 0x00000000, 0x00000000, TRUE),
+ bfd_elf_xtensa_reloc, "R_XTENSA_SLOT14_OP", FALSE, 0, 0, TRUE),
/* "Alternate" relocations. The meaning of these is opcode-specific. */
HOWTO (R_XTENSA_SLOT0_ALT, 0, 0, 0, TRUE, 0, complain_overflow_dont,
- bfd_elf_xtensa_reloc, "R_XTENSA_SLOT0_ALT",
- FALSE, 0x00000000, 0x00000000, TRUE),
+ bfd_elf_xtensa_reloc, "R_XTENSA_SLOT0_ALT", FALSE, 0, 0, TRUE),
HOWTO (R_XTENSA_SLOT1_ALT, 0, 0, 0, TRUE, 0, complain_overflow_dont,
- bfd_elf_xtensa_reloc, "R_XTENSA_SLOT1_ALT",
- FALSE, 0x00000000, 0x00000000, TRUE),
+ bfd_elf_xtensa_reloc, "R_XTENSA_SLOT1_ALT", FALSE, 0, 0, TRUE),
HOWTO (R_XTENSA_SLOT2_ALT, 0, 0, 0, TRUE, 0, complain_overflow_dont,
- bfd_elf_xtensa_reloc, "R_XTENSA_SLOT2_ALT",
- FALSE, 0x00000000, 0x00000000, TRUE),
+ bfd_elf_xtensa_reloc, "R_XTENSA_SLOT2_ALT", FALSE, 0, 0, TRUE),
HOWTO (R_XTENSA_SLOT3_ALT, 0, 0, 0, TRUE, 0, complain_overflow_dont,
- bfd_elf_xtensa_reloc, "R_XTENSA_SLOT3_ALT",
- FALSE, 0x00000000, 0x00000000, TRUE),
+ bfd_elf_xtensa_reloc, "R_XTENSA_SLOT3_ALT", FALSE, 0, 0, TRUE),
HOWTO (R_XTENSA_SLOT4_ALT, 0, 0, 0, TRUE, 0, complain_overflow_dont,
- bfd_elf_xtensa_reloc, "R_XTENSA_SLOT4_ALT",
- FALSE, 0x00000000, 0x00000000, TRUE),
+ bfd_elf_xtensa_reloc, "R_XTENSA_SLOT4_ALT", FALSE, 0, 0, TRUE),
HOWTO (R_XTENSA_SLOT5_ALT, 0, 0, 0, TRUE, 0, complain_overflow_dont,
- bfd_elf_xtensa_reloc, "R_XTENSA_SLOT5_ALT",
- FALSE, 0x00000000, 0x00000000, TRUE),
+ bfd_elf_xtensa_reloc, "R_XTENSA_SLOT5_ALT", FALSE, 0, 0, TRUE),
HOWTO (R_XTENSA_SLOT6_ALT, 0, 0, 0, TRUE, 0, complain_overflow_dont,
- bfd_elf_xtensa_reloc, "R_XTENSA_SLOT6_ALT",
- FALSE, 0x00000000, 0x00000000, TRUE),
+ bfd_elf_xtensa_reloc, "R_XTENSA_SLOT6_ALT", FALSE, 0, 0, TRUE),
HOWTO (R_XTENSA_SLOT7_ALT, 0, 0, 0, TRUE, 0, complain_overflow_dont,
- bfd_elf_xtensa_reloc, "R_XTENSA_SLOT7_ALT",
- FALSE, 0x00000000, 0x00000000, TRUE),
+ bfd_elf_xtensa_reloc, "R_XTENSA_SLOT7_ALT", FALSE, 0, 0, TRUE),
HOWTO (R_XTENSA_SLOT8_ALT, 0, 0, 0, TRUE, 0, complain_overflow_dont,
- bfd_elf_xtensa_reloc, "R_XTENSA_SLOT8_ALT",
- FALSE, 0x00000000, 0x00000000, TRUE),
+ bfd_elf_xtensa_reloc, "R_XTENSA_SLOT8_ALT", FALSE, 0, 0, TRUE),
HOWTO (R_XTENSA_SLOT9_ALT, 0, 0, 0, TRUE, 0, complain_overflow_dont,
- bfd_elf_xtensa_reloc, "R_XTENSA_SLOT9_ALT",
- FALSE, 0x00000000, 0x00000000, TRUE),
+ bfd_elf_xtensa_reloc, "R_XTENSA_SLOT9_ALT", FALSE, 0, 0, TRUE),
HOWTO (R_XTENSA_SLOT10_ALT, 0, 0, 0, TRUE, 0, complain_overflow_dont,
- bfd_elf_xtensa_reloc, "R_XTENSA_SLOT10_ALT",
- FALSE, 0x00000000, 0x00000000, TRUE),
+ bfd_elf_xtensa_reloc, "R_XTENSA_SLOT10_ALT", FALSE, 0, 0, TRUE),
HOWTO (R_XTENSA_SLOT11_ALT, 0, 0, 0, TRUE, 0, complain_overflow_dont,
- bfd_elf_xtensa_reloc, "R_XTENSA_SLOT11_ALT",
- FALSE, 0x00000000, 0x00000000, TRUE),
+ bfd_elf_xtensa_reloc, "R_XTENSA_SLOT11_ALT", FALSE, 0, 0, TRUE),
HOWTO (R_XTENSA_SLOT12_ALT, 0, 0, 0, TRUE, 0, complain_overflow_dont,
- bfd_elf_xtensa_reloc, "R_XTENSA_SLOT12_ALT",
- FALSE, 0x00000000, 0x00000000, TRUE),
+ bfd_elf_xtensa_reloc, "R_XTENSA_SLOT12_ALT", FALSE, 0, 0, TRUE),
HOWTO (R_XTENSA_SLOT13_ALT, 0, 0, 0, TRUE, 0, complain_overflow_dont,
- bfd_elf_xtensa_reloc, "R_XTENSA_SLOT13_ALT",
- FALSE, 0x00000000, 0x00000000, TRUE),
+ bfd_elf_xtensa_reloc, "R_XTENSA_SLOT13_ALT", FALSE, 0, 0, TRUE),
HOWTO (R_XTENSA_SLOT14_ALT, 0, 0, 0, TRUE, 0, complain_overflow_dont,
- bfd_elf_xtensa_reloc, "R_XTENSA_SLOT14_ALT",
- FALSE, 0x00000000, 0x00000000, TRUE)
+ bfd_elf_xtensa_reloc, "R_XTENSA_SLOT14_ALT", FALSE, 0, 0, TRUE),
+
+ /* TLS relocations. */
+ HOWTO (R_XTENSA_TLSDESC_FN, 0, 2, 32, FALSE, 0, complain_overflow_dont,
+ bfd_elf_xtensa_reloc, "R_XTENSA_TLSDESC_FN",
+ FALSE, 0, 0xffffffff, FALSE),
+ HOWTO (R_XTENSA_TLSDESC_ARG, 0, 2, 32, FALSE, 0, complain_overflow_dont,
+ bfd_elf_xtensa_reloc, "R_XTENSA_TLSDESC_ARG",
+ FALSE, 0, 0xffffffff, FALSE),
+ HOWTO (R_XTENSA_TLS_DTPOFF, 0, 2, 32, FALSE, 0, complain_overflow_dont,
+ bfd_elf_xtensa_reloc, "R_XTENSA_TLS_DTPOFF",
+ FALSE, 0, 0xffffffff, FALSE),
+ HOWTO (R_XTENSA_TLS_TPOFF, 0, 2, 32, FALSE, 0, complain_overflow_dont,
+ bfd_elf_xtensa_reloc, "R_XTENSA_TLS_TPOFF",
+ FALSE, 0, 0xffffffff, FALSE),
+ HOWTO (R_XTENSA_TLS_FUNC, 0, 0, 0, FALSE, 0, complain_overflow_dont,
+ bfd_elf_xtensa_reloc, "R_XTENSA_TLS_FUNC",
+ FALSE, 0, 0, FALSE),
+ HOWTO (R_XTENSA_TLS_ARG, 0, 0, 0, FALSE, 0, complain_overflow_dont,
+ bfd_elf_xtensa_reloc, "R_XTENSA_TLS_ARG",
+ FALSE, 0, 0, FALSE),
+ HOWTO (R_XTENSA_TLS_CALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
+ bfd_elf_xtensa_reloc, "R_XTENSA_TLS_CALL",
+ FALSE, 0, 0, FALSE),
};
#if DEBUG_GEN_RELOC
TRACE ("BFD_RELOC_32");
return &elf_howto_table[(unsigned) R_XTENSA_32 ];
+ case BFD_RELOC_32_PCREL:
+ TRACE ("BFD_RELOC_32_PCREL");
+ return &elf_howto_table[(unsigned) R_XTENSA_32_PCREL ];
+
case BFD_RELOC_XTENSA_DIFF8:
TRACE ("BFD_RELOC_XTENSA_DIFF8");
return &elf_howto_table[(unsigned) R_XTENSA_DIFF8 ];
TRACE ("BFD_RELOC_VTABLE_ENTRY");
return &elf_howto_table[(unsigned) R_XTENSA_GNU_VTENTRY ];
+ case BFD_RELOC_XTENSA_TLSDESC_FN:
+ TRACE ("BFD_RELOC_XTENSA_TLSDESC_FN");
+ return &elf_howto_table[(unsigned) R_XTENSA_TLSDESC_FN ];
+
+ case BFD_RELOC_XTENSA_TLSDESC_ARG:
+ TRACE ("BFD_RELOC_XTENSA_TLSDESC_ARG");
+ return &elf_howto_table[(unsigned) R_XTENSA_TLSDESC_ARG ];
+
+ case BFD_RELOC_XTENSA_TLS_DTPOFF:
+ TRACE ("BFD_RELOC_XTENSA_TLS_DTPOFF");
+ return &elf_howto_table[(unsigned) R_XTENSA_TLS_DTPOFF ];
+
+ case BFD_RELOC_XTENSA_TLS_TPOFF:
+ TRACE ("BFD_RELOC_XTENSA_TLS_TPOFF");
+ return &elf_howto_table[(unsigned) R_XTENSA_TLS_TPOFF ];
+
+ case BFD_RELOC_XTENSA_TLS_FUNC:
+ TRACE ("BFD_RELOC_XTENSA_TLS_FUNC");
+ return &elf_howto_table[(unsigned) R_XTENSA_TLS_FUNC ];
+
+ case BFD_RELOC_XTENSA_TLS_ARG:
+ TRACE ("BFD_RELOC_XTENSA_TLS_ARG");
+ return &elf_howto_table[(unsigned) R_XTENSA_TLS_ARG ];
+
+ case BFD_RELOC_XTENSA_TLS_CALL:
+ TRACE ("BFD_RELOC_XTENSA_TLS_CALL");
+ return &elf_howto_table[(unsigned) R_XTENSA_TLS_CALL ];
+
default:
if (code >= BFD_RELOC_XTENSA_SLOT0_OP
&& code <= BFD_RELOC_XTENSA_SLOT14_OP)
return NULL;
}
+static reloc_howto_type *
+elf_xtensa_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
+ const char *r_name)
+{
+ unsigned int i;
+
+ for (i = 0; i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]); i++)
+ if (elf_howto_table[i].name != NULL
+ && strcasecmp (elf_howto_table[i].name, r_name) == 0)
+ return &elf_howto_table[i];
+
+ return NULL;
+}
+
/* Given an ELF "rela" relocation, find the corresponding howto and record
it in the BFD internal arelent representation of the relocation. */
0 /* unused */
};
+/* The size of the thread control block. */
+#define TCB_SIZE 8
+
+struct elf_xtensa_link_hash_entry
+{
+ struct elf_link_hash_entry elf;
+
+ bfd_signed_vma tlsfunc_refcount;
+
+#define GOT_UNKNOWN 0
+#define GOT_NORMAL 1
+#define GOT_TLS_GD 2 /* global or local dynamic */
+#define GOT_TLS_IE 4 /* initial or local exec */
+#define GOT_TLS_ANY (GOT_TLS_GD | GOT_TLS_IE)
+ unsigned char tls_type;
+};
+
+#define elf_xtensa_hash_entry(ent) ((struct elf_xtensa_link_hash_entry *)(ent))
+
+struct elf_xtensa_obj_tdata
+{
+ struct elf_obj_tdata root;
+
+ /* tls_type for each local got entry. */
+ char *local_got_tls_type;
+
+ bfd_signed_vma *local_tlsfunc_refcounts;
+};
+
+#define elf_xtensa_tdata(abfd) \
+ ((struct elf_xtensa_obj_tdata *) (abfd)->tdata.any)
+
+#define elf_xtensa_local_got_tls_type(abfd) \
+ (elf_xtensa_tdata (abfd)->local_got_tls_type)
+
+#define elf_xtensa_local_tlsfunc_refcounts(abfd) \
+ (elf_xtensa_tdata (abfd)->local_tlsfunc_refcounts)
+
+#define is_xtensa_elf(bfd) \
+ (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
+ && elf_tdata (bfd) != NULL \
+ && elf_object_id (bfd) == XTENSA_ELF_TDATA)
+
+static bfd_boolean
+elf_xtensa_mkobject (bfd *abfd)
+{
+ return bfd_elf_allocate_object (abfd, sizeof (struct elf_xtensa_obj_tdata),
+ XTENSA_ELF_TDATA);
+}
+
+/* Xtensa ELF linker hash table. */
+
+struct elf_xtensa_link_hash_table
+{
+ struct elf_link_hash_table elf;
+
+ /* Short-cuts to get to dynamic linker sections. */
+ asection *sgot;
+ asection *sgotplt;
+ asection *srelgot;
+ asection *splt;
+ asection *srelplt;
+ asection *sgotloc;
+ asection *spltlittbl;
+
+ /* Total count of PLT relocations seen during check_relocs.
+ The actual PLT code must be split into multiple sections and all
+ the sections have to be created before size_dynamic_sections,
+ where we figure out the exact number of PLT entries that will be
+ needed. It is OK if this count is an overestimate, e.g., some
+ relocations may be removed by GC. */
+ int plt_reloc_count;
+
+ struct elf_xtensa_link_hash_entry *tlsbase;
+};
+
+/* Get the Xtensa ELF linker hash table from a link_info structure. */
+
+#define elf_xtensa_hash_table(p) \
+ ((struct elf_xtensa_link_hash_table *) ((p)->hash))
+
+/* Create an entry in an Xtensa ELF linker hash table. */
+
+static struct bfd_hash_entry *
+elf_xtensa_link_hash_newfunc (struct bfd_hash_entry *entry,
+ struct bfd_hash_table *table,
+ const char *string)
+{
+ /* Allocate the structure if it has not already been allocated by a
+ subclass. */
+ if (entry == NULL)
+ {
+ entry = bfd_hash_allocate (table,
+ sizeof (struct elf_xtensa_link_hash_entry));
+ if (entry == NULL)
+ return entry;
+ }
+
+ /* Call the allocation method of the superclass. */
+ entry = _bfd_elf_link_hash_newfunc (entry, table, string);
+ if (entry != NULL)
+ {
+ struct elf_xtensa_link_hash_entry *eh = elf_xtensa_hash_entry (entry);
+ eh->tlsfunc_refcount = 0;
+ eh->tls_type = GOT_UNKNOWN;
+ }
+
+ return entry;
+}
+
+/* Create an Xtensa ELF linker hash table. */
+
+static struct bfd_link_hash_table *
+elf_xtensa_link_hash_table_create (bfd *abfd)
+{
+ struct elf_link_hash_entry *tlsbase;
+ struct elf_xtensa_link_hash_table *ret;
+ bfd_size_type amt = sizeof (struct elf_xtensa_link_hash_table);
+
+ ret = bfd_malloc (amt);
+ if (ret == NULL)
+ return NULL;
+
+ if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
+ elf_xtensa_link_hash_newfunc,
+ sizeof (struct elf_xtensa_link_hash_entry)))
+ {
+ free (ret);
+ return NULL;
+ }
+
+ ret->sgot = NULL;
+ ret->sgotplt = NULL;
+ ret->srelgot = NULL;
+ ret->splt = NULL;
+ ret->srelplt = NULL;
+ ret->sgotloc = NULL;
+ ret->spltlittbl = NULL;
+
+ ret->plt_reloc_count = 0;
+
+ /* Create a hash entry for "_TLS_MODULE_BASE_" to speed up checking
+ for it later. */
+ tlsbase = elf_link_hash_lookup (&ret->elf, "_TLS_MODULE_BASE_",
+ TRUE, FALSE, FALSE);
+ tlsbase->root.type = bfd_link_hash_new;
+ tlsbase->root.u.undef.abfd = NULL;
+ tlsbase->non_elf = 0;
+ ret->tlsbase = elf_xtensa_hash_entry (tlsbase);
+ ret->tlsbase->tls_type = GOT_UNKNOWN;
+
+ return &ret->elf.root;
+}
+
+/* Copy the extra info we tack onto an elf_link_hash_entry. */
+
+static void
+elf_xtensa_copy_indirect_symbol (struct bfd_link_info *info,
+ struct elf_link_hash_entry *dir,
+ struct elf_link_hash_entry *ind)
+{
+ struct elf_xtensa_link_hash_entry *edir, *eind;
+
+ edir = elf_xtensa_hash_entry (dir);
+ eind = elf_xtensa_hash_entry (ind);
+
+ if (ind->root.type == bfd_link_hash_indirect)
+ {
+ edir->tlsfunc_refcount += eind->tlsfunc_refcount;
+ eind->tlsfunc_refcount = 0;
+
+ if (dir->got.refcount <= 0)
+ {
+ edir->tls_type = eind->tls_type;
+ eind->tls_type = GOT_UNKNOWN;
+ }
+ }
+
+ _bfd_elf_link_hash_copy_indirect (info, dir, ind);
+}
static inline bfd_boolean
-xtensa_elf_dynamic_symbol_p (struct elf_link_hash_entry *h,
+elf_xtensa_dynamic_symbol_p (struct elf_link_hash_entry *h,
struct bfd_link_info *info)
{
/* Check if we should do dynamic things to this symbol. The
bfd_boolean output_addr)
{
asection *table_section;
- char *table_section_name;
bfd_size_type table_size = 0;
bfd_byte *table_data;
property_table_entry *blocks;
int blk, block_count;
bfd_size_type num_records;
- Elf_Internal_Rela *internal_relocs;
- bfd_vma section_addr;
+ Elf_Internal_Rela *internal_relocs, *irel, *rel_end;
+ bfd_vma section_addr, off;
flagword predef_flags;
- bfd_size_type table_entry_size;
+ bfd_size_type table_entry_size, section_limit;
if (!section
|| !(section->flags & SEC_ALLOC)
return 0;
}
- table_section_name = xtensa_get_property_section_name (section, sec_name);
- table_section = bfd_get_section_by_name (abfd, table_section_name);
- free (table_section_name);
+ table_section = xtensa_get_property_section (section, sec_name);
if (table_section)
table_size = table_section->size;
else
section_addr = section->vma;
- /* If the file has not yet been relocated, process the relocations
- and sort out the table entries that apply to the specified section. */
internal_relocs = retrieve_internal_relocs (abfd, table_section, TRUE);
if (internal_relocs && !table_section->reloc_done)
{
- unsigned i;
-
- for (i = 0; i < table_section->reloc_count; i++)
- {
- Elf_Internal_Rela *rel = &internal_relocs[i];
- unsigned long r_symndx;
+ qsort (internal_relocs, table_section->reloc_count,
+ sizeof (Elf_Internal_Rela), internal_reloc_compare);
+ irel = internal_relocs;
+ }
+ else
+ irel = NULL;
- if (ELF32_R_TYPE (rel->r_info) == R_XTENSA_NONE)
- continue;
+ section_limit = bfd_get_section_limit (abfd, section);
+ rel_end = internal_relocs + table_section->reloc_count;
- BFD_ASSERT (ELF32_R_TYPE (rel->r_info) == R_XTENSA_32);
- r_symndx = ELF32_R_SYM (rel->r_info);
+ for (off = 0; off < table_size; off += table_entry_size)
+ {
+ bfd_vma address = bfd_get_32 (abfd, table_data + off);
- if (get_elf_r_symndx_section (abfd, r_symndx) == section)
- {
- bfd_vma sym_off = get_elf_r_symndx_offset (abfd, r_symndx);
- BFD_ASSERT (sym_off == 0);
- BFD_ASSERT (rel->r_addend == 0);
- blocks[block_count].address =
- (section_addr + sym_off + rel->r_addend
- + bfd_get_32 (abfd, table_data + rel->r_offset));
- blocks[block_count].size =
- bfd_get_32 (abfd, table_data + rel->r_offset + 4);
- if (predef_flags)
- blocks[block_count].flags = predef_flags;
- else
- blocks[block_count].flags =
- bfd_get_32 (abfd, table_data + rel->r_offset + 8);
- block_count++;
- }
+ /* Skip any relocations before the current offset. This should help
+ avoid confusion caused by unexpected relocations for the preceding
+ table entry. */
+ while (irel &&
+ (irel->r_offset < off
+ || (irel->r_offset == off
+ && ELF32_R_TYPE (irel->r_info) == R_XTENSA_NONE)))
+ {
+ irel += 1;
+ if (irel >= rel_end)
+ irel = 0;
}
- }
- else
- {
- /* The file has already been relocated and the addresses are
- already in the table. */
- bfd_vma off;
- bfd_size_type section_limit = bfd_get_section_limit (abfd, section);
- for (off = 0; off < table_size; off += table_entry_size)
+ if (irel && irel->r_offset == off)
{
- bfd_vma address = bfd_get_32 (abfd, table_data + off);
+ bfd_vma sym_off;
+ unsigned long r_symndx = ELF32_R_SYM (irel->r_info);
+ BFD_ASSERT (ELF32_R_TYPE (irel->r_info) == R_XTENSA_32);
- if (address >= section_addr
- && address < section_addr + section_limit)
- {
- blocks[block_count].address = address;
- blocks[block_count].size =
- bfd_get_32 (abfd, table_data + off + 4);
- if (predef_flags)
- blocks[block_count].flags = predef_flags;
- else
- blocks[block_count].flags =
- bfd_get_32 (abfd, table_data + off + 8);
- block_count++;
- }
+ if (get_elf_r_symndx_section (abfd, r_symndx) != section)
+ continue;
+
+ sym_off = get_elf_r_symndx_offset (abfd, r_symndx);
+ BFD_ASSERT (sym_off == 0);
+ address += (section_addr + sym_off + irel->r_addend);
+ }
+ else
+ {
+ if (address < section_addr
+ || address >= section_addr + section_limit)
+ continue;
}
+
+ blocks[block_count].address = address;
+ blocks[block_count].size = bfd_get_32 (abfd, table_data + off + 4);
+ if (predef_flags)
+ blocks[block_count].flags = predef_flags;
+ else
+ blocks[block_count].flags = bfd_get_32 (abfd, table_data + off + 8);
+ block_count++;
}
release_contents (table_section, table_data);
asection *sec,
const Elf_Internal_Rela *relocs)
{
+ struct elf_xtensa_link_hash_table *htab;
Elf_Internal_Shdr *symtab_hdr;
struct elf_link_hash_entry **sym_hashes;
const Elf_Internal_Rela *rel;
const Elf_Internal_Rela *rel_end;
- if (info->relocatable)
+ if (info->relocatable || (sec->flags & SEC_ALLOC) == 0)
return TRUE;
+ BFD_ASSERT (is_xtensa_elf (abfd));
+
+ htab = elf_xtensa_hash_table (info);
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
sym_hashes = elf_sym_hashes (abfd);
{
unsigned int r_type;
unsigned long r_symndx;
- struct elf_link_hash_entry *h;
+ struct elf_link_hash_entry *h = NULL;
+ struct elf_xtensa_link_hash_entry *eh;
+ int tls_type, old_tls_type;
+ bfd_boolean is_got = FALSE;
+ bfd_boolean is_plt = FALSE;
+ bfd_boolean is_tlsfunc = FALSE;
r_symndx = ELF32_R_SYM (rel->r_info);
r_type = ELF32_R_TYPE (rel->r_info);
return FALSE;
}
- if (r_symndx < symtab_hdr->sh_info)
- h = NULL;
- else
+ 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;
}
+ eh = elf_xtensa_hash_entry (h);
switch (r_type)
{
- case R_XTENSA_32:
- if (h == NULL)
- goto local_literal;
+ case R_XTENSA_TLSDESC_FN:
+ if (info->shared)
+ {
+ tls_type = GOT_TLS_GD;
+ is_got = TRUE;
+ is_tlsfunc = TRUE;
+ }
+ else
+ tls_type = GOT_TLS_IE;
+ break;
- if ((sec->flags & SEC_ALLOC) != 0)
+ case R_XTENSA_TLSDESC_ARG:
+ if (info->shared)
{
- if (h->got.refcount <= 0)
- h->got.refcount = 1;
- else
- h->got.refcount += 1;
+ tls_type = GOT_TLS_GD;
+ is_got = TRUE;
}
+ else
+ {
+ tls_type = GOT_TLS_IE;
+ if (h && elf_xtensa_hash_entry (h) != htab->tlsbase)
+ is_got = TRUE;
+ }
+ break;
+
+ case R_XTENSA_TLS_DTPOFF:
+ if (info->shared)
+ tls_type = GOT_TLS_GD;
+ else
+ tls_type = GOT_TLS_IE;
+ break;
+
+ case R_XTENSA_TLS_TPOFF:
+ tls_type = GOT_TLS_IE;
+ if (info->shared)
+ info->flags |= DF_STATIC_TLS;
+ if (info->shared || h)
+ is_got = TRUE;
+ break;
+
+ case R_XTENSA_32:
+ tls_type = GOT_NORMAL;
+ is_got = TRUE;
break;
case R_XTENSA_PLT:
- /* If this relocation is against a local symbol, then it's
- exactly the same as a normal local GOT entry. */
- if (h == NULL)
- goto local_literal;
+ tls_type = GOT_NORMAL;
+ is_plt = TRUE;
+ break;
+
+ case R_XTENSA_GNU_VTINHERIT:
+ /* This relocation describes the C++ object vtable hierarchy.
+ Reconstruct it for later use during GC. */
+ if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
+ return FALSE;
+ continue;
+
+ case R_XTENSA_GNU_VTENTRY:
+ /* This relocation describes which C++ vtable entries are actually
+ used. Record for later use during GC. */
+ BFD_ASSERT (h != NULL);
+ if (h != NULL
+ && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
+ return FALSE;
+ continue;
- if ((sec->flags & SEC_ALLOC) != 0)
+ default:
+ /* Nothing to do for any other relocations. */
+ continue;
+ }
+
+ if (h)
+ {
+ if (is_plt)
{
if (h->plt.refcount <= 0)
{
/* Keep track of the total PLT relocation count even if we
don't yet know whether the dynamic sections will be
created. */
- plt_reloc_count += 1;
+ htab->plt_reloc_count += 1;
if (elf_hash_table (info)->dynamic_sections_created)
{
- if (!add_extra_plt_sections (elf_hash_table (info)->dynobj,
- plt_reloc_count))
+ if (! add_extra_plt_sections (info, htab->plt_reloc_count))
return FALSE;
}
}
- break;
+ else if (is_got)
+ {
+ if (h->got.refcount <= 0)
+ h->got.refcount = 1;
+ else
+ h->got.refcount += 1;
+ }
+
+ if (is_tlsfunc)
+ eh->tlsfunc_refcount += 1;
- local_literal:
- if ((sec->flags & SEC_ALLOC) != 0)
+ old_tls_type = eh->tls_type;
+ }
+ else
+ {
+ /* Allocate storage the first time. */
+ if (elf_local_got_refcounts (abfd) == NULL)
{
- bfd_signed_vma *local_got_refcounts;
+ bfd_size_type size = symtab_hdr->sh_info;
+ void *mem;
- /* 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;
+ mem = bfd_zalloc (abfd, size * sizeof (bfd_signed_vma));
+ if (mem == NULL)
+ return FALSE;
+ elf_local_got_refcounts (abfd) = (bfd_signed_vma *) mem;
- size = symtab_hdr->sh_info;
- size *= sizeof (bfd_signed_vma);
- local_got_refcounts =
- (bfd_signed_vma *) bfd_zalloc (abfd, size);
- if (local_got_refcounts == NULL)
- return FALSE;
- elf_local_got_refcounts (abfd) = local_got_refcounts;
- }
- local_got_refcounts[r_symndx] += 1;
+ mem = bfd_zalloc (abfd, size);
+ if (mem == NULL)
+ return FALSE;
+ elf_xtensa_local_got_tls_type (abfd) = (char *) mem;
+
+ mem = bfd_zalloc (abfd, size * sizeof (bfd_signed_vma));
+ if (mem == NULL)
+ return FALSE;
+ elf_xtensa_local_tlsfunc_refcounts (abfd)
+ = (bfd_signed_vma *) mem;
}
- break;
- case R_XTENSA_OP0:
- case R_XTENSA_OP1:
- case R_XTENSA_OP2:
- case R_XTENSA_SLOT0_OP:
- case R_XTENSA_SLOT1_OP:
- case R_XTENSA_SLOT2_OP:
- case R_XTENSA_SLOT3_OP:
- case R_XTENSA_SLOT4_OP:
- case R_XTENSA_SLOT5_OP:
- case R_XTENSA_SLOT6_OP:
- case R_XTENSA_SLOT7_OP:
- case R_XTENSA_SLOT8_OP:
- case R_XTENSA_SLOT9_OP:
- case R_XTENSA_SLOT10_OP:
- case R_XTENSA_SLOT11_OP:
- case R_XTENSA_SLOT12_OP:
- case R_XTENSA_SLOT13_OP:
- case R_XTENSA_SLOT14_OP:
- case R_XTENSA_SLOT0_ALT:
- case R_XTENSA_SLOT1_ALT:
- case R_XTENSA_SLOT2_ALT:
- case R_XTENSA_SLOT3_ALT:
- case R_XTENSA_SLOT4_ALT:
- case R_XTENSA_SLOT5_ALT:
- case R_XTENSA_SLOT6_ALT:
- case R_XTENSA_SLOT7_ALT:
- case R_XTENSA_SLOT8_ALT:
- case R_XTENSA_SLOT9_ALT:
- case R_XTENSA_SLOT10_ALT:
- case R_XTENSA_SLOT11_ALT:
- case R_XTENSA_SLOT12_ALT:
- case R_XTENSA_SLOT13_ALT:
- case R_XTENSA_SLOT14_ALT:
- case R_XTENSA_ASM_EXPAND:
- case R_XTENSA_ASM_SIMPLIFY:
- case R_XTENSA_DIFF8:
- case R_XTENSA_DIFF16:
- case R_XTENSA_DIFF32:
- /* Nothing to do for these. */
- break;
+ /* This is a global offset table entry for a local symbol. */
+ if (is_got || is_plt)
+ elf_local_got_refcounts (abfd) [r_symndx] += 1;
- case R_XTENSA_GNU_VTINHERIT:
- /* This relocation describes the C++ object vtable hierarchy.
- Reconstruct it for later use during GC. */
- if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
- return FALSE;
- break;
+ if (is_tlsfunc)
+ elf_xtensa_local_tlsfunc_refcounts (abfd) [r_symndx] += 1;
- case R_XTENSA_GNU_VTENTRY:
- /* This relocation describes which C++ vtable entries are actually
- used. Record for later use during GC. */
- if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
- return FALSE;
- break;
+ old_tls_type = elf_xtensa_local_got_tls_type (abfd) [r_symndx];
+ }
- default:
- break;
+ if ((old_tls_type & GOT_TLS_IE) && (tls_type & GOT_TLS_IE))
+ tls_type |= old_tls_type;
+ /* If a TLS symbol is accessed using IE at least once,
+ there is no point to use a dynamic model for it. */
+ else if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
+ && ((old_tls_type & GOT_TLS_GD) == 0
+ || (tls_type & GOT_TLS_IE) == 0))
+ {
+ if ((old_tls_type & GOT_TLS_IE) && (tls_type & GOT_TLS_GD))
+ tls_type = old_tls_type;
+ else if ((old_tls_type & GOT_TLS_GD) && (tls_type & GOT_TLS_GD))
+ tls_type |= old_tls_type;
+ else
+ {
+ (*_bfd_error_handler)
+ (_("%B: `%s' accessed both as normal and thread local symbol"),
+ abfd,
+ h ? h->root.root.string : "<local>");
+ return FALSE;
+ }
+ }
+
+ if (old_tls_type != tls_type)
+ {
+ if (eh)
+ eh->tls_type = tls_type;
+ else
+ elf_xtensa_local_got_tls_type (abfd) [r_symndx] = tls_type;
}
}
static void
elf_xtensa_make_sym_local (struct bfd_link_info *info,
- struct elf_link_hash_entry *h)
+ struct elf_link_hash_entry *h)
{
if (info->shared)
{
if (h->plt.refcount > 0)
- {
- /* Will use RELATIVE relocs instead of JMP_SLOT relocs. */
- if (h->got.refcount < 0)
- h->got.refcount = 0;
- h->got.refcount += h->plt.refcount;
- h->plt.refcount = 0;
- }
+ {
+ /* For shared objects, there's no need for PLT entries for local
+ symbols (use RELATIVE relocs instead of JMP_SLOT relocs). */
+ if (h->got.refcount < 0)
+ h->got.refcount = 0;
+ h->got.refcount += h->plt.refcount;
+ h->plt.refcount = 0;
+ }
}
else
{
static void
elf_xtensa_hide_symbol (struct bfd_link_info *info,
- struct elf_link_hash_entry *h,
- bfd_boolean force_local)
+ struct elf_link_hash_entry *h,
+ bfd_boolean force_local)
{
/* For a shared link, move the plt refcount to the got refcount to leave
space for RELATIVE relocs. */
static asection *
elf_xtensa_gc_mark_hook (asection *sec,
- struct bfd_link_info *info ATTRIBUTE_UNUSED,
+ struct bfd_link_info *info,
Elf_Internal_Rela *rel,
struct elf_link_hash_entry *h,
Elf_Internal_Sym *sym)
{
- if (h)
- {
- switch (ELF32_R_TYPE (rel->r_info))
- {
- case R_XTENSA_GNU_VTINHERIT:
- case R_XTENSA_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;
+ /* Property sections are marked "KEEP" in the linker scripts, but they
+ should not cause other sections to be marked. (This approach relies
+ on elf_xtensa_discard_info to remove property table entries that
+ describe discarded sections. Alternatively, it might be more
+ efficient to avoid using "KEEP" in the linker scripts and instead use
+ the gc_mark_extra_sections hook to mark only the property sections
+ that describe marked sections. That alternative does not work well
+ with the current property table sections, which do not correspond
+ one-to-one with the sections they describe, but that should be fixed
+ someday.) */
+ if (xtensa_is_property_section (sec))
+ return NULL;
- default:
- break;
- }
- }
- }
- else
- return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
+ if (h != NULL)
+ switch (ELF32_R_TYPE (rel->r_info))
+ {
+ case R_XTENSA_GNU_VTINHERIT:
+ case R_XTENSA_GNU_VTENTRY:
+ return NULL;
+ }
- return NULL;
+ return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
}
static bfd_boolean
elf_xtensa_gc_sweep_hook (bfd *abfd,
- struct bfd_link_info *info ATTRIBUTE_UNUSED,
+ 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 elf_xtensa_link_hash_table *htab;
+
+ htab = elf_xtensa_hash_table (info);
+
+ if (info->relocatable)
+ return TRUE;
if ((sec->flags & SEC_ALLOC) == 0)
return TRUE;
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
sym_hashes = elf_sym_hashes (abfd);
- local_got_refcounts = elf_local_got_refcounts (abfd);
relend = relocs + sec->reloc_count;
for (rel = relocs; rel < relend; rel++)
unsigned long r_symndx;
unsigned int r_type;
struct elf_link_hash_entry *h = NULL;
+ struct elf_xtensa_link_hash_entry *eh;
+ bfd_boolean is_got = FALSE;
+ bfd_boolean is_plt = FALSE;
+ bfd_boolean is_tlsfunc = FALSE;
r_symndx = ELF32_R_SYM (rel->r_info);
if (r_symndx >= symtab_hdr->sh_info)
|| h->root.type == bfd_link_hash_warning)
h = (struct elf_link_hash_entry *) h->root.u.i.link;
}
+ eh = elf_xtensa_hash_entry (h);
r_type = ELF32_R_TYPE (rel->r_info);
switch (r_type)
{
- case R_XTENSA_32:
- if (h == NULL)
- goto local_literal;
- if (h->got.refcount > 0)
- h->got.refcount--;
+ case R_XTENSA_TLSDESC_FN:
+ if (info->shared)
+ {
+ is_got = TRUE;
+ is_tlsfunc = TRUE;
+ }
break;
- case R_XTENSA_PLT:
- if (h == NULL)
- goto local_literal;
- if (h->plt.refcount > 0)
- h->plt.refcount--;
+ case R_XTENSA_TLSDESC_ARG:
+ if (info->shared)
+ is_got = TRUE;
+ else
+ {
+ if (h && elf_xtensa_hash_entry (h) != htab->tlsbase)
+ is_got = TRUE;
+ }
break;
- local_literal:
- if (local_got_refcounts[r_symndx] > 0)
- local_got_refcounts[r_symndx] -= 1;
+ case R_XTENSA_TLS_TPOFF:
+ if (info->shared || h)
+ is_got = TRUE;
break;
- default:
+ case R_XTENSA_32:
+ is_got = TRUE;
+ break;
+
+ case R_XTENSA_PLT:
+ is_plt = TRUE;
break;
+
+ default:
+ continue;
+ }
+
+ if (h)
+ {
+ if (is_plt)
+ {
+ if (h->plt.refcount > 0)
+ h->plt.refcount--;
+ }
+ else if (is_got)
+ {
+ if (h->got.refcount > 0)
+ h->got.refcount--;
+ }
+ if (is_tlsfunc)
+ {
+ if (eh->tlsfunc_refcount > 0)
+ eh->tlsfunc_refcount--;
+ }
+ }
+ else
+ {
+ if (is_got || is_plt)
+ {
+ bfd_signed_vma *got_refcount
+ = &elf_local_got_refcounts (abfd) [r_symndx];
+ if (*got_refcount > 0)
+ *got_refcount -= 1;
+ }
+ if (is_tlsfunc)
+ {
+ bfd_signed_vma *tlsfunc_refcount
+ = &elf_xtensa_local_tlsfunc_refcounts (abfd) [r_symndx];
+ if (*tlsfunc_refcount > 0)
+ *tlsfunc_refcount -= 1;
+ }
}
}
static bfd_boolean
elf_xtensa_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
{
+ struct elf_xtensa_link_hash_table *htab;
flagword flags, noalloc_flags;
- asection *s;
+
+ htab = elf_xtensa_hash_table (info);
/* First do all the standard stuff. */
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, ".rela.plt");
+ htab->sgot = bfd_get_section_by_name (dynobj, ".got");
+ htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
+ htab->srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
/* Create any extra PLT sections in case check_relocs has already
been called on all the non-dynamic input files. */
- if (!add_extra_plt_sections (dynobj, plt_reloc_count))
+ if (! add_extra_plt_sections (info, htab->plt_reloc_count))
return FALSE;
noalloc_flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY
flags = noalloc_flags | SEC_ALLOC | SEC_LOAD;
/* Mark the ".got.plt" section READONLY. */
- s = bfd_get_section_by_name (dynobj, ".got.plt");
- if (s == NULL
- || ! bfd_set_section_flags (dynobj, s, flags))
- return FALSE;
-
- /* Create ".rela.got". */
- s = bfd_make_section_with_flags (dynobj, ".rela.got", flags);
- if (s == NULL
- || ! bfd_set_section_alignment (dynobj, s, 2))
+ if (htab->sgotplt == NULL
+ || ! bfd_set_section_flags (dynobj, htab->sgotplt, flags))
return FALSE;
/* Create ".got.loc" (literal tables for use by dynamic linker). */
- s = bfd_make_section_with_flags (dynobj, ".got.loc", flags);
- if (s == NULL
- || ! bfd_set_section_alignment (dynobj, s, 2))
+ htab->sgotloc = bfd_make_section_with_flags (dynobj, ".got.loc", flags);
+ if (htab->sgotloc == NULL
+ || ! bfd_set_section_alignment (dynobj, htab->sgotloc, 2))
return FALSE;
/* Create ".xt.lit.plt" (literal table for ".got.plt*"). */
- s = bfd_make_section_with_flags (dynobj, ".xt.lit.plt",
- noalloc_flags);
- if (s == NULL
- || ! bfd_set_section_alignment (dynobj, s, 2))
+ htab->spltlittbl = bfd_make_section_with_flags (dynobj, ".xt.lit.plt",
+ noalloc_flags);
+ if (htab->spltlittbl == NULL
+ || ! bfd_set_section_alignment (dynobj, htab->spltlittbl, 2))
return FALSE;
return TRUE;
static bfd_boolean
-add_extra_plt_sections (bfd *dynobj, int count)
+add_extra_plt_sections (struct bfd_link_info *info, int count)
{
+ bfd *dynobj = elf_hash_table (info)->dynobj;
int chunk;
/* Iterate over all chunks except 0 which uses the standard ".plt" and
asection *s;
/* Stop when we find a section has already been created. */
- if (elf_xtensa_get_plt_section (dynobj, chunk))
+ if (elf_xtensa_get_plt_section (info, chunk))
break;
flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
sname = (char *) bfd_malloc (10);
sprintf (sname, ".plt.%u", chunk);
- s = bfd_make_section_with_flags (dynobj, sname,
- flags | SEC_CODE);
+ s = bfd_make_section_with_flags (dynobj, sname, flags | SEC_CODE);
if (s == NULL
|| ! bfd_set_section_alignment (dynobj, s, 2))
return FALSE;
static bfd_boolean
-elf_xtensa_fix_refcounts (struct elf_link_hash_entry *h, void *arg)
+elf_xtensa_allocate_dynrelocs (struct elf_link_hash_entry *h, void *arg)
{
- struct bfd_link_info *info = (struct bfd_link_info *) arg;
-
- if (h->root.type == bfd_link_hash_warning)
- h = (struct elf_link_hash_entry *) h->root.u.i.link;
-
- if (! xtensa_elf_dynamic_symbol_p (h, info))
- elf_xtensa_make_sym_local (info, h);
+ struct bfd_link_info *info;
+ struct elf_xtensa_link_hash_table *htab;
+ struct elf_xtensa_link_hash_entry *eh = elf_xtensa_hash_entry (h);
- return TRUE;
-}
-
-
-static bfd_boolean
-elf_xtensa_allocate_plt_size (struct elf_link_hash_entry *h, void *arg)
-{
- asection *srelplt = (asection *) arg;
+ if (h->root.type == bfd_link_hash_indirect)
+ return TRUE;
if (h->root.type == bfd_link_hash_warning)
h = (struct elf_link_hash_entry *) h->root.u.i.link;
- if (h->plt.refcount > 0)
- srelplt->size += (h->plt.refcount * sizeof (Elf32_External_Rela));
-
- return TRUE;
-}
+ info = (struct bfd_link_info *) arg;
+ htab = elf_xtensa_hash_table (info);
+ /* If we saw any use of an IE model for this symbol, we can then optimize
+ away GOT entries for any TLSDESC_FN relocs. */
+ if ((eh->tls_type & GOT_TLS_IE) != 0)
+ {
+ BFD_ASSERT (h->got.refcount >= eh->tlsfunc_refcount);
+ h->got.refcount -= eh->tlsfunc_refcount;
+ }
-static bfd_boolean
-elf_xtensa_allocate_got_size (struct elf_link_hash_entry *h, void *arg)
-{
- asection *srelgot = (asection *) arg;
+ if (! elf_xtensa_dynamic_symbol_p (h, info))
+ elf_xtensa_make_sym_local (info, h);
- if (h->root.type == bfd_link_hash_warning)
- h = (struct elf_link_hash_entry *) h->root.u.i.link;
+ if (h->plt.refcount > 0)
+ htab->srelplt->size += (h->plt.refcount * sizeof (Elf32_External_Rela));
if (h->got.refcount > 0)
- srelgot->size += (h->got.refcount * sizeof (Elf32_External_Rela));
+ htab->srelgot->size += (h->got.refcount * sizeof (Elf32_External_Rela));
return TRUE;
}
static void
-elf_xtensa_allocate_local_got_size (struct bfd_link_info *info,
- asection *srelgot)
+elf_xtensa_allocate_local_got_size (struct bfd_link_info *info)
{
+ struct elf_xtensa_link_hash_table *htab;
bfd *i;
+ htab = elf_xtensa_hash_table (info);
+
for (i = info->input_bfds; i; i = i->link_next)
{
bfd_signed_vma *local_got_refcounts;
for (j = 0; j < cnt; ++j)
{
+ /* If we saw any use of an IE model for this symbol, we can
+ then optimize away GOT entries for any TLSDESC_FN relocs. */
+ if ((elf_xtensa_local_got_tls_type (i) [j] & GOT_TLS_IE) != 0)
+ {
+ bfd_signed_vma *tlsfunc_refcount
+ = &elf_xtensa_local_tlsfunc_refcounts (i) [j];
+ BFD_ASSERT (local_got_refcounts[j] >= *tlsfunc_refcount);
+ local_got_refcounts[j] -= *tlsfunc_refcount;
+ }
+
if (local_got_refcounts[j] > 0)
- srelgot->size += (local_got_refcounts[j]
- * sizeof (Elf32_External_Rela));
+ htab->srelgot->size += (local_got_refcounts[j]
+ * sizeof (Elf32_External_Rela));
}
}
}
elf_xtensa_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
struct bfd_link_info *info)
{
+ struct elf_xtensa_link_hash_table *htab;
bfd *dynobj, *abfd;
asection *s, *srelplt, *splt, *sgotplt, *srelgot, *spltlittbl, *sgotloc;
bfd_boolean relplt, relgot;
plt_entries = 0;
plt_chunks = 0;
- srelgot = 0;
+ htab = elf_xtensa_hash_table (info);
dynobj = elf_hash_table (info)->dynobj;
if (dynobj == NULL)
abort ();
+ srelgot = htab->srelgot;
+ srelplt = htab->srelplt;
if (elf_hash_table (info)->dynamic_sections_created)
{
+ BFD_ASSERT (htab->srelgot != NULL
+ && htab->srelplt != NULL
+ && htab->sgot != NULL
+ && htab->spltlittbl != NULL
+ && htab->sgotloc != NULL);
+
/* Set the contents of the .interp section to the interpreter. */
if (info->executable)
{
}
/* Allocate room for one word in ".got". */
- s = bfd_get_section_by_name (dynobj, ".got");
- if (s == NULL)
- abort ();
- s->size = 4;
+ htab->sgot->size = 4;
- /* Adjust refcounts for symbols that we now know are not "dynamic". */
+ /* Allocate space in ".rela.got" for literals that reference global
+ symbols and space in ".rela.plt" for literals that have PLT
+ entries. */
elf_link_hash_traverse (elf_hash_table (info),
- elf_xtensa_fix_refcounts,
+ elf_xtensa_allocate_dynrelocs,
(void *) info);
- /* Allocate space in ".rela.got" for literals that reference
- global symbols. */
- srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
- if (srelgot == NULL)
- abort ();
- elf_link_hash_traverse (elf_hash_table (info),
- elf_xtensa_allocate_got_size,
- (void *) srelgot);
-
/* If we are generating a shared object, we also need space in
".rela.got" for R_XTENSA_RELATIVE relocs for literals that
reference local symbols. */
if (info->shared)
- elf_xtensa_allocate_local_got_size (info, srelgot);
-
- /* Allocate space in ".rela.plt" for literals that have PLT entries. */
- srelplt = bfd_get_section_by_name (dynobj, ".rela.plt");
- if (srelplt == NULL)
- abort ();
- elf_link_hash_traverse (elf_hash_table (info),
- elf_xtensa_allocate_plt_size,
- (void *) srelplt);
+ elf_xtensa_allocate_local_got_size (info);
/* Allocate space in ".plt" to match the size of ".rela.plt". For
each PLT entry, we need the PLT code plus a 4-byte literal.
For each chunk of ".plt", we also need two more 4-byte
literals, two corresponding entries in ".rela.got", and an
8-byte entry in ".xt.lit.plt". */
- spltlittbl = bfd_get_section_by_name (dynobj, ".xt.lit.plt");
- if (spltlittbl == NULL)
- abort ();
-
+ spltlittbl = htab->spltlittbl;
plt_entries = srelplt->size / sizeof (Elf32_External_Rela);
plt_chunks =
(plt_entries + PLT_ENTRIES_PER_CHUNK - 1) / PLT_ENTRIES_PER_CHUNK;
created earlier because the initial count of PLT relocations
was an overestimate. */
for (chunk = 0;
- (splt = elf_xtensa_get_plt_section (dynobj, chunk)) != NULL;
+ (splt = elf_xtensa_get_plt_section (info, chunk)) != NULL;
chunk++)
{
int chunk_entries;
- sgotplt = elf_xtensa_get_gotplt_section (dynobj, chunk);
- if (sgotplt == NULL)
- abort ();
+ sgotplt = elf_xtensa_get_gotplt_section (info, chunk);
+ BFD_ASSERT (sgotplt != NULL);
if (chunk < plt_chunks - 1)
chunk_entries = PLT_ENTRIES_PER_CHUNK;
/* Allocate space in ".got.loc" to match the total size of all the
literal tables. */
- sgotloc = bfd_get_section_by_name (dynobj, ".got.loc");
- if (sgotloc == NULL)
- abort ();
+ sgotloc = htab->sgotloc;
sgotloc->size = spltlittbl->size;
for (abfd = info->input_bfds; abfd != NULL; abfd = abfd->link_next)
{
of the dynobj section names depend upon the input files. */
name = bfd_get_section_name (dynobj, s);
- if (strncmp (name, ".rela", 5) == 0)
+ if (CONST_STRNEQ (name, ".rela"))
{
if (s->size != 0)
{
s->reloc_count = 0;
}
}
- else if (strncmp (name, ".plt.", 5) != 0
- && strncmp (name, ".got.plt.", 9) != 0
+ else if (! CONST_STRNEQ (name, ".plt.")
+ && ! CONST_STRNEQ (name, ".got.plt.")
&& strcmp (name, ".got") != 0
&& strcmp (name, ".plt") != 0
&& strcmp (name, ".got.plt") != 0
/* Add the special XTENSA_RTLD relocations now. The offsets won't be
known until finish_dynamic_sections, but we need to get the relocs
in place before they are sorted. */
- if (srelgot == NULL)
- abort ();
for (chunk = 0; chunk < plt_chunks; chunk++)
{
Elf_Internal_Rela irela;
#define add_dynamic_entry(TAG, VAL) \
_bfd_elf_add_dynamic_entry (info, TAG, VAL)
- if (! info->shared)
+ if (info->executable)
{
if (!add_dynamic_entry (DT_DEBUG, 0))
return FALSE;
if (relplt)
{
- if (!add_dynamic_entry (DT_PLTGOT, 0)
- || !add_dynamic_entry (DT_PLTRELSZ, 0)
+ if (!add_dynamic_entry (DT_PLTRELSZ, 0)
|| !add_dynamic_entry (DT_PLTREL, DT_RELA)
|| !add_dynamic_entry (DT_JMPREL, 0))
return FALSE;
return FALSE;
}
- if (!add_dynamic_entry (DT_XTENSA_GOT_LOC_OFF, 0)
+ if (!add_dynamic_entry (DT_PLTGOT, 0)
+ || !add_dynamic_entry (DT_XTENSA_GOT_LOC_OFF, 0)
|| !add_dynamic_entry (DT_XTENSA_GOT_LOC_SZ, 0))
return FALSE;
}
return TRUE;
}
-\f
-/* Remove any PT_LOAD segments with no allocated sections. Prior to
- binutils 2.13, this function used to remove the non-SEC_ALLOC
- sections from PT_LOAD segments, but that task has now been moved
- into elf.c. We still need this function to remove any empty
- segments that result, but there's nothing Xtensa-specific about
- this and it probably ought to be moved into elf.c as well. */
-
static bfd_boolean
-elf_xtensa_modify_segment_map (bfd *abfd,
- struct bfd_link_info *info ATTRIBUTE_UNUSED)
+elf_xtensa_always_size_sections (bfd *output_bfd,
+ struct bfd_link_info *info)
{
- struct elf_segment_map **m_p;
+ struct elf_xtensa_link_hash_table *htab;
+ asection *tls_sec;
- m_p = &elf_tdata (abfd)->segment_map;
- while (*m_p)
+ htab = elf_xtensa_hash_table (info);
+ tls_sec = htab->elf.tls_sec;
+
+ if (tls_sec && (htab->tlsbase->tls_type & GOT_TLS_ANY) != 0)
{
- if ((*m_p)->p_type == PT_LOAD && (*m_p)->count == 0)
- *m_p = (*m_p)->next;
- else
- m_p = &(*m_p)->next;
+ struct elf_link_hash_entry *tlsbase = &htab->tlsbase->elf;
+ struct bfd_link_hash_entry *bh = &tlsbase->root;
+ const struct elf_backend_data *bed = get_elf_backend_data (output_bfd);
+
+ tlsbase->type = STT_TLS;
+ if (!(_bfd_generic_link_add_one_symbol
+ (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL,
+ tls_sec, 0, NULL, FALSE,
+ bed->collect, &bh)))
+ return FALSE;
+ tlsbase->def_regular = 1;
+ tlsbase->other = STV_HIDDEN;
+ (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE);
}
+
return TRUE;
}
\f
+/* 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 the specified relocation. The instruction at (contents + address)
is modified to set one operand to represent the value in "relocation". The
operand position is determined by the relocation type recorded in the
xtensa_isa isa = xtensa_default_isa;
static xtensa_insnbuf ibuff = NULL;
static xtensa_insnbuf sbuff = NULL;
- bfd_vma self_address = 0;
+ bfd_vma self_address;
bfd_size_type input_size;
int opnd, slot;
uint32 newval;
input_size = bfd_get_section_limit (abfd, input_section);
+ /* Calculate the PC address for this instruction. */
+ self_address = (input_section->output_section->vma
+ + input_section->output_offset
+ + address);
+
switch (howto->type)
{
case R_XTENSA_NONE:
case R_XTENSA_DIFF8:
case R_XTENSA_DIFF16:
case R_XTENSA_DIFF32:
+ case R_XTENSA_TLS_FUNC:
+ case R_XTENSA_TLS_ARG:
+ case R_XTENSA_TLS_CALL:
return bfd_reloc_ok;
case R_XTENSA_ASM_EXPAND:
if (!is_weak_undef)
{
/* Check for windowed CALL across a 1GB boundary. */
- xtensa_opcode opcode =
- get_expanded_call_opcode (contents + address,
- input_size - address, 0);
+ opcode = get_expanded_call_opcode (contents + address,
+ input_size - address, 0);
if (is_windowed_call_opcode (opcode))
{
- self_address = (input_section->output_section->vma
- + input_section->output_offset
- + address);
if ((self_address >> CALL_SEGMENT_BITS)
!= (relocation >> CALL_SEGMENT_BITS))
{
/* The CALL needs to be relocated. Continue below for that part. */
address += 3;
+ self_address += 3;
howto = &elf_howto_table[(unsigned) R_XTENSA_SLOT0_OP ];
}
break;
case R_XTENSA_32:
- case R_XTENSA_PLT:
{
bfd_vma x;
x = bfd_get_32 (abfd, contents + address);
bfd_put_32 (abfd, x, contents + address);
}
return bfd_reloc_ok;
+
+ case R_XTENSA_32_PCREL:
+ bfd_put_32 (abfd, relocation - self_address, contents + address);
+ return bfd_reloc_ok;
+
+ case R_XTENSA_PLT:
+ case R_XTENSA_TLSDESC_FN:
+ case R_XTENSA_TLSDESC_ARG:
+ case R_XTENSA_TLS_DTPOFF:
+ case R_XTENSA_TLS_TPOFF:
+ bfd_put_32 (abfd, relocation, contents + address);
+ return bfd_reloc_ok;
}
/* Only instruction slot-specific relocations handled below.... */
return bfd_reloc_dangerous;
}
- /* Calculate the PC address for this instruction. */
- self_address = (input_section->output_section->vma
- + input_section->output_offset
- + address);
-
newval = relocation;
}
}
|| xtensa_operand_set_field (isa, opcode, opnd, fmt, slot,
sbuff, newval))
{
- *error_message = build_encoding_error_message (opcode, relocation);
+ const char *opname = xtensa_opcode_name (isa, opcode);
+ const char *msg;
+
+ msg = "cannot encode";
+ if (is_direct_call_opcode (opcode))
+ {
+ if ((relocation & 0x3) != 0)
+ msg = "misaligned call target";
+ else
+ msg = "call target out of range";
+ }
+ else if (opcode == get_l32r_opcode ())
+ {
+ if ((relocation & 0x3) != 0)
+ msg = "misaligned literal target";
+ else if (is_alt_relocation (howto->type))
+ msg = "literal target out of range (too many literals)";
+ else if (self_address > relocation)
+ msg = "literal target out of range (try using text-section-literals)";
+ else
+ msg = "literal placed after use";
+ }
+
+ *error_message = vsprint_msg (opname, ": %s", strlen (msg) + 2, msg);
return bfd_reloc_dangerous;
}
}
-static char * ATTRIBUTE_PRINTF(2,4)
+static char *
vsprint_msg (const char *origmsg, const char *fmt, int arglen, ...)
{
/* To reduce the size of the memory leak,
len = orig_len + strlen (fmt) + arglen + 20;
if (len > alloc_size)
{
- message = (char *) bfd_realloc (message, len);
+ message = (char *) bfd_realloc_or_free (message, len);
alloc_size = len;
}
- if (!is_append)
- memcpy (message, origmsg, orig_len);
- vsprintf (message + orig_len, fmt, ap);
- VA_CLOSE (ap);
- return message;
-}
-
-
-static char *
-build_encoding_error_message (xtensa_opcode opcode, bfd_vma target_address)
-{
- const char *opname = xtensa_opcode_name (xtensa_default_isa, opcode);
- const char *msg;
-
- msg = "cannot encode";
- if (is_direct_call_opcode (opcode))
+ if (message != NULL)
{
- if ((target_address & 0x3) != 0)
- msg = "misaligned call target";
- else
- msg = "call target out of range";
+ if (!is_append)
+ memcpy (message, origmsg, orig_len);
+ vsprintf (message + orig_len, fmt, ap);
}
- else if (opcode == get_l32r_opcode ())
- {
- if ((target_address & 0x3) != 0)
- msg = "misaligned literal target";
- else
- msg = "literal target out of range";
- }
-
- return vsprint_msg (opname, ": %s", strlen (msg) + 2, msg);
+ VA_CLOSE (ap);
+ return message;
}
/* Set up an entry in the procedure linkage table. */
static bfd_vma
-elf_xtensa_create_plt_entry (bfd *dynobj,
+elf_xtensa_create_plt_entry (struct bfd_link_info *info,
bfd *output_bfd,
unsigned reloc_index)
{
int chunk;
chunk = reloc_index / PLT_ENTRIES_PER_CHUNK;
- splt = elf_xtensa_get_plt_section (dynobj, chunk);
- sgotplt = elf_xtensa_get_gotplt_section (dynobj, chunk);
+ splt = elf_xtensa_get_plt_section (info, chunk);
+ sgotplt = elf_xtensa_get_gotplt_section (info, chunk);
BFD_ASSERT (splt != NULL && sgotplt != NULL);
plt_base = splt->output_section->vma + splt->output_offset;
}
+static bfd_boolean get_indirect_call_dest_reg (xtensa_opcode, unsigned *);
+
+static bfd_boolean
+replace_tls_insn (Elf_Internal_Rela *rel,
+ bfd *abfd,
+ asection *input_section,
+ bfd_byte *contents,
+ bfd_boolean is_ld_model,
+ char **error_message)
+{
+ static xtensa_insnbuf ibuff = NULL;
+ static xtensa_insnbuf sbuff = NULL;
+ xtensa_isa isa = xtensa_default_isa;
+ xtensa_format fmt;
+ xtensa_opcode old_op, new_op;
+ bfd_size_type input_size;
+ int r_type;
+ unsigned dest_reg, src_reg;
+
+ if (ibuff == NULL)
+ {
+ ibuff = xtensa_insnbuf_alloc (isa);
+ sbuff = xtensa_insnbuf_alloc (isa);
+ }
+
+ input_size = bfd_get_section_limit (abfd, input_section);
+
+ /* Read the instruction into a buffer and decode the opcode. */
+ xtensa_insnbuf_from_chars (isa, ibuff, contents + rel->r_offset,
+ input_size - rel->r_offset);
+ fmt = xtensa_format_decode (isa, ibuff);
+ if (fmt == XTENSA_UNDEFINED)
+ {
+ *error_message = "cannot decode instruction format";
+ return FALSE;
+ }
+
+ BFD_ASSERT (xtensa_format_num_slots (isa, fmt) == 1);
+ xtensa_format_get_slot (isa, fmt, 0, ibuff, sbuff);
+
+ old_op = xtensa_opcode_decode (isa, fmt, 0, sbuff);
+ if (old_op == XTENSA_UNDEFINED)
+ {
+ *error_message = "cannot decode instruction opcode";
+ return FALSE;
+ }
+
+ r_type = ELF32_R_TYPE (rel->r_info);
+ switch (r_type)
+ {
+ case R_XTENSA_TLS_FUNC:
+ case R_XTENSA_TLS_ARG:
+ if (old_op != get_l32r_opcode ()
+ || xtensa_operand_get_field (isa, old_op, 0, fmt, 0,
+ sbuff, &dest_reg) != 0)
+ {
+ *error_message = "cannot extract L32R destination for TLS access";
+ return FALSE;
+ }
+ break;
+
+ case R_XTENSA_TLS_CALL:
+ if (! get_indirect_call_dest_reg (old_op, &dest_reg)
+ || xtensa_operand_get_field (isa, old_op, 0, fmt, 0,
+ sbuff, &src_reg) != 0)
+ {
+ *error_message = "cannot extract CALLXn operands for TLS access";
+ return FALSE;
+ }
+ break;
+
+ default:
+ abort ();
+ }
+
+ if (is_ld_model)
+ {
+ switch (r_type)
+ {
+ case R_XTENSA_TLS_FUNC:
+ case R_XTENSA_TLS_ARG:
+ /* Change the instruction to a NOP (or "OR a1, a1, a1" for older
+ versions of Xtensa). */
+ new_op = xtensa_opcode_lookup (isa, "nop");
+ if (new_op == XTENSA_UNDEFINED)
+ {
+ new_op = xtensa_opcode_lookup (isa, "or");
+ if (new_op == XTENSA_UNDEFINED
+ || xtensa_opcode_encode (isa, fmt, 0, sbuff, new_op) != 0
+ || xtensa_operand_set_field (isa, new_op, 0, fmt, 0,
+ sbuff, 1) != 0
+ || xtensa_operand_set_field (isa, new_op, 1, fmt, 0,
+ sbuff, 1) != 0
+ || xtensa_operand_set_field (isa, new_op, 2, fmt, 0,
+ sbuff, 1) != 0)
+ {
+ *error_message = "cannot encode OR for TLS access";
+ return FALSE;
+ }
+ }
+ else
+ {
+ if (xtensa_opcode_encode (isa, fmt, 0, sbuff, new_op) != 0)
+ {
+ *error_message = "cannot encode NOP for TLS access";
+ return FALSE;
+ }
+ }
+ break;
+
+ case R_XTENSA_TLS_CALL:
+ /* Read THREADPTR into the CALLX's return value register. */
+ new_op = xtensa_opcode_lookup (isa, "rur.threadptr");
+ if (new_op == XTENSA_UNDEFINED
+ || xtensa_opcode_encode (isa, fmt, 0, sbuff, new_op) != 0
+ || xtensa_operand_set_field (isa, new_op, 0, fmt, 0,
+ sbuff, dest_reg + 2) != 0)
+ {
+ *error_message = "cannot encode RUR.THREADPTR for TLS access";
+ return FALSE;
+ }
+ break;
+ }
+ }
+ else
+ {
+ switch (r_type)
+ {
+ case R_XTENSA_TLS_FUNC:
+ new_op = xtensa_opcode_lookup (isa, "rur.threadptr");
+ if (new_op == XTENSA_UNDEFINED
+ || xtensa_opcode_encode (isa, fmt, 0, sbuff, new_op) != 0
+ || xtensa_operand_set_field (isa, new_op, 0, fmt, 0,
+ sbuff, dest_reg) != 0)
+ {
+ *error_message = "cannot encode RUR.THREADPTR for TLS access";
+ return FALSE;
+ }
+ break;
+
+ case R_XTENSA_TLS_ARG:
+ /* Nothing to do. Keep the original L32R instruction. */
+ return TRUE;
+
+ case R_XTENSA_TLS_CALL:
+ /* Add the CALLX's src register (holding the THREADPTR value)
+ to the first argument register (holding the offset) and put
+ the result in the CALLX's return value register. */
+ new_op = xtensa_opcode_lookup (isa, "add");
+ if (new_op == XTENSA_UNDEFINED
+ || xtensa_opcode_encode (isa, fmt, 0, sbuff, new_op) != 0
+ || xtensa_operand_set_field (isa, new_op, 0, fmt, 0,
+ sbuff, dest_reg + 2) != 0
+ || xtensa_operand_set_field (isa, new_op, 1, fmt, 0,
+ sbuff, dest_reg + 2) != 0
+ || xtensa_operand_set_field (isa, new_op, 2, fmt, 0,
+ sbuff, src_reg) != 0)
+ {
+ *error_message = "cannot encode ADD for TLS access";
+ return FALSE;
+ }
+ break;
+ }
+ }
+
+ xtensa_format_set_slot (isa, fmt, 0, ibuff, sbuff);
+ xtensa_insnbuf_to_chars (isa, ibuff, contents + rel->r_offset,
+ input_size - rel->r_offset);
+
+ return TRUE;
+}
+
+
+#define IS_XTENSA_TLS_RELOC(R_TYPE) \
+ ((R_TYPE) == R_XTENSA_TLSDESC_FN \
+ || (R_TYPE) == R_XTENSA_TLSDESC_ARG \
+ || (R_TYPE) == R_XTENSA_TLS_DTPOFF \
+ || (R_TYPE) == R_XTENSA_TLS_TPOFF \
+ || (R_TYPE) == R_XTENSA_TLS_FUNC \
+ || (R_TYPE) == R_XTENSA_TLS_ARG \
+ || (R_TYPE) == R_XTENSA_TLS_CALL)
+
/* Relocate an Xtensa ELF section. This is invoked by the linker for
both relocatable and final links. */
Elf_Internal_Sym *local_syms,
asection **local_sections)
{
+ struct elf_xtensa_link_hash_table *htab;
Elf_Internal_Shdr *symtab_hdr;
Elf_Internal_Rela *rel;
Elf_Internal_Rela *relend;
struct elf_link_hash_entry **sym_hashes;
- asection *srelgot, *srelplt;
- bfd *dynobj;
property_table_entry *lit_table = 0;
int ltblsize = 0;
+ char *local_got_tls_types;
char *error_message = NULL;
bfd_size_type input_size;
+ int tls_type;
if (!xtensa_default_isa)
xtensa_default_isa = xtensa_isa_init (0, 0);
- dynobj = elf_hash_table (info)->dynobj;
+ BFD_ASSERT (is_xtensa_elf (input_bfd));
+
+ htab = elf_xtensa_hash_table (info);
symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
sym_hashes = elf_sym_hashes (input_bfd);
-
- srelgot = NULL;
- srelplt = NULL;
- if (dynobj)
- {
- srelgot = bfd_get_section_by_name (dynobj, ".rela.got");;
- srelplt = bfd_get_section_by_name (dynobj, ".rela.plt");
- }
+ local_got_tls_types = elf_xtensa_local_got_tls_type (input_bfd);
if (elf_hash_table (info)->dynamic_sections_created)
{
unsigned long r_symndx;
struct elf_link_hash_entry *h;
Elf_Internal_Sym *sym;
+ char sym_type;
+ const char *name;
asection *sec;
bfd_vma relocation;
bfd_reloc_status_type r;
bfd_boolean is_weak_undef;
bfd_boolean unresolved_reloc;
bfd_boolean warned;
+ bfd_boolean dynamic_symbol;
r_type = ELF32_R_TYPE (rel->r_info);
if (r_type == (int) R_XTENSA_GNU_VTINHERIT
r_symndx = ELF32_R_SYM (rel->r_info);
+ h = NULL;
+ sym = NULL;
+ sec = NULL;
+ is_weak_undef = FALSE;
+ unresolved_reloc = FALSE;
+ warned = FALSE;
+
+ if (howto->partial_inplace && !info->relocatable)
+ {
+ /* Because R_XTENSA_32 was made partial_inplace to fix some
+ problems with DWARF info in partial links, there may be
+ an addend stored in the contents. Take it out of there
+ and move it back into the addend field of the reloc. */
+ rel->r_addend += bfd_get_32 (input_bfd, contents + rel->r_offset);
+ bfd_put_32 (input_bfd, 0, contents + rel->r_offset);
+ }
+
+ 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];
+ relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
+ }
+ else
+ {
+ RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
+ r_symndx, symtab_hdr, sym_hashes,
+ h, sec, relocation,
+ unresolved_reloc, warned);
+
+ if (relocation == 0
+ && !unresolved_reloc
+ && h->root.type == bfd_link_hash_undefweak)
+ is_weak_undef = TRUE;
+
+ sym_type = h->type;
+ }
+
+ if (sec != NULL && elf_discarded_section (sec))
+ {
+ /* For relocs against symbols from removed linkonce sections,
+ or sections discarded by a linker script, we just want the
+ section contents zeroed. Avoid any special processing. */
+ _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
+ rel->r_info = 0;
+ rel->r_addend = 0;
+ continue;
+ }
+
if (info->relocatable)
{
/* This is a relocatable link.
if (!do_fix_for_relocatable_link (rel, input_bfd, input_section,
contents))
return FALSE;
- r_type = ELF32_R_TYPE (rel->r_info);
}
if (r_type == R_XTENSA_ASM_SIMPLIFY)
{
- char *error_message = NULL;
+ error_message = NULL;
/* Convert ASM_SIMPLIFY into the simpler relocation
so that they never escape a relaxing link. */
r = contract_asm_expansion (contents, input_size, rel,
/* This is a final link. */
- h = NULL;
- sym = NULL;
- sec = NULL;
- is_weak_undef = FALSE;
- unresolved_reloc = FALSE;
- warned = FALSE;
-
- if (howto->partial_inplace)
- {
- /* Because R_XTENSA_32 was made partial_inplace to fix some
- problems with DWARF info in partial links, there may be
- an addend stored in the contents. Take it out of there
- and move it back into the addend field of the reloc. */
- rel->r_addend += bfd_get_32 (input_bfd, contents + rel->r_offset);
- bfd_put_32 (input_bfd, 0, contents + rel->r_offset);
- }
-
- if (r_symndx < symtab_hdr->sh_info)
- {
- sym = local_syms + r_symndx;
- sec = local_sections[r_symndx];
- relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
- }
- else
- {
- RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
- r_symndx, symtab_hdr, sym_hashes,
- h, sec, relocation,
- unresolved_reloc, warned);
-
- if (relocation == 0
- && !unresolved_reloc
- && h->root.type == bfd_link_hash_undefweak)
- is_weak_undef = TRUE;
- }
-
if (relaxing_section)
{
/* Check if this references a section in another input file. */
do_fix_for_final_link (rel, input_bfd, input_section, contents,
&relocation);
-
- /* Update some already cached values. */
- r_type = ELF32_R_TYPE (rel->r_info);
- howto = &elf_howto_table[r_type];
}
/* Sanity check the address. */
return FALSE;
}
- /* Generate dynamic relocations. */
- if (elf_hash_table (info)->dynamic_sections_created)
+ if (h != NULL)
+ name = h->root.root.string;
+ else
{
- bfd_boolean dynamic_symbol = xtensa_elf_dynamic_symbol_p (h, info);
+ 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);
+ }
- if (dynamic_symbol && is_operand_relocation (r_type))
- {
- /* This is an error. The symbol's real value won't be known
- until runtime and it's likely to be out of range anyway. */
- const char *name = h->root.root.string;
- error_message = vsprint_msg ("invalid relocation for dynamic "
- "symbol", ": %s",
- strlen (name) + 2, name);
- if (!((*info->callbacks->reloc_dangerous)
- (info, error_message, input_bfd, input_section,
- rel->r_offset)))
- return FALSE;
- }
- else if ((r_type == R_XTENSA_32 || r_type == R_XTENSA_PLT)
- && (input_section->flags & SEC_ALLOC) != 0
- && (dynamic_symbol || info->shared))
+ if (r_symndx != 0
+ && r_type != R_XTENSA_NONE
+ && (h == NULL
+ || h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak)
+ && IS_XTENSA_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);
+ }
+
+ dynamic_symbol = elf_xtensa_dynamic_symbol_p (h, info);
+
+ tls_type = GOT_UNKNOWN;
+ if (h)
+ tls_type = elf_xtensa_hash_entry (h)->tls_type;
+ else if (local_got_tls_types)
+ tls_type = local_got_tls_types [r_symndx];
+
+ switch (r_type)
+ {
+ case R_XTENSA_32:
+ case R_XTENSA_PLT:
+ if (elf_hash_table (info)->dynamic_sections_created
+ && (input_section->flags & SEC_ALLOC) != 0
+ && (dynamic_symbol || info->shared))
{
Elf_Internal_Rela outrel;
bfd_byte *loc;
asection *srel;
if (dynamic_symbol && r_type == R_XTENSA_PLT)
- srel = srelplt;
+ srel = htab->srelplt;
else
- srel = srelgot;
+ srel = htab->srelgot;
BFD_ASSERT (srel != NULL);
contents of the literal entry to the address of
the PLT entry. */
relocation =
- elf_xtensa_create_plt_entry (dynobj, output_bfd,
+ elf_xtensa_create_plt_entry (info, output_bfd,
srel->reloc_count);
}
unresolved_reloc = FALSE;
BFD_ASSERT (sizeof (Elf32_External_Rela) * srel->reloc_count
<= srel->size);
}
+ else if (r_type == R_XTENSA_ASM_EXPAND && dynamic_symbol)
+ {
+ /* This should only happen for non-PIC code, which is not
+ supposed to be used on systems with dynamic linking.
+ Just ignore these relocations. */
+ continue;
+ }
+ break;
+
+ case R_XTENSA_TLS_TPOFF:
+ /* Switch to LE model for local symbols in an executable. */
+ if (! info->shared && ! dynamic_symbol)
+ {
+ relocation = tpoff (info, relocation);
+ break;
+ }
+ /* fall through */
+
+ case R_XTENSA_TLSDESC_FN:
+ case R_XTENSA_TLSDESC_ARG:
+ {
+ if (r_type == R_XTENSA_TLSDESC_FN)
+ {
+ if (! info->shared || (tls_type & GOT_TLS_IE) != 0)
+ r_type = R_XTENSA_NONE;
+ }
+ else if (r_type == R_XTENSA_TLSDESC_ARG)
+ {
+ if (info->shared)
+ {
+ if ((tls_type & GOT_TLS_IE) != 0)
+ r_type = R_XTENSA_TLS_TPOFF;
+ }
+ else
+ {
+ r_type = R_XTENSA_TLS_TPOFF;
+ if (! dynamic_symbol)
+ {
+ relocation = tpoff (info, relocation);
+ break;
+ }
+ }
+ }
+
+ if (r_type == R_XTENSA_NONE)
+ /* Nothing to do here; skip to the next reloc. */
+ continue;
+
+ if (! elf_hash_table (info)->dynamic_sections_created)
+ {
+ error_message =
+ _("TLS relocation invalid without dynamic sections");
+ if (!((*info->callbacks->reloc_dangerous)
+ (info, error_message, input_bfd, input_section,
+ rel->r_offset)))
+ return FALSE;
+ }
+ else
+ {
+ Elf_Internal_Rela outrel;
+ bfd_byte *loc;
+ asection *srel = htab->srelgot;
+ int indx;
+
+ outrel.r_offset = (input_section->output_section->vma
+ + input_section->output_offset
+ + rel->r_offset);
+
+ /* Complain if the relocation is in a read-only section
+ and not in a literal pool. */
+ if ((input_section->flags & SEC_READONLY) != 0
+ && ! elf_xtensa_in_literal_pool (lit_table, ltblsize,
+ outrel.r_offset))
+ {
+ error_message =
+ _("dynamic relocation in read-only section");
+ if (!((*info->callbacks->reloc_dangerous)
+ (info, error_message, input_bfd, input_section,
+ rel->r_offset)))
+ return FALSE;
+ }
+
+ indx = h && h->dynindx != -1 ? h->dynindx : 0;
+ if (indx == 0)
+ outrel.r_addend = relocation - dtpoff_base (info);
+ else
+ outrel.r_addend = 0;
+ rel->r_addend = 0;
+
+ outrel.r_info = ELF32_R_INFO (indx, r_type);
+ relocation = 0;
+ unresolved_reloc = FALSE;
+
+ BFD_ASSERT (srel);
+ loc = (srel->contents
+ + srel->reloc_count++ * sizeof (Elf32_External_Rela));
+ bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
+ BFD_ASSERT (sizeof (Elf32_External_Rela) * srel->reloc_count
+ <= srel->size);
+ }
+ }
+ break;
+
+ case R_XTENSA_TLS_DTPOFF:
+ if (! info->shared)
+ /* Switch from LD model to LE model. */
+ relocation = tpoff (info, relocation);
+ else
+ relocation -= dtpoff_base (info);
+ break;
+
+ case R_XTENSA_TLS_FUNC:
+ case R_XTENSA_TLS_ARG:
+ case R_XTENSA_TLS_CALL:
+ /* Check if optimizing to IE or LE model. */
+ if ((tls_type & GOT_TLS_IE) != 0)
+ {
+ bfd_boolean is_ld_model =
+ (h && elf_xtensa_hash_entry (h) == htab->tlsbase);
+ if (! replace_tls_insn (rel, input_bfd, input_section, contents,
+ is_ld_model, &error_message))
+ {
+ if (!((*info->callbacks->reloc_dangerous)
+ (info, error_message, input_bfd, input_section,
+ rel->r_offset)))
+ return FALSE;
+ }
+
+ if (r_type != R_XTENSA_TLS_ARG || is_ld_model)
+ {
+ /* Skip subsequent relocations on the same instruction. */
+ while (rel + 1 < relend && rel[1].r_offset == rel->r_offset)
+ rel++;
+ }
+ }
+ continue;
+
+ default:
+ if (elf_hash_table (info)->dynamic_sections_created
+ && dynamic_symbol && (is_operand_relocation (r_type)
+ || r_type == R_XTENSA_32_PCREL))
+ {
+ error_message =
+ vsprint_msg ("invalid relocation for dynamic symbol", ": %s",
+ strlen (name) + 2, name);
+ if (!((*info->callbacks->reloc_dangerous)
+ (info, error_message, input_bfd, input_section,
+ rel->r_offset)))
+ return FALSE;
+ continue;
+ }
+ break;
}
/* Dynamic relocs are not propagated for SEC_DEBUGGING sections
if (unresolved_reloc
&& !((input_section->flags & SEC_DEBUGGING) != 0
&& h->def_dynamic))
- (*_bfd_error_handler)
- (_("%B(%A+0x%lx): unresolvable relocation against symbol `%s'"),
- input_bfd,
- input_section,
- (long) rel->r_offset,
- h->root.root.string);
+ {
+ (*_bfd_error_handler)
+ (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
+ input_bfd,
+ input_section,
+ (long) rel->r_offset,
+ howto->name,
+ name);
+ return FALSE;
+ }
+
+ /* TLS optimizations may have changed r_type; update "howto". */
+ howto = &elf_howto_table[r_type];
/* There's no point in calling bfd_perform_relocation here.
Just go directly to our "special function". */
if (r != bfd_reloc_ok && !warned)
{
- const char *name;
-
BFD_ASSERT (r == bfd_reloc_dangerous || r == bfd_reloc_other);
BFD_ASSERT (error_message != NULL);
- if (h)
- name = h->root.root.string;
+ if (rel->r_addend == 0)
+ error_message = vsprint_msg (error_message, ": %s",
+ strlen (name) + 2, name);
else
- {
- name = bfd_elf_string_from_elf_section
- (input_bfd, symtab_hdr->sh_link, sym->st_name);
- if (name && *name == '\0')
- name = bfd_section_name (input_bfd, sec);
- }
- if (name)
- {
- if (rel->r_addend == 0)
- error_message = vsprint_msg (error_message, ": %s",
- strlen (name) + 2, name);
- else
- error_message = vsprint_msg (error_message, ": (%s+0x%x)",
- strlen (name) + 22,
- name, (int)rel->r_addend);
- }
+ error_message = vsprint_msg (error_message, ": (%s+0x%x)",
+ strlen (name) + 22,
+ name, (int) rel->r_addend);
if (!((*info->callbacks->reloc_dangerous)
(info, error_message, input_bfd, input_section,
struct elf_link_hash_entry *h,
Elf_Internal_Sym *sym)
{
- if (h->needs_plt
- && !h->def_regular)
+ if (h->needs_plt && !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;
}
/* 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)
+ || h == elf_hash_table (info)->hgot)
sym->st_shndx = SHN_ABS;
return TRUE;
for (n = 0; n < num; n++)
{
- bfd_boolean remove = FALSE;
+ bfd_boolean remove_entry = FALSE;
if (table[n].size == 0)
- remove = TRUE;
- else if (n > 0 &&
- (table[n-1].address + table[n-1].size == table[n].address))
+ remove_entry = TRUE;
+ else if (n > 0
+ && (table[n-1].address + table[n-1].size == table[n].address))
{
table[n-1].size += table[n].size;
- remove = TRUE;
+ remove_entry = TRUE;
}
- if (remove)
+ if (remove_entry)
{
for (m = n; m < num - 1; m++)
{
elf_xtensa_finish_dynamic_sections (bfd *output_bfd,
struct bfd_link_info *info)
{
+ struct elf_xtensa_link_hash_table *htab;
bfd *dynobj;
asection *sdyn, *srelplt, *sgot, *sxtlit, *sgotloc;
Elf32_External_Dyn *dyncon, *dynconend;
- int num_xtlit_entries;
+ int num_xtlit_entries = 0;
if (! elf_hash_table (info)->dynamic_sections_created)
return TRUE;
+ htab = elf_xtensa_hash_table (info);
dynobj = elf_hash_table (info)->dynobj;
sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
BFD_ASSERT (sdyn != NULL);
/* Set the first entry in the global offset table to the address of
the dynamic section. */
- sgot = bfd_get_section_by_name (dynobj, ".got");
+ sgot = htab->sgot;
if (sgot)
{
BFD_ASSERT (sgot->size == 4);
sgot->contents);
}
- srelplt = bfd_get_section_by_name (dynobj, ".rela.plt");
+ srelplt = htab->srelplt;
if (srelplt && srelplt->size != 0)
{
asection *sgotplt, *srelgot, *spltlittbl;
bfd_byte *loc;
unsigned rtld_reloc;
- srelgot = bfd_get_section_by_name (dynobj, ".rela.got");;
- BFD_ASSERT (srelgot != NULL);
-
- spltlittbl = bfd_get_section_by_name (dynobj, ".xt.lit.plt");
- BFD_ASSERT (spltlittbl != NULL);
+ srelgot = htab->srelgot;
+ spltlittbl = htab->spltlittbl;
+ BFD_ASSERT (srelgot != NULL && spltlittbl != NULL);
/* Find the first XTENSA_RTLD relocation. Presumably the rest
of them follow immediately after.... */
{
int chunk_entries = 0;
- sgotplt = elf_xtensa_get_gotplt_section (dynobj, chunk);
+ sgotplt = elf_xtensa_get_gotplt_section (info, chunk);
BFD_ASSERT (sgotplt != NULL);
/* Emit special RTLD relocations for the first two entries in
/* Combine adjacent literal table entries. */
BFD_ASSERT (! info->relocatable);
sxtlit = bfd_get_section_by_name (output_bfd, ".xt.lit");
- sgotloc = bfd_get_section_by_name (dynobj, ".got.loc");
- BFD_ASSERT (sxtlit && sgotloc);
- num_xtlit_entries =
- elf_xtensa_combine_prop_entries (output_bfd, sxtlit, sgotloc);
- if (num_xtlit_entries < 0)
- return FALSE;
+ sgotloc = htab->sgotloc;
+ BFD_ASSERT (sgotloc);
+ if (sxtlit)
+ {
+ num_xtlit_entries =
+ elf_xtensa_combine_prop_entries (output_bfd, sxtlit, sgotloc);
+ if (num_xtlit_entries < 0)
+ return FALSE;
+ }
dyncon = (Elf32_External_Dyn *) sdyn->contents;
dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
for (; dyncon < dynconend; dyncon++)
{
Elf_Internal_Dyn dyn;
- const char *name;
- asection *s;
bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
break;
case DT_XTENSA_GOT_LOC_OFF:
- name = ".got.loc";
- goto get_vma;
+ dyn.d_un.d_ptr = htab->sgotloc->output_section->vma;
+ break;
+
case DT_PLTGOT:
- name = ".got";
- goto get_vma;
+ dyn.d_un.d_ptr = htab->sgot->output_section->vma;
+ break;
+
case DT_JMPREL:
- name = ".rela.plt";
- get_vma:
- s = bfd_get_section_by_name (output_bfd, name);
- BFD_ASSERT (s);
- dyn.d_un.d_ptr = s->vma;
+ dyn.d_un.d_ptr = htab->srelplt->output_section->vma;
break;
case DT_PLTRELSZ:
- s = bfd_get_section_by_name (output_bfd, ".rela.plt");
- BFD_ASSERT (s);
- dyn.d_un.d_val = s->size;
+ dyn.d_un.d_val = htab->srelplt->output_section->size;
break;
case DT_RELASZ:
seems to be unresolved. Since the linker script arranges
for .rela.plt to follow all other relocation sections, we
don't have to worry about changing the DT_RELA entry. */
- s = bfd_get_section_by_name (output_bfd, ".rela.plt");
- if (s)
- dyn.d_un.d_val -= s->size;
+ if (htab->srelplt)
+ dyn.d_un.d_val -= htab->srelplt->output_section->size;
break;
}
asection *sec)
{
bfd_byte *contents;
- bfd_vma section_size;
bfd_vma offset, actual_offset;
- size_t removed_bytes = 0;
-
- section_size = sec->size;
- if (section_size == 0 || section_size % 8 != 0)
- return FALSE;
+ bfd_size_type removed_bytes = 0;
+ bfd_size_type entry_size;
if (sec->output_section
&& bfd_is_abs_section (sec->output_section))
return FALSE;
+ if (xtensa_is_proptable_section (sec))
+ entry_size = 12;
+ else
+ entry_size = 8;
+
+ if (sec->size == 0 || sec->size % entry_size != 0)
+ return FALSE;
+
contents = retrieve_contents (abfd, sec, info->keep_memory);
if (!contents)
return FALSE;
return FALSE;
}
+ /* Sort the relocations. They should already be in order when
+ relaxation is enabled, but it might not be. */
+ qsort (cookie->rels, sec->reloc_count, sizeof (Elf_Internal_Rela),
+ internal_reloc_compare);
+
cookie->rel = cookie->rels;
cookie->relend = cookie->rels + sec->reloc_count;
- for (offset = 0; offset < section_size; offset += 8)
+ for (offset = 0; offset < sec->size; offset += entry_size)
{
actual_offset = offset - removed_bytes;
if (ELF32_R_TYPE (cookie->rel->r_info) != R_XTENSA_NONE)
{
/* Shift the contents up. */
- if (offset + 8 < section_size)
+ if (offset + entry_size < sec->size)
memmove (&contents[actual_offset],
- &contents[actual_offset+8],
- section_size - offset - 8);
- removed_bytes += 8;
+ &contents[actual_offset + entry_size],
+ sec->size - offset - entry_size);
+ removed_bytes += entry_size;
}
/* Remove this relocation. */
}
/* Clear the removed bytes. */
- memset (&contents[section_size - removed_bytes], 0, removed_bytes);
+ memset (&contents[sec->size - removed_bytes], 0, removed_bytes);
pin_contents (sec, contents);
pin_internal_relocs (sec, cookie->rels);
/* Shrink size. */
- sec->size = section_size - removed_bytes;
+ if (sec->rawsize == 0)
+ sec->rawsize = sec->size;
+ sec->size -= removed_bytes;
if (xtensa_is_littable_section (sec))
{
- bfd *dynobj = elf_hash_table (info)->dynobj;
- if (dynobj)
- {
- asection *sgotloc =
- bfd_get_section_by_name (dynobj, ".got.loc");
- if (sgotloc)
- sgotloc->size -= removed_bytes;
- }
+ asection *sgotloc = elf_xtensa_hash_table (info)->sgotloc;
+ if (sgotloc)
+ sgotloc->size -= removed_bytes;
}
}
else
return xtensa_is_property_section (sec);
}
+
+static unsigned int
+elf_xtensa_action_discarded (asection *sec)
+{
+ if (strcmp (".xt_except_table", sec->name) == 0)
+ return 0;
+
+ if (strcmp (".xt_except_desc", sec->name) == 0)
+ return 0;
+
+ return _bfd_elf_default_action_discarded (sec);
+}
+
\f
/* Support for core dump NOTE sections. */
}
+static bfd_boolean
+get_indirect_call_dest_reg (xtensa_opcode opcode, unsigned *pdst)
+{
+ unsigned dst = (unsigned) -1;
+
+ init_call_opcodes ();
+ if (opcode == callx0_op)
+ dst = 0;
+ else if (opcode == callx4_op)
+ dst = 4;
+ else if (opcode == callx8_op)
+ dst = 8;
+ else if (opcode == callx12_op)
+ dst = 12;
+
+ if (dst == (unsigned) -1)
+ return FALSE;
+
+ *pdst = dst;
+ return TRUE;
+}
+
+
static xtensa_opcode
get_const16_opcode (void)
{
bfd_vma address)
{
bfd_size_type loop_len, insn_len;
- xtensa_opcode opcode =
- insn_decode_opcode (contents, content_length, offset, 0);
- BFD_ASSERT (opcode != XTENSA_UNDEFINED);
- if (opcode != XTENSA_UNDEFINED)
- return FALSE;
- BFD_ASSERT (xtensa_opcode_is_loop (xtensa_default_isa, opcode));
- if (!xtensa_opcode_is_loop (xtensa_default_isa, opcode))
- return FALSE;
+ xtensa_opcode opcode;
+ opcode = insn_decode_opcode (contents, content_length, offset, 0);
+ if (opcode == XTENSA_UNDEFINED
+ || xtensa_opcode_is_loop (xtensa_default_isa, opcode) != 1)
+ {
+ BFD_ASSERT (FALSE);
+ return FALSE;
+ }
+
loop_len = insn_decode_len (contents, content_length, offset);
- BFD_ASSERT (loop_len != 0);
- if (loop_len == 0)
- return FALSE;
-
insn_len = insn_decode_len (contents, content_length, offset + loop_len);
- BFD_ASSERT (insn_len != 0);
- if (insn_len == 0)
- return FALSE;
+ if (loop_len == 0 || insn_len == 0)
+ {
+ BFD_ASSERT (FALSE);
+ return FALSE;
+ }
return check_branch_target_aligned_address (address + loop_len, insn_len);
}
};
-/* Attempt to narrow an instruction. Return true if the narrowing is
- valid. If the do_it parameter is non-zero, then perform the action
- in-place directly into the contents. Otherwise, do not modify the
- contents. The set of valid narrowing are specified by a string table
+/* Check if an instruction can be "narrowed", i.e., changed from a standard
+ 3-byte instruction to a 2-byte "density" instruction. If it is valid,
+ return the instruction buffer holding the narrow instruction. Otherwise,
+ return 0. The set of valid narrowing are specified by a string table
but require some special case operand checks in some cases. */
-static bfd_boolean
-narrow_instruction (bfd_byte *contents,
- bfd_size_type content_length,
- bfd_size_type offset,
- bfd_boolean do_it)
+static xtensa_insnbuf
+can_narrow_instruction (xtensa_insnbuf slotbuf,
+ xtensa_format fmt,
+ xtensa_opcode opcode)
{
- xtensa_opcode opcode;
- bfd_size_type insn_len, opi;
xtensa_isa isa = xtensa_default_isa;
- xtensa_format fmt, o_fmt;
+ xtensa_format o_fmt;
+ unsigned opi;
- static xtensa_insnbuf insnbuf = NULL;
- static xtensa_insnbuf slotbuf = NULL;
static xtensa_insnbuf o_insnbuf = NULL;
static xtensa_insnbuf o_slotbuf = NULL;
- if (insnbuf == NULL)
+ if (o_insnbuf == NULL)
{
- insnbuf = xtensa_insnbuf_alloc (isa);
- slotbuf = xtensa_insnbuf_alloc (isa);
o_insnbuf = xtensa_insnbuf_alloc (isa);
o_slotbuf = xtensa_insnbuf_alloc (isa);
}
- BFD_ASSERT (offset < content_length);
-
- if (content_length < 2)
- return FALSE;
-
- /* We will hand-code a few of these for a little while.
- These have all been specified in the assembler aleady. */
- xtensa_insnbuf_from_chars (isa, insnbuf, &contents[offset],
- content_length - offset);
- fmt = xtensa_format_decode (isa, insnbuf);
- if (xtensa_format_num_slots (isa, fmt) != 1)
- return FALSE;
-
- if (xtensa_format_get_slot (isa, fmt, 0, insnbuf, slotbuf) != 0)
- return FALSE;
-
- opcode = xtensa_opcode_decode (isa, fmt, 0, slotbuf);
- if (opcode == XTENSA_UNDEFINED)
- return FALSE;
- insn_len = xtensa_format_length (isa, fmt);
- if (insn_len > content_length)
- return FALSE;
-
- for (opi = 0; opi < (sizeof (narrowable)/sizeof (struct string_pair)); ++opi)
+ for (opi = 0; opi < (sizeof (narrowable)/sizeof (struct string_pair)); opi++)
{
bfd_boolean is_or = (strcmp ("or", narrowable[opi].wide) == 0);
o_opcode = xtensa_opcode_lookup (isa, narrowable[opi].narrow);
if (o_opcode == XTENSA_UNDEFINED)
- return FALSE;
+ return 0;
o_fmt = get_single_format (o_opcode);
if (o_fmt == XTENSA_UNDEFINED)
- return FALSE;
+ return 0;
if (xtensa_format_length (isa, fmt) != 3
|| xtensa_format_length (isa, o_fmt) != 2)
- return FALSE;
+ return 0;
xtensa_format_encode (isa, o_fmt, o_insnbuf);
operand_count = xtensa_opcode_num_operands (isa, opcode);
o_operand_count = xtensa_opcode_num_operands (isa, o_opcode);
if (xtensa_opcode_encode (isa, o_fmt, 0, o_slotbuf, o_opcode) != 0)
- return FALSE;
+ return 0;
if (!is_or)
{
if (xtensa_opcode_num_operands (isa, o_opcode) != operand_count)
- return FALSE;
- }
- else
- {
- uint32 rawval0, rawval1, rawval2;
-
- if (o_operand_count + 1 != operand_count)
- return FALSE;
- if (xtensa_operand_get_field (isa, opcode, 0,
- fmt, 0, slotbuf, &rawval0) != 0)
- return FALSE;
- if (xtensa_operand_get_field (isa, opcode, 1,
- fmt, 0, slotbuf, &rawval1) != 0)
- return FALSE;
- if (xtensa_operand_get_field (isa, opcode, 2,
- fmt, 0, slotbuf, &rawval2) != 0)
- return FALSE;
+ return 0;
+ }
+ else
+ {
+ uint32 rawval0, rawval1, rawval2;
- if (rawval1 != rawval2)
- return FALSE;
- if (rawval0 == rawval1) /* it is a nop */
- return FALSE;
+ if (o_operand_count + 1 != operand_count
+ || xtensa_operand_get_field (isa, opcode, 0,
+ fmt, 0, slotbuf, &rawval0) != 0
+ || xtensa_operand_get_field (isa, opcode, 1,
+ fmt, 0, slotbuf, &rawval1) != 0
+ || xtensa_operand_get_field (isa, opcode, 2,
+ fmt, 0, slotbuf, &rawval2) != 0
+ || rawval1 != rawval2
+ || rawval0 == rawval1 /* it is a nop */)
+ return 0;
}
for (i = 0; i < o_operand_count; ++i)
if (xtensa_operand_get_field (isa, opcode, i, fmt, 0,
slotbuf, &value)
|| xtensa_operand_decode (isa, opcode, i, &value))
- return FALSE;
+ return 0;
/* PC-relative branches need adjustment, but
the PC-rel operand will always have a relocation. */
|| xtensa_operand_encode (isa, o_opcode, i, &newval)
|| xtensa_operand_set_field (isa, o_opcode, i, o_fmt, 0,
o_slotbuf, newval))
- return FALSE;
+ return 0;
}
- if (xtensa_format_set_slot (isa, o_fmt, 0,
- o_insnbuf, o_slotbuf) != 0)
- return FALSE;
+ if (xtensa_format_set_slot (isa, o_fmt, 0, o_insnbuf, o_slotbuf))
+ return 0;
- if (do_it)
- xtensa_insnbuf_to_chars (isa, o_insnbuf, contents + offset,
- content_length - offset);
- return TRUE;
+ return o_insnbuf;
}
}
- return FALSE;
+ return 0;
}
-/* Attempt to widen an instruction. Return true if the widening is
- valid. If the do_it parameter is non-zero, then the action should
- be performed inplace into the contents. Otherwise, do not modify
- the contents. The set of valid widenings are specified by a string
- table but require some special case operand checks in some
- cases. */
+/* Attempt to narrow an instruction. If the narrowing is valid, perform
+ the action in-place directly into the contents and return TRUE. Otherwise,
+ the return value is FALSE and the contents are not modified. */
static bfd_boolean
-widen_instruction (bfd_byte *contents,
- bfd_size_type content_length,
- bfd_size_type offset,
- bfd_boolean do_it)
+narrow_instruction (bfd_byte *contents,
+ bfd_size_type content_length,
+ bfd_size_type offset)
{
xtensa_opcode opcode;
- bfd_size_type insn_len, opi;
+ bfd_size_type insn_len;
xtensa_isa isa = xtensa_default_isa;
- xtensa_format fmt, o_fmt;
+ xtensa_format fmt;
+ xtensa_insnbuf o_insnbuf;
static xtensa_insnbuf insnbuf = NULL;
static xtensa_insnbuf slotbuf = NULL;
- static xtensa_insnbuf o_insnbuf = NULL;
- static xtensa_insnbuf o_slotbuf = NULL;
if (insnbuf == NULL)
{
insnbuf = xtensa_insnbuf_alloc (isa);
slotbuf = xtensa_insnbuf_alloc (isa);
- o_insnbuf = xtensa_insnbuf_alloc (isa);
- o_slotbuf = xtensa_insnbuf_alloc (isa);
}
BFD_ASSERT (offset < content_length);
if (content_length < 2)
return FALSE;
- /* We will hand code a few of these for a little while.
+ /* We will hand-code a few of these for a little while.
These have all been specified in the assembler aleady. */
xtensa_insnbuf_from_chars (isa, insnbuf, &contents[offset],
content_length - offset);
if (insn_len > content_length)
return FALSE;
- for (opi = 0; opi < (sizeof (widenable)/sizeof (struct string_pair)); ++opi)
+ o_insnbuf = can_narrow_instruction (slotbuf, fmt, opcode);
+ if (o_insnbuf)
+ {
+ xtensa_insnbuf_to_chars (isa, o_insnbuf, contents + offset,
+ content_length - offset);
+ return TRUE;
+ }
+
+ return FALSE;
+}
+
+
+/* Check if an instruction can be "widened", i.e., changed from a 2-byte
+ "density" instruction to a standard 3-byte instruction. If it is valid,
+ return the instruction buffer holding the wide instruction. Otherwise,
+ return 0. The set of valid widenings are specified by a string table
+ but require some special case operand checks in some cases. */
+
+static xtensa_insnbuf
+can_widen_instruction (xtensa_insnbuf slotbuf,
+ xtensa_format fmt,
+ xtensa_opcode opcode)
+{
+ xtensa_isa isa = xtensa_default_isa;
+ xtensa_format o_fmt;
+ unsigned opi;
+
+ static xtensa_insnbuf o_insnbuf = NULL;
+ static xtensa_insnbuf o_slotbuf = NULL;
+
+ if (o_insnbuf == NULL)
+ {
+ o_insnbuf = xtensa_insnbuf_alloc (isa);
+ o_slotbuf = xtensa_insnbuf_alloc (isa);
+ }
+
+ for (opi = 0; opi < (sizeof (widenable)/sizeof (struct string_pair)); opi++)
{
bfd_boolean is_or = (strcmp ("or", widenable[opi].wide) == 0);
bfd_boolean is_branch = (strcmp ("beqz", widenable[opi].wide) == 0
o_opcode = xtensa_opcode_lookup (isa, widenable[opi].wide);
if (o_opcode == XTENSA_UNDEFINED)
- return FALSE;
+ return 0;
o_fmt = get_single_format (o_opcode);
if (o_fmt == XTENSA_UNDEFINED)
- return FALSE;
+ return 0;
if (xtensa_format_length (isa, fmt) != 2
|| xtensa_format_length (isa, o_fmt) != 3)
- return FALSE;
+ return 0;
xtensa_format_encode (isa, o_fmt, o_insnbuf);
operand_count = xtensa_opcode_num_operands (isa, opcode);
check_operand_count = o_operand_count;
if (xtensa_opcode_encode (isa, o_fmt, 0, o_slotbuf, o_opcode) != 0)
- return FALSE;
+ return 0;
if (!is_or)
{
if (xtensa_opcode_num_operands (isa, o_opcode) != operand_count)
- return FALSE;
+ return 0;
}
else
{
uint32 rawval0, rawval1;
- if (o_operand_count != operand_count + 1)
- return FALSE;
- if (xtensa_operand_get_field (isa, opcode, 0,
- fmt, 0, slotbuf, &rawval0) != 0)
- return FALSE;
- if (xtensa_operand_get_field (isa, opcode, 1,
- fmt, 0, slotbuf, &rawval1) != 0)
- return FALSE;
- if (rawval0 == rawval1) /* it is a nop */
- return FALSE;
+ if (o_operand_count != operand_count + 1
+ || xtensa_operand_get_field (isa, opcode, 0,
+ fmt, 0, slotbuf, &rawval0) != 0
+ || xtensa_operand_get_field (isa, opcode, 1,
+ fmt, 0, slotbuf, &rawval1) != 0
+ || rawval0 == rawval1 /* it is a nop */)
+ return 0;
}
if (is_branch)
check_operand_count--;
- for (i = 0; i < check_operand_count; ++i)
+ for (i = 0; i < check_operand_count; i++)
{
int new_i = i;
if (is_or && i == o_operand_count - 1)
if (xtensa_operand_get_field (isa, opcode, new_i, fmt, 0,
slotbuf, &value)
|| xtensa_operand_decode (isa, opcode, new_i, &value))
- return FALSE;
+ return 0;
/* PC-relative branches need adjustment, but
the PC-rel operand will always have a relocation. */
|| xtensa_operand_encode (isa, o_opcode, i, &newval)
|| xtensa_operand_set_field (isa, o_opcode, i, o_fmt, 0,
o_slotbuf, newval))
- return FALSE;
+ return 0;
}
if (xtensa_format_set_slot (isa, o_fmt, 0, o_insnbuf, o_slotbuf))
- return FALSE;
+ return 0;
- if (do_it)
- xtensa_insnbuf_to_chars (isa, o_insnbuf, contents + offset,
- content_length - offset);
- return TRUE;
+ return o_insnbuf;
}
}
+ return 0;
+}
+
+
+/* Attempt to widen an instruction. If the widening is valid, perform
+ the action in-place directly into the contents and return TRUE. Otherwise,
+ the return value is FALSE and the contents are not modified. */
+
+static bfd_boolean
+widen_instruction (bfd_byte *contents,
+ bfd_size_type content_length,
+ bfd_size_type offset)
+{
+ xtensa_opcode opcode;
+ bfd_size_type insn_len;
+ xtensa_isa isa = xtensa_default_isa;
+ xtensa_format fmt;
+ xtensa_insnbuf o_insnbuf;
+
+ static xtensa_insnbuf insnbuf = NULL;
+ static xtensa_insnbuf slotbuf = NULL;
+
+ if (insnbuf == NULL)
+ {
+ insnbuf = xtensa_insnbuf_alloc (isa);
+ slotbuf = xtensa_insnbuf_alloc (isa);
+ }
+
+ BFD_ASSERT (offset < content_length);
+
+ if (content_length < 2)
+ return FALSE;
+
+ /* We will hand-code a few of these for a little while.
+ These have all been specified in the assembler aleady. */
+ xtensa_insnbuf_from_chars (isa, insnbuf, &contents[offset],
+ content_length - offset);
+ fmt = xtensa_format_decode (isa, insnbuf);
+ if (xtensa_format_num_slots (isa, fmt) != 1)
+ return FALSE;
+
+ if (xtensa_format_get_slot (isa, fmt, 0, insnbuf, slotbuf) != 0)
+ return FALSE;
+
+ opcode = xtensa_opcode_decode (isa, fmt, 0, slotbuf);
+ if (opcode == XTENSA_UNDEFINED)
+ return FALSE;
+ insn_len = xtensa_format_length (isa, fmt);
+ if (insn_len > content_length)
+ return FALSE;
+
+ o_insnbuf = can_widen_instruction (slotbuf, fmt, opcode);
+ if (o_insnbuf)
+ {
+ xtensa_insnbuf_to_chars (isa, o_insnbuf, contents + offset,
+ content_length - offset);
+ return TRUE;
+ }
return FALSE;
}
for (m_p = &l->head; *m_p && (*m_p)->offset <= offset; m_p = &(*m_p)->next)
{
text_action *t = *m_p;
- /* When the action is another fill at the same address,
- just increase the size. */
- if (t->offset == offset && t->action == ta_fill && action == ta_fill)
+
+ if (action == ta_fill)
{
- t->removed_bytes += removed;
- return;
+ /* When the action is another fill at the same address,
+ just increase the size. */
+ if (t->offset == offset && t->action == ta_fill)
+ {
+ t->removed_bytes += removed;
+ return;
+ }
+ /* Fills need to happen before widens so that we don't
+ insert fill bytes into the instruction stream. */
+ if (t->offset == offset && t->action == ta_widen_insn)
+ break;
}
}
}
-static bfd_vma
-offset_with_removed_text (text_action_list *action_list, bfd_vma offset)
+/* Find the total offset adjustment for the relaxations specified by
+ text_actions, beginning from a particular starting action. This is
+ typically used from offset_with_removed_text to search an entire list of
+ actions, but it may also be called directly when adjusting adjacent offsets
+ so that each search may begin where the previous one left off. */
+
+static int
+removed_by_actions (text_action **p_start_action,
+ bfd_vma offset,
+ bfd_boolean before_fill)
{
text_action *r;
int removed = 0;
- for (r = action_list->head; r && r->offset <= offset; r = r->next)
+ r = *p_start_action;
+ while (r)
{
- if (r->offset < offset
- || (r->action == ta_fill && r->removed_bytes < 0))
- removed += r->removed_bytes;
+ if (r->offset > offset)
+ break;
+
+ if (r->offset == offset
+ && (before_fill || r->action != ta_fill || r->removed_bytes >= 0))
+ break;
+
+ removed += r->removed_bytes;
+
+ r = r->next;
}
- return (offset - removed);
+ *p_start_action = r;
+ return removed;
}
-static bfd_vma
-offset_with_removed_text_before_fill (text_action_list *action_list,
- bfd_vma offset)
+static bfd_vma
+offset_with_removed_text (text_action_list *action_list, bfd_vma offset)
{
- text_action *r;
- int removed = 0;
+ text_action *r = action_list->head;
+ return offset - removed_by_actions (&r, offset, FALSE);
+}
- for (r = action_list->head; r && r->offset < offset; r = r->next)
- removed += r->removed_bytes;
- return (offset - removed);
+static unsigned
+action_list_count (text_action_list *action_list)
+{
+ text_action *r = action_list->head;
+ unsigned count = 0;
+ for (r = action_list->head; r != NULL; r = r->next)
+ {
+ count++;
+ }
+ return count;
}
case ta_remove_longcall:
t = "remove_longcall"; break;
case ta_convert_longcall:
- t = "remove_longcall"; break;
+ t = "convert_longcall"; break;
case ta_narrow_insn:
t = "narrow_insn"; break;
case ta_widen_insn:
static bfd_boolean
elf_xtensa_new_section_hook (bfd *abfd, asection *sec)
{
- struct elf_xtensa_section_data *sdata;
- bfd_size_type amt = sizeof (*sdata);
+ if (!sec->used_by_bfd)
+ {
+ struct elf_xtensa_section_data *sdata;
+ bfd_size_type amt = sizeof (*sdata);
- sdata = (struct elf_xtensa_section_data *) bfd_zalloc (abfd, amt);
- if (sdata == NULL)
- return FALSE;
- sec->used_by_bfd = (void *) sdata;
+ sdata = bfd_zalloc (abfd, amt);
+ if (sdata == NULL)
+ return FALSE;
+ sec->used_by_bfd = sdata;
+ }
return _bfd_elf_new_section_hook (abfd, sec);
}
bfd_vma src_offset;
unsigned src_type; /* Relocation type. */
- bfd *target_abfd;
asection *target_sec;
bfd_vma target_offset;
bfd_boolean translated;
reloc_bfd_fix_init (asection *src_sec,
bfd_vma src_offset,
unsigned src_type,
- bfd *target_abfd,
asection *target_sec,
bfd_vma target_offset,
bfd_boolean translated)
fix->src_sec = src_sec;
fix->src_offset = src_offset;
fix->src_type = src_type;
- fix->target_abfd = target_abfd;
fix->target_sec = target_sec;
fix->target_offset = target_offset;
fix->translated = translated;
new_entry = &ebb->ptbl[ebb->end_ptbl_idx + 1];
if (((new_entry->flags & XTENSA_PROP_INSN) == 0)
- || ((new_entry->flags & XTENSA_PROP_INSN_NO_TRANSFORM) != 0)
+ || ((new_entry->flags & XTENSA_PROP_NO_TRANSFORM) != 0)
|| ((the_entry->flags & XTENSA_PROP_ALIGN) != 0))
break;
new_entry = &ebb->ptbl[ebb->start_ptbl_idx - 1];
if ((new_entry->flags & XTENSA_PROP_INSN) == 0
- || ((new_entry->flags & XTENSA_PROP_INSN_NO_TRANSFORM) != 0)
+ || ((new_entry->flags & XTENSA_PROP_NO_TRANSFORM) != 0)
|| ((new_entry->flags & XTENSA_PROP_ALIGN) != 0))
return TRUE;
if (new_entry->address + new_entry->size != the_entry->address)
static bfd_boolean compute_ebb_proposed_actions (ebb_constraint *);
static bfd_boolean compute_ebb_actions (ebb_constraint *);
static bfd_boolean check_section_ebb_pcrels_fit
- (bfd *, asection *, bfd_byte *, Elf_Internal_Rela *, const ebb_constraint *);
+ (bfd *, asection *, bfd_byte *, Elf_Internal_Rela *, const ebb_constraint *,
+ const xtensa_opcode *);
static bfd_boolean check_section_ebb_reduces (const ebb_constraint *);
static void text_action_add_proposed
(text_action_list *, const ebb_constraint *, asection *);
static Elf_Internal_Rela *get_irel_at_offset
(asection *, Elf_Internal_Rela *, bfd_vma);
static bfd_boolean is_removable_literal
- (const source_reloc *, int, const source_reloc *, int);
+ (const source_reloc *, int, const source_reloc *, int, asection *,
+ property_table_entry *, int);
static bfd_boolean remove_dead_literal
(bfd *, asection *, struct bfd_link_info *, Elf_Internal_Rela *,
Elf_Internal_Rela *, source_reloc *, property_table_entry *, int);
static bfd_boolean relax_section (bfd *, asection *, struct bfd_link_info *);
static bfd_boolean translate_section_fixes (asection *);
static bfd_boolean translate_reloc_bfd_fix (reloc_bfd_fix *);
-static void translate_reloc (const r_reloc *, r_reloc *);
+static asection *translate_reloc (const r_reloc *, r_reloc *, asection *);
static void shrink_dynamic_reloc_sections
(struct bfd_link_info *, bfd *, asection *, Elf_Internal_Rela *);
static bfd_boolean move_literal
relax_info->src_relocs = (source_reloc *)
bfd_malloc (relax_info->src_count * sizeof (source_reloc));
}
+ else
+ relax_info->src_count = 0;
}
/* Collect info on relocations against each relaxable section. */
bfd_boolean ok = TRUE;
unsigned i;
xtensa_relax_info *source_relax_info;
+ bfd_boolean is_l32r_reloc;
internal_relocs = retrieve_internal_relocs (abfd, sec,
link_info->keep_memory);
/* Count PC-relative operand relocations against the target section.
Note: The conditions tested here must match the conditions under
which init_source_reloc is called in collect_source_relocs(). */
- if (is_operand_relocation (ELF32_R_TYPE (irel->r_info))
- && (!is_alt_relocation (ELF32_R_TYPE (irel->r_info))
- || is_l32r_relocation (abfd, sec, contents, irel)))
- target_relax_info->src_count++;
+ is_l32r_reloc = FALSE;
+ if (is_operand_relocation (ELF32_R_TYPE (irel->r_info)))
+ {
+ xtensa_opcode opcode =
+ get_relocation_opcode (abfd, sec, contents, irel);
+ if (opcode != XTENSA_UNDEFINED)
+ {
+ is_l32r_reloc = (opcode == get_l32r_opcode ());
+ if (!is_alt_relocation (ELF32_R_TYPE (irel->r_info))
+ || is_l32r_reloc)
+ target_relax_info->src_count++;
+ }
+ }
- if (is_l32r_relocation (abfd, sec, contents, irel)
- && r_reloc_is_defined (&r_rel))
+ if (is_l32r_reloc && r_reloc_is_defined (&r_rel))
{
/* Mark the target section as relaxable. */
target_relax_info->is_relaxable_literal_section = TRUE;
}
+static xtensa_opcode *
+build_reloc_opcodes (bfd *abfd,
+ asection *sec,
+ bfd_byte *contents,
+ Elf_Internal_Rela *internal_relocs)
+{
+ unsigned i;
+ xtensa_opcode *reloc_opcodes =
+ (xtensa_opcode *) bfd_malloc (sizeof (xtensa_opcode) * sec->reloc_count);
+ for (i = 0; i < sec->reloc_count; i++)
+ {
+ Elf_Internal_Rela *irel = &internal_relocs[i];
+ reloc_opcodes[i] = get_relocation_opcode (abfd, sec, contents, irel);
+ }
+ return reloc_opcodes;
+}
+
+
/* The compute_text_actions function will build a list of potential
transformation actions for code in the extended basic block of each
longcall that is optimized to a direct call. From this list we
asection *sec,
struct bfd_link_info *link_info)
{
+ xtensa_opcode *reloc_opcodes = NULL;
xtensa_relax_info *relax_info;
bfd_byte *contents;
Elf_Internal_Rela *internal_relocs;
property_table_entry *prop_table = 0;
int ptblsize = 0;
bfd_size_type sec_size;
- static bfd_boolean no_insn_move = FALSE;
-
- if (no_insn_move)
- return ok;
- /* Do nothing if the section contains no optimized longcalls. */
relax_info = get_xtensa_relax_info (sec);
BFD_ASSERT (relax_info);
+ BFD_ASSERT (relax_info->src_next == relax_info->src_count);
+
+ /* Do nothing if the section contains no optimized longcalls. */
if (!relax_info->is_relaxable_asm_section)
return ok;
the_entry++;
}
- if (the_entry->flags & XTENSA_PROP_INSN_NO_TRANSFORM)
+ if (the_entry->flags & XTENSA_PROP_NO_TRANSFORM)
/* NO_REORDER is OK */
continue;
ebb->start_reloc_idx = i;
ebb->end_reloc_idx = i;
+ /* Precompute the opcode for each relocation. */
+ if (reloc_opcodes == NULL)
+ reloc_opcodes = build_reloc_opcodes (abfd, sec, contents,
+ internal_relocs);
+
if (!extend_ebb_bounds (ebb)
|| !compute_ebb_proposed_actions (&ebb_table)
|| !compute_ebb_actions (&ebb_table)
|| !check_section_ebb_pcrels_fit (abfd, sec, contents,
- internal_relocs, &ebb_table)
+ internal_relocs, &ebb_table,
+ reloc_opcodes)
|| !check_section_ebb_reduces (&ebb_table))
{
/* If anything goes wrong or we get unlucky and something does
release_internal_relocs (sec, internal_relocs);
if (prop_table)
free (prop_table);
+ if (reloc_opcodes)
+ free (reloc_opcodes);
return ok;
}
+/* Do not widen an instruction if it is preceeded by a
+ loop opcode. It might cause misalignment. */
+
+static bfd_boolean
+prev_instr_is_a_loop (bfd_byte *contents,
+ bfd_size_type content_length,
+ bfd_size_type offset)
+{
+ xtensa_opcode prev_opcode;
+
+ if (offset < 3)
+ return FALSE;
+ prev_opcode = insn_decode_opcode (contents, content_length, offset-3, 0);
+ return (xtensa_opcode_is_loop (xtensa_default_isa, prev_opcode) == 1);
+}
+
+
/* Find all of the possible actions for an extended basic block. */
bfd_boolean
const ebb_t *ebb = &ebb_table->ebb;
unsigned rel_idx = ebb->start_reloc_idx;
property_table_entry *entry, *start_entry, *end_entry;
+ bfd_vma offset = 0;
+ xtensa_isa isa = xtensa_default_isa;
+ xtensa_format fmt;
+ static xtensa_insnbuf insnbuf = NULL;
+ static xtensa_insnbuf slotbuf = NULL;
+
+ if (insnbuf == NULL)
+ {
+ insnbuf = xtensa_insnbuf_alloc (isa);
+ slotbuf = xtensa_insnbuf_alloc (isa);
+ }
start_entry = &ebb->ptbl[ebb->start_ptbl_idx];
end_entry = &ebb->ptbl[ebb->end_ptbl_idx];
for (entry = start_entry; entry <= end_entry; entry++)
{
- bfd_vma offset, start_offset, end_offset;
+ bfd_vma start_offset, end_offset;
bfd_size_type insn_len;
start_offset = entry->address - ebb->sec->vma;
insn_len = insn_decode_len (ebb->contents, ebb->content_length,
offset);
-
- /* Propose no actions for a section with an undecodable offset. */
if (insn_len == 0)
- {
- (*_bfd_error_handler)
- (_("%B(%A+0x%lx): could not decode instruction; possible configuration mismatch"),
- ebb->sec->owner, ebb->sec, offset);
- return FALSE;
- }
+ goto decode_error;
+
if (check_branch_target_aligned_address (offset, insn_len))
align_type = EBB_REQUIRE_TGT_ALIGN;
ebb->content_length,
irel->r_offset);
if (simplify_size == 0)
- {
- (*_bfd_error_handler)
- (_("%B(%A+0x%lx): could not decode instruction for XTENSA_ASM_SIMPLIFY relocation; possible configuration mismatch"),
- ebb->sec->owner, ebb->sec, offset);
- return FALSE;
- }
+ goto decode_error;
ebb_propose_action (ebb_table, EBB_NO_ALIGN, 0,
ta_convert_longcall, offset, 0, TRUE);
continue;
}
- insn_len = insn_decode_len (ebb->contents, ebb->content_length,
- offset);
- /* If the instruction is undecodable, then report an error. */
- if (insn_len == 0)
+ if (offset + MIN_INSN_LENGTH > ebb->content_length)
+ goto decode_error;
+ xtensa_insnbuf_from_chars (isa, insnbuf, &ebb->contents[offset],
+ ebb->content_length - offset);
+ fmt = xtensa_format_decode (isa, insnbuf);
+ if (fmt == XTENSA_UNDEFINED)
+ goto decode_error;
+ insn_len = xtensa_format_length (isa, fmt);
+ if (insn_len == (bfd_size_type) XTENSA_UNDEFINED)
+ goto decode_error;
+
+ if (xtensa_format_num_slots (isa, fmt) != 1)
{
- (*_bfd_error_handler)
- (_("%B(%A+0x%lx): could not decode instruction; possible configuration mismatch"),
- ebb->sec->owner, ebb->sec, offset);
- return FALSE;
+ offset += insn_len;
+ continue;
}
-
+
+ xtensa_format_get_slot (isa, fmt, 0, insnbuf, slotbuf);
+ opcode = xtensa_opcode_decode (isa, fmt, 0, slotbuf);
+ if (opcode == XTENSA_UNDEFINED)
+ goto decode_error;
+
if ((entry->flags & XTENSA_PROP_INSN_NO_DENSITY) == 0
- && (entry->flags & XTENSA_PROP_INSN_NO_TRANSFORM) == 0
- && narrow_instruction (ebb->contents, ebb->content_length,
- offset, FALSE))
+ && (entry->flags & XTENSA_PROP_NO_TRANSFORM) == 0
+ && can_narrow_instruction (slotbuf, fmt, opcode) != 0)
{
/* Add an instruction narrow action. */
ebb_propose_action (ebb_table, EBB_NO_ALIGN, 0,
ta_narrow_insn, offset, 0, FALSE);
- offset += insn_len;
- continue;
}
- if ((entry->flags & XTENSA_PROP_INSN_NO_TRANSFORM) == 0
- && widen_instruction (ebb->contents, ebb->content_length,
- offset, FALSE))
+ else if ((entry->flags & XTENSA_PROP_NO_TRANSFORM) == 0
+ && can_widen_instruction (slotbuf, fmt, opcode) != 0
+ && ! prev_instr_is_a_loop (ebb->contents,
+ ebb->content_length, offset))
{
/* Add an instruction widen action. */
ebb_propose_action (ebb_table, EBB_NO_ALIGN, 0,
ta_widen_insn, offset, 0, FALSE);
- offset += insn_len;
- continue;
}
- opcode = insn_decode_opcode (ebb->contents, ebb->content_length,
- offset, 0);
- if (xtensa_opcode_is_loop (xtensa_default_isa, opcode))
+ else if (xtensa_opcode_is_loop (xtensa_default_isa, opcode) == 1)
{
/* Check for branch targets. */
ebb_propose_action (ebb_table, EBB_REQUIRE_LOOP_ALIGN, 0,
ta_none, offset, 0, TRUE);
- offset += insn_len;
- continue;
}
offset += insn_len;
}
return TRUE;
+
+ decode_error:
+ (*_bfd_error_handler)
+ (_("%B(%A+0x%lx): could not decode instruction; possible configuration mismatch"),
+ ebb->sec->owner, ebb->sec, offset);
+ return FALSE;
}
bad_alignment = FALSE;
break;
}
+ if (new_action->do_action)
+ removed_bytes += new_action->removed_bytes;
}
if (!bad_alignment)
{
}
}
- removed_bytes = 0;
- for (i = 0; i < ebb_table->action_count; ++i)
+ removed_bytes = 0;
+ for (i = 0; i < ebb_table->action_count; ++i)
+ {
+ proposed_action *action = &ebb_table->actions[i];
+ if (action->do_action)
+ removed_bytes += action->removed_bytes;
+ }
+
+ if ((removed_bytes % (1 << ebb_table->ebb.sec->alignment_power)) != 0
+ && ebb->ends_unreachable)
+ {
+ proposed_action *action;
+ int br;
+ int extra_space;
+
+ BFD_ASSERT (ebb_table->action_count != 0);
+ action = &ebb_table->actions[ebb_table->action_count - 1];
+ BFD_ASSERT (action->action == ta_fill);
+ BFD_ASSERT (ebb->ends_unreachable->flags & XTENSA_PROP_UNREACHABLE);
+
+ extra_space = compute_fill_extra_space (ebb->ends_unreachable);
+ br = action->removed_bytes + removed_bytes + extra_space;
+ br = br & ((1 << ebb->sec->alignment_power ) - 1);
+
+ action->removed_bytes = extra_space - br;
+ }
+ return TRUE;
+}
+
+
+/* The xlate_map is a sorted array of address mappings designed to
+ answer the offset_with_removed_text() query with a binary search instead
+ of a linear search through the section's action_list. */
+
+typedef struct xlate_map_entry xlate_map_entry_t;
+typedef struct xlate_map xlate_map_t;
+
+struct xlate_map_entry
+{
+ unsigned orig_address;
+ unsigned new_address;
+ unsigned size;
+};
+
+struct xlate_map
+{
+ unsigned entry_count;
+ xlate_map_entry_t *entry;
+};
+
+
+static int
+xlate_compare (const void *a_v, const void *b_v)
+{
+ const xlate_map_entry_t *a = (const xlate_map_entry_t *) a_v;
+ const xlate_map_entry_t *b = (const xlate_map_entry_t *) b_v;
+ if (a->orig_address < b->orig_address)
+ return -1;
+ if (a->orig_address > (b->orig_address + b->size - 1))
+ return 1;
+ return 0;
+}
+
+
+static bfd_vma
+xlate_offset_with_removed_text (const xlate_map_t *map,
+ text_action_list *action_list,
+ bfd_vma offset)
+{
+ xlate_map_entry_t tmp;
+ void *r;
+ xlate_map_entry_t *e;
+
+ if (map == NULL)
+ return offset_with_removed_text (action_list, offset);
+
+ if (map->entry_count == 0)
+ return offset;
+
+ tmp.orig_address = offset;
+ tmp.new_address = offset;
+ tmp.size = 1;
+
+ r = bsearch (&offset, map->entry, map->entry_count,
+ sizeof (xlate_map_entry_t), &xlate_compare);
+ e = (xlate_map_entry_t *) r;
+
+ BFD_ASSERT (e != NULL);
+ if (e == NULL)
+ return offset;
+ return e->new_address - e->orig_address + offset;
+}
+
+
+/* Build a binary searchable offset translation map from a section's
+ action list. */
+
+static xlate_map_t *
+build_xlate_map (asection *sec, xtensa_relax_info *relax_info)
+{
+ xlate_map_t *map = (xlate_map_t *) bfd_malloc (sizeof (xlate_map_t));
+ text_action_list *action_list = &relax_info->action_list;
+ unsigned num_actions = 0;
+ text_action *r;
+ int removed;
+ xlate_map_entry_t *current_entry;
+
+ if (map == NULL)
+ return NULL;
+
+ num_actions = action_list_count (action_list);
+ map->entry = (xlate_map_entry_t *)
+ bfd_malloc (sizeof (xlate_map_entry_t) * (num_actions + 1));
+ if (map->entry == NULL)
{
- proposed_action *action = &ebb_table->actions[i];
- if (action->do_action)
- removed_bytes += action->removed_bytes;
+ free (map);
+ return NULL;
}
+ map->entry_count = 0;
+
+ removed = 0;
+ current_entry = &map->entry[0];
- if ((removed_bytes % (1 << ebb_table->ebb.sec->alignment_power)) != 0
- && ebb->ends_unreachable)
+ current_entry->orig_address = 0;
+ current_entry->new_address = 0;
+ current_entry->size = 0;
+
+ for (r = action_list->head; r != NULL; r = r->next)
{
- proposed_action *action;
- int br;
- int extra_space;
+ unsigned orig_size = 0;
+ switch (r->action)
+ {
+ case ta_none:
+ case ta_remove_insn:
+ case ta_convert_longcall:
+ case ta_remove_literal:
+ case ta_add_literal:
+ break;
+ case ta_remove_longcall:
+ orig_size = 6;
+ break;
+ case ta_narrow_insn:
+ orig_size = 3;
+ break;
+ case ta_widen_insn:
+ orig_size = 2;
+ break;
+ case ta_fill:
+ break;
+ }
+ current_entry->size =
+ r->offset + orig_size - current_entry->orig_address;
+ if (current_entry->size != 0)
+ {
+ current_entry++;
+ map->entry_count++;
+ }
+ current_entry->orig_address = r->offset + orig_size;
+ removed += r->removed_bytes;
+ current_entry->new_address = r->offset + orig_size - removed;
+ current_entry->size = 0;
+ }
- BFD_ASSERT (ebb_table->action_count != 0);
- action = &ebb_table->actions[ebb_table->action_count - 1];
- BFD_ASSERT (action->action == ta_fill);
- BFD_ASSERT (ebb->ends_unreachable->flags & XTENSA_PROP_UNREACHABLE);
+ current_entry->size = (bfd_get_section_limit (sec->owner, sec)
+ - current_entry->orig_address);
+ if (current_entry->size != 0)
+ map->entry_count++;
- extra_space = compute_fill_extra_space (ebb->ends_unreachable);
- br = action->removed_bytes + removed_bytes + extra_space;
- br = br & ((1 << ebb->sec->alignment_power ) - 1);
+ return map;
+}
- action->removed_bytes = extra_space - br;
- }
- return TRUE;
+
+/* Free an offset translation map. */
+
+static void
+free_xlate_map (xlate_map_t *map)
+{
+ if (map && map->entry)
+ free (map->entry);
+ if (map)
+ free (map);
}
asection *sec,
bfd_byte *contents,
Elf_Internal_Rela *internal_relocs,
- const ebb_constraint *constraint)
+ const ebb_constraint *constraint,
+ const xtensa_opcode *reloc_opcodes)
{
unsigned i, j;
Elf_Internal_Rela *irel;
+ xlate_map_t *xmap = NULL;
+ bfd_boolean ok = TRUE;
xtensa_relax_info *relax_info;
relax_info = get_xtensa_relax_info (sec);
+ if (relax_info && sec->reloc_count > 100)
+ {
+ xmap = build_xlate_map (sec, relax_info);
+ /* NULL indicates out of memory, but the slow version
+ can still be used. */
+ }
+
for (i = 0; i < sec->reloc_count; i++)
{
r_reloc r_rel;
that fit before linking must fit after linking. Thus we only
need to deal with relocations to the same section that are
PC-relative. */
- if (ELF32_R_TYPE (irel->r_info) == R_XTENSA_ASM_SIMPLIFY
+ if (r_type == R_XTENSA_ASM_SIMPLIFY
+ || r_type == R_XTENSA_32_PCREL
|| !howto->pc_relative)
continue;
if (relax_info)
{
- self_offset = offset_with_removed_text (&relax_info->action_list,
- orig_self_offset);
- target_offset = offset_with_removed_text (&relax_info->action_list,
- orig_target_offset);
+ self_offset =
+ xlate_offset_with_removed_text (xmap, &relax_info->action_list,
+ orig_self_offset);
+ target_offset =
+ xlate_offset_with_removed_text (xmap, &relax_info->action_list,
+ orig_target_offset);
}
self_removed_bytes = 0;
xtensa_opcode opcode;
int opnum;
- opcode = get_relocation_opcode (abfd, sec, contents, irel);
+ if (reloc_opcodes)
+ opcode = reloc_opcodes[i];
+ else
+ opcode = get_relocation_opcode (abfd, sec, contents, irel);
if (opcode == XTENSA_UNDEFINED)
- return FALSE;
+ {
+ ok = FALSE;
+ break;
+ }
opnum = get_relocation_opnd (opcode, ELF32_R_TYPE (irel->r_info));
if (opnum == XTENSA_UNDEFINED)
- return FALSE;
+ {
+ ok = FALSE;
+ break;
+ }
if (!pcrel_reloc_fits (opcode, opnum, self_offset, target_offset))
- return FALSE;
+ {
+ ok = FALSE;
+ break;
+ }
}
}
- return TRUE;
+ if (xmap)
+ free_xlate_map (xmap);
+
+ return ok;
}
/* Check if the relocation was from an L32R that is being removed
because a CALLX was converted to a direct CALL, and check if
there are no other relocations to the literal. */
- if (is_removable_literal (rel, i, src_relocs, relax_info->src_count))
+ if (is_removable_literal (rel, i, src_relocs, relax_info->src_count,
+ sec, prop_table, ptblsize))
{
if (!remove_dead_literal (abfd, sec, link_info, internal_relocs,
irel, rel, prop_table, ptblsize))
is_removable_literal (const source_reloc *rel,
int i,
const source_reloc *src_relocs,
- int src_count)
+ int src_count,
+ asection *sec,
+ property_table_entry *prop_table,
+ int ptblsize)
{
const source_reloc *curr_rel;
+ property_table_entry *entry;
+
if (!rel->is_null)
return FALSE;
+ entry = elf_xtensa_find_property_entry (prop_table, ptblsize,
+ sec->vma + rel->r_rel.target_offset);
+ if (entry && (entry->flags & XTENSA_PROP_NO_TRANSFORM))
+ return FALSE;
+
for (++i; i < src_count; ++i)
{
curr_rel = &src_relocs[i];
!= sec->output_section)
return FALSE;
+ /* Absolute literals in the same output section can always be
+ combined. */
+ if (reloc[i].is_abs_literal)
+ continue;
+
/* A literal with no PC-relative relocations can be moved anywhere. */
if (reloc[i].opnd != -1)
{
entry = elf_xtensa_find_property_entry
(prop_table, ptblsize, sec->vma + rel->r_rel.target_offset);
- if (entry && (entry->flags & XTENSA_PROP_INSN_NO_TRANSFORM))
+ if (entry && (entry->flags & XTENSA_PROP_NO_TRANSFORM))
return TRUE;
/* Mark that the literal will be coalesced. */
relocs_fit = check_section_ebb_pcrels_fit (target_sec->owner, target_sec,
target_sec_cache->contents,
target_sec_cache->relocs,
- &ebb_table);
+ &ebb_table, NULL);
if (!relocs_fit)
return FALSE;
if (relax_info->is_relaxable_literal_section
|| relax_info->is_relaxable_asm_section)
{
+ pin_internal_relocs (sec, internal_relocs);
+
if (r_type != R_XTENSA_NONE
&& find_removed_literal (&relax_info->removed_list,
irel->r_offset))
irel->r_info = ELF32_R_INFO (0, R_XTENSA_NONE);
irel->r_offset = offset_with_removed_text
(&relax_info->action_list, irel->r_offset);
- pin_internal_relocs (sec, internal_relocs);
continue;
}
we may need to change the relocation's target offset. */
target_sec = r_reloc_get_section (&r_rel);
- target_relax_info = get_xtensa_relax_info (target_sec);
+ /* For a reference to a discarded section from a DWARF section,
+ i.e., where action_discarded is PRETEND, the symbol will
+ eventually be modified to refer to the kept section (at least if
+ the kept and discarded sections are the same size). Anticipate
+ that here and adjust things accordingly. */
+ if (! elf_xtensa_ignore_discarded_relocs (sec)
+ && elf_xtensa_action_discarded (sec) == PRETEND
+ && sec->sec_info_type != ELF_INFO_TYPE_STABS
+ && target_sec != NULL
+ && elf_discarded_section (target_sec))
+ {
+ /* It would be natural to call _bfd_elf_check_kept_section
+ here, but it's not exported from elflink.c. It's also a
+ fairly expensive check. Adjusting the relocations to the
+ discarded section is fairly harmless; it will only adjust
+ some addends and difference values. If it turns out that
+ _bfd_elf_check_kept_section fails later, it won't matter,
+ so just compare the section names to find the right group
+ member. */
+ asection *kept = target_sec->kept_section;
+ if (kept != NULL)
+ {
+ if ((kept->flags & SEC_GROUP) != 0)
+ {
+ asection *first = elf_next_in_group (kept);
+ asection *s = first;
+
+ kept = NULL;
+ while (s != NULL)
+ {
+ if (strcmp (s->name, target_sec->name) == 0)
+ {
+ kept = s;
+ break;
+ }
+ s = elf_next_in_group (s);
+ if (s == first)
+ break;
+ }
+ }
+ }
+ if (kept != NULL
+ && ((target_sec->rawsize != 0
+ ? target_sec->rawsize : target_sec->size)
+ == (kept->rawsize != 0 ? kept->rawsize : kept->size)))
+ target_sec = kept;
+ }
+
+ target_relax_info = get_xtensa_relax_info (target_sec);
if (target_relax_info
&& (target_relax_info->is_relaxable_literal_section
|| target_relax_info->is_relaxable_asm_section))
{
r_reloc new_reloc;
- reloc_bfd_fix *fix;
- bfd_vma addend_displacement;
-
- translate_reloc (&r_rel, &new_reloc);
+ target_sec = translate_reloc (&r_rel, &new_reloc, target_sec);
if (r_type == R_XTENSA_DIFF8
|| r_type == R_XTENSA_DIFF16
pin_contents (sec, contents);
}
- /* FIXME: If the relocation still references a section in
- the same input file, the relocation should be modified
- directly instead of adding a "fix" record. */
-
- addend_displacement =
- new_reloc.target_offset + new_reloc.virtual_offset;
-
- fix = reloc_bfd_fix_init (sec, source_offset, r_type, 0,
- r_reloc_get_section (&new_reloc),
- addend_displacement, TRUE);
- add_fix (sec, fix);
+ /* If the relocation still references a section in the same
+ input file, modify the relocation directly instead of
+ adding a "fix" record. */
+ if (target_sec->owner == abfd)
+ {
+ unsigned r_symndx = ELF32_R_SYM (new_reloc.rela.r_info);
+ irel->r_info = ELF32_R_INFO (r_symndx, r_type);
+ irel->r_addend = new_reloc.rela.r_addend;
+ pin_internal_relocs (sec, internal_relocs);
+ }
+ else
+ {
+ bfd_vma addend_displacement;
+ reloc_bfd_fix *fix;
+
+ addend_displacement =
+ new_reloc.target_offset + new_reloc.virtual_offset;
+ fix = reloc_bfd_fix_init (sec, source_offset, r_type,
+ target_sec,
+ addend_displacement, TRUE);
+ add_fix (sec, fix);
+ }
}
-
- pin_internal_relocs (sec, internal_relocs);
}
}
of move, copy and fill records. Use the move, copy and
fill records to perform the actions once. */
- bfd_size_type size = sec->size;
int removed = 0;
bfd_size_type final_size, copy_size, orig_insn_size;
bfd_byte *scratch = NULL;
bfd_byte *dup_contents = NULL;
- bfd_size_type orig_size = size;
+ bfd_size_type orig_size = sec->size;
bfd_vma orig_dot = 0;
bfd_vma orig_dot_copied = 0; /* Byte copied already from
orig dot in physical memory. */
copy_size = 2;
memmove (scratch, &contents[orig_dot], orig_insn_size);
BFD_ASSERT (action->removed_bytes == 1);
- rv = narrow_instruction (scratch, final_size, 0, TRUE);
+ rv = narrow_instruction (scratch, final_size, 0);
BFD_ASSERT (rv);
memmove (&dup_contents[dup_dot], scratch, copy_size);
orig_dot += orig_insn_size;
copy_size = 3;
memmove (scratch, &contents[orig_dot], orig_insn_size);
BFD_ASSERT (action->removed_bytes == -1);
- rv = widen_instruction (scratch, final_size, 0, TRUE);
+ rv = widen_instruction (scratch, final_size, 0);
BFD_ASSERT (rv);
memmove (&dup_contents[dup_dot], scratch, copy_size);
orig_dot += orig_insn_size;
break;
}
- size -= action->removed_bytes;
removed += action->removed_bytes;
BFD_ASSERT (dup_dot <= final_size);
BFD_ASSERT (orig_dot <= orig_size);
free (scratch);
pin_contents (sec, contents);
+ if (sec->rawsize == 0)
+ sec->rawsize = sec->size;
sec->size = final_size;
}
/* Fix up a relocation to take account of removed literals. */
-static void
-translate_reloc (const r_reloc *orig_rel, r_reloc *new_rel)
+static asection *
+translate_reloc (const r_reloc *orig_rel, r_reloc *new_rel, asection *sec)
{
- asection *sec;
xtensa_relax_info *relax_info;
removed_literal *removed;
- bfd_vma new_offset, target_offset, removed_bytes;
+ bfd_vma target_offset, base_offset;
+ text_action *act;
*new_rel = *orig_rel;
if (!r_reloc_is_defined (orig_rel))
- return;
- sec = r_reloc_get_section (orig_rel);
+ return sec ;
relax_info = get_xtensa_relax_info (sec);
- BFD_ASSERT (relax_info);
-
- if (!relax_info->is_relaxable_literal_section
- && !relax_info->is_relaxable_asm_section)
- return;
+ BFD_ASSERT (relax_info && (relax_info->is_relaxable_literal_section
+ || relax_info->is_relaxable_asm_section));
target_offset = orig_rel->target_offset;
if (!relax_info
|| (!relax_info->is_relaxable_literal_section
&& !relax_info->is_relaxable_asm_section))
- return;
+ return sec;
}
target_offset = new_rel->target_offset;
}
- /* ...and the target address may have been moved within its section. */
- new_offset = offset_with_removed_text (&relax_info->action_list,
- target_offset);
+ /* Find the base offset of the reloc symbol, excluding any addend from the
+ reloc or from the section contents (for a partial_inplace reloc). Then
+ find the adjusted values of the offsets due to relaxation. The base
+ offset is needed to determine the change to the reloc's addend; the reloc
+ addend should not be adjusted due to relaxations located before the base
+ offset. */
+
+ base_offset = r_reloc_get_target_offset (new_rel) - new_rel->rela.r_addend;
+ act = relax_info->action_list.head;
+ if (base_offset <= target_offset)
+ {
+ int base_removed = removed_by_actions (&act, base_offset, FALSE);
+ int addend_removed = removed_by_actions (&act, target_offset, FALSE);
+ new_rel->target_offset = target_offset - base_removed - addend_removed;
+ new_rel->rela.r_addend -= addend_removed;
+ }
+ else
+ {
+ /* Handle a negative addend. The base offset comes first. */
+ int tgt_removed = removed_by_actions (&act, target_offset, FALSE);
+ int addend_removed = removed_by_actions (&act, base_offset, FALSE);
+ new_rel->target_offset = target_offset - tgt_removed;
+ new_rel->rela.r_addend += addend_removed;
+ }
- /* Modify the offset and addend. */
- removed_bytes = target_offset - new_offset;
- new_rel->target_offset = new_offset;
- new_rel->rela.r_addend -= removed_bytes;
+ return sec;
}
asection *input_section,
Elf_Internal_Rela *rel)
{
+ struct elf_xtensa_link_hash_table *htab;
Elf_Internal_Shdr *symtab_hdr;
struct elf_link_hash_entry **sym_hashes;
unsigned long r_symndx;
struct elf_link_hash_entry *h;
bfd_boolean dynamic_symbol;
+ htab = elf_xtensa_hash_table (info);
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
sym_hashes = elf_sym_hashes (abfd);
else
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
- dynamic_symbol = xtensa_elf_dynamic_symbol_p (h, info);
+ dynamic_symbol = elf_xtensa_dynamic_symbol_p (h, info);
if ((r_type == R_XTENSA_32 || r_type == R_XTENSA_PLT)
&& (input_section->flags & SEC_ALLOC) != 0
&& (dynamic_symbol || info->shared))
{
- bfd *dynobj;
- const char *srel_name;
asection *srel;
bfd_boolean is_plt = FALSE;
- dynobj = elf_hash_table (info)->dynobj;
- BFD_ASSERT (dynobj != NULL);
-
if (dynamic_symbol && r_type == R_XTENSA_PLT)
{
- srel_name = ".rela.plt";
+ srel = htab->srelplt;
is_plt = TRUE;
}
else
- srel_name = ".rela.got";
+ srel = htab->srelgot;
/* Reduce size of the .rela.* section by one reloc. */
- srel = bfd_get_section_by_name (dynobj, srel_name);
BFD_ASSERT (srel != NULL);
BFD_ASSERT (srel->size >= sizeof (Elf32_External_Rela));
srel->size -= sizeof (Elf32_External_Rela);
reloc_index = srel->size / sizeof (Elf32_External_Rela);
chunk = reloc_index / PLT_ENTRIES_PER_CHUNK;
- splt = elf_xtensa_get_plt_section (dynobj, chunk);
- sgotplt = elf_xtensa_get_gotplt_section (dynobj, chunk);
+ splt = elf_xtensa_get_plt_section (info, chunk);
+ sgotplt = elf_xtensa_get_gotplt_section (info, chunk);
BFD_ASSERT (splt != NULL && sgotplt != NULL);
/* Check if an entire PLT chunk has just been eliminated. */
if (reloc_index % PLT_ENTRIES_PER_CHUNK == 0)
{
/* The two magic GOT entries for that chunk can go away. */
- srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
+ srelgot = htab->srelgot;
BFD_ASSERT (srelgot != NULL);
srelgot->reloc_count -= 2;
srelgot->size -= 2 * sizeof (Elf32_External_Rela);
/* Currently, we cannot move relocations during a relocatable link. */
BFD_ASSERT (!link_info->relocatable);
- fix = reloc_bfd_fix_init (sec, offset, r_type, r_rel->abfd,
+ fix = reloc_bfd_fix_init (sec, offset, r_type,
r_reloc_get_section (r_rel),
r_rel->target_offset + r_rel->virtual_offset,
FALSE);
{
Elf_Internal_Rela *internal_relocs;
bfd_byte *contents;
- unsigned i, nexti;
+ unsigned i;
bfd_boolean ok = TRUE;
bfd_boolean is_full_prop_section;
size_t last_zfill_target_offset = 0;
asection *last_zfill_target_sec = NULL;
bfd_size_type sec_size;
+ bfd_size_type entry_size;
sec_size = bfd_get_section_limit (abfd, sec);
internal_relocs = retrieve_internal_relocs (abfd, sec,
goto error_return;
}
- is_full_prop_section =
- ((strcmp (sec->name, XTENSA_PROP_SEC_NAME) == 0)
- || (strncmp (sec->name, ".gnu.linkonce.prop.",
- sizeof ".gnu.linkonce.prop." - 1) == 0));
+ is_full_prop_section = xtensa_is_proptable_section (sec);
+ if (is_full_prop_section)
+ entry_size = 12;
+ else
+ entry_size = 8;
if (internal_relocs)
{
size_p = &contents[irel->r_offset + 4];
flags_p = NULL;
if (is_full_prop_section)
- {
- flags_p = &contents[irel->r_offset + 8];
- BFD_ASSERT (irel->r_offset + 12 <= sec_size);
- }
- else
- BFD_ASSERT (irel->r_offset + 8 <= sec_size);
+ flags_p = &contents[irel->r_offset + 8];
+ BFD_ASSERT (irel->r_offset + entry_size <= sec_size);
target_sec = r_reloc_get_section (&val.r_rel);
target_relax_info = get_xtensa_relax_info (target_sec);
|| target_relax_info->is_relaxable_asm_section ))
{
/* Translate the relocation's destination. */
- bfd_vma new_offset, new_end_offset;
+ bfd_vma old_offset = val.r_rel.target_offset;
+ bfd_vma new_offset;
long old_size, new_size;
-
- new_offset = offset_with_removed_text
- (&target_relax_info->action_list, val.r_rel.target_offset);
+ text_action *act = target_relax_info->action_list.head;
+ new_offset = old_offset -
+ removed_by_actions (&act, old_offset, FALSE);
/* Assert that we are not out of bounds. */
old_size = bfd_get_32 (abfd, size_p);
+ new_size = old_size;
if (old_size == 0)
{
offset before or after the fill address depending
on whether the expanding unreachable entry
preceeds it. */
- if (last_zfill_target_sec
- && last_zfill_target_sec == target_sec
- && last_zfill_target_offset == val.r_rel.target_offset)
- new_end_offset = new_offset;
- else
+ if (last_zfill_target_sec == 0
+ || last_zfill_target_sec != target_sec
+ || last_zfill_target_offset != old_offset)
{
- new_end_offset = new_offset;
- new_offset = offset_with_removed_text_before_fill
- (&target_relax_info->action_list,
- val.r_rel.target_offset);
+ bfd_vma new_end_offset = new_offset;
+
+ /* Recompute the new_offset, but this time don't
+ include any fill inserted by relaxation. */
+ act = target_relax_info->action_list.head;
+ new_offset = old_offset -
+ removed_by_actions (&act, old_offset, TRUE);
/* If it is not unreachable and we have not yet
seen an unreachable at this address, place it
before the fill address. */
- if (!flags_p
- || (bfd_get_32 (abfd, flags_p)
- & XTENSA_PROP_UNREACHABLE) == 0)
- new_end_offset = new_offset;
- else
+ if (flags_p && (bfd_get_32 (abfd, flags_p)
+ & XTENSA_PROP_UNREACHABLE) != 0)
{
+ new_size = new_end_offset - new_offset;
+
last_zfill_target_sec = target_sec;
- last_zfill_target_offset = val.r_rel.target_offset;
+ last_zfill_target_offset = old_offset;
}
}
}
else
- {
- new_end_offset = offset_with_removed_text_before_fill
- (&target_relax_info->action_list,
- val.r_rel.target_offset + old_size);
- }
-
- new_size = new_end_offset - new_offset;
+ new_size -=
+ removed_by_actions (&act, old_offset + old_size, TRUE);
if (new_size != old_size)
{
pin_contents (sec, contents);
}
- if (new_offset != val.r_rel.target_offset)
+ if (new_offset != old_offset)
{
- bfd_vma diff = new_offset - val.r_rel.target_offset;
+ bfd_vma diff = new_offset - old_offset;
irel->r_addend += diff;
pin_internal_relocs (sec, internal_relocs);
}
reclaim the space in the output section, so we do this twice. */
if (internal_relocs && (!link_info->relocatable
- || strcmp (sec->name, XTENSA_LIT_SEC_NAME) == 0))
+ || xtensa_is_littable_section (sec)))
{
Elf_Internal_Rela *last_irel = NULL;
+ Elf_Internal_Rela *irel, *next_rel, *rel_end;
int removed_bytes = 0;
- bfd_vma offset, last_irel_offset;
- bfd_vma section_size;
- bfd_size_type entry_size;
+ bfd_vma offset;
flagword predef_flags;
- if (is_full_prop_section)
- entry_size = 12;
- else
- entry_size = 8;
-
predef_flags = xtensa_get_property_predef_flags (sec);
- /* Walk over memory and irels at the same time.
+ /* Walk over memory and relocations at the same time.
This REQUIRES that the internal_relocs be sorted by offset. */
qsort (internal_relocs, sec->reloc_count, sizeof (Elf_Internal_Rela),
internal_reloc_compare);
- nexti = 0; /* Index into internal_relocs. */
pin_internal_relocs (sec, internal_relocs);
pin_contents (sec, contents);
- last_irel_offset = (bfd_vma) -1;
- section_size = sec->size;
- BFD_ASSERT (section_size % entry_size == 0);
+ next_rel = internal_relocs;
+ rel_end = internal_relocs + sec->reloc_count;
- for (offset = 0; offset < section_size; offset += entry_size)
+ BFD_ASSERT (sec->size % entry_size == 0);
+
+ for (offset = 0; offset < sec->size; offset += entry_size)
{
- Elf_Internal_Rela *irel, *next_irel;
+ Elf_Internal_Rela *offset_rel, *extra_rel;
bfd_vma bytes_to_remove, size, actual_offset;
- bfd_boolean remove_this_irel;
+ bfd_boolean remove_this_rel;
flagword flags;
- irel = NULL;
- next_irel = NULL;
-
- /* Find the next two relocations (if there are that many left),
- skipping over any R_XTENSA_NONE relocs. On entry, "nexti" is
- the starting reloc index. After these two loops, "i"
- is the index of the first non-NONE reloc past that starting
- index, and "nexti" is the index for the next non-NONE reloc
- after "i". */
+ /* Find the first relocation for the entry at the current offset.
+ Adjust the offsets of any extra relocations for the previous
+ entry. */
+ offset_rel = NULL;
+ if (next_rel)
+ {
+ for (irel = next_rel; irel < rel_end; irel++)
+ {
+ if ((irel->r_offset == offset
+ && ELF32_R_TYPE (irel->r_info) != R_XTENSA_NONE)
+ || irel->r_offset > offset)
+ {
+ offset_rel = irel;
+ break;
+ }
+ irel->r_offset -= removed_bytes;
+ }
+ }
- for (i = nexti; i < sec->reloc_count; i++)
+ /* Find the next relocation (if there are any left). */
+ extra_rel = NULL;
+ if (offset_rel)
{
- if (ELF32_R_TYPE (internal_relocs[i].r_info) != R_XTENSA_NONE)
+ for (irel = offset_rel + 1; irel < rel_end; irel++)
{
- irel = &internal_relocs[i];
- break;
+ if (ELF32_R_TYPE (irel->r_info) != R_XTENSA_NONE)
+ {
+ extra_rel = irel;
+ break;
+ }
}
- internal_relocs[i].r_offset -= removed_bytes;
}
- for (nexti = i + 1; nexti < sec->reloc_count; nexti++)
+ /* Check if there are relocations on the current entry. There
+ should usually be a relocation on the offset field. If there
+ are relocations on the size or flags, then we can't optimize
+ this entry. Also, find the next relocation to examine on the
+ next iteration. */
+ if (offset_rel)
{
- if (ELF32_R_TYPE (internal_relocs[nexti].r_info)
- != R_XTENSA_NONE)
+ if (offset_rel->r_offset >= offset + entry_size)
{
- next_irel = &internal_relocs[nexti];
- break;
+ next_rel = offset_rel;
+ /* There are no relocations on the current entry, but we
+ might still be able to remove it if the size is zero. */
+ offset_rel = NULL;
+ }
+ else if (offset_rel->r_offset > offset
+ || (extra_rel
+ && extra_rel->r_offset < offset + entry_size))
+ {
+ /* There is a relocation on the size or flags, so we can't
+ do anything with this entry. Continue with the next. */
+ next_rel = offset_rel;
+ continue;
+ }
+ else
+ {
+ BFD_ASSERT (offset_rel->r_offset == offset);
+ offset_rel->r_offset -= removed_bytes;
+ next_rel = offset_rel + 1;
}
- internal_relocs[nexti].r_offset -= removed_bytes;
}
+ else
+ next_rel = NULL;
- remove_this_irel = FALSE;
+ remove_this_rel = FALSE;
bytes_to_remove = 0;
actual_offset = offset - removed_bytes;
size = bfd_get_32 (abfd, &contents[actual_offset + 4]);
else
flags = predef_flags;
- /* Check that the irels are sorted by offset,
- with only one per address. */
- BFD_ASSERT (!irel || (int) irel->r_offset > (int) last_irel_offset);
- BFD_ASSERT (!next_irel || next_irel->r_offset > irel->r_offset);
-
- /* Make sure there aren't relocs on the size or flag fields. */
- if ((irel && irel->r_offset == offset + 4)
- || (is_full_prop_section
- && irel && irel->r_offset == offset + 8))
- {
- irel->r_offset -= removed_bytes;
- last_irel_offset = irel->r_offset;
- }
- else if (next_irel && (next_irel->r_offset == offset + 4
- || (is_full_prop_section
- && next_irel->r_offset == offset + 8)))
- {
- nexti += 1;
- irel->r_offset -= removed_bytes;
- next_irel->r_offset -= removed_bytes;
- last_irel_offset = next_irel->r_offset;
- }
- else if (size == 0 && (flags & XTENSA_PROP_ALIGN) == 0
- && (flags & XTENSA_PROP_UNREACHABLE) == 0)
+ if (size == 0
+ && (flags & XTENSA_PROP_ALIGN) == 0
+ && (flags & XTENSA_PROP_UNREACHABLE) == 0)
{
/* Always remove entries with zero size and no alignment. */
bytes_to_remove = entry_size;
- if (irel && irel->r_offset == offset)
- {
- remove_this_irel = TRUE;
-
- irel->r_offset -= removed_bytes;
- last_irel_offset = irel->r_offset;
- }
+ if (offset_rel)
+ remove_this_rel = TRUE;
}
- else if (irel && irel->r_offset == offset)
+ else if (offset_rel
+ && ELF32_R_TYPE (offset_rel->r_info) == R_XTENSA_32)
{
- if (ELF32_R_TYPE (irel->r_info) == R_XTENSA_32)
+ if (last_irel)
{
- if (last_irel)
+ flagword old_flags;
+ bfd_vma old_size =
+ bfd_get_32 (abfd, &contents[last_irel->r_offset + 4]);
+ bfd_vma old_address =
+ (last_irel->r_addend
+ + bfd_get_32 (abfd, &contents[last_irel->r_offset]));
+ bfd_vma new_address =
+ (offset_rel->r_addend
+ + bfd_get_32 (abfd, &contents[actual_offset]));
+ if (is_full_prop_section)
+ old_flags = bfd_get_32
+ (abfd, &contents[last_irel->r_offset + 8]);
+ else
+ old_flags = predef_flags;
+
+ if ((ELF32_R_SYM (offset_rel->r_info)
+ == ELF32_R_SYM (last_irel->r_info))
+ && old_address + old_size == new_address
+ && old_flags == flags
+ && (old_flags & XTENSA_PROP_INSN_BRANCH_TARGET) == 0
+ && (old_flags & XTENSA_PROP_INSN_LOOP_TARGET) == 0)
{
- flagword old_flags;
- bfd_vma old_size =
- bfd_get_32 (abfd, &contents[last_irel->r_offset + 4]);
- bfd_vma old_address =
- (last_irel->r_addend
- + bfd_get_32 (abfd, &contents[last_irel->r_offset]));
- bfd_vma new_address =
- (irel->r_addend
- + bfd_get_32 (abfd, &contents[actual_offset]));
- if (is_full_prop_section)
- old_flags = bfd_get_32
- (abfd, &contents[last_irel->r_offset + 8]);
- else
- old_flags = predef_flags;
-
- if ((ELF32_R_SYM (irel->r_info)
- == ELF32_R_SYM (last_irel->r_info))
- && old_address + old_size == new_address
- && old_flags == flags
- && (old_flags & XTENSA_PROP_INSN_BRANCH_TARGET) == 0
- && (old_flags & XTENSA_PROP_INSN_LOOP_TARGET) == 0)
- {
- /* Fix the old size. */
- bfd_put_32 (abfd, old_size + size,
- &contents[last_irel->r_offset + 4]);
- bytes_to_remove = entry_size;
- remove_this_irel = TRUE;
- }
- else
- last_irel = irel;
+ /* Fix the old size. */
+ bfd_put_32 (abfd, old_size + size,
+ &contents[last_irel->r_offset + 4]);
+ bytes_to_remove = entry_size;
+ remove_this_rel = TRUE;
}
else
- last_irel = irel;
+ last_irel = offset_rel;
}
-
- irel->r_offset -= removed_bytes;
- last_irel_offset = irel->r_offset;
+ else
+ last_irel = offset_rel;
}
- if (remove_this_irel)
+ if (remove_this_rel)
{
- irel->r_info = ELF32_R_INFO (0, R_XTENSA_NONE);
- irel->r_offset -= bytes_to_remove;
+ offset_rel->r_info = ELF32_R_INFO (0, R_XTENSA_NONE);
+ offset_rel->r_offset = 0;
}
if (bytes_to_remove != 0)
{
removed_bytes += bytes_to_remove;
- if (offset + bytes_to_remove < section_size)
+ if (offset + bytes_to_remove < sec->size)
memmove (&contents[actual_offset],
&contents[actual_offset + bytes_to_remove],
- section_size - offset - bytes_to_remove);
+ sec->size - offset - bytes_to_remove);
}
}
if (removed_bytes)
{
+ /* Fix up any extra relocations on the last entry. */
+ for (irel = next_rel; irel < rel_end; irel++)
+ irel->r_offset -= removed_bytes;
+
/* Clear the removed bytes. */
- memset (&contents[section_size - removed_bytes], 0, removed_bytes);
+ memset (&contents[sec->size - removed_bytes], 0, removed_bytes);
- sec->size = section_size - removed_bytes;
+ if (sec->rawsize == 0)
+ sec->rawsize = sec->size;
+ sec->size -= removed_bytes;
if (xtensa_is_littable_section (sec))
{
- bfd *dynobj = elf_hash_table (link_info)->dynobj;
- if (dynobj)
- {
- asection *sgotloc =
- bfd_get_section_by_name (dynobj, ".got.loc");
- if (sgotloc)
- sgotloc->size -= removed_bytes;
- }
+ asection *sgotloc = elf_xtensa_hash_table (link_info)->sgotloc;
+ if (sgotloc)
+ sgotloc->size -= removed_bytes;
}
}
}
if (isym->st_shndx == sec_shndx)
{
- bfd_vma new_address = offset_with_removed_text
- (&relax_info->action_list, isym->st_value);
- bfd_vma new_size = isym->st_size;
+ text_action *act = relax_info->action_list.head;
+ bfd_vma orig_addr = isym->st_value;
- if (ELF32_ST_TYPE (isym->st_info) == STT_FUNC)
- {
- bfd_vma new_end = offset_with_removed_text
- (&relax_info->action_list, isym->st_value + isym->st_size);
- new_size = new_end - new_address;
- }
+ isym->st_value -= removed_by_actions (&act, orig_addr, FALSE);
- isym->st_value = new_address;
- isym->st_size = new_size;
+ if (ELF32_ST_TYPE (isym->st_info) == STT_FUNC)
+ isym->st_size -=
+ removed_by_actions (&act, orig_addr + isym->st_size, FALSE);
}
}
|| sym_hash->root.type == bfd_link_hash_defweak)
&& sym_hash->root.u.def.section == sec)
{
- bfd_vma new_address = offset_with_removed_text
- (&relax_info->action_list, sym_hash->root.u.def.value);
- bfd_vma new_size = sym_hash->size;
+ text_action *act = relax_info->action_list.head;
+ bfd_vma orig_addr = sym_hash->root.u.def.value;
- if (sym_hash->type == STT_FUNC)
- {
- bfd_vma new_end = offset_with_removed_text
- (&relax_info->action_list,
- sym_hash->root.u.def.value + sym_hash->size);
- new_size = new_end - new_address;
- }
+ sym_hash->root.u.def.value -=
+ removed_by_actions (&act, orig_addr, FALSE);
- sym_hash->root.u.def.value = new_address;
- sym_hash->size = new_size;
+ if (sym_hash->type == STT_FUNC)
+ sym_hash->size -=
+ removed_by_actions (&act, orig_addr + sym_hash->size, FALSE);
}
}
/* Miscellaneous utility functions.... */
static asection *
-elf_xtensa_get_plt_section (bfd *dynobj, int chunk)
+elf_xtensa_get_plt_section (struct bfd_link_info *info, int chunk)
{
+ struct elf_xtensa_link_hash_table *htab;
+ bfd *dynobj;
char plt_name[10];
if (chunk == 0)
- return bfd_get_section_by_name (dynobj, ".plt");
+ {
+ htab = elf_xtensa_hash_table (info);
+ return htab->splt;
+ }
+ dynobj = elf_hash_table (info)->dynobj;
sprintf (plt_name, ".plt.%u", chunk);
return bfd_get_section_by_name (dynobj, plt_name);
}
static asection *
-elf_xtensa_get_gotplt_section (bfd *dynobj, int chunk)
+elf_xtensa_get_gotplt_section (struct bfd_link_info *info, int chunk)
{
+ struct elf_xtensa_link_hash_table *htab;
+ bfd *dynobj;
char got_name[14];
if (chunk == 0)
- return bfd_get_section_by_name (dynobj, ".got.plt");
+ {
+ htab = elf_xtensa_hash_table (info);
+ return htab->sgotplt;
+ }
+ dynobj = elf_hash_table (info)->dynobj;
sprintf (got_name, ".got.plt.%u", chunk);
return bfd_get_section_by_name (dynobj, got_name);
}
if (section_index == SHN_UNDEF)
target_sec = bfd_und_section_ptr;
- else if (section_index > 0 && section_index < SHN_LORESERVE)
- target_sec = bfd_section_from_elf_index (abfd, section_index);
else if (section_index == SHN_ABS)
target_sec = bfd_abs_section_ptr;
else if (section_index == SHN_COMMON)
target_sec = bfd_com_section_ptr;
else
- /* Who knows? */
- target_sec = NULL;
+ target_sec = bfd_section_from_elf_index (abfd, section_index);
}
else
{
}
-static int linkonce_len = sizeof (".gnu.linkonce.") - 1;
-static int insn_sec_len = sizeof (XTENSA_INSN_SEC_NAME) - 1;
-static int lit_sec_len = sizeof (XTENSA_LIT_SEC_NAME) - 1;
-static int prop_sec_len = sizeof (XTENSA_PROP_SEC_NAME) - 1;
-
-
static bfd_boolean
xtensa_is_property_section (asection *sec)
{
- if (strncmp (XTENSA_INSN_SEC_NAME, sec->name, insn_sec_len) == 0
- || strncmp (XTENSA_LIT_SEC_NAME, sec->name, lit_sec_len) == 0
- || strncmp (XTENSA_PROP_SEC_NAME, sec->name, prop_sec_len) == 0)
+ if (xtensa_is_insntable_section (sec)
+ || xtensa_is_littable_section (sec)
+ || xtensa_is_proptable_section (sec))
return TRUE;
- if (strncmp (".gnu.linkonce.", sec->name, linkonce_len) == 0
- && (strncmp (&sec->name[linkonce_len], "x.", 2) == 0
- || strncmp (&sec->name[linkonce_len], "p.", 2) == 0
- || strncmp (&sec->name[linkonce_len], "prop.", 5) == 0))
+ return FALSE;
+}
+
+
+static bfd_boolean
+xtensa_is_insntable_section (asection *sec)
+{
+ if (CONST_STRNEQ (sec->name, XTENSA_INSN_SEC_NAME)
+ || CONST_STRNEQ (sec->name, ".gnu.linkonce.x."))
return TRUE;
return FALSE;
static bfd_boolean
xtensa_is_littable_section (asection *sec)
{
- if (strncmp (XTENSA_LIT_SEC_NAME, sec->name, lit_sec_len) == 0)
+ if (CONST_STRNEQ (sec->name, XTENSA_LIT_SEC_NAME)
+ || CONST_STRNEQ (sec->name, ".gnu.linkonce.p."))
return TRUE;
- if (strncmp (".gnu.linkonce.", sec->name, linkonce_len) == 0
- && sec->name[linkonce_len] == 'p'
- && sec->name[linkonce_len + 1] == '.')
+ return FALSE;
+}
+
+
+static bfd_boolean
+xtensa_is_proptable_section (asection *sec)
+{
+ if (CONST_STRNEQ (sec->name, XTENSA_PROP_SEC_NAME)
+ || CONST_STRNEQ (sec->name, ".gnu.linkonce.prop."))
return TRUE;
return FALSE;
}
-char *
-xtensa_get_property_section_name (asection *sec, const char *base_name)
+/* Predicate function used to look up a section in a particular group. */
+
+static bfd_boolean
+match_section_group (bfd *abfd ATTRIBUTE_UNUSED, asection *sec, void *inf)
+{
+ const char *gname = inf;
+ const char *group_name = elf_group_name (sec);
+
+ return (group_name == gname
+ || (group_name != NULL
+ && gname != NULL
+ && strcmp (group_name, gname) == 0));
+}
+
+
+static int linkonce_len = sizeof (".gnu.linkonce.") - 1;
+
+static char *
+xtensa_property_section_name (asection *sec, const char *base_name)
{
- if (strncmp (sec->name, ".gnu.linkonce.", linkonce_len) == 0)
+ const char *suffix, *group_name;
+ char *prop_sec_name;
+
+ group_name = elf_group_name (sec);
+ if (group_name)
+ {
+ suffix = strrchr (sec->name, '.');
+ if (suffix == sec->name)
+ suffix = 0;
+ prop_sec_name = (char *) bfd_malloc (strlen (base_name) + 1
+ + (suffix ? strlen (suffix) : 0));
+ strcpy (prop_sec_name, base_name);
+ if (suffix)
+ strcat (prop_sec_name, suffix);
+ }
+ else if (strncmp (sec->name, ".gnu.linkonce.", linkonce_len) == 0)
{
- char *prop_sec_name;
- const char *suffix;
char *linkonce_kind = 0;
if (strcmp (base_name, XTENSA_INSN_SEC_NAME) == 0)
suffix = sec->name + linkonce_len;
/* For backward compatibility, replace "t." instead of inserting
the new linkonce_kind (but not for "prop" sections). */
- if (strncmp (suffix, "t.", 2) == 0 && linkonce_kind[1] == '.')
+ if (CONST_STRNEQ (suffix, "t.") && linkonce_kind[1] == '.')
suffix += 2;
strcat (prop_sec_name + linkonce_len, suffix);
+ }
+ else
+ prop_sec_name = strdup (base_name);
+
+ return prop_sec_name;
+}
+
+
+static asection *
+xtensa_get_property_section (asection *sec, const char *base_name)
+{
+ char *prop_sec_name;
+ asection *prop_sec;
+
+ prop_sec_name = xtensa_property_section_name (sec, base_name);
+ prop_sec = bfd_get_section_by_name_if (sec->owner, prop_sec_name,
+ match_section_group,
+ (void *) elf_group_name (sec));
+ free (prop_sec_name);
+ return prop_sec;
+}
+
- return prop_sec_name;
+asection *
+xtensa_make_property_section (asection *sec, const char *base_name)
+{
+ char *prop_sec_name;
+ asection *prop_sec;
+
+ /* Check if the section already exists. */
+ prop_sec_name = xtensa_property_section_name (sec, base_name);
+ prop_sec = bfd_get_section_by_name_if (sec->owner, prop_sec_name,
+ match_section_group,
+ (void *) elf_group_name (sec));
+ /* If not, create it. */
+ if (! prop_sec)
+ {
+ flagword flags = (SEC_RELOC | SEC_HAS_CONTENTS | SEC_READONLY);
+ flags |= (bfd_get_section_flags (sec->owner, sec)
+ & (SEC_LINK_ONCE | SEC_LINK_DUPLICATES));
+
+ prop_sec = bfd_make_section_anyway_with_flags
+ (sec->owner, strdup (prop_sec_name), flags);
+ if (! prop_sec)
+ return 0;
+
+ elf_group_name (prop_sec) = elf_group_name (sec);
}
- return strdup (base_name);
+ free (prop_sec_name);
+ return prop_sec;
}
flagword
xtensa_get_property_predef_flags (asection *sec)
{
- if (strcmp (sec->name, XTENSA_INSN_SEC_NAME) == 0
- || strncmp (sec->name, ".gnu.linkonce.x.",
- sizeof ".gnu.linkonce.x." - 1) == 0)
+ if (xtensa_is_insntable_section (sec))
return (XTENSA_PROP_INSN
- | XTENSA_PROP_INSN_NO_TRANSFORM
+ | XTENSA_PROP_NO_TRANSFORM
| XTENSA_PROP_INSN_NO_REORDER);
if (xtensa_is_littable_section (sec))
return (XTENSA_PROP_LITERAL
- | XTENSA_PROP_INSN_NO_TRANSFORM
+ | XTENSA_PROP_NO_TRANSFORM
| XTENSA_PROP_INSN_NO_REORDER);
return 0;
/* ".plt*" sections have no explicit relocations but they contain L32R
instructions that reference the corresponding ".got.plt*" sections. */
if ((sec->flags & SEC_LINKER_CREATED) != 0
- && strncmp (sec->name, ".plt", 4) == 0)
+ && CONST_STRNEQ (sec->name, ".plt"))
{
asection *sgotplt;
(*callback) (sec, sec_size, sgotplt, 0, closure);
}
+ /* Only ELF files are supported for Xtensa. Check here to avoid a segfault
+ when building uclibc, which runs "ld -b binary /dev/null". */
+ if (bfd_get_flavour (abfd) != bfd_target_elf_flavour)
+ return ok;
+
internal_relocs = retrieve_internal_relocs (abfd, sec,
link_info->keep_memory);
if (internal_relocs == NULL
module loader so that the literals are not placed after the text. */
static const struct bfd_elf_special_section elf_xtensa_special_sections[] =
{
- { ".fini.literal", 13, 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR },
- { ".init.literal", 13, 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR },
- { ".literal", 8, 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR },
- { NULL, 0, 0, 0, 0 }
+ { STRING_COMMA_LEN (".fini.literal"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR },
+ { STRING_COMMA_LEN (".init.literal"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR },
+ { STRING_COMMA_LEN (".literal"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR },
+ { STRING_COMMA_LEN (".xtensa.info"), 0, SHT_NOTE, 0 },
+ { NULL, 0, 0, 0, 0 }
};
\f
#ifndef ELF_ARCH
#define TARGET_BIG_NAME "elf32-xtensa-be"
#define ELF_ARCH bfd_arch_xtensa
-/* The new EM_XTENSA value will be recognized beginning in the Xtensa T1040
- release. However, we still have to generate files with the EM_XTENSA_OLD
- value so that pre-T1040 tools can read the files. As soon as we stop
- caring about pre-T1040 tools, the following two values should be
- swapped. At the same time, any other code that uses EM_XTENSA_OLD
- should be changed to use EM_XTENSA. */
-#define ELF_MACHINE_CODE EM_XTENSA_OLD
-#define ELF_MACHINE_ALT1 EM_XTENSA
+#define ELF_MACHINE_CODE EM_XTENSA
+#define ELF_MACHINE_ALT1 EM_XTENSA_OLD
#if XCHAL_HAVE_MMU
#define ELF_MAXPAGESIZE (1 << XCHAL_MMU_MIN_PTE_PAGE_SIZE)
#define elf_info_to_howto elf_xtensa_info_to_howto_rela
+#define bfd_elf32_mkobject elf_xtensa_mkobject
+
#define bfd_elf32_bfd_merge_private_bfd_data elf_xtensa_merge_private_bfd_data
#define bfd_elf32_new_section_hook elf_xtensa_new_section_hook
#define bfd_elf32_bfd_print_private_bfd_data elf_xtensa_print_private_bfd_data
#define bfd_elf32_bfd_relax_section elf_xtensa_relax_section
#define bfd_elf32_bfd_reloc_type_lookup elf_xtensa_reloc_type_lookup
+#define bfd_elf32_bfd_reloc_name_lookup \
+ elf_xtensa_reloc_name_lookup
#define bfd_elf32_bfd_set_private_flags elf_xtensa_set_private_flags
+#define bfd_elf32_bfd_link_hash_table_create elf_xtensa_link_hash_table_create
#define elf_backend_adjust_dynamic_symbol elf_xtensa_adjust_dynamic_symbol
#define elf_backend_check_relocs elf_xtensa_check_relocs
#define elf_backend_grok_prstatus elf_xtensa_grok_prstatus
#define elf_backend_grok_psinfo elf_xtensa_grok_psinfo
#define elf_backend_hide_symbol elf_xtensa_hide_symbol
-#define elf_backend_modify_segment_map elf_xtensa_modify_segment_map
#define elf_backend_object_p elf_xtensa_object_p
#define elf_backend_reloc_type_class elf_xtensa_reloc_type_class
#define elf_backend_relocate_section elf_xtensa_relocate_section
#define elf_backend_size_dynamic_sections elf_xtensa_size_dynamic_sections
+#define elf_backend_always_size_sections elf_xtensa_always_size_sections
+#define elf_backend_omit_section_dynsym \
+ ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
#define elf_backend_special_sections elf_xtensa_special_sections
+#define elf_backend_action_discarded elf_xtensa_action_discarded
+#define elf_backend_copy_indirect_symbol elf_xtensa_copy_indirect_symbol
#include "elf32-target.h"
projects / deliverable / binutils-gdb.git / blobdiff