/* Freescale S12Z-specific support for 32-bit ELF
- Copyright (C) 1999-2018 Free Software Foundation, Inc.
+ Copyright (C) 1999-2020 Free Software Foundation, Inc.
(Heavily copied from the D10V port by Martin Hunt (hunt@cygnus.com))
This file is part of BFD, the Binary File Descriptor library.
#include "elf/s12z.h"
+/* All users of this file have bfd_octets_per_byte (abfd, sec) == 1. */
+#define OCTETS_PER_BYTE(ABFD, SEC) 1
+
/* Relocation functions. */
static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup
(bfd *, bfd_reloc_code_real_type);
static bfd_boolean s12z_info_to_howto_rel
(bfd *, arelent *, Elf_Internal_Rela *);
+static bfd_reloc_status_type
+opru18_reloc (bfd *abfd, arelent *reloc_entry, struct bfd_symbol *symbol,
+ void *data, asection *input_section ATTRIBUTE_UNUSED,
+ bfd *output ATTRIBUTE_UNUSED, char **msg ATTRIBUTE_UNUSED)
+{
+ /* This reloc is used for 18 bit General Operand Addressing Postbyte in the
+ INST opru18 form. This is an 18 bit reloc, but the most significant bit
+ is shifted one place to the left of where it would normally be. See
+ Appendix A.4 of the S12Z reference manual. */
+
+ bfd_size_type octets = (reloc_entry->address
+ * OCTETS_PER_BYTE (abfd, input_section));
+ bfd_vma result = bfd_get_24 (abfd, (unsigned char *) data + octets);
+ bfd_vma val = bfd_asymbol_value (symbol);
+
+ /* Keep the wanted bits and discard the rest. */
+ result &= 0xFA0000;
+
+ val += symbol->section->output_section->vma;
+ val += symbol->section->output_offset;
+
+ /* The lowest 17 bits are copied verbatim. */
+ result |= val & 0x1FFFF;
+
+ /* The 18th bit is put into the 19th position. */
+ result |= (val & 0x020000) << 1;
+
+ bfd_put_24 (abfd, result, (unsigned char *) data + octets);
+
+ return bfd_reloc_ok;
+}
+
+
static bfd_reloc_status_type
shift_addend_reloc (bfd *abfd, arelent *reloc_entry, struct bfd_symbol *symbol ATTRIBUTE_UNUSED,
void *data ATTRIBUTE_UNUSED, asection *input_section ATTRIBUTE_UNUSED,
bfd_elf_generic_reloc, /* special_function */
"R_S12Z_EXT24", /* name */
FALSE, /* partial_inplace */
- 0x00ffffff, /* src_mask */
+ 0x00000000, /* src_mask */
0x00ffffff, /* dst_mask */
FALSE), /* pcrel_offset */
- /* The purpose of this reloc is not known */
- HOWTO (R_S12Z_UKNWN_3, /* type */
+ /* An 18 bit absolute relocation */
+ HOWTO (R_S12Z_EXT18, /* type */
0, /* rightshift */
- 3, /* size (0 = byte, 1 = short, 2 = long) */
- 0, /* bitsize */
+ 5, /* size (0 = byte, 1 = short, 2 = long) */
+ 18, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
- complain_overflow_dont,/* complain_on_overflow */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ opru18_reloc, /* special_function */
+ "R_S12Z_EXT18", /* name */
+ FALSE, /* partial_inplace */
+ 0x00000000, /* src_mask */
+ 0x0005ffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* A 32 bit absolute relocation. This kind of relocation is
+ schizophrenic - Although they appear in sections named .rela.debug.*
+ in some sections they behave as RELA relocs, but in others they have
+ an added of zero and behave as REL.
+
+ It is not recommended that new code emits this reloc. It is here
+ only to support existing elf files generated by third party
+ applications. */
+
+ HOWTO (R_S12Z_CW32, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
- "R_S12Z_UKNWN_3", /* name */
+ "R_S12Z_CW32", /* name */
FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0, /* dst_mask */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* A 32 bit absolute relocation */
bfd_elf_generic_reloc, /* special_function */
"R_S12Z_EXT32", /* name */
FALSE, /* partial_inplace */
- 0xffffffff, /* src_mask */
+ 0x00000000, /* src_mask */
0xffffffff, /* dst_mask */
FALSE), /* pcrel_offset */
};
static const struct s12z_reloc_map s12z_reloc_map[] =
{
- /* bfd reloc val */ /* elf reloc val */
- {BFD_RELOC_NONE, R_S12Z_NONE},
- {BFD_RELOC_32, R_S12Z_EXT32},
- {BFD_RELOC_24, R_S12Z_EXT24},
- {BFD_RELOC_16_PCREL, R_S12Z_PCREL_7_15}
+ /* bfd reloc val */ /* elf reloc val */
+ {BFD_RELOC_NONE, R_S12Z_NONE},
+ {BFD_RELOC_32, R_S12Z_EXT32},
+ {BFD_RELOC_24, R_S12Z_EXT24},
+ {BFD_RELOC_16_PCREL, R_S12Z_PCREL_7_15},
+ {BFD_RELOC_S12Z_OPR, R_S12Z_OPR}
};
static reloc_howto_type *
{
unsigned int i;
- printf ("%s:%d Looking up %s\n", __FILE__, __LINE__, r_name);
-
for (i = 0;
i < (sizeof (elf_s12z_howto_table)
/ sizeof (elf_s12z_howto_table[0]));
}
#define ELF_ARCH bfd_arch_s12z
-#define ELF_TARGET_ID 0
#define ELF_MACHINE_CODE EM_S12Z
#define ELF_MAXPAGESIZE 0x1000
#define elf_info_to_howto NULL
#define elf_info_to_howto_rel s12z_info_to_howto_rel
#define elf_backend_object_p s12z_elf_set_mach_from_flags
-#define elf_backend_final_write_processing NULL
-#define elf_backend_can_gc_sections 1
#include "elf32-target.h"
projects / deliverable / binutils-gdb.git / blobdiff