diff options
Diffstat (limited to 'bfd/elf32-microblaze.c')
-rw-r--r-- | bfd/elf32-microblaze.c | 134 |
1 files changed, 92 insertions, 42 deletions
diff --git a/bfd/elf32-microblaze.c b/bfd/elf32-microblaze.c index c0004248a2..be2de13425 100644 --- a/bfd/elf32-microblaze.c +++ b/bfd/elf32-microblaze.c @@ -702,6 +702,7 @@ microblaze_elf_relocate_section (bfd *output_bfd, Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd); Elf_Internal_Rela *rel, *relend; + int endian = (bfd_little_endian (output_bfd)) ? 0 : 2; /* Assume success. */ bfd_boolean ret = TRUE; asection *sreloc; @@ -933,9 +934,9 @@ microblaze_elf_relocate_section (bfd *output_bfd, + offset + INST_WORD_SIZE); relocation += addend; bfd_put_16 (input_bfd, (relocation >> 16) & 0xffff, - contents + offset + 2); + contents + offset + endian); bfd_put_16 (input_bfd, relocation & 0xffff, - contents + offset + 2 + INST_WORD_SIZE); + contents + offset + endian + INST_WORD_SIZE); break; case (int) R_MICROBLAZE_PLT_64: @@ -952,9 +953,9 @@ microblaze_elf_relocate_section (bfd *output_bfd, + input_section->output_offset + offset + INST_WORD_SIZE); bfd_put_16 (input_bfd, (immediate >> 16) & 0xffff, - contents + offset + 2); + contents + offset + endian); bfd_put_16 (input_bfd, immediate & 0xffff, - contents + offset + 2 + INST_WORD_SIZE); + contents + offset + endian + INST_WORD_SIZE); } else { @@ -963,9 +964,9 @@ microblaze_elf_relocate_section (bfd *output_bfd, + offset + INST_WORD_SIZE); immediate = relocation; bfd_put_16 (input_bfd, (immediate >> 16) & 0xffff, - contents + offset + 2); + contents + offset + endian); bfd_put_16 (input_bfd, immediate & 0xffff, - contents + offset + 2 + INST_WORD_SIZE); + contents + offset + endian + INST_WORD_SIZE); } break; } @@ -1031,9 +1032,9 @@ microblaze_elf_relocate_section (bfd *output_bfd, abort (); /* ??? */ } bfd_put_16 (input_bfd, (relocation >> 16) & 0xffff, - contents + offset + 2); + contents + offset + endian); bfd_put_16 (input_bfd, relocation & 0xffff, - contents + offset + 2 + INST_WORD_SIZE); + contents + offset + endian + INST_WORD_SIZE); break; } @@ -1048,8 +1049,8 @@ microblaze_elf_relocate_section (bfd *output_bfd, immediate = relocation; lo = immediate & 0x0000ffff; high = (immediate >> 16) & 0x0000ffff; - bfd_put_16 (input_bfd, high, contents + offset + 2); - bfd_put_16 (input_bfd, lo, contents + offset + INST_WORD_SIZE + 2); + bfd_put_16 (input_bfd, high, contents + offset + endian); + bfd_put_16 (input_bfd, lo, contents + offset + INST_WORD_SIZE + endian); break; } @@ -1082,9 +1083,9 @@ microblaze_elf_relocate_section (bfd *output_bfd, + input_section->output_offset + offset + INST_WORD_SIZE); bfd_put_16 (input_bfd, (relocation >> 16) & 0xffff, - contents + offset + 2); + contents + offset + endian); bfd_put_16 (input_bfd, relocation & 0xffff, - contents + offset + 2 + INST_WORD_SIZE); + contents + offset + endian + INST_WORD_SIZE); } break; } @@ -1176,9 +1177,9 @@ microblaze_elf_relocate_section (bfd *output_bfd, + input_section->output_offset + offset + INST_WORD_SIZE); bfd_put_16 (input_bfd, (relocation >> 16) & 0xffff, - contents + offset + 2); + contents + offset + endian); bfd_put_16 (input_bfd, relocation & 0xffff, - contents + offset + 2 + INST_WORD_SIZE); + contents + offset + endian + INST_WORD_SIZE); } break; } @@ -1253,6 +1254,21 @@ microblaze_elf_relocate_section (bfd *output_bfd, return ret; } + +/* Merge backend specific data from an object file to the output + object file when linking. + + Note: We only use this hook to catch endian mismatches. */ +static bfd_boolean +microblaze_elf_merge_private_bfd_data (bfd * ibfd, bfd * obfd) +{ + /* Check if we have the same endianess. */ + if (! _bfd_generic_verify_endian_match (ibfd, obfd)) + return FALSE; + + return TRUE; +} + /* Calculate fixup value for reference. */ @@ -1275,6 +1291,36 @@ calc_fixup (bfd_vma addr, asection *sec) return fixup; } +/* Read-modify-write into the bfd, an immediate value into appropriate fields of + a 32-bit instruction. */ +static void +microblaze_bfd_write_imm_value_32 (bfd *abfd, bfd_byte *bfd_addr, bfd_vma val) +{ + unsigned long instr = bfd_get_32 (abfd, bfd_addr); + instr &= ~0x0000ffff; + instr |= (val & 0x0000ffff); + bfd_put_32 (abfd, instr, bfd_addr); +} + +/* Read-modify-write into the bfd, an immediate value into appropriate fields of + two consecutive 32-bit instructions. */ +static void +microblaze_bfd_write_imm_value_64 (bfd *abfd, bfd_byte *bfd_addr, bfd_vma val) +{ + unsigned long instr_hi; + unsigned long instr_lo; + + instr_hi = bfd_get_32 (abfd, bfd_addr); + instr_hi &= ~0x0000ffff; + instr_hi |= ((val >> 16) & 0x0000ffff); + bfd_put_32 (abfd, instr_hi, bfd_addr); + + instr_lo = bfd_get_32 (abfd, bfd_addr + INST_WORD_SIZE); + instr_lo &= ~0x0000ffff; + instr_lo |= (val & 0x0000ffff); + bfd_put_32 (abfd, instr_lo, bfd_addr + INST_WORD_SIZE); +} + static bfd_boolean microblaze_elf_relax_section (bfd *abfd, asection *sec, @@ -1305,7 +1351,8 @@ microblaze_elf_relax_section (bfd *abfd, /* Only do this for a text section. */ if (link_info->relocatable || (sec->flags & SEC_RELOC) == 0 - || (sec->reloc_count == 0)) + || (sec->reloc_count == 0) + || (sec->flags & SEC_CODE) == 0) return TRUE; BFD_ASSERT ((sec->size > 0) || (sec->rawsize > 0)); @@ -1485,7 +1532,8 @@ microblaze_elf_relax_section (bfd *abfd, efix = calc_fixup (target_address, sec); irel->r_addend -= (efix - sfix); /* Should use HOWTO. */ - bfd_put_16 (abfd, irel->r_addend, contents + irel->r_offset + 2); + microblaze_bfd_write_imm_value_32 (abfd, contents + irel->r_offset, + irel->r_addend); } break; case R_MICROBLAZE_64_NONE: @@ -1498,8 +1546,8 @@ microblaze_elf_relax_section (bfd *abfd, sfix = calc_fixup (irel->r_offset + INST_WORD_SIZE, sec); efix = calc_fixup (target_address, sec); irel->r_addend -= (efix - sfix); - bfd_put_16 (abfd, irel->r_addend, contents + irel->r_offset - + INST_WORD_SIZE + 2); + microblaze_bfd_write_imm_value_32 (abfd, contents + irel->r_offset + + INST_WORD_SIZE, irel->r_addend); } break; } @@ -1627,13 +1675,14 @@ microblaze_elf_relax_section (bfd *abfd, } } - immediate = (unsigned short) bfd_get_16 (abfd, ocontents + - irelscan->r_offset + 2); + unsigned long instr = bfd_get_32 (abfd, ocontents + irelscan->r_offset); + immediate = instr & 0x0000ffff; target_address = immediate; offset = calc_fixup (target_address, sec); immediate -= offset; irelscan->r_addend -= offset; - bfd_put_16 (abfd, immediate, ocontents + irelscan->r_offset + 2); + microblaze_bfd_write_imm_value_32 (abfd, ocontents + irelscan->r_offset, + irelscan->r_addend); } } @@ -1669,15 +1718,13 @@ microblaze_elf_relax_section (bfd *abfd, elf_section_data (o)->this_hdr.contents = ocontents; } } - immediate = (unsigned short) (bfd_get_16 (abfd, ocontents - + irelscan->r_offset - + 2) << 16) - & 0xffff0000; - immediate += (unsigned short) (bfd_get_16 (abfd, ocontents - + irelscan->r_offset - + INST_WORD_SIZE + 2)) - & 0x0000ffff; - + unsigned long instr_hi = bfd_get_32 (abfd, ocontents + + irelscan->r_offset); + unsigned long instr_lo = bfd_get_32 (abfd, ocontents + + irelscan->r_offset + + INST_WORD_SIZE); + immediate = (instr_hi & 0x0000ffff) << 16; + immediate |= (instr_lo & 0x0000ffff); offset = calc_fixup (irelscan->r_addend, sec); immediate -= offset; irelscan->r_addend -= offset; @@ -1715,22 +1762,19 @@ microblaze_elf_relax_section (bfd *abfd, elf_section_data (o)->this_hdr.contents = ocontents; } } - - immediate = (unsigned short) - (bfd_get_16 (abfd, ocontents + irelscan->r_offset + 2) << 16) - & 0xffff0000; - immediate += (unsigned short) - (bfd_get_16 (abfd, ocontents + irelscan->r_offset - + INST_WORD_SIZE + 2)) - & 0x0000ffff; + unsigned long instr_hi = bfd_get_32 (abfd, ocontents + + irelscan->r_offset); + unsigned long instr_lo = bfd_get_32 (abfd, ocontents + + irelscan->r_offset + + INST_WORD_SIZE); + immediate = (instr_hi & 0x0000ffff) << 16; + immediate |= (instr_lo & 0x0000ffff); target_address = immediate; offset = calc_fixup (target_address, sec); immediate -= offset; irelscan->r_addend -= offset; - bfd_put_16 (abfd, ((immediate >> 16) & 0x0000ffff), - ocontents + irelscan->r_offset + 2); - bfd_put_16 (abfd, (immediate & 0x0000ffff), - ocontents + irelscan->r_offset + INST_WORD_SIZE + 2); + microblaze_bfd_write_imm_value_64 (abfd, ocontents + + irelscan->r_offset, immediate); } } } @@ -1800,9 +1844,12 @@ microblaze_elf_relax_section (bfd *abfd, if (sec->relax_count == 0) { + *again = FALSE; free (sec->relax); sec->relax = NULL; } + else + *again = TRUE; return TRUE; error_return: @@ -3016,6 +3063,8 @@ microblaze_elf_add_symbol_hook (bfd *abfd, return TRUE; } +#define TARGET_LITTLE_SYM bfd_elf32_microblazeel_vec +#define TARGET_LITTLE_NAME "elf32-microblazeel" #define TARGET_BIG_SYM bfd_elf32_microblaze_vec #define TARGET_BIG_NAME "elf32-microblaze" @@ -3032,6 +3081,7 @@ microblaze_elf_add_symbol_hook (bfd *abfd, #define bfd_elf32_bfd_is_local_label_name microblaze_elf_is_local_label_name #define elf_backend_relocate_section microblaze_elf_relocate_section #define bfd_elf32_bfd_relax_section microblaze_elf_relax_section +#define bfd_elf32_bfd_merge_private_bfd_data microblaze_elf_merge_private_bfd_data #define bfd_elf32_bfd_reloc_name_lookup microblaze_elf_reloc_name_lookup #define elf_backend_gc_mark_hook microblaze_elf_gc_mark_hook |