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author | mengqinggang <mengqinggang@loongson.cn> | 2022-12-01 16:06:42 +0800 |
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committer | liuzhensong <liuzhensong@loongson.cn> | 2023-05-30 19:56:45 +0800 |
commit | 762444623565211ab2b6ea1fd1a19f8dd7f98888 (patch) | |
tree | 2f44798943a8f7a1eba1d6301596eae1d12703a9 /binutils/readelf.c | |
parent | 7ad9de1188609dee11a5c196869fca62da8154a3 (diff) | |
download | binutils-762444623565211ab2b6ea1fd1a19f8dd7f98888.zip binutils-762444623565211ab2b6ea1fd1a19f8dd7f98888.tar.gz binutils-762444623565211ab2b6ea1fd1a19f8dd7f98888.tar.bz2 |
LoongArch: binutils: Add support for linker relaxation.
Add support for relocs related to relax to readelf.
binutils/ChangeLog:
* readelf.c (target_specific_reloc_handling): Handle ULEB128 reloc.
(is_32bit_inplace_add_reloc): Handle new reloc.
(is_32bit_inplace_sub_reloc): Likewise.
(is_64bit_inplace_add_reloc): Likewise.
(is_64bit_inplace_sub_reloc): Likewise.
(is_16bit_inplace_add_reloc): Likewise.
(is_16bit_inplace_sub_reloc): Likewise.
(is_8bit_inplace_add_reloc): Likewise.
(is_8bit_inplace_sub_reloc): Likewise.
(is_6bit_inplace_sub_reloc): Likewise.
(is_6bit_inplace_add_reloc): New function.
(apply_relocations): Handle new reloc.
* testsuite/binutils-all/readelf.exp: Add -mno-relax option
for LoongArch.
Diffstat (limited to 'binutils/readelf.c')
-rw-r--r-- | binutils/readelf.c | 84 |
1 files changed, 82 insertions, 2 deletions
diff --git a/binutils/readelf.c b/binutils/readelf.c index d8ad58b..7292dd0 100644 --- a/binutils/readelf.c +++ b/binutils/readelf.c @@ -14008,6 +14008,51 @@ target_specific_reloc_handling (Filedata *filedata, switch (filedata->file_header.e_machine) { + case EM_LOONGARCH: + { + switch (reloc_type) + { + /* For .uleb128 .LFE1-.LFB1, loongarch write 0 to object file + at assembly time. */ + case 107: /* R_LARCH_ADD_ULEB128. */ + case 108: /* R_LARCH_SUB_ULEB128. */ + { + uint64_t value; + unsigned int reloc_size = 0; + int leb_ret = 0; + + value = read_leb128 (start + reloc->r_offset, end, false, + &reloc_size, &leb_ret); + if (leb_ret != 0 || reloc_size == 0 || reloc_size > 8) + error (_("LoongArch ULEB128 field at 0x%lx contains invalid " + "ULEB128 value\n"), + (long) reloc->r_offset); + + if (107 == reloc_type) + value += (reloc->r_addend + symtab[sym_index].st_value); + else if (108 == reloc_type) + value -= (reloc->r_addend + symtab[sym_index].st_value); + + /* Write uleb128 value to p. */ + bfd_byte c; + bfd_byte *p = start + reloc->r_offset; + do + { + c = value & 0x7f; + if (reloc_size > 1) + c |= 0x80; + *(p++) = c; + value >>= 7; + reloc_size--; + } + while (reloc_size); + + return true; + } + } + break; + } + case EM_MSP430: case EM_MSP430_OLD: { @@ -14734,6 +14779,8 @@ is_32bit_inplace_add_reloc (Filedata * filedata, unsigned int reloc_type) /* Please keep this table alpha-sorted for ease of visual lookup. */ switch (filedata->file_header.e_machine) { + case EM_LOONGARCH: + return reloc_type == 50; /* R_LARCH_ADD32. */ case EM_RISCV: return reloc_type == 35; /* R_RISCV_ADD32. */ default: @@ -14750,6 +14797,8 @@ is_32bit_inplace_sub_reloc (Filedata * filedata, unsigned int reloc_type) /* Please keep this table alpha-sorted for ease of visual lookup. */ switch (filedata->file_header.e_machine) { + case EM_LOONGARCH: + return reloc_type == 55; /* R_LARCH_SUB32. */ case EM_RISCV: return reloc_type == 39; /* R_RISCV_SUB32. */ default: @@ -14766,6 +14815,8 @@ is_64bit_inplace_add_reloc (Filedata * filedata, unsigned int reloc_type) /* Please keep this table alpha-sorted for ease of visual lookup. */ switch (filedata->file_header.e_machine) { + case EM_LOONGARCH: + return reloc_type == 51; /* R_LARCH_ADD64. */ case EM_RISCV: return reloc_type == 36; /* R_RISCV_ADD64. */ default: @@ -14782,6 +14833,8 @@ is_64bit_inplace_sub_reloc (Filedata * filedata, unsigned int reloc_type) /* Please keep this table alpha-sorted for ease of visual lookup. */ switch (filedata->file_header.e_machine) { + case EM_LOONGARCH: + return reloc_type == 56; /* R_LARCH_SUB64. */ case EM_RISCV: return reloc_type == 40; /* R_RISCV_SUB64. */ default: @@ -14798,6 +14851,8 @@ is_16bit_inplace_add_reloc (Filedata * filedata, unsigned int reloc_type) /* Please keep this table alpha-sorted for ease of visual lookup. */ switch (filedata->file_header.e_machine) { + case EM_LOONGARCH: + return reloc_type == 48; /* R_LARCH_ADD16. */ case EM_RISCV: return reloc_type == 34; /* R_RISCV_ADD16. */ default: @@ -14814,6 +14869,8 @@ is_16bit_inplace_sub_reloc (Filedata * filedata, unsigned int reloc_type) /* Please keep this table alpha-sorted for ease of visual lookup. */ switch (filedata->file_header.e_machine) { + case EM_LOONGARCH: + return reloc_type == 53; /* R_LARCH_SUB16. */ case EM_RISCV: return reloc_type == 38; /* R_RISCV_SUB16. */ default: @@ -14830,6 +14887,8 @@ is_8bit_inplace_add_reloc (Filedata * filedata, unsigned int reloc_type) /* Please keep this table alpha-sorted for ease of visual lookup. */ switch (filedata->file_header.e_machine) { + case EM_LOONGARCH: + return reloc_type == 47; /* R_LARCH_ADD8. */ case EM_RISCV: return reloc_type == 33; /* R_RISCV_ADD8. */ default: @@ -14846,6 +14905,8 @@ is_8bit_inplace_sub_reloc (Filedata * filedata, unsigned int reloc_type) /* Please keep this table alpha-sorted for ease of visual lookup. */ switch (filedata->file_header.e_machine) { + case EM_LOONGARCH: + return reloc_type == 52; /* R_LARCH_SUB8. */ case EM_RISCV: return reloc_type == 37; /* R_RISCV_SUB8. */ default: @@ -14854,6 +14915,21 @@ is_8bit_inplace_sub_reloc (Filedata * filedata, unsigned int reloc_type) } /* Like is_32bit_abs_reloc except that it returns TRUE iff RELOC_TYPE is + a 6-bit inplace add RELA relocation used in DWARF debug sections. */ + +static bool +is_6bit_inplace_add_reloc (Filedata * filedata, unsigned int reloc_type) +{ + switch (filedata->file_header.e_machine) + { + case EM_LOONGARCH: + return reloc_type == 105; /* R_LARCH_ADD6. */ + default: + return false; + } +} + +/* Like is_32bit_abs_reloc except that it returns TRUE iff RELOC_TYPE is a 6-bit inplace sub RELA relocation used in DWARF debug sections. */ static bool @@ -14861,6 +14937,8 @@ is_6bit_inplace_sub_reloc (Filedata * filedata, unsigned int reloc_type) { switch (filedata->file_header.e_machine) { + case EM_LOONGARCH: + return reloc_type == 106; /* R_LARCH_SUB6. */ case EM_RISCV: return reloc_type == 52; /* R_RISCV_SUB6. */ default: @@ -15108,7 +15186,8 @@ apply_relocations (Filedata *filedata, reloc_inplace = true; } else if ((reloc_subtract = is_6bit_inplace_sub_reloc (filedata, - reloc_type))) + reloc_type)) + || is_6bit_inplace_add_reloc (filedata, reloc_type)) { reloc_size = 1; reloc_inplace = true; @@ -15200,7 +15279,8 @@ apply_relocations (Filedata *filedata, reloc_size); } else if (is_6bit_abs_reloc (filedata, reloc_type) - || is_6bit_inplace_sub_reloc (filedata, reloc_type)) + || is_6bit_inplace_sub_reloc (filedata, reloc_type) + || is_6bit_inplace_add_reloc (filedata, reloc_type)) { if (reloc_subtract) addend -= sym->st_value; 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