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| author | mengqinggang <mengqinggang@loongson.cn> | 2023-06-25 17:47:42 +0800 |
|---|---|---|
| committer | liuzhensong <liuzhensong@loongson.cn> | 2023-06-28 16:14:35 +0800 |
| commit | be1ebb6710a8f707bd4b0eecbd00f4f4964050e5 (patch) | |
| tree | 413bfa848b9cd768137c124d640890f63daf6fab /bfd | |
| parent | 69933be89fe5002d2d541ecf2145d5ccac19bbac (diff) | |
| download | gdb-be1ebb6710a8f707bd4b0eecbd00f4f4964050e5.zip gdb-be1ebb6710a8f707bd4b0eecbd00f4f4964050e5.tar.gz gdb-be1ebb6710a8f707bd4b0eecbd00f4f4964050e5.tar.bz2 | |
LoongArch: Add R_LARCH_64_PCREL relocation support
Gas defaults to emit R_LARCH_ADD64/R_LARCH_SUB64 unless explcitly declared
to emit R_LARCH_64_PCREL.
The LoongArch ABI at here:
https://github.com/loongson/la-abi-specs/blob/release/la-abi.adoc
bfd/ChangeLog:
* bfd-in2.h (not): Add R_LARCH_64_PCREL
* elfnn-loongarch.c (perform_relocation): Likewise.
* elfxx-loongarch.c: Likewise.
* libbfd.h: Likewise.
* reloc.c: Likewise.
gas/ChangeLog:
* config/tc-loongarch.c (loongarch_args_parser_can_match_arg_helper):
(md_apply_fix): Add R_LARCH_64_PCREL.
* testsuite/gas/loongarch/64_pcrel.d: New test.
* testsuite/gas/loongarch/64_pcrel.s: New test.
include/ChangeLog:
* elf/loongarch.h (RELOC_NUMBER): Add R_LARCH_64_PCREL.
ld/ChangeLog:
* testsuite/ld-loongarch-elf/ld-loongarch-elf.exp: Add test.
* testsuite/ld-loongarch-elf/64_pcrel.d: New test.
* testsuite/ld-loongarch-elf/64_pcrel.s: New test.
Diffstat (limited to 'bfd')
| -rw-r--r-- | bfd/bfd-in2.h | 1 | ||||
| -rw-r--r-- | bfd/elfnn-loongarch.c | 1 | ||||
| -rw-r--r-- | bfd/elfxx-loongarch.c | 18 | ||||
| -rw-r--r-- | bfd/libbfd.h | 1 | ||||
| -rw-r--r-- | bfd/reloc.c | 3 |
5 files changed, 24 insertions, 0 deletions
diff --git a/bfd/bfd-in2.h b/bfd/bfd-in2.h index 7399fb0..c4fa0c1 100644 --- a/bfd/bfd-in2.h +++ b/bfd/bfd-in2.h @@ -7343,6 +7343,7 @@ assembler and not (currently) written to any object files. */ BFD_RELOC_LARCH_SUB6, BFD_RELOC_LARCH_ADD_ULEB128, BFD_RELOC_LARCH_SUB_ULEB128, + BFD_RELOC_LARCH_64_PCREL, BFD_RELOC_UNUSED }; typedef enum bfd_reloc_code_real bfd_reloc_code_real_type; diff --git a/bfd/elfnn-loongarch.c b/bfd/elfnn-loongarch.c index b16066c..d3d8419 100644 --- a/bfd/elfnn-loongarch.c +++ b/bfd/elfnn-loongarch.c @@ -2070,6 +2070,7 @@ perform_relocation (const Elf_Internal_Rela *rel, asection *input_section, /* For eh_frame and debug info. */ case R_LARCH_32_PCREL: + case R_LARCH_64_PCREL: { value -= sec_addr (input_section) + rel->r_offset; value += rel->r_addend; diff --git a/bfd/elfxx-loongarch.c b/bfd/elfxx-loongarch.c index cb312c4..da440d5 100644 --- a/bfd/elfxx-loongarch.c +++ b/bfd/elfxx-loongarch.c @@ -1535,6 +1535,24 @@ static loongarch_reloc_howto_type loongarch_howto_table[] = NULL, /* adjust_reloc_bits. */ NULL), /* larch_reloc_type_name. */ + /* 64-bit PC relative. */ + LOONGARCH_HOWTO (R_LARCH_64_PCREL, /* type (109). */ + 0, /* rightshift. */ + 8, /* size. */ + 64, /* bitsize. */ + true, /* pc_relative. */ + 0, /* bitpos. */ + complain_overflow_signed, /* complain_on_overflow. */ + bfd_elf_generic_reloc, /* special_function. */ + "R_LARCH_64_PCREL", /* name. */ + false, /* partial_inplace. */ + 0, /* src_mask */ + 0xffffffffffffffff, /* dst_mask */ + false, /* pcrel_offset */ + BFD_RELOC_LARCH_64_PCREL, /* bfd_reloc_code_real_type */ + NULL, /* adjust_reloc_bits */ + NULL), /* larch_reloc_type_name */ + }; reloc_howto_type * diff --git a/bfd/libbfd.h b/bfd/libbfd.h index 55aa8f9..d4fb310 100644 --- a/bfd/libbfd.h +++ b/bfd/libbfd.h @@ -3524,6 +3524,7 @@ static const char *const bfd_reloc_code_real_names[] = { "@@uninitialized@@", "BFD_RELOC_LARCH_SUB6", "BFD_RELOC_LARCH_ADD_ULEB128", "BFD_RELOC_LARCH_SUB_ULEB128", + "BFD_RELOC_LARCH_64_PCREL", "@@overflow: BFD_RELOC_UNUSED@@", }; #endif diff --git a/bfd/reloc.c b/bfd/reloc.c index b38cb32..fbc67ac 100644 --- a/bfd/reloc.c +++ b/bfd/reloc.c @@ -8153,6 +8153,9 @@ ENUMX ENUMX BFD_RELOC_LARCH_SUB_ULEB128 +ENUMX + BFD_RELOC_LARCH_64_PCREL + ENUMDOC LARCH relocations. |