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| author | Kuan-Lin Chen <rufus@andestech.com> | 2017-06-08 11:54:14 -0700 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@dabbelt.com> | 2017-06-26 18:26:40 -0700 |
| commit | a6cbf936e3dce68114d28cdf60d510a3f78a6d40 (patch) | |
| tree | dc4fe23922098e657bdab1a1f749a36e6bf27e9c /bfd/elfxx-riscv.c | |
| parent | 7211ae501eb0de1044983f2dfb00091a58fbd66c (diff) | |
| download | gdb-a6cbf936e3dce68114d28cdf60d510a3f78a6d40.zip gdb-a6cbf936e3dce68114d28cdf60d510a3f78a6d40.tar.gz gdb-a6cbf936e3dce68114d28cdf60d510a3f78a6d40.tar.bz2 | |
RISC-V: Use pc-relative relocation for FDE initial location
The symbol address in .eh_frame may be adjusted in
_bfd_elf_discard_section_eh_frame, and the content of .eh_frame will be
adjusted in _bfd_elf_write_section_eh_frame. Therefore, we cannot insert
a relocation whose addend symbol is in .eh_frame. Othrewise, the value
may be adjusted twice.
bfd/ChangeLog
2017-06-26 Kuan-Lin Chen <rufus@andestech.com>
* elfnn-riscv.c (perform_relocation): Support the new
R_RISCV_32_PCREL relocation.
(riscv_elf_relocate_section): Likewise.
* elfxx-riscv.c (howto_table): Likewise.
(riscv_reloc_map): Likewise.
* bfd-in2.h (BFD_RELOC_RISCV_32_PCREL): New relocation.
* libbfd.h: Regenerate.
gas/ChangeLog
2017-06-26 Kuan-Lin Chen <rufus@andestech.com>
* config/tc-riscv.c (md_apply_fix) [BFD_RELOC_32]: Convert to a
R_RISCV_32_PCREL relocation.
include/ChangeLog
2017-06-26 Kuan-Lin Chen <rufus@andestech.com>
* elf/riscv.h (R_RISCV_32_PCREL): New.
Diffstat (limited to 'bfd/elfxx-riscv.c')
| -rw-r--r-- | bfd/elfxx-riscv.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/bfd/elfxx-riscv.c b/bfd/elfxx-riscv.c index 6936722..5fa98f3 100644 --- a/bfd/elfxx-riscv.c +++ b/bfd/elfxx-riscv.c @@ -833,6 +833,21 @@ static reloc_howto_type howto_table[] = 0, /* src_mask */ MINUS_ONE, /* dst_mask */ FALSE), /* pcrel_offset */ + + /* 32-bit PC relative. */ + HOWTO (R_RISCV_32_PCREL, /* type */ + 0, /* rightshift */ + 2, /* size */ + 32, /* bitsize */ + TRUE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_dont, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* special_function */ + "R_RISCV_32_PCREL", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + MINUS_ONE, /* dst_mask */ + FALSE), /* pcrel_offset */ }; /* A mapping from BFD reloc types to RISC-V ELF reloc types. */ @@ -894,6 +909,7 @@ static const struct elf_reloc_map riscv_reloc_map[] = { BFD_RELOC_RISCV_SET8, R_RISCV_SET8 }, { BFD_RELOC_RISCV_SET16, R_RISCV_SET16 }, { BFD_RELOC_RISCV_SET32, R_RISCV_SET32 }, + { BFD_RELOC_RISCV_32_PCREL, R_RISCV_32_PCREL }, }; /* Given a BFD reloc type, return a howto structure. */ |