diff options
| 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 | |
| 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')
| -rw-r--r-- | bfd/ChangeLog | 10 | ||||
| -rw-r--r-- | bfd/bfd-in2.h | 1 | ||||
| -rw-r--r-- | bfd/elfnn-riscv.c | 2 | ||||
| -rw-r--r-- | bfd/elfxx-riscv.c | 16 | ||||
| -rw-r--r-- | bfd/libbfd.h | 1 | ||||
| -rw-r--r-- | bfd/reloc.c | 2 |
6 files changed, 32 insertions, 0 deletions
diff --git a/bfd/ChangeLog b/bfd/ChangeLog index f440f8f..3cab920 100644 --- a/bfd/ChangeLog +++ b/bfd/ChangeLog @@ -1,3 +1,13 @@ +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. + 2017-06-27 Alan Modra <amodra@gmail.com> PR binutils/21665 diff --git a/bfd/bfd-in2.h b/bfd/bfd-in2.h index 45f665b..8c312e3 100644 --- a/bfd/bfd-in2.h +++ b/bfd/bfd-in2.h @@ -4771,6 +4771,7 @@ number for the SBIC, SBIS, SBI and CBI instructions */ BFD_RELOC_RISCV_SET8, BFD_RELOC_RISCV_SET16, BFD_RELOC_RISCV_SET32, + BFD_RELOC_RISCV_32_PCREL, /* Renesas RL78 Relocations. */ BFD_RELOC_RL78_NEG8, diff --git a/bfd/elfnn-riscv.c b/bfd/elfnn-riscv.c index 4e3cf55..455f2ff 100644 --- a/bfd/elfnn-riscv.c +++ b/bfd/elfnn-riscv.c @@ -1566,6 +1566,7 @@ perform_relocation (const reloc_howto_type *howto, case R_RISCV_SET8: case R_RISCV_SET16: case R_RISCV_SET32: + case R_RISCV_32_PCREL: case R_RISCV_TLS_DTPREL32: case R_RISCV_TLS_DTPREL64: break; @@ -1849,6 +1850,7 @@ riscv_elf_relocate_section (bfd *output_bfd, case R_RISCV_SET8: case R_RISCV_SET16: case R_RISCV_SET32: + case R_RISCV_32_PCREL: /* These require no special handling beyond perform_relocation. */ break; 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. */ diff --git a/bfd/libbfd.h b/bfd/libbfd.h index 09df3b2..ae9bf76 100644 --- a/bfd/libbfd.h +++ b/bfd/libbfd.h @@ -2215,6 +2215,7 @@ static const char *const bfd_reloc_code_real_names[] = { "@@uninitialized@@", "BFD_RELOC_RISCV_SET8", "BFD_RELOC_RISCV_SET16", "BFD_RELOC_RISCV_SET32", + "BFD_RELOC_RISCV_32_PCREL", "BFD_RELOC_RL78_NEG8", "BFD_RELOC_RL78_NEG16", "BFD_RELOC_RL78_NEG24", diff --git a/bfd/reloc.c b/bfd/reloc.c index 024056f..aa70fa58 100644 --- a/bfd/reloc.c +++ b/bfd/reloc.c @@ -5155,6 +5155,8 @@ ENUMX BFD_RELOC_RISCV_SET16 ENUMX BFD_RELOC_RISCV_SET32 +ENUMX + BFD_RELOC_RISCV_32_PCREL ENUMDOC RISC-V relocations. |