diff options
| author | H.J. Lu <hjl.tools@gmail.com> | 2023-06-09 13:50:22 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2023-12-28 08:47:17 -0800 |
| commit | a533c8df598b5ef99c54a13e2b137c98b34b043c (patch) | |
| tree | cb019f462896604b2b48bb1f40dfe01bc0437051 /bfd/reloc.c | |
| parent | 4a54cb06585f568031dfd291d0fe45979ad75e98 (diff) | |
| download | gdb-a533c8df598b5ef99c54a13e2b137c98b34b043c.zip gdb-a533c8df598b5ef99c54a13e2b137c98b34b043c.tar.gz gdb-a533c8df598b5ef99c54a13e2b137c98b34b043c.tar.bz2 | |
x86-64: Add R_X86_64_CODE_4_GOTTPOFF/R_X86_64_CODE_4_GOTPC32_TLSDESC
For
add name@gottpoff(%rip), %reg
mov name@gottpoff(%rip), %reg
add
# define R_X86_64_CODE_4_GOTTPOFF 44
and for
lea name@tlsdesc(%rip), %reg
add
# define R_X86_64_CODE_4_GOTPC32_TLSDESC 45
if the instruction starts at 4 bytes before the relocation offset.
They are similar to R_X86_64_GOTTPOFF and R_X86_64_GOTPC32_TLSDESC,
respectively. Linker can covert GOTTPOFF to
add $name@tpoff, %reg
mov $name@tpoff, %reg
and GOTPC32_TLSDESC to
mov $name@tpoff, %reg
mov name@gottpoff(%rip), %reg
if the instruction is encoded with the REX2 prefix when possible.
bfd/
* elf64-x86-64.c (x86_64_elf_howto_table): Add
R_X86_64_CODE_4_GOTTPOFF and R_X86_64_CODE_4_GOTPC32_TLSDESC.
(R_X86_64_standard): Updated.
(x86_64_reloc_map): Add BFD_RELOC_X86_64_CODE_4_GOTTPOFF
and BFD_RELOC_X86_64_CODE_4_GOTPC32_TLSDESC.
(elf_x86_64_check_tls_transition): Handle R_X86_64_CODE_4_GOTTPOFF
and R_X86_64_CODE_4_GOTPC32_TLSDESC.
(elf_x86_64_tls_transition): Likewise.
(elf_x86_64_scan_relocs): Likewise.
(elf_x86_64_relocate_section): Likewise.
* reloc.c (bfd_reloc_code_real): Add
BFD_RELOC_X86_64_CODE_4_GOTTPOFF and
BFD_RELOC_X86_64_CODE_4_GOTPC32_TLSDESC.
* bfd-in2.h: Regenerated.
* libbfd.h: Likewise.
gas/
* config/tc-i386.c (tc_i386_fix_adjustable): Handle
BFD_RELOC_X86_64_CODE_4_GOTTPOFF and
BFD_RELOC_X86_64_CODE_4_GOTPC32_TLSDESC.
(md_assemble): Handle BFD_RELOC_X86_64_CODE_4_GOTTPOFF.
(output_insn): Don't add empty REX prefix with REX2 prefix.
(output_disp): Handle BFD_RELOC_X86_64_CODE_4_GOTTPOFF and
BFD_RELOC_X86_64_CODE_4_GOTPC32_TLSDESC.
(md_apply_fix): Likewise.
(i386_validate_fix): Generate BFD_RELOC_X86_64_CODE_4_GOTTPOFF or
BFD_RELOC_X86_64_CODE_4_GOTPC32_TLSDESC if ixp->fx_tcbit3 is set.
(tc_gen_reloc): Handle BFD_RELOC_X86_64_CODE_4_GOTTPOFF and
BFD_RELOC_X86_64_CODE_4_GOTPC32_TLSDESC.
* testsuite/gas/i386/x86-64-gottpoff.d: New file.
* testsuite/gas/i386/x86-64-gottpoff.s: Likewise.
* testsuite/gas/i386/x86-64-tlsdesc.d: Likewise.
* testsuite/gas/i386/x86-64-tlsdesc.s: Likewise.
include/
* elf/x86-64.h (elf_x86_64_reloc_type): Add
R_X86_64_CODE_4_GOTTPOFF and R_X86_64_CODE_4_GOTPC32_TLSDESC
ld/
* testsuite/ld-x86-64/tlsbindesc.d: Updated.
* testsuite/ld-x86-64/tlsbindesc.rd: Likewise.
* testsuite/ld-x86-64/tlsbindesc.s: Add R_X86_64_CODE_4_GOTTPOFF
and R_X86_64_CODE_4_GOTPC32_TLSDESC tests.
Diffstat (limited to 'bfd/reloc.c')
| -rw-r--r-- | bfd/reloc.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/bfd/reloc.c b/bfd/reloc.c index 56d852d..30852b1 100644 --- a/bfd/reloc.c +++ b/bfd/reloc.c @@ -2477,6 +2477,10 @@ ENUMX BFD_RELOC_X86_64_REX_GOTPCRELX ENUMX BFD_RELOC_X86_64_CODE_4_GOTPCRELX +ENUMX + BFD_RELOC_X86_64_CODE_4_GOTTPOFF +ENUMX + BFD_RELOC_X86_64_CODE_4_GOTPC32_TLSDESC ENUMDOC x86-64/elf relocations. |