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| author | H.J. Lu <hjl.tools@gmail.com> | 2023-06-08 12:12:48 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2023-12-28 08:47:17 -0800 |
| commit | 4a54cb06585f568031dfd291d0fe45979ad75e98 (patch) | |
| tree | 2469a2d8eb9ce968fd9ef5039d25679bae946e3b /elfcpp | |
| parent | 3d5a60de52556f6a53d71d7e607c6696450ae3e4 (diff) | |
| download | gdb-4a54cb06585f568031dfd291d0fe45979ad75e98.zip gdb-4a54cb06585f568031dfd291d0fe45979ad75e98.tar.gz gdb-4a54cb06585f568031dfd291d0fe45979ad75e98.tar.bz2 | |
gold: Handle R_X86_64_CODE_4_GOTPCRELX
Handle R_X86_64_CODE_4_GOTPCRELX and convert
mov name@GOTPCREL(%rip), %r31
to
lea name@GOTPCREL(%rip), %r31
if the instruction is encoded with the REX2 prefix when possible.
elfcpp/
* x86_64.h (R_X86_64_CODE_4_GOTPCRELX): New.
gold/
* x86_64.cc (Target_x86_64::can_convert_mov_to_lea): Handle
R_X86_64_CODE_4_GOTPCRELX.
(Target_x86_64::Scan::get_reference_flags): Likewise.
(Target_x86_64::Scan::local): Likewise.
(Target_x86_64::Scan::possible_function_pointer_reloc): Likewise.
(Target_x86_64::Scan::global): Likewise.
(Target_x86_64::Relocate::relocate): Likewise.
* testsuite/x86_64_mov_to_lea1.s: Add a test for
R_X86_64_CODE_4_GOTPCRELX.
* testsuite/x86_64_mov_to_lea2.s: Likewise.
* testsuite/x86_64_mov_to_lea3.s: Likewise.
* testsuite/x86_64_mov_to_lea4.s: Likewise.
* testsuite/x86_64_mov_to_lea5.s: Likewise.
* testsuite/x86_64_mov_to_lea.sh: Updated.
Diffstat (limited to 'elfcpp')
| -rw-r--r-- | elfcpp/x86_64.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/elfcpp/x86_64.h b/elfcpp/x86_64.h index 0377e77..97a87ae 100644 --- a/elfcpp/x86_64.h +++ b/elfcpp/x86_64.h @@ -95,9 +95,13 @@ enum R_X86_64_PC32_BND = 39, // PC relative 32 bit signed with BND prefix R_X86_64_PLT32_BND = 40, // 32 bit PLT address with BND prefix R_X86_64_GOTPCRELX = 41, // 32 bit signed PC relative offset to GOT - // without REX prefix, relaxable. + // without REX nor REX2 prefixes, relaxable. R_X86_64_REX_GOTPCRELX = 42, // 32 bit signed PC relative offset to GOT // with REX prefix, relaxable. + R_X86_64_CODE_4_GOTPCRELX = 43, // 32 bit signed PC relative offset to + // GOT if the instruction starts at 4 + // bytes before the relocation offset, + // relaxable. // GNU vtable garbage collection extensions. R_X86_64_GNU_VTINHERIT = 250, R_X86_64_GNU_VTENTRY = 251 |