diff options
| author | Andrew Ng <andrew.ng@sony.com> | 2021-01-27 16:47:21 +0000 |
|---|---|---|
| committer | Andrew Ng <andrew.ng@sony.com> | 2021-02-02 11:35:00 +0000 |
| commit | 94fedd266125a5425aa33e11332bf414f0b6dc35 (patch) | |
| tree | 28c6ae695332774e460429fd819025ec629e4203 /llvm/lib/Target/X86/Disassembler/X86Disassembler.cpp | |
| parent | 0a2a260aab177bfbdef5829ea16e39323ce50916 (diff) | |
| download | llvm-94fedd266125a5425aa33e11332bf414f0b6dc35.zip llvm-94fedd266125a5425aa33e11332bf414f0b6dc35.tar.gz llvm-94fedd266125a5425aa33e11332bf414f0b6dc35.tar.bz2 | |
[X86] Fix disassembly of x86-64 GDTLS code sequence
For x86-64 the REX.w prefix takes precedence over any other size
override (i.e. 0x66). Therefore, for x86-64 when REX.w is present set
'hasOpSize' to false to ensure that any size override is ignored.
Fixes PR48901.
Differential Revision: https://reviews.llvm.org/D95682
Diffstat (limited to 'llvm/lib/Target/X86/Disassembler/X86Disassembler.cpp')
| -rw-r--r-- | llvm/lib/Target/X86/Disassembler/X86Disassembler.cpp | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/llvm/lib/Target/X86/Disassembler/X86Disassembler.cpp b/llvm/lib/Target/X86/Disassembler/X86Disassembler.cpp index 05e482a..4e6d8e8 100644 --- a/llvm/lib/Target/X86/Disassembler/X86Disassembler.cpp +++ b/llvm/lib/Target/X86/Disassembler/X86Disassembler.cpp @@ -492,6 +492,7 @@ static int readPrefixes(struct InternalInstruction *insn) { insn->addressSize = (insn->hasAdSize ? 4 : 8); insn->displacementSize = 4; insn->immediateSize = 4; + insn->hasOpSize = false; } else { insn->registerSize = (insn->hasOpSize ? 2 : 4); insn->addressSize = (insn->hasAdSize ? 4 : 8); |