6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-03-04 21:31:03 +00:00
Code Issues Projects Releases Wiki Activity

Fixed handling of immediate operand sizes, which

Browse Source 
weren't properly reflecting the OperandSize attribute
of the instruction leading to improper decoding of
certain instructions with the 66H prefix.  Also added
a test case for this.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117084 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Sean Callanan 2010-10-22 01:24:11 +00:00
parent 2172f3cd97
commit 751752e7ca
2 changed files with 4 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
lib/Target/X86/Disassembler/X86DisassemblerDecoder.c
View File

@ -405,7 +405,7 @@ static int readPrefixes(struct InternalInstruction* insn) {
insn->registerSize = (hasOpSize ? 2 : 4);
insn->addressSize = (hasAdSize ? 2 : 4);
insn->displacementSize = (hasAdSize ? 2 : 4);
insn->immediateSize = (hasAdSize ? 2 : 4);
insn->immediateSize = (hasOpSize ? 2 : 4);
} else if (insn->mode == MODE_64BIT) {
if (insn->rexPrefix && wFromREX(insn->rexPrefix)) {
insn->registerSize = 8;

3
test/MC/Disassembler/simple-tests.txt
View File

@ -63,3 +63,6 @@
# CHECK: enter $1, $2
0xc8 0x01 0x00 0x02
# CHECK: movw $47416, -66(%rbp)
0x66 0xc7 0x45 0xbe 0x38 0xb9