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Remove unneeded fields from disassembler internal instruction format. 

llvm-svn: 191731
This commit is contained in:
Craig Topper 2013-10-01 06:56:57 +00:00
parent d5af8e472d
commit 8b278c5dc4
2 changed files with 0 additions and 20 deletions
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16
llvm/lib/Target/X86/Disassembler/X86DisassemblerDecoder.c
View File

@ -592,24 +592,18 @@ static int readOpcode(struct InternalInstruction* insn) {
case 0:
break;
case VEX_LOB_0F:
insn->twoByteEscape = 0x0f;
insn->opcodeType = TWOBYTE;
return consumeByte(insn, &insn->opcode);
case VEX_LOB_0F38:
insn->twoByteEscape = 0x0f;
insn->threeByteEscape = 0x38;
insn->opcodeType = THREEBYTE_38;
return consumeByte(insn, &insn->opcode);
case VEX_LOB_0F3A:
insn->twoByteEscape = 0x0f;
insn->threeByteEscape = 0x3a;
insn->opcodeType = THREEBYTE_3A;
return consumeByte(insn, &insn->opcode);
}
}
else if (insn->vexSize == 2)
{
insn->twoByteEscape = 0x0f;
insn->opcodeType = TWOBYTE;
return consumeByte(insn, &insn->opcode);
}
@ -620,16 +614,12 @@ static int readOpcode(struct InternalInstruction* insn) {
if (current == 0x0f) {
dbgprintf(insn, "Found a two-byte escape prefix (0x%hhx)", current);
insn->twoByteEscape = current;
if (consumeByte(insn, &current))
return -1;
if (current == 0x38) {
dbgprintf(insn, "Found a three-byte escape prefix (0x%hhx)", current);
insn->threeByteEscape = current;
if (consumeByte(insn, &current))
return -1;
@ -637,8 +627,6 @@ static int readOpcode(struct InternalInstruction* insn) {
} else if (current == 0x3a) {
dbgprintf(insn, "Found a three-byte escape prefix (0x%hhx)", current);
insn->threeByteEscape = current;
if (consumeByte(insn, &current))
return -1;
@ -646,8 +634,6 @@ static int readOpcode(struct InternalInstruction* insn) {
} else if (current == 0xa6) {
dbgprintf(insn, "Found a three-byte escape prefix (0x%hhx)", current);
insn->threeByteEscape = current;
if (consumeByte(insn, &current))
return -1;
@ -655,8 +641,6 @@ static int readOpcode(struct InternalInstruction* insn) {
} else if (current == 0xa7) {
dbgprintf(insn, "Found a three-byte escape prefix (0x%hhx)", current);
insn->threeByteEscape = current;
if (consumeByte(insn, &current))
return -1;

4
llvm/lib/Target/X86/Disassembler/X86DisassemblerDecoder.h
View File

@ -541,10 +541,6 @@ struct InternalInstruction {
/* opcode state */
/* The value of the two-byte escape prefix (usually 0x0f) */
uint8_t twoByteEscape;
/* The value of the three-byte escape prefix (usually 0x38 or 0x3a) */
uint8_t threeByteEscape;
/* The last byte of the opcode, not counting any ModR/M extension */
uint8_t opcode;
/* The ModR/M byte of the instruction, if it is an opcode extension */