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Allow the MCDisassembler to return a "soft fail" status code, indicating an instruction that is disassemblable, but invalid. Only used for ARM UNPREDICTABLE instructions at the moment.

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Patch by James Molloy.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137830 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Owen Anderson
2011-08-17 17:44:15 +00:00
parent 0e6d230abd
commit 83e3f67fb6
12 changed files with 793 additions and 657 deletions
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15
lib/Target/X86/Disassembler/X86Disassembler.cpp
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@ -106,11 +106,12 @@ static void logger(void* arg, const char* log) {
// Public interface for the disassembler
//
bool X86GenericDisassembler::getInstruction(MCInst &instr,
uint64_t &size,
const MemoryObject &region,
uint64_t address,
raw_ostream &vStream) const {
MCDisassembler::DecodeStatus
X86GenericDisassembler::getInstruction(MCInst &instr,
uint64_t &size,
const MemoryObject &region,
uint64_t address,
raw_ostream &vStream) const {
InternalInstruction internalInstr;
int ret = decodeInstruction(&internalInstr,
@ -123,11 +124,11 @@ bool X86GenericDisassembler::getInstruction(MCInst &instr,
if (ret) {
size = internalInstr.readerCursor - address;
return false;
return Fail;
}
else {
size = internalInstr.length;
return !translateInstruction(instr, internalInstr);
return (!translateInstruction(instr, internalInstr)) ? Success : Fail;
}
}