6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-09-15 22:25:31 +00:00
Code Issues Projects Releases Wiki Activity

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.

Browse Source 
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
Download Patch File Download Diff File Expand all files Collapse all files

21
tools/llvm-mc/Disassembler.cpp
View File

@@ -65,15 +65,26 @@ static bool PrintInsts(const MCDisassembler &DisAsm,
for (Index = 0; Index < Bytes.size(); Index += Size) {
MCInst Inst;
if (DisAsm.getInstruction(Inst, Size, memoryObject, Index,
/*REMOVE*/ nulls())) {
Printer.printInst(&Inst, Out);
Out << "\n";
} else {
MCDisassembler::DecodeStatus S;
S = DisAsm.getInstruction(Inst, Size, memoryObject, Index,
/*REMOVE*/ nulls());
switch (S) {
case MCDisassembler::Fail:
SM.PrintMessage(SMLoc::getFromPointer(Bytes[Index].second),
"invalid instruction encoding", "warning");
if (Size == 0)
Size = 1; // skip illegible bytes
break;
case MCDisassembler::SoftFail:
SM.PrintMessage(SMLoc::getFromPointer(Bytes[Index].second),
"potentially undefined instruction encoding", "warning");
// Fall through
case MCDisassembler::Success:
Printer.printInst(&Inst, Out);
Out << "\n";
break;
}
}