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Add tests for .seh_savereg and .seh_savexmm parsing. Once again, fix the

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buggy methods that parse these directives.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132045 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Charles Davis 2011-05-25 04:51:25 +00:00
parent da86a08284
commit 575630ccb8
2 changed files with 23 additions and 6 deletions
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23
lib/MC/MCParser/COFFAsmParser.cpp
View File

@ -303,6 +303,10 @@ bool COFFAsmParser::ParseSEHDirectiveSaveReg(StringRef, SMLoc L) {
int64_t Off;
if (ParseSEHRegisterNumber(Reg))
return true;
if (getLexer().isNot(AsmToken::Comma))
return TokError("expected comma");
Lex();
SMLoc startLoc = getLexer().getLoc();
if (getParser().ParseAbsoluteExpression(Off))
return true;
@ -326,6 +330,10 @@ bool COFFAsmParser::ParseSEHDirectiveSaveXMM(StringRef, SMLoc L) {
int64_t Off;
if (ParseSEHRegisterNumber(Reg))
return true;
if (getLexer().isNot(AsmToken::Comma))
return TokError("expected comma");
Lex();
SMLoc startLoc = getLexer().getLoc();
if (getParser().ParseAbsoluteExpression(Off))
return true;
@ -387,14 +395,13 @@ bool COFFAsmParser::ParseAtUnwindOrAtExcept(bool &unwind, bool &except) {
}
bool COFFAsmParser::ParseSEHRegisterNumber(unsigned &RegNo) {
int64_t n;
SMLoc startLoc = getLexer().getLoc();
if (getParser().ParseAbsoluteExpression(n)) {
if (getLexer().is(AsmToken::Percent)) {
const TargetAsmInfo &asmInfo = getContext().getTargetAsmInfo();
SMLoc endLoc;
unsigned LLVMRegNo;
if (getParser().getTargetParser().ParseRegister(LLVMRegNo,startLoc,endLoc))
return Error(startLoc, "expected register or number");
return true;
// Check that this is a non-volatile register.
const unsigned *NVRegs = asmInfo.getCalleeSavedRegs();
@ -410,11 +417,15 @@ bool COFFAsmParser::ParseSEHRegisterNumber(unsigned &RegNo) {
return Error(startLoc,"register can't be represented in SEH unwind info");
RegNo = SEHRegNo;
}
else
else {
int64_t n;
if (getParser().ParseAbsoluteExpression(n))
return true;
if (n > 15)
return Error(startLoc, "register number is too high");
RegNo = n;
}
if (RegNo > 15)
return Error(startLoc, "register number is too high");
return false;
}

6
test/MC/AsmParser/directive_seh.s
View File

@ -3,6 +3,8 @@
# CHECK: .seh_proc func
# CHECK: .seh_pushframe @code
# CHECK: .seh_stackalloc 24
# CHECK: .seh_savereg 6, 16
# CHECK: .seh_savexmm 8, 0
# CHECK: .seh_endprologue
# CHECK: .seh_handler __C_specific_handler, @except
# CHECK: .seh_endproc
@ -15,6 +17,10 @@ func:
.seh_pushframe @code
subq $24, %rsp
.seh_stackalloc 24
movq %rsi, 16(%rsp)
.seh_savereg %rsi, 16
movups %xmm8, (%rsp)
.seh_savexmm %xmm8, 0
.seh_endprologue
.seh_handler __C_specific_handler, @except
addq $24, %rsp