maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity

Add catch block handling to SjLj exception handling. 

llvm-svn: 78817
This commit is contained in:
Jim Grosbach 2009-08-12 17:38:44 +00:00
parent e274526d78
commit 3cfc6463c9
2 changed files with 13 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
llvm/lib/CodeGen/AsmPrinter/DwarfException.cpp
View File

@ -531,6 +531,11 @@ void DwarfException::EmitExceptionTable() {
const unsigned SiteLengthSize = sizeof(int32_t); // DW_EH_PE_udata4
const unsigned LandingPadSize = sizeof(int32_t); // DW_EH_PE_udata4
unsigned SizeSites;
bool HaveTTData = (TAI->getExceptionHandlingType() == ExceptionHandling::SjLj)
? (!TypeInfos.empty() || !FilterIds.empty()) : true;
if (TAI->getExceptionHandlingType() == ExceptionHandling::SjLj) {
SizeSites = (MF->getMaxCallSiteIndex() - CallSites.size()) *
TargetAsmInfo::getULEB128Size(0) * 2;
@ -553,7 +558,8 @@ void DwarfException::EmitExceptionTable() {
unsigned TotalSize = sizeof(int8_t) + // LPStart format
sizeof(int8_t) + // TType format
TargetAsmInfo::getULEB128Size(TypeOffset) + // TType base offset
(HaveTTData ?
TargetAsmInfo::getULEB128Size(TypeOffset) : 0) + // TType base offset
TypeOffset;
unsigned SizeAlign = (4 - TotalSize) & 3;
@ -624,11 +630,10 @@ void DwarfException::EmitExceptionTable() {
Asm->EOL("TType base offset");
}
#else
// For SjLj exceptions, is there is no TypeInfo, then we just explicitly
// For SjLj exceptions, if there is no TypeInfo, then we just explicitly
// say that we're omitting that bit.
// FIXME: does this apply to Dwarf also? The above #if 0 implies yes?
if (TAI->getExceptionHandlingType() == ExceptionHandling::SjLj
&& (TypeInfos.empty() || FilterIds.empty())) {
if (!HaveTTData) {
Asm->EmitInt8(dwarf::DW_EH_PE_omit);
Asm->EOL("TType format (DW_EH_PE_omit)");
} else {

4
llvm/lib/Target/ARM/ARMISelLowering.cpp
View File

@ -312,6 +312,10 @@ ARMTargetLowering::ARMTargetLowering(TargetMachine &TM)
setOperationAction(ISD::VAEND, MVT::Other, Expand);
setOperationAction(ISD::STACKSAVE, MVT::Other, Expand);
setOperationAction(ISD::STACKRESTORE, MVT::Other, Expand);
setOperationAction(ISD::EHSELECTION, MVT::i32, Expand);
// FIXME: Shouldn't need this, since no register is used, but the legalizer
// doesn't yet know how to not do that for SjLj.
setExceptionSelectorRegister(ARM::R0);
if (Subtarget->isThumb())
setOperationAction(ISD::DYNAMIC_STACKALLOC, MVT::i32, Custom);
else