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SjLj based exception handling unwinding support. This patch is nasty, brutish

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and short. Well, it's kinda short. Definitely nasty and brutish.

The front-end generates the register/unregister calls into the SjLj runtime,
call-site indices and landing pad dispatch. The back end fills in the LSDA
with the call-site information provided by the front end. Catch blocks are
not yet implemented.

Built on Darwin and verified no llvm-core "make check" regressions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78625 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jim Grosbach
2009-08-11 00:09:57 +00:00
parent 3a1f0f6785
commit 1b747ad8a0
25 changed files with 332 additions and 79 deletions
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16
tools/lto/LTOCodeGenerator.cpp
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@@ -394,9 +394,19 @@ bool LTOCodeGenerator::generateAssemblyCode(formatted_raw_ostream& out,
Module* mergedModule = _linker.getModule();
// If target supports exception handling then enable it now.
if ( _target->getTargetAsmInfo()->doesSupportExceptionHandling() )
llvm::ExceptionHandling = true;
// If target supports exception handling then enable it now.
switch (_target->getTargetAsmInfo()->getExceptionHandlingType()) {
case ExceptionHandling::Dwarf:
llvm::DwarfExceptionHandling = true;
break;
case ExceptionHandling::SjLj:
llvm::SjLjExceptionHandling = true;
break;
case ExceptionHandling::None:
break;
default:
assert (0 && "Unknown exception handling model!");
}
// if options were requested, set them
if ( !_codegenOptions.empty() )