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Believe it or not, this is a simplification. :-)

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Basically, this patch is working towards removing the hard-coded values that are
output for the CIE. In particular, the CIE augmentation and the CIE augmentation
size. Both of these should be calculated. In the process, I was able to make a
bunch of code simpler.

The encodings for the personality, LSDA, and FDE in the CIE are still not
correct. They should be generated either from target-specific callbacks (blech!)
or grokked from first-principles.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81404 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bill Wendling
2009-09-09 23:56:55 +00:00
parent 10bf734e6e
commit 52783c63a1
2 changed files with 86 additions and 37 deletions
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7
lib/CodeGen/AsmPrinter/DwarfException.h
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@ -51,6 +51,11 @@ class VISIBILITY_HIDDEN DwarfException : public Dwarf {
std::vector<FunctionEHFrameInfo> EHFrames;
/// UsesLSDA - Indicates whether an FDE that uses the CIE at the given index
/// uses an LSDA. If so, then we need to encode that information in the CIE's
/// augmentation.
DenseMap<unsigned, bool> UsesLSDA;
/// shouldEmitTable - Per-function flag to indicate if EH tables should
/// be emitted.
bool shouldEmitTable;
@ -70,6 +75,8 @@ class VISIBILITY_HIDDEN DwarfException : public Dwarf {
/// ExceptionTimer - Timer for the Dwarf exception writer.
Timer *ExceptionTimer;
unsigned SizeOfEncodedValue(unsigned Encoding);
/// EmitCIE - Emit a Common Information Entry (CIE). This holds information
/// that is shared among many Frame Description Entries. There is at least
/// one CIE in every non-empty .debug_frame section.