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Handle mix of personalities.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34752 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jim Laskey 2007-02-28 18:38:31 +00:00
parent 63f3e3fa1d
commit 3f09fc2ff8
1 changed files with 38 additions and 31 deletions
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69
lib/CodeGen/DwarfWriter.cpp
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@ -22,6 +22,7 @@
#include "llvm/CodeGen/MachineModuleInfo.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineLocation.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/Dwarf.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/DataTypes.h"
@ -2667,13 +2668,21 @@ private:
/// shouldEmit - Flag to indicate if debug information should be emitted.
///
bool shouldEmit;
/// EmitInitial - Emit the common eh unwind frame.
/// FuncCPPPersonality - C++ persoanlity function.
///
void EmitInitial() {
Function *FuncCPPPersonality;
/// EmitCommonEHFrame - Emit the common eh unwind frame.
///
void EmitCommonEHFrame() {
// Only do it once.
if (didInitial) return;
didInitial = true;
// If there is a personality present then we need to indicate that
// in the common eh frame.
Function *Personality = MMI->getPersonality();
Function *Personality = FuncCPPPersonality;
// Size and sign of stack growth.
int stackGrowth =
@ -2755,7 +2764,8 @@ private:
void EmitEHFrame() {
// If there is a personality present then we need to indicate that
// in the common eh frame.
Function *Personality = MMI->getPersonality();
Function *Personality = FuncCPPPersonality;
// Function *Personality = MMI->getPersonality();
MachineFrameInfo *MFI = MF->getFrameInfo();
Asm->SwitchToTextSection(TAI->getDwarfEHFrameSection());
@ -2787,12 +2797,19 @@ private:
"eh_func_begin", SubprogramCount);
Asm->EOL("FDE address range");
// If there is a personality then point to the language specific data
// area in the exception table.
// If there is a personality and landing pads then point to the language
// specific data area in the exception table.
if (Personality) {
Asm->EmitULEB128Bytes(4);
Asm->EOL("Augmentation size");
EmitReference("exception", SubprogramCount, true);
if (!MMI->getLandingPads().empty()) {
EmitReference("exception", SubprogramCount, true);
} else if(TAI->getAddressSize() == 8) {
Asm->EmitInt64((int)0);
} else {
Asm->EmitInt32((int)0);
}
Asm->EOL("Language Specific Data Area");
} else {
Asm->EmitULEB128Bytes(0);
@ -2975,41 +2992,27 @@ public:
: Dwarf(OS, A, T)
, didInitial(false)
, shouldEmit(false)
, FuncCPPPersonality(NULL)
{}
virtual ~DwarfException() {}
/// ShouldEmitDwarf - Returns true if Dwarf declarations should be made.
///
bool ShouldEmitDwarf() const { return shouldEmit; }
/// SetModuleInfo - Set machine module information when it's known that pass
/// manager has created it. Set by the target AsmPrinter.
void SetModuleInfo(MachineModuleInfo *mmi) {
// Make sure initial declarations are made.
if (!MMI &&
ExceptionHandling &&
TAI->getSupportsExceptionHandling() &&
mmi->getPersonality()) {
MMI = mmi;
shouldEmit = true;
EmitInitial();
}
MMI = mmi;
}
/// BeginModule - Emit all exception information that should come prior to the
/// content.
void BeginModule(Module *M) {
this->M = M;
if (!ShouldEmitDwarf()) return;
FuncCPPPersonality = M->getFunction("__gxx_personality_v0");
}
/// EndModule - Emit all exception information that should come after the
/// content.
void EndModule() {
if (!ShouldEmitDwarf()) return;
}
/// BeginFunction - Gather pre-function exception information. Assumes being
@ -3017,19 +3020,23 @@ public:
void BeginFunction(MachineFunction *MF) {
this->MF = MF;
if (!ShouldEmitDwarf()) return;
// Assumes in correct section after the entry point.
EmitLabel("eh_func_begin", ++SubprogramCount);
if (MMI &&
ExceptionHandling &&
TAI->getSupportsExceptionHandling()) {
shouldEmit = true;
// Assumes in correct section after the entry point.
EmitLabel("eh_func_begin", ++SubprogramCount);
}
}
/// EndFunction - Gather and emit post-function exception information.
///
void EndFunction() {
if (!ShouldEmitDwarf()) return;
if (!shouldEmit) return;
EmitLabel("eh_func_end", SubprogramCount);
EmitExceptionTable();
EmitCommonEHFrame();
EmitEHFrame();
}
};
@ -3376,7 +3383,7 @@ void DwarfWriter::EndFunction() {
DD->EndFunction();
DE->EndFunction();
if (MachineModuleInfo *MMI = DD->getMMI()) {
if (MachineModuleInfo *MMI = DD->getMMI() ? DD->getMMI() : DE->getMMI()) {
// Clear function debug information.
MMI->EndFunction();
}