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Fix couple of bugs connected with eh info:

Browse Source 
1. Correct output offsets on Linux
2. Fix "style" of personality function. It shouldn't be indirect.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36633 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Anton Korobeynikov 2007-05-01 22:23:12 +00:00
parent 794fd75c67
commit 79dda2b048
4 changed files with 46 additions and 24 deletions
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19
include/llvm/Target/TargetAsmInfo.h
View File

@ -263,10 +263,14 @@ namespace llvm {
//===--- Dwarf Emission Directives -----------------------------------===//
/// AbsoluteSectionOffsets - True if we should emit abolute section
/// offsets. Defaults to false.
bool AbsoluteSectionOffsets;
/// AbsoluteDebugSectionOffsets - True if we should emit abolute section
/// offsets for debug information. Defaults to false.
bool AbsoluteDebugSectionOffsets;
/// AbsoluteEHSectionOffsets - True if we should emit abolute section
/// offsets for EH information. Defaults to false.
bool AbsoluteEHSectionOffsets;
/// HasLEB128 - True if target asm supports leb128 directives.
///
bool HasLEB128; // Defaults to false.
@ -530,8 +534,11 @@ namespace llvm {
const char *getProtectedDirective() const {
return ProtectedDirective;
}
bool isAbsoluteSectionOffsets() const {
return AbsoluteSectionOffsets;
bool isAbsoluteDebugSectionOffsets() const {
return AbsoluteDebugSectionOffsets;
}
bool isAbsoluteEHSectionOffsets() const {
return AbsoluteEHSectionOffsets;
}
bool hasLEB128() const {
return HasLEB128;

42
lib/CodeGen/DwarfWriter.cpp
View File

@ -914,13 +914,20 @@ public:
void EmitSectionOffset(const char* Label, const char* Section,
unsigned LabelNumber, unsigned SectionNumber,
bool IsSmall = false) {
bool IsSmall = false, bool isEH = false) {
bool printAbsolute = false;
if (TAI->needsSet()) {
O << "\t.set\t";
PrintLabelName("set", SetCounter);
O << ",";
PrintLabelName(Label, LabelNumber, true);
if (!TAI->isAbsoluteSectionOffsets()) {
if (isEH)
printAbsolute = TAI->isAbsoluteEHSectionOffsets();
else
printAbsolute = TAI->isAbsoluteDebugSectionOffsets();
if (!printAbsolute) {
O << "-";
PrintLabelName(Section, SectionNumber);
}
@ -940,7 +947,13 @@ public:
O << TAI->getData64bitsDirective();
PrintLabelName(Label, LabelNumber, true);
if (!TAI->isAbsoluteSectionOffsets()) {
if (isEH)
printAbsolute = TAI->isAbsoluteEHSectionOffsets();
else
printAbsolute = TAI->isAbsoluteDebugSectionOffsets();
if (!printAbsolute) {
O << "-";
PrintLabelName(Section, SectionNumber);
}
@ -1688,7 +1701,7 @@ private:
CompileUnit *NewCompileUnit(CompileUnitDesc *UnitDesc, unsigned ID) {
// Construct debug information entry.
DIE *Die = new DIE(DW_TAG_compile_unit);
if (TAI->isAbsoluteSectionOffsets())
if (TAI->isAbsoluteDebugSectionOffsets())
AddLabel(Die, DW_AT_stmt_list, DW_FORM_data4, DWLabel("section_line", 0));
else
AddDelta(Die, DW_AT_stmt_list, DW_FORM_data4, DWLabel("section_line", 0),
@ -2107,7 +2120,7 @@ private:
Asm->EmitInt32(ContentSize); Asm->EOL("Length of Compilation Unit Info");
Asm->EmitInt16(DWARF_VERSION); Asm->EOL("DWARF version number");
EmitSectionOffset("abbrev_begin", "section_abbrev", 0, 0, true);
EmitSectionOffset("abbrev_begin", "section_abbrev", 0, 0, true, false);
Asm->EOL("Offset Into Abbrev. Section");
Asm->EmitInt8(TAI->getAddressSize()); Asm->EOL("Address Size (in bytes)");
@ -2366,7 +2379,7 @@ private:
EmitLabel("frame_begin", SubprogramCount);
EmitSectionOffset("frame_common_begin", "section_frame", 0, 0, true);
EmitSectionOffset("frame_common_begin", "section_frame", 0, 0, true, false);
Asm->EOL("FDE CIE offset");
EmitReference("func_begin", SubprogramCount);
@ -2401,7 +2414,8 @@ private:
Asm->EmitInt16(DWARF_VERSION); Asm->EOL("DWARF Version");
EmitSectionOffset("info_begin", "section_info", Unit->getID(), 0, true);
EmitSectionOffset("info_begin", "section_info",
Unit->getID(), 0, true, false);
Asm->EOL("Offset of Compilation Unit Info");
EmitDifference("info_end", Unit->getID(), "info_begin", Unit->getID(),true);
@ -2769,10 +2783,8 @@ private:
if (Personality) {
Asm->EmitULEB128Bytes(7);
Asm->EOL("Augmentation Size");
Asm->EmitInt8(DW_EH_PE_indirect |
DW_EH_PE_pcrel |
DW_EH_PE_sdata4);
Asm->EOL("Personality (indirect pcrel sdata4)");
Asm->EmitInt8(DW_EH_PE_pcrel | DW_EH_PE_sdata4);
Asm->EOL("Personality (pcrel sdata4)");
O << TAI->getData32bitsDirective();
Asm->EmitExternalGlobal((const GlobalVariable *)(Personality));
@ -2830,7 +2842,7 @@ private:
EmitLabel("eh_frame_begin", SubprogramCount);
EmitSectionOffset("eh_frame_begin", "section_eh_frame",
SubprogramCount, 0, true);
SubprogramCount, 0, true, true);
Asm->EOL("FDE CIE offset");
EmitReference("eh_func_begin", SubprogramCount, true);
@ -2994,7 +3006,7 @@ private:
for (unsigned i = 0, N = LandingPads.size(); i != N; ++i) {
const LandingPadInfo &LandingPad = LandingPads[i];
EmitSectionOffset("label", "eh_func_begin",
LandingPad.BeginLabel, SubprogramCount);
LandingPad.BeginLabel, SubprogramCount, false, true);
Asm->EOL("Region start");
EmitDifference("label", LandingPad.EndLabel,
@ -3007,8 +3019,8 @@ private:
else
Asm->EmitInt64(0);
} else {
EmitSectionOffset("label", "eh_func_begin",
LandingPad.LandingPadLabel, SubprogramCount);
EmitSectionOffset("label", "eh_func_begin", LandingPad.LandingPadLabel,
SubprogramCount, false, true);
}
Asm->EOL("Landing pad");

3
lib/Target/TargetAsmInfo.cpp
View File

@ -75,7 +75,8 @@ TargetAsmInfo::TargetAsmInfo() :
WeakRefDirective(0),
HiddenDirective("\t.hidden\t"),
ProtectedDirective("\t.protected\t"),
AbsoluteSectionOffsets(false),
AbsoluteDebugSectionOffsets(false),
AbsoluteEHSectionOffsets(false),
HasLEB128(false),
HasDotLoc(false),
HasDotFile(false),

6
lib/Target/X86/X86TargetAsmInfo.cpp
View File

@ -99,7 +99,8 @@ X86TargetAsmInfo::X86TargetAsmInfo(const X86TargetMachine &TM) {
case X86Subtarget::isELF:
// Set up DWARF directives
HasLEB128 = true; // Target asm supports leb128 directives (little-endian)
AbsoluteSectionOffsets = true;
AbsoluteDebugSectionOffsets = true;
AbsoluteEHSectionOffsets = false;
// bool HasLEB128; // Defaults to false.
// hasDotLoc - True if target asm supports .loc directives.
// bool HasDotLoc; // Defaults to false.
@ -141,7 +142,8 @@ X86TargetAsmInfo::X86TargetAsmInfo(const X86TargetMachine &TM) {
// Set up DWARF directives
HasLEB128 = true; // Target asm supports leb128 directives (little-endian)
AbsoluteSectionOffsets = true;
AbsoluteDebugSectionOffsets = true;
AbsoluteEHSectionOffsets = false;
PrivateGlobalPrefix = "L"; // Prefix for private global symbols
WeakRefDirective = "\t.weak\t";
SetDirective = "\t.set\t";