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Factor out some duplication. NFC.

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llvm-svn: 255569
This commit is contained in:
Pete Cooper 2015-12-14 23:10:52 +00:00
parent 2f67df6acf
commit 77ebe023c7
1 changed files with 20 additions and 44 deletions
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64
tools/llvm-objdump/MachODump.cpp
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@ -6771,6 +6771,22 @@ static unsigned getSizeForEncoding(bool is64Bit,
}
}
static uint64_t readPointer(const char *&Pos, bool is64Bit, unsigned Encoding) {
switch (getSizeForEncoding(is64Bit, Encoding)) {
case 2:
return readNext<uint16_t>(Pos);
break;
case 4:
return readNext<uint32_t>(Pos);
break;
case 8:
return readNext<uint64_t>(Pos);
break;
default:
llvm_unreachable("Illegal data size");
}
}
static void printMachOEHFrameSection(const MachOObjectFile *Obj,
std::map<uint64_t, SymbolRef> &Symbols,
const SectionRef &EHFrame) {
@ -6867,19 +6883,7 @@ static void printMachOEHFrameSection(const MachOObjectFile *Obj,
case 'P': {
assert(!Personality && "Duplicate personality");
PersonalityEncoding = readNext<uint8_t>(Pos);
switch (getSizeForEncoding(is64Bit, *PersonalityEncoding)) {
case 2:
Personality = readNext<uint16_t>(Pos);
break;
case 4:
Personality = readNext<uint32_t>(Pos);
break;
case 8:
Personality = readNext<uint64_t>(Pos);
break;
default:
llvm_unreachable("Illegal data size");
}
Personality = readPointer(Pos, is64Bit, *PersonalityEncoding);
break;
}
case 'R':
@ -6953,24 +6957,8 @@ static void printMachOEHFrameSection(const MachOObjectFile *Obj,
uint64_t PCPointerSize = getSizeForEncoding(is64Bit,
*CIE.FDEPointerEncoding);
uint64_t PCBegin;
uint64_t PCRange;
switch (PCPointerSize) {
case 2:
PCBegin = readNext<uint16_t>(Pos);
PCRange = readNext<uint16_t>(Pos);
break;
case 4:
PCBegin = readNext<uint32_t>(Pos);
PCRange = readNext<uint32_t>(Pos);
break;
case 8:
PCBegin = readNext<uint64_t>(Pos);
PCRange = readNext<uint64_t>(Pos);
break;
default:
llvm_unreachable("Illegal data size");
}
uint64_t PCBegin = readPointer(Pos, is64Bit, *CIE.FDEPointerEncoding);
uint64_t PCRange = readPointer(Pos, is64Bit, *CIE.FDEPointerEncoding);
Optional<uint64_t> AugmentationLength;
uint32_t LSDAPointerSize;
@ -6984,19 +6972,7 @@ static void printMachOEHFrameSection(const MachOObjectFile *Obj,
// Decode the LSDA if the CIE augmentation string said we should.
if (CIE.LSDAPointerEncoding) {
LSDAPointerSize = getSizeForEncoding(is64Bit, *CIE.LSDAPointerEncoding);
switch (LSDAPointerSize) {
case 2:
LSDAPointer = readNext<uint16_t>(Pos);
break;
case 4:
LSDAPointer = readNext<uint32_t>(Pos);
break;
case 8:
LSDAPointer = readNext<uint64_t>(Pos);
break;
default:
llvm_unreachable("Illegal data size");
}
LSDAPointer = readPointer(Pos, is64Bit, *CIE.LSDAPointerEncoding);
}
}