/* -*- mode: C++; c-basic-offset: 4; tab-width: 4 -*-
*
- * Copyright (c) 2008 Apple Inc. All rights reserved.
+ * Copyright (c) 2008-2011 Apple Inc. All rights reserved.
*
* @APPLE_LICENSE_HEADER_START@
*
{
public:
static bool validFile(const uint8_t* fileContent);
- static UnwindPrinter<A>* make(const uint8_t* fileContent, uint32_t fileLength, const char* path)
- { return new UnwindPrinter<A>(fileContent, fileLength, path); }
+ static UnwindPrinter<A>* make(const uint8_t* fileContent, uint32_t fileLength,
+ const char* path, bool showFunctionNames)
+ { return new UnwindPrinter<A>(fileContent, fileLength,
+ path, showFunctionNames); }
virtual ~UnwindPrinter() {}
typedef __gnu_cxx::hash_set<const char*, __gnu_cxx::hash<const char*>, CStringEquals> StringSet;
- UnwindPrinter(const uint8_t* fileContent, uint32_t fileLength, const char* path);
+ UnwindPrinter(const uint8_t* fileContent, uint32_t fileLength,
+ const char* path, bool showFunctionNames);
bool findUnwindSection();
- void printUnwindSection();
+ void printUnwindSection(bool showFunctionNames);
+ void printObjectUnwindSection(bool showFunctionNames);
void getSymbolTableInfo();
- const char* functionName(pint_t addr);
+ const char* functionName(pint_t addr, uint32_t* offset=NULL);
+ const char* personalityName(const macho_relocation_info<typename A::P>* reloc);
+ bool hasExernReloc(uint64_t sectionOffset, const char** personalityStr, pint_t* addr=NULL);
+
static const char* archName();
+ static void decode(uint32_t encoding, const uint8_t* funcStart, char* str);
const char* fPath;
const macho_header<P>* fHeader;
};
-template <> const char* UnwindPrinter<ppc>::archName() { return "ppc"; }
-template <> const char* UnwindPrinter<ppc64>::archName() { return "ppc64"; }
template <> const char* UnwindPrinter<x86>::archName() { return "i386"; }
template <> const char* UnwindPrinter<x86_64>::archName() { return "x86_64"; }
template <> const char* UnwindPrinter<arm>::archName() { return "arm"; }
-template <>
-bool UnwindPrinter<ppc>::validFile(const uint8_t* fileContent)
-{
- const macho_header<P>* header = (const macho_header<P>*)fileContent;
- if ( header->magic() != MH_MAGIC )
- return false;
- if ( header->cputype() != CPU_TYPE_POWERPC )
- return false;
- switch (header->filetype()) {
- case MH_EXECUTE:
- case MH_DYLIB:
- case MH_BUNDLE:
- case MH_DYLINKER:
- return true;
- }
- return false;
-}
-
-template <>
-bool UnwindPrinter<ppc64>::validFile(const uint8_t* fileContent)
-{
- const macho_header<P>* header = (const macho_header<P>*)fileContent;
- if ( header->magic() != MH_MAGIC_64 )
- return false;
- if ( header->cputype() != CPU_TYPE_POWERPC64 )
- return false;
- switch (header->filetype()) {
- case MH_EXECUTE:
- case MH_DYLIB:
- case MH_BUNDLE:
- case MH_DYLINKER:
- return true;
- }
- return false;
-}
template <>
bool UnwindPrinter<x86>::validFile(const uint8_t* fileContent)
case MH_DYLIB:
case MH_BUNDLE:
case MH_DYLINKER:
+ case MH_OBJECT:
return true;
}
return false;
case MH_DYLIB:
case MH_BUNDLE:
case MH_DYLINKER:
- return true;
- }
- return false;
-}
-
-template <>
-bool UnwindPrinter<arm>::validFile(const uint8_t* fileContent)
-{
- const macho_header<P>* header = (const macho_header<P>*)fileContent;
- if ( header->magic() != MH_MAGIC )
- return false;
- if ( header->cputype() != CPU_TYPE_ARM )
- return false;
- switch (header->filetype()) {
- case MH_EXECUTE:
- case MH_DYLIB:
- case MH_BUNDLE:
- case MH_DYLINKER:
+ case MH_OBJECT:
return true;
}
return false;
template <typename A>
-UnwindPrinter<A>::UnwindPrinter(const uint8_t* fileContent, uint32_t fileLength, const char* path)
+UnwindPrinter<A>::UnwindPrinter(const uint8_t* fileContent, uint32_t fileLength, const char* path, bool showFunctionNames)
: fHeader(NULL), fLength(fileLength), fUnwindSection(NULL),
fStrings(NULL), fStringsEnd(NULL), fSymbols(NULL), fSymbolCount(0), fMachHeaderAddress(0)
{
getSymbolTableInfo();
- if ( findUnwindSection() )
- printUnwindSection();
+ if ( findUnwindSection() ) {
+ if ( fHeader->filetype() == MH_OBJECT )
+ printObjectUnwindSection(showFunctionNames);
+ else
+ printUnwindSection(showFunctionNames);
+ }
}
}
template <typename A>
-const char* UnwindPrinter<A>::functionName(pint_t addr)
+const char* UnwindPrinter<A>::functionName(pint_t addr, uint32_t* offset)
{
+ const macho_nlist<P>* closestSymbol = NULL;
+ if ( offset != NULL )
+ *offset = 0;
for (uint32_t i=0; i < fSymbolCount; ++i) {
uint8_t type = fSymbols[i].n_type();
if ( ((type & N_STAB) == 0) && ((type & N_TYPE) == N_SECT) ) {
//fprintf(stderr, "addr=0x%08llX, i=%u, n_type=0x%0X, r=%s\n", (long long)(fSymbols[i].n_value()), i, fSymbols[i].n_type(), r);
return r;
}
+ else if ( offset != NULL ) {
+ if ( closestSymbol == NULL ) {
+ if ( fSymbols[i].n_value() < addr )
+ closestSymbol = &fSymbols[i];
+ }
+ else {
+ if ( (fSymbols[i].n_value() < addr) && (fSymbols[i].n_value() > closestSymbol->n_value()) )
+ closestSymbol = &fSymbols[i];
+ }
+ }
}
}
- return "??";
+ if ( closestSymbol != NULL ) {
+ *offset = addr - closestSymbol->n_value();
+ return &fStrings[closestSymbol->n_strx()];
+ }
+ return "--anonymous function--";
}
template <typename A>
bool UnwindPrinter<A>::findUnwindSection()
{
+ const char* unwindSectionName = "__unwind_info";
+ const char* unwindSegmentName = "__TEXT";
+ if ( fHeader->filetype() == MH_OBJECT ) {
+ unwindSectionName = "__compact_unwind";
+ unwindSegmentName = "__LD";
+ }
const uint8_t* const endOfFile = (uint8_t*)fHeader + fLength;
const uint8_t* const endOfLoadCommands = (uint8_t*)fHeader + sizeof(macho_header<P>) + fHeader->sizeofcmds();
const uint32_t cmd_count = fHeader->ncmds();
const macho_section<P>* const sectionsStart = (macho_section<P>*)((char*)segCmd + sizeof(macho_segment_command<P>));
const macho_section<P>* const sectionsEnd = §ionsStart[segCmd->nsects()];
for(const macho_section<P>* sect = sectionsStart; sect < sectionsEnd; ++sect) {
- if ( (strcmp(sect->sectname(), "__unwind_info") == 0) && (strcmp(sect->segname(), "__TEXT") == 0) ) {
+ if ( (strncmp(sect->sectname(), unwindSectionName, 16) == 0) && (strcmp(sect->segname(), unwindSegmentName) == 0) ) {
fUnwindSection = sect;
fMachHeaderAddress = segCmd->vmaddr();
return fUnwindSection;
return false;
}
+#define EXTRACT_BITS(value, mask) \
+ ( (value >> __builtin_ctz(mask)) & (((1 << __builtin_popcount(mask)))-1) )
+
+
+template <>
+void UnwindPrinter<x86_64>::decode(uint32_t encoding, const uint8_t* funcStart, char* str)
+{
+ *str = '\0';
+ switch ( encoding & UNWIND_X86_64_MODE_MASK ) {
+ case UNWIND_X86_64_MODE_RBP_FRAME:
+ {
+ uint32_t savedRegistersOffset = EXTRACT_BITS(encoding, UNWIND_X86_64_RBP_FRAME_OFFSET);
+ uint32_t savedRegistersLocations = EXTRACT_BITS(encoding, UNWIND_X86_64_RBP_FRAME_REGISTERS);
+ if ( savedRegistersLocations == 0 ) {
+ strcpy(str, "rbp frame, no saved registers");
+ }
+ else {
+ sprintf(str, "rbp frame, at -%d:", savedRegistersOffset*8);
+ bool needComma = false;
+ for (int i=0; i < 5; ++i) {
+ if ( needComma )
+ strcat(str, ",");
+ else
+ needComma = true;
+ switch (savedRegistersLocations & 0x7) {
+ case UNWIND_X86_64_REG_NONE:
+ strcat(str, "-");
+ break;
+ case UNWIND_X86_64_REG_RBX:
+ strcat(str, "rbx");
+ break;
+ case UNWIND_X86_64_REG_R12:
+ strcat(str, "r12");
+ break;
+ case UNWIND_X86_64_REG_R13:
+ strcat(str, "r13");
+ break;
+ case UNWIND_X86_64_REG_R14:
+ strcat(str, "r14");
+ break;
+ case UNWIND_X86_64_REG_R15:
+ strcat(str, "r15");
+ break;
+ default:
+ strcat(str, "r?");
+ }
+ savedRegistersLocations = (savedRegistersLocations >> 3);
+ if ( savedRegistersLocations == 0 )
+ break;
+ }
+ }
+ }
+ break;
+ case UNWIND_X86_64_MODE_STACK_IMMD:
+ case UNWIND_X86_64_MODE_STACK_IND:
+ {
+ uint32_t stackSize = EXTRACT_BITS(encoding, UNWIND_X86_64_FRAMELESS_STACK_SIZE);
+ uint32_t stackAdjust = EXTRACT_BITS(encoding, UNWIND_X86_64_FRAMELESS_STACK_ADJUST);
+ uint32_t regCount = EXTRACT_BITS(encoding, UNWIND_X86_64_FRAMELESS_STACK_REG_COUNT);
+ uint32_t permutation = EXTRACT_BITS(encoding, UNWIND_X86_64_FRAMELESS_STACK_REG_PERMUTATION);
+ if ( (encoding & UNWIND_X86_64_MODE_MASK) == UNWIND_X86_64_MODE_STACK_IND ) {
+ // stack size is encoded in subl $xxx,%esp instruction
+ uint32_t subl = x86_64::P::E::get32(*((uint32_t*)(funcStart+stackSize)));
+ sprintf(str, "stack size=0x%08X, ", subl + 8*stackAdjust);
+ }
+ else {
+ sprintf(str, "stack size=%d, ", stackSize*8);
+ }
+ if ( regCount == 0 ) {
+ strcat(str, "no registers saved");
+ }
+ else {
+ int permunreg[6];
+ switch ( regCount ) {
+ case 6:
+ permunreg[0] = permutation/120;
+ permutation -= (permunreg[0]*120);
+ permunreg[1] = permutation/24;
+ permutation -= (permunreg[1]*24);
+ permunreg[2] = permutation/6;
+ permutation -= (permunreg[2]*6);
+ permunreg[3] = permutation/2;
+ permutation -= (permunreg[3]*2);
+ permunreg[4] = permutation;
+ permunreg[5] = 0;
+ break;
+ case 5:
+ permunreg[0] = permutation/120;
+ permutation -= (permunreg[0]*120);
+ permunreg[1] = permutation/24;
+ permutation -= (permunreg[1]*24);
+ permunreg[2] = permutation/6;
+ permutation -= (permunreg[2]*6);
+ permunreg[3] = permutation/2;
+ permutation -= (permunreg[3]*2);
+ permunreg[4] = permutation;
+ break;
+ case 4:
+ permunreg[0] = permutation/60;
+ permutation -= (permunreg[0]*60);
+ permunreg[1] = permutation/12;
+ permutation -= (permunreg[1]*12);
+ permunreg[2] = permutation/3;
+ permutation -= (permunreg[2]*3);
+ permunreg[3] = permutation;
+ break;
+ case 3:
+ permunreg[0] = permutation/20;
+ permutation -= (permunreg[0]*20);
+ permunreg[1] = permutation/4;
+ permutation -= (permunreg[1]*4);
+ permunreg[2] = permutation;
+ break;
+ case 2:
+ permunreg[0] = permutation/5;
+ permutation -= (permunreg[0]*5);
+ permunreg[1] = permutation;
+ break;
+ case 1:
+ permunreg[0] = permutation;
+ break;
+ }
+ // renumber registers back to standard numbers
+ int registers[6];
+ bool used[7] = { false, false, false, false, false, false, false };
+ for (int i=0; i < regCount; ++i) {
+ int renum = 0;
+ for (int u=1; u < 7; ++u) {
+ if ( !used[u] ) {
+ if ( renum == permunreg[i] ) {
+ registers[i] = u;
+ used[u] = true;
+ break;
+ }
+ ++renum;
+ }
+ }
+ }
+ bool needComma = false;
+ for (int i=0; i < regCount; ++i) {
+ if ( needComma )
+ strcat(str, ",");
+ else
+ needComma = true;
+ switch ( registers[i] ) {
+ case UNWIND_X86_64_REG_RBX:
+ strcat(str, "rbx");
+ break;
+ case UNWIND_X86_64_REG_R12:
+ strcat(str, "r12");
+ break;
+ case UNWIND_X86_64_REG_R13:
+ strcat(str, "r13");
+ break;
+ case UNWIND_X86_64_REG_R14:
+ strcat(str, "r14");
+ break;
+ case UNWIND_X86_64_REG_R15:
+ strcat(str, "r15");
+ break;
+ case UNWIND_X86_64_REG_RBP:
+ strcat(str, "rbp");
+ break;
+ default:
+ strcat(str, "r??");
+ }
+ }
+ }
+ }
+ break;
+ case UNWIND_X86_64_MODE_DWARF:
+ sprintf(str, "dwarf offset 0x%08X, ", encoding & UNWIND_X86_64_DWARF_SECTION_OFFSET);
+ break;
+ default:
+ if ( encoding == 0 )
+ strcat(str, "no unwind information");
+ else
+ strcat(str, "tbd ");
+ }
+ if ( encoding & UNWIND_HAS_LSDA ) {
+ strcat(str, " LSDA");
+ }
+
+}
+
+template <>
+void UnwindPrinter<x86>::decode(uint32_t encoding, const uint8_t* funcStart, char* str)
+{
+ *str = '\0';
+ switch ( encoding & UNWIND_X86_MODE_MASK ) {
+ case UNWIND_X86_MODE_EBP_FRAME:
+ {
+ uint32_t savedRegistersOffset = EXTRACT_BITS(encoding, UNWIND_X86_EBP_FRAME_OFFSET);
+ uint32_t savedRegistersLocations = EXTRACT_BITS(encoding, UNWIND_X86_EBP_FRAME_REGISTERS);
+ if ( savedRegistersLocations == 0 ) {
+ strcpy(str, "ebp frame, no saved registers");
+ }
+ else {
+ sprintf(str, "ebp frame, at -%d:", savedRegistersOffset*4);
+ bool needComma = false;
+ for (int i=0; i < 5; ++i) {
+ if ( needComma )
+ strcat(str, ",");
+ else
+ needComma = true;
+ switch (savedRegistersLocations & 0x7) {
+ case UNWIND_X86_REG_NONE:
+ strcat(str, "-");
+ break;
+ case UNWIND_X86_REG_EBX:
+ strcat(str, "ebx");
+ break;
+ case UNWIND_X86_REG_ECX:
+ strcat(str, "ecx");
+ break;
+ case UNWIND_X86_REG_EDX:
+ strcat(str, "edx");
+ break;
+ case UNWIND_X86_REG_EDI:
+ strcat(str, "edi");
+ break;
+ case UNWIND_X86_REG_ESI:
+ strcat(str, "esi");
+ break;
+ default:
+ strcat(str, "e??");
+ }
+ savedRegistersLocations = (savedRegistersLocations >> 3);
+ if ( savedRegistersLocations == 0 )
+ break;
+ }
+ }
+ }
+ break;
+ case UNWIND_X86_MODE_STACK_IMMD:
+ case UNWIND_X86_MODE_STACK_IND:
+ {
+ uint32_t stackSize = EXTRACT_BITS(encoding, UNWIND_X86_FRAMELESS_STACK_SIZE);
+ uint32_t stackAdjust = EXTRACT_BITS(encoding, UNWIND_X86_FRAMELESS_STACK_ADJUST);
+ uint32_t regCount = EXTRACT_BITS(encoding, UNWIND_X86_FRAMELESS_STACK_REG_COUNT);
+ uint32_t permutation = EXTRACT_BITS(encoding, UNWIND_X86_FRAMELESS_STACK_REG_PERMUTATION);
+ if ( (encoding & UNWIND_X86_MODE_MASK) == UNWIND_X86_MODE_STACK_IND ) {
+ // stack size is encoded in subl $xxx,%esp instruction
+ uint32_t subl = x86::P::E::get32(*((uint32_t*)(funcStart+stackSize)));
+ sprintf(str, "stack size=0x%08X, ", subl+4*stackAdjust);
+ }
+ else {
+ sprintf(str, "stack size=%d, ", stackSize*4);
+ }
+ if ( regCount == 0 ) {
+ strcat(str, "no saved regs");
+ }
+ else {
+ int permunreg[6];
+ switch ( regCount ) {
+ case 6:
+ permunreg[0] = permutation/120;
+ permutation -= (permunreg[0]*120);
+ permunreg[1] = permutation/24;
+ permutation -= (permunreg[1]*24);
+ permunreg[2] = permutation/6;
+ permutation -= (permunreg[2]*6);
+ permunreg[3] = permutation/2;
+ permutation -= (permunreg[3]*2);
+ permunreg[4] = permutation;
+ permunreg[5] = 0;
+ break;
+ case 5:
+ permunreg[0] = permutation/120;
+ permutation -= (permunreg[0]*120);
+ permunreg[1] = permutation/24;
+ permutation -= (permunreg[1]*24);
+ permunreg[2] = permutation/6;
+ permutation -= (permunreg[2]*6);
+ permunreg[3] = permutation/2;
+ permutation -= (permunreg[3]*2);
+ permunreg[4] = permutation;
+ break;
+ case 4:
+ permunreg[0] = permutation/60;
+ permutation -= (permunreg[0]*60);
+ permunreg[1] = permutation/12;
+ permutation -= (permunreg[1]*12);
+ permunreg[2] = permutation/3;
+ permutation -= (permunreg[2]*3);
+ permunreg[3] = permutation;
+ break;
+ case 3:
+ permunreg[0] = permutation/20;
+ permutation -= (permunreg[0]*20);
+ permunreg[1] = permutation/4;
+ permutation -= (permunreg[1]*4);
+ permunreg[2] = permutation;
+ break;
+ case 2:
+ permunreg[0] = permutation/5;
+ permutation -= (permunreg[0]*5);
+ permunreg[1] = permutation;
+ break;
+ case 1:
+ permunreg[0] = permutation;
+ break;
+ }
+ // renumber registers back to standard numbers
+ int registers[6];
+ bool used[7] = { false, false, false, false, false, false, false };
+ for (int i=0; i < regCount; ++i) {
+ int renum = 0;
+ for (int u=1; u < 7; ++u) {
+ if ( !used[u] ) {
+ if ( renum == permunreg[i] ) {
+ registers[i] = u;
+ used[u] = true;
+ break;
+ }
+ ++renum;
+ }
+ }
+ }
+ bool needComma = false;
+ for (int i=0; i < regCount; ++i) {
+ if ( needComma )
+ strcat(str, ",");
+ else
+ needComma = true;
+ switch ( registers[i] ) {
+ case UNWIND_X86_REG_EBX:
+ strcat(str, "ebx");
+ break;
+ case UNWIND_X86_REG_ECX:
+ strcat(str, "ecx");
+ break;
+ case UNWIND_X86_REG_EDX:
+ strcat(str, "edx");
+ break;
+ case UNWIND_X86_REG_EDI:
+ strcat(str, "edi");
+ break;
+ case UNWIND_X86_REG_ESI:
+ strcat(str, "esi");
+ break;
+ case UNWIND_X86_REG_EBP:
+ strcat(str, "ebp");
+ break;
+ default:
+ strcat(str, "e??");
+ }
+ }
+ }
+ }
+ break;
+ case UNWIND_X86_MODE_DWARF:
+ sprintf(str, "dwarf offset 0x%08X, ", encoding & UNWIND_X86_DWARF_SECTION_OFFSET);
+ break;
+ default:
+ if ( encoding == 0 )
+ strcat(str, "no unwind information");
+ else
+ strcat(str, "tbd ");
+ }
+ if ( encoding & UNWIND_HAS_LSDA ) {
+ strcat(str, " LSDA");
+ }
+
+}
+
+
+
+template <>
+const char* UnwindPrinter<x86_64>::personalityName(const macho_relocation_info<x86_64::P>* reloc)
+{
+ //assert(reloc->r_extern() && "reloc not extern on personality column in __compact_unwind section");
+ //assert((reloc->r_type() == X86_64_RELOC_UNSIGNED) && "wrong reloc type on personality column in __compact_unwind section");
+ const macho_nlist<P>& sym = fSymbols[reloc->r_symbolnum()];
+ return &fStrings[sym.n_strx()];
+}
+
+template <>
+const char* UnwindPrinter<x86>::personalityName(const macho_relocation_info<x86::P>* reloc)
+{
+ //assert(reloc->r_extern() && "reloc not extern on personality column in __compact_unwind section");
+ //assert((reloc->r_type() == GENERIC_RELOC_VANILLA) && "wrong reloc type on personality column in __compact_unwind section");
+ const macho_nlist<P>& sym = fSymbols[reloc->r_symbolnum()];
+ return &fStrings[sym.n_strx()];
+}
+
+template <typename A>
+bool UnwindPrinter<A>::hasExernReloc(uint64_t sectionOffset, const char** personalityStr, pint_t* addr)
+{
+ const macho_relocation_info<P>* relocs = (macho_relocation_info<P>*)((uint8_t*)fHeader + fUnwindSection->reloff());
+ const macho_relocation_info<P>* relocsEnd = &relocs[fUnwindSection->nreloc()];
+ for (const macho_relocation_info<P>* reloc = relocs; reloc < relocsEnd; ++reloc) {
+ if ( reloc->r_extern() && (reloc->r_address() == sectionOffset) ) {
+ *personalityStr = this->personalityName(reloc);
+ if ( addr != NULL )
+ *addr = fSymbols[reloc->r_symbolnum()].n_value();
+ return true;
+ }
+ }
+ return false;
+}
+
+
+template <typename A>
+void UnwindPrinter<A>::printObjectUnwindSection(bool showFunctionNames)
+{
+ printf("Arch: %s, Section: __LD,__compact_unwind (size=0x%08llX, => %lld entries)\n",
+ archName(), fUnwindSection->size(), fUnwindSection->size() / sizeof(macho_compact_unwind_entry<P>));
+
+ const macho_compact_unwind_entry<P>* const entriesStart = (macho_compact_unwind_entry<P>*)((uint8_t*)fHeader + fUnwindSection->offset());
+ const macho_compact_unwind_entry<P>* const entriesEnd = (macho_compact_unwind_entry<P>*)((uint8_t*)fHeader + fUnwindSection->offset() + fUnwindSection->size());
+ for (const macho_compact_unwind_entry<P>* entry=entriesStart; entry < entriesEnd; ++entry) {
+ uint64_t entryAddress = ((char*)entry - (char*)entriesStart) + fUnwindSection->addr();
+ printf("0x%08llX:\n", entryAddress);
+ const char* functionNameStr;
+ pint_t funcAddress;
+ uint32_t offsetInFunction;
+ if ( hasExernReloc(((char*)entry-(char*)entriesStart)+macho_compact_unwind_entry<P>::codeStartFieldOffset(), &functionNameStr, &funcAddress) ) {
+ offsetInFunction = entry->codeStart();
+ }
+ else {
+ functionNameStr = this->functionName(entry->codeStart(), &offsetInFunction);
+ }
+ if ( offsetInFunction == 0 )
+ printf(" start: 0x%08llX %s\n", (uint64_t)funcAddress, functionNameStr);
+ else
+ printf(" start: 0x%08llX %s+0x%X\n", (uint64_t)funcAddress+offsetInFunction, functionNameStr, offsetInFunction);
+
+ printf(" end: 0x%08llX (len=0x%08X)\n", (uint64_t)(funcAddress+offsetInFunction+entry->codeLen()), entry->codeLen());
+
+ char encodingString[200];
+ this->decode(entry->compactUnwindInfo(), ((const uint8_t*)fHeader), encodingString);
+ printf(" unwind info: 0x%08X %s\n", entry->compactUnwindInfo(), encodingString);
+
+ const char* personalityNameStr;
+ if ( hasExernReloc(((char*)entry-(char*)entriesStart)+macho_compact_unwind_entry<P>::personalityFieldOffset(), &personalityNameStr) ) {
+ printf(" personality: %s\n", personalityNameStr);
+ }
+ else {
+ printf(" personality:\n");
+ }
+ if ( entry->lsda() == 0 ) {
+ printf(" lsda:\n");
+ }
+ else {
+ uint32_t lsdaOffset;
+ const char* lsdaName = this->functionName(entry->lsda(), &lsdaOffset);
+ if ( lsdaOffset == 0 )
+ printf(" lsda: 0x%08llX %s\n", (uint64_t)entry->lsda(), lsdaName);
+ else
+ printf(" lsda: 0x%08llX %s+0x%X\n", (uint64_t)entry->lsda(), lsdaName, lsdaOffset);
+ }
+ }
+
+}
template <typename A>
-void UnwindPrinter<A>::printUnwindSection()
+void UnwindPrinter<A>::printUnwindSection(bool showFunctionNames)
{
const uint8_t* sectionContent = (uint8_t*)fHeader + fUnwindSection->offset();
macho_unwind_info_section_header<P>* sectionHeader = (macho_unwind_info_section_header<P>*)(sectionContent);
printf("\tcommon encodings: (count=%u)\n", sectionHeader->commonEncodingsArrayCount());
const uint32_t* commonEncodings = (uint32_t*)§ionContent[sectionHeader->commonEncodingsArraySectionOffset()];
for (uint32_t i=0; i < sectionHeader->commonEncodingsArrayCount(); ++i) {
- printf("\t\tencoding[%2u]=0x%08X\n", i, A::P::E::get32(commonEncodings[i]));
+ printf("\t\tencoding[%3u]=0x%08X\n", i, A::P::E::get32(commonEncodings[i]));
}
printf("\tpersonalities: (count=%u)\n", sectionHeader->personalityArrayCount());
const uint32_t* personalityArray = (uint32_t*)§ionContent[sectionHeader->personalityArraySectionOffset()];
printf("\tLSDA table: (section offset 0x%08X, count=%u)\n", lsdaIndexArraySectionOffset, lsdaIndexArrayCount);
macho_unwind_info_section_header_lsda_index_entry<P>* lindex = (macho_unwind_info_section_header_lsda_index_entry<P>*)§ionContent[lsdaIndexArraySectionOffset];
for (uint32_t i=0; i < lsdaIndexArrayCount; ++i) {
- printf("\t\t[%3u] funcOffset=0x%08X, lsdaOffset=0x%08X, %s\n",
- i, lindex[i].functionOffset(), lindex[i].lsdaOffset(), functionName(lindex[i].functionOffset()+fMachHeaderAddress));
+ const char* name = showFunctionNames ? functionName(lindex[i].functionOffset()+fMachHeaderAddress) : "";
+ printf("\t\t[%3u] funcOffset=0x%08X, lsdaOffset=0x%08X, %s\n", i, lindex[i].functionOffset(), lindex[i].lsdaOffset(), name);
if ( *(((uint8_t*)fHeader) + lindex[i].lsdaOffset()) != 0xFF )
fprintf(stderr, "BAD LSDA entry (does not start with 0xFF) for %s\n", functionName(lindex[i].functionOffset()+fMachHeaderAddress));
}
printf("\t\tentryCount=0x%08X\n", page->entryCount());
const macho_unwind_info_regular_second_level_entry<P>* entry = (macho_unwind_info_regular_second_level_entry<P>*)((char*)page+page->entryPageOffset());
for (uint32_t j=0; j < page->entryCount(); ++j) {
+ uint32_t funcOffset = entry[j].functionOffset();
if ( entry[j].encoding() & UNWIND_HAS_LSDA ) {
// verify there is a corresponding entry in lsda table
bool found = false;
- uint32_t funcOffset = entry[j].functionOffset();
for (uint32_t k=0; k < lsdaIndexArrayCount; ++k) {
if ( lindex[k].functionOffset() == funcOffset ) {
found = true;
fprintf(stderr, "MISSING LSDA entry for %s\n", functionName(funcOffset+fMachHeaderAddress));
}
}
- printf("\t\t\t[%3u] funcOffset=0x%08X, encoding=0x%08X %s\n",
- j, entry[j].functionOffset(), entry[j].encoding(), functionName(entry[j].functionOffset()+fMachHeaderAddress));
+ char encodingString[100];
+ decode(entry[j].encoding(), ((const uint8_t*)fHeader)+funcOffset, encodingString);
+ const char* name = showFunctionNames ? functionName(funcOffset+fMachHeaderAddress) : "";
+ printf("\t\t\t[%3u] funcOffset=0x%08X, encoding=0x%08X (%-40s) %s\n",
+ j, funcOffset, entry[j].encoding(), encodingString, name);
}
}
else if ( page->kind() == UNWIND_SECOND_LEVEL_COMPRESSED ) {
encoding = A::P::E::get32(commonEncodings[encodingIndex]);
else
encoding = A::P::E::get32(encodings[encodingIndex-sectionHeader->commonEncodingsArrayCount()]);
+ char encodingString[100];
uint32_t funcOff = UNWIND_INFO_COMPRESSED_ENTRY_FUNC_OFFSET(entries[j])+baseFunctionOffset;
- const char* name = functionName(funcOff+fMachHeaderAddress);
+ decode(encoding, ((const uint8_t*)fHeader)+funcOff, encodingString);
+ const char* name = showFunctionNames ? functionName(funcOff+fMachHeaderAddress) : "";
if ( encoding & UNWIND_HAS_LSDA ) {
// verify there is a corresponding entry in lsda table
bool found = false;
fprintf(stderr, "MISSING LSDA entry for %s\n", name);
}
}
- printf("\t\t\t[%3u] funcOffset=0x%08X, encoding[%2u]=0x%08X %s\n",
- j, funcOff, encodingIndex, encoding, name);
+ printf("\t\t\t[%3u] funcOffset=0x%08X, encoding[%3u]=0x%08X (%-40s) %s\n",
+ j, funcOff, encodingIndex, encoding, encodingString, name);
}
}
else {
}
-static void dump(const char* path, const std::set<cpu_type_t>& onlyArchs)
+static void dump(const char* path, const std::set<cpu_type_t>& onlyArchs, bool showFunctionNames)
{
struct stat stat_buf;
unsigned int cputype = OSSwapBigToHostInt32(archs[i].cputype);
if ( onlyArchs.count(cputype) ) {
switch(cputype) {
- case CPU_TYPE_POWERPC:
- if ( UnwindPrinter<ppc>::validFile(p + offset) )
- UnwindPrinter<ppc>::make(p + offset, size, path);
- else
- throw "in universal file, ppc slice does not contain ppc mach-o";
- break;
case CPU_TYPE_I386:
if ( UnwindPrinter<x86>::validFile(p + offset) )
- UnwindPrinter<x86>::make(p + offset, size, path);
+ UnwindPrinter<x86>::make(p + offset, size, path, showFunctionNames);
else
throw "in universal file, i386 slice does not contain i386 mach-o";
break;
- case CPU_TYPE_POWERPC64:
- if ( UnwindPrinter<ppc64>::validFile(p + offset) )
- UnwindPrinter<ppc64>::make(p + offset, size, path);
- else
- throw "in universal file, ppc64 slice does not contain ppc64 mach-o";
- break;
case CPU_TYPE_X86_64:
if ( UnwindPrinter<x86_64>::validFile(p + offset) )
- UnwindPrinter<x86_64>::make(p + offset, size, path);
+ UnwindPrinter<x86_64>::make(p + offset, size, path, showFunctionNames);
else
throw "in universal file, x86_64 slice does not contain x86_64 mach-o";
break;
- case CPU_TYPE_ARM:
- if ( UnwindPrinter<arm>::validFile(p + offset) )
- UnwindPrinter<arm>::make(p + offset, size, path);
- else
- throw "in universal file, arm slice does not contain arm mach-o";
- break;
default:
throwf("in universal file, unknown architecture slice 0x%x\n", cputype);
}
}
}
else if ( UnwindPrinter<x86>::validFile(p) && onlyArchs.count(CPU_TYPE_I386) ) {
- UnwindPrinter<x86>::make(p, length, path);
- }
- else if ( UnwindPrinter<ppc>::validFile(p) && onlyArchs.count(CPU_TYPE_POWERPC) ) {
- UnwindPrinter<ppc>::make(p, length, path);
- }
- else if ( UnwindPrinter<ppc64>::validFile(p) && onlyArchs.count(CPU_TYPE_POWERPC64) ) {
- UnwindPrinter<ppc64>::make(p, length, path);
+ UnwindPrinter<x86>::make(p, length, path, showFunctionNames);
}
else if ( UnwindPrinter<x86_64>::validFile(p) && onlyArchs.count(CPU_TYPE_X86_64) ) {
- UnwindPrinter<x86_64>::make(p, length, path);
- }
- else if ( UnwindPrinter<arm>::validFile(p) && onlyArchs.count(CPU_TYPE_ARM) ) {
- UnwindPrinter<arm>::make(p, length, path);
+ UnwindPrinter<x86_64>::make(p, length, path, showFunctionNames);
}
else {
throw "not a known file type";
{
std::set<cpu_type_t> onlyArchs;
std::vector<const char*> files;
+ bool showFunctionNames = true;
try {
for(int i=1; i < argc; ++i) {
if ( arg[0] == '-' ) {
if ( strcmp(arg, "-arch") == 0 ) {
const char* arch = argv[++i];
- if ( strcmp(arch, "ppc") == 0 )
- onlyArchs.insert(CPU_TYPE_POWERPC);
- else if ( strcmp(arch, "ppc64") == 0 )
- onlyArchs.insert(CPU_TYPE_POWERPC64);
- else if ( strcmp(arch, "i386") == 0 )
+ if ( strcmp(arch, "i386") == 0 )
onlyArchs.insert(CPU_TYPE_I386);
else if ( strcmp(arch, "x86_64") == 0 )
onlyArchs.insert(CPU_TYPE_X86_64);
- else if ( strcmp(arch, "arm") == 0 )
- onlyArchs.insert(CPU_TYPE_ARM);
else
throwf("unknown architecture %s", arch);
}
+ else if ( strcmp(arg, "-no_symbols") == 0 ) {
+ showFunctionNames = false;
+ }
else {
throwf("unknown option: %s\n", arg);
}
// use all architectures if no restrictions specified
if ( onlyArchs.size() == 0 ) {
- onlyArchs.insert(CPU_TYPE_POWERPC);
- onlyArchs.insert(CPU_TYPE_POWERPC64);
onlyArchs.insert(CPU_TYPE_I386);
onlyArchs.insert(CPU_TYPE_X86_64);
- onlyArchs.insert(CPU_TYPE_ARM);
}
// process each file
for(std::vector<const char*>::iterator it=files.begin(); it != files.end(); ++it) {
- dump(*it, onlyArchs);
+ dump(*it, onlyArchs, showFunctionNames);
}
}
projects / apple / ld64.git / blobdiff