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Add code to llvm-objdump so the -section option with -macho will dump ‘C’ string 

sections with the Mach-O S_CSTRING_LITERALS section type.

llvm-svn: 228198
This commit is contained in:
Kevin Enderby 2015-02-04 21:38:42 +00:00
parent a092f17580
commit 10ba041188
2 changed files with 26 additions and 0 deletions
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4
llvm/test/tools/llvm-objdump/X86/macho-cstring-dump.test Normal file
View File

@ -0,0 +1,4 @@
RUN: llvm-objdump -m -section __TEXT,__cstring %p/Inputs/hello.obj.macho-x86_64 | FileCheck %s
CHECK: Contents of (__TEXT,__cstring) section
CHECK: 0x000000000000003b Hello world\n

22
llvm/tools/llvm-objdump/MachODump.cpp
View File

@ -537,6 +537,25 @@ static const char *GuessSymbolName(uint64_t value, SymbolAddressMap *AddrMap) {
return SymbolName;
}
static void DumpCstringSection(MachOObjectFile *O, const char *sect,
uint32_t sect_size, uint64_t sect_addr,
bool verbose) {
for (uint32_t i = 0; i < sect_size; i++) {
if (O->is64Bit())
outs() << format("0x%016" PRIx64, sect_addr + i) << " ";
else
outs() << format("0x%08" PRIx64, sect_addr + i) << " ";
for ( ; i < sect_size && sect[i] != '\0'; i++) {
char p[2];
p[0] = sect[i];
p[1] = '\0';
outs().write_escaped(p);
}
if (i < sect_size && sect[i] == '\0')
outs() << "\n";
}
}
static void DumpInitTermPointerSection(MachOObjectFile *O, const char *sect,
uint32_t sect_size, uint64_t sect_addr,
SymbolAddressMap *AddrMap,
@ -676,6 +695,9 @@ static void DumpSectionContents(StringRef Filename, MachOObjectFile *O,
case MachO::S_ZEROFILL:
outs() << "zerofill section and has no contents in the file\n";
break;
case MachO::S_CSTRING_LITERALS:
DumpCstringSection(O, sect, sect_size, sect_addr, verbose);
break;
case MachO::S_MOD_INIT_FUNC_POINTERS:
case MachO::S_MOD_TERM_FUNC_POINTERS:
DumpInitTermPointerSection(O, sect, sect_size, sect_addr, &AddrMap,