diff options
Diffstat (limited to 'libunwindstack/ElfInterface.cpp')
| -rw-r--r-- | libunwindstack/ElfInterface.cpp | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/libunwindstack/ElfInterface.cpp b/libunwindstack/ElfInterface.cpp index 9bdb094..334cf76 100644 --- a/libunwindstack/ElfInterface.cpp +++ b/libunwindstack/ElfInterface.cpp @@ -148,6 +148,26 @@ bool ElfInterface::ReadAllHeaders(uint64_t* load_bias) { } template <typename EhdrType, typename PhdrType> +uint64_t ElfInterface::GetLoadBias(Memory* memory) { + EhdrType ehdr; + if (!memory->Read(0, &ehdr, sizeof(ehdr))) { + return false; + } + + uint64_t offset = ehdr.e_phoff; + for (size_t i = 0; i < ehdr.e_phnum; i++, offset += ehdr.e_phentsize) { + PhdrType phdr; + if (!memory->Read(offset, &phdr, sizeof(phdr))) { + return 0; + } + if (phdr.p_type == PT_LOAD && phdr.p_offset == 0) { + return phdr.p_vaddr; + } + } + return 0; +} + +template <typename EhdrType, typename PhdrType> bool ElfInterface::ReadProgramHeaders(const EhdrType& ehdr, uint64_t* load_bias) { uint64_t offset = ehdr.e_phoff; for (size_t i = 0; i < ehdr.e_phnum; i++, offset += ehdr.e_phentsize) { @@ -421,4 +441,7 @@ template bool ElfInterface::GetFunctionNameWithTemplate<Elf64_Sym>(uint64_t, uin template void ElfInterface::GetMaxSizeWithTemplate<Elf32_Ehdr>(Memory*, uint64_t*); template void ElfInterface::GetMaxSizeWithTemplate<Elf64_Ehdr>(Memory*, uint64_t*); +template uint64_t ElfInterface::GetLoadBias<Elf32_Ehdr, Elf32_Phdr>(Memory*); +template uint64_t ElfInterface::GetLoadBias<Elf64_Ehdr, Elf64_Phdr>(Memory*); + } // namespace unwindstack |