Merge "Verify that the elf matches the expected arch." am: b31badf70f am: bc2a0e3049 (d9bbc31e) · Commits · e / os / android_system_core

libbacktrace/UnwindStack.cpp

+1 −0

Original line number	Diff line number	Diff line
		@@ -49,6 +49,7 @@ bool Backtrace::Unwind(unwindstack::Regs* regs, BacktraceMap* back_map,
		unwindstack::Unwinder unwinder(MAX_BACKTRACE_FRAMES + num_ignore_frames, stack_map->stack_maps(),
		regs, stack_map->process_memory());
		unwinder.SetResolveNames(stack_map->ResolveNames());
		stack_map->SetArch(regs->Arch());
		if (stack_map->GetJitDebug() != nullptr) {
		unwinder.SetJitDebug(stack_map->GetJitDebug(), regs->Arch());
		}

+12 −1

Original line number	Diff line number	Diff line
		@@ -25,6 +25,7 @@
		#include <unwindstack/Elf.h>
		#include <unwindstack/MapInfo.h>
		#include <unwindstack/Maps.h>
		#include <unwindstack/Regs.h>

		#include "UnwindStackMap.h"

		@@ -106,7 +107,17 @@ std::string UnwindStackMap::GetFunctionName(uint64_t pc, uint64_t* offset) {
		return "";
		}

		unwindstack::Elf* elf = map_info->GetElf(process_memory());
		if (arch_ == unwindstack::ARCH_UNKNOWN) {
		if (pid_ == getpid()) {
		arch_ = unwindstack::Regs::CurrentArch();
		} else {
		// Create a remote regs, to figure out the architecture.
		std::unique_ptr<unwindstack::Regs> regs(unwindstack::Regs::RemoteGet(pid_));
		arch_ = regs->Arch();
		}
		}

		unwindstack::Elf* elf = map_info->GetElf(process_memory(), arch_);

		std::string name;
		uint64_t func_offset;

+5 −0

Original line number	Diff line number	Diff line
		@@ -30,6 +30,7 @@
		#if !defined(NO_LIBDEXFILE_SUPPORT)
		#include <unwindstack/DexFiles.h>
		#endif
		#include <unwindstack/Elf.h>
		#include <unwindstack/JitDebug.h>
		#include <unwindstack/Maps.h>

		@@ -58,6 +59,8 @@ class UnwindStackMap : public BacktraceMap {
		unwindstack::DexFiles* GetDexFiles() { return dex_files_.get(); }
		#endif

		void SetArch(unwindstack::ArchEnum arch) { arch_ = arch; }

		protected:
		uint64_t GetLoadBias(size_t index) override;

		@@ -67,6 +70,8 @@ class UnwindStackMap : public BacktraceMap {
		#if !defined(NO_LIBDEXFILE_SUPPORT)
		std::unique_ptr<unwindstack::DexFiles> dex_files_;
		#endif

		unwindstack::ArchEnum arch_ = unwindstack::ARCH_UNKNOWN;
		};

		class UnwindStackOfflineMap : public UnwindStackMap {

+2 −2

Original line number	Diff line number	Diff line
		@@ -54,8 +54,8 @@ DexFiles::~DexFiles() {
		}
		}

		void DexFiles::SetArch(ArchEnum arch) {
		switch (arch) {
		void DexFiles::ProcessArch() {
		switch (arch()) {
		case ARCH_ARM:
		case ARCH_MIPS:
		case ARCH_X86:

+5 −0

Original line number	Diff line number	Diff line
		@@ -88,6 +88,11 @@ void Elf::InitGnuDebugdata() {
		}
		}

		void Elf::Invalidate() {
		interface_.reset(nullptr);
		valid_ = false;
		}

		bool Elf::GetSoname(std::string* name) {
		std::lock_guard<std::mutex> guard(lock_);
		return valid_ && interface_->GetSoname(name);