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Commit f60d4f9a authored by Christopher Ferris's avatar Christopher Ferris Committed by Gerrit Code Review
Browse files

Merge "libunwindstack: expose static version of BuildFrameFromPcOnly."

parents 86f19217 0d0f3236

libunwindstack/Unwinder.cpp

+14 −8
Original line number Diff line number Diff line
@@ -397,19 +397,20 @@ bool UnwinderFromPid::Init(ArchEnum arch) { 
  return true;

}



FrameData Unwinder::BuildFrameFromPcOnly(uint64_t pc) {

FrameData Unwinder::BuildFrameFromPcOnly(uint64_t pc, ArchEnum arch, Maps* maps,

                                         JitDebug* jit_debug,

                                         std::shared_ptr<Memory> process_memory,

                                         bool resolve_names) {

  FrameData frame;



  Maps* maps = GetMaps();

  MapInfo* map_info = maps->Find(pc);

  if (map_info == nullptr || regs_ == nullptr) {

  if (map_info == nullptr || arch == ARCH_UNKNOWN) {

    frame.pc = pc;

    frame.rel_pc = pc;

    return frame;

  }



  ArchEnum arch = regs_->Arch();

  Elf* elf = map_info->GetElf(GetProcessMemory(), arch);

  Elf* elf = map_info->GetElf(process_memory, arch);



  uint64_t relative_pc = elf->GetRelPc(pc, map_info);
@@ -419,9 +420,9 @@ FrameData Unwinder::BuildFrameFromPcOnly(uint64_t pc) { 
  uint64_t debug_pc = relative_pc;



  // If we don't have a valid ELF file, check the JIT.

  if (!elf->valid() && jit_debug_ != nullptr) {

  if (!elf->valid() && jit_debug != nullptr) {

    uint64_t jit_pc = pc - pc_adjustment;

    Elf* jit_elf = jit_debug_->GetElf(maps, jit_pc);

    Elf* jit_elf = jit_debug->GetElf(maps, jit_pc);

    if (jit_elf != nullptr) {

      debug_pc = jit_pc;

      elf = jit_elf;
@@ -439,7 +440,7 @@ FrameData Unwinder::BuildFrameFromPcOnly(uint64_t pc) { 
  frame.map_flags = map_info->flags;

  frame.map_load_bias = elf->GetLoadBias();



  if (!resolve_names_ ||

  if (!resolve_names ||

      !elf->GetFunctionName(debug_pc, &frame.function_name, &frame.function_offset)) {

    frame.function_name = "";

    frame.function_offset = 0;
@@ -447,4 +448,9 @@ FrameData Unwinder::BuildFrameFromPcOnly(uint64_t pc) { 
  return frame;

}



FrameData Unwinder::BuildFrameFromPcOnly(uint64_t pc) {

  return BuildFrameFromPcOnly(pc, regs_ ? regs_->Arch() : ARCH_UNKNOWN, maps_, jit_debug_,

                              process_memory_, resolve_names_);

}



}  // namespace unwindstack

libunwindstack/include/unwindstack/Unwinder.h

+2 −0
Original line number Diff line number Diff line
@@ -120,6 +120,8 @@ class Unwinder { 
  // frames collected by frame-pointer unwinding that's done outside of

  // libunwindstack. This is used by tombstoned to symbolize frame pointer-based

  // stack traces that are collected by tools such as GWP-ASan and MTE.

  static FrameData BuildFrameFromPcOnly(uint64_t pc, ArchEnum arch, Maps* maps, JitDebug* jit_debug,

                                        std::shared_ptr<Memory> process_memory, bool resolve_names);

  FrameData BuildFrameFromPcOnly(uint64_t pc);



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