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Commit 82ace16b authored by Christopher Ferris's avatar Christopher Ferris Committed by Automerger Merge Worker
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Merge "Fix x86_64 check for signal handler." am: 36991d8e am: 0a8f898e am:... 

Merge "Fix x86_64 check for signal handler." am: 36991d8e am: 0a8f898e am: fb5b39c2 am: b49ffd6f

Original change: https://android-review.googlesource.com/c/platform/system/core/+/1430216

Change-Id: I92cbe86191c009334015e979fa331dc5bddb0e5f
parents 428663ba b49ffd6f

libunwindstack/RegsX86_64.cpp

+2 −3
Original line number Diff line number Diff line
@@ -141,15 +141,14 @@ bool RegsX86_64::StepIfSignalHandler(uint64_t elf_offset, Elf* elf, Memory* proc 
    return false;

  }



  uint16_t data2;

  if (!elf_memory->ReadFully(elf_offset + 8, &data2, sizeof(data2)) || data2 != 0x0f05) {

  uint8_t data2;

  if (!elf_memory->ReadFully(elf_offset + 8, &data2, sizeof(data2)) || data2 != 0x05) {

    return false;

  }



  // __restore_rt:

  // 0x48 0xc7 0xc0 0x0f 0x00 0x00 0x00   mov $0xf,%rax

  // 0x0f 0x05                            syscall

  // 0x0f                                 nopl 0x0($rax)



  // Read the mcontext data from the stack.

  // sp points to the ucontext data structure, read only the mcontext part.