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Diffstat (limited to 'src/processor/stackwalker_amd64.h')
| -rw-r--r-- | src/processor/stackwalker_amd64.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/processor/stackwalker_amd64.h b/src/processor/stackwalker_amd64.h index 8f3dbd52..67c45510 100644 --- a/src/processor/stackwalker_amd64.h +++ b/src/processor/stackwalker_amd64.h @@ -78,6 +78,14 @@ class StackwalkerAMD64 : public Stackwalker { StackFrameAMD64* GetCallerByCFIFrameInfo(const vector<StackFrame*> &frames, CFIFrameInfo* cfi_frame_info); + // Checks whether end-of-stack is reached. An instruction address of 0 is an + // end-of-stack marker. If the stack pointer of the caller is at a lower + // address than the stack pointer of the callee, then that's clearly incorrect + // and it is treated as end-of-stack to enforce progress and avoid infinite + // loops. + bool IsEndOfStack(uint64_t caller_rip, uint64_t caller_rsp, + uint64_t callee_rsp); + // Assumes a traditional frame layout where the frame pointer has not been // omitted. The expectation is that caller's %rbp is pushed to the stack // after the return address of the callee, and that the callee's %rsp can |