diff options
Diffstat (limited to 'src/runtime/traceback.go')
| -rw-r--r-- | src/runtime/traceback.go | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/runtime/traceback.go b/src/runtime/traceback.go index 36627a6735..73bd0e11a9 100644 --- a/src/runtime/traceback.go +++ b/src/runtime/traceback.go @@ -96,6 +96,20 @@ func gentraceback(pc0, sp0, lr0 uintptr, gp *g, skip int, pcbuf *uintptr, max in } } + // runtime/internal/atomic functions call into kernel helpers on + // arm < 7. See runtime/internal/atomic/sys_linux_arm.s. + // + // Start in the caller's frame. + if GOARCH == "arm" && goarm < 7 && GOOS == "linux" && frame.pc&0xffff0000 == 0xffff0000 { + // Note that the calls are simple BL without pushing the return + // address, so we use LR directly. + // + // The kernel helpers are frameless leaf functions, so SP and + // LR are not touched. + frame.pc = frame.lr + frame.lr = 0 + } + f := findfunc(frame.pc) if !f.valid() { if callback != nil || printing { |