diff options
Diffstat (limited to 'libgo/runtime/go-callers.c')
| -rw-r--r-- | libgo/runtime/go-callers.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/libgo/runtime/go-callers.c b/libgo/runtime/go-callers.c index 33956ca4dfc..31783696a08 100644 --- a/libgo/runtime/go-callers.c +++ b/libgo/runtime/go-callers.c @@ -364,3 +364,39 @@ runtime_callersRaw (uintptr *pcbuf, int32 m) return data.index; } +/* runtime_pcInlineCallers returns the inline stack of calls for a PC. + This is like runtime_callers, but instead of doing a backtrace, + just finds the information for a single PC value. */ + +int32 runtime_pcInlineCallers (uintptr, Location *, int32) + __asm__ (GOSYM_PREFIX "runtime.pcInlineCallers"); + +int32 +runtime_pcInlineCallers (uintptr pc, Location *locbuf, int32 m) +{ + struct callers_data data; + struct backtrace_state *state; + int32 i; + + data.locbuf = locbuf; + data.skip = 0; + data.index = 0; + data.max = m; + data.keep_thunks = false; + data.saw_sigtramp = 0; + runtime_xadd (&__go_runtime_in_callers, 1); + state = __go_get_backtrace_state (); + backtrace_pcinfo (state, pc, callback, error_callback, &data); + runtime_xadd (&__go_runtime_in_callers, -1); + + /* Try to use backtrace_syminfo to fill in missing names. See + runtime_callers. */ + for (i = 0; i < data.index; ++i) + { + if (locbuf[i].function.len == 0 && locbuf[i].pc != 0) + backtrace_syminfo (state, locbuf[i].pc, __go_syminfo_fnname_callback, + error_callback, &locbuf[i].function); + } + + return data.index; +} |