63 lines
1.2 KiB
C
63 lines
1.2 KiB
C
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/* go-traceback.c -- stack backtrace for Go.
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Copyright 2012 The Go Authors. All rights reserved.
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Use of this source code is governed by a BSD-style
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license that can be found in the LICENSE file. */
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#include "config.h"
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#include "unwind.h"
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#include "runtime.h"
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#include "go-string.h"
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static _Unwind_Reason_Code
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traceback (struct _Unwind_Context *context, void *varg)
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{
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int *parg = (int *) varg;
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uintptr pc;
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int ip_before_insn = 0;
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struct __go_string fn;
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struct __go_string file;
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int line;
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#ifdef HAVE_GETIPINFO
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pc = _Unwind_GetIPInfo (context, &ip_before_insn);
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#else
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pc = _Unwind_GetIP (context);
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#endif
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if (*parg > 100)
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return _URC_END_OF_STACK;
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++*parg;
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/* FIXME: If PC is in the __morestack routine, we should ignore
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it. */
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/* Back up to the call instruction. */
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if (!ip_before_insn)
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--pc;
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if (!__go_file_line (pc, &fn, &file, &line))
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return _URC_END_OF_STACK;
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if (runtime_showframe (fn.__data))
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{
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runtime_printf ("%s\n", fn.__data);
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runtime_printf ("\t%s:%d\n", file.__data, line);
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}
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return _URC_NO_REASON;
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}
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/* Print a stack trace for the current goroutine. */
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void
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runtime_traceback ()
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{
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int c;
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c = 0;
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_Unwind_Backtrace (traceback, &c);
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}
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