blob: 667ea4c0cfd70fc00229cd04e24f9cbe8252ab9b [file] [log] [blame]
// Copyright 2016 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build cgo
// +build linux
#include <stdint.h>
struct cgoTracebackArg {
uintptr_t Context;
uintptr_t SigContext;
uintptr_t* Buf;
uintptr_t Max;
// Call the user's traceback function and then call sigtramp.
// The runtime signal handler will jump to this code.
// We do it this way so that the user's traceback function will be called
// by a C function with proper unwind info.
x_cgo_callers(uintptr_t sig, void *info, void *context, void (*cgoTraceback)(struct cgoTracebackArg*), uintptr_t* cgoCallers, void (*sigtramp)(uintptr_t, void*, void*)) {
struct cgoTracebackArg arg;
arg.Context = 0;
arg.SigContext = (uintptr_t)(context);
arg.Buf = cgoCallers;
arg.Max = 32; // must match len(runtime.cgoCallers)
sigtramp(sig, info, context);