| // Copyright 2013 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. |
| |
| //go:build amd64 || 386 |
| |
| package runtime |
| |
| import ( |
| "internal/goarch" |
| "unsafe" |
| ) |
| |
| // adjust Gobuf as if it executed a call to fn with context ctxt |
| // and then stopped before the first instruction in fn. |
| func gostartcall(buf *gobuf, fn, ctxt unsafe.Pointer) { |
| sp := buf.sp |
| sp -= goarch.PtrSize |
| *(*uintptr)(unsafe.Pointer(sp)) = buf.pc |
| buf.sp = sp |
| buf.pc = uintptr(fn) |
| buf.ctxt = ctxt |
| } |
