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go/src/runtime/sys_x86.go
Sebastien Binet f09a3d8223 runtime: fix documentation typo for gostartcall
This CL is a simple doc typo fix, uncovered while reviewing the go-wasm
port.

Change-Id: I0fce915c341aaaea3a7cc365819abbc5f2c468c3
Reviewed-on: https://go-review.googlesource.com/80715
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2017-11-29 18:42:49 +00:00

28 lines
633 B
Go

// 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.
// +build amd64 amd64p32 386
package runtime
import (
"runtime/internal/sys"
"unsafe"
)
// adjust Gobuf as if it executed a call to fn with context ctxt
// and then did an immediate gosave.
func gostartcall(buf *gobuf, fn, ctxt unsafe.Pointer) {
sp := buf.sp
if sys.RegSize > sys.PtrSize {
sp -= sys.PtrSize
*(*uintptr)(unsafe.Pointer(sp)) = 0
}
sp -= sys.PtrSize
*(*uintptr)(unsafe.Pointer(sp)) = buf.pc
buf.sp = sp
buf.pc = uintptr(fn)
buf.ctxt = ctxt
}