mirror of
https://github.com/autc04/Retro68.git
synced 2024-09-08 20:55:01 +00:00
56 lines
1.4 KiB
Go
56 lines
1.4 KiB
Go
|
// Copyright 2015 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 msan
|
||
|
|
||
|
package runtime
|
||
|
|
||
|
import (
|
||
|
"unsafe"
|
||
|
)
|
||
|
|
||
|
// Public memory sanitizer API.
|
||
|
|
||
|
func MSanRead(addr unsafe.Pointer, len int) {
|
||
|
msanread(addr, uintptr(len))
|
||
|
}
|
||
|
|
||
|
func MSanWrite(addr unsafe.Pointer, len int) {
|
||
|
msanwrite(addr, uintptr(len))
|
||
|
}
|
||
|
|
||
|
// Private interface for the runtime.
|
||
|
const msanenabled = true
|
||
|
|
||
|
// If we are running on the system stack, the C program may have
|
||
|
// marked part of that stack as uninitialized. We don't instrument
|
||
|
// the runtime, but operations like a slice copy can call msanread
|
||
|
// anyhow for values on the stack. Just ignore msanread when running
|
||
|
// on the system stack. The other msan functions are fine.
|
||
|
func msanread(addr unsafe.Pointer, sz uintptr) {
|
||
|
g := getg()
|
||
|
if g == g.m.g0 || g == g.m.gsignal {
|
||
|
return
|
||
|
}
|
||
|
domsanread(addr, sz)
|
||
|
}
|
||
|
|
||
|
//go:noescape
|
||
|
func domsanread(addr unsafe.Pointer, sz uintptr)
|
||
|
|
||
|
//go:noescape
|
||
|
func msanwrite(addr unsafe.Pointer, sz uintptr)
|
||
|
|
||
|
//go:noescape
|
||
|
func msanmalloc(addr unsafe.Pointer, sz uintptr)
|
||
|
|
||
|
//go:noescape
|
||
|
func msanfree(addr unsafe.Pointer, sz uintptr)
|
||
|
|
||
|
// These are called from msan_amd64.s
|
||
|
//go:cgo_import_static __msan_read_go
|
||
|
//go:cgo_import_static __msan_write_go
|
||
|
//go:cgo_import_static __msan_malloc_go
|
||
|
//go:cgo_import_static __msan_free_go
|