go asan 源码
golang asan 代码
文件路径：/src/runtime/asan.go
// Copyright 2021 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 asan
package runtime
import (
"unsafe"
)
// Public address sanitizer API.
func ASanRead(addr unsafe.Pointer, len int) {
sp := getcallersp()
pc := getcallerpc()
doasanread(addr, uintptr(len), sp, pc)
}
func ASanWrite(addr unsafe.Pointer, len int) {
sp := getcallersp()
pc := getcallerpc()
doasanwrite(addr, uintptr(len), sp, pc)
}
// Private interface for the runtime.
const asanenabled = true
// asan{read,write} are nosplit because they may be called between
// fork and exec, when the stack must not grow. See issue #50391.
//go:nosplit
func asanread(addr unsafe.Pointer, sz uintptr) {
sp := getcallersp()
pc := getcallerpc()
doasanread(addr, sz, sp, pc)
}
//go:nosplit
func asanwrite(addr unsafe.Pointer, sz uintptr) {
sp := getcallersp()
pc := getcallerpc()
doasanwrite(addr, sz, sp, pc)
}
//go:noescape
func doasanread(addr unsafe.Pointer, sz, sp, pc uintptr)
//go:noescape
func doasanwrite(addr unsafe.Pointer, sz, sp, pc uintptr)
//go:noescape
func asanunpoison(addr unsafe.Pointer, sz uintptr)
//go:noescape
func asanpoison(addr unsafe.Pointer, sz uintptr)
//go:noescape
func asanregisterglobals(addr unsafe.Pointer, n uintptr)
// These are called from asan_GOARCH.s
//
//go:cgo_import_static __asan_read_go
//go:cgo_import_static __asan_write_go
//go:cgo_import_static __asan_unpoison_go
//go:cgo_import_static __asan_poison_go
//go:cgo_import_static __asan_register_globals_go
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