mirror of https://go.googlesource.com/go
70 lines
1.6 KiB
Go
70 lines
1.6 KiB
Go
// Copyright 2021 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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//go:build asan
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package runtime
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import (
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"unsafe"
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)
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// Public address sanitizer API.
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func ASanRead(addr unsafe.Pointer, len int) {
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sp := getcallersp()
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pc := getcallerpc()
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doasanread(addr, uintptr(len), sp, pc)
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}
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func ASanWrite(addr unsafe.Pointer, len int) {
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sp := getcallersp()
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pc := getcallerpc()
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doasanwrite(addr, uintptr(len), sp, pc)
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}
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// Private interface for the runtime.
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const asanenabled = true
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// asan{read,write} are nosplit because they may be called between
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// fork and exec, when the stack must not grow. See issue #50391.
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//go:linkname asanread
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//go:nosplit
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func asanread(addr unsafe.Pointer, sz uintptr) {
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sp := getcallersp()
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pc := getcallerpc()
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doasanread(addr, sz, sp, pc)
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}
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//go:linkname asanwrite
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//go:nosplit
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func asanwrite(addr unsafe.Pointer, sz uintptr) {
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sp := getcallersp()
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pc := getcallerpc()
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doasanwrite(addr, sz, sp, pc)
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}
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//go:noescape
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func doasanread(addr unsafe.Pointer, sz, sp, pc uintptr)
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//go:noescape
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func doasanwrite(addr unsafe.Pointer, sz, sp, pc uintptr)
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//go:noescape
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func asanunpoison(addr unsafe.Pointer, sz uintptr)
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//go:noescape
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func asanpoison(addr unsafe.Pointer, sz uintptr)
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//go:noescape
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func asanregisterglobals(addr unsafe.Pointer, n uintptr)
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// These are called from asan_GOARCH.s
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//
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//go:cgo_import_static __asan_read_go
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//go:cgo_import_static __asan_write_go
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//go:cgo_import_static __asan_unpoison_go
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//go:cgo_import_static __asan_poison_go
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//go:cgo_import_static __asan_register_globals_go
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