stubs.go

     1  // Copyright 2025 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  //go:build goexperiment.runtimesecret && (arm64 || amd64)
     6  
     7  // testing stubs, these are implemented in assembly in
     8  // asm_$GOARCH.s
     9  //
    10  // Note that this file is also used as a template to build a
    11  // crashing binary that tries to leave secrets in places where
    12  // they are supposed to be erased. see crash_test.go for more info
    13  
    14  package secret
    15  
    16  import "unsafe"
    17  
    18  // Load data from p into test registers.
    19  //
    20  //go:noescape
    21  func loadRegisters(p unsafe.Pointer)
    22  
    23  // Spill data from test registers into p.
    24  // Returns the amount of space filled in.
    25  //
    26  //go:noescape
    27  func spillRegisters(p unsafe.Pointer) uintptr
    28  
    29  // Load secret into all registers.
    30  //
    31  //go:noescape
    32  func useSecret(secret []byte)
    33  
    34  // callback from assembly
    35  func delay() {
    36  	sleep(1_000_000)
    37  }
    38  
    39  // linknamed to avoid package importing time
    40  // for just testing code
    41  //
    42  //go:linkname sleep time.Sleep
    43  func sleep(int64)
    44
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