go/src/crypto/internal/fips140/check/checktest/test.go

// Copyright 2024 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.

// Package checktest defines some code and data for use in
// the crypto/internal/fips140/check test.
package checktest

import (
	_ "crypto/internal/fips140/check"
	"runtime"
	_ "unsafe" // go:linkname
)

var NOPTRDATA int = 1

// The linkname here disables asan registration of this global,
// because asan gets mad about rodata globals.
//
//go:linkname RODATA crypto/internal/fips140/check/checktest.RODATA
var RODATA int32 // set to 2 in asm.s

// DATA needs to have both a pointer and an int so that _some_ of it gets
// initialized at link time, so it is treated as DATA and not BSS.
// The pointer is deferred to init time.
var DATA = struct {
	P *int
	X int
}{&NOPTRDATA, 3}

var NOPTRBSS int

var BSS *int

func TEXT() {}

var (
	globl12 [12]byte
	globl8  [8]byte
)

func init() {
	globl8 = [8]byte{1, 2, 3, 4, 5, 6, 7, 8}
	globl12 = [12]byte{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12}
	runtime.Gosched()

	sum := byte(0)
	for _, x := range globl12 {
		sum += x
	}
	if sum != 78 {
		panic("globl12 did not sum properly")
	}

	sum = byte(0)
	for _, x := range globl8 {
		sum += x
	}
	if sum != 36 {
		panic("globl8 did not sum properly")
	}
}