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// Copyright 2023 The Libc 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 libc // import "modernc.org/libc"
import (
"math/bits"
"sync/atomic"
"unsafe"
)
type long = int32
type ulong = uint32
var (
___a_barrier_ptr ulong
)
// RawMem represents the biggest byte array the runtime can handle
type RawMem [1<<31 - 1]byte
// void *memcpy(void *dest, const void *src, size_t n);
func Xmemcpy(t *TLS, dest, src uintptr, n Tsize_t) (r uintptr) {
if __ccgo_strace {
trc("t=%v src=%v n=%v, (%v:)", t, src, n, origin(2))
defer func() { trc("-> %v", r) }()
}
return _memcpy(t, dest, src, n)
}
func _memcpy(t *TLS, dest, src uintptr, n Tsize_t) (r uintptr) {
if n != 0 {
copy((*RawMem)(unsafe.Pointer(dest))[:n:n], (*RawMem)(unsafe.Pointer(src))[:n:n])
}
return dest
}
func _fetestexcept(t *TLS, _ int32) int32 {
return 0
}
func _feclearexcept(t *TLS, _ int32) int32 {
return 0
}
func _a_crash(tls *TLS) {
panic("crash")
}
var atomicBarrier atomic.Int32
func _a_barrier(tls *TLS) {
atomicBarrier.Add(1)
}
// static inline int a_sc(volatile int *p, int v)
func _a_sc(*TLS, uintptr, int32) int32 {
panic(todo(""))
}
// static inline int a_ll(volatile int *p)
func _a_ll(tls *TLS, p uintptr) int32 {
return atomic.LoadInt32((*int32)(unsafe.Pointer(p)))
}
func _a_clz_32(tls *TLS, x uint32) int32 {
return int32(bits.LeadingZeros32(x))
}
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