// byteOrder is a subset of encoding/binary.ByteOrder.
type byteOrder interface {
	Uint32([]byte) uint32
	Uint64([]byte) uint64
}

type littleEndian struct{}
type bigEndian struct{}

func (littleEndian) Uint32(b []byte) uint32 {
	_ = b[3] // bounds check hint to compiler; see golang.org/issue/14808
	return uint32(b[0]) | uint32(b[1])<<8 | uint32(b[2])<<16 | uint32(b[3])<<24
}

func (littleEndian) Uint64(b []byte) uint64 {

func read(fd int32, p unsafe.Pointer, n int32) int32

func closefd(fd int32) int32

func exit(code int32)
func usleep(usec uint32)

//go:nosplit
func usleep_no_g(usec uint32) {
	usleep(usec)
}

// write1 calls the write system call.
// It returns a non-negative number of bytes written or a negative errno value.
//
//go:noescape
func write1(fd uintptr, p unsafe.Pointer, n int32) int32

//go:noescape

	allocationBase    uintptr
	allocationProtect uint32
	regionSize        uintptr
	state             uint32
	protect           uint32
	type_             uint32
}

// https://learn.microsoft.com/en-us/windows-hardware/drivers/ddi/wdm/ns-wdm-_osversioninfow
type _OSVERSIONINFOW struct {
	osVersionInfoSize uint32
	majorVersion      uint32
	minorVersion      uint32
	buildNumber       uint32
	platformId        uint32

// HashStr returns the hash and the appropriate multiplicative
// factor for use in Rabin-Karp algorithm.
func HashStr[T string | []byte](sep T) (uint32, uint32) {
	hash := uint32(0)
	for i := 0; i < len(sep); i++ {
		hash = hash*PrimeRK + uint32(sep[i])
	}
	var pow, sq uint32 = 1, PrimeRK
	for i := len(sep); i > 0; i >>= 1 {
		if i&1 != 0 {
			pow *= sq
		}
		sq *= sq
	}
	return hash, pow
}

	vdsoSymStringsSize = vdsoArrayMax     // byte
	vdsoVerSymSize     = vdsoArrayMax / 2 // uint16
	vdsoHashSize       = vdsoArrayMax / 4 // uint32

	// vdsoBloomSizeScale is a scaling factor for gnuhash tables which are uint32 indexed,
	// but contain uintptrs
	vdsoBloomSizeScale = unsafe.Sizeof(uintptr(0)) / 4 // uint32
)

/* How to extract and insert information held in the st_info field.  */
func _ELF_ST_BIND(val byte) byte { return val >> 4 }

	SC	R3, (R1)
	BEQ	R3, -4(PC)
	SYNC
	RET

// func Or32(addr *uint32, v uint32) old uint32
TEXT ·Or32(SB), NOSPLIT, $0-12
	MOVW	ptr+0(FP), R1
	MOVW	val+4(FP), R2

	SYNC
	LL	(R1), R3
	OR	R2, R3, R4
	SC	R4, (R1)
	BEQ	R4, -4(PC)
	SYNC
	MOVW	R3, ret+8(FP)
	RET

// func And32(addr *uint32, v uint32) old uint32
TEXT ·And32(SB), NOSPLIT, $0-12
	MOVW	ptr+0(FP), R1
	MOVW	val+4(FP), R2

	msghdr.Controllen = uint32(length)
}

func (msghdr *Msghdr) SetIovlen(length int) {
	msghdr.Iovlen = int32(length)
}

func (cmsg *Cmsghdr) SetLen(length int) {
	cmsg.Len = uint32(length)
}

func (d *PtraceIoDesc) SetLen(length int) {
	d.Len = uint32(length)
}

func sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
	var writtenOut uint64 = 0

//go:build unix || (js && wasm) || wasip1 || windows

package signal

import (
	"os"
	"syscall"
)

// Defined by the runtime package.
func signal_disable(uint32)
func signal_enable(uint32)
func signal_ignore(uint32)
func signal_ignored(uint32) bool
func signal_recv() uint32

func loop() {
	for {
		process(syscall.Signal(signal_recv()))
	}
}

func init() {
	watchSignalLoop = loop
}

const (

)

const (
	_ uint32 = 0 /* ERROR "overflows" */ - 1
	_ uint32 = 0
	_ uint32 = maxUint32
	_ uint32 = maxUint32 /* ERROR "overflows" */ + 1
	_ uint32 = smallestFloat64 /* ERROR "truncated" */

	_ = uint32(0 /* ERROR "overflows" */ - 1)
	_ = uint32(0)
	_ = uint32(maxUint32)
	_ = uint32(maxUint32 /* ERROR "overflows" */ + 1)
	_ = uint32(smallestFloat64 /* ERROR "cannot convert" */)
)

		b ^= t
	}
	a, b = mix32(a, b)
	a, b = mix32(a, b)
	return uintptr(a ^ b)
}

func mix32(a, b uint32) (uint32, uint32) {
	c := uint64(a^uint32(hashkey[1])) * uint64(b^uint32(hashkey[2]))
	return uint32(c), uint32(c >> 32)