// Notes:
	// - for linux/amd64 and linux/arm64, for relro we'll always see a
	//   .got section when building with -buildmode=pie (in addition
	//   to .dynamic); for some other less mainstream archs (ppc64le,
	//   s390) this is not the case (on ppc64le for example we only
	//   see got refs from C objects). Hence we put ".dynamic" in the
	//   'want RO' list below and ".got" in the 'want RO if present".

	locked = true
	if clone3 != nil {
		pid, err1 = rawVforkSyscall(_SYS_clone3, uintptr(unsafe.Pointer(clone3)), unsafe.Sizeof(*clone3), 0)
	} else {
		flags |= uintptr(SIGCHLD)
		if runtime.GOARCH == "s390x" {
			// On Linux/s390, the first two arguments of clone(2) are swapped.
			pid, err1 = rawVforkSyscall(SYS_CLONE, 0, flags, uintptr(unsafe.Pointer(&pidfd)))
		} else {

	// arm64:"LSL",-"AND"
	// ppc64x:"RLDICL",-"ORN",-"ISEL"
	// riscv64:"SLL",-"AND\t",-"SLTIU"
	// s390x:-"RISBGZ",-"AND",-"LOCGR"
	return v << (s & 63)
}

func rshMask64Ux64(v uint64, s uint64) uint64 {
	// arm64:"LSR",-"AND",-"CSEL"
	// ppc64x:"RLDICL",-"ORN",-"ISEL"
	// riscv64:"SRL\t",-"AND\t",-"SLTIU"
	// s390x:-"RISBGZ",-"AND",-"LOCGR"
	return v >> (s & 63)
}

func rshMask64x64(v int64, s uint64) int64 {

	// amd64:`MOVQ\s\(.*\),`,-`MOV[BWL]\t[^$]`,-`OR`
	// s390x:`MOVDBR\s\(.*\),`
	// arm64:`MOVD\s\(R[0-9]+\),`,-`MOV[BHW]`
	// ppc64le:`MOVD\s`,-`MOV[BHW]Z`
	// ppc64:`MOVDBR\s`,-`MOV[BHW]Z`
	return binary.LittleEndian.Uint64(b)
}

func load_le64_idx(b []byte, idx int) uint64 {
	// amd64:`MOVQ\s\(.*\)\(.*\*1\),`,-`MOV[BWL]\t[^$]`,-`OR`
	// s390x:`MOVDBR\s\(.*\)\(.*\*1\),`
	// arm64:`MOVD\s\(R[0-9]+\)\(R[0-9]+\),`,-`MOV[BHW]`

		PPC64 | uint32(elf.R_PPC_REL32)<<16,
		S390X | uint32(elf.R_390_32)<<16,
		S390X | uint32(elf.R_390_PC32)<<16,
		S390X | uint32(elf.R_390_GOT32)<<16,
		S390X | uint32(elf.R_390_PLT32)<<16,
		S390X | uint32(elf.R_390_PC32DBL)<<16,
		S390X | uint32(elf.R_390_PLT32DBL)<<16,
		S390X | uint32(elf.R_390_GOTPCDBL)<<16,
		S390X | uint32(elf.R_390_GOTENT)<<16:
		return 4, 4, nil

// go run linux/mksysnum.go -Wall -Werror -static -I/tmp/s390x/include -fsigned-char /tmp/s390x/include/asm/unistd.h
// Code generated by the command above; see README.md. DO NOT EDIT.

//go:build s390x && linux

package unix

const (
	SYS_EXIT                    = 1
	SYS_FORK                    = 2
	SYS_READ                    = 3
	SYS_WRITE                   = 4
	SYS_OPEN                    = 5
	SYS_CLOSE                   = 6

	// arm64:`MOVHU\t\(.*\), [R]`,`MOVD\t[$]`,`CMPW\tR`
	// ppc64le:`MOVHZ\t\(.*\), [R]`,`CMPW\t.*, [$]`
	// s390x:`MOVHBR\t\(.*\), [R]`,`CMPW\t.*, [$]`
	return s == "xx"
}

func CompareString2(s string) bool {
	// amd64:`CMPL\t\(.*\), [$]`
	// arm64:`MOVWU\t\(.*\), [R]`,`CMPW\t.*, [R]`
	// ppc64le:`MOVWZ\t\(.*\), [R]`,`CMPW\t.*, [R]`
	// s390x:`MOVWBR\t\(.*\), [R]`,`CMPW\t.*, [$]`
	return s == "xxxx"
}

func CompareString3(s string) bool {

	// Keep in sync with crypto/aes/cipher_s390x.go.
	hasGCMAsmS390X = cpu.S390X.HasAES && cpu.S390X.HasAESCBC && cpu.S390X.HasAESCTR &&
		(cpu.S390X.HasGHASH || cpu.S390X.HasAESGCM)

	hasAESGCMHardwareSupport = runtime.GOARCH == "amd64" && hasGCMAsmAMD64 ||
		runtime.GOARCH == "arm64" && hasGCMAsmARM64 ||
		runtime.GOARCH == "s390x" && hasGCMAsmS390X
)

var aesgcmCiphers = map[uint16]bool{
	// TLS 1.2

	_        CacheLinePad
}

// S390X contains the supported CPU features of the current IBM Z
// (s390x) platform. If the current platform is not IBM Z then all
// feature flags are false.
//
// S390X is padded to avoid false sharing. Further HasVX is only set
// if the OS supports vector registers in addition to the STFLE
// feature bit being set.
var S390X struct {
	_         CacheLinePad

// cgo -godefs -objdir=/tmp/s390x/cgo -- -Wall -Werror -static -I/tmp/s390x/include -fsigned-char linux/types.go | go run mkpost.go
// Code generated by the command above; see README.md. DO NOT EDIT.

//go:build s390x && linux

package unix

const (
	SizeofPtr  = 0x8
	SizeofLong = 0x8
)

type (
	_C_long int64
)

type Timespec struct {
	Sec  int64
	Nsec int64
}

type Timeval struct {
	Sec  int64
	Usec int64