fd, _, err := Syscall(SYS_SOCKETCALL, netAccept4, uintptr(unsafe.Pointer(&args)), 0)
	if err != 0 {
		return 0, err
	}
	return int(fd), nil
}

func getsockname(s int, rsa *RawSockaddrAny, addrlen *_Socklen) error {
	args := [3]uintptr{uintptr(s), uintptr(unsafe.Pointer(rsa)), uintptr(unsafe.Pointer(addrlen))}
	_, _, err := RawSyscall(SYS_SOCKETCALL, netGetSockName, uintptr(unsafe.Pointer(&args)), 0)

}

func socketcall(call int, a0, a1, a2, a3, a4, a5 uintptr) (int, syscall.Errno) {
	fd, _, err := Syscall(SYS_SOCKETCALL, uintptr(call), uintptr(unsafe.Pointer(&a0)), 0)
	return int(fd), err
}

func rawsocketcall(call int, a0, a1, a2, a3, a4, a5 uintptr) (int, syscall.Errno) {
	fd, _, err := RawSyscall(SYS_SOCKETCALL, uintptr(call), uintptr(unsafe.Pointer(&a0)), 0)
	return int(fd), err

	INVOKE_SYSCALL
	MOVL	AX, r1+16(FP)
	MOVL	DX, r2+20(FP)
	RET

#define SYS_SOCKETCALL 102	/* from zsysnum_linux_386.go */

// func socketcall(call int, a0, a1, a2, a3, a4, a5 uintptr) (n int, err int)
// Kernel interface gets call sub-number and pointer to a0.
TEXT ·socketcall(SB),NOSPLIT,$0-36
	CALL	runtime·entersyscall(SB)
	MOVL	$SYS_SOCKETCALL, AX	// syscall entry
	MOVL	call+0(FP), BX	// socket call number

	SYSCALL
	MOVD	R2, r1+32(FP)
	MOVD	R3, r2+40(FP)
	RET

#define SYS_SOCKETCALL 102	/* from zsysnum_linux_s390x.go */

// func socketcall(call int, a0, a1, a2, a3, a4, a5 uintptr) (n int, err int)
// Kernel interface gets call sub-number and pointer to a0.
TEXT ·socketcall(SB),NOSPLIT,$0-72
	BL	runtime·entersyscall(SB)
	MOVD	$SYS_SOCKETCALL, R1	// syscall entry
	MOVD	call+0(FP), R2		// socket call number

	SYS_FTRUNCATE              = 93
	SYS_FCHMOD                 = 94
	SYS_GETPRIORITY            = 96
	SYS_SETPRIORITY            = 97
	SYS_STATFS                 = 99
	SYS_FSTATFS                = 100
	SYS_SOCKETCALL             = 102
	SYS_SYSLOG                 = 103
	SYS_SETITIMER              = 104
	SYS_GETITIMER              = 105
	SYS_STAT                   = 106
	SYS_LSTAT                  = 107

	SYS_GETPRIORITY            = 4096
	SYS_SETPRIORITY            = 4097
	SYS_PROFIL                 = 4098
	SYS_STATFS                 = 4099
	SYS_FSTATFS                = 4100
	SYS_IOPERM                 = 4101
	SYS_SOCKETCALL             = 4102
	SYS_SYSLOG                 = 4103
	SYS_SETITIMER              = 4104
	SYS_GETITIMER              = 4105
	SYS_STAT                   = 4106
	SYS_LSTAT                  = 4107

	SYS_FCHMOD                 = 94
	SYS_FCHOWN                 = 95
	SYS_GETPRIORITY            = 96
	SYS_SETPRIORITY            = 97
	SYS_STATFS                 = 99
	SYS_FSTATFS                = 100
	SYS_SOCKETCALL             = 102
	SYS_SYSLOG                 = 103
	SYS_SETITIMER              = 104
	SYS_GETITIMER              = 105
	SYS_STAT                   = 106
	SYS_LSTAT                  = 107

	SYS_GETPRIORITY            = 96
	SYS_SETPRIORITY            = 97
	SYS_PROFIL                 = 98
	SYS_STATFS                 = 99
	SYS_FSTATFS                = 100
	SYS_IOPERM                 = 101
	SYS_SOCKETCALL             = 102
	SYS_SYSLOG                 = 103
	SYS_SETITIMER              = 104
	SYS_GETITIMER              = 105
	SYS_STAT                   = 106
	SYS_LSTAT                  = 107

	SYS_GETPRIORITY            = 4096
	SYS_SETPRIORITY            = 4097
	SYS_PROFIL                 = 4098
	SYS_STATFS                 = 4099
	SYS_FSTATFS                = 4100
	SYS_IOPERM                 = 4101
	SYS_SOCKETCALL             = 4102
	SYS_SYSLOG                 = 4103
	SYS_SETITIMER              = 4104
	SYS_GETITIMER              = 4105
	SYS_STAT                   = 4106
	SYS_LSTAT                  = 4107

	MOVL	$SYS_socketcall, AX
	MOVL	$3, BX  // connect
	LEAL	fd+0(FP), CX
	INVOKE_SYSCALL
	MOVL	AX, ret+12(FP)
	RET

// int socket(int domain, int type, int protocol)
TEXT runtime·socket(SB),NOSPLIT,$0-16
	// socket is implemented as socketcall(NR_socket, 1, *(rest of args))
	// stack already should have domain, type, protocol.
	MOVL	$SYS_socketcall, AX
	MOVL	$1, BX  // socket