// license that can be found in the LICENSE file.

package unix

import (
	"syscall"
	"unsafe"
)

// getentropy(2)'s syscall number, from /usr/src/sys/kern/syscalls.master
const entropyTrap uintptr = 7

// GetEntropy calls the OpenBSD getentropy system call.
func GetEntropy(p []byte) error {
	_, _, errno := syscall.Syscall(entropyTrap,
		uintptr(unsafe.Pointer(&p[0])),
		uintptr(len(p)),
		0)
	if errno != 0 {

them into syscalls. This requires the name of the prototype in the comment to
match a syscall number in the `zsysnum_${GOOS}_${GOARCH}.go` file. The function
prototype can be exported (capitalized) or not.

Adding a new syscall often just requires adding a new `//sys` function prototype
with the desired arguments and a capitalized name so it is exported. However, if

	c := make(chan os.Signal, 1)
	signal.Notify(c, syscall.SIGUSR1)
	defer signal.Stop(c)
	syscall.Kill(syscall.Getpid(), syscall.SIGUSR1)
	<-c

func stackGuardMultiplier(race bool) int {
	// This arithmetic must match that in runtime/internal/sys/consts.go:StackGuardMultiplier.
	n := 1
	// On AIX, a larger stack is needed for syscalls.
	if buildcfg.GOOS == "aix" {
		n += 1
	}
	// The race build also needs more stack.
	if race {
		n += 1
	}
	return n

#
# Generate system call table for OpenBSD from master list
# (for example, /usr/src/sys/kern/syscalls.master).

use strict;

my $command = "mksysnum_openbsd.pl " . join(' ', @ARGV);

print <<EOF;
// $command
// Code generated by the command above; DO NOT EDIT.

package syscall

const (
EOF

while(<>){
	if(/^([0-9]+)\s+STD\s+(NOLOCK\s+)?(\{ \S+\s+\*?(\w+).*)$/){
		my $num = $1;

#
# Generate system call table for OpenBSD from master list
# (for example, /usr/src/sys/kern/syscalls.master).

use strict;

my $command = "mksysnum_netbsd.pl " . join(' ', @ARGV);

print <<EOF;
// $command
// Code generated by the command above; DO NOT EDIT.

package syscall

const (
EOF

my $line = '';
while(<>){
	if($line =~ /^(.*)\\$/) {
		# Handle continuation

Carlos Amedee <******@****.***> 1715265901 -0400

#
# Generate system call table for FreeBSD from master list
# (for example, /usr/src/sys/kern/syscalls.master).

use strict;

my $command = "mksysnum_freebsd.pl " . join(' ', @ARGV);

print <<EOF;
// $command
// Code generated by the command above; DO NOT EDIT.

package syscall

const (
EOF

while(<>){
	if(/^([0-9]+)\s+\S+\s+STD\s+({ \S+\s+(\w+).*)$/){
		my $num = $1;

#
# Generate system call table for DragonFly from master list
# (for example, /usr/src/sys/kern/syscalls.master).

use strict;

my $command = "mksysnum_dragonfly.pl " . join(' ', @ARGV);

print <<EOF;
// $command
// Code generated by the command above; DO NOT EDIT.

package syscall

const (
EOF

while(<>){
	if(/^([0-9]+)\s+STD\s+({ \S+\s+(\w+).*)$/){
		my $num = $1;
		my $proto = $2;

// license that can be found in the LICENSE file.

#include "textflag.h"

// System call support for plan9 on arm

// Just jump to package syscall's implementation for all these functions.
// The runtime may know about them.

TEXT ·Syscall(SB),NOSPLIT,$0-32
	JMP	syscall·Syscall(SB)

TEXT ·Syscall6(SB),NOSPLIT,$0-44
	JMP	syscall·Syscall6(SB)

TEXT ·RawSyscall(SB),NOSPLIT,$0-28
	JMP	syscall·RawSyscall(SB)