scc

 1#!/bin/sh
 2
 3#
 4# This job is very easy because app and kernel ABI are identical
 5# until the 4th parameter, so we only have to set the syscall
 6# number in rax
 7
 8awk 'BEGIN  {n = 33554432}
 9            {gsub(/ *#./, "")}
10     /'$1'/ {printf("0x%x\t%s\t%s\n",  n + $1, $2, $3)}' syscall.lst |
11while read num name nargs
12do
13cat <<EOF > $name.s
14	.file	"$name.s"
15
16	.globl	$name
17$name:
18	`case $nargs in 4|5|6)
19		echo "movq       %rcx,%r10"
20                ;;
21        esac`
22	movq	\$$num,%rax
23	syscall
24	jb	1f
25	retq
26
271:	movq	%rax,_errno(%rip)
28	movq	\$-1,%rax
29	retq
30EOF
31done