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+/* Copyright (C) 2001, 2003 Free Software Foundation, Inc.
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+ This file is part of the GNU C Library.
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+
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+ The GNU C Library is free software; you can redistribute it and/or
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+ modify it under the terms of the GNU Lesser General Public
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+ License as published by the Free Software Foundation; either
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+ version 2.1 of the License, or (at your option) any later version.
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+
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+ The GNU C Library is distributed in the hope that it will be useful,
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+ but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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+ Lesser General Public License for more details.
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+
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+ You should have received a copy of the GNU Lesser General Public
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+ License along with the GNU C Library; if not, write to the Free
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+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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+ 02111-1307 USA. */
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+
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+#include <sysdep.h>
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+
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+/* Please consult the file sysdeps/unix/sysv/linux/x86-64/sysdep.h for
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+ more information about the value -4095 used below. */
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+
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+/* Usage: long syscall (syscall_number, arg1, arg2, arg3, arg4, arg5, arg6)
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+ We need to do some arg shifting, the syscall_number will be in
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+ rax. */
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+
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+
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+.globl syscall;
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+.type syscall,@function;
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+.align 16;
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+syscall:
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+ movq %rdi, %rax /* Syscall number -> rax. */
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+ movq %rsi, %rdi /* shift arg1 - arg5. */
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+ movq %rdx, %rsi
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+ movq %rcx, %rdx
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+ movq %r8, %r10
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+ movq %r9, %r8
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+ movq 8(%rsp),%r9 /* arg6 is on the stack. */
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+ syscall /* Do the system call. */
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+ cmpq $-4095, %rax /* Check %rax for error. */
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+ jae __syscall_error /* Branch forward if it failed. */
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+ ret /* Return to caller. */
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+
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+__syscall_error:
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+ /* TODO: implement this ! :D */
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+
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+.size syscall,.-syscall;
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Mike Frysinger