/* Copyright (C) 2001-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or

   modify it under the terms of the GNU Lesser General Public

   License as published by the Free Software Foundation; either

   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public

   License along with the GNU C Library; if not, see

   <http://www.gnu.org/licenses/>.  */

#include <sysdep.h>

/* Please consult the file sysdeps/unix/sysv/linux/x86-64/sysdep.h for

   more information about the value -4095 used below.  */

/* Usage: long syscall (syscall_number, arg1, arg2, arg3, arg4, arg5, arg6)

   We need to do some arg shifting, the syscall_number will be in

   rax.  */

	.text

ENTRY (syscall)

	movq %rdi, %rax		/* Syscall number -> rax.  */

	movq %rsi, %rdi		/* shift arg1 - arg5.  */

	movq %rdx, %rsi

	movq %rcx, %rdx

	movq %r8, %r10

	movq %r9, %r8

	movq 8(%rsp),%r9	/* arg6 is on the stack.  */

	syscall			/* Do the system call.  */

	cmpq $-4095, %rax	/* Check %rax for error.  */

	jae SYSCALL_ERROR_LABEL	/* Jump to error handler if error.  */

	ret			/* Return to caller.  */

PSEUDO_END (syscall)