mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-20 11:11:24 +00:00
e46fe241d3
calls are just gradually getting more and more stale. At this point it would be better to start from scratch once prof_machdep.c is adapted.
68 lines
2.4 KiB
ArmAsm
68 lines
2.4 KiB
ArmAsm
/*-
|
|
* Copyright (c) 2003 Peter Wemm
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#include <machine/asmacros.h>
|
|
|
|
#include "assym.s"
|
|
|
|
#define IDTVEC(name) ALIGN_TEXT; .globl __CONCAT(X,name); \
|
|
.type __CONCAT(X,name),@function; __CONCAT(X,name):
|
|
|
|
.text
|
|
/*
|
|
* Call gate entry for FreeBSD ELF and Linux/NetBSD syscall (int 0x80)
|
|
*
|
|
* This is a SDT_SYSIDT entry point (unlike the i386 port) so that we
|
|
* can do a swapgs before enabling interrupts. This is critical because
|
|
* if we took an interrupt before swapgs, the interrupt code would see
|
|
* that it originated in supervisor mode and skip the swapgs.
|
|
*/
|
|
SUPERALIGN_TEXT
|
|
IDTVEC(int0x80_syscall)
|
|
swapgs
|
|
sti
|
|
pushq $2 /* sizeof "int 0x80" */
|
|
subq $TF_ERR,%rsp /* skip over tf_trapno */
|
|
movq %rdi,TF_RDI(%rsp)
|
|
movq %rsi,TF_RSI(%rsp)
|
|
movq %rdx,TF_RDX(%rsp)
|
|
movq %rcx,TF_RCX(%rsp)
|
|
movq %r8,TF_R8(%rsp)
|
|
movq %r9,TF_R9(%rsp)
|
|
movq %rax,TF_RAX(%rsp)
|
|
movq %rbx,TF_RBX(%rsp)
|
|
movq %rbp,TF_RBP(%rsp)
|
|
movq %r10,TF_R10(%rsp)
|
|
movq %r11,TF_R11(%rsp)
|
|
movq %r12,TF_R12(%rsp)
|
|
movq %r13,TF_R13(%rsp)
|
|
movq %r14,TF_R14(%rsp)
|
|
movq %r15,TF_R15(%rsp)
|
|
call ia32_syscall
|
|
jmp doreti
|