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/**************************************************************************
* arch/sim/src/up_setjmp64.S
*
* Copyright (C) 2014 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* 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.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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
* COPYRIGHT OWNER 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.
*
**************************************************************************/
/**************************************************************************
* Included Files
**************************************************************************/
#include "up_internal.h"
/**************************************************************************
* Pre-processor Definitions
**************************************************************************/
#ifdef __CYGWIN__
//# define SYMBOL(s) _##s
# define SYMBOL(s) s
#else
# define SYMBOL(s) s
#endif
/**************************************************************************
* Private Types
**************************************************************************/
/**************************************************************************
* Private Function Prototypes
**************************************************************************/
/**************************************************************************
* Public Variables
**************************************************************************/
/**************************************************************************
* Private Variables
**************************************************************************/
/**************************************************************************
* Private Functions
**************************************************************************/
/**************************************************************************
* Public Functions
**************************************************************************/
.text
.align 4
.globl SYMBOL(up_setjmp)
#ifndef __CYGWIN__
.type SYMBOL(up_setjmp), @function
#endif
SYMBOL(up_setjmp):
/* Get the return address, adjusting the stack pointer */
pop %rsi
/* Set up the return value */
xorl %eax,%eax
/* Save 1: rbx */
movq %rbx, JB_RBX(%rdi)
/* Save 2: Value of the rsp *after* returning */
movq %rsp, JB_RSP(%rdi)
/* Fix up the return stack */
push %rsi
/* Save registers */
/* Storage order: %rbx, %rsp, %rbp, %r12, %r13, %r14, %r15, %rip */
movq %rbp, JB_RBP(%rdi) /* Save 3: rbp */
movq %r12, JB_R12(%rdi) /* Save 4: r12 */
movq %r13, JB_R13(%rdi) /* Save 5: r13 */
movq %r14, JB_R14(%rdi) /* Save 6: r14 */
movq %r15, JB_R15(%rdi) /* Save 7: r15 */
movq %rsi, JB_RSI(%rdi) /* Save 8: Return address */
ret
#ifndef __CYGWIN__
.size SYMBOL(up_setjmp), . - SYMBOL(up_setjmp)
#endif
.align 4
.globl SYMBOL(up_longjmp)
#ifndef __CYGWIN__
.type SYMBOL(up_longjmp), @function
#endif
SYMBOL(up_longjmp):
/* Setup return value */
movl %esi,%eax
/* Restore registers */
movq JB_RBX(%rdi),%rbx /* Save 1: rbx */
movq JB_RSP(%rdi),%rsp /* Save 2: rsp */
movq JB_RBP(%rdi),%rbp /* Save 3: rdi */
movq JB_R12(%rdi),%r12 /* Save 4: r12 */
movq JB_R13(%rdi),%r13 /* Save 5: r13 */
movq JB_R14(%rdi),%r14 /* Save 6: r14 */
movq JB_R15(%rdi),%r15 /* Save 7: rbp */
/* And return */
jmp *JB_RSI(%rdi) /* Save 8: rsi */
#ifndef __CYGWIN__
.size SYMBOL(up_longjmp), . - SYMBOL(up_longjmp)
#endif
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