diff options
Diffstat (limited to 'nuttx/arch/arm/src/arm/up_saveusercontext.S')
| -rw-r--r-- | nuttx/arch/arm/src/arm/up_saveusercontext.S | 119 |
1 files changed, 0 insertions, 119 deletions
diff --git a/nuttx/arch/arm/src/arm/up_saveusercontext.S b/nuttx/arch/arm/src/arm/up_saveusercontext.S deleted file mode 100644 index 8d154d187..000000000 --- a/nuttx/arch/arm/src/arm/up_saveusercontext.S +++ /dev/null @@ -1,119 +0,0 @@ -/************************************************************************** - * arch/arm/src/arm/up_saveusercontext.S - * - * Copyright (C) 2007, 2009 Gregory Nutt. All rights reserved. - * Author: Gregory Nutt <spudmonkey@racsa.co.cr> - * - * 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 <nuttx/irq.h> -#include "up_internal.h" - -/************************************************************************** - * Private Definitions - **************************************************************************/ - -/************************************************************************** - * Private Types - **************************************************************************/ - -/************************************************************************** - * Private Function Prototypes - **************************************************************************/ - -/************************************************************************** - * Global Variables - **************************************************************************/ - -/************************************************************************** - * Private Variables - **************************************************************************/ - -/************************************************************************** - * Private Functions - **************************************************************************/ - -/************************************************************************** - * Public Functions - **************************************************************************/ - -/************************************************************************** - * Name: up_saveusercontext - **************************************************************************/ - - .text - .globl up_saveusercontext - .type up_saveusercontext, function -up_saveusercontext: - /* On entry, a1 (r0) holds address of struct xcptcontext. - * Offset to the user region. - */ - - /* Make sure that the return value will be non-zero (the - * value of the other volatile registers don't matter -- - * r1-r3, ip). This function is called throught the - * noraml C calling conventions and the values of these - * registers cannot be assumed at the point of setjmp - * return. - */ - - mov ip, #1 - str ip, [r0, #(4*REG_R0)] - - /* Save the volatile registers (plus r12 which really - * doesn't need to be saved) - */ - - add r1, r0, #(4*REG_R4) - stmia r1, {r4-r14} - - /* Save the current cpsr */ - - mrs r2, cpsr /* R3 = CPSR value */ - add r1, r0, #(4*REG_CPSR) - str r2, [r1] - - /* Finally save the return address as the PC so that we - * return to the exit from this function. - */ - - add r1, r0, #(4*REG_PC) - str lr, [r1] - - /* Return 0 */ - - mov r0, #0 /* Return value == 0 */ - mov pc, lr /* Return */ - .size up_saveusercontext, . - up_saveusercontext - |