diff options
Diffstat (limited to 'nuttx/arch/arm/src/armv7-m/up_switchcontext.S')
-rwxr-xr-x | nuttx/arch/arm/src/armv7-m/up_switchcontext.S | 97 |
1 files changed, 0 insertions, 97 deletions
diff --git a/nuttx/arch/arm/src/armv7-m/up_switchcontext.S b/nuttx/arch/arm/src/armv7-m/up_switchcontext.S deleted file mode 100755 index 762e2066e..000000000 --- a/nuttx/arch/arm/src/armv7-m/up_switchcontext.S +++ /dev/null @@ -1,97 +0,0 @@ -/************************************************************************************ - * arch/arm/src/armv7-m/up_switchcontext.S - * - * Copyright (C) 2009-2011 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 <nuttx/config.h> -#include <arch/irq.h> - -#include "nvic.h" -#include "svcall.h" - -/************************************************************************************ - * Pre-processor Definitions - ************************************************************************************/ - -/************************************************************************************ - * Global Symbols - ************************************************************************************/ - - .syntax unified - .thumb - .file "up_switchcontext.S" - -/************************************************************************************ - * Macros - ************************************************************************************/ - -/************************************************************************************ - * Public Functions - ************************************************************************************/ - -/************************************************************************************ - * Name: up_switchcontext - * - * Description: - * Save the current thread context and restore the specified context. - * Full prototype is: - * - * void up_switchcontext(uint32_t *saveregs, uint32_t *restoreregs); - * - * Return: - * None - * - ************************************************************************************/ - - .thumb_func - .globl up_switchcontext - .type up_switchcontext, function -up_switchcontext: - - /* Perform the System call with R0=1, R1=saveregs, R2=restoreregs */ - - mov r2, r1 /* R2: restoreregs */ - mov r1, r0 /* R1: saveregs */ - mov r0, #SYS_switch_context /* R0: context switch */ - svc 0 /* Force synchronous SVCall (or Hard Fault) */ - - /* This call should not return */ - - bx lr /* Unnecessary ... will not return */ - .size up_switchcontext, .-up_switchcontext - .end - |