diff options
Diffstat (limited to 'nuttx/arch/dm320/src/up_fullcontextrestore.S')
| -rw-r--r-- | nuttx/arch/dm320/src/up_fullcontextrestore.S | 117 |
1 files changed, 0 insertions, 117 deletions
diff --git a/nuttx/arch/dm320/src/up_fullcontextrestore.S b/nuttx/arch/dm320/src/up_fullcontextrestore.S deleted file mode 100644 index 4d0303ba2..000000000 --- a/nuttx/arch/dm320/src/up_fullcontextrestore.S +++ /dev/null @@ -1,117 +0,0 @@ -/************************************************************************** - * up_fullcontextrestore.S - * - * Copyright (C) 2007 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 Gregory Nutt 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_fullcontextrestore - **************************************************************************/ - - .globl up_fullcontextrestore - .type up_fullcontextrestore, function -up_fullcontextrestore: - - /* On entry, a1 (r0) holds address of the register save area */ - - /* Recover all registers except for r0, r1, R15, and CPSR */ - - add r1, r0, #(4*REG_R2) /* Offset to REG_R2 storage */ - ldmia r1, {r2-r14} /* Recover registers */ - - /* Create a stack frame to hold the PC */ - - sub sp, sp, #(3*4) /* Frame for three registers */ - ldr r1, [r0, #(4*REG_R0)] /* Fetch the stored r0 value */ - str r1, [sp] /* Save it at the top of the stack */ - ldr r1, [r0, #(4*REG_R1)] /* Fetch the stored r1 value */ - str r1, [sp, #4] /* Save it in the stack */ - ldr r1, [r0, #(4*REG_PC)] /* Fetch the stored pc value */ - str r1, [sp, #8] /* Save it at the bottom of the frame */ - - /* Now we can restore the CPSR. We wait until we are completely - * finished with the context save data to do this. Restore the CPSR - * may re-enable and interrupts and we couldt be in a context - * where save structure is only protected by interrupts being disabled. - */ - - ldr r1, [r0, #(4*REG_CPSR)] /* Fetch the stored CPSR value */ - msr cpsr, r1 /* Set the CPSR */ - - /* Now recover r0 and r1 */ - - ldr r0, [sp] - ldr r1, [sp, #4] - add sp, sp, #(2*4) - - /* Then return to the address at the stop of the stack, - * destroying the stack frame - */ - - ldr pc, [sp], #4 - .size up_fullcontextrestore, . - up_fullcontextrestore - |