80 lines
2.9 KiB
ArmAsm
80 lines
2.9 KiB
ArmAsm
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/************************************************************************************
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* arch/arm/src/armv8-m/gnu/up_fullcontextrestore.S
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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************************************************************************************/
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/************************************************************************************
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* Included Files
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************************************************************************************/
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#include <nuttx/config.h>
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#include <arch/irq.h>
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#include "nvic.h"
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#include "svcall.h"
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/************************************************************************************
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* Pre-processor Definitions
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************************************************************************************/
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/************************************************************************************
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* Public Symbols
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************************************************************************************/
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.syntax unified
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.thumb
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.file "up_fullcontextrestore.S"
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/************************************************************************************
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* Macros
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************************************************************************************/
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/************************************************************************************
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* Public Functions
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************************************************************************************/
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/************************************************************************************
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* Name: up_fullcontextrestore
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*
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* Description:
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* Restore the current thread context. Full prototype is:
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*
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* void up_fullcontextrestore(uint32_t *restoreregs) noreturn_function;
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*
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* Returned Value:
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* None
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*
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************************************************************************************/
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.thumb_func
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.globl up_fullcontextrestore
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.type up_fullcontextrestore, function
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up_fullcontextrestore:
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/* Perform the System call with R0=1 and R1=regs */
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mov r1, r0 /* R1: regs */
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mov r0, #SYS_restore_context /* R0: restore context */
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svc 0 /* Force synchronous SVCall (or Hard Fault) */
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/* This call should not return */
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bx lr /* Unnecessary ... will not return */
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.size up_fullcontextrestore, .-up_fullcontextrestore
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.end
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