7a2692df6a
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5154 42af7a65-404d-4744-a932-0658087f49c3
140 lines
5.2 KiB
C
140 lines
5.2 KiB
C
/****************************************************************************
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* arch/avr/src/avr32/up_internal.h
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*
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* Copyright (C) 2011-2012 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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#ifndef __ARCH_AVR_SRC_AVR32_AVR32_INTERNAL_H
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#define __ARCH_AVR_SRC_AVR32_AVR32_INTERNAL_H
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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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#ifndef __ASSEMBLY__
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# include <nuttx/compiler.h>
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# include <stdint.h>
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#endif
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* Macros to handle saving and restore interrupt state. The state is copied
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* from the stack to the TCB, but only a referenced is passed to get the
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* state from the TCB.
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*/
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#define up_savestate(regs) up_copystate(regs, (uint32_t*)current_regs)
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#define up_restorestate(regs) (current_regs = regs)
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/****************************************************************************
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* Public Types
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****************************************************************************/
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/****************************************************************************
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* Public Variables
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****************************************************************************/
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#ifndef __ASSEMBLY__
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/* This holds a references to the current interrupt level register storage
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* structure. If is non-NULL only during interrupt processing.
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*/
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extern volatile uint32_t *current_regs;
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/* This is the beginning of heap as provided from up_head.S. This is the first
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* address in DRAM after the loaded program+bss+idle stack. The end of the
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* heap is CONFIG_DRAM_END
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*/
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extern uint32_t g_heapbase;
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#endif /* __ASSEMBLY__ */
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/****************************************************************************
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* Inline Functions
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****************************************************************************/
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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#ifndef __ASSEMBLY__
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/************************************************************************************
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* Name: up_copystate
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*
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* Description:
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* Copy the contents of a register state save structure from one location to
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* another.
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*
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************************************************************************************/
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extern void up_copystate(uint32_t *dest, uint32_t *src);
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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 full context of a saved thread/task.
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*
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************************************************************************************/
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extern void up_fullcontextrestore(uint32_t *restoreregs) noreturn_function;
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/************************************************************************************
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* Name: up_switchcontext
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*
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* Description:
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* Switch from one thread/task context to another.
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*
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************************************************************************************/
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extern void up_switchcontext(uint32_t *saveregs, uint32_t *restoreregs);
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/************************************************************************************
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* Name: up_doirq
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*
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* Description:
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* Dispatch an interrupt.
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*
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************************************************************************************/
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extern uint32_t *up_doirq(int irq, uint32_t *regs);
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#endif /* __ASSEMBLY__ */
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#endif /* __ARCH_AVR_SRC_AVR32_AVR32_INTERNAL_H */
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