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/****************************************************************************
* arch/avr/src/avr32/up_internal.h
*
* Copyright (C) 2011 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.
*
****************************************************************************/
#ifndef __ARCH_AVR_SRC_AVR32_AVR32_INTERNAL_H
#define __ARCH_AVR_SRC_AVR32_AVR32_INTERNAL_H
/****************************************************************************
* Included Files
****************************************************************************/
#ifndef __ASSEMBLY__
# include <stdint.h>
#endif
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* Macros to handle saving and restore interrupt state. The state is copied
* from the stack to the TCB, but only a referenced is passed to get the
* state from the TCB.
*/
#define up_savestate(regs) up_copystate(regs, (uint32_t*)current_regs)
#define up_restorestate(regs) (current_regs = regs)
/****************************************************************************
* Public Types
****************************************************************************/
/****************************************************************************
* Public Variables
****************************************************************************/
#ifndef __ASSEMBLY__
/* This holds a references to the current interrupt level register storage
* structure. If is non-NULL only during interrupt processing.
*/
extern volatile uint32_ *current_regs;
/* This is the beginning of heap as provided from up_head.S. This is the first
* address in DRAM after the loaded program+bss+idle stack. The end of the
* heap is CONFIG_DRAM_END
*/
extern uint32_t g_heapbase;
#endif /* __ASSEMBLY__ */
/****************************************************************************
* Inline Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
#ifndef __ASSEMBLY__
extern void up_copystate(uint32_t *dest, uint32_t *src);
extern int up_saveusercontext(uint32_t *saveregs);
extern void up_fullcontextrestore(uint32_t *restoreregs) __attribute__ ((noreturn));
extern void up_switchcontext(uint32_t *saveregs, uint32_t *restoreregs);
extern uint32_t *up_doirq(int irq, uint32_t *regs);
#endif /* __ASSEMBLY__ */
#endif /* __ARCH_AVR_SRC_AVR32_AVR32_INTERNAL_H */
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