3340acc7ae
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2358 42af7a65-404d-4744-a932-0658087f49c3
153 lines
5.2 KiB
C
153 lines
5.2 KiB
C
/**************************************************************************
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* up_internal.h
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*
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* Copyright (C) 2007, 2009 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
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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_UP_INTERNAL_H
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#define __ARCH_UP_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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#include <stdint.h>
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#include <stdbool.h>
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#include <arch/irq.h>
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#if defined(CONFIG_ARCH_BOARD_PJRC_87C52)
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# include <arch/board/pjrc.h>
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#else
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# warning "805x board not recognized"
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#endif
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/**************************************************************************
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* Public Definitions
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**************************************************************************/
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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 is the top of the stack containing the interrupt
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* stack frame. It is set when processing an interrupt. It
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* is also cleared when the interrupt returns so this can
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* also be used like a boolean indication that we are in an
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* interrupt.
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*/
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extern uint8_t g_irqtos;
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/* Registers are saved in the following global array during
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* interrupt processing. If a context switch is performed
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* during the interrupt handling, these registers will be
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* copied into the TCB again (NOTE: We could save a copy
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* if the interrupt handling logic saved the registers
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* directly into (_TCB*)g_readytorun.head->xcp.regs).
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*/
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extern uint8_t g_irqregs[REGS_SIZE];
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/* If during execution of an interrup handler, a context
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* switch must be performed, the follwing will be set to
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* to that address of the relevant context structure. The
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* actual switch will be deferred until the time that the
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* the interrupt exits.
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*/
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extern FAR struct xcptcontext *g_irqcontext;
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/* It is faster to look up 8-bit shifts in this table than
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* to comput them.
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*/
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extern const uint8_t g_ntobit[8];
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#endif /* __ASSEMBLY */
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/**************************************************************************
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* Public Function Prototypes
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**************************************************************************/
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#ifndef __ASSEMBLY__
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#if CONFIG_MM_REGIONS > 1
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extern void up_addregion(void);
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#endif
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extern void up_delay(uint8_t milliseconds) __naked;
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extern void up_irqinitialize(void);
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extern void up_restorecontext(FAR struct xcptcontext *context) _naked;
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extern void up_restoreregisters(FAR uint8_t *regs) _naked;
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extern uint8_t up_savecontext(FAR struct xcptcontext *context) __naked;
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extern void up_saveregisters(FAR uint8_t *regs) _naked;
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extern void up_saveirqcontext(FAR struct xcptcontext *context);
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extern void up_timerinit(void);
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/* Defined in up_debug.c */
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#if defined(CONFIG_ARCH_BRINGUP)
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extern void up_puthex(uint8_t hex) __naked;
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extern void up_puthex16(int hex) __naked;
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extern void up_putnl(void) __naked;
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extern void up_puts(__code char *ptr);
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#endif
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#if defined(CONFIG_FRAME_DUMP) && defined(CONFIG_ARCH_BRINGUP)
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extern void up_dumpstack(void);
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extern void up_dumpframe(FAR struct xcptcontext *context);
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#else
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# define up_dumpstack()
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# define up_dumpframe(x)
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#endif
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/* Defined in board/up_leds.c */
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#ifdef CONFIG_ARCH_LEDS
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extern void up_ledinit(void);
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extern void up_ledon(uint8_t led);
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extern void up_ledoff(uint8_t led);
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#else
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# define up_ledinit()
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# define up_ledon(led)
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# define up_ledoff(led)
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#endif
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#endif /* __ASSEMBLY */
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#endif /* __ARCH_UP_INTERNAL_H */
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