mirror of
https://github.com/apache/nuttx.git
synced 2026-06-06 00:14:22 +08:00
Add basic context switching logic
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3682 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo
@@ -63,7 +63,7 @@
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#define AT90USB_IRQ_INT5 5 /* 0x000c External Interrupt Request 5 */
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#define AT90USB_IRQ_INT6 6 /* 0x000e External Interrupt Request 6 */
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#define AT90USB_IRQ_INT7 7 /* 0x0010 External Interrupt Request 7 */
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#define AT90USB_IRQ_PCINT0 8 /* 0x0012 PCINT0 Pin Change Interrupt Request 0 */
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#define AT90USB_IRQ_PCINT0 8 /* 0x0012 Pin Change Interrupt Request 0 */
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#define AT90USB_IRQ_USBGEN 9 /* 0x0014 USB General USB General Interrupt request */
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#define AT90USB_IRQ_USBEP 10 /* 0x0016 USB Endpoint/Pipe USB ENdpoint/Pipe Interrupt request */
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#define AT90USB_IRQ_WDT 11 /* 0x0018 Watchdog Time-out Interrupt */
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@@ -52,12 +52,46 @@
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****************************************************************************/
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/* Register state save array indices */
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#define REG_Rx 0 /* Just a placeholder */
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/* Size of the register state save array (in bytes?) */
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#define REG_SPH 0 /* Stack pointer on exception entry */
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#define REG_SPL 1
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#define REG_R27 2 /* r26-r27 */
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#define REG_R26 3
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#define REG_R31 4 /* r18-r31 */
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#define REG_R30 5
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#define REG_R29 6
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#define REG_R28 7
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#define REG_R25 8 /* r25 */
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#define REG_R23 9 /* r2-r23 */
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#define REG_R22 10
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#define REG_R21 11
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#define REG_R20 12
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#define REG_R19 13
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#define REG_R18 14
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#define REG_R17 15
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#define REG_R16 16
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#define REG_R15 17
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#define REG_R14 18
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#define REG_R13 19
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#define REG_R12 20
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#define REG_R11 21
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#define REG_R10 22
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#define REG_R9 23
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#define REG_R8 24
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#define REG_R7 25
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#define REG_R6 26
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#define REG_R5 27
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#define REG_R4 28
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#define REG_R3 29
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#define REG_R2 30
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#define REG_R1 31 /* r1 - the "zero" register */
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#define REG_SREG 32 /* Status register */
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#define REG_R0 33 /* r0 */
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#define REG_R24 34 /* r24 */
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#define XCPTCONTEXT_REGS 1
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/* Size of the register state save array (in bytes) */
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#define XCPTCONTEXT_REGS 35
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/****************************************************************************
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* Public Types
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@@ -63,20 +63,20 @@
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* files
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*/
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typedef signed char _int8_t;
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typedef signed char _int8_t; /* char is 8-bits */
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typedef unsigned char _uint8_t;
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typedef signed short _int16_t;
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typedef unsigned short _uint16_t;
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typedef signed int _int16_t; /* int is 16-bits */
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typedef unsigned int _uint16_t;
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typedef signed int _int32_t;
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typedef unsigned int _uint32_t;
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typedef signed long _int32_t; /* long is 32-bits */
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typedef unsigned long _uint32_t;
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typedef signed long long _int64_t;
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typedef signed long long _int64_t; /* long long is 64-bits */
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typedef unsigned long long _uint64_t;
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#define __INT64_DEFINED
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/* A pointer is 4 bytes */
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/* A pointer is 2 bytes */
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typedef signed int _intptr_t;
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typedef unsigned int _uintptr_t;
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@@ -39,15 +39,15 @@ HEAD_ASRC = at90usb_head.S
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# Common AVR files
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CMN_ASRCS =
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CMN_CSRCS = up_allocateheap.c up_createstack.c up_exit.c up_idle.c \
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up_initialize.c up_interruptcontext.c up_lowputs.c up_mdelay.c \
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up_modifyreg8.c up_modifyreg16.c up_modifyreg32.c up_puts.c \
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up_releasestack.c up_udelay.c up_usestack.c
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CMN_ASRCS = up_switchcontext.S
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CMN_CSRCS = up_allocateheap.c up_copystate.c up_createstack.c up_exit.c \
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up_idle.c up_initialize.c up_interruptcontext.c up_lowputs.c \
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up_mdelay.c up_modifyreg8.c up_modifyreg16.c up_modifyreg32.c \
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up_puts.c up_releasestack.c up_udelay.c up_usestack.c
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# Required aT90USB files
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CHIP_ASRCS =
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CHIP_ASRCS = at90usb_exceptions.S
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CHIP_CSRCS =
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# Configuration-dependent aT90USB files
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Executable
+125
@@ -0,0 +1,125 @@
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/********************************************************************************************
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* arch/avr/src/at90usb/at90usb_exceptions.S
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*
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* Copyright (C) 2011 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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/********************************************************************************************
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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 "excptmacros.h"
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/********************************************************************************************
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* Pre-processor Definitions
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********************************************************************************************/
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/********************************************************************************************
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* External Symbols
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********************************************************************************************/
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.file "at90usb_exceptions.S"
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.global up_doirq
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/********************************************************************************************
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* Macros
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********************************************************************************************/
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/********************************************************************************************
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* Exception Vector Handlers
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********************************************************************************************/
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.section .handlers, "ax", @progbits
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HANDLER at90usb_int0, ATMEGA_IRQ_INT0, excpt_common /* External interrupt request 0 */
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HANDLER at90usb_int1, ATMEGA_IRQ_INT1, excpt_common /* External interrupt request 1 */
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HANDLER at90usb_int2, ATMEGA_IRQ_INT2, excpt_common /* External interrupt request 2 */
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HANDLER at90usb_int3, ATMEGA_IRQ_INT3, excpt_common /* External interrupt request 3 */
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HANDLER at90usb_int4, ATMEGA_IRQ_INT4, excpt_common /* External interrupt request 4 */
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HANDLER at90usb_int5, ATMEGA_IRQ_INT5, excpt_common /* External interrupt request 5 */
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HANDLER at90usb_int6, ATMEGA_IRQ_INT6, excpt_common /* External interrupt request 6 */
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HANDLER at90usb_int7, ATMEGA_IRQ_INT7, excpt_common /* External interrupt request 7 */
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HANDLER at90usb_pcint0, AT90USB_IRQ_PCINT0, excpt_common /* Pin Change Interrupt Request 0 */
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HANDLER at90usb_usbgen, AT90USB_IRQ_USBGEN, excpt_common /* USB General USB General Interrupt request */
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HANDLER at90usb_usbep, AT90USB_IRQ_USBEP, excpt_common /* USB Endpoint/Pipe USB ENdpoint/Pipe Interrupt request */
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HANDLER at90usb_wdt, AT90USB_IRQ_WDT, excpt_common /* Watchdog Time-out Interrupt */
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HANDLER at90usb_t2compa, AT90USB_IRQ_T2COMPA, excpt_common /* TIMER2 COMPA Timer/Counter2 Compare Match A */
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HANDLER at90usb_t2compb, AT90USB_IRQ_T2COMPB, excpt_common /* TIMER2 COMPA Timer/Counter2 Compare Match B */
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HANDLER at90usb_t2ovf, ATMEGA_IRQ_T2OVF, excpt_common /* TIMER2 OVF timer/counter2 overflow */
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HANDLER at90usb_t1capt, ATMEGA_IRQ_T1CAPT, excpt_common /* TIMER1 CAPT timer/counter1 capture event */
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HANDLER at90usb_t1compa, ATMEGA_IRQ_T1COMPA, excpt_common /* TIMER1 COMPA timer/counter1 compare match A */
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HANDLER at90usb_t1compb, ATMEGA_IRQ_T1COMPB, excpt_common /* TIMER1 COMPB timer/counter1 compare match B */
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HANDLER at90usb_t1compc, ATMEGA_IRQ_T1COMPC, excpt_common /* TIMER1 COMPC timer/counter1 compare match C */
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HANDLER at90usb_t1ovf, ATMEGA_IRQ_T1OVF, excpt_common /* TIMER1 OVF timer/counter1 overflow */
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HANDLER at90usb_t0compa, AT90USB_IRQ_T0COMPA, excpt_common /* TIMER0 COMPA Timer/Counter0 Compare Match A */
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HANDLER at90usb_t0compb, AT90USB_IRQ_T0COMPB, excpt_common /* TIMER0 COMPB Timer/Counter0 Compare Match B */
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HANDLER at90usb_t0ovf, ATMEGA_IRQ_T0OVF, excpt_common /* TIMER0 OVF timer/counter0 overflow */
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HANDLER at90usb_spi, ATMEGA_IRQ_SPI, excpt_common /* STC SPI serial transfer complete */
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HANDLER at90usb_u1rx, ATMEGA_IRQ_U1RX, excpt_common /* USART1 RX complete */
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HANDLER at90usb_u1dre, ATMEGA_IRQ_U1DRE, excpt_common /* USART1 data register empty */
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HANDLER at90usb_u1tx, ATMEGA_IRQ_U1TX, excpt_common /* USART1 TX complete */
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HANDLER at90usb_anacomp, ATMEGA_IRQ_ANACOMP, excpt_common /* ANALOG COMP analog comparator */
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HANDLER at90usb_adc, ATMEGA_IRQ_ADC, excpt_common /* ADC conversion complete */
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HANDLER at90usb_ee, ATMEGA_IRQ_EE, excpt_common /* EEPROM ready */
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HANDLER at90usb_t3capt, ATMEGA_IRQ_T3CAPT, excpt_common /* TIMER3 CAPT timer/counter3 capture event */
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HANDLER at90usb_t3compa, ATMEGA_IRQ_T3COMPA, excpt_common /* TIMER3 COMPA timer/counter3 compare match a */
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HANDLER at90usb_t3compb, ATMEGA_IRQ_T3COMPB, excpt_common /* TIMER3 COMPB timer/counter3 compare match b */
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HANDLER at90usb_t3compc, ATMEGA_IRQ_T3COMPC, excpt_common /* TIMER3 COMPC timer/counter3 compare match c */
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HANDLER at90usb_t3ovf, ATMEGA_IRQ_T3OVF, excpt_common /* TIMER3 OVF timer/counter3 overflow */
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HANDLER at90usb_twi, ATMEGA_IRQ_TWI, excpt_common /* TWI two-wire serial interface */
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HANDLER at90usb_spmrdy, ATMEGA_IRQ_SPMRDY, excpt_common /* Store program memory ready */
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/* Common exception handling logic. */
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excpt_common:
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#warning "Missing Logic"
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/****************************************************************************************************
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* Name: up_interruptstack
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****************************************************************************************************/
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#if CONFIG_ARCH_INTERRUPTSTACK > 0
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.bss
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.align 4
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.globl up_interruptstack
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.type up_interruptstack, object
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up_interruptstack:
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.skip CONFIG_ARCH_INTERRUPTSTACK
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.Lintstackbase:
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.size up_interruptstack, .-up_interruptstack
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#endif
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.end
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@@ -38,7 +38,7 @@
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****************************************************************************/
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#include <nuttx/config.h>
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#define __AVR_ATmega128__
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#include <avr/io.h>
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#include <avr/sfr_defs.h>
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@@ -83,7 +83,7 @@
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.global at90usb_int5 /* External interrupt request 5 */
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.global at90usb_int6 /* External interrupt request 6 */
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.global at90usb_int7 /* External interrupt request 7 */
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.global at90usb_pcint0 /* PCINT0 Pin Change Interrupt Request 0 */
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.global at90usb_pcint0 /* Pin Change Interrupt Request 0 */
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.global at90usb_usbgen /* USB General USB General Interrupt request */
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.global at90usb_usbep /* USB Endpoint/Pipe USB ENdpoint/Pipe Interrupt request */
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.global at90usb_wdt /* Watchdog Time-out Interrupt */
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@@ -39,15 +39,15 @@ HEAD_ASRC = atmega_head.S
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# Common AVR files
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CMN_ASRCS =
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CMN_CSRCS = up_allocateheap.c up_createstack.c up_exit.c up_idle.c \
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up_initialize.c up_interruptcontext.c up_lowputs.c up_mdelay.c \
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up_modifyreg8.c up_modifyreg16.c up_modifyreg32.c up_puts.c \
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up_releasestack.c up_udelay.c up_usestack.c
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CMN_ASRCS = up_switchcontext.S
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CMN_CSRCS = up_allocateheap.c up_copystate.c up_createstack.c up_exit.c \
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up_idle.c up_initialize.c up_interruptcontext.c up_lowputs.c \
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up_mdelay.c up_modifyreg8.c up_modifyreg16.c up_modifyreg32.c \
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up_puts.c up_releasestack.c up_udelay.c up_usestack.c
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# Required ATMEGA files
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CHIP_ASRCS =
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CHIP_ASRCS = atmega_exceptions.S
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CHIP_CSRCS =
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# Configuration-dependent ATMEGA files
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Executable
+118
@@ -0,0 +1,118 @@
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/********************************************************************************************
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* arch/avr/src/atmega/atmega_exceptions.S
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*
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* Copyright (C) 2011 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
|
||||
* 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.
|
||||
*
|
||||
********************************************************************************************/
|
||||
|
||||
/********************************************************************************************
|
||||
* Included Files
|
||||
********************************************************************************************/
|
||||
|
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#include <nuttx/config.h>
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#include <arch/irq.h>
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#include "excptmacros.h"
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/********************************************************************************************
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* External Symbols
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********************************************************************************************/
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.file "atmega_exceptions.S"
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.global up_doirq
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/********************************************************************************************
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* Macros
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********************************************************************************************/
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||||
|
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/********************************************************************************************
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* Exception Vector Handlers
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********************************************************************************************/
|
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.section .handlers, "ax", @progbits
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HANDLER atmega_int0, ATMEGA_IRQ_INT0, excpt_common /* External interrupt request 0 */
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HANDLER atmega_int1, ATMEGA_IRQ_INT1, excpt_common /* External interrupt request 1 */
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HANDLER atmega_int2, ATMEGA_IRQ_INT2, excpt_common /* External interrupt request 2 */
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HANDLER atmega_int3, ATMEGA_IRQ_INT3, excpt_common /* External interrupt request 3 */
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HANDLER atmega_int4, ATMEGA_IRQ_INT4, excpt_common /* External interrupt request 4 */
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HANDLER atmega_int5, ATMEGA_IRQ_INT5, excpt_common /* External interrupt request 5 */
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HANDLER atmega_int6, ATMEGA_IRQ_INT6, excpt_common /* External interrupt request 6 */
|
||||
HANDLER atmega_int7, ATMEGA_IRQ_INT7, excpt_common /* External interrupt request 7 */
|
||||
HANDLER atmega_t2comp, ATMEGA_IRQ_T2COMP, excpt_common /* TIMER2 COMP timer/counter2 compare match */
|
||||
HANDLER atmega_t2ovf, ATMEGA_IRQ_T2OVF, excpt_common /* TIMER2 OVF timer/counter2 overflow */
|
||||
HANDLER atmega_t1capt, ATMEGA_IRQ_T1CAPT, excpt_common /* TIMER1 CAPT timer/counter1 capture event */
|
||||
HANDLER atmega_t1compa, ATMEGA_IRQ_T1COMPA, excpt_common /* TIMER1 COMPA timer/counter1 compare match a */
|
||||
HANDLER atmega_t1compb, ATMEGA_IRQ_T1COMPB, excpt_common /* TIMER1 COMPB timer/counter1 compare match b */
|
||||
HANDLER atmega_t1ovf, ATMEGA_IRQ_T1OVF, excpt_common /* TIMER1 OVF timer/counter1 overflow */
|
||||
HANDLER atmega_t0comp, ATMEGA_IRQ_T0COMP, excpt_common /* TIMER0 COMP timer/counter0 compare match */
|
||||
HANDLER atmega_t0ovf, ATMEGA_IRQ_T0OVF, excpt_common /* TIMER0 OVF timer/counter0 overflow */
|
||||
HANDLER atmega_spi, ATMEGA_IRQ_SPI, excpt_common /* STC SPI serial transfer complete */
|
||||
HANDLER atmega_u0rx, ATMEGA_IRQ_U0RX, excpt_common /* USART0 RX complete */
|
||||
HANDLER atmega_u0dre, ATMEGA_IRQ_U0DRE, excpt_common /* USART0 data register empty */
|
||||
HANDLER atmega_u0tx, ATMEGA_IRQ_U0TX, excpt_common /* USART0 TX complete */
|
||||
HANDLER atmega_adc, ATMEGA_IRQ_ADC, excpt_common /* ADC conversion complete */
|
||||
HANDLER atmega_ee, ATMEGA_IRQ_EE, excpt_common /* EEPROM ready */
|
||||
HANDLER atmega_anacomp, ATMEGA_IRQ_ANACOMP, excpt_common /* ANALOG COMP analog comparator */
|
||||
HANDLER atmega_t1compc, ATMEGA_IRQ_T1COMPC, excpt_common /* TIMER1 COMPC timer/countre1 compare match c */
|
||||
HANDLER atmega_t3capt, ATMEGA_IRQ_T3CAPT, excpt_common /* TIMER3 CAPT timer/counter3 capture event */
|
||||
HANDLER atmega_t3compa, ATMEGA_IRQ_T3COMPA, excpt_common /* TIMER3 COMPA timer/counter3 compare match a */
|
||||
HANDLER atmega_t3compb, ATMEGA_IRQ_T3COMPB, excpt_common /* TIMER3 COMPB timer/counter3 compare match b */
|
||||
HANDLER atmega_t3compc, ATMEGA_IRQ_T3COMPC, excpt_common /* TIMER3 COMPC timer/counter3 compare match c */
|
||||
HANDLER atmega_t3ovf, ATMEGA_IRQ_T3OVF, excpt_common /* TIMER3 OVF timer/counter3 overflow */
|
||||
HANDLER atmega_u1rx, ATMEGA_IRQ_U1RX, excpt_common /* USART1 RX complete */
|
||||
HANDLER atmega_u1dre, ATMEGA_IRQ_U1DRE, excpt_common /* USART1 data register empty */
|
||||
HANDLER atmega_u1tx, ATMEGA_IRQ_U1TX, excpt_common /* USART1 TX complete */
|
||||
HANDLER atmega_twi, ATMEGA_IRQ_TWI, excpt_common /* TWI two-wire serial interface */
|
||||
HANDLER atmega_spmrdy, ATMEGA_IRQ_SPMRDY, excpt_common /* Store program memory ready */
|
||||
|
||||
/* Common exception handling logic. */
|
||||
|
||||
excpt_common:
|
||||
#warning "Missing Logic"
|
||||
|
||||
/****************************************************************************************************
|
||||
* Name: up_interruptstack
|
||||
****************************************************************************************************/
|
||||
|
||||
#if CONFIG_ARCH_INTERRUPTSTACK > 0
|
||||
.bss
|
||||
.align 4
|
||||
.globl up_interruptstack
|
||||
.type up_interruptstack, object
|
||||
up_interruptstack:
|
||||
.skip CONFIG_ARCH_INTERRUPTSTACK
|
||||
.Lintstackbase:
|
||||
.size up_interruptstack, .-up_interruptstack
|
||||
#endif
|
||||
.end
|
||||
|
||||
@@ -38,7 +38,7 @@
|
||||
****************************************************************************/
|
||||
|
||||
#include <nuttx/config.h>
|
||||
#define __AVR_ATmega128__
|
||||
|
||||
#include <avr/io.h>
|
||||
#include <avr/sfr_defs.h>
|
||||
|
||||
|
||||
Executable
+524
File diff suppressed because it is too large
Load Diff
@@ -0,0 +1,86 @@
|
||||
/****************************************************************************
|
||||
* arch/avr/src/avr/up_copystate.c
|
||||
*
|
||||
* 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.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Included Files
|
||||
****************************************************************************/
|
||||
|
||||
#include <nuttx/config.h>
|
||||
|
||||
#include <stdint.h>
|
||||
#include <arch/irq.h>
|
||||
|
||||
#include "up_internal.h"
|
||||
|
||||
/****************************************************************************
|
||||
* Pre-processor Definitions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Private Data
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Private Functions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Public Functions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Name: up_copystate
|
||||
****************************************************************************/
|
||||
|
||||
/* Really just a memcpy */
|
||||
|
||||
void up_copystate(uint8_t *dest, uint8_t *src)
|
||||
{
|
||||
int i;
|
||||
|
||||
/* The state is copied from the stack to the TCB, but only a reference is
|
||||
* passed to get the state from the TCB. So the following check avoids
|
||||
* copying the TCB save area onto itself:
|
||||
*/
|
||||
|
||||
if (src != dest)
|
||||
{
|
||||
for (i = 0; i < XCPTCONTEXT_REGS; i++)
|
||||
{
|
||||
*dest++ = *src++;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
Executable
+134
@@ -0,0 +1,134 @@
|
||||
/************************************************************************************
|
||||
* arch/avr/src/avr/up_switchcontext.S
|
||||
*
|
||||
* 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.
|
||||
*
|
||||
************************************************************************************/
|
||||
|
||||
/************************************************************************************
|
||||
* Included Files
|
||||
************************************************************************************/
|
||||
|
||||
#include <nuttx/config.h>
|
||||
|
||||
#include "excptmacros.h"
|
||||
|
||||
/************************************************************************************
|
||||
* Pre-processor Definitions
|
||||
************************************************************************************/
|
||||
|
||||
/************************************************************************************
|
||||
* Global Symbols
|
||||
************************************************************************************/
|
||||
|
||||
.file "up_switchcontext.S"
|
||||
|
||||
/************************************************************************************
|
||||
* Macros
|
||||
************************************************************************************/
|
||||
|
||||
/************************************************************************************
|
||||
* Public Functions
|
||||
************************************************************************************/
|
||||
|
||||
/************************************************************************************
|
||||
* Name: up_switchcontext
|
||||
*
|
||||
* Description:
|
||||
* Save the current thread context and restore the specified context. The full
|
||||
* C function prototype is:
|
||||
*
|
||||
* void up_switchcontext(uint8_t *saveregs, uint8_t *restoreregs);
|
||||
*
|
||||
* On Entry:
|
||||
* r24-r25: savregs
|
||||
* r22-r23: restoreregs
|
||||
*
|
||||
* Return:
|
||||
* up_switchcontext forces a context switch to the task "canned" in restoreregs.
|
||||
* It does not 'return' in the normal sense, rather, it will context switch back
|
||||
* to the function point. When it does 'return,' it is because the blocked
|
||||
* task hat was "pickeled" in the saveregs "can" is again ready to run and has
|
||||
* execution priority.
|
||||
*
|
||||
* Assumptions:
|
||||
* global interrupts disabled by the caller.
|
||||
*
|
||||
************************************************************************************/
|
||||
|
||||
.text
|
||||
.globl up_switchcontext
|
||||
.func up_switchcontext
|
||||
up_switchcontext:
|
||||
/* Use X ]r26:r27] to reference the save structure. (X is Call-used) */
|
||||
|
||||
movw r26, r24
|
||||
|
||||
/* Save the context to saveregs */
|
||||
|
||||
USER_SAVE
|
||||
|
||||
/* Then fall through to do the full context restore with r24-r5 = restoreregs */
|
||||
|
||||
movw r24, r22
|
||||
.endfunc
|
||||
|
||||
/****************************************************************************
|
||||
* Name: up_fullcontextrestore
|
||||
*
|
||||
* Descripion:
|
||||
* Restore the full-running context of a thread.
|
||||
*
|
||||
* Input Parameters:
|
||||
* r24-r25 = A pointer to the register save area of the thread to be restored.
|
||||
*
|
||||
* C Prototype:
|
||||
* void up_fullcontextrestore(uint8_t *regs);
|
||||
*
|
||||
* Assumptions:
|
||||
* Interrupts are disabled.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
.text
|
||||
.global up_fullcontextrestore
|
||||
.func up_fullcontextrestore
|
||||
up_fullcontextrestore:
|
||||
/* Use X ]r26:r27] to reference the restore structure. */
|
||||
|
||||
movw r26, r24
|
||||
|
||||
/* Restore the context from the TCB saved registers */
|
||||
|
||||
TCB_RESTORE
|
||||
.endfunc
|
||||
.end
|
||||
|
||||
@@ -41,7 +41,6 @@
|
||||
|
||||
#include <stdint.h>
|
||||
|
||||
#include "os_internal.h"
|
||||
#include "up_internal.h"
|
||||
|
||||
/****************************************************************************
|
||||
|
||||
@@ -1,5 +1,5 @@
|
||||
/****************************************************************************
|
||||
* arch/avr32/src/avr32/up_exceptions.S
|
||||
* arch/avr/src/avr32/up_exceptions.S
|
||||
*
|
||||
* Copyright (C) 2010 Gregory Nutt. All rights reserved.
|
||||
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
|
||||
|
||||
Reference in New Issue
Block a user