vectors.c

uCOSII在motorala单片机上的移植

/*
*********************************************************************************************************
*                                               uC/OS-II
*                                         The Real-Time Kernel
*
*                           (c) Copyright 1999, Jean J. Labrosse, Weston, FL
*                                          All Rights Reserved
*
*
*                                     68332 INTERRUPT VECTOR TABLE
*
* File : VECTORS.C
* By   : Jean J. Labrosse
*********************************************************************************************************
*/

#ifndef  OS_MASTER_FILE
#include "includes.h"
#endif

/*
*********************************************************************************************************
*                                           REVISION HISTORY
*
* $Log:   J:/software/ucos-ii/m683xx/sds/source/vc/vectors.c_v  $
*      
*         Rev 1.3   01 May 1999 11:51:40   JJL
*         ***************************** M683xx REL V1.05 ******************************
*         - Added check of OSIntNesting in OSIntExit68K() (see OS_CPU_A.S).
*      
*         Rev 1.2   29 Jun 1999 22:04:02   JJL
*         ***************************** M683xx REL V1.04 ******************************
*         - Added function OSIntExit68K() (see OS_CPU_A.S) which must now be JUMPed to
*           at the end of ALL ISRs.  Your ISR code MUST now look as follows:
*           
*           _YourISR:
*               ADDQ.B    #1,_OSIntNesting       ; OSIntNesting++
*               MOVEM.L   A0-A6/D0-D7,-(A7)      ; Save ALL registers 
*               ;   CLEAR the INTERRUPT source!
*               JSR       _YourISRHandler
*               JMP       _OSIntExit68K          ; Exit through uC/OS-II at end of ISR
*      
*           As you can see, you MUST increment OSIntNesting at the beginning of the ISR
*           and NOT call OSIntExit().  OSIntExit68K() knows to return to task level code 
*           because it examines the stack frame for the contents of the Status register 
*           (SR) that is pushed onto the stack when the CPU recognizes an interrupt.
*      
*         Rev 1.1   09 May 1999 11:06:56   JJL
*         ***************************** M683xx REL V1.03 ******************************
*         - The stack  adjustment constant in  OSIntCtxSw()  was set incorrectly.  The   
*           correct value  needed to be  10  instead of  18  because the  SDS compiler 
*           doesn't allocate local variables for OSIntExit().
*          
*         - The function  OSSetVect()  is OS_CPU_C.C didn't properly cast 'addr'.  The
*           correct statement is:
*              *pvect = (INT32U)addr;
*           instead of:
*              *pvect = (INT32U *)addr;
*      
*         Rev 1.0   07 Feb 1999 21:25:34   JJL
*         ***************************** M683xx REL V1.02 ******************************
*         - Initial release of the SDS port for uC/OS-II.  The revision number matches
*           that of other M683xx or M680x0 ports.
*********************************************************************************************************
*/

/*$PAGE*/
extern  void  START(void);
extern  void  STKTOP(void);

/*
*********************************************************************************************************
*                                                 68332
*                                         INTERRUPT VECTOR TABLE
*
* Description: This is the interrupt vector table.  Unused interrupts are vectored to NULL.
* Notes      : 1) You MUST define the vector that defines the address of your startup code.
*********************************************************************************************************
*/

void (* const OSVectorTbl[])(void) = {      /* This table begins at 0x00000000L                        */
    (void (*)())STKTOP,                     /* Vector #  0, 0x00000000: RESET, Initial SP              */
    (void (*)())START,                      /* Vector #  1, 0x00000004: RESET, Initial PC              */
                                            
    (void (*)())NULL,                       /* Vector #  2, 0x00000008: Bus Error                      */
    (void (*)())NULL,                       /* Vector #  3, 0x0000000C: Address Error                  */
    (void (*)())NULL,                       /* Vector #  4, 0x00000010: Illegal Instruction            */
    (void (*)())NULL,                       /* Vector #  5, 0x00000014: Zero Division                  */
    (void (*)())NULL,                       /* Vector #  6, 0x00000018: CHK, CHK2 Instruction          */
    (void (*)())NULL,                       /* Vector #  7, 0x0000001C: TRAPxx, TRAPV Instructions     */
    (void (*)())NULL,                       /* Vector #  8, 0x00000020: Privilege Violation            */
    (void (*)())NULL,                       /* Vector #  9, 0x00000024: Trace                          */
    (void (*)())NULL,                       /* Vector # 10, 0x00000028: Line 1010 Emulator             */
    (void (*)())NULL,                       /* Vector # 11, 0x0000002C: Line 1111 Emulator             */
    (void (*)())NULL,                       /* Vector # 12, 0x00000030: Hardware Breakpoint            */
    (void (*)())NULL,                       /* Vector # 13, 0x00000034: Coprocessor Protocol Violation */
    (void (*)())NULL,                       /* Vector # 14, 0x00000038: Format error                   */
    (void (*)())NULL,                       /* Vector # 15, 0x0000003C: Format error                   */
    (void (*)())NULL,                       /* Vector # 16, 0x00000040: Reserved                       */
    (void (*)())NULL,                       /* Vector # 17, 0x00000044: Reserved                       */
    (void (*)())NULL,                       /* Vector # 18, 0x00000048: Reserved                       */
    (void (*)())NULL,                       /* Vector # 19, 0x0000004C: Reserved                       */
    (void (*)())NULL,                       /* Vector # 20, 0x00000050: Reserved                       */
    (void (*)())NULL,                       /* Vector # 21, 0x00000054: Reserved                       */
    (void (*)())NULL,                       /* Vector # 22, 0x00000058: Reserved                       */
    (void (*)())NULL,                       /* Vector # 23, 0x0000005C: Reserved                       */
    (void (*)())NULL,                       /* Vector # 24, 0x00000060: Spurious interrupt             */
    (void (*)())NULL,                       /* Vector # 25, 0x00000064: Level 1 Interrupt Autovector   */
    (void (*)())NULL,                       /* Vector # 26, 0x00000068: Level 2 Interrupt Autovector   */
    (void (*)())NULL,                       /* Vector # 27, 0x0000006C: Level 3 Interrupt Autovector   */
    (void (*)())NULL,                       /* Vector # 28, 0x00000070: Level 4 Interrupt Autovector   */
    (void (*)())NULL,                       /* Vector # 29, 0x00000074: Level 5 Interrupt Autovector   */
    (void (*)())NULL,                       /* Vector # 30, 0x00000078: Level 6 Interrupt Autovector   */
    (void (*)())NULL,                       /* Vector # 31, 0x0000007C: Level 7 Interrupt Autovector   */