start12.c

9s12dg128b freesicale智能车程序

#if defined(__HCS12X__) && defined(FAR_DATA)
#if defined(__OPTIMIZE_FOR_SIZE__)               /* -os, default */
Copy:        PSHA
             LDAA  1,X+
             GSTAA  1,Y+                    ; move a byte from ROM to the data area
             PULA
             __FEED_COP_IN_HLI()            ; feed the COP if necessary /*lint !e505 !e522 asm code */
             DBNE  D,Copy                   ; copy-byte loop
#else
             LSRD                           ; /2 and save bit 0 in the carry
             BEQ    Copy1                   ; do we copy more than 1 byte?

Copy:        PSHD
             LDD   2,X+
             GSTD  2,Y+                     ; move a word from ROM to the data area
             PULD
             __FEED_COP_IN_HLI()            ; feed the COP if necessary /*lint !e505 !e522 asm code */
             DBNE  D,Copy                   ; copy-word loop
Copy1:
             BCC   NextBlock                ; handle last byte?
             LDAA  1,X+
             GSTAA  1,Y+                    ; move a byte from ROM to the data area
#endif
#elif defined(__OPTIMIZE_FOR_SIZE__)               /* -os, default */
Copy:        MOVB  1,X+,1,Y+                ; move a byte from ROM to the data area
             __FEED_COP_IN_HLI()            ; feed the COP if necessary /*lint !e505 !e522 asm code */
             DBNE  D,Copy                   ; copy-byte loop
#else /* __OPTIMIZE_FOR_TIME__ */
             LSRD                           ; /2 and save bit 0 in the carry
             BEQ   Copy1                    ; do we copy more than 1 byte?
Copy:        MOVW  2,X+,2,Y+                ; move a word from ROM to the data area
             __FEED_COP_IN_HLI()            ; feed the COP if necessary /*lint !e505 !e522 asm code */
             DBNE  D,Copy                   ; copy-word loop
Copy1:
             BCC   NextBlock                ; handle last byte?
             MOVB  1,X+,1,Y+                ; copy the last byte
#endif /* __OPTIMIZE_FOR_SIZE__/__OPTIMIZE_FOR_TIME__ */
             BRA   NextBlock
funcInits:                                  ; call of global construtors is only in c++ necessary
#if defined(__cplusplus)
#if defined(__ELF_OBJECT_FILE_FORMAT__)
#if defined( __BANKED__) || defined(__LARGE__)
             LDY   _startupData.nofInitBodies; load number of cpp.
             BEQ   done                     ; if cppcount == 0, goto done
             LDX   _startupData.initBodies  ; load address of first module to initialize
nextInit:
             LEAX   3,X                     ; increment to next init
             PSHX                           ; save address of next function to initialize
             PSHY                           ; save cpp counter
             CALL  [-3,X]                   ; use double indirect call to load the page register also
             PULY                           ; restore cpp counter
             PULX                           ; restore actual address
             DEY                            ; decrement cpp counter
             BNE    nextInit
#else  /* defined( __BANKED__) || defined(__LARGE__) */

             LDD   _startupData.nofInitBodies; load number of cpp.
             BEQ   done                     ; if cppcount == 0, goto done
             LDX   _startupData.initBodies  ; load address of first module to initialize
nextInit:
             LDY   2,X+                     ; load address of first module to initialize
             PSHD
             PSHX                           ; save actual address
             JSR   0,Y                      ; call initialization function
             PULX                           ; restore actual address
             PULD                           ; restore cpp counter
             DBNE D, nextInit
#endif /* defined( __BANKED__) || defined(__LARGE__) */
#else /* __ELF_OBJECT_FILE_FORMAT__  */
             LDX   _startupData.mInits      ; load address of first module to initialize
#if defined( __BANKED__) || defined(__LARGE__)
nextInit:    LDY   3,X+                     ; load address of initialization function
             BEQ   done                     ; stop when address  == 0
                                            ; in common environments the offset of a function is never 0, so this test could be avoided
#ifdef __InitFunctionsMayHaveOffset0__
             BRCLR -1,X, done, 0xff         ; stop when address  == 0
#endif  /* __InitFunctionsMayHaveOffset0__ */
             PSHX                           ; save address of next function to initialize
             CALL  [-3,X]                   ; use double indirect call to load the page register also
#else  /* defined( __BANKED__) || defined(__LARGE__) */
nextInit:
             LDY   2,X+                     ; load address of first module to initialize
             BEQ   done                     ; stop when address of function == 0
             PSHX                           ; save actual address
             JSR   0,Y                      ; call initialization function
#endif /* defined( __BANKED__) || defined(__LARGE__) */
             PULX                           ; restore actual address
             BRA   nextInit
#endif  /* __ELF_OBJECT_FILE_FORMAT__  */
done:
#endif /* __cplusplus */
   }
}
#endif /* __ONLY_INIT_SP */

#if defined( __ELF_OBJECT_FILE_FORMAT__) && defined(__cplusplus ) && 0 /* the call to main does not support to return anymore */

#if !defined(FAR_DATA) && (defined( __BANKED__) || defined(__LARGE__))
static void __far Fini(void)
#else
static void Fini(void)
#endif
{
/* purpose:     1) call global destructors in C++ */
   __asm {
#if defined( __BANKED__) || defined(__LARGE__)

             LDY   _startupData.nofFiniBodies; load number of cpp.
             BEQ   done                     ; if cppcount == 0, goto done
             LDX   _startupData.finiBodies  ; load address of first module to finalize
nextInit2:
             LEAX   3,X                     ; increment to next init
             PSHX                           ; save address of next function to finalize
             PSHY                           ; save cpp counter
             CALL  [-3,X]                   ; use double indirect call to load the page register also
             PULY                           ; restore cpp counter
             PULX                           ; restore actual address
             DEY                            ; decrement cpp counter
             BNE    nextInit2
#else  /* defined( __BANKED__) || defined(__LARGE__) */

             LDD   _startupData.nofFiniBodies; load number of cpp.
             BEQ   done                     ; if cppcount == 0, goto done
             LDX   _startupData.finiBodies  ; load address of first module to finalize
nextInit2:
             LDY   2,X+                     ; load address of first module to finalize
             PSHD
             PSHX                           ; save actual address
             JSR   0,Y                      ; call finalize function
             PULX                           ; restore actual address
             PULD                           ; restore cpp counter
             DBNE D, nextInit2
#endif /* defined(__BANKED__) || defined(__LARGE__) */
done:;
   }
}
#endif


#include "non_bank.sgm"

#pragma MESSAGE DISABLE C12053 /* Stack-pointer change not in debugging-information */
#pragma NO_FRAME
#pragma NO_ENTRY
#if !defined(__SMALL__)
#pragma NO_EXIT
#endif

/* The function _Startup must be called in order to initialize global variables and to call main */
/* You can adapt this function or call it from your startup code to implement a different startup */
/* functionality. */

/* You should also setup the needed IO registers as WINDEF (HC12A4 only) or the COP registers to run */
/* on hardware */

/* to set the reset vector several ways are possible : */
/* 1. define the function with "interrupt 0" as done below in the first case */
/* 2. add the following line to your prm file : VECTOR ADDRESS 0xfffe _Startup */
/* of course, even more posibilities exists */
/* the reset vector must be set so that the application has a defined entry point */

#if defined(__SET_RESET_VECTOR__)
__EXTERN_C void __interrupt 0 _Startup(void) {
#else
__EXTERN_C void _Startup(void) {
#endif
/*  purpose:    1)  initialize the stack
                2)  initialize the RAM, copy down init data etc (Init)
                3)  call main;
    parameters: NONE
    called from: _PRESTART-code generated by the Linker
                 or directly referenced by the reset vector */

   /* initialize the stack pointer */
   INIT_SP_FROM_STARTUP_DESC(); /*lint !e522 asm code */ /* HLI macro definition in hidef.h */

#if defined(_HCS12_SERIALMON)
   /* for Monitor based software remap the RAM & EEPROM to adhere
      to EB386. Edit RAM and EEPROM sections in PRM file to match these. */
   ___INITRG = 0x00;  /* lock registers block to 0x0000 */
   ___INITRM = 0x39;  /* lock Ram to end at 0x3FFF */
   ___INITEE = 0x09;  /* lock EEPROM block to end at 0x0fff */
#endif

   /* Here user defined code could be inserted, the stack could be used */
#if defined(_DO_DISABLE_COP_)
   _DISABLE_COP();
#endif

   /* Example : Set up WinDef Register to allow Paging */
#ifdef HC812A4 /* HC12 A4 derivative needs WINDEF to configure which pages are available */
#if  (__ENABLE_EPAGE__ != 0 ||  __ENABLE_DPAGE__ != 0 || __ENABLE_PPAGE__ != 0)
   WINDEF= __ENABLE_EPAGE__ | __ENABLE_DPAGE__  | __ENABLE_PPAGE__;
#endif
#endif


#if defined(__DO_SET_MMCTL1__)
  /* Set the MMCTL1 byte. Please use for HCS12XE and change the bits according   */
  /* to your configuration.                                                      */
  /* Note: MMCTL1 is write once therefore please adapt this initialization here. */
  /* This has to be done prior to the call to Init.                              */
#define _MMCTL1_ADR (0x00000013)
#define _MMCTL1_BIT_TGMRAMON (1<<7)  /* EEE Tag RAM and FTM SCRATCH RAM visible in the memory map */
#define _MMCTL1_BIT_EEEIFRON (1<<5)  /* EEE IFR visible in the memory map                         */
#define _MMCTL1_BIT_PGMIFRON (1<<4)  /* Program IFR visible in the memory map                     */
#define _MMCTL1_BIT_RAMHM    (1<<3)  /* RAM only in the higher half of the memory map             */
#define _MMCTL1_BIT_EROMON   (1<<2)  /* Enables emulated Flash or ROM memory in the memory map    */
#define _MMCTL1_BIT_ROMHM    (1<<1)  /* FLASH or ROM only in higher Half of Memory Map            */
#define _MMCTL1_BIT_ROMON    (1<<0)  /* Enable FLASH or ROM in the memory map                     */

#define _MMCTL1_SET(value)   ((*(volatile unsigned char*)_MMCTL1_ADR)= (value))

   _MMCTL1_SET(_MMCTL1_BIT_ROMON | _MMCTL1_BIT_EROMON | _MMCTL1_BIT_RAMHM | _MMCTL1_BIT_ROMHM);
    
#endif

#ifndef __ONLY_INIT_SP
   Init(); /* zero out, copy down, call constructors */
#endif

   /* Here user defined code could be inserted, all global variables are initilized */
#if defined(_DO_ENABLE_COP_)
   _ENABLE_COP(1);
#endif


   /* call main() */
   main();
}