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📄 access.lst

📁 P18F4610的汇编有关验证ACCESS区作用的代码.ACCESS区起什么作用这个迷惑了我一段时间最后还是通过汇编解开了.MCC18编译器.
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                                             static unsigned short curr_entry;                                              C:\mcc18\src\traditional\startup\c018i.c
                                             static short long data_ptr;                                                    C:\mcc18\src\traditional\startup\c018i.c
                                                                                                                            C:\mcc18\src\traditional\startup\c018i.c
                                             // Initialized data...                                                         C:\mcc18\src\traditional\startup\c018i.c
00002c   0e2a     MOVLW     0x2a             TBLPTR = (short long)&_cinit;                                                  C:\mcc18\src\traditional\startup\c018i.c
00002e   6ef6     MOVWF     0xf6,0x0                                                                                        
000030   0e00     MOVLW     0x0                                                                                             
000032   6ef7     MOVWF     0xf7,0x0                                                                                        
000034   0e00     MOVLW     0x0                                                                                             
000036   6ef8     MOVWF     0xf8,0x0                                                                                        
                                             _asm                                                                           C:\mcc18\src\traditional\startup\c018i.c
000038   0100     MOVLB     0x0                movlb data_ptr                                                               C:\mcc18\src\traditional\startup\c018i.c
00003a   0009     TBLRDPOSTINC                 tblrdpostinc                                                                 C:\mcc18\src\traditional\startup\c018i.c
00003c   50f5     MOVF      0xf5,0x0,0x0       movf TABLAT, 0, 0                                                            C:\mcc18\src\traditional\startup\c018i.c
00003e   6f85     MOVWF     0x85,0x1           movwf curr_entry, 1                                                          C:\mcc18\src\traditional\startup\c018i.c
000040   0009     TBLRDPOSTINC                 tblrdpostinc                                                                 C:\mcc18\src\traditional\startup\c018i.c
000042   50f5     MOVF      0xf5,0x0,0x0       movf TABLAT, 0, 0                                                            C:\mcc18\src\traditional\startup\c018i.c
000044   6f86     MOVWF     0x86,0x1           movwf curr_entry+1, 1                                                        C:\mcc18\src\traditional\startup\c018i.c
                                             _endasm                                                                        C:\mcc18\src\traditional\startup\c018i.c
                                               //while (curr_entry)                                                         C:\mcc18\src\traditional\startup\c018i.c
                                               //{                                                                          C:\mcc18\src\traditional\startup\c018i.c
                                               test:                                                                        C:\mcc18\src\traditional\startup\c018i.c
                                               _asm                                                                         C:\mcc18\src\traditional\startup\c018i.c
000046   e103     BNZ       0x4e                bnz 3                                                                       C:\mcc18\src\traditional\startup\c018i.c
000048   6785     TSTFSZ    0x85,0x1           tstfsz curr_entry, 1                                                         C:\mcc18\src\traditional\startup\c018i.c
00004a   d001     BRA       0x4e               bra 1                                                                        C:\mcc18\src\traditional\startup\c018i.c
                                               _endasm                                                                      C:\mcc18\src\traditional\startup\c018i.c
00004c   d03d     BRA       0xc8               goto done;                                                                   C:\mcc18\src\traditional\startup\c018i.c
                                                 /* Count down so we only have to look up the data in _cinit                C:\mcc18\src\traditional\startup\c018i.c
                                                  * once.                                                                   C:\mcc18\src\traditional\startup\c018i.c
                                                  *                                                                         C:\mcc18\src\traditional\startup\c018i.c
                                                  * At this point we know that TBLPTR points to the top of the current      C:\mcc18\src\traditional\startup\c018i.c
                                                  * entry in _cinit, so we can just start reading the from, to, and         C:\mcc18\src\traditional\startup\c018i.c
                                                  * size values.                                                            C:\mcc18\src\traditional\startup\c018i.c
                                                  */                                                                        C:\mcc18\src\traditional\startup\c018i.c
                                                 _asm                                                                       C:\mcc18\src\traditional\startup\c018i.c
                                           	/* read the source address */                                                   C:\mcc18\src\traditional\startup\c018i.c
00004e   0009     TBLRDPOSTINC             	tblrdpostinc                                                                    C:\mcc18\src\traditional\startup\c018i.c
000050   50f5     MOVF      0xf5,0x0,0x0   	movf TABLAT, 0, 0                                                               C:\mcc18\src\traditional\startup\c018i.c
000052   6f80     MOVWF     0x80,0x1       	movwf prom, 1                                                                   C:\mcc18\src\traditional\startup\c018i.c
000054   0009     TBLRDPOSTINC             	tblrdpostinc                                                                    C:\mcc18\src\traditional\startup\c018i.c
000056   50f5     MOVF      0xf5,0x0,0x0   	movf TABLAT, 0, 0                                                               C:\mcc18\src\traditional\startup\c018i.c
000058   6f81     MOVWF     0x81,0x1       	movwf prom+1, 1                                                                 C:\mcc18\src\traditional\startup\c018i.c
00005a   0009     TBLRDPOSTINC             	tblrdpostinc                                                                    C:\mcc18\src\traditional\startup\c018i.c
00005c   50f5     MOVF      0xf5,0x0,0x0   	movf TABLAT, 0, 0                                                               C:\mcc18\src\traditional\startup\c018i.c
00005e   6f82     MOVWF     0x82,0x1       	movwf prom+2, 1                                                                 C:\mcc18\src\traditional\startup\c018i.c
                                           	/* skip a byte since it's stored as a 32bit int */                              C:\mcc18\src\traditional\startup\c018i.c
000060   0009     TBLRDPOSTINC             	tblrdpostinc                                                                    C:\mcc18\src\traditional\startup\c018i.c
                                           	/* read the destination address directly into FSR0 */                           C:\mcc18\src\traditional\startup\c018i.c
000062   0009     TBLRDPOSTINC             	tblrdpostinc                                                                    C:\mcc18\src\traditional\startup\c018i.c
000064   50f5     MOVF      0xf5,0x0,0x0   	movf TABLAT, 0, 0                                                               C:\mcc18\src\traditional\startup\c018i.c
000066   6ee9     MOVWF     0xe9,0x0       	movwf FSR0L, 0                                                                  C:\mcc18\src\traditional\startup\c018i.c
000068   0009     TBLRDPOSTINC             	tblrdpostinc                                                                    C:\mcc18\src\traditional\startup\c018i.c
00006a   50f5     MOVF      0xf5,0x0,0x0   	movf TABLAT, 0, 0                                                               C:\mcc18\src\traditional\startup\c018i.c
00006c   6eea     MOVWF     0xea,0x0       	movwf FSR0H, 0                                                                  C:\mcc18\src\traditional\startup\c018i.c
                                           	/* skip two bytes since it's stored as a 32bit int */                           C:\mcc18\src\traditional\startup\c018i.c
00006e   0009     TBLRDPOSTINC             	tblrdpostinc                                                                    C:\mcc18\src\traditional\startup\c018i.c
000070   0009     TBLRDPOSTINC             	tblrdpostinc                                                                    C:\mcc18\src\traditional\startup\c018i.c
                                           	/* read the destination address directly into FSR0 */                           C:\mcc18\src\traditional\startup\c018i.c
000072   0009     TBLRDPOSTINC             	tblrdpostinc                                                                    C:\mcc18\src\traditional\startup\c018i.c
000074   50f5     MOVF      0xf5,0x0,0x0   	movf TABLAT, 0, 0                                                               C:\mcc18\src\traditional\startup\c018i.c
000076   6f83     MOVWF     0x83,0x1       	movwf curr_byte, 1                                                              C:\mcc18\src\traditional\startup\c018i.c
000078   0009     TBLRDPOSTINC             	tblrdpostinc                                                                    C:\mcc18\src\traditional\startup\c018i.c
00007a   50f5     MOVF      0xf5,0x0,0x0   	movf TABLAT, 0, 0                                                               C:\mcc18\src\traditional\startup\c018i.c
00007c   6f84     MOVWF     0x84,0x1       	movwf curr_byte+1, 1                                                            C:\mcc18\src\traditional\startup\c018i.c
                                           	/* skip two bytes since it's stored as a 32bit int */                           C:\mcc18\src\traditional\startup\c018i.c
00007e   0009     TBLRDPOSTINC             	tblrdpostinc                                                                    C:\mcc18\src\traditional\startup\c018i.c
000080   0009     TBLRDPOSTINC             	tblrdpostinc                                                                    C:\mcc18\src\traditional\startup\c018i.c
                                                 _endasm                                                                    C:\mcc18\src\traditional\startup\c018i.c
                                                 //prom = data_ptr->from;                                                   C:\mcc18\src\traditional\startup\c018i.c
                                                 //FSR0 = data_ptr->to;                                                     C:\mcc18\src\traditional\startup\c018i.c
                                                 //curr_byte = (unsigned short) data_ptr->size;                             C:\mcc18\src\traditional\startup\c018i.c
                                                 /* the table pointer now points to the next entry. Save it                 C:\mcc18\src\traditional\startup\c018i.c
                                                  * off since we'll be using the table pointer to do the copying            C:\mcc18\src\traditional\startup\c018i.c
                                                  * for the entry.                                                          C:\mcc18\src\traditional\startup\c018i.c
                                                  */                                                                        C:\mcc18\src\traditional\startup\c018i.c
000082   cff6     MOVFF     0xff6,0x87           data_ptr = TBLPTR;                                                         C:\mcc18\src\traditional\startup\c018i.c
000084   f087                                                                                                               
000086   cff7     MOVFF     0xff7,0x88                                                                                      
000088   f088                                                                                                               
00008a   cff8     MOVFF     0xff8,0x89                                                                                      
00008c   f089                                                                                                               
                                                                                                                            C:\mcc18\src\traditional\startup\c018i.c
                                                 /* now assign the source address to the table pointer */                   C:\mcc18\src\traditional\startup\c018i.c

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