1 /*-------------------------------------------------------------------------
3 device.c - Accomodates subtle variations in PIC16 devices
4 Written By - Scott Dattalo scott@dattalo.com
5 Ported to PIC16 By - Martin Dubuc m.dubuc@rogers.com
7 This program is free software; you can redistribute it and/or modify it
8 under the terms of the GNU General Public License as published by the
9 Free Software Foundation; either version 2, or (at your option) any
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20 -------------------------------------------------------------------------*/
24 #include "common.h" // Include everything in the SDCC src directory
32 #if defined(__BORLANDC__) || defined(_MSC_VER)
33 #define STRCASECMP stricmp
35 #define STRCASECMP strcasecmp
38 static PIC_device Pics[] = {
40 {"p18f242", "18f242", "pic18f242", "f242"},
48 {"p18f252", "18f252", "pic18f252", "f252"},
56 {"p18f442", "18f442", "pic18f442", "f442"},
64 {"p18f452", "18f452", "pic18f452", "f452"},
73 static int num_of_supported_PICS = sizeof(Pics)/sizeof(PIC_device);
75 #define DEFAULT_PIC "f452"
77 static PIC_device *pic=NULL;
79 AssignedMemory *pic16_finalMapping=NULL;
80 int pic16_finalMappingSize=0;
82 #define DEFAULT_CONFIG_BYTE 0xff
84 #define CONFIG1H_WORD_ADDRESS 0x300001
85 #define DEFAULT_CONFIG1H_WORD DEFAULT_CONFIG_BYTE
87 #define CONFIG2L_WORD_ADDRESS 0x300002
88 #define DEFAULT_CONFIG2L_WORD DEFAULT_CONFIG_BYTE
90 #define CONFIG2H_WORD_ADDRESS 0x300003
91 #define DEFAULT_CONFIG2H_WORD DEFAULT_CONFIG_BYTE
93 #define CONFIG3H_WORD_ADDRESS 0x300005
94 #define DEFAULT_CONFIG3H_WORD DEFAULT_CONFIG_BYTE
96 #define CONFIG4L_WORD_ADDRESS 0x300006
97 #define DEFAULT_CONFIG4L_WORD DEFAULT_CONFIG_BYTE
99 #define CONFIG5L_WORD_ADDRESS 0x300008
100 #define DEFAULT_CONFIG5L_WORD DEFAULT_CONFIG_BYTE
102 #define CONFIG5H_WORD_ADDRESS 0x300009
103 #define DEFAULT_CONFIG5H_WORD DEFAULT_CONFIG_BYTE
105 #define CONFIG6L_WORD_ADDRESS 0x30000a
106 #define DEFAULT_CONFIG6L_WORD DEFAULT_CONFIG_BYTE
108 #define CONFIG6H_WORD_ADDRESS 0x30000b
109 #define DEFAULT_CONFIG6H_WORD DEFAULT_CONFIG_BYTE
111 #define CONFIG7L_WORD_ADDRESS 0x30000c
112 #define DEFAULT_CONFIG7L_WORD DEFAULT_CONFIG_BYTE
114 #define CONFIG7H_WORD_ADDRESS 0x30000d
115 #define DEFAULT_CONFIG7H_WORD DEFAULT_CONFIG_BYTE
117 static unsigned int config1h_word = DEFAULT_CONFIG1H_WORD;
118 static unsigned int config2l_word = DEFAULT_CONFIG2L_WORD;
119 static unsigned int config2h_word = DEFAULT_CONFIG2H_WORD;
120 static unsigned int config3h_word = DEFAULT_CONFIG3H_WORD;
121 static unsigned int config4l_word = DEFAULT_CONFIG4L_WORD;
122 static unsigned int config5l_word = DEFAULT_CONFIG5L_WORD;
123 static unsigned int config5h_word = DEFAULT_CONFIG5H_WORD;
124 static unsigned int config6l_word = DEFAULT_CONFIG6L_WORD;
125 static unsigned int config6h_word = DEFAULT_CONFIG6H_WORD;
126 static unsigned int config7l_word = DEFAULT_CONFIG7L_WORD;
127 static unsigned int config7h_word = DEFAULT_CONFIG7H_WORD;
129 void pic16_addMemRange(memRange *r, int type)
132 int alias = r->alias;
134 if (pic->maxRAMaddress < 0) {
135 fprintf(stderr, "missing \"#pragma maxram\" setting\n");
140 for (i=r->start_address; i<= r->end_address; i++) {
141 if ((i|alias) <= pic->maxRAMaddress) {
142 pic16_finalMapping[i | alias].isValid = 1;
143 pic16_finalMapping[i | alias].alias = r->alias;
144 pic16_finalMapping[i | alias].bank = r->bank;
147 pic16_finalMapping[i | alias].isSFR = 1;
149 pic16_finalMapping[i | alias].isSFR = 0;
152 fprintf(stderr, "WARNING: %s:%s memory at 0x%x is beyond max ram = 0x%x\n",
153 __FILE__,__FUNCTION__,(i|alias), pic->maxRAMaddress);
157 /* Decrement alias */
159 alias -= ((alias & (alias - 1)) ^ alias);
164 } while (alias >= 0);
167 void pic16_setMaxRAM(int size)
170 pic->maxRAMaddress = size;
172 if (pic->maxRAMaddress < 0) {
173 fprintf(stderr, "invalid \"#pragma maxram 0x%x\" setting\n",
178 pic16_finalMapping = Safe_calloc(1+pic->maxRAMaddress,
179 sizeof(AssignedMemory));
181 /* Now initialize the pic16_finalMapping array */
183 for(i=0; i<=pic->maxRAMaddress; i++) {
184 pic16_finalMapping[i].reg = NULL;
185 pic16_finalMapping[i].isValid = 0;
189 /*-----------------------------------------------------------------*
190 *-----------------------------------------------------------------*/
192 int pic16_isREGinBank(regs *reg, int bank)
198 if(pic16_finalMapping[reg->address].bank == bank)
204 /*-----------------------------------------------------------------*
205 *-----------------------------------------------------------------*/
206 int pic16_REGallBanks(regs *reg)
212 if (reg->address > pic->maxRAMaddress)
219 /*-----------------------------------------------------------------*
220 *-----------------------------------------------------------------*/
223 * pic16_dump_map -- debug stuff
226 void pic16_dump_map(void)
230 for(i=0; i<=pic->maxRAMaddress; i++) {
231 //fprintf(stdout , "addr 0x%02x is %s\n", i, ((pic16_finalMapping[i].isValid) ? "valid":"invalid"));
233 if(pic16_finalMapping[i].isValid) {
234 fprintf(stderr,"addr: 0x%02x",i);
235 if(pic16_finalMapping[i].isSFR)
236 fprintf(stderr," isSFR");
237 if(pic16_finalMapping[i].reg)
238 fprintf( stderr, " reg %s", pic16_finalMapping[i].reg->name);
239 fprintf(stderr, "\n");
245 void pic16_dump_cblock(FILE *of)
251 //pic16_dump_map(); /* display the register map */
253 if (pic->maxRAMaddress < 0) {
254 fprintf(stderr, "missing \"#pragma maxram\" setting\n");
260 if(pic16_finalMapping[addr].reg && !pic16_finalMapping[addr].reg->isEmitted) {
267 /* clear the lower 7-bits of the start address of the first
268 * variable declared in this bank. The upper bits for the mid
269 * range pics are the bank select bits.
272 bank_base = start & 0xfff8;
274 /* The bank number printed in the cblock comment tacitly
275 * assumes that the first register in the contiguous group
276 * of registers represents the bank for the whole group */
278 if ((pic16_finalMapping[start].bank == 0 && start <= 0x7f) ||
279 pic16_finalMapping[start].isSFR)
280 fprintf(of," cblock 0X%04X\t; Access Bank\n",start);
282 fprintf(of," cblock 0X%04X\t; Bank %d\n",start,pic16_finalMapping[start].bank);
284 for( ; start < addr; start++) {
285 if((pic16_finalMapping[start].reg) && !pic16_finalMapping[start].reg->isEmitted ) {
286 fprintf(of,"\t%s",pic16_finalMapping[start].reg->name);
288 /* If this register is aliased in multiple banks, then
289 * mangle the variable name with the alias address: */
290 if(pic16_finalMapping[start].alias & start)
291 fprintf(of,"_%x",bank_base);
293 if(pic16_finalMapping[start].instance)
294 fprintf(of,"_%d",pic16_finalMapping[start].instance);
299 //#warning why is the following line commented out?! (VR)
300 // pic16_finalMapping[start].reg->isEmitted = 1;
304 fprintf(of," endc\n");
313 } while(addr <= pic->maxRAMaddress);
318 /*-----------------------------------------------------------------*
319 * void pic16_list_valid_pics(int ncols, int list_alias)
321 * Print out a formatted list of valid PIC devices
323 * ncols - number of columns in the list.
325 * list_alias - if non-zero, print all of the supported aliases
326 * for a device (e.g. F84, 16F84, etc...)
327 *-----------------------------------------------------------------*/
328 void pic16_list_valid_pics(int ncols, int list_alias)
334 list_alias = sizeof(Pics[0].name) / sizeof(Pics[0].name[0]);
336 /* decrement the column number if it's greater than zero */
337 ncols = (ncols > 1) ? ncols-1 : 4;
339 /* Find the device with the longest name */
340 for(i=0,longest=0; i<num_of_supported_PICS; i++) {
341 for(j=0; j<=list_alias; j++) {
342 k = strlen(Pics[i].name[j]);
350 for(i=0; i < num_of_supported_PICS; i++) {
354 fprintf(stderr,"%s", Pics[i].name[j]);
356 l = longest + 2 - strlen(Pics[i].name[j]);
367 } while(++j<list_alias);
375 /*-----------------------------------------------------------------*
377 *-----------------------------------------------------------------*/
378 PIC_device *pic16_find_device(char *name)
386 for(i = 0; i<num_of_supported_PICS; i++) {
388 for(j=0; j<PROCESSOR_NAMES; j++)
389 if(!STRCASECMP(Pics[i].name[j], name) )
397 /*-----------------------------------------------------------------*
399 *-----------------------------------------------------------------*/
400 void pic16_init_pic(char *pic_type)
402 pic = pic16_find_device(pic_type);
406 fprintf(stderr, "'%s' was not found.\n", pic_type);
408 fprintf(stderr, "No processor has been specified (use -pPROCESSOR_NAME)\n");
410 fprintf(stderr,"Valid devices are:\n");
412 pic16_list_valid_pics(4,0);
416 pic->maxRAMaddress = -1;
419 /*-----------------------------------------------------------------*
421 *-----------------------------------------------------------------*/
422 int pic16_picIsInitialized(void)
424 if(pic && pic->maxRAMaddress > 0)
431 /*-----------------------------------------------------------------*
432 * char *pic16_processor_base_name(void) - Include file is derived from this.
433 *-----------------------------------------------------------------*/
434 char *pic16_processor_base_name(void)
443 static int isSFR(int address)
446 if( (address > pic->maxRAMaddress) || !pic16_finalMapping[address].isSFR)
453 /*-----------------------------------------------------------------*
454 *-----------------------------------------------------------------*/
455 static int validAddress(int address, int reg_size)
459 if (pic->maxRAMaddress < 0) {
460 fprintf(stderr, "missing \"#pragma maxram\" setting\n");
463 // fprintf(stderr, "validAddress: Checking 0x%04x (max=0x%04x) (reg_size = %d)\n",address, pic->maxRAMaddress, reg_size);
464 if(address > pic->maxRAMaddress)
467 for (i=0; i<reg_size; i++)
468 if(!pic16_finalMapping[address + i].isValid ||
469 pic16_finalMapping[address+i].reg ||
470 pic16_finalMapping[address+i].isSFR )
476 /*-----------------------------------------------------------------*
477 *-----------------------------------------------------------------*/
478 static void mapRegister(regs *reg)
484 if(!reg || !reg->size) {
485 fprintf(stderr,"WARNING: %s:%s:%d Bad register\n",__FILE__,__FUNCTION__,__LINE__);
489 if (pic->maxRAMaddress < 0) {
490 fprintf(stderr, "missing \"#pragma maxram\" setting\n");
494 for(i=0; i<reg->size; i++) {
496 alias = pic16_finalMapping[reg->address].alias;
501 // fprintf(stdout,"mapping %s to address 0x%02x, reg size = %d\n",reg->name, (reg->address+alias+i),reg->size);
503 pic16_finalMapping[reg->address + alias + i].reg = reg;
504 pic16_finalMapping[reg->address + alias + i].instance = i;
506 /* Decrement alias */
508 alias -= ((alias & (alias - 1)) ^ alias);
515 // fprintf(stderr,"%s - %s addr = 0x%03x, size %d\n",__FUNCTION__,reg->name, reg->address,reg->size);
521 /*-----------------------------------------------------------------*
522 *-----------------------------------------------------------------*/
523 static int assignRegister(regs *reg, int start_address)
527 //fprintf(stderr,"%s - %s start_address = 0x%03x\n",__FUNCTION__,reg->name, start_address);
530 if (validAddress(reg->address,reg->size)) {
531 //fprintf(stderr,"%s - %s address = 0x%03x\n",__FUNCTION__,reg->name, reg->address);
536 if( isSFR(reg->address)) {
541 //fprintf(stderr, "WARNING: Ignoring Out of Range register assignment at fixed address %d, %s\n",
542 // reg->address, reg->name);
546 /* This register does not have a fixed address requirement
547 * so we'll search through all availble ram address and
548 * assign the first one */
550 for (i=start_address; i<=pic->maxRAMaddress; i++) {
552 if (validAddress(i,reg->size)) {
553 // fprintf(stderr, "found valid address = 0x%04x\n", i);
560 fprintf(stderr, "WARNING: No more RAM available for %s\n",reg->name);
567 /*-----------------------------------------------------------------*
568 *-----------------------------------------------------------------*/
569 void pic16_assignFixedRegisters(set *regset)
573 for (reg = setFirstItem(regset) ; reg ;
574 reg = setNextItem(regset)) {
577 assignRegister(reg,0);
582 /*-----------------------------------------------------------------*
583 *-----------------------------------------------------------------*/
584 void pic16_assignRelocatableRegisters(set *regset, int used)
590 for (reg = setFirstItem(regset) ; reg ;
591 reg = setNextItem(regset)) {
593 //fprintf(stdout,"assigning %s isFixed=%d, wasUsed=%d\n",reg->name,reg->isFixed,reg->wasUsed);
595 if((!reg->isFixed) && (used || reg->wasUsed))
596 address = assignRegister(reg,address);
603 /*-----------------------------------------------------------------*
604 * void pic16_assignConfigWordValue(int address, int value)
606 * All high performance RISC CPU PICs have seven config word starting
607 * at address 0x300000.
608 * This routine will assign a value to that address.
610 *-----------------------------------------------------------------*/
612 void pic16_assignConfigWordValue(int address, int value)
615 case CONFIG1H_WORD_ADDRESS:
616 config1h_word = value;
618 case CONFIG2L_WORD_ADDRESS:
619 config2l_word = value;
621 case CONFIG2H_WORD_ADDRESS:
622 config2h_word = value;
624 case CONFIG3H_WORD_ADDRESS:
625 config3h_word = value;
627 case CONFIG4L_WORD_ADDRESS:
628 config4l_word = value;
630 case CONFIG5L_WORD_ADDRESS:
631 config5l_word = value;
633 case CONFIG5H_WORD_ADDRESS:
634 config5h_word = value;
636 case CONFIG6L_WORD_ADDRESS:
637 config6l_word = value;
639 case CONFIG6H_WORD_ADDRESS:
640 config6h_word = value;
642 case CONFIG7L_WORD_ADDRESS:
643 config7l_word = value;
645 case CONFIG7H_WORD_ADDRESS:
646 config7h_word = value;
650 //fprintf(stderr,"setting config word to 0x%x\n",value);
653 /*-----------------------------------------------------------------*
654 * int pic16_getConfigWord(int address)
656 * Get the current value of the config word.
658 *-----------------------------------------------------------------*/
660 int pic16_getConfigWord(int address)
663 case CONFIG1H_WORD_ADDRESS:
664 return config1h_word;
665 case CONFIG2L_WORD_ADDRESS:
666 return config2l_word;
667 case CONFIG2H_WORD_ADDRESS:
668 return config2h_word;
669 case CONFIG3H_WORD_ADDRESS:
670 return config3h_word;
671 case CONFIG4L_WORD_ADDRESS:
672 return config4l_word;
673 case CONFIG5L_WORD_ADDRESS:
674 return config5l_word;
675 case CONFIG5H_WORD_ADDRESS:
676 return config5h_word;
677 case CONFIG6L_WORD_ADDRESS:
678 return config6l_word;
679 case CONFIG6H_WORD_ADDRESS:
680 return config6h_word;
681 case CONFIG7L_WORD_ADDRESS:
682 return config7l_word;
683 case CONFIG7H_WORD_ADDRESS:
684 return config7h_word;