1 /*-------------------------------------------------------------------------
3 device.c - Accomodates subtle variations in PIC devices
4 Written By - Scott Dattalo scott@dattalo.com
6 This program is free software; you can redistribute it and/or modify it
7 under the terms of the GNU General Public License as published by the
8 Free Software Foundation; either version 2, or (at your option) any
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19 -------------------------------------------------------------------------*/
25 #include "common.h" // Include everything in the SDCC src directory
34 #if defined(__BORLANDC__) || defined(_MSC_VER)
35 #define STRCASECMP stricmp
36 #define STRNCASECMP strnicmp
38 #define STRCASECMP strcasecmp
39 #define STRNCASECMP strncasecmp
42 extern int Gstack_base_addr;
43 extern int Gstack_size;
45 #define MAX_PICLIST 200
46 static PIC_device *Pics[MAX_PICLIST];
47 static int num_of_supported_PICS = 0;
49 static PIC_device *pic=NULL;
51 int maxRAMaddress = 0;
52 AssignedMemory *finalMapping=NULL;
54 #define CONFIG_WORD_ADDRESS 0x2007
55 #define CONFIG2_WORD_ADDRESS 0x2008
56 #define DEFAULT_CONFIG_WORD 0x3fff
57 #define DEFAULT_CONFIG2_WORD 0x3ffc
59 #define DEVICE_FILE_NAME "pic14devices.txt"
60 #define PIC14_STRING_LEN 256
61 #define SPLIT_WORDS_MAX 16
63 static unsigned int config_word = DEFAULT_CONFIG_WORD;
64 static unsigned int config2_word = DEFAULT_CONFIG2_WORD;
65 static memRange *rangeRAM = NULL;
67 extern void emitSymbolToFile (FILE *of, const char *name, const char *section_type, int size, int addr, int useEQU, int globalize);
70 /* parse a value from the configuration file */
71 static int parse_config_value(char *str)
73 if (str[strlen(str) - 1] == 'K')
74 return atoi(str) * 1024; /* like "1K" */
76 else if (STRNCASECMP(str, "0x", 2) == 0)
77 return strtol(str+2, NULL, 16); /* like "0x400" */
80 return atoi(str); /* like "1024" */
84 /* split a line into words */
85 static int split_words(char result_word[SPLIT_WORDS_MAX][PIC14_STRING_LEN], char *str)
91 while (*pos != '\0' && num_words < SPLIT_WORDS_MAX) {
92 /* remove leading spaces */
93 while (isspace(*pos) || *pos == ',')
96 /* copy everything up until the first space or comma */
97 for (ccount = 0; *pos != '\0' && !isspace(*pos) && *pos != ',' && ccount < PIC14_STRING_LEN-1; ccount++, pos++)
98 result_word[num_words][ccount] = *pos;
99 result_word[num_words][ccount] = '\0';
108 /* remove annoying prefixes from the processor name */
109 static char *sanitise_processor_name(char *name)
111 char *proc_pos = name;
116 if (STRNCASECMP(proc_pos, "pic", 3) == 0)
119 else if (tolower(*proc_pos) == 'p')
126 /* create a structure for a pic processor */
127 static PIC_device *create_pic(char *pic_name, int maxram, int bankmsk, int confsiz, int program, int data, int eeprom, int io)
130 char *simple_pic_name = sanitise_processor_name(pic_name);
132 new_pic = Safe_calloc(1, sizeof(PIC_device));
133 new_pic->name = Safe_calloc(strlen(simple_pic_name)+1, sizeof(char));
134 strcpy(new_pic->name, simple_pic_name);
136 new_pic->defMaxRAMaddrs = maxram;
137 new_pic->bankMask = bankmsk;
138 new_pic->hasSecondConfigReg = confsiz > 1;
140 new_pic->programMemSize = program;
141 new_pic->dataMemSize = data;
142 new_pic->eepromMemSize = eeprom;
143 new_pic->ioPins = io;
145 new_pic->ram = rangeRAM;
147 Pics[num_of_supported_PICS] = new_pic;
148 num_of_supported_PICS++;
154 /* mark some registers as being duplicated across banks */
155 static void register_map(int num_words, char word[SPLIT_WORDS_MAX][PIC14_STRING_LEN])
161 fprintf(stderr, "WARNING: not enough values in %s regmap directive\n", DEVICE_FILE_NAME);
165 r.alias = parse_config_value(word[1]);
167 for (pcount = 2; pcount < num_words; pcount++) {
169 r.start_address = parse_config_value(word[pcount]);
170 r.end_address = parse_config_value(word[pcount]);
171 r.bank = (r.start_address >> 7) & 3;
178 /* define ram areas - may be duplicated across banks */
179 static void ram_map(int num_words, char word[SPLIT_WORDS_MAX][PIC14_STRING_LEN])
184 fprintf(stderr, "WARNING: not enough values in %s memmap directive\n", DEVICE_FILE_NAME);
188 r = Safe_calloc(1, sizeof(memRange));
189 //fprintf (stderr, "%s: %s %s %s\n", __FUNCTION__, word[1], word[2], word[3]);
191 r->start_address = parse_config_value(word[1]);
192 r->end_address = parse_config_value(word[2]);
193 r->alias = parse_config_value(word[3]);
194 r->bank = (r->start_address >> 7) & 3;
198 // add memRange to device entry for future lookup (sharebanks)
203 extern set *includeDirsSet;
204 extern set *userIncDirsSet;
205 extern set *libDirsSet;
206 extern set *libPathsSet;
208 /* read the file with all the pic14 definitions and pick out the definition for a processor
209 * if specified. if pic_name is NULL reads everything */
210 static PIC_device *find_device(char *pic_name)
213 char pic_buf[PIC14_STRING_LEN];
215 int found_processor = FALSE;
217 char processor_name[SPLIT_WORDS_MAX][PIC14_STRING_LEN];
218 int num_processor_names = 0;
226 char *simple_pic_name;
231 /* allow abbreviations of the form "f877" - convert to "16f877" */
232 simple_pic_name = sanitise_processor_name(pic_name);
233 num_of_supported_PICS = 0;
235 /* open the piclist file */
236 /* first scan all include directories */
238 //fprintf( stderr, "%s: searching %s\n", __FUNCTION__, DEVICE_FILE_NAME );
239 for (dir = setFirstItem(includeDirsSet);
241 dir = setNextItem(includeDirsSet))
243 //fprintf( stderr, "searching1 %s\n", dir );
244 SNPRINTF(&filename[0], len, "%s%s%s", dir, DIR_SEPARATOR_STRING, DEVICE_FILE_NAME);
245 pic_file = fopen( filename, "rt" );
248 for (dir = setFirstItem(userIncDirsSet);
250 dir = setNextItem(userIncDirsSet))
252 //fprintf( stderr, "searching2 %s\n", dir );
253 SNPRINTF(&filename[0], len, "%s%s%s", dir, DIR_SEPARATOR_STRING, DEVICE_FILE_NAME);
254 pic_file = fopen( filename, "rt" );
257 for (dir = setFirstItem(libDirsSet);
259 dir = setNextItem(libDirsSet))
261 //fprintf( stderr, "searching3 %s\n", dir );
262 SNPRINTF(&filename[0], len, "%s%s%s", dir, DIR_SEPARATOR_STRING, DEVICE_FILE_NAME);
263 pic_file = fopen( filename, "rt" );
266 for (dir = setFirstItem(libPathsSet);
268 dir = setNextItem(libPathsSet))
270 //fprintf( stderr, "searching4 %s\n", dir );
271 SNPRINTF(&filename[0], len, "%s%s%s", dir, DIR_SEPARATOR_STRING, DEVICE_FILE_NAME);
272 pic_file = fopen( filename, "rt" );
276 pic_file = fopen(DATADIR LIB_DIR_SUFFIX DIR_SEPARATOR_STRING "pic" DIR_SEPARATOR_STRING DEVICE_FILE_NAME, "rt");
278 if (pic_file == NULL) {
279 /* this second attempt is used when initially building the libraries */
280 pic_file = fopen(".." DIR_SEPARATOR_STRING ".." DIR_SEPARATOR_STRING ".." DIR_SEPARATOR_STRING ".."
281 DIR_SEPARATOR_STRING "src" DIR_SEPARATOR_STRING "pic" DIR_SEPARATOR_STRING
282 DEVICE_FILE_NAME, "rt");
283 if (pic_file == NULL) {
284 fprintf(stderr, "can't find %s\n", DATADIR LIB_DIR_SUFFIX DIR_SEPARATOR_STRING "pic"
285 DIR_SEPARATOR_STRING DEVICE_FILE_NAME);
290 /* read line by line */
291 pic_buf[sizeof(pic_buf)-1] = '\0';
292 while (fgets(pic_buf, sizeof(pic_buf)-1, pic_file) != NULL && !done) {
294 /* remove trailing spaces */
295 while (isspace(pic_buf[strlen(pic_buf)-1]))
296 pic_buf[strlen(pic_buf)-1] = '\0';
298 /* remove leading spaces */
299 for (pic_buf_pos = pic_buf; isspace(*pic_buf_pos); pic_buf_pos++)
302 /* ignore comment / empty lines */
303 if (*pic_buf_pos != '\0' && *pic_buf_pos != '#') {
305 /* split into fields */
306 char pic_word[SPLIT_WORDS_MAX][PIC14_STRING_LEN];
310 num_pic_words = split_words(pic_word, pic_buf_pos);
312 if (STRCASECMP(pic_word[0], "processor") == 0) {
314 if (pic_name == NULL) {
315 /* this is the mode where we read all the processors in - store the names for now */
316 if (num_processor_names > 0) {
317 /* store away all the previous processor definitions */
320 for (dcount = 1; dcount < num_processor_names; dcount++)
321 create_pic(processor_name[dcount], pic_maxram, pic_bankmsk,
322 pic_confsiz, pic_program, pic_data, pic_eeprom, pic_io);
325 num_processor_names = split_words(processor_name, pic_buf_pos);
328 /* if we've just completed reading a processor definition stop now */
332 /* check if this processor name is a match */
333 for (wcount = 1; wcount < num_pic_words; wcount++) {
335 /* skip uninteresting prefixes */
336 char *found_name = sanitise_processor_name(pic_word[wcount]);
338 if (STRCASECMP(found_name, simple_pic_name) == 0)
339 found_processor = TRUE;
346 if (found_processor || pic_name == NULL) {
347 /* only parse a processor section if we've found the one we want */
348 if (STRCASECMP(pic_word[0], "maxram") == 0 && num_pic_words > 1) {
349 pic_maxram = parse_config_value(pic_word[1]);
350 setMaxRAM(pic_maxram);
352 else if (STRCASECMP(pic_word[0], "bankmsk") == 0 && num_pic_words > 1)
353 pic_bankmsk = parse_config_value(pic_word[1]);
355 else if (STRCASECMP(pic_word[0], "confsiz") == 0 && num_pic_words > 1)
356 pic_confsiz = parse_config_value(pic_word[1]);
358 else if (STRCASECMP(pic_word[0], "program") == 0 && num_pic_words > 1)
359 pic_program = parse_config_value(pic_word[1]);
361 else if (STRCASECMP(pic_word[0], "data") == 0 && num_pic_words > 1)
362 pic_data = parse_config_value(pic_word[1]);
364 else if (STRCASECMP(pic_word[0], "eeprom") == 0 && num_pic_words > 1)
365 pic_eeprom = parse_config_value(pic_word[1]);
367 else if (STRCASECMP(pic_word[0], "io") == 0 && num_pic_words > 1)
368 pic_io = parse_config_value(pic_word[1]);
370 else if (STRCASECMP(pic_word[0], "regmap") == 0 && num_pic_words > 2) {
372 register_map(num_pic_words, pic_word);
374 else if (STRCASECMP(pic_word[0], "memmap") == 0 && num_pic_words > 2) {
376 ram_map(num_pic_words, pic_word);
379 fprintf(stderr, "WARNING: %s: bad syntax `%s'\n", DEVICE_FILE_NAME, pic_word[0]);
388 /* if we're in read-the-lot mode then create the final processor definition */
389 if (pic_name == NULL) {
391 if (num_processor_names > 0) {
392 /* store away all the previous processor definitions */
395 for (dcount = 1; dcount < num_processor_names; dcount++)
396 create_pic(processor_name[dcount], pic_maxram, pic_bankmsk,
397 pic_confsiz, pic_program, pic_data, pic_eeprom, pic_io);
402 if (found_processor) {
403 /* create a new pic entry */
404 return create_pic(pic_name, pic_maxram, pic_bankmsk,
405 pic_confsiz, pic_program, pic_data, pic_eeprom, pic_io);
412 void addMemRange(memRange *r, int type)
415 int alias = r->alias;
417 //fprintf (stderr, "%s: range %x..%x, alias %x, bank %x\n", __FUNCTION__, r->start_address, r->end_address, r->alias, r->bank);
419 if (maxRAMaddress < 0) {
420 fprintf(stderr, "missing maxram setting in %s\n", DEVICE_FILE_NAME);
425 for (i=r->start_address; i<= r->end_address; i++) {
426 if ((i|alias) <= maxRAMaddress) {
427 /* if we haven't seen this address before, enter it */
428 if (!finalMapping[i | alias].isValid) {
429 finalMapping[i | alias].isValid = 1;
430 finalMapping[i | alias].alias = r->alias;
431 finalMapping[i | alias].bank = r->bank;
434 finalMapping[i | alias].isSFR = 1;
436 finalMapping[i | alias].isSFR = 0;
440 if (getenv("SDCCPICDEBUG")) {
441 fprintf(stderr, "WARNING: %s:%s memory at 0x%x is beyond max ram = 0x%x\n",
442 __FILE__,__FUNCTION__,(i|alias), maxRAMaddress);
447 /* Decrement alias */
449 alias -= ((alias & (alias - 1)) ^ alias);
454 } while (alias >= 0);
457 void setMaxRAM(int size)
460 maxRAMaddress = size;
462 if (maxRAMaddress < 0) {
463 fprintf(stderr, "invalid maxram 0x%x setting in %s\n",
464 maxRAMaddress, DEVICE_FILE_NAME);
468 finalMapping = Safe_calloc(1+maxRAMaddress,
469 sizeof(AssignedMemory));
471 /* Now initialize the finalMapping array */
473 for(i=0; i<=maxRAMaddress; i++) {
474 finalMapping[i].reg = NULL;
475 finalMapping[i].isValid = 0;
476 finalMapping[i].bank = (i>>7);
480 /*-----------------------------------------------------------------*
481 *-----------------------------------------------------------------*/
483 int isREGinBank(regs *reg, int bank)
489 if((int)((reg->address | reg->alias) & pic->bankMask & bank) == bank)
495 /*-----------------------------------------------------------------*
496 *-----------------------------------------------------------------*/
497 int REGallBanks(regs *reg)
503 return ((reg->address | reg->alias) & pic->bankMask);
507 /*-----------------------------------------------------------------*
508 *-----------------------------------------------------------------*/
510 int isSFR(int address)
513 if( (address > maxRAMaddress) || !finalMapping[address].isSFR)
521 * dump_map -- debug stuff
528 for(i=0; i<=maxRAMaddress; i++) {
529 //fprintf(stdout , "addr 0x%02x is %s\n", i, ((finalMapping[i].isValid) ? "valid":"invalid"));
531 if(finalMapping[i].isValid) {
532 fprintf(stderr,"addr: 0x%02x",i);
533 if(finalMapping[i].isSFR)
534 fprintf(stderr," isSFR");
535 if(finalMapping[i].reg)
536 fprintf( stderr, " reg %s", finalMapping[i].reg->name);
537 fprintf(stderr, "\n");
543 void dump_sfr(FILE *of)
548 static int udata_flag=0;
552 //dump_map(); /* display the register map */
553 //fprintf(stdout,";dump_sfr \n");
554 if (maxRAMaddress < 0) {
555 fprintf(stderr, "missing maxram setting in %s\n", DEVICE_FILE_NAME);
559 for (addr = 0; addr <= maxRAMaddress; addr++)
561 regs *reg = finalMapping[addr].reg;
563 if (reg && !reg->isEmitted)
565 emitSymbolToFile (of, reg->name, "udata", reg->size, reg->isFixed ? reg->address : -1, 0, 0);
574 if(finalMapping[addr].reg && !finalMapping[addr].reg->isEmitted) {
581 /* clear the lower 7-bits of the start address of the first
582 * variable declared in this bank. The upper bits for the mid
583 * range pics are the bank select bits.
586 bank_base = start & 0xfff8;
588 /* The bank number printed in the cblock comment tacitly
589 * assumes that the first register in the contiguous group
590 * of registers represents the bank for the whole group */
592 if ( (start != addr) && (!udata_flag) ) {
594 //fprintf(of,"\tudata\n");
597 for( ; start < addr; start++) {
598 if((finalMapping[start].reg) &&
599 (!finalMapping[start].reg->isEmitted) &&
600 (!finalMapping[start].instance) &&
601 (!finalMapping[start].isSFR)) {
603 if (finalMapping[start].reg->isFixed) {
605 for (i=0; i<finalMapping[start].reg->size; i++) {
606 fprintf(of,"%s\tEQU\t0x%04x\n",
607 finalMapping[start].reg->name,
608 finalMapping[start].reg->address+i);
611 emitSymbolToFile (of, finalMapping[start].reg->name, finalMapping[start].reg->size);
613 fprintf(of,"%s\tres\t%i\n",
614 finalMapping[start].reg->name,
615 finalMapping[start].reg->size);
618 finalMapping[start].reg->isEmitted = 1;
629 } while(addr <= maxRAMaddress);
635 /*-----------------------------------------------------------------*
636 * void list_valid_pics(int ncols, int list_alias)
638 * Print out a formatted list of valid PIC devices
640 * ncols - number of columns in the list.
642 * list_alias - if non-zero, print all of the supported aliases
643 * for a device (e.g. F84, 16F84, etc...)
644 *-----------------------------------------------------------------*/
645 void list_valid_pics(int ncols)
650 if (num_of_supported_PICS == 0)
651 find_device(NULL); /* load all the definitions */
653 /* decrement the column number if it's greater than zero */
654 ncols = (ncols > 1) ? ncols-1 : 4;
656 /* Find the device with the longest name */
657 for(i=0,longest=0; i<num_of_supported_PICS; i++) {
658 k = strlen(Pics[i]->name);
665 fprintf(stderr, "\nPIC14 processors and their characteristics:\n\n");
666 fprintf(stderr, " processor");
667 for(k=0; k<longest-1; k++)
669 fprintf(stderr, "program RAM EEPROM I/O\n");
670 fprintf(stderr, "-----------------------------------------------------\n");
672 for(i=0; i < num_of_supported_PICS; i++) {
673 fprintf(stderr," %s", Pics[i]->name);
674 l = longest + 2 - strlen(Pics[i]->name);
678 fprintf(stderr, " ");
679 if (Pics[i]->programMemSize % 1024 == 0)
680 fprintf(stderr, "%4dK", Pics[i]->programMemSize / 1024);
682 fprintf(stderr, "%5d", Pics[i]->programMemSize);
684 fprintf(stderr, " %5d %5d %4d\n",
685 Pics[i]->dataMemSize, Pics[i]->eepromMemSize, Pics[i]->ioPins);
690 fprintf(stderr, "\nPIC14 processors supported:\n");
691 for(i=0; i < num_of_supported_PICS; i++) {
693 fprintf(stderr,"%s", Pics[i]->name);
695 l = longest + 2 - strlen(Pics[i]->name);
712 /*-----------------------------------------------------------------*
714 *-----------------------------------------------------------------*/
715 PIC_device *init_pic(char *pic_type)
717 char long_name[PIC14_STRING_LEN];
719 pic = find_device(pic_type);
722 /* check for shortened "16xxx" form */
723 sprintf(long_name, "16%s", pic_type);
724 pic = find_device(long_name);
726 if(pic_type != NULL && pic_type[0] != '\0')
727 fprintf(stderr, "'%s' was not found.\n", pic_type);
729 fprintf(stderr, "No processor has been specified (use -pPROCESSOR_NAME)\n");
738 /*-----------------------------------------------------------------*
740 *-----------------------------------------------------------------*/
741 int picIsInitialized(void)
743 if(pic && maxRAMaddress > 0)
750 /*-----------------------------------------------------------------*
751 * char *processor_base_name(void) - Include file is derived from this.
752 *-----------------------------------------------------------------*/
753 char *processor_base_name(void)
762 /*-----------------------------------------------------------------*
763 *-----------------------------------------------------------------*/
764 int validAddress(int address, int reg_size)
768 if (maxRAMaddress < 0) {
769 fprintf(stderr, "missing maxram setting in %s\n", DEVICE_FILE_NAME);
772 // fprintf(stderr, "validAddress: Checking 0x%04x\n",address);
773 assert (reg_size > 0);
774 if(address + (reg_size - 1) > maxRAMaddress)
777 for (i=0; i<reg_size; i++)
778 if(!finalMapping[address + i].isValid ||
779 finalMapping[address+i].reg ||
780 finalMapping[address+i].isSFR )
786 /*-----------------------------------------------------------------*
787 *-----------------------------------------------------------------*/
788 void mapRegister(regs *reg)
794 if(!reg || !reg->size) {
795 fprintf(stderr,"WARNING: %s:%s:%d Bad register\n",__FILE__,__FUNCTION__,__LINE__);
799 if (maxRAMaddress < 0) {
800 fprintf(stderr, "missing maxram setting in %s\n", DEVICE_FILE_NAME);
804 for(i=0; i<reg->size; i++) {
806 assert(reg->address >= 0 && reg->address < maxRAMaddress);
808 alias = finalMapping[reg->address].alias;
813 //fprintf(stdout,"mapping %s to address 0x%02x, reg size = %d\n",reg->name, (reg->address+alias+i),reg->size);
815 finalMapping[reg->address + alias + i].reg = reg;
816 finalMapping[reg->address + alias + i].instance = i;
818 /* Decrement alias */
820 alias -= ((alias & (alias - 1)) ^ alias);
827 //fprintf(stderr,"%s - %s addr = 0x%03x, size %d\n",__FUNCTION__,reg->name, reg->address,reg->size);
833 /*-----------------------------------------------------------------*
834 *-----------------------------------------------------------------*/
835 int assignRegister(regs *reg, int start_address)
839 //fprintf(stderr,"%s - %s start_address = 0x%03x\n",__FUNCTION__,reg->name, start_address);
842 if (validAddress(reg->address,reg->size)) {
843 //fprintf(stderr,"%s - %s address = 0x%03x\n",__FUNCTION__,reg->name, reg->address);
848 if( isSFR(reg->address)) {
853 if (getenv("SDCCPICDEBUG")) {
854 fprintf(stderr, "WARNING: Ignoring Out of Range register assignment at fixed address %d, %s\n",
855 reg->address, reg->name);
860 /* This register does not have a fixed address requirement
861 * so we'll search through all availble ram address and
862 * assign the first one */
864 for (i=start_address; i<=maxRAMaddress; i++) {
866 if (validAddress(i,reg->size)) {
873 fprintf(stderr, "WARNING: No more RAM available for %s\n",reg->name);
880 /*-----------------------------------------------------------------*
881 *-----------------------------------------------------------------*/
882 void assignFixedRegisters(set *regset)
886 for (reg = setFirstItem(regset) ; reg ;
887 reg = setNextItem(regset)) {
890 assignRegister(reg,0);
895 /*-----------------------------------------------------------------*
896 *-----------------------------------------------------------------*/
897 void assignRelocatableRegisters(set *regset, int used)
903 for (reg = setFirstItem(regset) ; reg ;
904 reg = setNextItem(regset)) {
906 //fprintf(stdout,"assigning %s (%d) isFixed=%d, wasUsed=%d\n",reg->name,reg->size,reg->isFixed,reg->wasUsed);
908 if((!reg->isExtern) && (!reg->isFixed) && ( used || reg->wasUsed)) {
909 /* If register have been reused then shall not print it a second time. */
912 for (s = regset; s; s = s->next) {
917 if((!r->isFixed) && ( used || r->wasUsed)) {
918 if (r->rIdx == reg->rIdx) {
919 reg->address = r->address;
926 address = assignRegister(reg,address);
932 /* Keep track of whether we found an assignment to the __config words. */
933 static int pic14_hasSetConfigWord = 0;
935 /*-----------------------------------------------------------------*
936 * void assignConfigWordValue(int address, int value)
938 * Most midrange PICs have one config word at address 0x2007.
939 * Newer PIC14s have a second config word at address 0x2008.
940 * This routine will assign values to those addresses.
942 *-----------------------------------------------------------------*/
944 void pic14_assignConfigWordValue(int address, int value)
946 if (CONFIG_WORD_ADDRESS == address)
949 else if (CONFIG2_WORD_ADDRESS == address)
950 config2_word = value;
952 //fprintf(stderr,"setting config word 0x%x to 0x%x\n", address, value);
953 pic14_hasSetConfigWord = 1;
956 /*-----------------------------------------------------------------*
957 * int pic14_emitConfigWord (FILE * vFile)
959 * Emit the __config directives iff we found a previous assignment
960 * to the config word.
961 *-----------------------------------------------------------------*/
962 extern char *iComments2;
963 int pic14_emitConfigWord (FILE * vFile)
965 if (pic14_hasSetConfigWord)
967 fprintf (vFile, "%s", iComments2);
968 fprintf (vFile, "; config word \n");
969 fprintf (vFile, "%s", iComments2);
970 if (pic14_getHasSecondConfigReg())
972 fprintf (vFile, "\t__config _CONFIG1, 0x%x\n", pic14_getConfigWord(0x2007));
973 fprintf (vFile, "\t__config _CONFIG2, 0x%x\n", pic14_getConfigWord(0x2008));
976 fprintf (vFile, "\t__config 0x%x\n", pic14_getConfigWord(0x2007));
983 /*-----------------------------------------------------------------*
984 * int pic14_getConfigWord(int address)
986 * Get the current value of a config word.
988 *-----------------------------------------------------------------*/
990 int pic14_getConfigWord(int address)
994 case CONFIG_WORD_ADDRESS:
997 case CONFIG2_WORD_ADDRESS:
1005 /*-----------------------------------------------------------------*
1007 *-----------------------------------------------------------------*/
1008 unsigned pic14_getMaxRam(void)
1010 return pic->defMaxRAMaddrs;
1014 /*-----------------------------------------------------------------*
1015 * int getHasSecondConfigReg(void) - check if the device has a
1016 * second config register, rather than just one.
1017 *-----------------------------------------------------------------*/
1018 int pic14_getHasSecondConfigReg(void)
1023 return pic->hasSecondConfigReg;
1026 /*-----------------------------------------------------------------*
1027 * True iff the device has memory aliased in every bank.
1028 * If true, low and high will be set to the low and high address
1029 * occupied by the (last) sharebank found.
1030 *-----------------------------------------------------------------*/
1031 int pic14_hasSharebank(int *low, int *high, int *size)
1039 //fprintf (stderr, "%s: region %x..%x, bank %x, alias %x, pic->bankmask %x\n", __FUNCTION__, r->start_address, r->end_address, r->bank, r->alias, pic->bankMask);
1040 if (r->alias == pic->bankMask) {
1041 if (low) *low = r->start_address;
1042 if (high) *high = r->end_address;
1043 if (size) *size = r->end_address - r->start_address + 1;
1049 if (low) *low = 0x0;
1050 if (high) *high = 0x0;
1051 if (size) *size = 0x0;
1052 //fprintf (stderr, "%s: no shared bank found\n", __FUNCTION__);
1057 * True iff the memory region [low, high] is aliased in all banks.
1059 int pic14_isShared(int low, int high)
1067 //fprintf (stderr, "%s: region %x..%x, bank %x, alias %x, pic->bankmask %x\n", __FUNCTION__, r->start_address, r->end_address, r->bank, r->alias, pic->bankMask);
1068 if ((r->alias == pic->bankMask) && (r->start_address <= low) && (r->end_address >= high)) {
1078 * True iff all RAM is aliased in all banks (no BANKSELs required except for
1081 int pic14_allRAMShared(void)
1089 if (r->alias != pic->bankMask) return 0;
1097 * True iff the pseudo stack is a sharebank --> let linker place it.
1098 * [low, high] denotes a size byte long block of (shared or banked)
1099 * memory to be used.
1101 int pic14_getSharedStack(int *low, int *high, int *size)
1106 haveShared = pic14_hasSharebank(&l, &h, &s);
1107 if ((options.stack_loc != 0) || !haveShared)
1109 // sharebank not available or not to be used
1110 s = options.stack_size ? options.stack_size : 0x10;
1111 l = options.stack_loc ? options.stack_loc : 0x20;
1112 h = (options.stack_loc ? options.stack_loc : 0x20) + s - 1;
1114 if (high) *high = h;
1115 if (size) *size = s;
1116 // return 1 iff [low, high] is present in all banks
1117 //fprintf(stderr, "%s: low %x, high %x, size %x, shared %d\n", __FUNCTION__, l, h, s, pic14_isShared(l, h));
1118 return (pic14_isShared(l, h));
1120 // sharebanks available for use by the stack
1121 if (options.stack_size) s = options.stack_size;
1122 else if (!s || s > 16) s = 16; // limit stack to 16 bytes in SHAREBANK
1124 // provide addresses for sharebank
1126 if (high) *high = l + s - 1;
1127 if (size) *size = s;
1128 //fprintf(stderr, "%s: low %x, high %x, size %x, shared 1\n", __FUNCTION__, l, h, s);
1133 PIC_device * pic14_getPIC(void)