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 -------------------------------------------------------------------------*/
23 #include "common.h" // Include everything in the SDCC src directory
31 #if defined(__BORLANDC__) || defined(_MSC_VER)
32 #define STRCASECMP stricmp
34 #define STRCASECMP strcasecmp
37 static PIC_device Pics[] = {
39 {"p16f627", "16f627", "pic16f627", "f627"}, /* processor name */
42 0, /* max ram address (calculated) */
47 {"p16f628", "16f628", "pic16f628", "f628"},
55 {"p16f84", "16f84", "pic16f84", "f84"},
63 {"p16f873", "16f873", "pic16f873", "f873"},
71 {"p16f877", "16f877", "pic16f877", "f877"},
80 static int num_of_supported_PICS = sizeof(Pics)/sizeof(PIC_device);
82 #define DEFAULT_PIC "f877"
84 static PIC_device *pic=NULL;
86 AssignedMemory *finalMapping=NULL;
88 #define CONFIG_WORD_ADDRESS 0x2007
89 #define DEFAULT_CONFIG_WORD 0x3fff
91 static unsigned int config_word = DEFAULT_CONFIG_WORD;
93 void addMemRange(memRange *r, int type)
98 if (pic->maxRAMaddress < 0) {
99 fprintf(stderr, "missing \"#pragma maxram\" setting\n");
104 for (i=r->start_address; i<= r->end_address; i++) {
105 if (i <= pic->maxRAMaddress) {
106 finalMapping[i | alias].isValid = 1;
107 finalMapping[i | alias].alias = r->alias;
108 finalMapping[i | alias].bank = r->bank;
111 finalMapping[i | alias].isSFR = 1;
113 finalMapping[i | alias].isSFR = 0;
118 /* Decrement alias */
120 alias -= ((alias & (alias - 1)) ^ alias);
125 } while (alias >= 0);
128 void setMaxRAM(int size)
131 pic->maxRAMaddress = size;
133 if (pic->maxRAMaddress < 0) {
134 fprintf(stderr, "invalid \"#pragma maxram 0x%x\" setting\n",
139 finalMapping = Safe_calloc(1+pic->maxRAMaddress,
140 sizeof(AssignedMemory));
142 /* Now initialize the finalMapping array */
144 for(i=0; i<=pic->maxRAMaddress; i++) {
145 finalMapping[i].reg = NULL;
146 finalMapping[i].isValid = 0;
150 /*-----------------------------------------------------------------*
151 *-----------------------------------------------------------------*/
153 int isREGinBank(regs *reg, int bank)
159 if(((reg->address | reg->alias) & pic->bankMask & bank) == bank)
165 /*-----------------------------------------------------------------*
166 *-----------------------------------------------------------------*/
167 int REGallBanks(regs *reg)
173 return ((reg->address | reg->alias) & pic->bankMask);
177 /*-----------------------------------------------------------------*
178 *-----------------------------------------------------------------*/
181 * dump_map -- debug stuff
188 for(i=0; i<=pic->maxRAMaddress; i++) {
189 //fprintf(stdout , "addr 0x%02x is %s\n", i, ((finalMapping[i].isValid) ? "valid":"invalid"));
191 if(finalMapping[i].isValid) {
192 fprintf(stderr,"addr: 0x%02x",i);
193 if(finalMapping[i].isSFR)
194 fprintf(stderr," isSFR");
195 if(finalMapping[i].reg)
196 fprintf( stderr, " reg %s", finalMapping[i].reg->name);
197 fprintf(stderr, "\n");
203 void dump_cblock(FILE *of)
209 //dump_map(); /* display the register map */
211 if (pic->maxRAMaddress < 0) {
212 fprintf(stderr, "missing \"#pragma maxram\" setting\n");
218 if(finalMapping[addr].reg && !finalMapping[addr].reg->isEmitted) {
225 /* clear the lower 7-bits of the start address of the first
226 * variable declared in this bank. The upper bits for the mid
227 * range pics are the bank select bits.
230 bank_base = start & 0xfff8;
232 /* The bank number printed in the cblock comment tacitly
233 * assumes that the first register in the contiguous group
234 * of registers represents the bank for the whole group */
236 fprintf(of," cblock 0X%04X\t; Bank %d\n",start,finalMapping[start].bank);
238 for( ; start < addr; start++) {
239 if((finalMapping[start].reg) && !finalMapping[start].reg->isEmitted ) {
240 fprintf(of,"\t%s",finalMapping[start].reg->name);
242 /* If this register is aliased in multiple banks, then
243 * mangle the variable name with the alias address: */
244 if(finalMapping[start].alias & start)
245 fprintf(of,"_%x",bank_base);
247 if(finalMapping[start].instance)
248 fprintf(of,"_%d",finalMapping[start].instance);
253 //finalMapping[start].reg->isEmitted = 1;
257 fprintf(of," endc\n");
266 } while(addr <= pic->maxRAMaddress);
271 /*-----------------------------------------------------------------*
272 * void list_valid_pics(int ncols, int list_alias)
274 * Print out a formatted list of valid PIC devices
276 * ncols - number of columns in the list.
278 * list_alias - if non-zero, print all of the supported aliases
279 * for a device (e.g. F84, 16F84, etc...)
280 *-----------------------------------------------------------------*/
281 void list_valid_pics(int ncols, int list_alias)
287 list_alias = sizeof(Pics[0].name) / sizeof(Pics[0].name[0]);
289 /* decrement the column number if it's greater than zero */
290 ncols = (ncols > 1) ? ncols-1 : 4;
292 /* Find the device with the longest name */
293 for(i=0,longest=0; i<num_of_supported_PICS; i++) {
294 for(j=0; j<=list_alias; j++) {
295 k = strlen(Pics[i].name[j]);
303 for(i=0; i < num_of_supported_PICS; i++) {
307 fprintf(stderr,"%s", Pics[i].name[j]);
309 l = longest + 2 - strlen(Pics[i].name[j]);
320 } while(++j<list_alias);
328 /*-----------------------------------------------------------------*
330 *-----------------------------------------------------------------*/
331 PIC_device *find_device(char *name)
339 for(i = 0; i<num_of_supported_PICS; i++) {
341 for(j=0; j<PROCESSOR_NAMES; j++)
342 if(!STRCASECMP(Pics[i].name[j], name) )
350 /*-----------------------------------------------------------------*
352 *-----------------------------------------------------------------*/
353 void init_pic(char *pic_type)
355 pic = find_device(pic_type);
359 fprintf(stderr, "'%s' was not found.\n", pic_type);
361 fprintf(stderr, "No processor has been specified (use -pPROCESSOR_NAME)\n");
363 fprintf(stderr,"Valid devices are:\n");
365 list_valid_pics(4,0);
369 pic->maxRAMaddress = -1;
372 /*-----------------------------------------------------------------*
373 * char *processor_base_name(void) - Include file is derived from this.
374 *-----------------------------------------------------------------*/
375 char *processor_base_name(void)
384 int isSFR(int address)
387 if( (address > pic->maxRAMaddress) || !finalMapping[address].isSFR)
394 int validAddress(int address, int reg_size)
398 if (pic->maxRAMaddress < 0) {
399 fprintf(stderr, "missing \"#pragma maxram\" setting\n");
403 if(address > pic->maxRAMaddress)
406 for (i=0; i<reg_size; i++)
407 if(!finalMapping[address + i].isValid ||
408 finalMapping[address+i].reg ||
409 finalMapping[address+i].isSFR )
415 void mapRegister(regs *reg)
421 if(!reg || !reg->size) {
422 fprintf(stderr,"WARNING: %s:%s:%d Bad register\n",__FILE__,__FUNCTION__,__LINE__);
426 if (pic->maxRAMaddress < 0) {
427 fprintf(stderr, "missing \"#pragma maxram\" setting\n");
431 for(i=0; i<reg->size; i++) {
433 alias = finalMapping[reg->address].alias;
438 //fprintf(stdout,"mapping %s to address 0x%02x, reg size = %d\n",reg->name, (reg->address+alias+i),reg->size);
440 finalMapping[reg->address + alias + i].reg = reg;
441 finalMapping[reg->address + alias + i].instance = i;
443 /* Decrement alias */
445 alias -= ((alias & (alias - 1)) ^ alias);
452 // fprintf(stderr,"%s - %s addr = 0x%03x, size %d\n",__FUNCTION__,reg->name, reg->address,reg->size);
458 int assignRegister(regs *reg, int start_address)
462 //fprintf(stderr,"%s - %s start_address = 0x%03x\n",__FUNCTION__,reg->name, start_address);
465 if (validAddress(reg->address,reg->size)) {
466 fprintf(stderr,"%s - %s address = 0x%03x\n",__FUNCTION__,reg->name, reg->address);
471 if( isSFR(reg->address)) {
475 fprintf(stderr, "WARNING: Ignoring Out of Range register assignment at fixed address %d, %s\n",
476 reg->address, reg->name);
480 /* This register does not have a fixed address requirement
481 * so we'll search through all availble ram address and
482 * assign the first one */
484 for (i=start_address; i<=pic->maxRAMaddress; i++) {
486 if (validAddress(i,reg->size)) {
493 fprintf(stderr, "WARNING: No more RAM available\n");
500 void assignFixedRegisters(set *regset)
504 for (reg = setFirstItem(regset) ; reg ;
505 reg = setNextItem(regset)) {
508 assignRegister(reg,0);
513 void assignRelocatableRegisters(set *regset, int used)
519 for (reg = setFirstItem(regset) ; reg ;
520 reg = setNextItem(regset)) {
522 //fprintf(stdout,"assigning %s isFixed=%d, wasUsed=%d\n",reg->name,reg->isFixed,reg->wasUsed);
524 if((!reg->isFixed) && ( used || reg->wasUsed))
525 address = assignRegister(reg,address);
532 /*-----------------------------------------------------------------*
533 * void assignConfigWordValue(int address, int value)
535 * All midrange PICs have one config word at address 0x2007.
536 * This routine will assign a value to that address.
538 *-----------------------------------------------------------------*/
540 void assignConfigWordValue(int address, int value)
542 if(CONFIG_WORD_ADDRESS == address)
545 //fprintf(stderr,"setting config word to 0x%x\n",value);
548 /*-----------------------------------------------------------------*
549 * int getConfigWord(int address)
551 * Get the current value of the config word.
553 *-----------------------------------------------------------------*/
555 int getConfigWord(int address)
557 if(CONFIG_WORD_ADDRESS == address)