X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=src%2Fpic%2Fdevice.c;h=36c0caf0e70a639aae4bf40fece02bf99661c3f4;hb=3062f96ccb55d1d05caf9c8782f4961f87b341ce;hp=d83c48c453af492ef651e03ce2148e39fc0999bc;hpb=08dd337046c6cfa728572976d1a23d3ea5654da6;p=fw%2Fsdcc diff --git a/src/pic/device.c b/src/pic/device.c index d83c48c4..36c0caf0 100644 --- a/src/pic/device.c +++ b/src/pic/device.c @@ -19,143 +19,393 @@ -------------------------------------------------------------------------*/ #include +#include +#include #include "common.h" // Include everything in the SDCC src directory #include "newalloc.h" +#include "main.h" #include "pcode.h" #include "ralloc.h" #include "device.h" -#if defined(__BORLANDC__) || defined(_MSC_VER) -#define STRCASECMP stricmp -#else -#define STRCASECMP strcasecmp -#endif +extern int Gstack_base_addr; +extern int Gstack_size; -static PIC_device Pics[] = { - { - {"p16f627", "16f627", "pic16f627", "f627"}, /* processor name */ - (memRange *)NULL, - (memRange *)NULL, - 0, /* max ram address (calculated) */ - 0x80, /* Bank Mask */ - }, - - { - {"p16f628", "16f628", "pic16f628", "f628"}, - (memRange *)NULL, - (memRange *)NULL, - 0, - 0x80, - }, +#define MAX_PICLIST 200 +static PIC_device *Pics[MAX_PICLIST]; +static int num_of_supported_PICS = 0; + +static PIC_device *pic=NULL; + +int maxRAMaddress = 0; + +#define CONFIG_WORD_ADDRESS 0x2007 +#define CONFIG2_WORD_ADDRESS 0x2008 +#define DEFAULT_CONFIG_WORD 0x3fff +#define DEFAULT_CONFIG2_WORD 0x3ffc + +#define DEVICE_FILE_NAME "pic14devices.txt" +#define PIC14_STRING_LEN 256 +#define SPLIT_WORDS_MAX 16 + +static unsigned int config_word = DEFAULT_CONFIG_WORD; +static unsigned int config2_word = DEFAULT_CONFIG2_WORD; +static memRange *rangeRAM = NULL; + + +/* parse a value from the configuration file */ +static int parse_config_value(char *str) +{ + if (str[strlen(str) - 1] == 'K') + return atoi(str) * 1024; /* like "1K" */ + + else if (STRNCASECMP(str, "0x", 2) == 0) + return strtol(str+2, NULL, 16); /* like "0x400" */ - { - {"p16f84", "16f84", "pic16f84", "f84"}, - (memRange *)NULL, - (memRange *)NULL, - 0, - 0x80, - }, + else + return atoi(str); /* like "1024" */ +} + + +/* split a line into words */ +static int split_words(char result_word[SPLIT_WORDS_MAX][PIC14_STRING_LEN], char *str) +{ + char *pos = str; + int num_words = 0; + int ccount; + + while (*pos != '\0' && num_words < SPLIT_WORDS_MAX) { + /* remove leading spaces */ + while (isspace(*pos) || *pos == ',') + pos++; + + /* copy everything up until the first space or comma */ + for (ccount = 0; *pos != '\0' && !isspace(*pos) && *pos != ',' && ccount < PIC14_STRING_LEN-1; ccount++, pos++) + result_word[num_words][ccount] = *pos; + result_word[num_words][ccount] = '\0'; + + num_words++; + } - { - {"p16f873", "16f873", "pic16f873", "f873"}, - (memRange *)NULL, - (memRange *)NULL, - 0, - 0x180, - }, + return num_words; +} - { - {"p16f877", "16f877", "pic16f877", "f877"}, - (memRange *)NULL, - (memRange *)NULL, - 0, - 0x180, - }, + +/* remove annoying prefixes from the processor name */ +static char *sanitise_processor_name(char *name) +{ + char *proc_pos = name; + + if (name == NULL) + return NULL; - { - {"p16f819", "16f819", "pic16f819", "f819"}, - (memRange *)NULL, - (memRange *)NULL, - 0, - 0x80, - }, + if (STRNCASECMP(proc_pos, "pic", 3) == 0) + proc_pos += 3; -}; + else if (tolower(*proc_pos) == 'p') + proc_pos += 1; + + return proc_pos; +} -static int num_of_supported_PICS = sizeof(Pics)/sizeof(PIC_device); -#define DEFAULT_PIC "f877" +/* create a structure for a pic processor */ +static PIC_device *create_pic(char *pic_name, int maxram, int bankmsk, int confsiz, int program, int data, int eeprom, int io) +{ + PIC_device *new_pic; + char *simple_pic_name = sanitise_processor_name(pic_name); + + new_pic = Safe_calloc(1, sizeof(PIC_device)); + new_pic->name = Safe_calloc(strlen(simple_pic_name)+1, sizeof(char)); + strcpy(new_pic->name, simple_pic_name); + + new_pic->defMaxRAMaddrs = maxram; + new_pic->bankMask = bankmsk; + new_pic->hasSecondConfigReg = confsiz > 1; + + new_pic->programMemSize = program; + new_pic->dataMemSize = data; + new_pic->eepromMemSize = eeprom; + new_pic->ioPins = io; -static PIC_device *pic=NULL; + new_pic->ram = rangeRAM; + + Pics[num_of_supported_PICS] = new_pic; + num_of_supported_PICS++; + + return new_pic; +} -AssignedMemory *finalMapping=NULL; -#define CONFIG_WORD_ADDRESS 0x2007 -#define DEFAULT_CONFIG_WORD 0x3fff +/* mark some registers as being duplicated across banks */ +static void register_map(int num_words, char word[SPLIT_WORDS_MAX][PIC14_STRING_LEN]) +{ + memRange *r; + int pcount; + + if (num_words < 3) { + fprintf(stderr, "WARNING: not enough values in %s regmap directive\n", DEVICE_FILE_NAME); + return; + } -static unsigned int config_word = DEFAULT_CONFIG_WORD; + for (pcount = 2; pcount < num_words; pcount++) { + r = Safe_calloc(1, sizeof(memRange)); + + r->start_address = parse_config_value(word[pcount]); + r->end_address = parse_config_value(word[pcount]); + r->alias = parse_config_value(word[1]); + r->bank = (r->start_address >> 7) & 3; + // add memRange to device entry for future lookup (sharebanks) + r->next = rangeRAM; + rangeRAM = r; + } +} -void addMemRange(memRange *r, int type) + +/* define ram areas - may be duplicated across banks */ +static void ram_map(int num_words, char word[SPLIT_WORDS_MAX][PIC14_STRING_LEN]) { - int i; - int alias = r->alias; + memRange *r; - if (pic->maxRAMaddress < 0) { - fprintf(stderr, "missing \"#pragma maxram\" setting\n"); + if (num_words < 4) { + fprintf(stderr, "WARNING: not enough values in %s memmap directive\n", DEVICE_FILE_NAME); return; } + + r = Safe_calloc(1, sizeof(memRange)); + //fprintf (stderr, "%s: %s %s %s\n", __FUNCTION__, word[1], word[2], word[3]); + + r->start_address = parse_config_value(word[1]); + r->end_address = parse_config_value(word[2]); + r->alias = parse_config_value(word[3]); + r->bank = (r->start_address >> 7) & 3; + + // add memRange to device entry for future lookup (sharebanks) + r->next = rangeRAM; + rangeRAM = r; +} + +extern set *includeDirsSet; +extern set *userIncDirsSet; +extern set *libDirsSet; +extern set *libPathsSet; + +/* read the file with all the pic14 definitions and pick out the definition for a processor + * if specified. if pic_name is NULL reads everything */ +static PIC_device *find_device(char *pic_name) +{ + FILE *pic_file; + char pic_buf[PIC14_STRING_LEN]; + char *pic_buf_pos; + int found_processor = FALSE; + int done = FALSE; + char processor_name[SPLIT_WORDS_MAX][PIC14_STRING_LEN]; + int num_processor_names = 0; + int pic_maxram = 0; + int pic_bankmsk = 0; + int pic_confsiz = 0; + int pic_program = 0; + int pic_data = 0; + int pic_eeprom = 0; + int pic_io = 0; + char *simple_pic_name; + char *dir; + char filename[512]; + int len = 512; + + /* allow abbreviations of the form "f877" - convert to "16f877" */ + simple_pic_name = sanitise_processor_name(pic_name); + num_of_supported_PICS = 0; + + /* open the piclist file */ + /* first scan all include directories */ + pic_file = NULL; + //fprintf( stderr, "%s: searching %s\n", __FUNCTION__, DEVICE_FILE_NAME ); + for (dir = setFirstItem(includeDirsSet); + !pic_file && dir; + dir = setNextItem(includeDirsSet)) + { + //fprintf( stderr, "searching1 %s\n", dir ); + SNPRINTF(&filename[0], len, "%s%s%s", dir, DIR_SEPARATOR_STRING, DEVICE_FILE_NAME); + pic_file = fopen( filename, "rt" ); + if (pic_file) break; + } // for + for (dir = setFirstItem(userIncDirsSet); + !pic_file && dir; + dir = setNextItem(userIncDirsSet)) + { + //fprintf( stderr, "searching2 %s\n", dir ); + SNPRINTF(&filename[0], len, "%s%s%s", dir, DIR_SEPARATOR_STRING, DEVICE_FILE_NAME); + pic_file = fopen( filename, "rt" ); + if (pic_file) break; + } // for + for (dir = setFirstItem(libDirsSet); + !pic_file && dir; + dir = setNextItem(libDirsSet)) + { + //fprintf( stderr, "searching3 %s\n", dir ); + SNPRINTF(&filename[0], len, "%s%s%s", dir, DIR_SEPARATOR_STRING, DEVICE_FILE_NAME); + pic_file = fopen( filename, "rt" ); + if (pic_file) break; + } // for + for (dir = setFirstItem(libPathsSet); + !pic_file && dir; + dir = setNextItem(libPathsSet)) + { + //fprintf( stderr, "searching4 %s\n", dir ); + SNPRINTF(&filename[0], len, "%s%s%s", dir, DIR_SEPARATOR_STRING, DEVICE_FILE_NAME); + pic_file = fopen( filename, "rt" ); + if (pic_file) break; + } // for + if (!pic_file) { + pic_file = fopen(DATADIR LIB_DIR_SUFFIX DIR_SEPARATOR_STRING "pic" DIR_SEPARATOR_STRING DEVICE_FILE_NAME, "rt"); + } + if (pic_file == NULL) { + /* this second attempt is used when initially building the libraries */ + pic_file = fopen(".." DIR_SEPARATOR_STRING ".." DIR_SEPARATOR_STRING ".." DIR_SEPARATOR_STRING ".." + DIR_SEPARATOR_STRING "src" DIR_SEPARATOR_STRING "pic" DIR_SEPARATOR_STRING + DEVICE_FILE_NAME, "rt"); + if (pic_file == NULL) { + fprintf(stderr, "can't find %s\n", DATADIR LIB_DIR_SUFFIX DIR_SEPARATOR_STRING "pic" + DIR_SEPARATOR_STRING DEVICE_FILE_NAME); + return NULL; + } + } - do { - for (i=r->start_address; i<= r->end_address; i++) { - if ((i|alias) <= pic->maxRAMaddress) { - finalMapping[i | alias].isValid = 1; - finalMapping[i | alias].alias = r->alias; - finalMapping[i | alias].bank = r->bank; - if(type) { - /* hack for now */ - finalMapping[i | alias].isSFR = 1; - } else { - finalMapping[i | alias].isSFR = 0; + /* read line by line */ + pic_buf[sizeof(pic_buf)-1] = '\0'; + while (fgets(pic_buf, sizeof(pic_buf)-1, pic_file) != NULL && !done) { + + /* remove trailing spaces */ + while (isspace(pic_buf[strlen(pic_buf)-1])) + pic_buf[strlen(pic_buf)-1] = '\0'; + + /* remove leading spaces */ + for (pic_buf_pos = pic_buf; isspace(*pic_buf_pos); pic_buf_pos++) + {} + + /* ignore comment / empty lines */ + if (*pic_buf_pos != '\0' && *pic_buf_pos != '#') { + + /* split into fields */ + char pic_word[SPLIT_WORDS_MAX][PIC14_STRING_LEN]; + int num_pic_words; + int wcount; + + num_pic_words = split_words(pic_word, pic_buf_pos); + + if (STRCASECMP(pic_word[0], "processor") == 0) { + + if (pic_name == NULL) { + /* this is the mode where we read all the processors in - store the names for now */ + if (num_processor_names > 0) { + /* store away all the previous processor definitions */ + int dcount; + + for (dcount = 1; dcount < num_processor_names; dcount++) + create_pic(processor_name[dcount], pic_maxram, pic_bankmsk, + pic_confsiz, pic_program, pic_data, pic_eeprom, pic_io); + } + + num_processor_names = split_words(processor_name, pic_buf_pos); + } + else { + /* if we've just completed reading a processor definition stop now */ + if (found_processor) + done = TRUE; + else { + /* check if this processor name is a match */ + for (wcount = 1; wcount < num_pic_words; wcount++) { + + /* skip uninteresting prefixes */ + char *found_name = sanitise_processor_name(pic_word[wcount]); + + if (STRCASECMP(found_name, simple_pic_name) == 0) + found_processor = TRUE; + } + } + } + } + + else { + if (found_processor || pic_name == NULL) { + /* only parse a processor section if we've found the one we want */ + if (STRCASECMP(pic_word[0], "maxram") == 0 && num_pic_words > 1) { + pic_maxram = parse_config_value(pic_word[1]); + setMaxRAM(pic_maxram); + } + else if (STRCASECMP(pic_word[0], "bankmsk") == 0 && num_pic_words > 1) + pic_bankmsk = parse_config_value(pic_word[1]); + + else if (STRCASECMP(pic_word[0], "confsiz") == 0 && num_pic_words > 1) + pic_confsiz = parse_config_value(pic_word[1]); + + else if (STRCASECMP(pic_word[0], "program") == 0 && num_pic_words > 1) + pic_program = parse_config_value(pic_word[1]); + + else if (STRCASECMP(pic_word[0], "data") == 0 && num_pic_words > 1) + pic_data = parse_config_value(pic_word[1]); + + else if (STRCASECMP(pic_word[0], "eeprom") == 0 && num_pic_words > 1) + pic_eeprom = parse_config_value(pic_word[1]); + + else if (STRCASECMP(pic_word[0], "io") == 0 && num_pic_words > 1) + pic_io = parse_config_value(pic_word[1]); + + else if (STRCASECMP(pic_word[0], "regmap") == 0 && num_pic_words > 2) { + if (found_processor) + register_map(num_pic_words, pic_word); + } + else if (STRCASECMP(pic_word[0], "memmap") == 0 && num_pic_words > 2) { + if (found_processor) + ram_map(num_pic_words, pic_word); + } + else { + fprintf(stderr, "WARNING: %s: bad syntax `%s'\n", DEVICE_FILE_NAME, pic_word[0]); + } } - } else { - fprintf(stderr, "WARNING: %s:%s memory at 0x%x is beyond max ram = 0x%x\n", - __FILE__,__FUNCTION__,(i|alias), pic->maxRAMaddress); } } + } + + fclose(pic_file); + + /* if we're in read-the-lot mode then create the final processor definition */ + if (pic_name == NULL) { + + if (num_processor_names > 0) { + /* store away all the previous processor definitions */ + int dcount; - /* Decrement alias */ - if (alias) { - alias -= ((alias & (alias - 1)) ^ alias); - } else { - alias--; + for (dcount = 1; dcount < num_processor_names; dcount++) + create_pic(processor_name[dcount], pic_maxram, pic_bankmsk, + pic_confsiz, pic_program, pic_data, pic_eeprom, pic_io); } - - } while (alias >= 0); + } + else { + /* in search mode */ + if (found_processor) { + /* create a new pic entry */ + return create_pic(pic_name, pic_maxram, pic_bankmsk, + pic_confsiz, pic_program, pic_data, pic_eeprom, pic_io); + } + } + + return NULL; } void setMaxRAM(int size) { - int i; - pic->maxRAMaddress = size; + maxRAMaddress = size; - if (pic->maxRAMaddress < 0) { - fprintf(stderr, "invalid \"#pragma maxram 0x%x\" setting\n", - pic->maxRAMaddress); + if (maxRAMaddress < 0) { + fprintf(stderr, "invalid maxram 0x%x setting in %s\n", + maxRAMaddress, DEVICE_FILE_NAME); return; } - - finalMapping = Safe_calloc(1+pic->maxRAMaddress, - sizeof(AssignedMemory)); - - /* Now initialize the finalMapping array */ - - for(i=0; i<=pic->maxRAMaddress; i++) { - finalMapping[i].reg = NULL; - finalMapping[i].isValid = 0; - } } /*-----------------------------------------------------------------* @@ -186,204 +436,106 @@ int REGallBanks(regs *reg) } /*-----------------------------------------------------------------* -*-----------------------------------------------------------------*/ - -/* -* dump_map -- debug stuff -*/ - -void dump_map(void) -{ - int i; - - for(i=0; i<=pic->maxRAMaddress; i++) { - //fprintf(stdout , "addr 0x%02x is %s\n", i, ((finalMapping[i].isValid) ? "valid":"invalid")); - - if(finalMapping[i].isValid) { - fprintf(stderr,"addr: 0x%02x",i); - if(finalMapping[i].isSFR) - fprintf(stderr," isSFR"); - if(finalMapping[i].reg) - fprintf( stderr, " reg %s", finalMapping[i].reg->name); - fprintf(stderr, "\n"); - } - } - -} - -void dump_sfr(FILE *of) + * void list_valid_pics(int ncols, int list_alias) + * + * Print out a formatted list of valid PIC devices + * + * ncols - number of columns in the list. + * + * list_alias - if non-zero, print all of the supported aliases + * for a device (e.g. F84, 16F84, etc...) + *-----------------------------------------------------------------*/ +void list_valid_pics(int ncols) { + int col=0,longest; + int i,k,l; - int start=-1; - int addr=0; - int bank_base; - static int udata_flag=0; - - //dump_map(); /* display the register map */ - //fprintf(stdout,";dump_sfr \n"); - if (pic->maxRAMaddress < 0) { - fprintf(stderr, "missing \"#pragma maxram\" setting\n"); - return; - } - - do { - - if(finalMapping[addr].reg && !finalMapping[addr].reg->isEmitted) { - - if(start<0) - start = addr; - } else { - if(start>=0) { - - /* clear the lower 7-bits of the start address of the first - * variable declared in this bank. The upper bits for the mid - * range pics are the bank select bits. - */ - - bank_base = start & 0xfff8; - - /* The bank number printed in the cblock comment tacitly - * assumes that the first register in the contiguous group - * of registers represents the bank for the whole group */ - - if ( (start != addr) && (!udata_flag) ) { - udata_flag = 1; - //fprintf(of,"\tudata\n"); - } - - for( ; start < addr; start++) { - if((finalMapping[start].reg) && - (!finalMapping[start].reg->isEmitted) && - (!finalMapping[start].instance) && - (!finalMapping[start].isSFR)) { - - if (finalMapping[start].reg->isFixed) { - unsigned i; - for (i=0; isize; i++) { - fprintf(of,"%s\tEQU\t0x%04x\n", - finalMapping[start].reg->name, - finalMapping[start].reg->address+i); - } - } else { - fprintf(of,"%s\tres\t%i\n", - finalMapping[start].reg->name, - finalMapping[start].reg->size); - } - finalMapping[start].reg->isEmitted = 1; - } - } - - start = -1; - } - - } - - addr++; - - } while(addr <= pic->maxRAMaddress); - - -} - -/*-----------------------------------------------------------------* -* void list_valid_pics(int ncols, int list_alias) -* -* Print out a formatted list of valid PIC devices -* -* ncols - number of columns in the list. -* -* list_alias - if non-zero, print all of the supported aliases -* for a device (e.g. F84, 16F84, etc...) -*-----------------------------------------------------------------*/ -void list_valid_pics(int ncols, int list_alias) -{ - int col,longest; - int i,j,k,l; - - if(list_alias) - list_alias = sizeof(Pics[0].name) / sizeof(Pics[0].name[0]); + if (num_of_supported_PICS == 0) + find_device(NULL); /* load all the definitions */ /* decrement the column number if it's greater than zero */ ncols = (ncols > 1) ? ncols-1 : 4; /* Find the device with the longest name */ for(i=0,longest=0; ilongest) - longest = k; - } + k = strlen(Pics[i]->name); + if(k>longest) + longest = k; } +#if 1 + /* heading */ + fprintf(stderr, "\nPIC14 processors and their characteristics:\n\n"); + fprintf(stderr, " processor"); + for(k=0; kname); + l = longest + 2 - strlen(Pics[i]->name); + for(k=0; kprogramMemSize % 1024 == 0) + fprintf(stderr, "%4dK", Pics[i]->programMemSize / 1024); + else + fprintf(stderr, "%5d", Pics[i]->programMemSize); + + fprintf(stderr, " %5d %5d %4d\n", + Pics[i]->dataMemSize, Pics[i]->eepromMemSize, Pics[i]->ioPins); + } + col = 0; + fprintf(stderr, "\nPIC14 processors supported:\n"); for(i=0; i < num_of_supported_PICS; i++) { - j = 0; - do { - fprintf(stderr,"%s", Pics[i].name[j]); - if(colname); + if(colname); + for(k=0; kmaxRAMaddress = -1; + return pic; } /*-----------------------------------------------------------------* @@ -391,7 +543,7 @@ void init_pic(char *pic_type) *-----------------------------------------------------------------*/ int picIsInitialized(void) { - if(pic && pic->maxRAMaddress > 0) + if(pic && maxRAMaddress > 0) return 1; return 0; @@ -407,42 +559,28 @@ char *processor_base_name(void) if(!pic) return NULL; - return pic->name[0]; -} - -int isSFR(int address) -{ - - if( (address > pic->maxRAMaddress) || !finalMapping[address].isSFR) - return 0; - - return 1; - + return pic->name; } /*-----------------------------------------------------------------* *-----------------------------------------------------------------*/ int validAddress(int address, int reg_size) { - int i; - - if (pic->maxRAMaddress < 0) { - fprintf(stderr, "missing \"#pragma maxram\" setting\n"); + if (maxRAMaddress < 0) { + fprintf(stderr, "missing maxram setting in %s\n", DEVICE_FILE_NAME); return 0; } // fprintf(stderr, "validAddress: Checking 0x%04x\n",address); - if(address > pic->maxRAMaddress) + assert (reg_size > 0); + if(address + (reg_size - 1) > maxRAMaddress) return 0; - for (i=0; imaxRAMaddress < 0) { - fprintf(stderr, "missing \"#pragma maxram\" setting\n"); + if (maxRAMaddress < 0) { + fprintf(stderr, "missing maxram setting in %s\n", DEVICE_FILE_NAME); return; } for(i=0; isize; i++) { + assert(reg->address >= 0 && reg->address < maxRAMaddress); + alias = finalMapping[reg->address].alias; reg->alias = alias; @@ -503,21 +643,18 @@ int assignRegister(regs *reg, int start_address) return reg->address; } - if( isSFR(reg->address)) { - mapRegister(reg); - return reg->address; + if (getenv("SDCCPICDEBUG")) { + fprintf(stderr, "WARNING: Ignoring Out of Range register assignment at fixed address %d, %s\n", + reg->address, reg->name); } - //fprintf(stderr, "WARNING: Ignoring Out of Range register assignment at fixed address %d, %s\n", - // reg->address, reg->name); - } else { /* This register does not have a fixed address requirement * so we'll search through all availble ram address and * assign the first one */ - for (i=start_address; i<=pic->maxRAMaddress; i++) { + for (i=start_address; i<=maxRAMaddress; i++) { if (validAddress(i,reg->size)) { reg->address = i; @@ -559,9 +696,9 @@ void assignRelocatableRegisters(set *regset, int used) for (reg = setFirstItem(regset) ; reg ; reg = setNextItem(regset)) { - //fprintf(stdout,"assigning %s isFixed=%d, wasUsed=%d\n",reg->name,reg->isFixed,reg->wasUsed); + //fprintf(stdout,"assigning %s (%d) isFixed=%d, wasUsed=%d\n",reg->name,reg->size,reg->isFixed,reg->wasUsed); - if((!reg->isFixed) && ( used || reg->wasUsed)) { + if((!reg->isExtern) && (!reg->isFixed) && ( used || reg->wasUsed)) { /* If register have been reused then shall not print it a second time. */ set *s; int done = 0; @@ -584,37 +721,215 @@ void assignRelocatableRegisters(set *regset, int used) } } +#endif +/* Keep track of whether we found an assignment to the __config words. */ +static int pic14_hasSetConfigWord = 0; /*-----------------------------------------------------------------* -* void assignConfigWordValue(int address, int value) -* -* All midrange PICs have one config word at address 0x2007. -* This routine will assign a value to that address. -* -*-----------------------------------------------------------------*/ - -void assignConfigWordValue(int address, int value) + * void assignConfigWordValue(int address, int value) + * + * Most midrange PICs have one config word at address 0x2007. + * Newer PIC14s have a second config word at address 0x2008. + * This routine will assign values to those addresses. + * + *-----------------------------------------------------------------*/ + +void pic14_assignConfigWordValue(int address, int value) { - if(CONFIG_WORD_ADDRESS == address) + if (CONFIG_WORD_ADDRESS == address) config_word = value; - //fprintf(stderr,"setting config word to 0x%x\n",value); + else if (CONFIG2_WORD_ADDRESS == address) + config2_word = value; + //fprintf(stderr,"setting config word 0x%x to 0x%x\n", address, value); + pic14_hasSetConfigWord = 1; } + /*-----------------------------------------------------------------* -* int getConfigWord(int address) -* -* Get the current value of the config word. -* -*-----------------------------------------------------------------*/ + * int pic14_emitConfigWord (FILE * vFile) + * + * Emit the __config directives iff we found a previous assignment + * to the config word. + *-----------------------------------------------------------------*/ +extern char *iComments2; +int pic14_emitConfigWord (FILE * vFile) +{ + if (pic14_hasSetConfigWord) + { + fprintf (vFile, "%s", iComments2); + fprintf (vFile, "; config word \n"); + fprintf (vFile, "%s", iComments2); + if (pic14_getHasSecondConfigReg()) + { + fprintf (vFile, "\t__config _CONFIG1, 0x%x\n", pic14_getConfigWord(0x2007)); + fprintf (vFile, "\t__config _CONFIG2, 0x%x\n", pic14_getConfigWord(0x2008)); + } + else + fprintf (vFile, "\t__config 0x%x\n", pic14_getConfigWord(0x2007)); + + return 1; + } + return 0; +} + +/*-----------------------------------------------------------------* + * int pic14_getConfigWord(int address) + * + * Get the current value of a config word. + * + *-----------------------------------------------------------------*/ -int getConfigWord(int address) +int pic14_getConfigWord(int address) { - if(CONFIG_WORD_ADDRESS == address) + switch (address) + { + case CONFIG_WORD_ADDRESS: return config_word; - else + case CONFIG2_WORD_ADDRESS: + return config2_word; + + default: + return 0; + } +} + +/*-----------------------------------------------------------------* +* +*-----------------------------------------------------------------*/ +unsigned pic14_getMaxRam(void) +{ + return pic->defMaxRAMaddrs; +} + + +/*-----------------------------------------------------------------* +* int getHasSecondConfigReg(void) - check if the device has a +* second config register, rather than just one. +*-----------------------------------------------------------------*/ +int pic14_getHasSecondConfigReg(void) +{ + if(!pic) return 0; + else + return pic->hasSecondConfigReg; +} + +/*-----------------------------------------------------------------* + * True iff the device has memory aliased in every bank. + * If true, low and high will be set to the low and high address + * occupied by the (last) sharebank found. + *-----------------------------------------------------------------*/ +int pic14_hasSharebank(int *low, int *high, int *size) +{ + memRange *r; + + assert(pic); + r = pic->ram; + + while (r) { + //fprintf (stderr, "%s: region %x..%x, bank %x, alias %x, pic->bankmask %x, min_size %d\n", __FUNCTION__, r->start_address, r->end_address, r->bank, r->alias, pic->bankMask, size ? *size : 0); + // find sufficiently large shared region + if ((r->alias == pic->bankMask) + && (r->end_address != r->start_address) // ignore SFRs + && (!size || (*size <= (r->end_address - r->start_address + 1)))) + { + if (low) *low = r->start_address; + if (high) *high = r->end_address; + if (size) *size = r->end_address - r->start_address + 1; + return 1; + } // if + r = r->next; + } // while + + if (low) *low = 0x0; + if (high) *high = 0x0; + if (size) *size = 0x0; + //fprintf (stderr, "%s: no shared bank found\n", __FUNCTION__); + return 0; +} + +/* + * True iff the memory region [low, high] is aliased in all banks. + */ +int pic14_isShared(int low, int high) +{ + memRange *r; + + assert(pic); + r = pic->ram; + + while (r) { + //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); + if ((r->alias == pic->bankMask) && (r->start_address <= low) && (r->end_address >= high)) { + return 1; + } // if + r = r->next; + } // while + + return 0; +} + +/* + * True iff all RAM is aliased in all banks (no BANKSELs required except for + * SFRs). + */ +int pic14_allRAMShared(void) +{ + memRange *r; + + assert(pic); + r = pic->ram; + + while (r) { + if (r->alias != pic->bankMask) return 0; + r = r->next; + } // while + return 1; +} + +/* + * True iff the pseudo stack is a sharebank --> let linker place it. + * [low, high] denotes a size byte long block of (shared or banked) + * memory to be used. + */ +int pic14_getSharedStack(int *low, int *high, int *size) +{ + int haveShared; + int l, h, s; + + s = options.stack_size ? options.stack_size : 0x10; + haveShared = pic14_hasSharebank(&l, &h, &s); + if ((options.stack_loc != 0) || !haveShared) + { + // sharebank not available or not to be used + s = options.stack_size ? options.stack_size : 0x10; + l = options.stack_loc ? options.stack_loc : 0x20; + h = l + s - 1; + if (low) *low = l; + if (high) *high = h; + if (size) *size = s; + // return 1 iff [low, high] is present in all banks + //fprintf(stderr, "%s: low %x, high %x, size %x, shared %d\n", __FUNCTION__, l, h, s, pic14_isShared(l, h)); + return (pic14_isShared(l, h)); + } else { + // sharebanks available for use by the stack + if (options.stack_size) s = options.stack_size; + else if (!s || s > 16) s = 16; // limit stack to 16 bytes in SHAREBANK + + // provide addresses for sharebank + if (low) *low = l; + if (high) *high = l + s - 1; + if (size) *size = s; + //fprintf(stderr, "%s: low %x, high %x, size %x, shared 1\n", __FUNCTION__, l, h, s); + return 1; + } +} + +PIC_device * pic14_getPIC(void) +{ + return pic; }