-------------------------------------------------------------------------*/
#include <stdio.h>
+#include <stdlib.h>
+#include <ctype.h>
#include "common.h" // Include everything in the SDCC src directory
#include "newalloc.h"
#if defined(__BORLANDC__) || defined(_MSC_VER)
#define STRCASECMP stricmp
+#define STRNCASECMP strnicmp
#else
#define STRCASECMP strcasecmp
+#define STRNCASECMP strncasecmp
#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) */
- 0x1ff, /* default max ram address */
- 0x80, /* Bank Mask */
- },
-
- {
- {"p16f628", "16f628", "pic16f628", "f628"},
- (memRange *)NULL,
- (memRange *)NULL,
- 0,
- 0x1ff,
- 0x80,
- },
-
- {
- {"p16f84", "16f84", "pic16f84", "f84"},
- (memRange *)NULL,
- (memRange *)NULL,
- 0,
- 0x4f, /* 68 register available 0x0C to 0x4F (0x8C to 0xCF mapped to bank 0) */
- 0x80,
- },
-
- {
- {"p16f873", "16f873", "pic16f873", "f873"},
- (memRange *)NULL,
- (memRange *)NULL,
- 0,
- 0x1ff,
- 0x180,
- },
-
- {
- {"p16f877", "16f877", "pic16f877", "f877"},
- (memRange *)NULL,
- (memRange *)NULL,
- 0,
- 0x1ff,
- 0x180,
- },
-
- {
- {"p16f819", "16f819", "pic16f819", "f819"},
- (memRange *)NULL,
- (memRange *)NULL,
- 0,
- 0x1ff,
- 0x80,
- },
-
-};
-
-static int num_of_supported_PICS = sizeof(Pics)/sizeof(PIC_device);
+#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;
AssignedMemory *finalMapping=NULL;
#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;
extern int pic14_is_shared (regs *reg);
extern void emitSymbolToFile (FILE *of, const char *name, const char *section_type, int size, int addr, int useEQU, int globalize);
+
+/* 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" */
+
+ 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++;
+ }
+
+ return num_words;
+}
+
+
+/* remove annoying prefixes from the processor name */
+static char *sanitise_processor_name(char *name)
+{
+ char *proc_pos = name;
+
+ if (name == NULL)
+ return NULL;
+
+ if (STRNCASECMP(proc_pos, "pic16", 5) == 0)
+ proc_pos += 5;
+
+ else if (STRNCASECMP(proc_pos, "p16", 3) == 0)
+ proc_pos += 3;
+
+ else if (STRNCASECMP(proc_pos, "16", 2) == 0)
+ proc_pos += 2;
+
+ return proc_pos;
+}
+
+
+/* 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[0] = Safe_calloc(strlen(simple_pic_name)+3, sizeof(char));
+ sprintf(new_pic->name[0], "16%s", simple_pic_name);
+ new_pic->name[1] = Safe_calloc(strlen(simple_pic_name)+4, sizeof(char));
+ sprintf(new_pic->name[1], "p16%s", simple_pic_name);
+ new_pic->name[2] = Safe_calloc(strlen(simple_pic_name)+6, sizeof(char));
+ sprintf(new_pic->name[2], "pic16%s", simple_pic_name);
+ new_pic->name[3] = Safe_calloc(strlen(simple_pic_name)+1, sizeof(char));
+ strcpy(new_pic->name[3], 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;
+
+ Pics[num_of_supported_PICS] = new_pic;
+ num_of_supported_PICS++;
+
+ return new_pic;
+}
+
+
+/* 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;
+ }
+
+ r.alias = parse_config_value(word[1]);
+
+ for (pcount = 2; pcount < num_words; pcount++) {
+
+ r.start_address = parse_config_value(word[pcount]);
+ r.end_address = parse_config_value(word[pcount]);
+ r.bank = (r.start_address >> 7) & 3;
+
+ addMemRange(&r, 1);
+ }
+}
+
+
+/* define ram areas - may be duplicated across banks */
+static void ram_map(int num_words, char word[SPLIT_WORDS_MAX][PIC14_STRING_LEN])
+{
+ memRange r;
+
+ if (num_words < 4) {
+ fprintf(stderr, "WARNING: not enough values in %s memmap directive\n", DEVICE_FILE_NAME);
+ return;
+ }
+
+ 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;
+
+ addMemRange(&r, 0);
+}
+
+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;
+
+ 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;
+ }
+ }
+
+ /* 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]);
+ }
+ }
+ }
+ }
+ }
+
+ 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;
+
+ 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);
+ }
+ }
+ 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 addMemRange(memRange *r, int type)
{
int i;
int alias = r->alias;
- 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;
}
do {
for (i=r->start_address; i<= r->end_address; i++) {
- if ((i|alias) <= pic->maxRAMaddress) {
+ if ((i|alias) <= maxRAMaddress) {
+ /* if we haven't seen this address before, enter it */
+ if (!finalMapping[i | alias].isValid) {
finalMapping[i | alias].isValid = 1;
finalMapping[i | alias].alias = r->alias;
finalMapping[i | alias].bank = r->bank;
} else {
finalMapping[i | alias].isSFR = 0;
}
+ }
} else {
fprintf(stderr, "WARNING: %s:%s memory at 0x%x is beyond max ram = 0x%x\n",
- __FILE__,__FUNCTION__,(i|alias), pic->maxRAMaddress);
+ __FILE__,__FUNCTION__,(i|alias), maxRAMaddress);
}
}
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,
+ finalMapping = Safe_calloc(1+maxRAMaddress,
sizeof(AssignedMemory));
/* Now initialize the finalMapping array */
- for(i=0; i<=pic->maxRAMaddress; i++) {
+ for(i=0; i<=maxRAMaddress; i++) {
finalMapping[i].reg = NULL;
finalMapping[i].isValid = 0;
finalMapping[i].bank = (i>>7);
int isSFR(int address)
{
- if( (address > pic->maxRAMaddress) || !finalMapping[address].isSFR)
+ if( (address > maxRAMaddress) || !finalMapping[address].isSFR)
return 0;
return 1;
{
int i;
- for(i=0; i<=pic->maxRAMaddress; i++) {
+ for(i=0; i<=maxRAMaddress; i++) {
//fprintf(stdout , "addr 0x%02x is %s\n", i, ((finalMapping[i].isValid) ? "valid":"invalid"));
if(finalMapping[i].isValid) {
//dump_map(); /* display the register map */
//fprintf(stdout,";dump_sfr \n");
- 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;
}
- for (addr = 0; addr <= pic->maxRAMaddress; addr++)
+ for (addr = 0; addr <= maxRAMaddress; addr++)
{
regs *reg = finalMapping[addr].reg;
if (pic14_options.isLibrarySource && pic14_is_shared (reg))
{
/* rely on external declarations for the non-fixed stack */
- fprintf (of, "\textern\t%s\n", reg->name);
+ /* Update: We always emit the STACK symbols into a
+ * udata_shr section, so no extern declaration is
+ * required. */
+ //fprintf (of, "\textern\t%s\n", reg->name);
} else {
emitSymbolToFile (of, reg->name, "udata", reg->size, reg->isFixed ? reg->address : -1, 0, pic14_is_shared (reg));
}
addr++;
- } while(addr <= pic->maxRAMaddress);
+ } while(addr <= maxRAMaddress);
#endif
*-----------------------------------------------------------------*/
void list_valid_pics(int ncols, int list_alias)
{
- int col,longest;
- int i,j,k,l;
+ int col=0,longest;
+ int i,j,k;
+ int max_alias = 1;
+
+ if (num_of_supported_PICS == 0)
+ find_device(NULL); /* load all the definitions */
if(list_alias)
- list_alias = sizeof(Pics[0].name) / sizeof(Pics[0].name[0]);
+ max_alias = PROCESSOR_NAMES;
/* 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; i<num_of_supported_PICS; i++) {
- for(j=0; j<=list_alias; j++) {
- k = strlen(Pics[i].name[j]);
+ for(j=0; j<max_alias; j++) {
+ k = strlen(Pics[i]->name[j]);
if(k>longest)
longest = k;
}
}
+#if 0
+ /* heading */
+ fprintf(stderr, "\nPIC14 processors and their characteristics:\n\n");
+ fprintf(stderr, " processor");
+ for(k=0; k<longest-1; k++)
+ fputc(' ',stderr);
+ fprintf(stderr, "program RAM EEPROM I/O\n");
+ fprintf(stderr, "-----------------------------------------------------\n");
+
+ for(i=0; i < num_of_supported_PICS; i++) {
+ fprintf(stderr," %s", Pics[i]->name[0]);
+ l = longest + 2 - strlen(Pics[i]->name[0]);
+ for(k=0; k<l; k++)
+ fputc(' ',stderr);
+
+ fprintf(stderr, " ");
+ if (Pics[i]->programMemSize % 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]);
+ for (j = 0; j<max_alias; j++) {
+
+ fprintf(stderr,"%s", Pics[i]->name[j]);
if(col<ncols) {
- l = longest + 2 - strlen(Pics[i].name[j]);
+ l = longest + 2 - strlen(Pics[i]->name[j]);
for(k=0; k<l; k++)
fputc(' ',stderr);
col = 0;
}
- } while(++j<list_alias);
+ }
}
- if(col != ncols)
+#endif
+ if(col != 0)
fputc('\n',stderr);
-
-}
-
-/*-----------------------------------------------------------------*
-*
-*-----------------------------------------------------------------*/
-PIC_device *find_device(char *name)
-{
-
- int i,j;
-
- if(!name)
- return NULL;
-
- for(i = 0; i<num_of_supported_PICS; i++) {
-
- for(j=0; j<PROCESSOR_NAMES; j++)
- if(!STRCASECMP(Pics[i].name[j], name) )
- return &Pics[i];
- }
-
- /* not found */
- return NULL;
}
/*-----------------------------------------------------------------*
else
fprintf(stderr, "No processor has been specified (use -pPROCESSOR_NAME)\n");
- fprintf(stderr,"Valid devices are:\n");
-
- list_valid_pics(4,0);
+ list_valid_pics(7,0);
exit(1);
}
-
- pic->maxRAMaddress = -1;
}
/*-----------------------------------------------------------------*
*-----------------------------------------------------------------*/
int picIsInitialized(void)
{
- if(pic && pic->maxRAMaddress > 0)
+ if(pic && maxRAMaddress > 0)
return 1;
return 0;
if(!pic)
return NULL;
- return pic->name[0];
+ return pic->name[1];
}
/*-----------------------------------------------------------------*
{
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);
assert (reg_size > 0);
- if(address + (reg_size - 1) > pic->maxRAMaddress)
+ if(address + (reg_size - 1) > maxRAMaddress)
return 0;
for (i=0; i<reg_size; i++)
return;
}
- 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;
}
* 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;
/*-----------------------------------------------------------------*
* 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.
+* 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 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);
}
/*-----------------------------------------------------------------*
* int getConfigWord(int address)
*
-* Get the current value of the config word.
+* Get the current value of a config word.
*
*-----------------------------------------------------------------*/
int getConfigWord(int address)
{
- if(CONFIG_WORD_ADDRESS == address)
+ switch (address)
+ {
+ case CONFIG_WORD_ADDRESS:
return config_word;
- else
- return 0;
+ case CONFIG2_WORD_ADDRESS:
+ return config2_word;
+ default:
+ return 0;
+ }
}
/*-----------------------------------------------------------------*
*
*-----------------------------------------------------------------*/
-void setDefMaxRam(void)
+unsigned getMaxRam(void)
{
- unsigned i;
- setMaxRAM(pic->defMaxRAMaddrs); /* Max RAM has not been included, so use default setting */
- /* Validate full memory range for use by general purpose RAM */
- for (i=0; i <= pic->defMaxRAMaddrs; i++) {
- finalMapping[i].bank = (i>>7);
- finalMapping[i].isValid = 1;
- }
+ return pic->defMaxRAMaddrs;
}
+
/*-----------------------------------------------------------------*
-*
+* int getHasSecondConfigReg(void) - check if the device has a
+* second config register, rather than just one.
*-----------------------------------------------------------------*/
-unsigned getMaxRam(void)
+int getHasSecondConfigReg(void)
{
- return pic->defMaxRAMaddrs;
+ if(!pic)
+ return 0;
+ else
+ return pic->hasSecondConfigReg;
+}
+
+/*-----------------------------------------------------------------*
+ * Query the size of the sharebank of the selected device.
+ * FIXME: Currently always returns 16.
+ *-----------------------------------------------------------------*/
+int pic14_getSharebankSize(void)
+{
+ return 16;
}
+
+/*-----------------------------------------------------------------*
+ * Query the highest byte address occupied by the sharebank of the
+ * selected device.
+ * FIXME: Currently always returns 0x7f.
+ * THINK: Might not be needed, if we assign all shareable objects to
+ * a `udata_shr' section and let the linker do the rest...
+ * Tried it, but yields `no target memory available' for pic16f877...
+ *-----------------------------------------------------------------*/
+int pic14_getSharebankAddress(void)
+{
+ int sharebankAddress = 0x7f;
+ /* If total RAM is less than 0x7f as with 16f84 then reduce
+ * sharebankAddress to fit */
+ if ((unsigned)sharebankAddress > getMaxRam())
+ sharebankAddress = (int)getMaxRam();
+ return sharebankAddress;
+}
+
projects / fw / sdcc / blobdiff