#include "ralloc.h"
#include "device.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 *pic=NULL;
int maxRAMaddress = 0;
-AssignedMemory *finalMapping=NULL;
#define CONFIG_WORD_ADDRESS 0x2007
#define CONFIG2_WORD_ADDRESS 0x2008
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);
+static memRange *rangeRAM = NULL;
/* parse a value from the configuration file */
new_pic->dataMemSize = data;
new_pic->eepromMemSize = eeprom;
new_pic->ioPins = io;
+
+ new_pic->ram = rangeRAM;
Pics[num_of_supported_PICS] = new_pic;
num_of_supported_PICS++;
/* 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;
+ 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;
+ r = Safe_calloc(1, sizeof(memRange));
- addMemRange(&r, 1);
+ 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;
}
}
/* 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;
+ memRange *r;
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;
+ 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);
+ // add memRange to device entry for future lookup (sharebanks)
+ r->next = rangeRAM;
+ rangeRAM = r;
}
extern set *includeDirsSet;
return NULL;
}
-void addMemRange(memRange *r, int type)
-{
- int i;
- int alias = r->alias;
-
- 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) <= 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;
- if(type) {
- /* hack for now */
- finalMapping[i | alias].isSFR = 1;
- } else {
- finalMapping[i | alias].isSFR = 0;
- }
- }
- } else {
- if (getenv("SDCCPICDEBUG")) {
- fprintf(stderr, "WARNING: %s:%s memory at 0x%x is beyond max ram = 0x%x\n",
- __FILE__,__FUNCTION__,(i|alias), maxRAMaddress);
- }
- }
- }
-
- /* Decrement alias */
- if (alias) {
- alias -= ((alias & (alias - 1)) ^ alias);
- } else {
- alias--;
- }
-
- } while (alias >= 0);
-}
-
void setMaxRAM(int size)
{
- int i;
maxRAMaddress = size;
if (maxRAMaddress < 0) {
maxRAMaddress, DEVICE_FILE_NAME);
return;
}
-
- finalMapping = Safe_calloc(1+maxRAMaddress,
- sizeof(AssignedMemory));
-
- /* Now initialize the finalMapping array */
-
- 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 > maxRAMaddress) || !finalMapping[address].isSFR)
- return 0;
-
- return 1;
-
-}
-
-/*
-* dump_map -- debug stuff
-*/
-
-void dump_map(void)
-{
- int 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) {
- 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)
-{
-#if 0
- int start=-1;
- int bank_base;
- static int udata_flag=0;
-#endif
- int addr=0;
-
- //dump_map(); /* display the register map */
- //fprintf(stdout,";dump_sfr \n");
- if (maxRAMaddress < 0) {
- fprintf(stderr, "missing maxram setting in %s\n", DEVICE_FILE_NAME);
- return;
- }
-
- for (addr = 0; addr <= maxRAMaddress; addr++)
- {
- regs *reg = finalMapping[addr].reg;
-
- if (reg && !reg->isEmitted)
- {
- if (pic14_options.isLibrarySource && pic14_is_shared (reg))
- {
- /* rely on external declarations for the non-fixed stack */
- /* 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));
- }
-
- reg->isEmitted = 1;
- }
- } // for
-
-#if 0
- 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; i<finalMapping[start].reg->size; i++) {
- fprintf(of,"%s\tEQU\t0x%04x\n",
- finalMapping[start].reg->name,
- finalMapping[start].reg->address+i);
- }
- } else {
- emitSymbolToFile (of, finalMapping[start].reg->name, finalMapping[start].reg->size);
-#if 0
- fprintf(of,"%s\tres\t%i\n",
- finalMapping[start].reg->name,
- finalMapping[start].reg->size);
-#endif
- }
- finalMapping[start].reg->isEmitted = 1;
- }
- }
-
- start = -1;
- }
-
- }
-
- addr++;
-
- } while(addr <= maxRAMaddress);
-
-
-#endif
-}
-
-/*-----------------------------------------------------------------*
-* 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)
+ *
+ * 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;
/*-----------------------------------------------------------------*
*
*-----------------------------------------------------------------*/
-void init_pic(char *pic_type)
+PIC_device *init_pic(char *pic_type)
{
char long_name[PIC14_STRING_LEN];
exit(1);
}
}
+ return pic;
}
/*-----------------------------------------------------------------*
*-----------------------------------------------------------------*/
int validAddress(int address, int reg_size)
{
- int i;
-
if (maxRAMaddress < 0) {
fprintf(stderr, "missing maxram setting in %s\n", DEVICE_FILE_NAME);
return 0;
if(address + (reg_size - 1) > maxRAMaddress)
return 0;
- for (i=0; i<reg_size; i++)
- if(!finalMapping[address + i].isValid ||
- finalMapping[address+i].reg ||
- finalMapping[address+i].isSFR )
- return 0;
-
- return 1;
+ return 1;
}
+#if 0
+/* The following code should be (and is) implemented in the linker. */
+
/*-----------------------------------------------------------------*
*-----------------------------------------------------------------*/
void mapRegister(regs *reg)
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);
}
}
+#endif
/* Keep track of whether we found an assignment to the __config words. */
static int pic14_hasSetConfigWord = 0;
}
/*-----------------------------------------------------------------*
- * Query the size of the sharebank of the selected device.
- * FIXME: Currently always returns 16.
+ * 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_getSharebankSize(void)
+int pic14_hasSharebank(int *low, int *high, int *size)
{
- if (pic14_options.stackSize <= 0) {
- // default size: 16 bytes
- return 16;
- } else {
- return pic14_options.stackSize;
- }
+ 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;
}
-/*-----------------------------------------------------------------*
- * Query the highest byte address occupied by the sharebank of the
- * selected device.
- * 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)
+/*
+ * True iff the memory region [low, high] is aliased in all banks.
+ */
+int pic14_isShared(int low, int high)
{
- int sharebankAddress = 0x7f;
- if (pic14_options.stackLocation != 0) {
- // permanent (?) workaround for pic16f84a-like devices with hardly
- // any memory:
- // 0x00-0x0B SFR
- // 0x0C-0x4F memory,
- // 0x50-0x7F unimplemented (reads as 0),
- // 0x80-0x8B SFRs (partly mapped to 0x0?)
- // 0x8c-0xCF mapped to 0x0C-0x4F
- sharebankAddress = pic14_options.stackLocation + pic14_getSharebankSize() - 1;
- } else {
- /* If total RAM is less than 0x7f as with 16f84 then reduce
- * sharebankAddress to fit */
- if ((unsigned)sharebankAddress > pic14_getMaxRam())
- sharebankAddress = (int)pic14_getMaxRam();
- }
- return sharebankAddress;
+ 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;
+}
projects / fw / sdcc / blobdiff