2 pic14 specific general functions.
4 Note that mlh prepended _pic14_ on the static functions. Makes
5 it easier to set a breakpoint using the debugger.
12 #include "SDCCmacro.h"
19 static char _defaultRules[] =
25 /* list of key words used by pic14 */
26 static char *_pic14_keywords[] =
53 pic14_options_t pic14_options;
55 #define ARG_STACKLOC "--stack-loc"
56 #define ARG_STACKSIZ "--stack-size"
58 extern int debug_verbose; /* from pcode.c */
59 static OPTION _pic14_poptions[] = {
60 { 0 , "--debug-xtra", &debug_verbose, "show more debug info in assembly output" },
61 { 0 , "--no-pcode-opt", &pic14_options.disable_df, "disable (slightly faulty) optimization on pCode" },
62 { 0 , ARG_STACKLOC, NULL, "sets the lowest address of the argument passing stack" },
63 { 0 , ARG_STACKSIZ, NULL, "sets the size if the argument passing stack (default: 16, minimum: 4)" },
64 { 0 , NULL, NULL, NULL }
67 void pCodeInitRegisters(void);
69 void pic14_assignRegisters (ebbIndex *);
71 /* Also defined in gen.h, but the #include is commented out */
72 /* for an unknowned reason. - EEP */
73 void pic14_emitDebuggerSymbol (char *);
75 static int regParmFlg = 0; /* determine if we can register a parameter */
80 asm_addTree (&asm_asxxxx_mapping);
81 memset (&pic14_options, 0, sizeof (pic14_options));
85 _pic14_reset_regparm (void)
91 _pic14_regparm (sym_link * l, bool reentrant)
93 /* for this processor it is simple
94 can pass only the first parameter in a register */
103 _process_pragma(const char *sz)
106 static const char *WHITE = " \t";
107 char *ptr = strtok((char *)sz, WHITE);
112 extern char *udata_section_name;
115 _pic14_parseOptions (int *pargc, char **argv, int *i)
119 /* TODO: allow port-specific command line options to specify
120 * segment names here.
123 /* This is a temporary hack, to solve problems with some processors
124 * that do not have udata section. It will be changed when a more
125 * robust solution is figured out -- VR 27-11-2003 FIXME
127 strcpy(buf, "--udata-section-name");
128 if(!strncmp(buf, argv[ *i ], strlen(buf))) {
129 if(strlen(argv[ *i ]) <= strlen(buf)+1) {
130 fprintf(stderr, "WARNING: no `%s' entered\n", buf+2);
133 udata_section_name = strdup( strchr(argv[*i], '=') + 1 );
141 extern set *dataDirsSet;
142 extern set *includeDirsSet;
143 /* pic14 port uses include/pic and lib/pic instead of
144 * include/pic14 and lib/pic14 as indicated by SDCCmain.c's
145 * setIncludePaths routine. */
147 _pic14_initPaths (void)
153 if (options.nostdinc)
156 tempSet = appendStrSet(dataDirsSet, NULL, INCLUDE_DIR_SUFFIX DIR_SEPARATOR_STRING "pic");
157 mergeSets(&includeDirsSet, tempSet);
159 if ((p = getenv(SDCC_INCLUDE_NAME)) != NULL)
161 addSetHead(&includeDirsSet, p);
162 p2=Safe_alloc(strlen(p)+strlen(DIR_SEPARATOR_STRING)+strlen("pic")+1);
166 strcat(p2, DIR_SEPARATOR_STRING);
168 addSetHead(&includeDirsSet, p2);
174 _pic14_finaliseOptions (void)
176 pCodeInitRegisters();
178 port->mem.default_local_map = data;
179 port->mem.default_globl_map = data;
181 /* Hack-o-matic: if we are using the flat24 model,
182 * adjust pointer sizes.
184 if (options.model == MODEL_FLAT24)
187 fprintf (stderr, "*** WARNING: you should use the '-mds390' option "
188 "for DS80C390 support. This code generator is "
189 "badly out of date and probably broken.\n");
191 port->s.fptr_size = 3;
192 port->s.gptr_size = 4;
193 port->stack.isr_overhead++; /* Will save dpx on ISR entry. */
195 port->stack.call_overhead++; /* This acounts for the extra byte
196 * of return addres on the stack.
197 * but is ugly. There must be a
201 fReturn = fReturn390;
205 if (options.model == MODEL_LARGE)
207 port->mem.default_local_map = xdata;
208 port->mem.default_globl_map = xdata;
212 port->mem.default_local_map = data;
213 port->mem.default_globl_map = data;
216 if (options.stack10bit)
218 if (options.model != MODEL_FLAT24)
221 "*** warning: 10 bit stack mode is only supported in flat24 model.\n");
222 fprintf (stderr, "\t10 bit stack mode disabled.\n");
223 options.stack10bit = 0;
227 /* Fixup the memory map for the stack; it is now in
228 * far space and requires a FPOINTER to access it.
231 istack->ptrType = FPOINTER;
238 _pic14_setDefaultOptions (void)
243 _pic14_getRegName (struct regs *reg)
250 extern char *processor_base_name(void);
253 _pic14_genAssemblerPreamble (FILE * of)
255 char * name = processor_base_name();
260 fprintf(stderr,"WARNING: No Pic has been selected, defaulting to %s\n",name);
263 fprintf (of, "\tlist\tp=%s\n",name);
264 fprintf (of, "\tradix dec\n");
265 fprintf (of, "\tinclude \"p%s.inc\"\n",name);
268 /* Generate interrupt vector table. */
270 _pic14_genIVT (FILE * of, symbol ** interrupts, int maxInterrupts)
274 if (options.model != MODEL_FLAT24)
276 /* Let the default code handle it. */
280 fprintf (of, "\t;ajmp\t__sdcc_gsinit_startup\n");
282 /* now for the other interrupts */
283 for (i = 0; i < maxInterrupts; i++)
287 fprintf (of, "\t;ljmp\t%s\n\t.ds\t4\n", interrupts[i]->rname);
291 fprintf (of, "\t;reti\n\t.ds\t7\n");
299 _hasNativeMulFor (iCode *ic, sym_link *left, sym_link *right)
302 sym_link *test = NULL;
306 //fprintf(stderr,"checking for native mult\n");
313 /* multiply chars in-place */
314 if (getSize(left) == 1 && getSize(right) == 1)
317 /* use library functions for more complex maths */
321 if ( IS_LITERAL (left))
323 fprintf(stderr,"left is lit\n");
325 val = OP_VALUE (IC_LEFT (ic));
327 else if ( IS_LITERAL (right))
329 fprintf(stderr,"right is lit\n");
331 val = OP_VALUE (IC_RIGHT (ic));
335 fprintf(stderr,"oops, neither is lit so no\n");
339 if ( getSize (test) <= 2)
341 fprintf(stderr,"yep\n");
344 fprintf(stderr,"nope\n");
350 /* Indicate which extended bit operations this port supports */
352 hasExtBitOp (int op, int size)
356 /* || op == GETHBIT */ /* GETHBIT doesn't look complete for PIC */
363 /* Indicate the expense of an access to an output storage class */
365 oclsExpense (struct memmap *oclass)
367 /* The IN_FARSPACE test is compatible with historical behaviour, */
368 /* but I don't think it is applicable to PIC. If so, please feel */
369 /* free to remove this test -- EEP */
370 if (IN_FARSPACE(oclass))
376 /** $1 is always the basename.
377 $2 is always the output file.
379 $l is the list of extra options that should be there somewhere...
380 MUST be terminated with a NULL.
382 static const char *_linkCmd[] =
384 "gplink", "$l", "-w", "-r", "-o \"$2\"", "\"$1\"", "$3", NULL
387 static const char *_asmCmd[] =
389 "gpasm", "$l", "-c", "\"$1.asm\"", NULL
393 extern set *libFilesSet;
394 extern set *libDirsSet;
395 extern set *libPathsSet;
396 extern set *includeDirsSet;
397 extern set *userIncDirsSet;
398 extern set *dataDirsSetSet;
399 extern set *relFilesSet;
400 extern set *linkOptionsSet;
402 static void _pic14_do_link (void)
404 hTab *linkValues=NULL;
413 * link command format:
414 * {linker} {incdirs} {lflags} -o {outfile} {spec_ofiles} {ofiles} {libs}
418 sprintf(lfrm, "{linker} {incdirs} {sysincdirs} {lflags} -w -r -o {outfile} {user_ofile} {spec_ofiles} {ofiles} {libs}");
420 shash_add(&linkValues, "linker", "gplink");
422 /* LIBRARY SEARCH DIRS */
423 mergeSets(&tSet, libPathsSet);
424 mergeSets(&tSet, libDirsSet);
425 shash_add(&linkValues, "incdirs", joinStrSet(appendStrSet(tSet, "-I\"", "\"")));
427 SNPRINTF (&temp[0], 128, "%cpic\"", DIR_SEPARATOR_CHAR);
428 joinStrSet(appendStrSet(libDirsSet, "-I\"", &temp[0]));
429 shash_add(&linkValues, "sysincdirs", joinStrSet(appendStrSet(libDirsSet, "-I\"", &temp[0])));
431 shash_add(&linkValues, "lflags", joinStrSet(linkOptionsSet));
433 shash_add(&linkValues, "outfile", fullDstFileName ? fullDstFileName : dstFileName);
435 if(fullSrcFileName) {
436 sprintf(temp, "%s.o", fullDstFileName ? fullDstFileName : dstFileName );
437 shash_add(&linkValues, "user_ofile", temp);
440 shash_add(&linkValues, "ofiles", joinStrSet(relFilesSet));
443 procName = processor_base_name();
448 addSet(&libFilesSet, "libsdcc.lib");
449 SNPRINTF(&temp[0], 128, "pic%s.lib", procName);
450 addSet(&libFilesSet, temp);
451 shash_add(&linkValues, "libs", joinStrSet(libFilesSet));
453 lcmd = msprintf(linkValues, lfrm);
455 ret = my_system( lcmd );
468 "MCU pic", /* Target name */
472 TRUE, /* Emit glue around main */
473 MODEL_SMALL | MODEL_LARGE | MODEL_FLAT24,
481 //"-plosgffc", /* Options with debug */
482 //"-plosgff", /* Options without debug */
485 NULL /* no do_assemble function */
490 _pic14_do_link, /* own do link function */
498 /* Sizes: char, short, int, long, ptr, fptr, gptr, bit, float, max */
499 1, 2, 2, 4, 2, 2, 3, 1, 4, 4
500 /* TSD - I changed the size of gptr from 3 to 1. However, it should be
501 2 so that we can accomodate the PIC's with 4 register banks (like the
505 /* tags for generic pointers */
506 { 0x00, 0x00, 0x00, 0x80 }, /* far, near, xstack, code */
523 "CONST (CODE)", // const_name - const data (code or not)
524 "CABS (ABS,CODE)", // cabs_name - const absolute data (code or not)
527 1 // code is read only
533 /* pic14 has an 8 bit mul */
538 pic14_emitDebuggerSymbol
541 255/3, /* maxCount */
542 3, /* sizeofElement */
543 /* The rest of these costs are bogus. They approximate */
544 /* the behavior of src/SDCCicode.c 1.207 and earlier. */
545 {4,4,4}, /* sizeofMatchJump[] */
546 {0,0,0}, /* sizeofRangeCompare[] */
547 0, /* sizeofSubtract */
548 3, /* sizeofDispatch */
555 _pic14_finaliseOptions,
556 _pic14_setDefaultOptions,
557 pic14_assignRegisters,
560 _pic14_genAssemblerPreamble,
561 NULL, /* no genAssemblerEnd */
563 NULL, // _pic14_genXINIT
564 NULL, /* genInitStartup */
565 _pic14_reset_regparm,
567 _process_pragma, /* process a pragma */
570 hasExtBitOp, /* hasExtBitOp */
571 oclsExpense, /* oclsExpense */
573 // TRUE, /* little endian */
574 FALSE, /* little endian - PIC code enumlates big endian */
577 1, /* transform <= to ! > */
578 1, /* transform >= to ! < */
579 1, /* transform != to !(a == b) */
581 FALSE, /* No array initializer support. */
582 0, /* no CSE cost estimation yet */
583 NULL, /* no builtin functions */
584 GPOINTER, /* treat unqualified pointers as "generic" pointers */
585 1, /* reset labelKey to 1 */
586 1, /* globals & local static allowed */