-/** @file main.c
- pic16 specific general functions.
+/*-------------------------------------------------------------------------
+
+ main.c - pic16 specific general functions.
+
+ Written by - Scott Dattalo scott@dattalo.com
+ Ported to PIC16 by - Martin Dubuc m.debuc@rogers.com
+
+ Note that mlh prepended _pic16_ on the static functions. Makes
+ it easier to set a breakpoint using the debugger.
+
+
+ This program is free software; you can redistribute it and/or modify it
+ under the terms of the GNU General Public License as published by the
+ Free Software Foundation; either version 2, or (at your option) any
+ later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+-------------------------------------------------------------------------*/
- Note that mlh prepended _pic16_ on the static functions. Makes
- it easier to set a breakpoint using the debugger.
-*/
#include "common.h"
#include "main.h"
#include "ralloc.h"
#include "device.h"
#include "SDCCutil.h"
+#include "glue.h"
+#include "pcode.h"
//#include "gen.h"
#include "peeph.rul"
};
-/* list of key words used by msc51 */
+/* list of key words used by pic16 */
static char *_pic16_keywords[] =
{
"at",
"bit",
"code",
"critical",
+ "register",
"data",
"far",
"idata",
"_xdata",
"_pdata",
"_idata",
+ "_naked",
NULL
};
+
+pic16_sectioninfo_t pic16_sectioninfo;
+
+
+extern char *pic16_processor_base_name(void);
+
void pic16_pCodeInitRegisters(void);
void pic16_assignRegisters (eBBlock ** ebbs, int count);
static int regParmFlg = 0; /* determine if we can register a parameter */
+pic16_options_t pic16_options;
+
+extern set *includeDirsSet;
+extern set *dataDirsSet;
+extern set *libFilesSet;
+
+/* Also defined in gen.h, but the #include is commented out */
+/* for an unknowned reason. - EEP */
+void pic16_emitDebuggerSymbol (char *);
+
+extern regs* newReg(short type, short pc_type, int rIdx, char *name, int size, int alias, operand *refop);
+extern void pic16_emitConfigRegs(FILE *of);
+extern void pic16_emitIDRegs(FILE *of);
+
+
+
static void
_pic16_init (void)
{
asm_addTree (&asm_asxxxx_mapping);
pic16_pCodeInitRegisters();
+ maxInterrupts = 2;
}
static void
-_pic16_reset_regparm ()
+_pic16_reset_regparm (void)
{
regParmFlg = 0;
}
static int
_pic16_regparm (sym_link * l)
{
- /* for this processor it is simple
- can pass only the first parameter in a register */
- //if (regParmFlg)
- // return 0;
-
- regParmFlg++;// = 1;
- return 1;
+ /* force all parameters via SEND/RECEIVE */
+ if(0 /*pic16_options.ip_stack*/) {
+ /* for this processor it is simple
+ * can pass only the first parameter in a register */
+ if(regParmFlg)return 0;
+ regParmFlg++;
+ return 1; //regParmFlg;
+ } else {
+ /* otherwise pass all arguments in registers via SEND/RECEIVE */
+ regParmFlg++;// = 1;
+ return regParmFlg;
+ }
}
+
+int initsfpnt=0; /* set to 1 if source provides a pragma for stack
+ * so glue() later emits code to initialize stack/frame pointers */
+set *absSymSet;
+
+set *sectNames=NULL; /* list of section listed in pragma directives */
+set *sectSyms=NULL; /* list of symbols set in a specific section */
+
+
static int
_process_pragma(const char *sz)
{
- static const char *WHITE = " \t";
+ static const char *WHITE = " \t\n";
+
char *ptr = strtok((char *)sz, WHITE);
- if (startsWith (ptr, "memmap"))
- {
- char *start;
- char *end;
- char *type;
- char *alias;
-
- start = strtok((char *)NULL, WHITE);
- end = strtok((char *)NULL, WHITE);
- type = strtok((char *)NULL, WHITE);
- alias = strtok((char *)NULL, WHITE);
-
- if (start != (char *)NULL
- && end != (char *)NULL
- && type != (char *)NULL) {
- value *startVal = constVal(start);
- value *endVal = constVal(end);
- value *aliasVal;
- memRange r;
-
- if (alias == (char *)NULL) {
- aliasVal = constVal(0);
- } else {
- aliasVal = constVal(alias);
- }
+ /* #pragma maxram [maxram] */
+ if (startsWith (ptr, "maxram")) {
+ char *maxRAM = strtok((char *)NULL, WHITE);
- r.start_address = (int)floatFromVal(startVal);
- r.end_address = (int)floatFromVal(endVal);
- r.alias = (int)floatFromVal(aliasVal);
- r.bank = (r.start_address >> 7) & 0xf;
-
- if (strcmp(type, "RAM") == 0) {
- pic16_addMemRange(&r, 0);
- } else if (strcmp(type, "SFR") == 0) {
- pic16_addMemRange(&r, 1);
- } else {
- return 1;
- }
- }
+ if (maxRAM != (char *)NULL) {
+ int maxRAMaddress;
+ value *maxRAMVal;
- return 0;
- } else if (startsWith (ptr, "maxram")) {
- char *maxRAM = strtok((char *)NULL, WHITE);
+ maxRAMVal = constVal(maxRAM);
+ maxRAMaddress = (int)floatFromVal(maxRAMVal);
+ pic16_setMaxRAM(maxRAMaddress);
+ }
- if (maxRAM != (char *)NULL) {
- int maxRAMaddress;
- value *maxRAMVal;
+ return 0;
+ }
+
+ /* #pragma stack [stack-position] [stack-len] */
+ if(startsWith(ptr, "stack")) {
+ char *stackPosS = strtok((char *)NULL, WHITE);
+ char *stackLenS = strtok((char *)NULL, WHITE);
+ value *stackPosVal;
+ value *stackLenVal;
+ regs *reg;
+ symbol *sym;
+
+ stackPosVal = constVal( stackPosS );
+ stackPos = (unsigned int)floatFromVal( stackPosVal );
+
+
+ if(stackLenS) {
+ stackLenVal = constVal( stackLenS );
+ stackLen = (unsigned int)floatFromVal( stackLenVal );
+ }
+
+ if(stackLen < 1) {
+ stackLen = 64;
+ fprintf(stderr, "%s:%d: warning: setting stack to default size %d (0x%04x)\n",
+ filename, lineno-1, stackLen, stackLen);
+
+// fprintf(stderr, "%s:%d setting stack to default size %d\n", __FILE__, __LINE__, stackLen);
+ }
+
+// fprintf(stderr, "Initializing stack pointer at 0x%x len 0x%x\n", stackPos, stackLen);
+
+ reg=newReg(REG_SFR, PO_SFR_REGISTER, stackPos, "_stack", stackLen-1, 0, NULL);
+ addSet(&pic16_fix_udata, reg);
+
+ reg = newReg(REG_SFR, PO_SFR_REGISTER, stackPos + stackLen-1, "_stack_end", 1, 0, NULL);
+ addSet(&pic16_fix_udata, reg);
+
+ sym = newSymbol("stack", 0);
+ sprintf(sym->rname, "_%s", sym->name);
+ addSet(&publics, sym);
+
+ sym = newSymbol("stack_end", 0);
+ sprintf(sym->rname, "_%s", sym->name);
+ addSet(&publics, sym);
+
+ initsfpnt = 1; // force glue() to initialize stack/frame pointers */
+
+ return 0;
+ }
+
+ /* #pragma code [symbol] [location] */
+ if(startsWith(ptr, "code")) {
+ char *symname = strtok((char *)NULL, WHITE);
+ char *location = strtok((char *)NULL, WHITE);
+ absSym *absS;
+ value *addr;
+
+ absS = Safe_calloc(1, sizeof(absSym));
+ sprintf(absS->name, "_%s", symname);
+
+ addr = constVal( location );
+ absS->address = (unsigned int)floatFromVal( addr );
+
+ if((absS->address % 2) != 0) {
+ absS->address--;
+ fprintf(stderr, "%s:%d: warning: code memory locations should be word aligned, will locate to 0x%06x instead\n",
+ filename, lineno-1, absS->address);
+ }
+
+ addSet(&absSymSet, absS);
+// fprintf(stderr, "%s:%d symbol %s will be placed in location 0x%06x in code memory\n",
+// __FILE__, __LINE__, symname, absS->address);
+
+ return 0;
+ }
- maxRAMVal = constVal(maxRAM);
- maxRAMaddress = (int)floatFromVal(maxRAMVal);
- pic16_setMaxRAM(maxRAMaddress);
- }
+ /* #pragma udata [section-name] [symbol] */
+ if(startsWith(ptr, "udata")) {
+ char *sectname = strtok((char *)NULL, WHITE);
+ char *symname = strtok((char *)NULL, WHITE);
+ symbol *nsym;
+ sectSym *ssym;
+ sectName *snam;
+ int found=0;
+
+ while(symname) {
+ ssym = Safe_calloc(1, sizeof(sectSyms));
+ ssym->name = Safe_calloc(1, strlen(symname)+2);
+ sprintf(ssym->name, "_%s", symname);
+ ssym->reg = NULL;
+
+ addSet(§Syms, ssym);
+
+ nsym = newSymbol(symname, 0);
+ strcpy(nsym->rname, ssym->name);
+ checkAddSym(&publics, nsym);
+
+ found = 0;
+ for(snam=setFirstItem(sectNames);snam;snam=setNextItem(sectNames)) {
+ if(!strcmp(sectname, snam->name)){ found=1; break; }
+ }
+
+ if(!found) {
+ snam = Safe_calloc(1, sizeof(sectNames));
+ snam->name = Safe_strdup( sectname );
+ snam->regsSet = NULL;
+
+ addSet(§Names, snam);
+ }
+
+ ssym->section = snam;
+
+// fprintf(stderr, "%s:%d placing symbol %s at section %s (%p)\n", __FILE__, __LINE__,
+// ssym->name, snam->name, snam);
+
+ symname = strtok((char *)NULL, WHITE);
+ }
+
+ return 0;
+ }
- return 0;
- }
return 1;
}
+#define REP_UDATA "--preplace-udata-with="
+
+#define STACK_MODEL "--pstack-model="
+#define OPT_BANKSEL "--obanksel="
+
+#define ALT_ASM "--asm="
+#define ALT_LINK "--link="
+
+#define IVT_LOC "--ivt-loc"
+#define NO_DEFLIBS "--nodefaultlibs"
+#define MPLAB_COMPAT "--mplab-comp"
+
+#define NL_OPT "--nl="
+#define USE_CRT "--use-crt="
+
+char *alt_asm=NULL;
+char *alt_link=NULL;
+
+int pic16_mplab_comp=0;
+extern int pic16_debug_verbose;
+extern int pic16_ralloc_debug;
+extern int pic16_pcode_verbose;
+
+int pic16_fstack=0;
+int pic16_enable_peeps=0;
+int pic16_nl=0; /* 0 for LF, 1 for CRLF */
+
+OPTION pic16_optionsTable[]= {
+ { 0, NO_DEFLIBS, &pic16_options.nodefaultlibs, "do not link default libraries when linking"},
+ { 0, "--pno-banksel", &pic16_options.no_banksel, "do not generate BANKSEL assembler directives"},
+ { 0, OPT_BANKSEL, NULL, "set banksel optimization level (default=0 no)"},
+ { 0, "--pomit-config-words", &pic16_options.omit_configw, "omit the generation of configuration words"},
+ { 0, "--pomit-ivt", &pic16_options.omit_ivt, "omit the generation of the Interrupt Vector Table"},
+ { 0, "--pleave-reset-vector",&pic16_options.leave_reset, "when omitting IVT leave RESET vector"},
+ { 0, STACK_MODEL, NULL, "use stack model 'small' (default) or 'large'"},
+
+ { 0, "--debug-xtra", &pic16_debug_verbose, "show more debug info in assembly output"},
+ { 0, "--debug-ralloc", &pic16_ralloc_debug, "dump register allocator debug file *.d"},
+ { 0, "--pcode-verbose", &pic16_pcode_verbose, "dump pcode related info"},
+
+ { 0, REP_UDATA, NULL, "Place udata variables at another section: udata_acs, udata_ovr, udata_shr"},
+
+ { 0, ALT_ASM, NULL, "Use alternative assembler"},
+ { 0, ALT_LINK, NULL, "Use alternative linker"},
+
+ { 0, "--denable-peeps", &pic16_enable_peeps, "explicit enable of peepholes"},
+ { 0, IVT_LOC, NULL, "<nnnn> interrupt vector table location"},
+ { 0, "--calltree", &pic16_options.dumpcalltree, "dump call tree in .calltree file"},
+ { 0, MPLAB_COMPAT, &pic16_mplab_comp, "enable compatibility mode for MPLAB utilities (MPASM/MPLINK)"},
+ { 0, "--fstack", &pic16_fstack, "enable stack optimizations"},
+ { 0, NL_OPT, NULL, "new line, \"lf\" or \"crlf\""},
+ { 0, USE_CRT, NULL, "use <crt-o> run-time initialization module"},
+ { 0, "--no-crt", &pic16_options.no_crt, "do not link any default run-time initialization module"},
+ { 0, NULL, NULL, NULL}
+ };
+
+
+#define ISOPT(str) !strncmp(argv[ *i ], str, strlen(str) )
+
+extern char *getStringArg(const char *, char **, int *, int);
+extern int getIntArg(const char *, char **, int *, int);
+
static bool
_pic16_parseOptions (int *pargc, char **argv, int *i)
{
+ int j=0;
+ char *stkmodel;
+
/* TODO: allow port-specific command line options to specify
* segment names here.
*/
+ /* check for arguments that have associated an integer variable */
+ while(pic16_optionsTable[j].pparameter) {
+ if(ISOPT( pic16_optionsTable[j].longOpt )) {
+ (*pic16_optionsTable[j].pparameter)++;
+ return TRUE;
+ }
+ j++;
+ }
+
+
+ if(ISOPT(STACK_MODEL)) {
+ stkmodel = getStringArg(STACK_MODEL, argv, i, *pargc);
+ if(!STRCASECMP(stkmodel, "small"))pic16_options.stack_model = 0;
+ else if(!STRCASECMP(stkmodel, "large"))pic16_options.stack_model = 1;
+ else {
+ fprintf(stderr, "Unknown stack model: %s", stkmodel);
+ exit(-1);
+ }
+ return TRUE;
+ }
+
+ if(ISOPT(OPT_BANKSEL)) {
+ pic16_options.opt_banksel = getIntArg(OPT_BANKSEL, argv, i, *pargc);
+ return TRUE;
+ }
+
+ if(ISOPT(REP_UDATA)) {
+ pic16_sectioninfo.at_udata = Safe_strdup(getStringArg(REP_UDATA, argv, i, *pargc));
+ return TRUE;
+ }
+
+ if(ISOPT(ALT_ASM)) {
+ alt_asm = Safe_strdup(getStringArg(ALT_ASM, argv, i, *pargc));
+ return TRUE;
+ }
+
+ if(ISOPT(ALT_LINK)) {
+ alt_link = Safe_strdup(getStringArg(ALT_LINK, argv, i, *pargc));
+ return TRUE;
+ }
+
+ if(ISOPT(IVT_LOC)) {
+ pic16_options.ivt_loc = getIntArg(IVT_LOC, argv, i, *pargc);
+ return TRUE;
+ }
+
+ if(ISOPT(NL_OPT)) {
+ char *tmp;
+
+ tmp = Safe_strdup( getStringArg(NL_OPT, argv, i, *pargc) );
+ if(!STRCASECMP(tmp, "lf"))pic16_nl = 0;
+ else if(!STRCASECMP(tmp, "crlf"))pic16_nl = 1;
+ else {
+ fprintf(stderr, "invalid termination character id\n");
+ exit(-1);
+ }
+ return TRUE;
+ }
+
+ if(ISOPT(USE_CRT)) {
+ pic16_options.no_crt = 0;
+ pic16_options.crt_name = Safe_strdup( getStringArg(USE_CRT, argv, i, *pargc) );
+
+ return TRUE;
+ }
+
return FALSE;
}
+extern set *userIncDirsSet;
+
+static void _pic16_initPaths(void)
+{
+ char pic16incDir[512];
+ char pic16libDir[512];
+ set *pic16incDirsSet=NULL;
+ set *pic16libDirsSet=NULL;
+ char devlib[512];
+
+ setMainValue("mcu", pic16->name[2] );
+ addSet(&preArgvSet, Safe_strdup("-D{mcu}"));
+
+ sprintf(pic16incDir, "%s%cpic16", INCLUDE_DIR_SUFFIX, DIR_SEPARATOR_CHAR);
+ sprintf(pic16libDir, "%s%cpic16", LIB_DIR_SUFFIX, DIR_SEPARATOR_CHAR);
+
+
+ if(!options.nostdinc) {
+ /* setup pic16 include directory */
+ pic16incDirsSet = appendStrSet(dataDirsSet, NULL, pic16incDir);
+ includeDirsSet = pic16incDirsSet;
+// mergeSets(&includeDirsSet, pic16incDirsSet);
+ }
+ /* pic16 port should not search to the SDCC standard include directories,
+ * so add here the deleted include dirs that user has issued in command line */
+ mergeSets(&pic16incDirsSet, userIncDirsSet);
+
+ if(!options.nostdlib) {
+ /* setup pic16 library directory */
+ pic16libDirsSet = appendStrSet(dataDirsSet, NULL, pic16libDir);
+ libDirsSet = pic16libDirsSet;
+// mergeSets(&libDirsSet, pic16libDirsSet);
+ }
+
+ if(!pic16_options.nodefaultlibs) {
+ /* now add the library for the device */
+ sprintf(devlib, "%s.lib", pic16->name[2]);
+ addSet(&libFilesSet, Safe_strdup(devlib));
+
+ /* add the internal SDCC library */
+ addSet(&libFilesSet, Safe_strdup( "libsdcc.lib" ));
+ }
+}
+
+extern set *linkOptionsSet;
+char *msprintf(hTab *pvals, const char *pformat, ...);
+int my_system(const char *cmd);
+
+/* custom function to link objects */
+static void _pic16_linkEdit(void)
+{
+ hTab *linkValues=NULL;
+ char lfrm[256];
+ char *lcmd;
+ char temp[128];
+ set *tSet=NULL;
+ int ret;
+
+ /*
+ * link command format:
+ * {linker} {incdirs} {lflags} -o {outfile} {spec_ofiles} {ofiles} {libs}
+ *
+ */
+
+ sprintf(lfrm, "{linker} {incdirs} {lflags} -o {outfile} {user_ofile} {spec_ofiles} {ofiles} {libs}");
+
+ shash_add(&linkValues, "linker", "gplink");
+
+ mergeSets(&tSet, libDirsSet);
+ mergeSets(&tSet, libPathsSet);
+
+ shash_add(&linkValues, "incdirs", joinStrSet( appendStrSet(tSet, "-I\"", "\"")));
+ shash_add(&linkValues, "lflags", joinStrSet(linkOptionsSet));
+
+ shash_add(&linkValues, "outfile", dstFileName);
+
+ if(fullSrcFileName) {
+ sprintf(temp, "%s.o", dstFileName);
+// addSetHead(&relFilesSet, Safe_strdup(temp));
+ shash_add(&linkValues, "user_ofile", temp);
+ }
+
+ if(!pic16_options.no_crt)
+ shash_add(&linkValues, "spec_ofiles", pic16_options.crt_name);
+
+ shash_add(&linkValues, "ofiles", joinStrSet(relFilesSet));
+ shash_add(&linkValues, "libs", joinStrSet(libFilesSet));
+
+ lcmd = msprintf(linkValues, lfrm);
+
+ ret = my_system( lcmd );
+
+ Safe_free( lcmd );
+
+ if(ret)
+ exit(1);
+}
+
+
+/* forward declarations */
+extern const char *pic16_linkCmd[];
+extern const char *pic16_asmCmd[];
+
static void
_pic16_finaliseOptions (void)
{
+ port->mem.default_local_map = data;
+ port->mem.default_globl_map = data;
- port->mem.default_local_map = data;
- port->mem.default_globl_map = data;
-#if 0
- /* Hack-o-matic: if we are using the flat24 model,
- * adjust pointer sizes.
- */
- if (options.model == MODEL_FLAT24)
- {
+ /* peepholes are disabled for the time being */
+ options.nopeep = 1;
- fprintf (stderr, "*** WARNING: you should use the '-mds390' option "
- "for DS80C390 support. This code generator is "
- "badly out of date and probably broken.\n");
+ /* explicit enable peepholes for testing */
+ if(pic16_enable_peeps)
+ options.nopeep = 0;
- port->s.fptr_size = 3;
- port->s.gptr_size = 4;
- port->stack.isr_overhead++; /* Will save dpx on ISR entry. */
-#if 1
- port->stack.call_overhead++; /* This acounts for the extra byte
- * of return addres on the stack.
- * but is ugly. There must be a
- * better way.
- */
+ options.all_callee_saves = 1; // always callee saves
+
+#if 0
+ options.float_rent = 1;
+ options.intlong_rent = 1;
#endif
- fReturn = fReturn390;
- fReturnSize = 5;
+
+
+ if(alt_asm && strlen(alt_asm))
+ pic16_asmCmd[0] = alt_asm;
+
+ if(alt_link && strlen(alt_link))
+ pic16_linkCmd[0] = alt_link;
+
+ if(!pic16_options.no_crt) {
+ pic16_options.omit_ivt = 1;
+ pic16_options.leave_reset = 0;
}
+}
+
+#if 0
if (options.model == MODEL_LARGE)
{
port->mem.default_local_map = xdata;
}
}
#endif
-}
+
static void
_pic16_setDefaultOptions (void)
{
+ options.stackAuto = 0; /* implicit declaration */
+ /* port is not capable yet to allocate separate registers
+ * dedicated for passing certain parameters */
+
+ /* initialize to defaults section locations, names and addresses */
+ pic16_sectioninfo.at_udata = "udata";
+
+ /* set pic16 port options to defaults */
+ pic16_options.no_banksel = 0;
+ pic16_options.opt_banksel = 0;
+ pic16_options.omit_configw = 0;
+ pic16_options.omit_ivt = 0;
+ pic16_options.leave_reset = 0;
+ pic16_options.stack_model = 0; /* 0 for 'small', 1 for 'large' */
+ pic16_options.ivt_loc = 0x000000;
+ pic16_options.nodefaultlibs = 0;
+ pic16_options.dumpcalltree = 0;
+ pic16_options.crt_name = "crt0i.o"; /* the default crt to link */
+ pic16_options.no_crt = 0; /* use crt by default */
+ pic16_options.ip_stack = 1; /* set to 1 to enable ipop/ipush for stack */
}
static const char *
return "err";
}
-extern char *pic16_processor_base_name(void);
+
+#if 1
+static char *_pic16_mangleFunctionName(char *sz)
+{
+// fprintf(stderr, "mangled function name: %s\n", sz);
+
+ return sz;
+}
+#endif
+
static void
_pic16_genAssemblerPreamble (FILE * of)
{
- char * name = pic16_processor_base_name();
+ char *name = pic16_processor_base_name();
- if(!name) {
+ if(!name) {
+ name = "p18f452";
+ fprintf(stderr,"WARNING: No Pic has been selected, defaulting to %s\n",name);
+ }
- name = "p18f452";
- fprintf(stderr,"WARNING: No Pic has been selected, defaulting to %s\n",name);
- }
+ fprintf (of, "\tlist\tp=%s\n",&name[1]);
- fprintf (of, "\tlist\tp=%s\n",&name[1]);
- fprintf (of, "\tinclude \"%s.inc\"\n",name);
- fprintf (of, "\t__config _CONFIG1H,0x%x\n",pic16_getConfigWord(0x300001));
- fprintf (of, "\t__config _CONFIG2L,0x%x\n",pic16_getConfigWord(0x300002));
- fprintf (of, "\t__config _CONFIG2H,0x%x\n",pic16_getConfigWord(0x300003));
- fprintf (of, "\t__config _CONFIG3H,0x%x\n",pic16_getConfigWord(0x300005));
- fprintf (of, "\t__config _CONFIG4L,0x%x\n",pic16_getConfigWord(0x300006));
- fprintf (of, "\t__config _CONFIG5L,0x%x\n",pic16_getConfigWord(0x300008));
- fprintf (of, "\t__config _CONFIG5H,0x%x\n",pic16_getConfigWord(0x300009));
- fprintf (of, "\t__config _CONFIG6L,0x%x\n",pic16_getConfigWord(0x30000a));
- fprintf (of, "\t__config _CONFIG6H,0x%x\n",pic16_getConfigWord(0x30000b));
- fprintf (of, "\t__config _CONFIG7L,0x%x\n",pic16_getConfigWord(0x30000c));
- fprintf (of, "\t__config _CONFIG7H,0x%x\n",pic16_getConfigWord(0x30000d));
+ if(!pic16_options.omit_configw) {
+ pic16_emitConfigRegs(of);
+ fprintf(of, "\n");
+ pic16_emitIDRegs(of);
+ }
+
fprintf (of, "\tradix dec\n");
}
static int
_pic16_genIVT (FILE * of, symbol ** interrupts, int maxInterrupts)
{
- int i;
-
- if (options.model != MODEL_FLAT24)
- {
- /* Let the default code handle it. */
- return FALSE;
- }
-
- fprintf (of, "\t;ajmp\t__sdcc_gsinit_startup\n");
+#if 1
+ /* PIC18F family has only two interrupts, the high and the low
+ * priority interrupts, which reside at 0x0008 and 0x0018 respectively - VR */
- /* now for the other interrupts */
- for (i = 0; i < maxInterrupts; i++)
- {
- if (interrupts[i])
- {
- fprintf (of, "\t;ljmp\t%s\n\t.ds\t4\n", interrupts[i]->rname);
+ if((!pic16_options.omit_ivt) || (pic16_options.omit_ivt && pic16_options.leave_reset)) {
+ fprintf(of, "; RESET vector\n");
+ fprintf(of, "\tgoto\t__sdcc_gsinit_startup\n");
}
- else
- {
- fprintf (of, "\t;reti\n\t.ds\t7\n");
+
+ if(!pic16_options.omit_ivt) {
+ fprintf(of, "\tres 4\n");
+
+
+ fprintf(of, "; High priority interrupt vector 0x0008\n");
+ if(interrupts[1]) {
+ fprintf(of, "\tgoto\t%s\n", interrupts[1]->rname);
+ fprintf(of, "\tres\t12\n");
+ } else {
+ fprintf(of, "\tretfie\n");
+ fprintf(of, "\tres\t14\n");
+ }
+
+ fprintf(of, "; Low priority interrupt vector 0x0018\n");
+ if(interrupts[2]) {
+ fprintf(of, "\tgoto\t%s\n", interrupts[2]->rname);
+ } else {
+ fprintf(of, "\tretfie\n");
+ }
}
- }
-
+#endif
return TRUE;
}
-static bool
-_hasNativeMulFor (iCode *ic, sym_link *left, sym_link *right)
+/* return True if the port can handle the type,
+ * False to convert it to function call */
+static bool _hasNativeMulFor (iCode *ic, sym_link *left, sym_link *right)
{
- sym_link *test = NULL;
- value *val;
+// fprintf(stderr,"checking for native mult for %c (size: %d)\n", ic->op, getSize(OP_SYMBOL(IC_RESULT(ic))->type));
- fprintf(stderr,"checking for native mult\n");
+#if 1
+ /* multiplication is fixed */
+ /* support mul for char/int/long */
+ if((ic->op == '*')
+ && (getSize(OP_SYMBOL(IC_LEFT(ic))->type ) < 2))return TRUE;
+#endif
- if ( ic->op != '*')
- {
- return FALSE;
- }
+#if 0
+ /* support div for char/int/long */
+ if((getSize(OP_SYMBOL(IC_LEFT(ic))->type ) < 0)
+ && (ic->op == '/'))return TRUE;
+#endif
+
+ return FALSE;
+}
- return TRUE;
-/*
- if ( IS_LITERAL (left))
- {
- fprintf(stderr,"left is lit\n");
- test = left;
- val = OP_VALUE (IC_LEFT (ic));
- }
- else if ( IS_LITERAL (right))
- {
- fprintf(stderr,"right is lit\n");
- test = left;
- val = OP_VALUE (IC_RIGHT (ic));
- }
- else
- {
- fprintf(stderr,"oops, neither is lit so no\n");
- return FALSE;
- }
- if ( getSize (test) <= 2)
- {
- fprintf(stderr,"yep\n");
- return TRUE;
+#if 0
+/* Do CSE estimation */
+static bool cseCostEstimation (iCode *ic, iCode *pdic)
+{
+// operand *result = IC_RESULT(ic);
+// sym_link *result_type = operandType(result);
+
+
+ /* VR -- this is an adhoc. Put here after conversation
+ * with Erik Epetrich */
+
+ if(ic->op == '<'
+ || ic->op == '>'
+ || ic->op == EQ_OP) {
+
+ fprintf(stderr, "%d %s\n", __LINE__, __FUNCTION__);
+ return 0;
+ }
+
+#if 0
+ /* if it is a pointer then return ok for now */
+ if (IC_RESULT(ic) && IS_PTR(result_type)) return 1;
+
+ /* if bitwise | add & subtract then no since mcs51 is pretty good at it
+ so we will cse only if they are local (i.e. both ic & pdic belong to
+ the same basic block */
+ if (IS_BITWISE_OP(ic) || ic->op == '+' || ic->op == '-') {
+ /* then if they are the same Basic block then ok */
+ if (ic->eBBlockNum == pdic->eBBlockNum) return 1;
+ else return 0;
}
- fprintf(stderr,"nope\n");
+#endif
- return FALSE;
-*/
+ /* for others it is cheaper to do the cse */
+ return 1;
}
+#endif
-/** $1 is always the basename.
+
+/* Indicate which extended bit operations this port supports */
+static bool
+hasExtBitOp (int op, int size)
+{
+ if (op == RRC
+ || op == RLC
+ /* || op == GETHBIT */ /* GETHBIT doesn't look complete for PIC */
+ )
+ return TRUE;
+ else
+ return FALSE;
+}
+
+/* Indicate the expense of an access to an output storage class */
+static int
+oclsExpense (struct memmap *oclass)
+{
+ /* The IN_FARSPACE test is compatible with historical behaviour, */
+ /* but I don't think it is applicable to PIC. If so, please feel */
+ /* free to remove this test -- EEP */
+ if (IN_FARSPACE(oclass))
+ return 1;
+
+ return 0;
+}
+
+/** $1 is the input object file (PIC16 specific) // >>always the basename<<.
$2 is always the output file.
- $3 varies
+ $3 -L path and -l libraries
$l is the list of extra options that should be there somewhere...
MUST be terminated with a NULL.
*/
-static const char *_linkCmd[] =
+const char *pic16_linkCmd[] =
{
- "aslink", "-nf", "$1", NULL
+ "gplink", "$l", "-o \"$2\"", "\"$1\"","$3", NULL
};
-/* Sigh. This really is not good. For now, I recommend:
- * sdcc -S -mpic16 file.c
- * the -S option does not compile or link
- */
-static const char *_asmCmd[] =
+
+
+/** $1 is always the basename.
+ $2 is always the output file.
+ $3 varies (nothing currently)
+ $l is the list of extra options that should be there somewhere...
+ MUST be terminated with a NULL.
+*/
+const char *pic16_asmCmd[] =
{
- "gpasm", "-c -I /usr/local/share/gpasm/header", "$1.asm", NULL
+ "gpasm", "$l", "$3", "-c", "\"$1.asm\"", "-o \"$2\"", NULL
};
"MCU PIC16", /* Target name */
"p18f452", /* Processor */
{
+ pic16glue,
TRUE, /* Emit glue around main */
MODEL_SMALL | MODEL_LARGE | MODEL_FLAT24,
MODEL_SMALL
},
{
- _asmCmd,
- NULL,
- NULL,
- NULL,
- //"-plosgffc", /* Options with debug */
- //"-plosgff", /* Options without debug */
- 0,
- ".asm",
+ pic16_asmCmd, /* assembler command and arguments */
+ NULL, /* alternate macro based form */
+ "-g", /* arguments for debug mode */
+ NULL, /* arguments for normal mode */
+ 0, /* print externs as global */
+ ".asm", /* assembler file extension */
NULL /* no do_assemble function */
},
{
- _linkCmd,
- NULL,
- NULL,
- ".rel"
+ NULL, // pic16_linkCmd, /* linker command and arguments */
+ NULL, /* alternate macro based form */
+ _pic16_linkEdit, //NULL, /* no do_link function */
+ ".o", /* extension for object files */
+ 0 /* no need for linker file */
},
{
_defaultRules
},
{
- /* Sizes: char, short, int, long, ptr, fptr, gptr, bit, float, max */
- 1, 2, 2, 4, 2, 2, 2, 1, 4, 4
- /* TSD - I changed the size of gptr from 3 to 1. However, it should be
- 2 so that we can accomodate the PIC's with 4 register banks (like the
- 16f877)
- */
+ /* Sizes */
+ 1, /* char */
+ 2, /* short */
+ 2, /* int */
+ 4, /* long */
+ 2, /* ptr */
+ 3, /* fptr, far pointers (see Microchip) */
+ 3, /* gptr */
+ 1, /* bit */
+ 4, /* float */
+ 4 /* max */
},
{
- "XSEG (XDATA)",
- "STACK (DATA)",
- "CSEG (CODE)",
- "DSEG (DATA)",
- "ISEG (DATA)",
- "XSEG (XDATA)",
- "BSEG (BIT)",
- "RSEG (DATA)",
- "GSINIT (CODE)",
- "OSEG (OVR,DATA)",
- "GSFINAL (CODE)",
- "HOME (CODE)",
- NULL, // xidata
- NULL, // xinit
- NULL,
- NULL,
- 1 // code is read only
+ "XSEG (XDATA)", // xstack
+ "STACK (DATA)", // istack
+ "CSEG (CODE)", // code
+ "DSEG (DATA)", // data
+ "ISEG (DATA)", // idata
+ NULL, // pdata
+ "XSEG (XDATA)", // xdata
+ "BSEG (BIT)", // bit
+ "RSEG (DATA)", // reg
+ "GSINIT (CODE)", // static
+ "OSEG (OVR,DATA)", // overlay
+ "GSFINAL (CODE)", // post static
+ "HOME (CODE)", // home
+ NULL, // xidata
+ NULL, // xinit
+ NULL, // default location for auto vars
+ NULL, // default location for global vars
+ 1 // code is read only 1=yes
},
{
- +1, 1, 4, 1, 1, 0
+ NULL, /* genExtraAreaDeclaration */
+ NULL /* genExatrAreaLinkOptions */
+ },
+ {
+ /* stack related information */
+ -1, /* -1 stack grows downwards, +1 upwards */
+ 1, /* extra overhead when calling between banks */
+ 4, /* extra overhead when the function is an ISR */
+ 1, /* extra overhead for a function call */
+ 1, /* re-entrant space */
+ 0 /* 'banked' call overhead, mild overlap with bank_overhead */
},
/* pic16 has an 8 bit mul */
{
- 1, -1
+ 0, -1
+ },
+ {
+ pic16_emitDebuggerSymbol
+ },
+ {
+ 255/3, /* maxCount */
+ 3, /* sizeofElement */
+ /* The rest of these costs are bogus. They approximate */
+ /* the behavior of src/SDCCicode.c 1.207 and earlier. */
+ {4,4,4}, /* sizeofMatchJump[] */
+ {0,0,0}, /* sizeofRangeCompare[] */
+ 0, /* sizeofSubtract */
+ 3, /* sizeofDispatch */
},
"_",
_pic16_init,
_pic16_parseOptions,
- NULL,
+ pic16_optionsTable,
+ _pic16_initPaths,
_pic16_finaliseOptions,
_pic16_setDefaultOptions,
pic16_assignRegisters,
NULL, /* no genAssemblerEnd */
_pic16_genIVT,
NULL, // _pic16_genXINIT
+ NULL, /* genInitStartup */
_pic16_reset_regparm,
_pic16_regparm,
_process_pragma, /* process a pragma */
- NULL,
+ _pic16_mangleFunctionName, /* mangles function name */
_hasNativeMulFor,
- FALSE,
+ hasExtBitOp, /* hasExtBitOp */
+ oclsExpense, /* oclsExpense */
+ FALSE,
+ TRUE, /* little endian */
0, /* leave lt */
0, /* leave gt */
1, /* transform <= to ! > */
1, /* transform != to !(a == b) */
0, /* leave == */
FALSE, /* No array initializer support. */
- 0, /* no CSE cost estimation yet */
+ 0, //cseCostEstimation, /* !!!no CSE cost estimation yet */
NULL, /* no builtin functions */
GPOINTER, /* treat unqualified pointers as "generic" pointers */
1, /* reset labelKey to 1 */
projects / fw / sdcc / blobdiff