X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=src%2Fmcs51%2Fmain.c;h=2307724fcf8286e9b5d548ca79e0165b520960ba;hb=88911079e8f9eb7fb3dfb08c32e805bb7b5e62c1;hp=20f721fe534220d8605a0fd1556ca03bc5151878;hpb=f3e03359e8f5b5a31abec817ce85c0b373602546;p=fw%2Fsdcc diff --git a/src/mcs51/main.c b/src/mcs51/main.c index 20f721fe..2307724f 100644 --- a/src/mcs51/main.c +++ b/src/mcs51/main.c @@ -19,6 +19,7 @@ static char _defaultRules[] = static char *_mcs51_keywords[] = { "at", + "banked", "bit", "code", "critical", @@ -30,6 +31,8 @@ static char *_mcs51_keywords[] = "pdata", "reentrant", "sfr", + "sfr16", + "sfr32", "sbit", "using", "xdata", @@ -46,9 +49,11 @@ static char *_mcs51_keywords[] = }; -void mcs51_assignRegisters (eBBlock ** ebbs, int count); -static int regParmFlg = 0; /* determine if we can register a parameter */ +void mcs51_assignRegisters (ebbIndex *); + +static int regParmFlg = 0; /* determine if we can register a parameter */ +static int regBitParmFlg = 0; /* determine if we can register a bit parameter */ static void _mcs51_init (void) @@ -57,38 +62,47 @@ _mcs51_init (void) } static void -_mcs51_reset_regparm () +_mcs51_reset_regparm (void) { regParmFlg = 0; + regBitParmFlg = 0; } static int -_mcs51_regparm (sym_link * l) +_mcs51_regparm (sym_link * l, bool reentrant) { + if (IS_SPEC(l) && (SPEC_NOUN(l) == V_BIT)) { + /* bit parameters go to b0 thru b7 */ + if (reentrant && (regBitParmFlg < 8)) { + regBitParmFlg++; + return 12 + regBitParmFlg; + } + return 0; + } if (options.parms_in_bank1 == 0) { - /* simple can pass only the first parameter in a register */ - if (regParmFlg) - return 0; + /* simple can pass only the first parameter in a register */ + if (regParmFlg) + return 0; - regParmFlg = 1; - return 1; + regParmFlg = 1; + return 1; } else { - int size = getSize(l); - int remain ; - - /* first one goes the usual way to DPTR */ - if (regParmFlg == 0) { - regParmFlg += 4 ; - return 1; - } - /* second one onwards goes to RB1_0 thru RB1_7 */ + int size = getSize(l); + int remain ; + + /* first one goes the usual way to DPTR */ + if (regParmFlg == 0) { + regParmFlg += 4 ; + return 1; + } + /* second one onwards goes to RB1_0 thru RB1_7 */ remain = regParmFlg - 4; - if (size > (8 - remain)) { - regParmFlg = 12 ; - return 0; - } - regParmFlg += size ; - return regParmFlg - size + 1; + if (size > (8 - remain)) { + regParmFlg = 12 ; + return 0; + } + regParmFlg += size ; + return regParmFlg - size + 1; } } @@ -108,14 +122,27 @@ _mcs51_finaliseOptions (void) port->genXINIT=0; } - if (options.model == MODEL_LARGE) { + switch (options.model) + { + case MODEL_SMALL: + port->mem.default_local_map = data; + port->mem.default_globl_map = data; + port->s.gptr_size = 3; + break; + case MODEL_MEDIUM: + port->mem.default_local_map = pdata; + port->mem.default_globl_map = pdata; + port->s.gptr_size = 3; + break; + case MODEL_LARGE: port->mem.default_local_map = xdata; port->mem.default_globl_map = xdata; - } - else - { + port->s.gptr_size = 3; + break; + default: port->mem.default_local_map = data; port->mem.default_globl_map = data; + break; } if (options.parms_in_bank1) { @@ -140,9 +167,9 @@ static void _mcs51_genAssemblerPreamble (FILE * of) { if (options.parms_in_bank1) { - int i ; - for (i=0; i < 8 ; i++ ) - fprintf (of,"b1_%d = 0x%x \n",i,8+i); + int i ; + for (i=0; i < 8 ; i++ ) + fprintf (of,"b1_%d = 0x%x \n",i,8+i); } } @@ -150,55 +177,74 @@ _mcs51_genAssemblerPreamble (FILE * of) static int _mcs51_genIVT (FILE * of, symbol ** interrupts, int maxInterrupts) { - return FALSE; + int i; + + fprintf (of, "\tljmp\t__sdcc_gsinit_startup\n"); + + /* now for the other interrupts */ + for (i = 0; i < maxInterrupts; i++) + { + if (interrupts[i]) + { + fprintf (of, "\tljmp\t%s\n", interrupts[i]->rname); + if ( i != maxInterrupts - 1 ) + fprintf (of, "\t.ds\t5\n"); + } + else + { + fprintf (of, "\treti\n"); + if ( i != maxInterrupts - 1 ) + fprintf (of, "\t.ds\t7\n"); + } + } + return TRUE; } -/* Generate code to clear XSEG and idata memory. - This clears XSEG, DSEG, BSEG, OSEG, SSEG */ -static void _mcs51_genRAMCLEAR (FILE * of) { - fprintf (of, "; _mcs51_genRAMCLEAR() start\n"); - fprintf (of, " mov r1,#l_XSEG\n"); - fprintf (of, " mov a,r1\n"); - fprintf (of, " orl a,#(l_XSEG >> 8)\n"); - fprintf (of, " jz 00005$\n"); - fprintf (of, " mov r0,#((l_XSEG + 255) >> 8)\n"); - fprintf (of, " mov dptr,#s_XSEG\n"); - fprintf (of, " clr a\n"); - fprintf (of, "00004$: movx @dptr,a\n"); - fprintf (of, " inc dptr\n"); - fprintf (of, " djnz r1,00004$\n"); - fprintf (of, " djnz r0,00004$\n"); - /* r0 is zero now. Clearing 256 byte assuming 128 byte devices don't mind */ - fprintf (of, "00005$: mov @r0,a\n"); - fprintf (of, " djnz r0,00005$\n"); - fprintf (of, "; _mcs51_genRAMCLEAR() end\n"); +static void +_mcs51_genExtraAreas(FILE *of, bool hasMain) +{ + tfprintf (of, "\t!area\n", HOME_NAME); + tfprintf (of, "\t!area\n", "GSINIT0 (CODE)"); + tfprintf (of, "\t!area\n", "GSINIT1 (CODE)"); + tfprintf (of, "\t!area\n", "GSINIT2 (CODE)"); + tfprintf (of, "\t!area\n", "GSINIT3 (CODE)"); + tfprintf (of, "\t!area\n", "GSINIT4 (CODE)"); + tfprintf (of, "\t!area\n", "GSINIT5 (CODE)"); + tfprintf (of, "\t!area\n", STATIC_NAME); + tfprintf (of, "\t!area\n", port->mem.post_static_name); + tfprintf (of, "\t!area\n", CODE_NAME); } +static void +_mcs51_genInitStartup (FILE *of) +{ + tfprintf (of, "\t!global\n", "__sdcc_gsinit_startup"); + tfprintf (of, "\t!global\n", "__sdcc_program_startup"); + tfprintf (of, "\t!global\n", "__start__stack"); + + if (options.useXstack) + { + tfprintf (of, "\t!global\n", "__sdcc_init_xstack"); + tfprintf (of, "\t!global\n", "__start__xstack"); + } + + // if the port can copy the XINIT segment to XISEG + if (port->genXINIT) + { + port->genXINIT(of); + } + + if (!getenv("SDCC_NOGENRAMCLEAR")) + tfprintf (of, "\t!global\n", "__mcs51_genRAMCLEAR"); +} + + /* Generate code to copy XINIT to XISEG */ static void _mcs51_genXINIT (FILE * of) { - fprintf (of, "; _mcs51_genXINIT() start\n"); - fprintf (of, " mov r1,#l_XINIT\n"); - fprintf (of, " mov a,r1\n"); - fprintf (of, " orl a,#(l_XINIT >> 8)\n"); - fprintf (of, " jz 00003$\n"); - fprintf (of, " mov r2,#((l_XINIT+255) >> 8)\n"); - fprintf (of, " mov dptr,#s_XINIT\n"); - fprintf (of, " mov r0,#s_XISEG\n"); - fprintf (of, " mov p2,#(s_XISEG >> 8)\n"); - fprintf (of, "00001$: clr a\n"); - fprintf (of, " movc a,@a+dptr\n"); - fprintf (of, " movx @r0,a\n"); - fprintf (of, " inc dptr\n"); - fprintf (of, " inc r0\n"); - fprintf (of, " cjne r0,#0,00002$\n"); - fprintf (of, " inc p2\n"); - fprintf (of, "00002$: djnz r1,00001$\n"); - fprintf (of, " djnz r2,00001$\n"); - fprintf (of, " mov p2,#0xFF\n"); - fprintf (of, "00003$:\n"); - fprintf (of, "; _mcs51_genXINIT() end\n"); - - if (!getenv("SDCC_NOGENRAMCLEAR")) _mcs51_genRAMCLEAR (of); + tfprintf (of, "\t!global\n", "__mcs51_genXINIT"); + + if (!getenv("SDCC_NOGENRAMCLEAR")) + tfprintf (of, "\t!global\n", "__mcs51_genXRAMCLEAR"); } @@ -210,16 +256,16 @@ static bool cseCostEstimation (iCode *ic, iCode *pdic) /* 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 + + /* 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; + /* then if they are the same Basic block then ok */ + if (ic->eBBlockNum == pdic->eBBlockNum) return 1; + else return 0; } - + /* for others it is cheaper to do the cse */ return 1; } @@ -231,6 +277,9 @@ hasExtBitOp (int op, int size) if (op == RRC || op == RLC || op == GETHBIT + || op == GETABIT + || op == GETBYTE + || op == GETWORD || (op == SWAP && size <= 2) ) return TRUE; @@ -244,10 +293,392 @@ oclsExpense (struct memmap *oclass) { if (IN_FARSPACE(oclass)) return 1; - + return 0; } + + +static int +instructionSize(char *inst, char *op1, char *op2) +{ + #define ISINST(s) (strncmp(inst, (s), sizeof(s)-1) == 0) + #define IS_A(s) (*(s) == 'a' && *(s+1) == '\0') + #define IS_C(s) (*(s) == 'c' && *(s+1) == '\0') + #define IS_Rn(s) (*(s) == 'r' && *(s+1) >= '0' && *(s+1) <= '7') + #define IS_atRi(s) (*(s) == '@' && *(s+1) == 'r') + + /* Based on the current (2003-08-22) code generation for the + small library, the top instruction probability is: + + 57% mov/movx/movc + 6% push + 6% pop + 4% inc + 4% lcall + 4% add + 3% clr + 2% subb + */ + /* mov, push, & pop are the 69% of the cases. Check them first! */ + if (ISINST ("mov")) + { + if (*(inst+3)=='x') return 1; /* movx */ + if (*(inst+3)=='c') return 1; /* movc */ + if (IS_C (op1) || IS_C (op2)) return 2; + if (IS_A (op1)) + { + if (IS_Rn (op2) || IS_atRi (op2)) return 1; + return 2; + } + if (IS_Rn(op1) || IS_atRi(op1)) + { + if (IS_A(op2)) return 1; + return 2; + } + if (strcmp (op1, "dptr") == 0) return 3; + if (IS_A (op2) || IS_Rn (op2) || IS_atRi (op2)) return 2; + return 3; + } + + if (ISINST ("push")) return 2; + if (ISINST ("pop")) return 2; + + if (ISINST ("lcall")) return 3; + if (ISINST ("ret")) return 1; + if (ISINST ("ljmp")) return 3; + if (ISINST ("sjmp")) return 2; + if (ISINST ("rlc")) return 1; + if (ISINST ("rrc")) return 1; + if (ISINST ("rl")) return 1; + if (ISINST ("rr")) return 1; + if (ISINST ("swap")) return 1; + if (ISINST ("jc")) return 2; + if (ISINST ("jnc")) return 2; + if (ISINST ("jb")) return 3; + if (ISINST ("jnb")) return 3; + if (ISINST ("jbc")) return 3; + if (ISINST ("jmp")) return 1; // always jmp @a+dptr + if (ISINST ("jz")) return 2; + if (ISINST ("jnz")) return 2; + if (ISINST ("cjne")) return 3; + if (ISINST ("mul")) return 1; + if (ISINST ("div")) return 1; + if (ISINST ("da")) return 1; + if (ISINST ("xchd")) return 1; + if (ISINST ("reti")) return 1; + if (ISINST ("nop")) return 1; + if (ISINST ("acall")) return 2; + if (ISINST ("ajmp")) return 2; + + + if (ISINST ("add") || ISINST ("addc") || ISINST ("subb") || ISINST ("xch")) + { + if (IS_Rn(op2) || IS_atRi(op2)) return 1; + return 2; + } + if (ISINST ("inc") || ISINST ("dec")) + { + if (IS_A(op1) || IS_Rn(op1) || IS_atRi(op1)) return 1; + if (strcmp(op1, "dptr") == 0) return 1; + return 2; + } + if (ISINST ("anl") || ISINST ("orl") || ISINST ("xrl")) + { + if (IS_C(op1)) return 2; + if (IS_A(op1)) + { + if (IS_Rn(op2) || IS_atRi(op2)) return 1; + return 2; + } + else + { + if (IS_A(op2)) return 2; + return 3; + } + } + if (ISINST ("clr") || ISINST ("setb") || ISINST ("cpl")) + { + if (IS_A(op1) || IS_C(op1)) return 1; + return 2; + } + if (ISINST ("djnz")) + { + if (IS_Rn(op1)) return 2; + return 3; + } + + /* If the instruction is unrecognized, we shouldn't try to optimize. */ + /* Return a large value to discourage optimization. */ + return 999; +} + +static asmLineNode * +newAsmLineNode (void) +{ + asmLineNode *aln; + + aln = Safe_alloc ( sizeof (asmLineNode)); + aln->size = 0; + aln->regsRead = NULL; + aln->regsWritten = NULL; + + return aln; +} + + +typedef struct mcs51operanddata + { + char name[6]; + int regIdx1; + int regIdx2; + } +mcs51operanddata; + +static mcs51operanddata mcs51operandDataTable[] = + { + {"a", A_IDX, -1}, + {"ab", A_IDX, B_IDX}, + {"ac", CND_IDX, -1}, + {"acc", A_IDX, -1}, + {"ar0", R0_IDX, -1}, + {"ar1", R1_IDX, -1}, + {"ar2", R2_IDX, -1}, + {"ar3", R3_IDX, -1}, + {"ar4", R4_IDX, -1}, + {"ar5", R5_IDX, -1}, + {"ar6", R6_IDX, -1}, + {"ar7", R7_IDX, -1}, + {"b", B_IDX, -1}, + {"c", CND_IDX, -1}, + {"cy", CND_IDX, -1}, + {"dph", DPH_IDX, -1}, + {"dpl", DPL_IDX, -1}, + {"dptr", DPL_IDX, DPH_IDX}, + {"f0", CND_IDX, -1}, + {"f1", CND_IDX, -1}, + {"ov", CND_IDX, -1}, + {"p", CND_IDX, -1}, + {"psw", CND_IDX, -1}, + {"r0", R0_IDX, -1}, + {"r1", R1_IDX, -1}, + {"r2", R2_IDX, -1}, + {"r3", R3_IDX, -1}, + {"r4", R4_IDX, -1}, + {"r5", R5_IDX, -1}, + {"r6", R6_IDX, -1}, + {"r7", R7_IDX, -1}, + }; + +static int +mcs51operandCompare (const void *key, const void *member) +{ + return strcmp((const char *)key, ((mcs51operanddata *)member)->name); +} + +static void +updateOpRW (asmLineNode *aln, char *op, char *optype) +{ + mcs51operanddata *opdat; + char *dot; + + dot = strchr(op, '.'); + if (dot) + *dot = '\0'; + + opdat = bsearch (op, mcs51operandDataTable, + sizeof(mcs51operandDataTable)/sizeof(mcs51operanddata), + sizeof(mcs51operanddata), mcs51operandCompare); + + if (opdat && strchr(optype,'r')) + { + if (opdat->regIdx1 >= 0) + aln->regsRead = bitVectSetBit (aln->regsRead, opdat->regIdx1); + if (opdat->regIdx2 >= 0) + aln->regsRead = bitVectSetBit (aln->regsRead, opdat->regIdx2); + } + if (opdat && strchr(optype,'w')) + { + if (opdat->regIdx1 >= 0) + aln->regsWritten = bitVectSetBit (aln->regsWritten, opdat->regIdx1); + if (opdat->regIdx2 >= 0) + aln->regsWritten = bitVectSetBit (aln->regsWritten, opdat->regIdx2); + } + if (op[0] == '@') + { + if (!strcmp(op, "@r0")) + aln->regsRead = bitVectSetBit (aln->regsRead, R0_IDX); + if (!strcmp(op, "@r1")) + aln->regsRead = bitVectSetBit (aln->regsRead, R1_IDX); + if (strstr(op, "dptr")) + { + aln->regsRead = bitVectSetBit (aln->regsRead, DPL_IDX); + aln->regsRead = bitVectSetBit (aln->regsRead, DPH_IDX); + } + if (strstr(op, "a+")) + aln->regsRead = bitVectSetBit (aln->regsRead, A_IDX); + } +} + +typedef struct mcs51opcodedata + { + char name[6]; + char class[3]; + char pswtype[3]; + char op1type[3]; + char op2type[3]; + } +mcs51opcodedata; + +static mcs51opcodedata mcs51opcodeDataTable[] = + { + {"acall","j", "", "", ""}, + {"add", "", "w", "rw", "r"}, + {"addc", "", "rw", "rw", "r"}, + {"ajmp", "j", "", "", ""}, + {"anl", "", "", "rw", "r"}, + {"cjne", "j", "w", "r", "r"}, + {"clr", "", "", "w", ""}, + {"cpl", "", "", "rw", ""}, + {"da", "", "rw", "rw", ""}, + {"dec", "", "", "rw", ""}, + {"div", "", "w", "rw", ""}, + {"djnz", "j", "", "rw", ""}, + {"inc", "", "", "rw", ""}, + {"jb", "j", "", "r", ""}, + {"jbc", "j", "", "rw", ""}, + {"jc", "j", "", "", ""}, + {"jmp", "j", "", "", ""}, + {"jnb", "j", "", "r", ""}, + {"jnc", "j", "", "", ""}, + {"jnz", "j", "", "", ""}, + {"jz", "j", "", "", ""}, + {"lcall","j", "", "", ""}, + {"ljmp", "j", "", "", ""}, + {"mov", "", "", "w", "r"}, + {"movc", "", "", "w", "r"}, + {"movx", "", "", "w", "r"}, + {"mul", "", "w", "rw", ""}, + {"nop", "", "", "", ""}, + {"orl", "", "", "rw", "r"}, + {"pop", "", "", "w", ""}, + {"push", "", "", "r", ""}, + {"ret", "j", "", "", ""}, + {"reti", "j", "", "", ""}, + {"rl", "", "", "rw", ""}, + {"rlc", "", "rw", "rw", ""}, + {"rr", "", "", "rw", ""}, + {"rrc", "", "rw", "rw", ""}, + {"setb", "", "", "w", ""}, + {"sjmp", "j", "", "", ""}, + {"subb", "", "rw", "rw", "r"}, + {"swap", "", "", "rw", ""}, + {"xch", "", "", "rw", "rw"}, + {"xchd", "", "", "rw", "rw"}, + {"xrl", "", "", "rw", "r"}, + }; + +static int +mcs51opcodeCompare (const void *key, const void *member) +{ + return strcmp((const char *)key, ((mcs51opcodedata *)member)->name); +} + +static asmLineNode * +asmLineNodeFromLineNode (lineNode *ln) +{ + asmLineNode *aln = newAsmLineNode(); + char *op, op1[256], op2[256]; + int opsize; + const char *p; + char inst[8]; + mcs51opcodedata *opdat; + + p = ln->line; + + while (*p && isspace(*p)) p++; + for (op = inst, opsize=1; *p; p++) + { + if (isspace(*p) || *p == ';' || *p == ':' || *p == '=') + break; + else + if (opsize < sizeof(inst)) + *op++ = tolower(*p), opsize++; + } + *op = '\0'; + + if (*p == ';' || *p == ':' || *p == '=') + return aln; + + while (*p && isspace(*p)) p++; + if (*p == '=') + return aln; + + for (op = op1, opsize=1; *p && *p != ','; p++) + { + if (!isspace(*p) && opsize < sizeof(op1)) + *op++ = tolower(*p), opsize++; + } + *op = '\0'; + + if (*p == ',') p++; + for (op = op2, opsize=1; *p && *p != ','; p++) + { + if (!isspace(*p) && opsize < sizeof(op2)) + *op++ = tolower(*p), opsize++; + } + *op = '\0'; + + aln->size = instructionSize(inst, op1, op2); + + aln->regsRead = newBitVect (END_IDX); + aln->regsWritten = newBitVect (END_IDX); + + opdat = bsearch (inst, mcs51opcodeDataTable, + sizeof(mcs51opcodeDataTable)/sizeof(mcs51opcodedata), + sizeof(mcs51opcodedata), mcs51opcodeCompare); + + if (opdat) + { + updateOpRW (aln, op1, opdat->op1type); + updateOpRW (aln, op2, opdat->op2type); + if (strchr(opdat->pswtype,'r')) + aln->regsRead = bitVectSetBit (aln->regsRead, CND_IDX); + if (strchr(opdat->pswtype,'w')) + aln->regsWritten = bitVectSetBit (aln->regsWritten, CND_IDX); + } + + return aln; +} + +static int +getInstructionSize (lineNode *line) +{ + if (!line->aln) + line->aln = asmLineNodeFromLineNode (line); + + return line->aln->size; +} + +static bitVect * +getRegsRead (lineNode *line) +{ + if (!line->aln) + line->aln = asmLineNodeFromLineNode (line); + + return line->aln->regsRead; +} + +static bitVect * +getRegsWritten (lineNode *line) +{ + if (!line->aln) + line->aln = asmLineNodeFromLineNode (line); + + return line->aln->regsWritten; +} + + /** $1 is always the basename. $2 is always the output file. $3 varies @@ -270,96 +701,126 @@ PORT mcs51_port = { TARGET_ID_MCS51, "mcs51", - "MCU 8051", /* Target name */ - NULL, /* Processor name */ + "MCU 8051", /* Target name */ + NULL, /* Processor name */ { glue, - TRUE, /* Emit glue around main */ - MODEL_SMALL | MODEL_LARGE, + TRUE, /* Emit glue around main */ + MODEL_SMALL | MODEL_MEDIUM | MODEL_LARGE, MODEL_SMALL }, { _asmCmd, NULL, - "-plosgffc", /* Options with debug */ - "-plosgff", /* Options without debug */ + "-plosgffc", /* Options with debug */ + "-plosgff", /* Options without debug */ 0, ".asm", - NULL /* no do_assemble function */ + NULL /* no do_assemble function */ }, { _linkCmd, NULL, NULL, - ".rel" + ".rel", + 1 }, { - _defaultRules + _defaultRules, + getInstructionSize, + getRegsRead, + getRegsWritten, + mcs51DeadMove }, { - /* Sizes: char, short, int, long, ptr, fptr, gptr, bit, float, max */ + /* Sizes: char, short, int, long, ptr, fptr, gptr, bit, float, max */ 1, 2, 2, 4, 1, 2, 3, 1, 4, 4 }, + /* tags for generic pointers */ + { 0x00, 0x40, 0x60, 0x80 }, /* far, near, xstack, code */ { - "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)", - "XISEG (XDATA)", // initialized xdata - "XINIT (CODE)", // a code copy of xiseg + "XSTK (PAG,XDATA)", // xstack_name + "STACK (DATA)", // istack_name + "CSEG (CODE)", // code_name + "DSEG (DATA)", // data_name + "ISEG (DATA)", // idata_name + "PSEG (PAG,XDATA)", // pdata_name + "XSEG (XDATA)", // xdata_name + "BSEG (BIT)", // bit_name + "RSEG (DATA)", // reg_name + "GSINIT (CODE)", // static_name + "OSEG (OVR,DATA)", // overlay_name + "GSFINAL (CODE)", // post_static_name + "HOME (CODE)", // home_name + "XISEG (XDATA)", // xidata_name - initialized xdata initialized xdata + "XINIT (CODE)", // xinit_name - a code copy of xiseg + "CONST (CODE)", // const_name - const data (code or not) + "CABS (ABS,CODE)", // cabs_name - const absolute data (code or not) + "XABS (ABS,XDATA)", // xabs_name - absolute xdata/pdata + "IABS (ABS,DATA)", // iabs_name - absolute idata/data NULL, NULL, 1 }, - { NULL, NULL }, + { _mcs51_genExtraAreas, NULL }, { - +1, 0, 4, 1, 1, 0 + +1, /* direction (+1 = stack grows up) */ + 0, /* bank_overhead (switch between register banks) */ + 4, /* isr_overhead */ + 1, /* call_overhead (2 for return address - 1 for pre-incrementing push */ + 1, /* reent_overhead */ + 0 /* banked_overhead (switch between code banks) */ }, - /* mcs51 has an 8 bit mul */ { + /* mcs51 has an 8 bit mul */ 1, -1 }, + { + mcs51_emitDebuggerSymbol + }, + { + 256, /* maxCount */ + 2, /* sizeofElement */ + {6,9,15}, /* sizeofMatchJump[] */ + {9,18,36}, /* sizeofRangeCompare[] */ + 4, /* sizeofSubtract */ + 6, /* sizeofDispatch */ + }, "_", _mcs51_init, _mcs51_parseOptions, NULL, + NULL, _mcs51_finaliseOptions, _mcs51_setDefaultOptions, mcs51_assignRegisters, _mcs51_getRegName, _mcs51_keywords, _mcs51_genAssemblerPreamble, - NULL, /* no genAssemblerEnd */ + NULL, /* no genAssemblerEnd */ _mcs51_genIVT, _mcs51_genXINIT, + _mcs51_genInitStartup, _mcs51_reset_regparm, _mcs51_regparm, NULL, NULL, NULL, - hasExtBitOp, /* hasExtBitOp */ - oclsExpense, /* oclsExpense */ + hasExtBitOp, /* hasExtBitOp */ + oclsExpense, /* oclsExpense */ FALSE, - TRUE, /* little endian */ - 0, /* leave lt */ - 0, /* leave gt */ - 1, /* transform <= to ! > */ - 1, /* transform >= to ! < */ - 1, /* transform != to !(a == b) */ - 0, /* leave == */ + TRUE, /* little endian */ + 0, /* leave lt */ + 0, /* leave gt */ + 1, /* transform <= to ! > */ + 1, /* transform >= to ! < */ + 1, /* transform != to !(a == b) */ + 0, /* leave == */ FALSE, /* No array initializer support. */ cseCostEstimation, - NULL, /* no builtin functions */ - GPOINTER, /* treat unqualified pointers as "generic" pointers */ - 1, /* reset labelKey to 1 */ - 1, /* globals & local static allowed */ + NULL, /* no builtin functions */ + GPOINTER, /* treat unqualified pointers as "generic" pointers */ + 1, /* reset labelKey to 1 */ + 1, /* globals & local static allowed */ PORT_MAGIC };