X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=src%2Fxa51%2Fmain.c;h=f73aa782c06f74c3ffa613b8806ec512e0e3ae3d;hb=80972b2e54c9b88f11c27b878874fd2a6a681391;hp=05ba1c833400461919d8e0f7c75d39947e0ace1a;hpb=e76f5fbeaa15ee0679147f7e2daccd74932faaca;p=fw%2Fsdcc diff --git a/src/xa51/main.c b/src/xa51/main.c old mode 100755 new mode 100644 index 05ba1c83..f73aa782 --- a/src/xa51/main.c +++ b/src/xa51/main.c @@ -1,9 +1,7 @@ -/** @file main.c - xa51 specific general functions. - - Note that mlh prepended _xa51_ on the static functions. Makes - it easier to set a breakpoint using the debugger. +/* @file main.c + xa51 specific general functions. */ + #include "common.h" #include "main.h" #include "ralloc.h" @@ -44,15 +42,20 @@ static char *_xa51_keywords[] = NULL }; -extern int rewinds; -void _xa51_genAssemblerEnd () { +/* rewinds declared in SDCCasm.c, function printCLine(). + * Currently commented out. + * + * extern int rewinds; + */ +void _xa51_genAssemblerEnd (FILE * of) +{ //fprintf (stderr, "Did %d rewind%c for c-line in asm comments\n", rewinds, //rewinds==1 ? '\0' : 's'); } -void xa51_assignRegisters (eBBlock ** ebbs, int count); +void xa51_assignRegisters (ebbIndex *); -static int regParmFlg = 0; /* determine if we can register a parameter */ +static int regParmFlg = 0; /* determine if we can register a parameter */ static void _xa51_init (void) @@ -61,13 +64,13 @@ _xa51_init (void) } static void -_xa51_reset_regparm () +_xa51_reset_regparm (void) { regParmFlg = 0; } static int -_xa51_regparm (sym_link * l) +_xa51_regparm (sym_link * l, bool reentrant) { return 0; // for now /* for this processor it is simple @@ -91,8 +94,13 @@ _xa51_parseOptions (int *pargc, char **argv, int *i) static void _xa51_finaliseOptions (void) { + fprintf (stderr, "*** WARNING *** The XA51 port isn't yet complete\n"); port->mem.default_local_map = istack; port->mem.default_globl_map = xdata; + if (options.model!=MODEL_PAGE0) { + fprintf (stderr, "-mxa51 only supports --model-page0\n"); + exit (1); + } } static void @@ -102,6 +110,7 @@ _xa51_setDefaultOptions (void) options.intlong_rent=1; options.float_rent=1; options.stack_loc=0x100; + options.data_loc=0; } static const char * @@ -114,23 +123,23 @@ _xa51_getRegName (struct regs *reg) /* Generate interrupt vector table. */ static int -_xa51_genIVT (FILE * of, symbol ** interrupts, int maxInterrupts) +_xa51_genIVT (struct dbuf_s * oBuf, symbol ** interrupts, int maxInterrupts) { return TRUE; } /* Generate code to copy XINIT to XISEG */ static void _xa51_genXINIT (FILE * of) { - fprintf (of, "; _xa51_genXINIT() start\n"); - fprintf (of, " mov r0,#l_XINIT\n"); - fprintf (of, " beq 00002$\n"); - fprintf (of, " mov r1,#s_XINIT\n"); + fprintf (of, "; _xa51_genXINIT() start\n"); + fprintf (of, " mov r0,#l_XINIT\n"); + fprintf (of, " beq 00002$\n"); + fprintf (of, " mov r1,#s_XINIT\n"); fprintf (of, " mov r2,#s_XISEG\n"); fprintf (of, "00001$: movc r3l,[r1+]\n"); fprintf (of, " mov [r2+],r3l\n"); fprintf (of, " djnz r0,00001$\n"); fprintf (of, "00002$:\n"); - fprintf (of, "; _xa51_genXINIT() end\n"); + fprintf (of, "; _xa51_genXINIT() end\n"); } static void @@ -139,19 +148,19 @@ _xa51_genAssemblerPreamble (FILE * of) symbol *mainExists=newSymbol("main", 0); mainExists->block=0; - fprintf (of, "_errno\tsfr\t0x00; to keep the fp-lib's happy for now\n\n"); - if ((mainExists=findSymWithLevel(SymbolTab, mainExists))) { - fprintf (of, "\t.area CSEG\t(CODE)\n"); + fprintf (of, "\t.area GSINIT\t(CODE)\n"); fprintf (of, "__interrupt_vect:\n"); fprintf (of, "\t.dw\t0x8f00\n"); fprintf (of, "\t.dw\t__sdcc_gsinit_startup\n"); fprintf (of, "\n"); fprintf (of, "__sdcc_gsinit_startup:\n"); - fprintf (of, "\tmov.b\t_SCR,#0x01\t; page zero mode\n"); + fprintf (of, ";\tmov.b\t_SCR,#0x01\t; page zero mode\n"); + fprintf (of, "\t.db 0x96,0x48,0x40,0x01\n"); fprintf (of, "\tmov\tr7,#0x%04x\n", options.stack_loc); fprintf (of, "\tcall\t_external_startup\n"); _xa51_genXINIT(of); + fprintf (of, "\t.area CSEG\t(CODE)\n"); fprintf (of, "\tcall\t_main\n"); fprintf (of, "\treset\t;main should not return\n"); } @@ -169,21 +178,44 @@ 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 xa51 is pretty good at it + + /* if bitwise | add & subtract then no since xa51 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; } -#if 0 +/* Indicate which extended bit operations this port supports */ +static bool +hasExtBitOp (int op, int size) +{ + if (op == RRC + || op == RLC + || op == GETHBIT + ) + return TRUE; + else + return FALSE; +} + +/* Indicate the expense of an access to an output storage class */ +static int +oclsExpense (struct memmap *oclass) +{ + if (IN_FARSPACE(oclass)) + return 1; + + return 0; +} + + /** $1 is always the basename. $2 is always the output file. $3 varies @@ -192,14 +224,13 @@ static bool cseCostEstimation (iCode *ic, iCode *pdic) */ static const char *_linkCmd[] = { - "{bindir}{sep}aslink", "-nf", "$1", NULL + "xa_link", "", "\"$1\"", NULL }; -#endif /* $3 is replaced by assembler.debug_opts resp. port->assembler.plain_opts */ static const char *_asmCmd[] = { - "xa_asm", "$l", "$3", "$1.xa", NULL + "xa_rasm", "$l", "$3", "\"$1.asm\"", NULL }; /* Globals */ @@ -207,40 +238,46 @@ PORT xa51_port = { TARGET_ID_XA51, "xa51", - "MCU 80C51XA", /* Target name */ + "MCU 80C51XA", /* Target name */ + NULL, /* Processor name */ { - FALSE, /* Emit glue around main */ - MODEL_LARGE, - MODEL_LARGE + glue, + FALSE, /* Emit glue around main */ + MODEL_PAGE0, + MODEL_PAGE0 }, { _asmCmd, NULL, - "", /* Options with debug */ - "", /* Options without debug */ + "", /* Options with debug */ + "", /* Options without debug */ 0, - ".xa", - NULL /* no do_assemble function */ + ".asm", + NULL /* no do_assemble function */ }, { - NULL, //_linkCmd, + _linkCmd, NULL, - xa_link, - ".rel" + NULL, + ".rel", + 1 }, { _defaultRules }, { - /* 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, 2, 2, 3, 1, 4, 4 }, + /* tags for generic pointers */ + { 0x00, 0x40, 0x60, 0x80 }, /* far, near, xstack, code */ { "XSEG (XDATA)", "STACK (XDATA)", "CSEG (CODE)", "DSEG (DATA)", NULL, //"ISEG (DATA)", + NULL, //"PSEG (PAG,XDATA)", "XSEG (XDATA)", "BSEG (BIT)", NULL, //"RSEG (DATA)", @@ -250,15 +287,20 @@ PORT xa51_port = "HOME (CODE)", "XISEG (XDATA)", // initialized xdata "XINIT (CODE)", // 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 + "IABS (ABS,DATA)", // iabs_name - absolute data NULL, // default local map NULL, // default global map 1 }, + { NULL, NULL }, { -1, // stack grows down 0, // bank overhead NUY - 6, // isr overhead - 4, // function call overhead + 4, // isr overhead, page zero mode + 2, // function call overhead, page zero mode 0, // reentrant overhead NUY 0 // banked overhead NUY }, @@ -266,9 +308,24 @@ PORT xa51_port = { 2, -2 }, + { + xa51_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 */ + }, "_", _xa51_init, _xa51_parseOptions, + NULL, + NULL, _xa51_finaliseOptions, _xa51_setDefaultOptions, xa51_assignRegisters, @@ -278,23 +335,27 @@ PORT xa51_port = _xa51_genAssemblerEnd, _xa51_genIVT, _xa51_genXINIT, + NULL, /* genInitStartup */ _xa51_reset_regparm, _xa51_regparm, NULL, // process_pragma() NULL, // getMangledFunctionName() NULL, // hasNativeMulFor() + hasExtBitOp, /* hasExtBitOp */ + oclsExpense, /* oclsExpense */ TRUE, // use_dw_for_init - 0, /* leave lt */ - 0, /* leave gt */ - 0, /* transform <= to ! > */ - 0, /* transform >= to ! < */ - 0, /* 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 };