X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=src%2Fxa51%2Fmain.c;h=f73aa782c06f74c3ffa613b8806ec512e0e3ae3d;hb=04a66f4aa0c6a3cf27d0b5339a74ed8e4f92f1a6;hp=429a2cda3373963830093ee2da71f791c8388d05;hpb=86733690a2d2d4e1cb67d1e14adb1e80f77813ce;p=fw%2Fsdcc diff --git a/src/xa51/main.c b/src/xa51/main.c old mode 100755 new mode 100644 index 429a2cda..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" @@ -40,34 +38,39 @@ static char *_xa51_keywords[] = //"_pdata", //"_idata", "_naked", - "_overlay", + //"_overlay", NULL }; -extern int rewinds; -void _xa51_genAssemblerEnd () { - fprintf (stderr, "Did %d rewind%c for c-line in asm comments\n", rewinds, - rewinds==1 ? '\0' : 's'); +/* 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) { - asm_addTree (&asm_asxxxx_mapping); + asm_addTree (&asm_xa_asm_mapping); } 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 @@ -101,6 +109,8 @@ _xa51_setDefaultOptions (void) options.stackAuto=1; options.intlong_rent=1; options.float_rent=1; + options.stack_loc=0x100; + options.data_loc=0; } static const char * @@ -111,39 +121,54 @@ _xa51_getRegName (struct regs *reg) return "err"; } -static void -_xa51_genAssemblerPreamble (FILE * of) -{ - // this needs to be an include file someday - fputs ("pswl\tsfr\t0x400\n", of); - fputs ("z\tbit\tpswl.0\n", of); - fputs ("n\tbit\tpswl.1\n", of); - fputs ("v\tbit\tpswl.2\n", of); - fputs ("ac\tbit\tpswl.6\n", of); - fputs ("cy\tbit\tpswl.7\n", of); -} - /* 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 FALSE; + 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, "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 +_xa51_genAssemblerPreamble (FILE * of) +{ + symbol *mainExists=newSymbol("main", 0); + mainExists->block=0; + + if ((mainExists=findSymWithLevel(SymbolTab, mainExists))) { + 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, "\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"); + } +} + +/* dummy linker for now */ +void xa_link(void) { +} /* Do CSE estimation */ static bool cseCostEstimation (iCode *ic, iCode *pdic) @@ -153,20 +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; } +/* 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 @@ -175,13 +224,13 @@ static bool cseCostEstimation (iCode *ic, iCode *pdic) */ static const char *_linkCmd[] = { - "{bindir}{sep}aslink", "-nf", "$1", NULL + "xa_link", "", "\"$1\"", NULL }; /* $3 is replaced by assembler.debug_opts resp. port->assembler.plain_opts */ static const char *_asmCmd[] = { - "xa_asm", "$l", "$3", "$1.xa", NULL + "xa_rasm", "$l", "$3", "\"$1.asm\"", NULL }; /* Globals */ @@ -189,58 +238,69 @@ PORT xa51_port = { TARGET_ID_XA51, "xa51", - "MCU 80C51XA", /* Target name */ + "MCU 80C51XA", /* Target name */ + NULL, /* Processor name */ { - TRUE, /* 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 */ }, { _linkCmd, NULL, NULL, - ".rel" + ".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 (DATA)", + "STACK (XDATA)", "CSEG (CODE)", "DSEG (DATA)", - "ISEG (DATA)", + NULL, //"ISEG (DATA)", + NULL, //"PSEG (PAG,XDATA)", "XSEG (XDATA)", "BSEG (BIT)", - "RSEG (DATA)", + NULL, //"RSEG (DATA)", "GSINIT (CODE)", - "OSEG (OVR,DATA)", + NULL, //"OSEG (OVR,XDATA)", "GSFINAL (CODE)", "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 }, @@ -248,9 +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, @@ -260,23 +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 };