#include "main.h"
#include "ralloc.h"
#include "gen.h"
+#include "../SDCCutil.h"
static char _defaultRules[] =
{
};
/* list of key words used by msc51 */
-static char *_mcs51_keywords[] = {
- "at",
- "bit",
- "code",
- "critical",
- "data",
- "far",
- "idata",
- "interrupt",
- "near",
- "pdata",
- "reentrant",
- "sfr",
- "sbit",
- "using",
- "xdata",
- "_data",
- "_code",
- "_generic",
- "_near",
- "_xdata",
- "_pdata",
- "_idata",
- NULL
+static char *_mcs51_keywords[] =
+{
+ "at",
+ "bit",
+ "code",
+ "critical",
+ "data",
+ "far",
+ "idata",
+ "interrupt",
+ "near",
+ "pdata",
+ "reentrant",
+ "sfr",
+ "sbit",
+ "using",
+ "xdata",
+ "_data",
+ "_code",
+ "_generic",
+ "_near",
+ "_xdata",
+ "_pdata",
+ "_idata",
+ "_naked",
+ "_overlay",
+ NULL
};
-void mcs51_assignRegisters (eBBlock **ebbs, int count);
+void mcs51_assignRegisters (eBBlock ** ebbs, int count);
+
+static int regParmFlg = 0; /* determine if we can register a parameter */
-static bool _mcs51_parseOptions(int *pargc, char **argv, int *i)
+static void
+_mcs51_init (void)
{
- /* TODO: allow port-specific command line options to specify
- * segment names here.
- */
- return FALSE;
+ asm_addTree (&asm_asxxxx_mapping);
}
-static void _mcs51_finaliseOptions(void)
+static void
+_mcs51_reset_regparm ()
{
- /* Hack-o-matic: if we are using the flat24 model,
- * adjust pointer sizes.
- */
- if (options.model == MODEL_FLAT24)
- {
- 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.
- */
- #endif
- fReturn = fReturn390;
- fReturnSize = 5;
- }
-
- if (options.model) {
- port->mem.default_local_map = xdata;
- port->mem.default_globl_map = xdata;
+ regParmFlg = 0;
+}
+
+static int
+_mcs51_regparm (sym_link * l)
+{
+ if (options.parms_in_bank1 == 0) {
+ /* simple can pass only the first parameter in a register */
+ if (regParmFlg)
+ return 0;
+
+ regParmFlg = 1;
+ return 1;
} else {
- port->mem.default_local_map = data;
- port->mem.default_globl_map = data;
+ 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;
}
}
-static void _mcs51_setDefaultOptions(void)
+static bool
+_mcs51_parseOptions (int *pargc, char **argv, int *i)
+{
+ /* TODO: allow port-specific command line options to specify
+ * segment names here.
+ */
+ return FALSE;
+}
+
+static void
+_mcs51_finaliseOptions (void)
{
+ if (options.noXinitOpt) {
+ port->genXINIT=0;
+ }
+
+ if (options.model == MODEL_LARGE) {
+ port->mem.default_local_map = xdata;
+ port->mem.default_globl_map = xdata;
+ }
+ else
+ {
+ port->mem.default_local_map = data;
+ port->mem.default_globl_map = data;
+ }
+
+ if (options.parms_in_bank1) {
+ addSet(&preArgvSet, Safe_strdup("-DSDCC_PARMS_IN_BANK1"));
+ }
}
-static const char *_mcs51_getRegName(struct regs *reg)
+static void
+_mcs51_setDefaultOptions (void)
{
- if (reg)
- return reg->name;
- return "err";
}
-static void _mcs51_genAssemblerPreamble(FILE *of)
+static const char *
+_mcs51_getRegName (struct regs *reg)
{
- if (options.model == MODEL_FLAT24)
- {
- fputs(".flat24 on\t\t; 24 bit flat addressing\n", of);
- fputs("dpx = 0x93\t\t; dpx register unknown to assembler\n", of);
+ if (reg)
+ return reg->name;
+ return "err";
+}
- }
+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);
+ }
}
/* Generate interrupt vector table. */
-static int _mcs51_genIVT(FILE *of, symbol **interrupts, int maxInterrupts)
+static int
+_mcs51_genIVT (FILE * of, symbol ** interrupts, int maxInterrupts)
{
- int i;
-
- if (options.model != MODEL_FLAT24)
- {
- /* Let the default code handle it. */
- return FALSE;
- }
-
- fprintf (of, "\tajmp\t__sdcc_gsinit_startup\n");
+ return FALSE;
+}
+
+/* Generate code to copy XINIT to XISEG */
+static void _mcs51_genXINIT (FILE * of) {
+ fprintf (of, "; _mcs51_genXINIT() start\n");
+ fprintf (of, " mov a,#l_XINIT\n");
+ fprintf (of, " mov r1,a\n");
+ fprintf (of, " mov r2,#(l_XINIT >> 8)\n");
+ fprintf (of, " orl a,r2\n");
+ fprintf (of, " jz 00003$\n");
+ fprintf (of, " inc r2\n");
+ fprintf (of, " mov dptr,#s_XINIT\n");
+ fprintf (of, " mov r0,#s_XISEG\n");
+ fprintf (of, " mov p2,#(s_XISEG >> 8)\n");
+ fprintf (of, "00001$: 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");
+}
+
+
+/* Do CSE estimation */
+static bool cseCostEstimation (iCode *ic, iCode *pdic)
+{
+ operand *result = IC_RESULT(ic);
+ sym_link *result_type = operandType(result);
+
+ /* if it is a pointer then return ok for now */
+ if (IC_RESULT(ic) && IS_PTR(result_type)) return 1;
- /* now for the other interrupts */
- for (i = 0; i < maxInterrupts; i++)
- {
- if (interrupts[i])
- {
- fprintf(of, "\tljmp\t%s\n\t.ds\t4\n", interrupts[i]->rname);
- }
- else
- {
- fprintf(of, "\treti\n\t.ds\t7\n");
- }
+ /* 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;
}
-
- return TRUE;
+
+ /* for others it is cheaper to do the cse */
+ return 1;
}
/** $1 is always the basename.
$l is the list of extra options that should be there somewhere...
MUST be terminated with a NULL.
*/
-static const char *_linkCmd[] = {
- "aslink", "-nf", "$1", NULL
+static const char *_linkCmd[] =
+{
+ "aslink", "-nf", "\"$1\"", NULL
};
-static const char *_asmCmd[] = {
- "asx8051", "-plosgffc", "$1.asm", NULL
+/* $3 is replaced by assembler.debug_opts resp. port->assembler.plain_opts */
+static const char *_asmCmd[] =
+{
+ "asx8051", "$l", "$3", "\"$1.asm\"", NULL
};
/* Globals */
-PORT mcs51_port = {
- "mcs51",
- "MCU 8051", /* Target name */
- {
- TRUE, /* Emit glue around main */
- },
- {
- _asmCmd,
- "-plosgffc", /* Options with debug */
- "-plosgff", /* Options without debug */
- },
- {
- _linkCmd
- },
- {
- _defaultRules
- },
- {
- /* Sizes: char, short, int, long, ptr, fptr, gptr, bit, float, max */
- 1, 1, 2, 4, 1, 2, 3, 1, 4, 4
- },
- {
- "XSEG (XDATA)",
- "STACK (DATA)",
- "CSEG (CODE)",
- "DSEG (DATA)",
- "ISEG (DATA)",
- "XSEG (XDATA)",
- "BSEG (BIT)",
- "RSEG (DATA)",
- "GSINIT (CODE)",
- "OSEG (OVR,DATA)",
- "GSFINAL (CODE)",
- NULL,
- NULL
- },
- {
- +1, 1, 4, 1, 1
- },
- /* mcs51 has an 8 bit mul */
- {
- 1
- },
+PORT mcs51_port =
+{
+ TARGET_ID_MCS51,
+ "mcs51",
+ "MCU 8051", /* Target name */
+ NULL, /* Processor name */
+ {
+ glue,
+ TRUE, /* Emit glue around main */
+ MODEL_SMALL | MODEL_LARGE,
+ MODEL_SMALL
+ },
+ {
+ _asmCmd,
NULL,
- _mcs51_parseOptions,
- _mcs51_finaliseOptions,
- _mcs51_setDefaultOptions,
- mcs51_assignRegisters,
- _mcs51_getRegName ,
- _mcs51_keywords,
- _mcs51_genAssemblerPreamble,
- _mcs51_genIVT
+ "-plosgffc", /* Options with debug */
+ "-plosgff", /* Options without debug */
+ 0,
+ ".asm",
+ NULL /* no do_assemble function */
+ },
+ {
+ _linkCmd,
+ NULL,
+ NULL,
+ ".rel"
+ },
+ {
+ _defaultRules
+ },
+ {
+ /* Sizes: char, short, int, long, ptr, fptr, gptr, bit, float, max */
+ 1, 2, 2, 4, 1, 2, 3, 1, 4, 4
+ },
+ {
+ "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
+ NULL,
+ NULL,
+ 1
+ },
+ { NULL, NULL },
+ {
+ +1, 0, 4, 1, 1, 0
+ },
+ /* mcs51 has an 8 bit mul */
+ {
+ 1, -1
+ },
+ "_",
+ _mcs51_init,
+ _mcs51_parseOptions,
+ NULL,
+ _mcs51_finaliseOptions,
+ _mcs51_setDefaultOptions,
+ mcs51_assignRegisters,
+ _mcs51_getRegName,
+ _mcs51_keywords,
+ _mcs51_genAssemblerPreamble,
+ NULL, /* no genAssemblerEnd */
+ _mcs51_genIVT,
+ _mcs51_genXINIT,
+ _mcs51_reset_regparm,
+ _mcs51_regparm,
+ NULL,
+ NULL,
+ NULL,
+ FALSE,
+ 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 */
+ PORT_MAGIC
};
-