-/** @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"
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)
}
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
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
options.intlong_rent=1;
options.float_rent=1;
options.stack_loc=0x100;
+ options.data_loc=0;
}
static const char *
/* 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
_xa51_genAssemblerPreamble (FILE * of)
{
- fprintf (of, "_errno\tsfr\t0x00; to keep the fp-lib's happy for now\n\n");
- fprintf (of, "\t.area CSEG\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\tr7,#0x%04x\n", options.stack_loc);
- fprintf (of, "\tcall\t_external_startup\n");
- _xa51_genXINIT(of);
- fprintf (of, "\tcall\t_main\n");
- fprintf (of, "\treset\t;main should not return\n");
+ 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 */
/* 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
*/
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 */
{
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,
NULL,
- xa_link,
- ".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 (XDATA)",
"CSEG (CODE)",
"DSEG (DATA)",
NULL, //"ISEG (DATA)",
+ NULL, //"PSEG (PAG,XDATA)",
"XSEG (XDATA)",
"BSEG (BIT)",
NULL, //"RSEG (DATA)",
"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
},
{
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,
_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
};
projects / fw / sdcc / blobdiff