2 xa51 specific general functions.
4 Note that mlh prepended _xa51_ on the static functions. Makes
5 it easier to set a breakpoint using the debugger.
12 static char _defaultRules[] =
17 /* list of key words used by xa51 */
18 static char *_xa51_keywords[] =
48 void xa51_assignRegisters (eBBlock ** ebbs, int count);
50 static int regParmFlg = 0; /* determine if we can register a parameter */
55 asm_addTree (&asm_asxxxx_mapping);
59 _xa51_reset_regparm ()
65 _xa51_regparm (sym_link * l)
68 /* for this processor it is simple
69 can pass only the first parameter in a register */
78 _xa51_parseOptions (int *pargc, char **argv, int *i)
80 /* TODO: allow port-specific command line options to specify
87 _xa51_finaliseOptions (void)
89 port->mem.default_local_map = istack;
90 port->mem.default_globl_map = xdata;
94 _xa51_setDefaultOptions (void)
100 _xa51_getRegName (struct regs *reg)
108 _xa51_genAssemblerPreamble (FILE * of)
112 /* Generate interrupt vector table. */
114 _xa51_genIVT (FILE * of, symbol ** interrupts, int maxInterrupts)
119 /* Generate code to copy XINIT to XISEG */
120 static void _xa51_genXINIT (FILE * of) {
121 fprintf (of, "; _xa51_genXINIT() start\n");
122 fprintf (of, " mov a,#l_XINIT\n");
123 fprintf (of, " orl a,#l_XINIT>>8\n");
124 fprintf (of, " jz 00003$\n");
125 fprintf (of, " mov a,#s_XINIT\n");
126 fprintf (of, " add a,#l_XINIT\n");
127 fprintf (of, " mov r1,a\n");
128 fprintf (of, " mov a,#s_XINIT>>8\n");
129 fprintf (of, " addc a,#l_XINIT>>8\n");
130 fprintf (of, " mov r2,a\n");
131 fprintf (of, " mov dptr,#s_XINIT\n");
132 fprintf (of, " mov r0,#s_XISEG\n");
133 fprintf (of, " mov p2,#(s_XISEG >> 8)\n");
134 fprintf (of, "00001$: clr a\n");
135 fprintf (of, " movc a,@a+dptr\n");
136 fprintf (of, " movx @r0,a\n");
137 fprintf (of, " inc dptr\n");
138 fprintf (of, " inc r0\n");
139 fprintf (of, " cjne r0,#0,00002$\n");
140 fprintf (of, " inc p2\n");
141 fprintf (of, "00002$: mov a,dpl\n");
142 fprintf (of, " cjne a,ar1,00001$\n");
143 fprintf (of, " mov a,dph\n");
144 fprintf (of, " cjne a,ar2,00001$\n");
145 fprintf (of, " mov p2,#0xFF\n");
146 fprintf (of, "00003$:\n");
147 fprintf (of, "; _xa51_genXINIT() end\n");
151 /* Do CSE estimation */
152 static bool cseCostEstimation (iCode *ic, iCode *pdic)
154 operand *result = IC_RESULT(ic);
155 sym_link *result_type = operandType(result);
157 /* if it is a pointer then return ok for now */
158 if (IC_RESULT(ic) && IS_PTR(result_type)) return 1;
160 /* if bitwise | add & subtract then no since xa51 is pretty good at it
161 so we will cse only if they are local (i.e. both ic & pdic belong to
162 the same basic block */
163 if (IS_BITWISE_OP(ic) || ic->op == '+' || ic->op == '-') {
164 /* then if they are the same Basic block then ok */
165 if (ic->eBBlockNum == pdic->eBBlockNum) return 1;
169 /* for others it is cheaper to do the cse */
173 /** $1 is always the basename.
174 $2 is always the output file.
176 $l is the list of extra options that should be there somewhere...
177 MUST be terminated with a NULL.
179 static const char *_linkCmd[] =
181 "{bindir}{sep}aslink", "-nf", "$1", NULL
184 /* $3 is replaced by assembler.debug_opts resp. port->assembler.plain_opts */
185 static const char *_asmCmd[] =
187 "xa_asm", "$l", "$3", "$1.asm", NULL
195 "MCU 80C51XA", /* Target name */
197 TRUE, /* Emit glue around main */
204 "-plosgffc", /* Options with debug */
205 "-plosgff", /* Options without debug */
208 NULL /* no do_assemble function */
220 /* Sizes: char, short, int, long, ptr, fptr, gptr, bit, float, max */
221 1, 2, 2, 4, 1, 2, 3, 1, 4, 4
236 "XISEG (XDATA)", // initialized xdata
237 "XINIT (CODE)", // a code copy of xiseg
238 NULL, // default local map
239 NULL, // default global map
243 -1, // stack grows down
244 0, // bank overhead NUY
246 4, // function call overhead
247 0, // reentrant overhead NUY
248 0 // banked overhead NUY
250 /* xa51 has an 16 bit mul */
257 _xa51_finaliseOptions,
258 _xa51_setDefaultOptions,
259 xa51_assignRegisters,
262 _xa51_genAssemblerPreamble,
263 NULL, /* no genAssemblerEnd */
274 1, /* transform <= to ! > */
275 1, /* transform >= to ! < */
276 1, /* transform != to !(a == b) */
278 FALSE, /* No array initializer support. */
280 NULL, /* no builtin functions */
281 GPOINTER, /* treat unqualified pointers as "generic" pointers */
282 1, /* reset labelKey to 1 */
283 1, /* globals & local static allowed */