2 ds390 specific general functions.
4 Note that mlh prepended _ds390_ 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 msc51 */
18 static char *_ds390_keywords[] = {
45 void ds390_assignRegisters (eBBlock **ebbs, int count);
47 static int regParmFlg = 0; /* determine if we can register a parameter */
49 static void _ds390_init(void)
51 asm_addTree(&asm_asxxxx_mapping);
54 static void _ds390_reset_regparm()
59 static int _ds390_regparm( link *l)
61 /* for this processor it is simple
62 can pass only the first parameter in a register */
70 static bool _ds390_parseOptions(int *pargc, char **argv, int *i)
72 /* TODO: allow port-specific command line options to specify
78 static void _ds390_finaliseOptions(void)
80 /* Hack-o-matic: if we are using the flat24 model,
81 * adjust pointer sizes.
83 if (options.model != MODEL_FLAT24)
86 "*** warning: ds390 port only supports the flat24 model.\n");
87 options.model = MODEL_FLAT24;
89 port->s.fptr_size = 3;
90 port->s.gptr_size = 4;
91 port->stack.isr_overhead++; /* Will save dpx on ISR entry. */
93 port->stack.call_overhead++; /* This acounts for the extra byte
94 * of return addres on the stack.
95 * but is ugly. There must be a
101 port->mem.default_local_map = xdata;
102 port->mem.default_globl_map = xdata;
104 port->mem.default_local_map = data;
105 port->mem.default_globl_map = data;
108 if (options.stack10bit)
110 if (options.model != MODEL_FLAT24)
113 "*** warning: 10 bit stack mode is only supported in flat24 model.\n");
114 fprintf(stderr, "\t10 bit stack mode disabled.\n");
115 options.stack10bit = 0;
119 /* Fixup the memory map for the stack; it is now in
120 * far space and requires a FPOINTER to access it.
123 istack->ptrType = FPOINTER;
128 static void _ds390_setDefaultOptions(void)
132 static const char *_ds390_getRegName(struct regs *reg)
139 static void _ds390_genAssemblerPreamble(FILE *of)
141 if (options.model == MODEL_FLAT24)
143 fputs(".flat24 on\t\t; 24 bit flat addressing\n", of);
144 fputs("dpx = 0x93\t\t; dpx register unknown to assembler\n", of);
145 fputs("dps = 0x86\t\t; dps register unknown to assembler\n", of);
146 fputs("dpl1 = 0x84\t\t; dpl1 register unknown to assembler\n", of);
147 fputs("dph1 = 0x85\t\t; dph1 register unknown to assembler\n", of);
148 fputs("dpx1 = 0x95\t\t; dpx1 register unknown to assembler\n", of);
149 fputs("ap = 0x9C\t\t; ap register unknown to assembler\n", of);
153 /* Generate interrupt vector table. */
154 static int _ds390_genIVT(FILE *of, symbol **interrupts, int maxInterrupts)
158 if (options.model != MODEL_FLAT24)
160 /* Let the default code handle it. */
164 fprintf (of, "\tajmp\t__sdcc_gsinit_startup\n");
166 /* now for the other interrupts */
167 for (i = 0; i < maxInterrupts; i++)
171 fprintf(of, "\tljmp\t%s\n\t.ds\t4\n", interrupts[i]->rname);
175 fprintf(of, "\treti\n\t.ds\t7\n");
182 /** $1 is always the basename.
183 $2 is always the output file.
185 $l is the list of extra options that should be there somewhere...
186 MUST be terminated with a NULL.
188 static const char *_linkCmd[] = {
189 "aslink", "-nf", "$1", NULL
192 static const char *_asmCmd[] = {
193 "asx8051", "-plosgffc", "$1.asm", NULL
199 "DS80C390", /* Target name */
201 TRUE, /* Emit glue around main */
202 MODEL_SMALL | MODEL_LARGE | MODEL_FLAT24,
207 "-plosgffc", /* Options with debug */
208 "-plosgff", /* Options without debug */
220 /* Sizes: char, short, int, long, ptr, fptr, gptr, bit, float, max */
221 1, 1, 2, 4, 1, 2, 3, 1, 4, 4
243 /* ds390 has an 8 bit mul */
250 _ds390_finaliseOptions,
251 _ds390_setDefaultOptions,
252 ds390_assignRegisters,
255 _ds390_genAssemblerPreamble,
257 _ds390_reset_regparm,