gencode.c
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#include "mn10300_sim.h"
static void write_header PARAMS ((void));
static void write_opcodes PARAMS ((void));
static void write_template PARAMS ((void));
long Opcodes[512];
static int curop=0;
int
main (argc, argv)
int argc;
char *argv[];
{
if ((argc > 1) && (strcmp (argv[1], "-h") == 0))
write_header();
else if ((argc > 1) && (strcmp (argv[1], "-t") == 0))
write_template ();
else
write_opcodes();
return 0;
}
static void
write_header ()
{
struct mn10300_opcode *opcode;
for (opcode = (struct mn10300_opcode *)mn10300_opcodes; opcode->name; opcode++)
printf("void OP_%X PARAMS ((unsigned long, unsigned long));\t\t/* %s */\n",
opcode->opcode, opcode->name);
}
/* write_template creates a file all required functions, ready */
/* to be filled out */
static void
write_template ()
{
struct mn10300_opcode *opcode;
int i,j;
printf ("#include \"mn10300_sim.h\"\n");
printf ("#include \"simops.h\"\n");
for (opcode = (struct mn10300_opcode *)mn10300_opcodes; opcode->name; opcode++)
{
printf("/* %s */\nvoid\nOP_%X (insn, extension)\n unsigned long insn, extension;\n{\n", opcode->name, opcode->opcode);
/* count operands */
j = 0;
for (i = 0; i < 6; i++)
{
int flags = mn10300_operands[opcode->operands[i]].flags;
if (flags)
j++;
}
switch (j)
{
case 0:
printf ("printf(\" %s\\n\");\n", opcode->name);
break;
case 1:
printf ("printf(\" %s\\t%%x\\n\", OP[0]);\n", opcode->name);
break;
case 2:
printf ("printf(\" %s\\t%%x,%%x\\n\",OP[0],OP[1]);\n",
opcode->name);
break;
case 3:
printf ("printf(\" %s\\t%%x,%%x,%%x\\n\",OP[0],OP[1],OP[2]);\n",
opcode->name);
break;
default:
fprintf (stderr,"Too many operands: %d\n", j);
}
printf ("}\n\n");
}
}
static void
write_opcodes ()
{
struct mn10300_opcode *opcode;
int i, j;
int numops;
/* write out opcode table */
printf ("#include \"mn10300_sim.h\"\n");
printf ("#include \"simops.h\"\n\n");
printf ("struct simops Simops[] = {\n");
for (opcode = (struct mn10300_opcode *)mn10300_opcodes; opcode->name; opcode++)
{
int size;
if (opcode->format == FMT_S0)
size = 1;
else if (opcode->format == FMT_S1
|| opcode->format == FMT_D0)
size = 2;
else if (opcode->format == FMT_S2
|| opcode->format == FMT_D1)
size = 3;
else if (opcode->format == FMT_S4)
size = 5;
else if (opcode->format == FMT_D2)
size = 4;
else if (opcode->format == FMT_D4)
size = 6;
else
size = 7;
printf (" { 0x%x,0x%x,OP_%X,%d,%d,",
opcode->opcode, opcode->mask, opcode->opcode,
size, opcode->format);
Opcodes[curop++] = opcode->opcode;
/* count operands */
j = 0;
for (i = 0; i < 6; i++)
{
int flags = mn10300_operands[opcode->operands[i]].flags;
if (flags)
j++;
}
printf ("%d,{",j);
j = 0;
numops = 0;
for (i = 0; i < 6; i++)
{
int flags = mn10300_operands[opcode->operands[i]].flags;
int shift = mn10300_operands[opcode->operands[i]].shift;
if (flags)
{
if (j)
printf (", ");
printf ("%d,%d,%d", shift,
mn10300_operands[opcode->operands[i]].bits,flags);
j = 1;
numops++;
}
}
switch (numops)
{
case 0:
printf ("0,0,0");
case 1:
printf (",0,0,0");
}
printf ("}},\n");
}
printf ("{ 0,0,NULL,0,0,0,{0,0,0,0,0,0}},\n};\n");
}