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Fri Nov 8 16:19:55 1996 Martin M. Hunt <hunt@pizza.cygnus.com>

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* d10v-sim.h (simops): Add flag is_long.
	(State): Add pc_changed.  Instructions which update the PC should
	use the JMP macro which sets this.
	(JMP): New macro.  Sets the PC and the pc_changed flag.

	* gencode.c (write_opcodes): Add is_long field.

	* interp.c (lookup_hash): If we blindly apply a short opcode's mask
	to a long opcode we could get a false match.  Check the opcode size.
	(hash): Add a size field to the hash table.
	(sim_open): Initialize size field in hash table.
	(sim_resume): Change to logic for setting the PC.  Used to increment the
	PC if it had not been changed.  This didn't allow single-instruction loops.
	Now checks the flag State.pc_changed.  Also now stops when ^C is received.
	(dmem_addr): Fix translation of data segments to unified memory.
	(sim_ctrl_c): New function.  When ^C is received, set stop_simulator flag.

	* simops.c: Changed all branch and jump instructions to use new JMP macro.
	(OP_20000000): Corrected trace information to show this is a ldi.l, not
	a ldi.s instruction.
This commit is contained in:
Martin Hunt 1996-11-09 00:38:07 +00:00
parent 4dc42997c3
commit 849c575f97
1 changed files with 146 additions and 0 deletions
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146
sim/d10v/gencode.c Normal file
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@ -0,0 +1,146 @@
#include "d10v_sim.h"
static void write_header PARAMS ((void));
static void write_opcodes PARAMS ((void));
static void write_template PARAMS ((void));
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 d10v_opcode *opcode;
for (opcode = (struct d10v_opcode *)d10v_opcodes; opcode->name; opcode++)
if (opcode->format != OPCODE_FAKE)
printf("void OP_%X PARAMS ((void));\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 d10v_opcode *opcode;
int i,j;
printf ("#include \"d10v_sim.h\"\n");
printf ("#include \"simops.h\"\n");
for (opcode = (struct d10v_opcode *)d10v_opcodes; opcode->name; opcode++)
{
if (opcode->format != OPCODE_FAKE)
{
printf("/* %s */\nvoid\nOP_%X ()\n{\n",opcode->name,opcode->opcode);
/* count operands */
j = 0;
for (i=0;i<6;i++)
{
int flags = d10v_operands[opcode->operands[i]].flags;
if ((flags & OPERAND_REG) || (flags & OPERAND_NUM) || (flags & OPERAND_ADDR))
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");
}
}
}
long Opcodes[512];
static int curop=0;
check_opcodes( long op)
{
int i;
for (i=0;i<curop;i++)
if (Opcodes[i] == op)
fprintf(stderr,"DUPLICATE OPCODES: %x\n",op);
}
static void
write_opcodes ()
{
struct d10v_opcode *opcode;
int i, j;
/* write out opcode table */
printf ("#include \"d10v_sim.h\"\n");
printf ("#include \"simops.h\"\n\n");
printf ("struct simops Simops[] = {\n");
for (opcode = (struct d10v_opcode *)d10v_opcodes; opcode->name; opcode++)
{
if (opcode->format != OPCODE_FAKE)
{
printf (" { %ld,%d,%ld,%d,%d,%d,%d,OP_%X,", opcode->opcode,
(opcode->format & LONG_OPCODE) ? 1 : 0, opcode->mask, opcode->format,
opcode->cycles, opcode->unit, opcode->exec_type, opcode->opcode);
/* REMOVE ME */
check_opcodes (opcode->opcode);
Opcodes[curop++] = opcode->opcode;
j = 0;
for (i=0;i<6;i++)
{
int flags = d10v_operands[opcode->operands[i]].flags;
if ((flags & OPERAND_REG) || (flags & OPERAND_NUM) || (flags & OPERAND_ADDR))
j++;
}
printf ("%d,{",j);
j = 0;
for (i=0;i<6;i++)
{
int flags = d10v_operands[opcode->operands[i]].flags;
int shift = d10v_operands[opcode->operands[i]].shift;
if ((flags & OPERAND_REG) || (flags & OPERAND_NUM)|| (flags & OPERAND_ADDR))
{
if (j)
printf (", ");
if ((flags & OPERAND_REG) && (opcode->format == LONG_L))
shift += 15;
printf ("%d,%d,%d",shift,d10v_operands[opcode->operands[i]].bits,flags);
j = 1;
}
}
printf ("}},\n");
}
}
printf ("{ 0,0,0,0,0,0,NULL,0,{ }},\n};\n");
}