* interp.c (do_format_5): Get operands correctly and

call the target function.
        (sim_resume): Don't do a PC update for format 5 instructions.
        * simops.c: Handle "jarl" and "jmp" instructions.
This commit is contained in:
Jeff Law
1996-08-30 04:27:48 +00:00
parent 3095b8dfc5
commit e9b6cbaca5
3 changed files with 39 additions and 12 deletions

View File

@@ -1,5 +1,10 @@
Thu Aug 29 13:53:29 1996 Jeffrey A Law (law@cygnus.com)
* interp.c (do_format_5): Get operands correctly and
call the target function.
(sim_resume): Don't do a PC update for format 5 instructions.
* simops.c: Handle "jarl" and "jmp" instructions.
* simops.c: Fix minor typos. Handle "cmp", "setf", "tst"
"di", and "ei" instructions correctly.

View File

@@ -186,7 +186,13 @@ static void
do_format_5 (insn)
uint32 insn;
{
struct hash_entry *h;
printf("format 5 0x%x\n", insn);
h = lookup_hash (insn);
OP[0] = ((insn & 0x3f) | (((insn >> 17) & 0x7fff) << 6)) << 1;
OP[1] = (insn >> 11) & 0x1f;
(h->ops->func) ();
}
static void
@@ -380,7 +386,7 @@ sim_resume (step, siggnal)
else if ((opcode & 0x3E) == 0x3C)
{
do_format_5 (inst);
PC += 4;
/* No PC update, it's done in the instruction. */
}
else if ((opcode & 0x3F) == 0x3E)
{

View File

@@ -291,11 +291,32 @@ OP_58F ()
State.pc += 2;
}
/* jmp [reg1] */
void
OP_660 ()
OP_60 ()
{
/* interp.c will bump this by +2, so correct for it here. */
State.pc = State.regs[OP[0]] - 2;
}
/* jarl disp22, reg */
void
OP_780 ()
{
unsigned int op0, opc;
int temp;
temp = OP[0];
temp = (temp << 10) >> 10;
op0 = temp;
opc = State.pc;
State.pc += temp;
/* Gross. jarl X,r0 is really jr and doesn't save its result. */
if (OP[1] != 0)
State.regs[OP[1]] = opc + 4;
}
/* add reg, reg */
void
@@ -641,21 +662,11 @@ OP_10720 ()
{
}
void
OP_780 ()
{
}
void
OP_720 ()
{
}
void
OP_60 ()
{
}
void
OP_87C0 ()
{
@@ -1094,3 +1105,8 @@ OP_700 ()
{
}
void
OP_660 ()
{
}