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* Modified sky PKE behavior according to new SCEI specs.

This commit is contained in:
Frank Ch. Eigler 1998-03-28 00:35:43 +00:00
parent 666973d7d7
commit b59e0b6815
1 changed files with 11 additions and 9 deletions
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20
sim/mips/sky-pke.c
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@ -1982,20 +1982,12 @@ pke_code_unpack(struct pke_device* me, unsigned_4 pkecode)
switch(PKE_REG_MASK_GET(me, MODE, MDE))
{
case PKE_MODE_ADDROW: /* add row registers to output data */
case PKE_MODE_ACCROW: /* same .. later conditionally accumulate */
for(i=0; i<4; i++)
/* exploit R0..R3 contiguity */
unpacked_data[i] += me->regs[PKE_REG_R0 + i][0];
break;
case PKE_MODE_ACCROW: /* add row registers to output data; accumulate */
for(i=0; i<4; i++)
{
/* exploit R0..R3 contiguity */
unpacked_data[i] += me->regs[PKE_REG_R0 + i][0];
me->regs[PKE_REG_R0 + i][0] = unpacked_data[i];
}
break;
case PKE_MODE_INPUT: /* pass data through */
default: /* specified as undefined */
;
@ -2016,6 +2008,11 @@ pke_code_unpack(struct pke_device* me, unsigned_4 pkecode)
{
case PKE_MASKREG_INPUT:
masked_value = & unpacked_data[i];
/* conditionally accumulate */
if(PKE_REG_MASK_GET(me, MODE, MDE) == PKE_MODE_ACCROW)
me->regs[PKE_REG_R0 + i][0] = unpacked_data[i];
break;
case PKE_MASKREG_ROW: /* exploit R0..R3 contiguity */
@ -2044,6 +2041,11 @@ pke_code_unpack(struct pke_device* me, unsigned_4 pkecode)
{
/* no mask - just copy over entire unpacked quadword */
memcpy(vu_new_data, unpacked_data, sizeof(unpacked_data));
/* conditionally store accumulated row results */
if(PKE_REG_MASK_GET(me, MODE, MDE) == PKE_MODE_ACCROW)
for(i=0; i<4; i++)
me->regs[PKE_REG_R0 + i][0] = unpacked_data[i];
}
/* write new VU data word at address; reverse words if needed */