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Add vsumsws, vsum2sws, and vsum4{sbs, shs,ubs} instructions.

Browse source 
Signed-off-by: Nathan Froyd <froydnj@codesourcery.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6189 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
aurel32 2009-01-04 22:13:21 +00:00
parent cbfb6ae9b3
commit 8142cddda2
3 changed files with 113 additions and 0 deletions
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103
target-ppc/op_helper.c
View file

@ -2534,6 +2534,109 @@ void helper_vsubcuw (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b)
}
}
void helper_vsumsws (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b)
{
int64_t t;
int i, upper;
ppc_avr_t result;
int sat = 0;
#if defined(WORDS_BIGENDIAN)
upper = ARRAY_SIZE(r->s32)-1;
#else
upper = 0;
#endif
t = (int64_t)b->s32[upper];
for (i = 0; i < ARRAY_SIZE(r->s32); i++) {
t += a->s32[i];
result.s32[i] = 0;
}
result.s32[upper] = cvtsdsw(t, &sat);
*r = result;
if (sat) {
env->vscr |= (1 << VSCR_SAT);
}
}
void helper_vsum2sws (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b)
{
int i, j, upper;
ppc_avr_t result;
int sat = 0;
#if defined(WORDS_BIGENDIAN)
upper = 1;
#else
upper = 0;
#endif
for (i = 0; i < ARRAY_SIZE(r->u64); i++) {
int64_t t = (int64_t)b->s32[upper+i*2];
result.u64[i] = 0;
for (j = 0; j < ARRAY_SIZE(r->u64); j++) {
t += a->s32[2*i+j];
}
result.s32[upper+i*2] = cvtsdsw(t, &sat);
}
*r = result;
if (sat) {
env->vscr |= (1 << VSCR_SAT);
}
}
void helper_vsum4sbs (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b)
{
int i, j;
int sat = 0;
for (i = 0; i < ARRAY_SIZE(r->s32); i++) {
int64_t t = (int64_t)b->s32[i];
for (j = 0; j < ARRAY_SIZE(r->s32); j++) {
t += a->s8[4*i+j];
}
r->s32[i] = cvtsdsw(t, &sat);
}
if (sat) {
env->vscr |= (1 << VSCR_SAT);
}
}
void helper_vsum4shs (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b)
{
int sat = 0;
int i;
for (i = 0; i < ARRAY_SIZE(r->s32); i++) {
int64_t t = (int64_t)b->s32[i];
t += a->s16[2*i] + a->s16[2*i+1];
r->s32[i] = cvtsdsw(t, &sat);
}
if (sat) {
env->vscr |= (1 << VSCR_SAT);
}
}
void helper_vsum4ubs (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b)
{
int i, j;
int sat = 0;
for (i = 0; i < ARRAY_SIZE(r->u32); i++) {
uint64_t t = (uint64_t)b->u32[i];
for (j = 0; j < ARRAY_SIZE(r->u32); j++) {
t += a->u8[4*i+j];
}
r->u32[i] = cvtuduw(t, &sat);
}
if (sat) {
env->vscr |= (1 << VSCR_SAT);
}
}
#if defined(WORDS_BIGENDIAN)
#define UPKHI 1
#define UPKLO 0