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target-ppc: Add xxextractuw instruction

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xxextractuw: VSX Vector Extract Unsigned Word

Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Nikunj A Dadhania 2017-01-06 11:44:43 +05:30 • committed by David Gibson
parent 0f358a0710
commit 8ad901e558
4 changed files with 62 additions and 0 deletions
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26
target/ppc/int_helper.c
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@ -2001,6 +2001,32 @@ VEXTRACT(uw, u32)
VEXTRACT(d, u64)
#undef VEXTRACT
void helper_xxextractuw(CPUPPCState *env, target_ulong xtn,
target_ulong xbn, uint32_t index)
{
ppc_vsr_t xt, xb;
size_t es = sizeof(uint32_t);
uint32_t ext_index;
int i;
getVSR(xbn, &xb, env);
memset(&xt, 0, sizeof(xt));
#if defined(HOST_WORDS_BIGENDIAN)
ext_index = index;
for (i = 0; i < es; i++, ext_index++) {
xt.u8[8 - es + i] = xb.u8[ext_index % 16];
}
#else
ext_index = 15 - index;
for (i = es - 1; i >= 0; i--, ext_index--) {
xt.u8[8 + i] = xb.u8[ext_index % 16];
}
#endif
putVSR(xtn, &xt, env);
}
#define VEXT_SIGNED(name, element, mask, cast, recast) \
void helper_##name(ppc_avr_t *r, ppc_avr_t *b) \
{ \