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target-ppc: Altivec 2.07: vbpermq Instruction

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This patch adds the Vector Bit Permute Quadword (vbpermq) instruction
introduced in Power ISA Version 2.07.

Signed-off-by: Tom Musta <tommusta@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Tom Musta 2014-02-12 15:23:12 -06:00 committed by Alexander Graf
parent b41da4ebb2
commit 4d82038e41
3 changed files with 34 additions and 0 deletions
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1
target-ppc/helper.h
View File

@ -303,6 +303,7 @@ DEF_HELPER_2(vpopcntb, void, avr, avr)
DEF_HELPER_2(vpopcnth, void, avr, avr)
DEF_HELPER_2(vpopcntw, void, avr, avr)
DEF_HELPER_2(vpopcntd, void, avr, avr)
DEF_HELPER_3(vbpermq, void, avr, avr, avr)
DEF_HELPER_2(xsadddp, void, env, i32)
DEF_HELPER_2(xssubdp, void, env, i32)

31
target-ppc/int_helper.c
View File

@ -1038,6 +1038,37 @@ void helper_vperm(CPUPPCState *env, ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b,
*r = result;
}
#if defined(HOST_WORDS_BIGENDIAN)
#define VBPERMQ_INDEX(avr, i) ((avr)->u8[(i)])
#define VBPERMQ_DW(index) (((index) & 0x40) != 0)
#else
#define VBPERMQ_INDEX(avr, i) ((avr)->u8[15-(i)])
#define VBPERMQ_DW(index) (((index) & 0x40) == 0)
#endif
void helper_vbpermq(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b)
{
int i;
uint64_t perm = 0;
VECTOR_FOR_INORDER_I(i, u8) {
int index = VBPERMQ_INDEX(b, i);
if (index < 128) {
uint64_t mask = (1ull << (63-(index & 0x3F)));
if (a->u64[VBPERMQ_DW(index)] & mask) {
perm |= (0x8000 >> i);
}
}
}
r->u64[HI_IDX] = perm;
r->u64[LO_IDX] = 0;
}
#undef VBPERMQ_INDEX
#undef VBPERMQ_DW
#if defined(HOST_WORDS_BIGENDIAN)
#define PKBIG 1
#else

2
target-ppc/translate.c
View File

@ -7360,6 +7360,7 @@ GEN_VXFORM_DUAL(vclzw, PPC_NONE, PPC2_ALTIVEC_207, \
vpopcntw, PPC_NONE, PPC2_ALTIVEC_207)
GEN_VXFORM_DUAL(vclzd, PPC_NONE, PPC2_ALTIVEC_207, \
vpopcntd, PPC_NONE, PPC2_ALTIVEC_207)
GEN_VXFORM(vbpermq, 6, 21);
/*** VSX extension ***/
@ -10609,6 +10610,7 @@ GEN_VXFORM_DUAL(vclzh, vpopcnth, 1, 29, PPC_NONE, PPC2_ALTIVEC_207),
GEN_VXFORM_DUAL(vclzw, vpopcntw, 1, 30, PPC_NONE, PPC2_ALTIVEC_207),
GEN_VXFORM_DUAL(vclzd, vpopcntd, 1, 31, PPC_NONE, PPC2_ALTIVEC_207),
GEN_VXFORM_207(vbpermq, 6, 21),
GEN_HANDLER_E(lxsdx, 0x1F, 0x0C, 0x12, 0, PPC_NONE, PPC2_VSX),
GEN_HANDLER_E(lxsiwax, 0x1F, 0x0C, 0x02, 0, PPC_NONE, PPC2_VSX207),