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target-ppc: add vclzlsbb/vctzlsbb instructions

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The following vector instructions are added from ISA 3.0.

vclzlsbb - Vector Count Leading Zero Least-Significant Bits Byte
vctzlsbb - Vector Count Trailing Zero Least-Significant Bits Byte

Signed-off-by: Rajalakshmi Srinivasaraghavan <raji@linux.vnet.ibm.com>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Rajalakshmi Srinivasaraghavan 2016-09-28 11:15:18 +05:30 committed by David Gibson
parent 0fa5936434
commit 4879538c99
4 changed files with 48 additions and 0 deletions
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2
target-ppc/helper.h
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@ -343,6 +343,8 @@ 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_1(vclzlsbb, tl, avr)
DEF_HELPER_1(vctzlsbb, tl, avr)
DEF_HELPER_3(vbpermd, void, avr, avr, avr)
DEF_HELPER_3(vbpermq, void, avr, avr, avr)
DEF_HELPER_2(vgbbd, void, avr, avr)

30
target-ppc/int_helper.c
View File

@ -881,6 +881,36 @@ VCT(uxs, cvtsduw, u32)
VCT(sxs, cvtsdsw, s32)
#undef VCT
target_ulong helper_vclzlsbb(ppc_avr_t *r)
{
target_ulong count = 0;
int i;
VECTOR_FOR_INORDER_I(i, u8) {
if (r->u8[i] & 0x01) {
break;
}
count++;
}
return count;
}
target_ulong helper_vctzlsbb(ppc_avr_t *r)
{
target_ulong count = 0;
int i;
#if defined(HOST_WORDS_BIGENDIAN)
for (i = ARRAY_SIZE(r->u8) - 1; i >= 0; i--) {
#else
for (i = 0; i < ARRAY_SIZE(r->u8); i++) {
#endif
if (r->u8[i] & 0x01) {
break;
}
count++;
}
return count;
}
void helper_vmhaddshs(CPUPPCState *env, ppc_avr_t *r, ppc_avr_t *a,
ppc_avr_t *b, ppc_avr_t *c)
{

14
target-ppc/translate/vmx-impl.inc.c
View File

@ -593,6 +593,18 @@ static void glue(gen_, name)(DisasContext *ctx) \
tcg_temp_free_ptr(rd); \
}
#define GEN_VXFORM_NOA_3(name, opc2, opc3, opc4) \
static void glue(gen_, name)(DisasContext *ctx) \
{ \
TCGv_ptr rb; \
if (unlikely(!ctx->altivec_enabled)) { \
gen_exception(ctx, POWERPC_EXCP_VPU); \
return; \
} \
rb = gen_avr_ptr(rB(ctx->opcode)); \
gen_helper_##name(cpu_gpr[rD(ctx->opcode)], rb); \
tcg_temp_free_ptr(rb); \
}
GEN_VXFORM_NOA(vupkhsb, 7, 8);
GEN_VXFORM_NOA(vupkhsh, 7, 9);
GEN_VXFORM_NOA(vupkhsw, 7, 25);
@ -807,6 +819,8 @@ GEN_VXFORM_NOA_2(vctzb, 1, 24, 28)
GEN_VXFORM_NOA_2(vctzh, 1, 24, 29)
GEN_VXFORM_NOA_2(vctzw, 1, 24, 30)
GEN_VXFORM_NOA_2(vctzd, 1, 24, 31)
GEN_VXFORM_NOA_3(vclzlsbb, 1, 24, 0)
GEN_VXFORM_NOA_3(vctzlsbb, 1, 24, 1)
GEN_VXFORM_NOA(vpopcntb, 1, 28)
GEN_VXFORM_NOA(vpopcnth, 1, 29)
GEN_VXFORM_NOA(vpopcntw, 1, 30)

2
target-ppc/translate/vmx-ops.inc.c
View File

@ -219,6 +219,8 @@ GEN_VXFORM_300_EO(vctzb, 0x01, 0x18, 0x1C),
GEN_VXFORM_300_EO(vctzh, 0x01, 0x18, 0x1D),
GEN_VXFORM_300_EO(vctzw, 0x01, 0x18, 0x1E),
GEN_VXFORM_300_EO(vctzd, 0x01, 0x18, 0x1F),
GEN_VXFORM_300_EO(vclzlsbb, 0x01, 0x18, 0x0),
GEN_VXFORM_300_EO(vctzlsbb, 0x01, 0x18, 0x1),
GEN_VXFORM_300(vpermr, 0x1D, 0xFF),
#define GEN_VXFORM_NOA(name, opc2, opc3) \