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target/ppc: Implement pdepd instruction

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Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Matheus Ferst <matheus.ferst@eldorado.org.br>
Message-Id: <20211029202424.175401-10-matheus.ferst@eldorado.org.br>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Matheus Ferst 2021-10-29 17:23:59 -03:00 committed by David Gibson
parent f356b3ba47
commit 21ba6e5873
4 changed files with 34 additions and 0 deletions
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1
target/ppc/helper.h
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@ -48,6 +48,7 @@ DEF_HELPER_FLAGS_2(cmpb, TCG_CALL_NO_RWG_SE, tl, tl, tl)
DEF_HELPER_3(sraw, tl, env, tl, tl)
DEF_HELPER_FLAGS_2(cfuged, TCG_CALL_NO_RWG_SE, i64, i64, i64)
#if defined(TARGET_PPC64)
DEF_HELPER_FLAGS_2(PDEPD, TCG_CALL_NO_RWG_SE, i64, i64, i64)
DEF_HELPER_FLAGS_2(cmpeqb, TCG_CALL_NO_RWG_SE, i32, tl, tl)
DEF_HELPER_FLAGS_1(popcntw, TCG_CALL_NO_RWG_SE, tl, tl)
DEF_HELPER_FLAGS_2(bpermd, TCG_CALL_NO_RWG_SE, i64, i64, i64)

1
target/ppc/insn32.decode
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@ -126,6 +126,7 @@ ADDPCIS 010011 ..... ..... .......... 00010 . @DX
CFUGED 011111 ..... ..... ..... 0011011100 - @X
CNTLZDM 011111 ..... ..... ..... 0000111011 - @X
CNTTZDM 011111 ..... ..... ..... 1000111011 - @X
PDEPD 011111 ..... ..... ..... 0010011100 - @X
### Float-Point Load Instructions

20
target/ppc/int_helper.c
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@ -386,6 +386,26 @@ uint64_t helper_cfuged(uint64_t src, uint64_t mask)
return left | (right >> n);
}
#if defined(TARGET_PPC64)
uint64_t helper_PDEPD(uint64_t src, uint64_t mask)
{
int i, o;
uint64_t result = 0;
if (mask == -1) {
return src;
}
for (i = 0; mask != 0; i++) {
o = ctz64(mask);
mask &= mask - 1;
result |= ((src >> i) & 1) << o;
}
return result;
}
#endif
/*****************************************************************************/
/* PowerPC 601 specific instructions (POWER bridge) */
target_ulong helper_div(CPUPPCState *env, target_ulong arg1, target_ulong arg2)

12
target/ppc/translate/fixedpoint-impl.c.inc
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@ -469,3 +469,15 @@ static bool trans_CNTTZDM(DisasContext *ctx, arg_X *a)
#endif
return true;
}
static bool trans_PDEPD(DisasContext *ctx, arg_X *a)
{
REQUIRE_64BIT(ctx);
REQUIRE_INSNS_FLAGS2(ctx, ISA310);
#if defined(TARGET_PPC64)
gen_helper_PDEPD(cpu_gpr[a->ra], cpu_gpr[a->rt], cpu_gpr[a->rb]);
#else
qemu_build_not_reached();
#endif
return true;
}