target/ppc: Implement pdepd instruction

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>

diff --git a/target/ppc/helper.h b/target/ppc/helper.h
index 4076aa281e9c1bd534ffc588b1594a6de9155ae8..3e22957559b1766874d9e5d52e55dc14c9e533f1 100644 (file)
--- a/target/ppc/helper.h
+++ b/target/ppc/helper.h
@@ -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)

diff --git a/target/ppc/insn32.decode b/target/ppc/insn32.decode
index ee8c90d520e9ad5e9484df2e04dd1a12ac105725..c47a6a02e19bbde591efc4621277101b4a4ecddc 100644 (file)
--- a/target/ppc/insn32.decode
+++ b/target/ppc/insn32.decode
@@ -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
 

diff --git a/target/ppc/int_helper.c b/target/ppc/int_helper.c
index eeb7781a9e805e3686fb3ae2ff4930df392c7ec4..337bb7f4d37bb0aa2a1966f3c561c7530b3cbc7f 100644 (file)
--- a/target/ppc/int_helper.c
+++ b/target/ppc/int_helper.c
@@ -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)

diff --git a/target/ppc/translate/fixedpoint-impl.c.inc b/target/ppc/translate/fixedpoint-impl.c.inc
index d3dc0a474e397bae447efedcee608d5bb6fd276f..f0bf69fbac104816f1264bf943057ee8db6b6846 100644 (file)
--- a/target/ppc/translate/fixedpoint-impl.c.inc
+++ b/target/ppc/translate/fixedpoint-impl.c.inc
@@ -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;
+}