[PATCH 13/37] target/ppc: Implement Vector Compare Quadword

From: matheus.ferst@eldorado.org.br
To: qemu-devel@nongnu.org, qemu-ppc@nongnu.org
Cc: danielhb413@gmail.com, richard.henderson@linaro.org,
	groug@kaod.org, clg@kaod.org,
	Matheus Ferst <matheus.ferst@eldorado.org.br>,
	david@gibson.dropbear.id.au
Subject: [PATCH 13/37] target/ppc: Implement Vector Compare Quadword
Date: Fri,  7 Jan 2022 15:56:29 -0300	[thread overview]
Message-ID: <20220107185653.1609775-14-matheus.ferst@eldorado.org.br> (raw)
In-Reply-To: <20220107185653.1609775-1-matheus.ferst@eldorado.org.br>

From: Matheus Ferst <matheus.ferst@eldorado.org.br>

Implement the following PowerISA v3.1 instructions:
vcmpsq: Vector Compare Signed Quadword
vcmpuq: Vector Compare Unsigned Quadword

Signed-off-by: Matheus Ferst <matheus.ferst@eldorado.org.br>
---
 target/ppc/insn32.decode            |  6 ++++
 target/ppc/translate/vmx-impl.c.inc | 45 +++++++++++++++++++++++++++++
 2 files changed, 51 insertions(+)

diff --git a/target/ppc/insn32.decode b/target/ppc/insn32.decode
index 45649f7d1d..605e66872e 100644
--- a/target/ppc/insn32.decode
+++ b/target/ppc/insn32.decode
@@ -60,6 +60,9 @@
 &VX             vrt vra vrb
 @VX             ...... vrt:5 vra:5 vrb:5 .......... .   &VX
 
+&VX_bf          bf vra vrb
+@VX_bf          ...... bf:3 .. vra:5 vrb:5 ...........          &VX_bf
+
 &VX_uim4        vrt uim vrb
 @VX_uim4        ...... vrt:5 . uim:4 vrb:5 ...........  &VX_uim4
 
@@ -404,6 +407,9 @@ VCMPNEZB        000100 ..... ..... ..... . 0100000111   @VC
 VCMPNEZH        000100 ..... ..... ..... . 0101000111   @VC
 VCMPNEZW        000100 ..... ..... ..... . 0110000111   @VC
 
+VCMPSQ          000100 ... -- ..... ..... 00101000001   @VX_bf
+VCMPUQ          000100 ... -- ..... ..... 00100000001   @VX_bf
+
 ## Vector Bit Manipulation Instruction
 
 VCFUGED         000100 ..... ..... ..... 10101001101    @VX
diff --git a/target/ppc/translate/vmx-impl.c.inc b/target/ppc/translate/vmx-impl.c.inc
index 302ef4370a..2c13fbeb39 100644
--- a/target/ppc/translate/vmx-impl.c.inc
+++ b/target/ppc/translate/vmx-impl.c.inc
@@ -1204,6 +1204,51 @@ static bool do_vcmpgtq(DisasContext *ctx, arg_VC *a, bool sign)
 TRANS(VCMPGTSQ, do_vcmpgtq, true)
 TRANS(VCMPGTUQ, do_vcmpgtq, false)
 
+static bool do_vcmpq(DisasContext *ctx, arg_VX_bf *a, bool sign)
+{
+    TCGv_i64 vra, vrb;
+    TCGLabel *gt, *lt, *done;
+
+    REQUIRE_INSNS_FLAGS2(ctx, ISA310);
+    REQUIRE_VECTOR(ctx);
+
+    vra = tcg_temp_local_new_i64();
+    vrb = tcg_temp_local_new_i64();
+    gt = gen_new_label();
+    lt = gen_new_label();
+    done = gen_new_label();
+
+    get_avr64(vra, a->vra, true);
+    get_avr64(vrb, a->vrb, true);
+    tcg_gen_brcond_i64((sign ? TCG_COND_GT : TCG_COND_GTU), vra, vrb, gt);
+    tcg_gen_brcond_i64((sign ? TCG_COND_LT : TCG_COND_LTU), vra, vrb, lt);
+
+    get_avr64(vra, a->vra, false);
+    get_avr64(vrb, a->vrb, false);
+    tcg_gen_brcond_i64(TCG_COND_GTU, vra, vrb, gt);
+    tcg_gen_brcond_i64(TCG_COND_LTU, vra, vrb, lt);
+
+    tcg_gen_movi_i32(cpu_crf[a->bf], CRF_EQ);
+    tcg_gen_br(done);
+
+    gen_set_label(gt);
+    tcg_gen_movi_i32(cpu_crf[a->bf], CRF_GT);
+    tcg_gen_br(done);
+
+    gen_set_label(lt);
+    tcg_gen_movi_i32(cpu_crf[a->bf], CRF_LT);
+    tcg_gen_br(done);
+
+    gen_set_label(done);
+    tcg_temp_free_i64(vra);
+    tcg_temp_free_i64(vrb);
+
+    return true;
+}
+
+TRANS(VCMPSQ, do_vcmpq, true)
+TRANS(VCMPUQ, do_vcmpq, false)
+
 GEN_VXRFORM(vcmpeqfp, 3, 3)
 GEN_VXRFORM(vcmpgefp, 3, 7)
 GEN_VXRFORM(vcmpgtfp, 3, 11)
-- 
2.25.1


