[PULL 46/54] target/ppc: moved XXSPLTIB to using decodetree

[David Gibson <david@gibson.dropbear.id.au>]

From: "Bruno Larsen (billionai)" <bruno.larsen@eldorado.org.br>

Changed the function that handles XXSPLTIB emulation to using
decodetree, but still use the same logic as before

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Bruno Larsen (billionai) <bruno.larsen@eldorado.org.br>
Signed-off-by: Matheus Ferst <matheus.ferst@eldorado.org.br>
Message-Id: <20211104123719.323713-20-matheus.ferst@eldorado.org.br>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
---
 target/ppc/insn32.decode            |  5 +++++
 target/ppc/translate/vsx-impl.c.inc | 20 ++++++--------------
 target/ppc/translate/vsx-ops.c.inc  |  1 -
 3 files changed, 11 insertions(+), 15 deletions(-)

diff --git a/target/ppc/insn32.decode b/target/ppc/insn32.decode
index 5d425ec076..fd73946122 100644
--- a/target/ppc/insn32.decode
+++ b/target/ppc/insn32.decode
@@ -96,6 +96,10 @@
 &X_bfl          bf l:bool ra rb
 @X_bfl          ...... bf:3 - l:1 ra:5 rb:5 ..........- &X_bfl
 
+%x_xt           0:1 21:5
+&X_imm8         xt imm:uint8_t
+@X_imm8         ...... ..... .. imm:8 .......... .              &X_imm8 xt=%x_xt
+
 &X_tb_sp_rc     rt rb sp rc:bool
 @X_tb_sp_rc     ...... rt:5 sp:2 ... rb:5 .......... rc:1       &X_tb_sp_rc
 
@@ -414,4 +418,5 @@ STXVPX          011111 ..... ..... ..... 0111001101 -   @X_TSXP
 
 ## VSX splat instruction
 
+XXSPLTIB        111100 ..... 00 ........ 0101101000 .   @X_imm8
 XXSPLTW         111100 ..... ---.. ..... 010100100 . .  @XX2
diff --git a/target/ppc/translate/vsx-impl.c.inc b/target/ppc/translate/vsx-impl.c.inc
index ce8796d139..ad25a0daf0 100644
--- a/target/ppc/translate/vsx-impl.c.inc
+++ b/target/ppc/translate/vsx-impl.c.inc
@@ -1455,23 +1455,15 @@ static bool trans_XXSPLTW(DisasContext *ctx, arg_XX2 *a)
 
 #define pattern(x) (((x) & 0xff) * (~(uint64_t)0 / 0xff))
 
-static void gen_xxspltib(DisasContext *ctx)
+static bool trans_XXSPLTIB(DisasContext *ctx, arg_X_imm8 *a)
 {
-    uint8_t uim8 = IMM8(ctx->opcode);
-    int rt = xT(ctx->opcode);
-
-    if (rt < 32) {
-        if (unlikely(!ctx->vsx_enabled)) {
-            gen_exception(ctx, POWERPC_EXCP_VSXU);
-            return;
-        }
+    if (a->xt < 32) {
+        REQUIRE_VSX(ctx);
     } else {
-        if (unlikely(!ctx->altivec_enabled)) {
-            gen_exception(ctx, POWERPC_EXCP_VPU);
-            return;
-        }
+        REQUIRE_VECTOR(ctx);
     }
-    tcg_gen_gvec_dup_imm(MO_8, vsr_full_offset(rt), 16, 16, uim8);
+    tcg_gen_gvec_dup_imm(MO_8, vsr_full_offset(a->xt), 16, 16, a->imm);
+    return true;
 }
 
 static void gen_xxsldwi(DisasContext *ctx)
diff --git a/target/ppc/translate/vsx-ops.c.inc b/target/ppc/translate/vsx-ops.c.inc
index b669b64d35..152d1e5c3b 100644
--- a/target/ppc/translate/vsx-ops.c.inc
+++ b/target/ppc/translate/vsx-ops.c.inc
@@ -348,7 +348,6 @@ GEN_XX3FORM(xxmrghw, 0x08, 0x02, PPC2_VSX),
 GEN_XX3FORM(xxmrglw, 0x08, 0x06, PPC2_VSX),
 GEN_XX3FORM(xxperm, 0x08, 0x03, PPC2_ISA300),
 GEN_XX3FORM(xxpermr, 0x08, 0x07, PPC2_ISA300),
-GEN_XX1FORM(xxspltib, 0x08, 0x0B, PPC2_ISA300),
 GEN_XX3FORM_DM(xxsldwi, 0x08, 0x00),
 GEN_XX2FORM_EXT(xxextractuw, 0x0A, 0x0A, PPC2_ISA300),
 GEN_XX2FORM_EXT(xxinsertw, 0x0A, 0x0B, PPC2_ISA300),
-- 
2.33.1