target-ppc: Add xviexpdp instruction

xviexpdp: VSX Vector Insert Exponent Dual Precision Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com> Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
qemu · Jan 30, 2017 · e385e4b · e385e4b
1 parent d903140
commit e385e4b
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Showing 2 changed files with 27 additions and 0 deletions.
diff --git a/target/ppc/translate/vsx-impl.inc.c b/target/ppc/translate/vsx-impl.inc.c
@@ -1370,6 +1370,32 @@ static void gen_xviexpsp(DisasContext *ctx)
     tcg_temp_free_i64(t0);
 }
 
+static void gen_xviexpdp(DisasContext *ctx)
+{
+    TCGv_i64 xth = cpu_vsrh(xT(ctx->opcode));
+    TCGv_i64 xtl = cpu_vsrl(xT(ctx->opcode));
+    TCGv_i64 xah = cpu_vsrh(xA(ctx->opcode));
+    TCGv_i64 xal = cpu_vsrl(xA(ctx->opcode));
+    TCGv_i64 xbh = cpu_vsrh(xB(ctx->opcode));
+    TCGv_i64 xbl = cpu_vsrl(xB(ctx->opcode));
+    TCGv_i64 t0;
+
+    if (unlikely(!ctx->vsx_enabled)) {
+        gen_exception(ctx, POWERPC_EXCP_VSXU);
+        return;
+    }
+    t0 = tcg_temp_new_i64();
+    tcg_gen_andi_i64(xth, xah, 0x800FFFFFFFFFFFFF);
+    tcg_gen_andi_i64(t0, xbh, 0x7FF);
+    tcg_gen_shli_i64(t0, t0, 52);
+    tcg_gen_or_i64(xth, xth, t0);
+    tcg_gen_andi_i64(xtl, xal, 0x800FFFFFFFFFFFFF);
+    tcg_gen_andi_i64(t0, xbl, 0x7FF);
+    tcg_gen_shli_i64(t0, t0, 52);
+    tcg_gen_or_i64(xtl, xtl, t0);
+    tcg_temp_free_i64(t0);
+}
+
 #undef GEN_XX2FORM
 #undef GEN_XX3FORM
 #undef GEN_XX2IFORM

diff --git a/target/ppc/translate/vsx-ops.inc.c b/target/ppc/translate/vsx-ops.inc.c
@@ -125,6 +125,7 @@ GEN_VSX_XFORM_300(xsiexpqp, 0x4, 0x1B, 0x00000001),
 #endif
 
 GEN_XX3FORM(xviexpsp, 0x00, 0x1B, PPC2_ISA300),
+GEN_XX3FORM(xviexpdp, 0x00, 0x1F, PPC2_ISA300),
 
 GEN_XX2FORM(xvabsdp, 0x12, 0x1D, PPC2_VSX),
 GEN_XX2FORM(xvnabsdp, 0x12, 0x1E, PPC2_VSX),