[PATCH v2 12/15] target/ppc: Implement prefixed integer load instructions

[Luis Pires]

From: Richard Henderson <richard.henderson@linaro.org>

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/ppc/insn64.decode                   | 15 ++++++
 target/ppc/translate/fixedpoint-impl.c.inc | 60 ++++++++++++++++++++++
 2 files changed, 75 insertions(+)

diff --git a/target/ppc/insn64.decode b/target/ppc/insn64.decode
index 9bef32a845..2e08d89e62 100644
--- a/target/ppc/insn64.decode
+++ b/target/ppc/insn64.decode
@@ -26,6 +26,21 @@
                 ...... rt:5 ra:5 ................       \
                 &PLS_D si=%pls_si
 
+### Fixed-Point Load Instructions
+
+PLBZ            000001 10 0--.-- .................. \
+                100010 ..... ..... ................     @PLS_D
+PLHZ            000001 10 0--.-- .................. \
+                101000 ..... ..... ................     @PLS_D
+PLHA            000001 10 0--.-- .................. \
+                101010 ..... ..... ................     @PLS_D
+PLWZ            000001 10 0--.-- .................. \
+                100000 ..... ..... ................     @PLS_D
+PLWA            000001 00 0--.-- .................. \
+                101001 ..... ..... ................     @PLS_D
+PLD             000001 00 0--.-- .................. \
+                111001 ..... ..... ................     @PLS_D
+
 ### Fixed-Point Arithmetic Instructions
 
 PADDI           000001 10 0--.-- ..................     \
diff --git a/target/ppc/translate/fixedpoint-impl.c.inc 
b/target/ppc/translate/fixedpoint-impl.c.inc
index e15e379931..80f849fc4a 100644
--- a/target/ppc/translate/fixedpoint-impl.c.inc
+++ b/target/ppc/translate/fixedpoint-impl.c.inc
@@ -218,6 +218,66 @@ static bool trans_LDUX(DisasContext *ctx, arg_X *a)
     return do_ldst_X(ctx, a, true, false, MO_Q);
 }
 
+static bool do_ldst_PLS_D(DisasContext *ctx, arg_PLS_D *a,
+                          bool store, MemOp mop)
+{
+    TCGv ea;
+
+    if (!resolve_PLS_D(ctx, a)) {
+        return false;
+    }
+    gen_set_access_type(ctx, ACCESS_INT);
+
+    ea = tcg_temp_new();
+    if (a->ra) {
+        tcg_gen_addi_tl(ea, cpu_gpr[a->ra], a->si);
+    } else {
+        tcg_gen_movi_tl(ea, a->si);
+    }
+    if (NARROW_MODE(ctx)) {
+        tcg_gen_ext32u_tl(ea, ea);
+    }
+    mop ^= ctx->default_tcg_memop_mask;
+    if (store) {
+        tcg_gen_qemu_st_tl(cpu_gpr[a->rt], ea, ctx->mem_idx, mop);
+    } else {
+        tcg_gen_qemu_ld_tl(cpu_gpr[a->rt], ea, ctx->mem_idx, mop);
+    }
+    tcg_temp_free(ea);
+
+    return true;
+}
+
+static bool trans_PLBZ(DisasContext *ctx, arg_PLS_D *a)
+{
+    return do_ldst_PLS_D(ctx, a, false, MO_UB);
+}
+
+static bool trans_PLHZ(DisasContext *ctx, arg_PLS_D *a)
+{
+    return do_ldst_PLS_D(ctx, a, false, MO_UW);
+}
+
+static bool trans_PLHA(DisasContext *ctx, arg_PLS_D *a)
+{
+    return do_ldst_PLS_D(ctx, a, false, MO_SW);
+}
+
+static bool trans_PLWZ(DisasContext *ctx, arg_PLS_D *a)
+{
+    return do_ldst_PLS_D(ctx, a, false, MO_UL);
+}
+
+static bool trans_PLWA(DisasContext *ctx, arg_PLS_D *a)
+{
+    return do_ldst_PLS_D(ctx, a, false, MO_SL);
+}
+
+static bool trans_PLD(DisasContext *ctx, arg_PLS_D *a)
+{
+    return do_ldst_PLS_D(ctx, a, false, MO_Q);
+}
+
 static bool trans_ADDI(DisasContext *ctx, arg_D *a)
 {
     if (a->ra) {
-- 
2.25.1