[PATCH v4 47/47] target/ppc: implement lxvr[bhwd]/stxvr[bhwd]x

[matheus . ferst]

From: Lucas Coutinho <lucas.coutinho@eldorado.org.br>

Implement the following PowerISA v3.1 instuctions:
lxvrbx: Load VSX Vector Rightmost Byte Indexed X-form
lxvrhx: Load VSX Vector Rightmost Halfword Indexed X-form
lxvrwx: Load VSX Vector Rightmost Word Indexed X-form
lxvrdx: Load VSX Vector Rightmost Doubleword Indexed X-form

stxvrbx: Store VSX Vector Rightmost Byte Indexed X-form
stxvrhx: Store VSX Vector Rightmost Halfword Indexed X-form
stxvrwx: Store VSX Vector Rightmost Word Indexed X-form
stxvrdx: Store VSX Vector Rightmost Doubleword Indexed X-form

Signed-off-by: Lucas Coutinho <lucas.coutinho@eldorado.org.br>
Signed-off-by: Matheus Ferst <matheus.ferst@eldorado.org.br>
---
 target/ppc/insn32.decode            |  8 +++++++
 target/ppc/translate/vsx-impl.c.inc | 35 +++++++++++++++++++++++++++++
 2 files changed, 43 insertions(+)

diff --git a/target/ppc/insn32.decode b/target/ppc/insn32.decode
index 5d3cfadfc6..00c825b856 100644
--- a/target/ppc/insn32.decode
+++ b/target/ppc/insn32.decode
@@ -612,6 +612,14 @@ LXVX            011111 ..... ..... ..... 0100 - 01100 . 
@X_TSX
 STXVX           011111 ..... ..... ..... 0110001100 .   @X_TSX
 LXVPX           011111 ..... ..... ..... 0101001101 -   @X_TSXP
 STXVPX          011111 ..... ..... ..... 0111001101 -   @X_TSXP
+LXVRBX          011111 ..... ..... ..... 0000001101 .   @X_TSX
+LXVRHX          011111 ..... ..... ..... 0000101101 .   @X_TSX
+LXVRWX          011111 ..... ..... ..... 0001001101 .   @X_TSX
+LXVRDX          011111 ..... ..... ..... 0001101101 .   @X_TSX
+STXVRBX         011111 ..... ..... ..... 0010001101 .   @X_TSX
+STXVRHX         011111 ..... ..... ..... 0010101101 .   @X_TSX
+STXVRWX         011111 ..... ..... ..... 0011001101 .   @X_TSX
+STXVRDX         011111 ..... ..... ..... 0011101101 .   @X_TSX
 
 ## VSX Scalar Multiply-Add Instructions
 
diff --git a/target/ppc/translate/vsx-impl.c.inc 
b/target/ppc/translate/vsx-impl.c.inc
index 48a398da0e..55a4a9bd27 100644
--- a/target/ppc/translate/vsx-impl.c.inc
+++ b/target/ppc/translate/vsx-impl.c.inc
@@ -2346,6 +2346,41 @@ TRANS64_FLAGS2(ISA310, PLXV, do_lstxv_PLS_D, false, 
false)
 TRANS64_FLAGS2(ISA310, PSTXVP, do_lstxv_PLS_D, true, true)
 TRANS64_FLAGS2(ISA310, PLXVP, do_lstxv_PLS_D, false, true)
 
+static bool do_lstrm(DisasContext *ctx, arg_X *a, MemOp mop, bool store)
+{
+    TCGv ea;
+    TCGv_i64 xt;
+
+    REQUIRE_VSX(ctx);
+
+    xt = tcg_temp_new_i64();
+
+    gen_set_access_type(ctx, ACCESS_INT);
+    ea = do_ea_calc(ctx, a->ra , cpu_gpr[a->rb]);
+
+    if (store) {
+        get_cpu_vsr(xt, a->rt, false);
+        tcg_gen_qemu_st_i64(xt, ea, ctx->mem_idx, mop);
+    } else {
+        tcg_gen_qemu_ld_i64(xt, ea, ctx->mem_idx, mop);
+        set_cpu_vsr(a->rt, xt, false);
+        set_cpu_vsr(a->rt, tcg_const_i64(0), true);
+    }
+
+    tcg_temp_free(ea);
+    tcg_temp_free_i64(xt);
+    return true;
+}
+
+TRANS_FLAGS2(ISA310, LXVRBX, do_lstrm, DEF_MEMOP(MO_UB), false)
+TRANS_FLAGS2(ISA310, LXVRHX, do_lstrm, DEF_MEMOP(MO_UW), false)
+TRANS_FLAGS2(ISA310, LXVRWX, do_lstrm, DEF_MEMOP(MO_UL), false)
+TRANS_FLAGS2(ISA310, LXVRDX, do_lstrm, DEF_MEMOP(MO_UQ), false)
+TRANS_FLAGS2(ISA310, STXVRBX, do_lstrm, DEF_MEMOP(MO_UB), true)
+TRANS_FLAGS2(ISA310, STXVRHX, do_lstrm, DEF_MEMOP(MO_UW), true)
+TRANS_FLAGS2(ISA310, STXVRWX, do_lstrm, DEF_MEMOP(MO_UL), true)
+TRANS_FLAGS2(ISA310, STXVRDX, do_lstrm, DEF_MEMOP(MO_UQ), true)
+
 static void gen_xxeval_i64(TCGv_i64 t, TCGv_i64 a, TCGv_i64 b, TCGv_i64 c,
                            int64_t imm)
 {
-- 
2.25.1