[RFC PATCH 3/7] target/ppc: Implemented pmxvi*ger* instructions

[Lucas Mateus Castro(alqotel)]

From: "Lucas Mateus Castro (alqotel)" <lucas.araujo@eldorado.org.br>

Implement the following PowerISA v3.1 instructions:
pmxvi4ger8:     Prefixed Masked VSX Vector 8-bit Signed/Unsigned Integer
GER (rank-4 update)
pmxvi4ger8pp:   Prefixed Masked VSX Vector 8-bit Signed/Unsigned Integer
GER (rank-4 update) Positive multiply, Positive accumulate
pmxvi8ger4:     Prefixed Masked VSX Vector 4-bit Signed Integer GER
(rank-8 update)
pmxvi8ger4pp:   Prefixed Masked VSX Vector 4-bit Signed Integer GER
(rank-8 update) Positive multiply, Positive accumulate
pmxvi8ger4spp:  Prefixed Masked VSX Vector 8-bit Signed/Unsigned Integer
GER (rank-4 update) with Saturate Positive multiply, Positive accumulate
pmxvi16ger2:    Prefixed Masked VSX Vector 16-bit Signed Integer GER
(rank-2 update)
pmxvi16ger2pp:  Prefixed Masked VSX Vector 16-bit Signed Integer GER
(rank-2 update) Positive multiply, Positive accumulate
pmxvi16ger2s:   Prefixed Masked VSX Vector 16-bit Signed Integer GER
(rank-2 update) with Saturation
pmxvi16ger2spp: Prefixed Masked VSX Vector 16-bit Signed Integer GER
(rank-2 update) with Saturation Positive multiply, Positive accumulate

Signed-off-by: Lucas Mateus Castro (alqotel) <lucas.araujo@eldorado.org.br>
---
 target/ppc/insn64.decode            | 30 +++++++++++++++++++++++++++++
 target/ppc/translate/vsx-impl.c.inc | 28 +++++++++++++++++++++++++--
 2 files changed, 56 insertions(+), 2 deletions(-)

diff --git a/target/ppc/insn64.decode b/target/ppc/insn64.decode
index 691e8fe6c0..18915f1977 100644
--- a/target/ppc/insn64.decode
+++ b/target/ppc/insn64.decode
@@ -68,6 +68,15 @@
                 ...... ..... ..... ..... ..... .. ....   \
                 &8RR_XX4_uim3 xt=%8rr_xx_xt xa=%8rr_xx_xa xb=%8rr_xx_xb 
xc=%8rr_xx_xc
 
+# Format MMIRR:XX3
+&MMIRR_XX3      xa xb xt pmsk xmsk ymsk
+%xx3_xa         2:1 16:5
+%xx3_xb         1:1 11:5
+%xx3_at         23:3 !function=times_4
+@MMIRR_XX3      ...... .. .... .. . . ........ xmsk:4 ymsk:4  \
+                ...... ... .. ..... ..... ........ ...  \
+                &MMIRR_XX3 xa=%xx3_xa xb=%xx3_xb xt=%xx3_at
+
 ### Fixed-Point Load Instructions
 
 PLBZ            000001 10 0--.-- .................. \
@@ -115,6 +124,27 @@ PSTFS           000001 10 0--.-- .................. \
 PSTFD           000001 10 0--.-- .................. \
                 110110 ..... ..... ................     @PLS_D
 
+## Vector GER instruction
+
+PMXVI4GER8      000001 11 1001 -- - - pmsk:8 ........              \
+                111011 ... -- ..... ..... 00100011 ..-  @MMIRR_XX3
+PMXVI4GER8PP    000001 11 1001 -- - - pmsk:8 ........              \
+                111011 ... -- ..... ..... 00100010 ..-  @MMIRR_XX3
+PMXVI8GER4      000001 11 1001 -- - - pmsk:4 ---- ........         \
+                111011 ... -- ..... ..... 00000011 ..-  @MMIRR_XX3
+PMXVI8GER4PP    000001 11 1001 -- - - pmsk:4 ---- ........         \
+                111011 ... -- ..... ..... 00000010 ..-  @MMIRR_XX3
+PMXVI16GER2     000001 11 1001 -- - - pmsk:2 ------ ........       \
+                111011 ... -- ..... ..... 01001011 ..-  @MMIRR_XX3
+PMXVI16GER2PP   000001 11 1001 -- - - pmsk:2 ------ ........       \
+                111011 ... -- ..... ..... 01101011 ..-  @MMIRR_XX3
+PMXVI8GER4SPP   000001 11 1001 -- - - pmsk:4 ---- ........         \
+                111011 ... -- ..... ..... 01100011 ..-  @MMIRR_XX3
+PMXVI16GER2S    000001 11 1001 -- - - pmsk:2 ------ ........       \
+                111011 ... -- ..... ..... 00101011 ..-  @MMIRR_XX3
+PMXVI16GER2SPP  000001 11 1001 -- - - pmsk:2 ------ ........       \
+                111011 ... -- ..... ..... 00101010 ..-  @MMIRR_XX3
+
 ### Prefixed No-operation Instruction
 
 @PNOP           000001 11 0000-- 000000000000000000     \
diff --git a/target/ppc/translate/vsx-impl.c.inc 
b/target/ppc/translate/vsx-impl.c.inc
index 1eb68c7081..eb7b8cb0c6 100644
--- a/target/ppc/translate/vsx-impl.c.inc
+++ b/target/ppc/translate/vsx-impl.c.inc
@@ -2835,7 +2835,7 @@ static uint32_t pack_flags_xvi(int acc, int sat)
     return (sat << 1) | acc;
 }
 
-static bool do_ger_XX3(DisasContext *ctx, arg_XX3 *a, uint32_t op,
+static bool do_ger_MMIRR_XX3(DisasContext *ctx, arg_MMIRR_XX3 *a, uint32_t op,
                              void (*helper)(TCGv_env, TCGv_i32, TCGv_i32,
                                             TCGv_i32, TCGv_i32, TCGv_i32))
 {
@@ -2847,11 +2847,25 @@ static bool do_ger_XX3(DisasContext *ctx, arg_XX3 *a, 
uint32_t op,
         return true;
     }
 
-    mask = 0xFFFFFFFF;
+    mask = ger_pack_masks(a->pmsk, a->ymsk, a->xmsk);
     helper(cpu_env, tcg_constant_i32(a->xa), tcg_constant_i32(a->xb),
            tcg_constant_i32(a->xt), tcg_constant_i32(mask),
            tcg_constant_i32(op));
     return true;
+
+}
+static bool do_ger_XX3(DisasContext *ctx, arg_XX3 *a, uint32_t op_flags,
+                       void (*helper)(TCGv_env, TCGv_i32, TCGv_i32,
+                                      TCGv_i32, TCGv_i32, TCGv_i32))
+{
+    arg_MMIRR_XX3 m;
+    m.xa = a->xa;
+    m.xb = a->xb;
+    m.xt = a->xt;
+    m.pmsk = 0xFF;
+    m.ymsk = 0xF;
+    m.xmsk = 0xF;
+    return do_ger_MMIRR_XX3(ctx, &m, op_flags, helper);
 }
 
 /* Used to keep line length < 80 */
@@ -2868,6 +2882,16 @@ TRANS(XVI16GER2, do_ger_XX3, GER_NOP, 
gen_helper_XVI16GER2)
 TRANS(XVI16GER2PP, do_ger_XX3, GER_PP, gen_helper_XVI16GER2)
 TRANS(XVI16GER2S, do_ger_XX3, GER_SAT, gen_helper_XVI16GER2)
 TRANS(XVI16GER2SPP, do_ger_XX3, GER_SPP, gen_helper_XVI16GER2)
+
+TRANS64(PMXVI4GER8, do_ger_MMIRR_XX3, GER_NOP, gen_helper_XVI4GER8)
+TRANS64(PMXVI4GER8PP, do_ger_MMIRR_XX3, GER_PP, gen_helper_XVI4GER8)
+TRANS64(PMXVI8GER4, do_ger_MMIRR_XX3, GER_NOP, gen_helper_XVI8GER4)
+TRANS64(PMXVI8GER4PP, do_ger_MMIRR_XX3, GER_PP, gen_helper_XVI8GER4)
+TRANS64(PMXVI8GER4SPP, do_ger_MMIRR_XX3, GER_SPP, gen_helper_XVI8GER4)
+TRANS64(PMXVI16GER2, do_ger_MMIRR_XX3, GER_NOP, gen_helper_XVI16GER2)
+TRANS64(PMXVI16GER2PP, do_ger_MMIRR_XX3, GER_PP, gen_helper_XVI16GER2)
+TRANS64(PMXVI16GER2S, do_ger_MMIRR_XX3, GER_SAT, gen_helper_XVI16GER2)
+TRANS64(PMXVI16GER2SPP, do_ger_MMIRR_XX3, GER_SPP, gen_helper_XVI16GER2)
 #undef GER_NOP
 #undef GER_PP
 #undef GER_SAT
-- 
2.31.1