[PATCH 09/10] target/ppc: Implemented vector module word/doubleword

[Lucas Mateus Castro(alqotel)]

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

Implement the following PowerISA v3.1 instructions:
vmodsw: Vector Modulo Signed Word
vmoduw: Vector Modulo Unsigned Word
vmodsd: Vector Modulo Signed Doubleword
vmodud: Vector Modulo Unsigned Doubleword
Hardware behavior based on mambo.

Signed-off-by: Lucas Mateus Castro (alqotel) <lucas.araujo@eldorado.org.br>
---
 target/ppc/insn32.decode            |  5 +++++
 target/ppc/translate/vmx-impl.c.inc | 26 ++++++++++++++++++++++++++
 2 files changed, 31 insertions(+)

diff --git a/target/ppc/insn32.decode b/target/ppc/insn32.decode
index 3eb920ac76..36b42e41d2 100644
--- a/target/ppc/insn32.decode
+++ b/target/ppc/insn32.decode
@@ -719,3 +719,8 @@ VDIVESD         000100 ..... ..... ..... 01111001011    @VX
 VDIVEUD         000100 ..... ..... ..... 01011001011    @VX
 VDIVESQ         000100 ..... ..... ..... 01100001011    @VX
 VDIVEUQ         000100 ..... ..... ..... 01000001011    @VX
+
+VMODSW          000100 ..... ..... ..... 11110001011    @VX
+VMODUW          000100 ..... ..... ..... 11010001011    @VX
+VMODSD          000100 ..... ..... ..... 11111001011    @VX
+VMODUD          000100 ..... ..... ..... 11011001011    @VX
diff --git a/target/ppc/translate/vmx-impl.c.inc 
b/target/ppc/translate/vmx-impl.c.inc
index 62b2fcd45c..ed01d91b87 100644
--- a/target/ppc/translate/vmx-impl.c.inc
+++ b/target/ppc/translate/vmx-impl.c.inc
@@ -3349,6 +3349,27 @@ static void do_vx_diveu_i32(TCGv_i32 t, TCGv_i32 a, 
TCGv_i32 b)
     tcg_temp_free_i64(val2);
 }
 
+#define REM_VEC(NAME, SZ, REM)                                          \
+static void do_vx_##NAME(TCGv_##SZ t, TCGv_##SZ a, TCGv_##SZ b)         \
+{                                                                       \
+    TCGv_##SZ zero = tcg_constant_##SZ(0), one = tcg_constant_##SZ(1);  \
+    /*                                                                  \
+     *  If N%0 the instruction used by the backend might deliver        \
+     *  a signal to the process and the hardware returns 0 when         \
+     *  N%0, so if b = 0 return 0%1                                     \
+     */                                                                 \
+    tcg_gen_movcond_##SZ(TCG_COND_EQ, a, b, zero, zero, a);             \
+    tcg_gen_movcond_##SZ(TCG_COND_EQ, b, b, zero, one, b);              \
+    REM(t, a, b);                                                       \
+}
+
+REM_VEC(rem_i32 , i32, tcg_gen_rem_i32)
+REM_VEC(remu_i32, i32, tcg_gen_remu_i32)
+REM_VEC(rem_i64 , i64, tcg_gen_rem_i64)
+REM_VEC(remu_i64, i64, tcg_gen_remu_i64)
+
+#undef REM_VEC
+
 TRANS_VDIV_VMOD(ISA310, VDIVESW, MO_32, do_vx_dives_i32, NULL)
 TRANS_VDIV_VMOD(ISA310, VDIVEUW, MO_32, do_vx_diveu_i32, NULL)
 TRANS_FLAGS2(ISA310, VDIVESD, do_vx_helper, gen_helper_VDIVESD)
@@ -3356,6 +3377,11 @@ TRANS_FLAGS2(ISA310, VDIVEUD, do_vx_helper, 
gen_helper_VDIVEUD)
 TRANS_FLAGS2(ISA310, VDIVESQ, do_vx_helper, gen_helper_VDIVESQ)
 TRANS_FLAGS2(ISA310, VDIVEUQ, do_vx_helper, gen_helper_VDIVEUQ)
 
+TRANS_VDIV_VMOD(ISA310, VMODSW, MO_32, do_vx_rem_i32 , NULL)
+TRANS_VDIV_VMOD(ISA310, VMODUW, MO_32, do_vx_remu_i32, NULL)
+TRANS_VDIV_VMOD(ISA310, VMODSD, MO_64, NULL, do_vx_rem_i64)
+TRANS_VDIV_VMOD(ISA310, VMODUD, MO_64, NULL, do_vx_remu_i64)
+
 #undef GEN_VR_LDX
 #undef GEN_VR_STX
 #undef GEN_VR_LVE
-- 
2.31.1