maddhd: Multiply-Add High Doubleword
maddhdu: Multiply-Add High Doubleword Unsigned
Above two instruction are dual form and differ by 1 bit
(31st bit)
Multiplies two 64-bit registers (RA * RB), adds third register(RC) to
the result(quadword) and returns the higher dword in the target
register(RT).
Signed-off-by: Nikunj A Dadhania <nik...@linux.vnet.ibm.com>
---
target-ppc/translate.c | 32 ++++++++++++++++++++++++++++++++
1 file changed, 32 insertions(+)
diff --git a/target-ppc/translate.c b/target-ppc/translate.c
index 9717048..6c5a4a6 100644
--- a/target-ppc/translate.c
+++ b/target-ppc/translate.c
@@ -7785,6 +7785,36 @@ static void gen_maddld(DisasContext *ctx)
tcg_temp_free_i64(zero);
tcg_temp_free_i64(neg);
}
+
+/* maddhd maddhdu */
+static void gen_maddhd_maddhdu(DisasContext *ctx)
+{
+ TCGv_i64 lo = tcg_temp_new_i64();
+ TCGv_i64 hi = tcg_temp_new_i64();
+ TCGv_i64 t1 = tcg_temp_new_i64();
+ TCGv_i64 t2 = tcg_temp_new_i64();
+ TCGv_i64 zero = tcg_const_i64(0);
+ TCGv_i64 neg = tcg_const_i64(-1);
+
+ if (Rc(ctx->opcode)) {
+ tcg_gen_mulu2_i64(lo, hi, cpu_gpr[rA(ctx->opcode)],
+ cpu_gpr[rB(ctx->opcode)]);
+ tcg_gen_mov_i64(t2, zero);
+ } else {
+ tcg_gen_muls2_i64(lo, hi, cpu_gpr[rA(ctx->opcode)],
+ cpu_gpr[rB(ctx->opcode)]);
+ tcg_gen_movi_i64(t2, -1);
+ tcg_gen_movcond_i64(TCG_COND_GE, t2, cpu_gpr[rC(ctx->opcode)], zero,
zero, neg);
+ }
+ tcg_gen_mov_i64(t1, zero);
+ tcg_gen_add2_i64(t1, cpu_gpr[rD(ctx->opcode)], lo, hi,
cpu_gpr[rC(ctx->opcode)], t2);
+ tcg_temp_free_i64(lo);
+ tcg_temp_free_i64(hi);
+ tcg_temp_free_i64(t1);
+ tcg_temp_free_i64(t2);
+ tcg_temp_free_i64(zero);
+ tcg_temp_free_i64(neg);
+}
#endif /* defined(TARGET_PPC64) */
GEN_VXFORM_NOA(vclzb, 1, 28)
@@ -10401,6 +10431,8 @@ GEN_HANDLER(mfvscr, 0x04, 0x2, 0x18, 0x001ff800,
PPC_ALTIVEC),
GEN_HANDLER(mtvscr, 0x04, 0x2, 0x19, 0x03ff0000, PPC_ALTIVEC),
GEN_HANDLER(vmladduhm, 0x04, 0x11, 0xFF, 0x00000000, PPC_ALTIVEC),
#if defined(TARGET_PPC64)
+GEN_HANDLER_E(maddhd_maddhdu, 0x04, 0x18, 0xFF, 0x00000000, PPC_NONE,
+ PPC2_ISA300),
GEN_HANDLER_E(maddld, 0x04, 0x19, 0xFF, 0x00000000, PPC_NONE, PPC2_ISA300),
#endif
GEN_HANDLER2(evsel0, "evsel", 0x04, 0x1c, 0x09, 0x00000000, PPC_SPE),
--
2.7.4
