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From: Peter Maydell <peter.maydell@linaro.org>
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Subject: [Qemu-devel] [PULL 31/39] target/arm: Decode aa32 armv8.1 two reg
and a scalar
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From: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daud=C3=A9 <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20180228193125.20577-9-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
target/arm/translate.c | 46 ++++++++++++++++++++++++++++++++++++++++++----
1 file changed, 42 insertions(+), 4 deletions(-)
diff --git a/target/arm/translate.c b/target/arm/translate.c
index 05fa6a53f9..9169b6b367 100644
--- a/target/arm/translate.c
+++ b/target/arm/translate.c
@@ -76,6 +76,10 @@ static const char *regnames[] =3D
{ "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
"r8", "r9", "r10", "r11", "r12", "r13", "r14", "pc" };
=20
+/* Function prototypes for gen_ functions calling Neon helpers. */
+typedef void NeonGenThreeOpEnvFn(TCGv_i32, TCGv_env, TCGv_i32,
+ TCGv_i32, TCGv_i32);
+
/* initialize TCG globals. */
void arm_translate_init(void)
{
@@ -6985,11 +6989,45 @@ static int disas_neon_data_insn(DisasContext *s, ui=
nt32_t insn)
}
neon_store_reg64(cpu_V0, rd + pass);
}
-
-
break;
- default: /* 14 and 15 are RESERVED */
- return 1;
+ case 14: /* VQRDMLAH scalar */
+ case 15: /* VQRDMLSH scalar */
+ {
+ NeonGenThreeOpEnvFn *fn;
+
+ if (!arm_dc_feature(s, ARM_FEATURE_V8_RDM)) {
+ return 1;
+ }
+ if (u && ((rd | rn) & 1)) {
+ return 1;
+ }
+ if (op =3D=3D 14) {
+ if (size =3D=3D 1) {
+ fn =3D gen_helper_neon_qrdmlah_s16;
+ } else {
+ fn =3D gen_helper_neon_qrdmlah_s32;
+ }
+ } else {
+ if (size =3D=3D 1) {
+ fn =3D gen_helper_neon_qrdmlsh_s16;
+ } else {
+ fn =3D gen_helper_neon_qrdmlsh_s32;
+ }
+ }
+
+ tmp2 =3D neon_get_scalar(size, rm);
+ for (pass =3D 0; pass < (u ? 4 : 2); pass++) {
+ tmp =3D neon_load_reg(rn, pass);
+ tmp3 =3D neon_load_reg(rd, pass);
+ fn(tmp, cpu_env, tmp, tmp2, tmp3);
+ tcg_temp_free_i32(tmp3);
+ neon_store_reg(rd, pass, tmp);
+ }
+ tcg_temp_free_i32(tmp2);
+ }
+ break;
+ default:
+ g_assert_not_reached();
}
}
} else { /* size =3D=3D 3 */
--=20
2.16.2