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[Qemu-arm] [PATCH v3 15/16] target/arm: Decode t32 simd 3reg and 2reg_sc
From: |
Richard Henderson |
Subject: |
[Qemu-arm] [PATCH v3 15/16] target/arm: Decode t32 simd 3reg and 2reg_scalar extension |
Date: |
Wed, 28 Feb 2018 11:31:24 -0800 |
Happily, the bits are in the same places compared to a32.
Signed-off-by: Richard Henderson <address@hidden>
---
target/arm/translate.c | 14 +++++++++++++-
1 file changed, 13 insertions(+), 1 deletion(-)
diff --git a/target/arm/translate.c b/target/arm/translate.c
index 3ad8b4031c..ba6ab7d287 100644
--- a/target/arm/translate.c
+++ b/target/arm/translate.c
@@ -10774,7 +10774,19 @@ static void disas_thumb2_insn(DisasContext *s,
uint32_t insn)
default_exception_el(s));
break;
}
- if (((insn >> 24) & 3) == 3) {
+ if ((insn & 0xfe000a00) == 0xfc000800
+ && arm_dc_feature(s, ARM_FEATURE_V8)) {
+ /* The Thumb2 and ARM encodings are identical. */
+ if (disas_neon_insn_3same_ext(s, insn)) {
+ goto illegal_op;
+ }
+ } else if ((insn & 0xff000a00) == 0xfe000800
+ && arm_dc_feature(s, ARM_FEATURE_V8)) {
+ /* The Thumb2 and ARM encodings are identical. */
+ if (disas_neon_insn_2reg_scalar_ext(s, insn)) {
+ goto illegal_op;
+ }
+ } else if (((insn >> 24) & 3) == 3) {
/* Translate into the equivalent ARM encoding. */
insn = (insn & 0xe2ffffff) | ((insn & (1 << 28)) >> 4) | (1 << 28);
if (disas_neon_data_insn(s, insn)) {
--
2.14.3
- [Qemu-arm] [PATCH v3 05/16] target/arm: Decode aa64 armv8.1 three same extra, (continued)
- [Qemu-arm] [PATCH v3 05/16] target/arm: Decode aa64 armv8.1 three same extra, Richard Henderson, 2018/02/28
- [Qemu-arm] [PATCH v3 06/16] target/arm: Decode aa64 armv8.1 scalar/vector x indexed element, Richard Henderson, 2018/02/28
- [Qemu-arm] [PATCH v3 08/16] target/arm: Decode aa32 armv8.1 two reg and a scalar, Richard Henderson, 2018/02/28
- [Qemu-arm] [PATCH v3 09/16] target/arm: Enable ARM_FEATURE_V8_RDM, Richard Henderson, 2018/02/28
- [Qemu-arm] [PATCH v3 07/16] target/arm: Decode aa32 armv8.1 three same, Richard Henderson, 2018/02/28
- [Qemu-arm] [PATCH v3 10/16] target/arm: Add ARM_FEATURE_V8_FCMA, Richard Henderson, 2018/02/28
- [Qemu-arm] [PATCH v3 11/16] target/arm: Decode aa64 armv8.3 fcadd, Richard Henderson, 2018/02/28
- [Qemu-arm] [PATCH v3 12/16] target/arm: Decode aa64 armv8.3 fcmla, Richard Henderson, 2018/02/28
- [Qemu-arm] [PATCH v3 14/16] target/arm: Decode aa32 armv8.3 2-reg-index, Richard Henderson, 2018/02/28
- [Qemu-arm] [PATCH v3 13/16] target/arm: Decode aa32 armv8.3 3-same, Richard Henderson, 2018/02/28
- [Qemu-arm] [PATCH v3 15/16] target/arm: Decode t32 simd 3reg and 2reg_scalar extension,
Richard Henderson <=
- [Qemu-arm] [PATCH v3 16/16] target/arm: Enable ARM_FEATURE_V8_FCMA, Richard Henderson, 2018/02/28