target/arm: Convert Neon 3-reg-same SHA to decodetree

Convert the Neon SHA instructions in the 3-reg-same group
to decodetree.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200512163904.10918-3-peter.maydell@linaro.org

1 files changed, 139 insertions, 0 deletions

diff --git a/target/arm/translate-neon.inc.c b/target/arm/translate-neon.inc.c
index 661b5fc4cf..03b3337e46 100644
--- a/target/arm/translate-neon.inc.c
+++ b/target/arm/translate-neon.inc.c
@@ -686,3 +686,142 @@ static bool trans_VMUL_p_3s(DisasContext *s, arg_3same *a)
 
 DO_VQRDMLAH(VQRDMLAH, gen_gvec_sqrdmlah_qc)
 DO_VQRDMLAH(VQRDMLSH, gen_gvec_sqrdmlsh_qc)
+
+static bool trans_SHA1_3s(DisasContext *s, arg_SHA1_3s *a)
+{
+    TCGv_ptr ptr1, ptr2, ptr3;
+    TCGv_i32 tmp;
+
+    if (!arm_dc_feature(s, ARM_FEATURE_NEON) ||
+        !dc_isar_feature(aa32_sha1, s)) {
+        return false;
+    }
+
+    /* UNDEF accesses to D16-D31 if they don't exist. */
+    if (!dc_isar_feature(aa32_simd_r32, s) &&
+        ((a->vd | a->vn | a->vm) & 0x10)) {
+        return false;
+    }
+
+    if ((a->vn | a->vm | a->vd) & 1) {
+        return false;
+    }
+
+    if (!vfp_access_check(s)) {
+        return true;
+    }
+
+    ptr1 = vfp_reg_ptr(true, a->vd);
+    ptr2 = vfp_reg_ptr(true, a->vn);
+    ptr3 = vfp_reg_ptr(true, a->vm);
+    tmp = tcg_const_i32(a->optype);
+    gen_helper_crypto_sha1_3reg(ptr1, ptr2, ptr3, tmp);
+    tcg_temp_free_i32(tmp);
+    tcg_temp_free_ptr(ptr1);
+    tcg_temp_free_ptr(ptr2);
+    tcg_temp_free_ptr(ptr3);
+
+    return true;
+}
+
+static bool trans_SHA256H_3s(DisasContext *s, arg_SHA256H_3s *a)
+{
+    TCGv_ptr ptr1, ptr2, ptr3;
+
+    if (!arm_dc_feature(s, ARM_FEATURE_NEON) ||
+        !dc_isar_feature(aa32_sha2, s)) {
+        return false;
+    }
+
+    /* UNDEF accesses to D16-D31 if they don't exist. */
+    if (!dc_isar_feature(aa32_simd_r32, s) &&
+        ((a->vd | a->vn | a->vm) & 0x10)) {
+        return false;
+    }
+
+    if ((a->vn | a->vm | a->vd) & 1) {
+        return false;
+    }
+
+    if (!vfp_access_check(s)) {
+        return true;
+    }
+
+    ptr1 = vfp_reg_ptr(true, a->vd);
+    ptr2 = vfp_reg_ptr(true, a->vn);
+    ptr3 = vfp_reg_ptr(true, a->vm);
+    gen_helper_crypto_sha256h(ptr1, ptr2, ptr3);
+    tcg_temp_free_ptr(ptr1);
+    tcg_temp_free_ptr(ptr2);
+    tcg_temp_free_ptr(ptr3);
+
+    return true;
+}
+
+static bool trans_SHA256H2_3s(DisasContext *s, arg_SHA256H2_3s *a)
+{
+    TCGv_ptr ptr1, ptr2, ptr3;
+
+    if (!arm_dc_feature(s, ARM_FEATURE_NEON) ||
+        !dc_isar_feature(aa32_sha2, s)) {
+        return false;
+    }
+
+    /* UNDEF accesses to D16-D31 if they don't exist. */
+    if (!dc_isar_feature(aa32_simd_r32, s) &&
+        ((a->vd | a->vn | a->vm) & 0x10)) {
+        return false;
+    }
+
+    if ((a->vn | a->vm | a->vd) & 1) {
+        return false;
+    }
+
+    if (!vfp_access_check(s)) {
+        return true;
+    }
+
+    ptr1 = vfp_reg_ptr(true, a->vd);
+    ptr2 = vfp_reg_ptr(true, a->vn);
+    ptr3 = vfp_reg_ptr(true, a->vm);
+    gen_helper_crypto_sha256h2(ptr1, ptr2, ptr3);
+    tcg_temp_free_ptr(ptr1);
+    tcg_temp_free_ptr(ptr2);
+    tcg_temp_free_ptr(ptr3);
+
+    return true;
+}
+
+static bool trans_SHA256SU1_3s(DisasContext *s, arg_SHA256SU1_3s *a)
+{
+    TCGv_ptr ptr1, ptr2, ptr3;
+
+    if (!arm_dc_feature(s, ARM_FEATURE_NEON) ||
+        !dc_isar_feature(aa32_sha2, s)) {
+        return false;
+    }
+
+    /* UNDEF accesses to D16-D31 if they don't exist. */
+    if (!dc_isar_feature(aa32_simd_r32, s) &&
+        ((a->vd | a->vn | a->vm) & 0x10)) {
+        return false;
+    }
+
+    if ((a->vn | a->vm | a->vd) & 1) {
+        return false;
+    }
+
+    if (!vfp_access_check(s)) {
+        return true;
+    }
+
+    ptr1 = vfp_reg_ptr(true, a->vd);
+    ptr2 = vfp_reg_ptr(true, a->vn);
+    ptr3 = vfp_reg_ptr(true, a->vm);
+    gen_helper_crypto_sha256su1(ptr1, ptr2, ptr3);
+    tcg_temp_free_ptr(ptr1);
+    tcg_temp_free_ptr(ptr2);
+    tcg_temp_free_ptr(ptr3);
+
+    return true;
+}