target/arm: Convert Neon 2-reg-misc crypto operations to decodetree

Convert the Neon-2-reg misc crypto ops (AESE, AESMC, SHA1H, SHA1SU1)
to decodetree.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200616170844.13318-9-peter.maydell@linaro.org

3 files changed, 58 insertions, 48 deletions

diff --git a/target/arm/neon-dp.decode b/target/arm/neon-dp.decode
index b5692070d6..86b1b9e34b 100644
--- a/target/arm/neon-dp.decode
+++ b/target/arm/neon-dp.decode
@@ -441,12 +441,19 @@ Vimm_1r          1111 001 . 1 . 000 ... .... cmode:4 0 . op:1 1 .... @1reg_imm
                  &2misc vm=%vm_dp vd=%vd_dp
     @2misc_q0    .... ... .. . .. size:2 .. .... . .... . . . .... \
                  &2misc vm=%vm_dp vd=%vd_dp q=0
+    @2misc_q1    .... ... .. . .. size:2 .. .... . .... . . . .... \
+                 &2misc vm=%vm_dp vd=%vd_dp q=1
 
     VREV64       1111 001 11 . 11 .. 00 .... 0 0000 . . 0 .... @2misc
 
     VPADDL_S     1111 001 11 . 11 .. 00 .... 0 0100 . . 0 .... @2misc
     VPADDL_U     1111 001 11 . 11 .. 00 .... 0 0101 . . 0 .... @2misc
 
+    AESE         1111 001 11 . 11 .. 00 .... 0 0110 0 . 0 .... @2misc_q1
+    AESD         1111 001 11 . 11 .. 00 .... 0 0110 1 . 0 .... @2misc_q1
+    AESMC        1111 001 11 . 11 .. 00 .... 0 0111 0 . 0 .... @2misc_q1
+    AESIMC       1111 001 11 . 11 .. 00 .... 0 0111 1 . 0 .... @2misc_q1
+
     VMVN         1111 001 11 . 11 .. 00 .... 0 1011 . . 0 .... @2misc
 
     VPADAL_S     1111 001 11 . 11 .. 00 .... 0 1100 . . 0 .... @2misc
@@ -458,6 +465,8 @@ Vimm_1r          1111 001 . 1 . 000 ... .... cmode:4 0 . op:1 1 .... @1reg_imm
     VCLE0        1111 001 11 . 11 .. 01 .... 0 0011 . . 0 .... @2misc
     VCLT0        1111 001 11 . 11 .. 01 .... 0 0100 . . 0 .... @2misc
 
+    SHA1H        1111 001 11 . 11 .. 01 .... 0 0101 1 . 0 .... @2misc_q1
+
     VABS         1111 001 11 . 11 .. 01 .... 0 0110 . . 0 .... @2misc
     VNEG         1111 001 11 . 11 .. 01 .... 0 0111 . . 0 .... @2misc
 
@@ -473,6 +482,9 @@ Vimm_1r          1111 001 . 1 . 000 ... .... cmode:4 0 . op:1 1 .... @1reg_imm
 
     VSHLL        1111 001 11 . 11 .. 10 .... 0 0110 0 . 0 .... @2misc_q0
 
+    SHA1SU1      1111 001 11 . 11 .. 10 .... 0 0111 0 . 0 .... @2misc_q1
+    SHA256SU0    1111 001 11 . 11 .. 10 .... 0 0111 1 . 0 .... @2misc_q1
+
     VCVT_F16_F32 1111 001 11 . 11 .. 10 .... 0 1100 0 . 0 .... @2misc_q0
     VCVT_F32_F16 1111 001 11 . 11 .. 10 .... 0 1110 0 . 0 .... @2misc_q0
   ]
diff --git a/target/arm/translate-neon.inc.c b/target/arm/translate-neon.inc.c
index d80123514c..5e2cd18bf7 100644
--- a/target/arm/translate-neon.inc.c
+++ b/target/arm/translate-neon.inc.c
@@ -3505,3 +3505,45 @@ static bool trans_VMVN(DisasContext *s, arg_2misc *a)
     }
     return do_2misc_vec(s, a, tcg_gen_gvec_not);
 }
+
+#define WRAP_2M_3_OOL_FN(WRAPNAME, FUNC, DATA)                          \
+    static void WRAPNAME(unsigned vece, uint32_t rd_ofs,                \
+                         uint32_t rm_ofs, uint32_t oprsz,               \
+                         uint32_t maxsz)                                \
+    {                                                                   \
+        tcg_gen_gvec_3_ool(rd_ofs, rd_ofs, rm_ofs, oprsz, maxsz,        \
+                           DATA, FUNC);                                 \
+    }
+
+#define WRAP_2M_2_OOL_FN(WRAPNAME, FUNC, DATA)                          \
+    static void WRAPNAME(unsigned vece, uint32_t rd_ofs,                \
+                         uint32_t rm_ofs, uint32_t oprsz,               \
+                         uint32_t maxsz)                                \
+    {                                                                   \
+        tcg_gen_gvec_2_ool(rd_ofs, rm_ofs, oprsz, maxsz, DATA, FUNC);   \
+    }
+
+WRAP_2M_3_OOL_FN(gen_AESE, gen_helper_crypto_aese, 0)
+WRAP_2M_3_OOL_FN(gen_AESD, gen_helper_crypto_aese, 1)
+WRAP_2M_2_OOL_FN(gen_AESMC, gen_helper_crypto_aesmc, 0)
+WRAP_2M_2_OOL_FN(gen_AESIMC, gen_helper_crypto_aesmc, 1)
+WRAP_2M_2_OOL_FN(gen_SHA1H, gen_helper_crypto_sha1h, 0)
+WRAP_2M_2_OOL_FN(gen_SHA1SU1, gen_helper_crypto_sha1su1, 0)
+WRAP_2M_2_OOL_FN(gen_SHA256SU0, gen_helper_crypto_sha256su0, 0)
+
+#define DO_2M_CRYPTO(INSN, FEATURE, SIZE)                       \
+    static bool trans_##INSN(DisasContext *s, arg_2misc *a)     \
+    {                                                           \
+        if (!dc_isar_feature(FEATURE, s) || a->size != SIZE) {  \
+            return false;                                       \
+        }                                                       \
+        return do_2misc_vec(s, a, gen_##INSN);                  \
+    }
+
+DO_2M_CRYPTO(AESE, aa32_aes, 0)
+DO_2M_CRYPTO(AESD, aa32_aes, 0)
+DO_2M_CRYPTO(AESMC, aa32_aes, 0)
+DO_2M_CRYPTO(AESIMC, aa32_aes, 0)
+DO_2M_CRYPTO(SHA1H, aa32_sha1, 2)
+DO_2M_CRYPTO(SHA1SU1, aa32_sha1, 2)
+DO_2M_CRYPTO(SHA256SU0, aa32_sha2, 2)
diff --git a/target/arm/translate.c b/target/arm/translate.c
index 0f0741a37b..38644995ab 100644
--- a/target/arm/translate.c
+++ b/target/arm/translate.c
@@ -4855,7 +4855,7 @@ static int disas_neon_data_insn(DisasContext *s, uint32_t insn)
 {
     int op;
     int q;
-    int rd, rm, rd_ofs, rm_ofs;
+    int rd, rm;
     int size;
     int pass;
     int u;
@@ -4882,8 +4882,6 @@ static int disas_neon_data_insn(DisasContext *s, uint32_t insn)
     VFP_DREG_D(rd, insn);
     VFP_DREG_M(rm, insn);
     size = (insn >> 20) & 3;
-    rd_ofs = neon_reg_offset(rd, 0);
-    rm_ofs = neon_reg_offset(rm, 0);
 
     if ((insn & (1 << 23)) == 0) {
         /* Three register same length: handled by decodetree */
@@ -4935,6 +4933,9 @@ static int disas_neon_data_insn(DisasContext *s, uint32_t insn)
                 case NEON_2RM_VCLE0:
                 case NEON_2RM_VCGE0:
                 case NEON_2RM_VCLT0:
+                case NEON_2RM_AESE: case NEON_2RM_AESMC:
+                case NEON_2RM_SHA1H:
+                case NEON_2RM_SHA1SU1:
                     /* handled by decodetree */
                     return 1;
                 case NEON_2RM_VTRN:
@@ -4950,51 +4951,6 @@ static int disas_neon_data_insn(DisasContext *s, uint32_t insn)
                         goto elementwise;
                     }
                     break;
-                case NEON_2RM_AESE: case NEON_2RM_AESMC:
-                    if (!dc_isar_feature(aa32_aes, s) || ((rm | rd) & 1)) {
-                        return 1;
-                    }
-                    /*
-                     * Bit 6 is the lowest opcode bit; it distinguishes
-                     * between encryption (AESE/AESMC) and decryption
-                     * (AESD/AESIMC).
-                     */
-                    if (op == NEON_2RM_AESE) {
-                        tcg_gen_gvec_3_ool(vfp_reg_offset(true, rd),
-                                           vfp_reg_offset(true, rd),
-                                           vfp_reg_offset(true, rm),
-                                           16, 16, extract32(insn, 6, 1),
-                                           gen_helper_crypto_aese);
-                    } else {
-                        tcg_gen_gvec_2_ool(vfp_reg_offset(true, rd),
-                                           vfp_reg_offset(true, rm),
-                                           16, 16, extract32(insn, 6, 1),
-                                           gen_helper_crypto_aesmc);
-                    }
-                    break;
-                case NEON_2RM_SHA1H:
-                    if (!dc_isar_feature(aa32_sha1, s) || ((rm | rd) & 1)) {
-                        return 1;
-                    }
-                    tcg_gen_gvec_2_ool(rd_ofs, rm_ofs, 16, 16, 0,
-                                       gen_helper_crypto_sha1h);
-                    break;
-                case NEON_2RM_SHA1SU1:
-                    if ((rm | rd) & 1) {
-                            return 1;
-                    }
-                    /* bit 6 (q): set -> SHA256SU0, cleared -> SHA1SU1 */
-                    if (q) {
-                        if (!dc_isar_feature(aa32_sha2, s)) {
-                            return 1;
-                        }
-                    } else if (!dc_isar_feature(aa32_sha1, s)) {
-                        return 1;
-                    }
-                    tcg_gen_gvec_2_ool(rd_ofs, rm_ofs, 16, 16, 0,
-                                       q ? gen_helper_crypto_sha256su0
-                                       : gen_helper_crypto_sha1su1);
-                    break;
 
                 default:
                 elementwise: