@@ -1373,6 +1373,7 @@ enum arm_features {
ARM_FEATURE_JAZELLE, /* has (trivial) Jazelle implementation */
ARM_FEATURE_SVE, /* has Scalable Vector Extension */
ARM_FEATURE_V8_SHA512, /* implements SHA512 part of v8 Crypto Extensions */
+ ARM_FEATURE_V8_SHA3, /* implements SHA3 part of v8 Crypto Extensions */
};
static inline int arm_feature(CPUARMState *env, int feature)
@@ -11162,9 +11162,10 @@ static void disas_crypto_three_reg_sha512(DisasContext *s, uint32_t insn)
feature = ARM_FEATURE_V8_SHA512;
genfn = gen_helper_crypto_sha512su1;
break;
- default:
- unallocated_encoding(s);
- return;
+ case 3: /* RAX1 */
+ feature = ARM_FEATURE_V8_SHA3;
+ genfn = NULL;
+ break;
}
} else {
unallocated_encoding(s);
@@ -11193,7 +11194,28 @@ static void disas_crypto_three_reg_sha512(DisasContext *s, uint32_t insn)
tcg_temp_free_ptr(tcg_rn_ptr);
tcg_temp_free_ptr(tcg_rm_ptr);
} else {
- g_assert_not_reached();
+ TCGv_i64 tcg_op1, tcg_op2, tcg_res[2];
+ int pass;
+
+ tcg_op1 = tcg_temp_new_i64();
+ tcg_op2 = tcg_temp_new_i64();
+ tcg_res[0] = tcg_temp_new_i64();
+ tcg_res[1] = tcg_temp_new_i64();
+
+ for (pass = 0; pass < 2; pass++) {
+ read_vec_element(s, tcg_op1, rn, pass, MO_64);
+ read_vec_element(s, tcg_op2, rm, pass, MO_64);
+
+ tcg_gen_rotli_i64(tcg_res[pass], tcg_op2, 1);
+ tcg_gen_xor_i64(tcg_res[pass], tcg_res[pass], tcg_op1);
+ }
+ write_vec_element(s, tcg_res[0], rd, 0, MO_64);
+ write_vec_element(s, tcg_res[1], rd, 1, MO_64);
+
+ tcg_temp_free_i64(tcg_op1);
+ tcg_temp_free_i64(tcg_op2);
+ tcg_temp_free_i64(tcg_res[0]);
+ tcg_temp_free_i64(tcg_res[1]);
}
}
@@ -11240,6 +11262,122 @@ static void disas_crypto_two_reg_sha512(DisasContext *s, uint32_t insn)
tcg_temp_free_ptr(tcg_rn_ptr);
}
+/* Crypto four-register
+ * 31 23 22 21 20 16 15 14 10 9 5 4 0
+ * +-------------------+-----+------+---+------+------+------+
+ * | 1 1 0 0 1 1 1 0 0 | Op0 | Rm | 0 | Ra | Rn | Rd |
+ * +-------------------+-----+------+---+------+------+------+
+ */
+static void disas_crypto_four_reg(DisasContext *s, uint32_t insn)
+{
+ int op0 = extract32(insn, 21, 2);
+ int rm = extract32(insn, 16, 5);
+ int ra = extract32(insn, 10, 5);
+ int rn = extract32(insn, 5, 5);
+ int rd = extract32(insn, 0, 5);
+ int feature;
+
+ switch (op0) {
+ case 0: /* EOR3 */
+ case 1: /* BCAX */
+ feature = ARM_FEATURE_V8_SHA3;
+ break;
+ default:
+ unallocated_encoding(s);
+ return;
+ }
+
+ if (!arm_dc_feature(s, feature)) {
+ unallocated_encoding(s);
+ return;
+ }
+
+ if (!fp_access_check(s)) {
+ return;
+ }
+
+ if (op0 < 2) {
+ TCGv_i64 tcg_op1, tcg_op2, tcg_op3, tcg_res[2];
+ int pass;
+
+ tcg_op1 = tcg_temp_new_i64();
+ tcg_op2 = tcg_temp_new_i64();
+ tcg_op3 = tcg_temp_new_i64();
+ tcg_res[0] = tcg_temp_new_i64();
+ tcg_res[1] = tcg_temp_new_i64();
+
+ for (pass = 0; pass < 2; pass++) {
+ read_vec_element(s, tcg_op1, rn, pass, MO_64);
+ read_vec_element(s, tcg_op2, rm, pass, MO_64);
+ read_vec_element(s, tcg_op3, ra, pass, MO_64);
+
+ if (op0 == 0) {
+ /* EOR3 */
+ tcg_gen_xor_i64(tcg_res[pass], tcg_op2, tcg_op3);
+ } else {
+ /* BCAX */
+ tcg_gen_andc_i64(tcg_res[pass], tcg_op2, tcg_op3);
+ }
+ tcg_gen_xor_i64(tcg_res[pass], tcg_res[pass], tcg_op1);
+ }
+ write_vec_element(s, tcg_res[0], rd, 0, MO_64);
+ write_vec_element(s, tcg_res[1], rd, 1, MO_64);
+
+ tcg_temp_free_i64(tcg_op1);
+ tcg_temp_free_i64(tcg_op2);
+ tcg_temp_free_i64(tcg_op3);
+ tcg_temp_free_i64(tcg_res[0]);
+ tcg_temp_free_i64(tcg_res[1]);
+ } else {
+ g_assert_not_reached();
+ }
+}
+
+/* Crypto XAR
+ * 31 21 20 16 15 10 9 5 4 0
+ * +-----------------------+------+--------+------+------+
+ * | 1 1 0 0 1 1 1 0 1 0 0 | Rm | imm6 | Rn | Rd |
+ * +-----------------------+------+--------+------+------+
+ */
+static void disas_crypto_xar(DisasContext *s, uint32_t insn)
+{
+ int rm = extract32(insn, 16, 5);
+ int imm6 = extract32(insn, 10, 6);
+ int rn = extract32(insn, 5, 5);
+ int rd = extract32(insn, 0, 5);
+ TCGv_i64 tcg_op1, tcg_op2, tcg_res[2];
+ int pass;
+
+ if (!arm_dc_feature(s, ARM_FEATURE_V8_SHA3)) {
+ unallocated_encoding(s);
+ return;
+ }
+
+ if (!fp_access_check(s)) {
+ return;
+ }
+
+ tcg_op1 = tcg_temp_new_i64();
+ tcg_op2 = tcg_temp_new_i64();
+ tcg_res[0] = tcg_temp_new_i64();
+ tcg_res[1] = tcg_temp_new_i64();
+
+ for (pass = 0; pass < 2; pass++) {
+ read_vec_element(s, tcg_op1, rn, pass, MO_64);
+ read_vec_element(s, tcg_op2, rm, pass, MO_64);
+
+ tcg_gen_xor_i64(tcg_res[pass], tcg_op1, tcg_op2);
+ tcg_gen_rotri_i64(tcg_res[pass], tcg_res[pass], imm6);
+ }
+ write_vec_element(s, tcg_res[0], rd, 0, MO_64);
+ write_vec_element(s, tcg_res[1], rd, 1, MO_64);
+
+ tcg_temp_free_i64(tcg_op1);
+ tcg_temp_free_i64(tcg_op2);
+ tcg_temp_free_i64(tcg_res[0]);
+ tcg_temp_free_i64(tcg_res[1]);
+}
+
/* C3.6 Data processing - SIMD, inc Crypto
*
* As the decode gets a little complex we are using a table based
@@ -11271,6 +11409,8 @@ static const AArch64DecodeTable data_proc_simd[] = {
{ 0x5e280800, 0xff3e0c00, disas_crypto_two_reg_sha },
{ 0xce608000, 0xffe0b000, disas_crypto_three_reg_sha512 },
{ 0xcec08000, 0xfffff000, disas_crypto_two_reg_sha512 },
+ { 0xce000000, 0xff808000, disas_crypto_four_reg },
+ { 0xce800000, 0xffe00000, disas_crypto_xar },
{ 0x00000000, 0x00000000, NULL }
};
This implements emulation of the new SHA-3 instructions that have been added as an optional extensions to the ARMv8 Crypto Extensions in ARM v8.2. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> --- target/arm/cpu.h | 1 + target/arm/translate-a64.c | 148 +++++++++++++++++++- 2 files changed, 145 insertions(+), 4 deletions(-)