From 9e33e1753bc3a7c7cab9a293b242036344c43a02 Mon Sep 17 00:00:00 2001 From: Weiwei Li Date: Sat, 23 Apr 2022 10:35:03 +0800 Subject: [PATCH] target/riscv: rvk: add support for zkne/zknd extension in RV64 - add aes64dsm, aes64ds, aes64im, aes64es, aes64esm, aes64ks2, aes64ks1i instructions Co-authored-by: Ruibo Lu Co-authored-by: Zewen Ye Signed-off-by: Weiwei Li Signed-off-by: Junqiang Wang Reviewed-by: Richard Henderson Acked-by: Alistair Francis Message-Id: <20220423023510.30794-8-liweiwei@iscas.ac.cn> Signed-off-by: Alistair Francis --- target/riscv/crypto_helper.c | 169 ++++++++++++++++++++++++++++++++ target/riscv/helper.h | 8 ++ target/riscv/insn32.decode | 12 +++ target/riscv/insn_trans/trans_rvk.c.inc | 54 ++++++++++ 4 files changed, 243 insertions(+) diff --git a/target/riscv/crypto_helper.c b/target/riscv/crypto_helper.c index 220d51c742..cb4783a1e9 100644 --- a/target/riscv/crypto_helper.c +++ b/target/riscv/crypto_helper.c @@ -102,4 +102,173 @@ target_ulong HELPER(aes32dsi)(target_ulong rs1, target_ulong rs2, { return aes32_operation(shamt, rs1, rs2, false, false); } + +#define BY(X, I) ((X >> (8 * I)) & 0xFF) + +#define AES_SHIFROWS_LO(RS1, RS2) ( \ + (((RS1 >> 24) & 0xFF) << 56) | (((RS2 >> 48) & 0xFF) << 48) | \ + (((RS2 >> 8) & 0xFF) << 40) | (((RS1 >> 32) & 0xFF) << 32) | \ + (((RS2 >> 56) & 0xFF) << 24) | (((RS2 >> 16) & 0xFF) << 16) | \ + (((RS1 >> 40) & 0xFF) << 8) | (((RS1 >> 0) & 0xFF) << 0)) + +#define AES_INVSHIFROWS_LO(RS1, RS2) ( \ + (((RS2 >> 24) & 0xFF) << 56) | (((RS2 >> 48) & 0xFF) << 48) | \ + (((RS1 >> 8) & 0xFF) << 40) | (((RS1 >> 32) & 0xFF) << 32) | \ + (((RS1 >> 56) & 0xFF) << 24) | (((RS2 >> 16) & 0xFF) << 16) | \ + (((RS2 >> 40) & 0xFF) << 8) | (((RS1 >> 0) & 0xFF) << 0)) + +#define AES_MIXBYTE(COL, B0, B1, B2, B3) ( \ + BY(COL, B3) ^ BY(COL, B2) ^ AES_GFMUL(BY(COL, B1), 3) ^ \ + AES_GFMUL(BY(COL, B0), 2)) + +#define AES_MIXCOLUMN(COL) ( \ + AES_MIXBYTE(COL, 3, 0, 1, 2) << 24 | \ + AES_MIXBYTE(COL, 2, 3, 0, 1) << 16 | \ + AES_MIXBYTE(COL, 1, 2, 3, 0) << 8 | AES_MIXBYTE(COL, 0, 1, 2, 3) << 0) + +#define AES_INVMIXBYTE(COL, B0, B1, B2, B3) ( \ + AES_GFMUL(BY(COL, B3), 0x9) ^ AES_GFMUL(BY(COL, B2), 0xd) ^ \ + AES_GFMUL(BY(COL, B1), 0xb) ^ AES_GFMUL(BY(COL, B0), 0xe)) + +#define AES_INVMIXCOLUMN(COL) ( \ + AES_INVMIXBYTE(COL, 3, 0, 1, 2) << 24 | \ + AES_INVMIXBYTE(COL, 2, 3, 0, 1) << 16 | \ + AES_INVMIXBYTE(COL, 1, 2, 3, 0) << 8 | \ + AES_INVMIXBYTE(COL, 0, 1, 2, 3) << 0) + +static inline target_ulong aes64_operation(target_ulong rs1, target_ulong rs2, + bool enc, bool mix) +{ + uint64_t RS1 = rs1; + uint64_t RS2 = rs2; + uint64_t result; + uint64_t temp; + uint32_t col_0; + uint32_t col_1; + + if (enc) { + temp = AES_SHIFROWS_LO(RS1, RS2); + temp = (((uint64_t)AES_sbox[(temp >> 0) & 0xFF] << 0) | + ((uint64_t)AES_sbox[(temp >> 8) & 0xFF] << 8) | + ((uint64_t)AES_sbox[(temp >> 16) & 0xFF] << 16) | + ((uint64_t)AES_sbox[(temp >> 24) & 0xFF] << 24) | + ((uint64_t)AES_sbox[(temp >> 32) & 0xFF] << 32) | + ((uint64_t)AES_sbox[(temp >> 40) & 0xFF] << 40) | + ((uint64_t)AES_sbox[(temp >> 48) & 0xFF] << 48) | + ((uint64_t)AES_sbox[(temp >> 56) & 0xFF] << 56)); + if (mix) { + col_0 = temp & 0xFFFFFFFF; + col_1 = temp >> 32; + + col_0 = AES_MIXCOLUMN(col_0); + col_1 = AES_MIXCOLUMN(col_1); + + result = ((uint64_t)col_1 << 32) | col_0; + } else { + result = temp; + } + } else { + temp = AES_INVSHIFROWS_LO(RS1, RS2); + temp = (((uint64_t)AES_isbox[(temp >> 0) & 0xFF] << 0) | + ((uint64_t)AES_isbox[(temp >> 8) & 0xFF] << 8) | + ((uint64_t)AES_isbox[(temp >> 16) & 0xFF] << 16) | + ((uint64_t)AES_isbox[(temp >> 24) & 0xFF] << 24) | + ((uint64_t)AES_isbox[(temp >> 32) & 0xFF] << 32) | + ((uint64_t)AES_isbox[(temp >> 40) & 0xFF] << 40) | + ((uint64_t)AES_isbox[(temp >> 48) & 0xFF] << 48) | + ((uint64_t)AES_isbox[(temp >> 56) & 0xFF] << 56)); + if (mix) { + col_0 = temp & 0xFFFFFFFF; + col_1 = temp >> 32; + + col_0 = AES_INVMIXCOLUMN(col_0); + col_1 = AES_INVMIXCOLUMN(col_1); + + result = ((uint64_t)col_1 << 32) | col_0; + } else { + result = temp; + } + } + + return result; +} + +target_ulong HELPER(aes64esm)(target_ulong rs1, target_ulong rs2) +{ + return aes64_operation(rs1, rs2, true, true); +} + +target_ulong HELPER(aes64es)(target_ulong rs1, target_ulong rs2) +{ + return aes64_operation(rs1, rs2, true, false); +} + +target_ulong HELPER(aes64ds)(target_ulong rs1, target_ulong rs2) +{ + return aes64_operation(rs1, rs2, false, false); +} + +target_ulong HELPER(aes64dsm)(target_ulong rs1, target_ulong rs2) +{ + return aes64_operation(rs1, rs2, false, true); +} + +target_ulong HELPER(aes64ks2)(target_ulong rs1, target_ulong rs2) +{ + uint64_t RS1 = rs1; + uint64_t RS2 = rs2; + uint32_t rs1_hi = RS1 >> 32; + uint32_t rs2_lo = RS2; + uint32_t rs2_hi = RS2 >> 32; + + uint32_t r_lo = (rs1_hi ^ rs2_lo); + uint32_t r_hi = (rs1_hi ^ rs2_lo ^ rs2_hi); + target_ulong result = ((uint64_t)r_hi << 32) | r_lo; + + return result; +} + +target_ulong HELPER(aes64ks1i)(target_ulong rs1, target_ulong rnum) +{ + uint64_t RS1 = rs1; + static const uint8_t round_consts[10] = { + 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36 + }; + + uint8_t enc_rnum = rnum; + uint32_t temp = (RS1 >> 32) & 0xFFFFFFFF; + uint8_t rcon_ = 0; + target_ulong result; + + if (enc_rnum != 0xA) { + temp = ror32(temp, 8); /* Rotate right by 8 */ + rcon_ = round_consts[enc_rnum]; + } + + temp = ((uint32_t)AES_sbox[(temp >> 24) & 0xFF] << 24) | + ((uint32_t)AES_sbox[(temp >> 16) & 0xFF] << 16) | + ((uint32_t)AES_sbox[(temp >> 8) & 0xFF] << 8) | + ((uint32_t)AES_sbox[(temp >> 0) & 0xFF] << 0); + + temp ^= rcon_; + + result = ((uint64_t)temp << 32) | temp; + + return result; +} + +target_ulong HELPER(aes64im)(target_ulong rs1) +{ + uint64_t RS1 = rs1; + uint32_t col_0 = RS1 & 0xFFFFFFFF; + uint32_t col_1 = RS1 >> 32; + target_ulong result; + + col_0 = AES_INVMIXCOLUMN(col_0); + col_1 = AES_INVMIXCOLUMN(col_1); + + result = ((uint64_t)col_1 << 32) | col_0; + + return result; +} #undef sext32_xlen diff --git a/target/riscv/helper.h b/target/riscv/helper.h index 3c4e7e6113..56519fcc26 100644 --- a/target/riscv/helper.h +++ b/target/riscv/helper.h @@ -1118,3 +1118,11 @@ DEF_HELPER_FLAGS_3(aes32esmi, TCG_CALL_NO_RWG_SE, tl, tl, tl, tl) DEF_HELPER_FLAGS_3(aes32esi, TCG_CALL_NO_RWG_SE, tl, tl, tl, tl) DEF_HELPER_FLAGS_3(aes32dsmi, TCG_CALL_NO_RWG_SE, tl, tl, tl, tl) DEF_HELPER_FLAGS_3(aes32dsi, TCG_CALL_NO_RWG_SE, tl, tl, tl, tl) + +DEF_HELPER_FLAGS_2(aes64esm, TCG_CALL_NO_RWG_SE, tl, tl, tl) +DEF_HELPER_FLAGS_2(aes64es, TCG_CALL_NO_RWG_SE, tl, tl, tl) +DEF_HELPER_FLAGS_2(aes64ds, TCG_CALL_NO_RWG_SE, tl, tl, tl) +DEF_HELPER_FLAGS_2(aes64dsm, TCG_CALL_NO_RWG_SE, tl, tl, tl) +DEF_HELPER_FLAGS_2(aes64ks2, TCG_CALL_NO_RWG_SE, tl, tl, tl) +DEF_HELPER_FLAGS_2(aes64ks1i, TCG_CALL_NO_RWG_SE, tl, tl, tl) +DEF_HELPER_FLAGS_1(aes64im, TCG_CALL_NO_RWG_SE, tl, tl) diff --git a/target/riscv/insn32.decode b/target/riscv/insn32.decode index 0f2e661583..0b800b4093 100644 --- a/target/riscv/insn32.decode +++ b/target/riscv/insn32.decode @@ -36,6 +36,7 @@ %imm_j 31:s1 12:8 20:1 21:10 !function=ex_shift_1 %imm_u 12:s20 !function=ex_shift_12 %imm_bs 30:2 !function=ex_shift_3 +%imm_rnum 20:4 # Argument sets: &empty @@ -92,6 +93,7 @@ @sfence_vm ....... ..... ..... ... ..... ....... %rs1 @k_aes .. ..... ..... ..... ... ..... ....... &k_aes shamt=%imm_bs %rs2 %rs1 %rd +@i_aes .. ..... ..... ..... ... ..... ....... &i imm=%imm_rnum %rs1 %rd # Formats 64: @sh5 ....... ..... ..... ... ..... ....... &shift shamt=%sh5 %rs1 %rd @@ -842,6 +844,16 @@ hinval_gvma 0110011 ..... ..... 000 00000 1110011 @hfence_gvma # *** RV32 Zknd Standard Extension *** aes32dsmi .. 10111 ..... ..... 000 ..... 0110011 @k_aes aes32dsi .. 10101 ..... ..... 000 ..... 0110011 @k_aes +# *** RV64 Zknd Standard Extension *** +aes64dsm 00 11111 ..... ..... 000 ..... 0110011 @r +aes64ds 00 11101 ..... ..... 000 ..... 0110011 @r +aes64im 00 11000 00000 ..... 001 ..... 0010011 @r2 # *** RV32 Zkne Standard Extension *** aes32esmi .. 10011 ..... ..... 000 ..... 0110011 @k_aes aes32esi .. 10001 ..... ..... 000 ..... 0110011 @k_aes +# *** RV64 Zkne Standard Extension *** +aes64es 00 11001 ..... ..... 000 ..... 0110011 @r +aes64esm 00 11011 ..... ..... 000 ..... 0110011 @r +# *** RV64 Zkne/zknd Standard Extension *** +aes64ks2 01 11111 ..... ..... 000 ..... 0110011 @r +aes64ks1i 00 11000 1.... ..... 001 ..... 0010011 @i_aes diff --git a/target/riscv/insn_trans/trans_rvk.c.inc b/target/riscv/insn_trans/trans_rvk.c.inc index 8d0b42106f..6336b48cb5 100644 --- a/target/riscv/insn_trans/trans_rvk.c.inc +++ b/target/riscv/insn_trans/trans_rvk.c.inc @@ -69,3 +69,57 @@ static bool trans_aes32dsi(DisasContext *ctx, arg_aes32dsi *a) REQUIRE_ZKND(ctx); return gen_aes32_sm4(ctx, a, gen_helper_aes32dsi); } + +static bool trans_aes64es(DisasContext *ctx, arg_aes64es *a) +{ + REQUIRE_64BIT(ctx); + REQUIRE_ZKNE(ctx); + return gen_arith(ctx, a, EXT_NONE, gen_helper_aes64es, NULL); +} + +static bool trans_aes64esm(DisasContext *ctx, arg_aes64esm *a) +{ + REQUIRE_64BIT(ctx); + REQUIRE_ZKNE(ctx); + return gen_arith(ctx, a, EXT_NONE, gen_helper_aes64esm, NULL); +} + +static bool trans_aes64ds(DisasContext *ctx, arg_aes64ds *a) +{ + REQUIRE_64BIT(ctx); + REQUIRE_ZKND(ctx); + return gen_arith(ctx, a, EXT_NONE, gen_helper_aes64ds, NULL); +} + +static bool trans_aes64dsm(DisasContext *ctx, arg_aes64dsm *a) +{ + REQUIRE_64BIT(ctx); + REQUIRE_ZKND(ctx); + return gen_arith(ctx, a, EXT_NONE, gen_helper_aes64dsm, NULL); +} + +static bool trans_aes64ks2(DisasContext *ctx, arg_aes64ks2 *a) +{ + REQUIRE_64BIT(ctx); + REQUIRE_EITHER_EXT(ctx, zknd, zkne); + return gen_arith(ctx, a, EXT_NONE, gen_helper_aes64ks2, NULL); +} + +static bool trans_aes64ks1i(DisasContext *ctx, arg_aes64ks1i *a) +{ + REQUIRE_64BIT(ctx); + REQUIRE_EITHER_EXT(ctx, zknd, zkne); + + if (a->imm > 0xA) { + return false; + } + + return gen_arith_imm_tl(ctx, a, EXT_NONE, gen_helper_aes64ks1i, NULL); +} + +static bool trans_aes64im(DisasContext *ctx, arg_aes64im *a) +{ + REQUIRE_64BIT(ctx); + REQUIRE_ZKND(ctx); + return gen_unary(ctx, a, EXT_NONE, gen_helper_aes64im); +} -- 2.11.0