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target/mips: add Octeon Camellia COP2 helpers

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Add helper support for the Octeon Camellia ROUND, FL, and FLINV
selectors. The engine reuses the AES RESINP bank, and guest-managed key
schedules drive the Camellia F-function and FL layers through these COP2
operations.

Implement the Camellia F-function and FL layers directly from RFC 3713.

Signed-off-by: James Hilliard <james.hilliard1@gmail.com>
Message-ID: <20260608-mips-octeon-missing-insns-v2-v16-11-daef7a0d8b04@gmail.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@oss.qualcomm.com>
This commit is contained in:
James Hilliard
2026-06-08 12:59:36 -06:00
committed by Philippe Mathieu-Daudé
parent ff155dd718
commit c75e3503c8
2 changed files with 129 additions and 0 deletions
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3
target/mips/helper.h
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@@ -66,6 +66,9 @@ DEF_HELPER_2(octeon_cp2_mt_des3_enc, void, env, i64)
DEF_HELPER_2(octeon_cp2_mt_kas_enc, void, env, i64)
DEF_HELPER_2(octeon_cp2_mt_des3_dec_cbc, void, env, i64)
DEF_HELPER_2(octeon_cp2_mt_des3_dec, void, env, i64)
DEF_HELPER_2(octeon_cp2_mt_camellia_fl, void, env, i64)
DEF_HELPER_2(octeon_cp2_mt_camellia_flinv, void, env, i64)
DEF_HELPER_2(octeon_cp2_mt_camellia_round, void, env, i64)
/* microMIPS functions */
DEF_HELPER_4(lwm, void, env, tl, tl, i32)

126
target/mips/tcg/octeon_crypto.c
View File

@@ -1566,6 +1566,132 @@ void helper_octeon_cp2_mt_des3_dec(CPUMIPSState *env, uint64_t value)
octeon_3des_crypt_common(&env->octeon_crypto, value, false, false);
}
static const uint8_t camellia_sbox1[256] = {
112, 130, 44, 236, 179, 39, 192, 229, 228, 133, 87, 53, 234, 12,
174, 65, 35, 239, 107, 147, 69, 25, 165, 33, 237, 14, 79, 78,
29, 101, 146, 189, 134, 184, 175, 143, 124, 235, 31, 206, 62, 48,
220, 95, 94, 197, 11, 26, 166, 225, 57, 202, 213, 71, 93, 61,
217, 1, 90, 214, 81, 86, 108, 77, 139, 13, 154, 102, 251, 204,
176, 45, 116, 18, 43, 32, 240, 177, 132, 153, 223, 76, 203, 194,
52, 126, 118, 5, 109, 183, 169, 49, 209, 23, 4, 215, 20, 88,
58, 97, 222, 27, 17, 28, 50, 15, 156, 22, 83, 24, 242, 34,
254, 68, 207, 178, 195, 181, 122, 145, 36, 8, 232, 168, 96, 252,
105, 80, 170, 208, 160, 125, 161, 137, 98, 151, 84, 91, 30, 149,
224, 255, 100, 210, 16, 196, 0, 72, 163, 247, 117, 219, 138, 3,
230, 218, 9, 63, 221, 148, 135, 92, 131, 2, 205, 74, 144, 51,
115, 103, 246, 243, 157, 127, 191, 226, 82, 155, 216, 38, 200, 55,
198, 59, 129, 150, 111, 75, 19, 190, 99, 46, 233, 121, 167, 140,
159, 110, 188, 142, 41, 245, 249, 182, 47, 253, 180, 89, 120, 152,
6, 106, 231, 70, 113, 186, 212, 37, 171, 66, 136, 162, 141, 250,
114, 7, 185, 85, 248, 238, 172, 10, 54, 73, 42, 104, 60, 56,
241, 164, 64, 40, 211, 123, 187, 201, 67, 193, 21, 227, 173, 244,
119, 199, 128, 158,
};
static uint8_t camellia_rotl8(uint8_t v, unsigned int shift)
{
return (v << shift) | (v >> (8 - shift));
}
static uint8_t camellia_sbox2(uint8_t x)
{
return camellia_rotl8(camellia_sbox1[x], 1);
}
static uint8_t camellia_sbox3(uint8_t x)
{
return camellia_rotl8(camellia_sbox1[x], 7);
}
static uint8_t camellia_sbox4(uint8_t x)
{
return camellia_sbox1[camellia_rotl8(x, 1)];
}
static uint64_t camellia_f(uint64_t input, uint64_t key)
{
uint64_t x = input ^ key;
uint8_t t1 = camellia_sbox1[x >> 56];
uint8_t t2 = camellia_sbox2((x >> 48) & 0xff);
uint8_t t3 = camellia_sbox3((x >> 40) & 0xff);
uint8_t t4 = camellia_sbox4((x >> 32) & 0xff);
uint8_t t5 = camellia_sbox2((x >> 24) & 0xff);
uint8_t t6 = camellia_sbox3((x >> 16) & 0xff);
uint8_t t7 = camellia_sbox4((x >> 8) & 0xff);
uint8_t t8 = camellia_sbox1[x & 0xff];
uint8_t y1 = t1 ^ t3 ^ t4 ^ t6 ^ t7 ^ t8;
uint8_t y2 = t1 ^ t2 ^ t4 ^ t5 ^ t7 ^ t8;
uint8_t y3 = t1 ^ t2 ^ t3 ^ t5 ^ t6 ^ t8;
uint8_t y4 = t2 ^ t3 ^ t4 ^ t5 ^ t6 ^ t7;
uint8_t y5 = t1 ^ t2 ^ t6 ^ t7 ^ t8;
uint8_t y6 = t2 ^ t3 ^ t5 ^ t7 ^ t8;
uint8_t y7 = t3 ^ t4 ^ t5 ^ t6 ^ t8;
uint8_t y8 = t1 ^ t4 ^ t5 ^ t6 ^ t7;
return ((uint64_t)y1 << 56) | ((uint64_t)y2 << 48) |
((uint64_t)y3 << 40) | ((uint64_t)y4 << 32) |
((uint64_t)y5 << 24) | ((uint64_t)y6 << 16) |
((uint64_t)y7 << 8) | y8;
}
static uint64_t camellia_fl(uint64_t input, uint64_t key)
{
uint32_t x1 = input >> 32;
uint32_t x2 = input;
uint32_t k1 = key >> 32;
uint32_t k2 = key;
x2 ^= rol32(x1 & k1, 1);
x1 ^= x2 | k2;
return ((uint64_t)x1 << 32) | x2;
}
static uint64_t camellia_flinv(uint64_t input, uint64_t key)
{
uint32_t y1 = input >> 32;
uint32_t y2 = input;
uint32_t k1 = key >> 32;
uint32_t k2 = key;
y1 ^= y2 | k2;
y2 ^= rol32(y1 & k1, 1);
return ((uint64_t)y1 << 32) | y2;
}
static void octeon_camellia_round(MIPSOcteonCryptoState *crypto, uint64_t key)
{
uint64_t left = crypto->aes_resinp[0];
uint64_t right = crypto->aes_resinp[1];
crypto->aes_resinp[0] = right ^ camellia_f(left, key);
crypto->aes_resinp[1] = left;
}
static void octeon_camellia_fl_layer(MIPSOcteonCryptoState *crypto,
uint64_t key, bool inverse)
{
uint64_t state = crypto->aes_resinp[inverse ? 1 : 0];
crypto->aes_resinp[inverse ? 1 : 0] = inverse ?
camellia_flinv(state, key) :
camellia_fl(state, key);
}
void helper_octeon_cp2_mt_camellia_fl(CPUMIPSState *env, uint64_t value)
{
octeon_camellia_fl_layer(&env->octeon_crypto, value, false);
}
void helper_octeon_cp2_mt_camellia_flinv(CPUMIPSState *env, uint64_t value)
{
octeon_camellia_fl_layer(&env->octeon_crypto, value, true);
}
void helper_octeon_cp2_mt_camellia_round(CPUMIPSState *env, uint64_t value)
{
octeon_camellia_round(&env->octeon_crypto, value);
}
void helper_octeon_cp2_mt_snow3g_start(CPUMIPSState *env, uint64_t value)
{
octeon_snow3g_start(&env->octeon_crypto, value);