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author | Richard Henderson <richard.henderson@linaro.org> | 2023-06-01 11:28:17 -0700 |
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committer | Richard Henderson <richard.henderson@linaro.org> | 2023-07-08 07:30:17 +0100 |
commit | ca1e9c3ba1f7b8f20154e164c5b7b6c026e24cda (patch) | |
tree | e5f510c5675e59d93dab14b046fc51db07dfe27c | |
parent | 623d7e3551a6fc5693c06ea938c60fe281b52e27 (diff) | |
download | qemu-ca1e9c3ba1f7b8f20154e164c5b7b6c026e24cda.zip qemu-ca1e9c3ba1f7b8f20154e164c5b7b6c026e24cda.tar.gz qemu-ca1e9c3ba1f7b8f20154e164c5b7b6c026e24cda.tar.bz2 |
tests/multiarch: Add test-aes
Use a shared driver and backends for i386, aarch64, ppc64, riscv64.
Acked-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
-rw-r--r-- | tests/tcg/aarch64/Makefile.target | 4 | ||||
-rw-r--r-- | tests/tcg/aarch64/test-aes.c | 58 | ||||
-rw-r--r-- | tests/tcg/i386/Makefile.target | 4 | ||||
-rw-r--r-- | tests/tcg/i386/test-aes.c | 68 | ||||
-rw-r--r-- | tests/tcg/multiarch/test-aes-main.c.inc | 183 | ||||
-rw-r--r-- | tests/tcg/ppc64/Makefile.target | 1 | ||||
-rw-r--r-- | tests/tcg/ppc64/test-aes.c | 116 | ||||
-rw-r--r-- | tests/tcg/riscv64/Makefile.target | 3 | ||||
-rw-r--r-- | tests/tcg/riscv64/test-aes.c | 81 |
9 files changed, 518 insertions, 0 deletions
diff --git a/tests/tcg/aarch64/Makefile.target b/tests/tcg/aarch64/Makefile.target index 0606dec..617f821 100644 --- a/tests/tcg/aarch64/Makefile.target +++ b/tests/tcg/aarch64/Makefile.target @@ -74,6 +74,10 @@ ifneq ($(CROSS_CC_HAS_SVE),) AARCH64_TESTS += sve-ioctls sve-ioctls: CFLAGS+=-march=armv8.1-a+sve +AARCH64_TESTS += test-aes +test-aes: CFLAGS += -O -march=armv8-a+aes +test-aes: test-aes-main.c.inc + # Vector SHA1 sha1-vector: CFLAGS=-O3 sha1-vector: sha1.c diff --git a/tests/tcg/aarch64/test-aes.c b/tests/tcg/aarch64/test-aes.c new file mode 100644 index 0000000..2cd324f --- /dev/null +++ b/tests/tcg/aarch64/test-aes.c @@ -0,0 +1,58 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ + +#include "../multiarch/test-aes-main.c.inc" + +bool test_SB_SR(uint8_t *o, const uint8_t *i) +{ + /* aese also adds round key, so supply zero. */ + asm("ld1 { v0.16b }, [%1]\n\t" + "movi v1.16b, #0\n\t" + "aese v0.16b, v1.16b\n\t" + "st1 { v0.16b }, [%0]" + : : "r"(o), "r"(i) : "v0", "v1", "memory"); + return true; +} + +bool test_MC(uint8_t *o, const uint8_t *i) +{ + asm("ld1 { v0.16b }, [%1]\n\t" + "aesmc v0.16b, v0.16b\n\t" + "st1 { v0.16b }, [%0]" + : : "r"(o), "r"(i) : "v0", "memory"); + return true; +} + +bool test_SB_SR_MC_AK(uint8_t *o, const uint8_t *i, const uint8_t *k) +{ + return false; +} + +bool test_ISB_ISR(uint8_t *o, const uint8_t *i) +{ + /* aesd also adds round key, so supply zero. */ + asm("ld1 { v0.16b }, [%1]\n\t" + "movi v1.16b, #0\n\t" + "aesd v0.16b, v1.16b\n\t" + "st1 { v0.16b }, [%0]" + : : "r"(o), "r"(i) : "v0", "v1", "memory"); + return true; +} + +bool test_IMC(uint8_t *o, const uint8_t *i) +{ + asm("ld1 { v0.16b }, [%1]\n\t" + "aesimc v0.16b, v0.16b\n\t" + "st1 { v0.16b }, [%0]" + : : "r"(o), "r"(i) : "v0", "memory"); + return true; +} + +bool test_ISB_ISR_AK_IMC(uint8_t *o, const uint8_t *i, const uint8_t *k) +{ + return false; +} + +bool test_ISB_ISR_IMC_AK(uint8_t *o, const uint8_t *i, const uint8_t *k) +{ + return false; +} diff --git a/tests/tcg/i386/Makefile.target b/tests/tcg/i386/Makefile.target index f2ee7a4..fdf757c 100644 --- a/tests/tcg/i386/Makefile.target +++ b/tests/tcg/i386/Makefile.target @@ -28,6 +28,10 @@ run-test-i386-bmi2: QEMU_OPTS += -cpu max test-i386-adcox: CFLAGS=-O2 run-test-i386-adcox: QEMU_OPTS += -cpu max +test-aes: CFLAGS += -O -msse2 -maes +test-aes: test-aes-main.c.inc +run-test-aes: QEMU_OPTS += -cpu max + # # hello-i386 is a barebones app # diff --git a/tests/tcg/i386/test-aes.c b/tests/tcg/i386/test-aes.c new file mode 100644 index 0000000..199395e --- /dev/null +++ b/tests/tcg/i386/test-aes.c @@ -0,0 +1,68 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ + +#include "../multiarch/test-aes-main.c.inc" +#include <immintrin.h> + +static bool test_SB_SR(uint8_t *o, const uint8_t *i) +{ + __m128i vi = _mm_loadu_si128((const __m128i_u *)i); + + /* aesenclast also adds round key, so supply zero. */ + vi = _mm_aesenclast_si128(vi, _mm_setzero_si128()); + + _mm_storeu_si128((__m128i_u *)o, vi); + return true; +} + +static bool test_MC(uint8_t *o, const uint8_t *i) +{ + return false; +} + +static bool test_SB_SR_MC_AK(uint8_t *o, const uint8_t *i, const uint8_t *k) +{ + __m128i vi = _mm_loadu_si128((const __m128i_u *)i); + __m128i vk = _mm_loadu_si128((const __m128i_u *)k); + + vi = _mm_aesenc_si128(vi, vk); + + _mm_storeu_si128((__m128i_u *)o, vi); + return true; +} + +static bool test_ISB_ISR(uint8_t *o, const uint8_t *i) +{ + __m128i vi = _mm_loadu_si128((const __m128i_u *)i); + + /* aesdeclast also adds round key, so supply zero. */ + vi = _mm_aesdeclast_si128(vi, _mm_setzero_si128()); + + _mm_storeu_si128((__m128i_u *)o, vi); + return true; +} + +static bool test_IMC(uint8_t *o, const uint8_t *i) +{ + __m128i vi = _mm_loadu_si128((const __m128i_u *)i); + + vi = _mm_aesimc_si128(vi); + + _mm_storeu_si128((__m128i_u *)o, vi); + return true; +} + +static bool test_ISB_ISR_AK_IMC(uint8_t *o, const uint8_t *i, const uint8_t *k) +{ + return false; +} + +static bool test_ISB_ISR_IMC_AK(uint8_t *o, const uint8_t *i, const uint8_t *k) +{ + __m128i vi = _mm_loadu_si128((const __m128i_u *)i); + __m128i vk = _mm_loadu_si128((const __m128i_u *)k); + + vi = _mm_aesdec_si128(vi, vk); + + _mm_storeu_si128((__m128i_u *)o, vi); + return true; +} diff --git a/tests/tcg/multiarch/test-aes-main.c.inc b/tests/tcg/multiarch/test-aes-main.c.inc new file mode 100644 index 0000000..4b5f7f9 --- /dev/null +++ b/tests/tcg/multiarch/test-aes-main.c.inc @@ -0,0 +1,183 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ + +#include <stdint.h> +#include <stdbool.h> +#include <stdlib.h> +#include <string.h> +#include <stdio.h> + +static bool test_SB_SR(uint8_t *o, const uint8_t *i); +static bool test_MC(uint8_t *o, const uint8_t *i); +static bool test_SB_SR_MC_AK(uint8_t *o, const uint8_t *i, const uint8_t *k); + +static bool test_ISB_ISR(uint8_t *o, const uint8_t *i); +static bool test_IMC(uint8_t *o, const uint8_t *i); +static bool test_ISB_ISR_AK_IMC(uint8_t *o, const uint8_t *i, const uint8_t *k); +static bool test_ISB_ISR_IMC_AK(uint8_t *o, const uint8_t *i, const uint8_t *k); + +/* + * From https://doi.org/10.6028/NIST.FIPS.197-upd1, + * Appendix B -- Cipher Example + * + * Note that the formatting of the 4x4 matrices in the document is + * column-major, whereas C is row-major. Therefore to get the bytes + * in the same order as the text, the matrices are transposed. + * + * Note that we are not going to test SubBytes or ShiftRows separately, + * so the "After SubBytes" column is omitted, using only the combined + * result "After ShiftRows" column. + */ + +/* Ease the inline assembly by aligning everything. */ +typedef struct { + uint8_t b[16] __attribute__((aligned(16))); +} State; + +typedef struct { + State start, after_sr, after_mc, round_key; +} Round; + +static const Round rounds[] = { + /* Round 1 */ + { { { 0x19, 0x3d, 0xe3, 0xbe, /* start */ + 0xa0, 0xf4, 0xe2, 0x2b, + 0x9a, 0xc6, 0x8d, 0x2a, + 0xe9, 0xf8, 0x48, 0x08, } }, + + { { 0xd4, 0xbf, 0x5d, 0x30, /* after shiftrows */ + 0xe0, 0xb4, 0x52, 0xae, + 0xb8, 0x41, 0x11, 0xf1, + 0x1e, 0x27, 0x98, 0xe5, } }, + + { { 0x04, 0x66, 0x81, 0xe5, /* after mixcolumns */ + 0xe0, 0xcb, 0x19, 0x9a, + 0x48, 0xf8, 0xd3, 0x7a, + 0x28, 0x06, 0x26, 0x4c, } }, + + { { 0xa0, 0xfa, 0xfe, 0x17, /* round key */ + 0x88, 0x54, 0x2c, 0xb1, + 0x23, 0xa3, 0x39, 0x39, + 0x2a, 0x6c, 0x76, 0x05, } } }, + + /* Round 2 */ + { { { 0xa4, 0x9c, 0x7f, 0xf2, /* start */ + 0x68, 0x9f, 0x35, 0x2b, + 0x6b, 0x5b, 0xea, 0x43, + 0x02, 0x6a, 0x50, 0x49, } }, + + { { 0x49, 0xdb, 0x87, 0x3b, /* after shiftrows */ + 0x45, 0x39, 0x53, 0x89, + 0x7f, 0x02, 0xd2, 0xf1, + 0x77, 0xde, 0x96, 0x1a, } }, + + { { 0x58, 0x4d, 0xca, 0xf1, /* after mixcolumns */ + 0x1b, 0x4b, 0x5a, 0xac, + 0xdb, 0xe7, 0xca, 0xa8, + 0x1b, 0x6b, 0xb0, 0xe5, } }, + + { { 0xf2, 0xc2, 0x95, 0xf2, /* round key */ + 0x7a, 0x96, 0xb9, 0x43, + 0x59, 0x35, 0x80, 0x7a, + 0x73, 0x59, 0xf6, 0x7f, } } }, + + /* Round 3 */ + { { { 0xaa, 0x8f, 0x5f, 0x03, /* start */ + 0x61, 0xdd, 0xe3, 0xef, + 0x82, 0xd2, 0x4a, 0xd2, + 0x68, 0x32, 0x46, 0x9a, } }, + + { { 0xac, 0xc1, 0xd6, 0xb8, /* after shiftrows */ + 0xef, 0xb5, 0x5a, 0x7b, + 0x13, 0x23, 0xcf, 0xdf, + 0x45, 0x73, 0x11, 0xb5, } }, + + { { 0x75, 0xec, 0x09, 0x93, /* after mixcolumns */ + 0x20, 0x0b, 0x63, 0x33, + 0x53, 0xc0, 0xcf, 0x7c, + 0xbb, 0x25, 0xd0, 0xdc, } }, + + { { 0x3d, 0x80, 0x47, 0x7d, /* round key */ + 0x47, 0x16, 0xfe, 0x3e, + 0x1e, 0x23, 0x7e, 0x44, + 0x6d, 0x7a, 0x88, 0x3b, } } }, +}; + +static void verify_log(const char *prefix, const State *s) +{ + printf("%s:", prefix); + for (int i = 0; i < sizeof(State); ++i) { + printf(" %02x", s->b[i]); + } + printf("\n"); +} + +static void verify(const State *ref, const State *tst, const char *which) +{ + if (!memcmp(ref, tst, sizeof(State))) { + return; + } + + printf("Mismatch on %s\n", which); + verify_log("ref", ref); + verify_log("tst", tst); + exit(EXIT_FAILURE); +} + +int main() +{ + int i, n = sizeof(rounds) / sizeof(Round); + State t; + + for (i = 0; i < n; ++i) { + if (test_SB_SR(t.b, rounds[i].start.b)) { + verify(&rounds[i].after_sr, &t, "SB+SR"); + } + } + + for (i = 0; i < n; ++i) { + if (test_MC(t.b, rounds[i].after_sr.b)) { + verify(&rounds[i].after_mc, &t, "MC"); + } + } + + /* The kernel of Cipher(). */ + for (i = 0; i < n - 1; ++i) { + if (test_SB_SR_MC_AK(t.b, rounds[i].start.b, rounds[i].round_key.b)) { + verify(&rounds[i + 1].start, &t, "SB+SR+MC+AK"); + } + } + + for (i = 0; i < n; ++i) { + if (test_ISB_ISR(t.b, rounds[i].after_sr.b)) { + verify(&rounds[i].start, &t, "ISB+ISR"); + } + } + + for (i = 0; i < n; ++i) { + if (test_IMC(t.b, rounds[i].after_mc.b)) { + verify(&rounds[i].after_sr, &t, "IMC"); + } + } + + /* The kernel of InvCipher(). */ + for (i = n - 1; i > 0; --i) { + if (test_ISB_ISR_AK_IMC(t.b, rounds[i].after_sr.b, + rounds[i - 1].round_key.b)) { + verify(&rounds[i - 1].after_sr, &t, "ISB+ISR+AK+IMC"); + } + } + + /* + * The kernel of EqInvCipher(). + * We must compute a different round key: apply InvMixColumns to + * the standard round key, per KeyExpansion vs KeyExpansionEIC. + */ + for (i = 1; i < n; ++i) { + if (test_IMC(t.b, rounds[i - 1].round_key.b) && + test_ISB_ISR_IMC_AK(t.b, rounds[i].after_sr.b, t.b)) { + verify(&rounds[i - 1].after_sr, &t, "ISB+ISR+IMC+AK"); + } + } + + return EXIT_SUCCESS; +} diff --git a/tests/tcg/ppc64/Makefile.target b/tests/tcg/ppc64/Makefile.target index b084963..5721c15 100644 --- a/tests/tcg/ppc64/Makefile.target +++ b/tests/tcg/ppc64/Makefile.target @@ -36,5 +36,6 @@ run-vector: QEMU_OPTS += -cpu POWER10 PPC64_TESTS += signal_save_restore_xer PPC64_TESTS += xxspltw +PPC64_TESTS += test-aes TESTS += $(PPC64_TESTS) diff --git a/tests/tcg/ppc64/test-aes.c b/tests/tcg/ppc64/test-aes.c new file mode 100644 index 0000000..1d2be48 --- /dev/null +++ b/tests/tcg/ppc64/test-aes.c @@ -0,0 +1,116 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ + +#include "../multiarch/test-aes-main.c.inc" + +#undef BIG_ENDIAN +#define BIG_ENDIAN (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) + +static unsigned char bswap_le[16] __attribute__((aligned(16))) = { + 8,9,10,11,12,13,14,15, + 0,1,2,3,4,5,6,7 +}; + +bool test_SB_SR(uint8_t *o, const uint8_t *i) +{ + /* vcipherlast also adds round key, so supply zero. */ + if (BIG_ENDIAN) { + asm("lxvd2x 32,0,%1\n\t" + "vspltisb 1,0\n\t" + "vcipherlast 0,0,1\n\t" + "stxvd2x 32,0,%0" + : : "r"(o), "r"(i) : "memory", "v0", "v1"); + } else { + asm("lxvd2x 32,0,%1\n\t" + "lxvd2x 34,0,%2\n\t" + "vspltisb 1,0\n\t" + "vperm 0,0,0,2\n\t" + "vcipherlast 0,0,1\n\t" + "vperm 0,0,0,2\n\t" + "stxvd2x 32,0,%0" + : : "r"(o), "r"(i), "r"(bswap_le) : "memory", "v0", "v1", "v2"); + } + return true; +} + +bool test_MC(uint8_t *o, const uint8_t *i) +{ + return false; +} + +bool test_SB_SR_MC_AK(uint8_t *o, const uint8_t *i, const uint8_t *k) +{ + if (BIG_ENDIAN) { + asm("lxvd2x 32,0,%1\n\t" + "lxvd2x 33,0,%2\n\t" + "vcipher 0,0,1\n\t" + "stxvd2x 32,0,%0" + : : "r"(o), "r"(i), "r"(k) : "memory", "v0", "v1"); + } else { + asm("lxvd2x 32,0,%1\n\t" + "lxvd2x 33,0,%2\n\t" + "lxvd2x 34,0,%3\n\t" + "vperm 0,0,0,2\n\t" + "vperm 1,1,1,2\n\t" + "vcipher 0,0,1\n\t" + "vperm 0,0,0,2\n\t" + "stxvd2x 32,0,%0" + : : "r"(o), "r"(i), "r"(k), "r"(bswap_le) + : "memory", "v0", "v1", "v2"); + } + return true; +} + +bool test_ISB_ISR(uint8_t *o, const uint8_t *i) +{ + /* vcipherlast also adds round key, so supply zero. */ + if (BIG_ENDIAN) { + asm("lxvd2x 32,0,%1\n\t" + "vspltisb 1,0\n\t" + "vncipherlast 0,0,1\n\t" + "stxvd2x 32,0,%0" + : : "r"(o), "r"(i) : "memory", "v0", "v1"); + } else { + asm("lxvd2x 32,0,%1\n\t" + "lxvd2x 34,0,%2\n\t" + "vspltisb 1,0\n\t" + "vperm 0,0,0,2\n\t" + "vncipherlast 0,0,1\n\t" + "vperm 0,0,0,2\n\t" + "stxvd2x 32,0,%0" + : : "r"(o), "r"(i), "r"(bswap_le) : "memory", "v0", "v1", "v2"); + } + return true; +} + +bool test_IMC(uint8_t *o, const uint8_t *i) +{ + return false; +} + +bool test_ISB_ISR_AK_IMC(uint8_t *o, const uint8_t *i, const uint8_t *k) +{ + if (BIG_ENDIAN) { + asm("lxvd2x 32,0,%1\n\t" + "lxvd2x 33,0,%2\n\t" + "vncipher 0,0,1\n\t" + "stxvd2x 32,0,%0" + : : "r"(o), "r"(i), "r"(k) : "memory", "v0", "v1"); + } else { + asm("lxvd2x 32,0,%1\n\t" + "lxvd2x 33,0,%2\n\t" + "lxvd2x 34,0,%3\n\t" + "vperm 0,0,0,2\n\t" + "vperm 1,1,1,2\n\t" + "vncipher 0,0,1\n\t" + "vperm 0,0,0,2\n\t" + "stxvd2x 32,0,%0" + : : "r"(o), "r"(i), "r"(k), "r"(bswap_le) + : "memory", "v0", "v1", "v2"); + } + return true; +} + +bool test_ISB_ISR_IMC_AK(uint8_t *o, const uint8_t *i, const uint8_t *k) +{ + return false; +} diff --git a/tests/tcg/riscv64/Makefile.target b/tests/tcg/riscv64/Makefile.target index 9973ba3..4299354 100644 --- a/tests/tcg/riscv64/Makefile.target +++ b/tests/tcg/riscv64/Makefile.target @@ -9,3 +9,6 @@ TESTS += noexec TESTS += test-noc test-noc: LDFLAGS = -nostdlib -static run-test-noc: QEMU_OPTS += -cpu rv64,c=false + +TESTS += test-aes +run-test-aes: QEMU_OPTS += -cpu rv64,zk=on diff --git a/tests/tcg/riscv64/test-aes.c b/tests/tcg/riscv64/test-aes.c new file mode 100644 index 0000000..6a0ef77 --- /dev/null +++ b/tests/tcg/riscv64/test-aes.c @@ -0,0 +1,81 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ + +#include "../multiarch/test-aes-main.c.inc" + +bool test_SB_SR(uint8_t *o, const uint8_t *i) +{ + uint64_t *o8 = (uint64_t *)o; + const uint64_t *i8 = (const uint64_t *)i; + + /* aes64es rd, rs1, rs2 = 0011001 rs2 rs1 000 rd 0110011 */ + asm(".insn r 0x33, 0x0, 0x19, %0, %2, %3\n\t" + ".insn r 0x33, 0x0, 0x19, %1, %3, %2" + : "=&r"(o8[0]), "=&r"(o8[1]) : "r"(i8[0]), "r"(i8[1])); + return true; +} + +bool test_MC(uint8_t *o, const uint8_t *i) +{ + return false; +} + +bool test_SB_SR_MC_AK(uint8_t *o, const uint8_t *i, const uint8_t *k) +{ + uint64_t *o8 = (uint64_t *)o; + const uint64_t *i8 = (const uint64_t *)i; + const uint64_t *k8 = (const uint64_t *)k; + + /* aesesm rd, rs1, rs2 = 0011011 rs2 rs1 000 rd 0110011 */ + asm(".insn r 0x33, 0x0, 0x1b, %0, %2, %3\n\t" + ".insn r 0x33, 0x0, 0x1b, %1, %3, %2\n\t" + "xor %0,%0,%4\n\t" + "xor %1,%1,%5" + : "=&r"(o8[0]), "=&r"(o8[1]) + : "r"(i8[0]), "r"(i8[1]), "r"(k8[0]), "r"(k8[1])); + return true; +} + +bool test_ISB_ISR(uint8_t *o, const uint8_t *i) +{ + uint64_t *o8 = (uint64_t *)o; + const uint64_t *i8 = (const uint64_t *)i; + + /* aes64ds rd, rs1, rs2 = 0011101 rs2 rs1 000 rd 0110011 */ + asm(".insn r 0x33, 0x0, 0x1d, %0, %2, %3\n\t" + ".insn r 0x33, 0x0, 0x1d, %1, %3, %2" + : "=&r"(o8[0]), "=&r"(o8[1]) : "r"(i8[0]), "r"(i8[1])); + return true; +} + +bool test_IMC(uint8_t *o, const uint8_t *i) +{ + uint64_t *o8 = (uint64_t *)o; + const uint64_t *i8 = (const uint64_t *)i; + + /* aes64im rd, rs1 = 0011000 00000 rs1 001 rd 0010011 */ + asm(".insn r 0x13, 0x1, 0x18, %0, %0, x0\n\t" + ".insn r 0x13, 0x1, 0x18, %1, %1, x0" + : "=r"(o8[0]), "=r"(o8[1]) : "0"(i8[0]), "1"(i8[1])); + return true; +} + +bool test_ISB_ISR_AK_IMC(uint8_t *o, const uint8_t *i, const uint8_t *k) +{ + return false; +} + +bool test_ISB_ISR_IMC_AK(uint8_t *o, const uint8_t *i, const uint8_t *k) +{ + uint64_t *o8 = (uint64_t *)o; + const uint64_t *i8 = (const uint64_t *)i; + const uint64_t *k8 = (const uint64_t *)k; + + /* aes64dsm rd, rs1, rs2 = 0011111 rs2 rs1 000 rd 0110011 */ + asm(".insn r 0x33, 0x0, 0x1f, %0, %2, %3\n\t" + ".insn r 0x33, 0x0, 0x1f, %1, %3, %2\n\t" + "xor %0,%0,%4\n\t" + "xor %1,%1,%5" + : "=&r"(o8[0]), "=&r"(o8[1]) + : "r"(i8[0]), "r"(i8[1]), "r"(k8[0]), "r"(k8[1])); + return true; +} |