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Commit 522e358d authored by Jason Cooper's avatar Jason Cooper Committed by Greg Kroah-Hartman
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staging: crypto: skein: wrap multi-line macros in do-while loops 

Signed-off-by: default avatarJason Cooper <jason@lakedaemon.net>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 161a2afd
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Showing with 51 additions and 15 deletions
drivers/staging/skein/skein_block.c
View file @ 522e358d
......@@ -107,27 +107,36 @@ void Skein_256_Process_Block(struct skein_256_ctx *ctx, const u8 *blkPtr,
/* run the rounds */
#define Round256(p0, p1, p2, p3, ROT, rNum) \
do { \
X##p0 += X##p1; X##p1 = RotL_64(X##p1, ROT##_0); X##p1 ^= X##p0; \
X##p2 += X##p3; X##p3 = RotL_64(X##p3, ROT##_1); X##p3 ^= X##p2; \
} while (0)
#if SKEIN_UNROLL_256 == 0
#define R256(p0, p1, p2, p3, ROT, rNum) /* fully unrolled */ \
do { \
Round256(p0, p1, p2, p3, ROT, rNum) \
Skein_Show_R_Ptr(BLK_BITS, &ctx->h, rNum, Xptr);
Skein_Show_R_Ptr(BLK_BITS, &ctx->h, rNum, Xptr); \
} while (0)
#define I256(R) \
do { \
/* inject the key schedule value */ \
X0 += ks[((R)+1) % 5]; \
X1 += ks[((R)+2) % 5] + ts[((R)+1) % 3]; \
X2 += ks[((R)+3) % 5] + ts[((R)+2) % 3]; \
X3 += ks[((R)+4) % 5] + (R)+1; \
Skein_Show_R_Ptr(BLK_BITS, &ctx->h, SKEIN_RND_KEY_INJECT, Xptr);
Skein_Show_R_Ptr(BLK_BITS, &ctx->h, SKEIN_RND_KEY_INJECT, Xptr); \
} while (0)
#else /* looping version */
#define R256(p0, p1, p2, p3, ROT, rNum) \
do { \
Round256(p0, p1, p2, p3, ROT, rNum) \
Skein_Show_R_Ptr(BLK_BITS, &ctx->h, 4 * (r - 1) + rNum, Xptr);
Skein_Show_R_Ptr(BLK_BITS, &ctx->h, 4 * (r - 1) + rNum, Xptr); \
} while (0)
#define I256(R) \
do { \
/* inject the key schedule value */ \
X0 += ks[r+(R)+0]; \
X1 += ks[r+(R)+1] + ts[r+(R)+0]; \
......@@ -136,12 +145,14 @@ void Skein_256_Process_Block(struct skein_256_ctx *ctx, const u8 *blkPtr,
/* rotate key schedule */ \
ks[r + (R) + 4] = ks[r + (R) - 1]; \
ts[r + (R) + 2] = ts[r + (R) - 1]; \
Skein_Show_R_Ptr(BLK_BITS, &ctx->h, SKEIN_RND_KEY_INJECT, Xptr);
Skein_Show_R_Ptr(BLK_BITS, &ctx->h, SKEIN_RND_KEY_INJECT, Xptr); \
} while (0)
for (r = 1; r < 2 * RCNT; r += 2 * SKEIN_UNROLL_256)
#endif
{
#define R256_8_rounds(R) \
do { \
R256(0, 1, 2, 3, R_256_0, 8 * (R) + 1); \
R256(0, 3, 2, 1, R_256_1, 8 * (R) + 2); \
R256(0, 1, 2, 3, R_256_2, 8 * (R) + 3); \
......@@ -151,7 +162,8 @@ void Skein_256_Process_Block(struct skein_256_ctx *ctx, const u8 *blkPtr,
R256(0, 3, 2, 1, R_256_5, 8 * (R) + 6); \
R256(0, 1, 2, 3, R_256_6, 8 * (R) + 7); \
R256(0, 3, 2, 1, R_256_7, 8 * (R) + 8); \
I256(2 * (R) + 1);
I256(2 * (R) + 1); \
} while (0)
R256_8_rounds(0);
......@@ -311,17 +323,22 @@ void Skein_512_Process_Block(struct skein_512_ctx *ctx, const u8 *blkPtr,
Xptr);
/* run the rounds */
#define Round512(p0, p1, p2, p3, p4, p5, p6, p7, ROT, rNum) \
do { \
X##p0 += X##p1; X##p1 = RotL_64(X##p1, ROT##_0); X##p1 ^= X##p0; \
X##p2 += X##p3; X##p3 = RotL_64(X##p3, ROT##_1); X##p3 ^= X##p2; \
X##p4 += X##p5; X##p5 = RotL_64(X##p5, ROT##_2); X##p5 ^= X##p4; \
X##p6 += X##p7; X##p7 = RotL_64(X##p7, ROT##_3); X##p7 ^= X##p6; \
} while (0)
#if SKEIN_UNROLL_512 == 0
#define R512(p0, p1, p2, p3, p4, p5, p6, p7, ROT, rNum) /* unrolled */ \
do { \
Round512(p0, p1, p2, p3, p4, p5, p6, p7, ROT, rNum) \
Skein_Show_R_Ptr(BLK_BITS, &ctx->h, rNum, Xptr);
Skein_Show_R_Ptr(BLK_BITS, &ctx->h, rNum, Xptr); \
} while (0)
#define I512(R) \
do { \
/* inject the key schedule value */ \
X0 += ks[((R) + 1) % 9]; \
X1 += ks[((R) + 2) % 9]; \
......@@ -331,13 +348,17 @@ void Skein_512_Process_Block(struct skein_512_ctx *ctx, const u8 *blkPtr,
X5 += ks[((R) + 6) % 9] + ts[((R) + 1) % 3]; \
X6 += ks[((R) + 7) % 9] + ts[((R) + 2) % 3]; \
X7 += ks[((R) + 8) % 9] + (R) + 1; \
Skein_Show_R_Ptr(BLK_BITS, &ctx->h, SKEIN_RND_KEY_INJECT, Xptr);
Skein_Show_R_Ptr(BLK_BITS, &ctx->h, SKEIN_RND_KEY_INJECT, Xptr); \
} while (0)
#else /* looping version */
#define R512(p0, p1, p2, p3, p4, p5, p6, p7, ROT, rNum) \
do { \
Round512(p0, p1, p2, p3, p4, p5, p6, p7, ROT, rNum) \
Skein_Show_R_Ptr(BLK_BITS, &ctx->h, 4 * (r - 1) + rNum, Xptr);
Skein_Show_R_Ptr(BLK_BITS, &ctx->h, 4 * (r - 1) + rNum, Xptr); \
} while (0)
#define I512(R) \
do { \
/* inject the key schedule value */ \
X0 += ks[r + (R) + 0]; \
X1 += ks[r + (R) + 1]; \
......@@ -350,12 +371,14 @@ void Skein_512_Process_Block(struct skein_512_ctx *ctx, const u8 *blkPtr,
/* rotate key schedule */ \
ks[r + (R) + 8] = ks[r + (R) - 1]; \
ts[r + (R) + 2] = ts[r + (R) - 1]; \
Skein_Show_R_Ptr(BLK_BITS, &ctx->h, SKEIN_RND_KEY_INJECT, Xptr);
Skein_Show_R_Ptr(BLK_BITS, &ctx->h, SKEIN_RND_KEY_INJECT, Xptr); \
} while (0)
for (r = 1; r < 2 * RCNT; r += 2 * SKEIN_UNROLL_512)
#endif /* end of looped code definitions */
{
#define R512_8_rounds(R) /* do 8 full rounds */ \
do { \
R512(0, 1, 2, 3, 4, 5, 6, 7, R_512_0, 8 * (R) + 1); \
R512(2, 1, 4, 7, 6, 5, 0, 3, R_512_1, 8 * (R) + 2); \
R512(4, 1, 6, 3, 0, 5, 2, 7, R_512_2, 8 * (R) + 3); \
......@@ -365,7 +388,8 @@ void Skein_512_Process_Block(struct skein_512_ctx *ctx, const u8 *blkPtr,
R512(2, 1, 4, 7, 6, 5, 0, 3, R_512_5, 8 * (R) + 6); \
R512(4, 1, 6, 3, 0, 5, 2, 7, R_512_6, 8 * (R) + 7); \
R512(6, 1, 0, 7, 2, 5, 4, 3, R_512_7, 8 * (R) + 8); \
I512(2 * (R) + 1); /* and key injection */
I512(2 * (R) + 1); /* and key injection */ \
} while (0)
R512_8_rounds(0);
......@@ -551,6 +575,7 @@ void Skein1024_Process_Block(struct skein1024_ctx *ctx, const u8 *blkPtr, \
#define Round1024(p0, p1, p2, p3, p4, p5, p6, p7, p8, p9, pA, pB, pC, pD, pE, \
pF, ROT, rNum) \
do { \
X##p0 += X##p1; X##p1 = RotL_64(X##p1, ROT##_0); X##p1 ^= X##p0; \
X##p2 += X##p3; X##p3 = RotL_64(X##p3, ROT##_1); X##p3 ^= X##p2; \
X##p4 += X##p5; X##p5 = RotL_64(X##p5, ROT##_2); X##p5 ^= X##p4; \
......@@ -559,15 +584,19 @@ void Skein1024_Process_Block(struct skein1024_ctx *ctx, const u8 *blkPtr, \
X##pA += X##pB; X##pB = RotL_64(X##pB, ROT##_5); X##pB ^= X##pA; \
X##pC += X##pD; X##pD = RotL_64(X##pD, ROT##_6); X##pD ^= X##pC; \
X##pE += X##pF; X##pF = RotL_64(X##pF, ROT##_7); X##pF ^= X##pE; \
} while (0)
#if SKEIN_UNROLL_1024 == 0
#define R1024(p0, p1, p2, p3, p4, p5, p6, p7, p8, p9, pA, pB, pC, pD, pE, pF, \
ROT, rn) \
do { \
Round1024(p0, p1, p2, p3, p4, p5, p6, p7, p8, p9, pA, pB, pC, pD, pE, \
pF, ROT, rn) \
Skein_Show_R_Ptr(BLK_BITS, &ctx->h, rn, Xptr);
Skein_Show_R_Ptr(BLK_BITS, &ctx->h, rn, Xptr); \
} while (0)
#define I1024(R) \
do { \
/* inject the key schedule value */ \
X00 += ks[((R) + 1) % 17]; \
X01 += ks[((R) + 2) % 17]; \
......@@ -585,15 +614,19 @@ void Skein1024_Process_Block(struct skein1024_ctx *ctx, const u8 *blkPtr, \
X13 += ks[((R) + 14) % 17] + ts[((R) + 1) % 3]; \
X14 += ks[((R) + 15) % 17] + ts[((R) + 2) % 3]; \
X15 += ks[((R) + 16) % 17] + (R) + 1; \
Skein_Show_R_Ptr(BLK_BITS, &ctx->h, SKEIN_RND_KEY_INJECT, Xptr);
Skein_Show_R_Ptr(BLK_BITS, &ctx->h, SKEIN_RND_KEY_INJECT, Xptr); \
} while (0)
#else /* looping version */
#define R1024(p0, p1, p2, p3, p4, p5, p6, p7, p8, p9, pA, pB, pC, pD, pE, pF, \
ROT, rn) \
do { \
Round1024(p0, p1, p2, p3, p4, p5, p6, p7, p8, p9, pA, pB, pC, pD, pE, \
pF, ROT, rn) \
Skein_Show_R_Ptr(BLK_BITS, &ctx->h, 4 * (r - 1) + rn, Xptr);
Skein_Show_R_Ptr(BLK_BITS, &ctx->h, 4 * (r - 1) + rn, Xptr); \
} while (0)
#define I1024(R) \
do { \
/* inject the key schedule value */ \
X00 += ks[r + (R) + 0]; \
X01 += ks[r + (R) + 1]; \
......@@ -614,12 +647,14 @@ void Skein1024_Process_Block(struct skein1024_ctx *ctx, const u8 *blkPtr, \
/* rotate key schedule */ \
ks[r + (R) + 16] = ks[r + (R) - 1]; \
ts[r + (R) + 2] = ts[r + (R) - 1]; \
Skein_Show_R_Ptr(BLK_BITSi, &ctx->h, SKEIN_RND_KEY_INJECT, Xptr);
Skein_Show_R_Ptr(BLK_BITSi, &ctx->h, SKEIN_RND_KEY_INJECT, Xptr); \
} while (0)
for (r = 1; r <= 2 * RCNT; r += 2 * SKEIN_UNROLL_1024)
#endif
{
#define R1024_8_rounds(R) \
do { \
R1024(00, 01, 02, 03, 04, 05, 06, 07, 08, 09, 10, 11, 12, 13, 14, 15, \
R1024_0, 8*(R) + 1); \
R1024(00, 09, 02, 13, 06, 11, 04, 15, 10, 07, 12, 03, 14, 05, 08, 01, \
......@@ -637,7 +672,8 @@ void Skein1024_Process_Block(struct skein1024_ctx *ctx, const u8 *blkPtr, \
R1024_6, 8*(R) + 7); \
R1024(00, 15, 02, 11, 06, 13, 04, 09, 14, 01, 08, 05, 10, 03, 12, 07, \
R1024_7, 8*(R) + 8); \
I1024(2*(R)+1);
I1024(2*(R)+1); \
} while (0)
R1024_8_rounds(0);
......
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