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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

drivers/staging/skein/skein_block.c

+51 −15
Original line number Diff line number Diff line
@@ -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);