[PATCH v2 4/4] staging: skein: File Reorg

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Reorganizes file to remove #defines from middle of functions. Also
removes #if'd loop declarations and adds ternary if driven loops.

Signed-off-by: Eric Rost <eric.rost@xxxxxxxxxxxxx>
---
 drivers/staging/skein/skein_block.c |  568 ++++++++++++++++++-----------------
 1 file changed, 291 insertions(+), 277 deletions(-)

diff --git a/drivers/staging/skein/skein_block.c b/drivers/staging/skein/skein_block.c
index b8e4bd8..88bc718 100644
--- a/drivers/staging/skein/skein_block.c
+++ b/drivers/staging/skein/skein_block.c
@@ -122,8 +122,248 @@ do {                                                     \
 	SKEIN_256_ROUNDS_TOTAL / 8 > (NN)) || \
 	(SKEIN_UNROLL_256 > (NN)))
 
+#if  (SKEIN_UNROLL_256 > 14)
+#error  "need more unrolling in skein_256_process_block"
+#endif
+#endif
+
+#if !(SKEIN_USE_ASM & 512)
+#undef  RCNT
+#define RCNT  (SKEIN_512_ROUNDS_TOTAL/8)
+
+#ifdef SKEIN_LOOP /* configure how much to unroll the loop */
+#define SKEIN_UNROLL_512 (((SKEIN_LOOP)/10)%10)
+#else
+#define SKEIN_UNROLL_512 (0)
+#endif
+
+#if SKEIN_UNROLL_512
+#if (RCNT % SKEIN_UNROLL_512)
+#error "Invalid SKEIN_UNROLL_512" /* sanity check on unroll count */
+#endif
+#endif
+#define ROUND512(p0, p1, p2, p3, p4, p5, p6, p7, ROT, r_num) \
+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, r_num) /* unrolled */ \
+do {                                                                    \
+	ROUND512(p0, p1, p2, p3, p4, p5, p6, p7, ROT, r_num)            \
+	skein_show_r_ptr(BLK_BITS, &ctx->h, r_num, X_ptr);              \
+} while (0)
+
+#define I512(R)                                                           \
+do {                                                                      \
+	/* inject the key schedule value */                               \
+	X0   += ks[((R) + 1) % 9];                                        \
+	X1   += ks[((R) + 2) % 9];                                        \
+	X2   += ks[((R) + 3) % 9];                                        \
+	X3   += ks[((R) + 4) % 9];                                        \
+	X4   += ks[((R) + 5) % 9];                                        \
+	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, X_ptr); \
+} while (0)
+
+#else /* looping version */
+#define R512(p0, p1, p2, p3, p4, p5, p6, p7, ROT, r_num)                 \
+do {                                                                     \
+	ROUND512(p0, p1, p2, p3, p4, p5, p6, p7, ROT, r_num);            \
+	skein_show_r_ptr(BLK_BITS, &ctx->h, 4 * (r - 1) + r_num, X_ptr); \
+} while (0)
+
+#define I512(R)                                                           \
+do {                                                                      \
+	/* inject the key schedule value */                               \
+	X0   += ks[r + (R) + 0];                                          \
+	X1   += ks[r + (R) + 1];                                          \
+	X2   += ks[r + (R) + 2];                                          \
+	X3   += ks[r + (R) + 3];                                          \
+	X4   += ks[r + (R) + 4];                                          \
+	X5   += ks[r + (R) + 5] + ts[r + (R) + 0];                        \
+	X6   += ks[r + (R) + 6] + ts[r + (R) + 1];                        \
+	X7   += ks[r + (R) + 7] + r + (R);                                \
+	/* 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, X_ptr); \
+} while (0)
+#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);   \
+		R512(6, 1, 0, 7, 2, 5, 4, 3, R_512_3, 8 * (R) + 4);   \
+		I512(2 * (R));                              \
+		R512(0, 1, 2, 3, 4, 5, 6, 7, R_512_4, 8 * (R) + 5);   \
+		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 */     \
+} while (0)
+#define R512_UNROLL_R(NN)                             \
+		((SKEIN_UNROLL_512 == 0 &&            \
+		SKEIN_512_ROUNDS_TOTAL/8 > (NN)) ||   \
+		(SKEIN_UNROLL_512 > (NN)))
+
+#if  (SKEIN_UNROLL_512 > 14)
+#error  "need more unrolling in skein_512_process_block"
+#endif
+#endif
+
+#if !(SKEIN_USE_ASM & 1024)
+#undef  RCNT
+#define RCNT  (SKEIN_1024_ROUNDS_TOTAL/8)
+#ifdef SKEIN_LOOP /* configure how much to unroll the loop */
+#define SKEIN_UNROLL_1024 ((SKEIN_LOOP)%10)
+#else
+#define SKEIN_UNROLL_1024 (0)
+#endif
+
+#if (SKEIN_UNROLL_1024 != 0)
+#if (RCNT % SKEIN_UNROLL_1024)
+#error "Invalid SKEIN_UNROLL_1024" /* sanity check on unroll count */
+#endif
+#endif
+#define ROUND1024(p0, p1, p2, p3, p4, p5, p6, p7, p8, p9, pA, pB, pC, pD, pE, \
+		  pF, ROT, r_num)                                             \
+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;                                                       \
+	X##p8 += X##p9;                                                       \
+	X##p9 = rotl_64(X##p9, ROT##_4);                                      \
+	X##p9 ^= X##p8;                                                       \
+	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, X_ptr);                       \
+} while (0)
+
+#define I1024(R)                                                          \
+do {                                                                      \
+	/* inject the key schedule value */                               \
+	X00 += ks[((R) + 1) % 17];                                        \
+	X01 += ks[((R) + 2) % 17];                                        \
+	X02 += ks[((R) + 3) % 17];                                        \
+	X03 += ks[((R) + 4) % 17];                                        \
+	X04 += ks[((R) + 5) % 17];                                        \
+	X05 += ks[((R) + 6) % 17];                                        \
+	X06 += ks[((R) + 7) % 17];                                        \
+	X07 += ks[((R) + 8) % 17];                                        \
+	X08 += ks[((R) + 9) % 17];                                        \
+	X09 += ks[((R) + 10) % 17];                                       \
+	X10 += ks[((R) + 11) % 17];                                       \
+	X11 += ks[((R) + 12) % 17];                                       \
+	X12 += ks[((R) + 13) % 17];                                       \
+	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, X_ptr); \
+} 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, X_ptr);         \
+} while (0)
+
+#define I1024(R)                                                           \
+do {                                                                       \
+	/* inject the key schedule value */                                \
+	X00 += ks[r + (R) + 0];                                            \
+	X01 += ks[r + (R) + 1];                                            \
+	X02 += ks[r + (R) + 2];                                            \
+	X03 += ks[r + (R) + 3];                                            \
+	X04 += ks[r + (R) + 4];                                            \
+	X05 += ks[r + (R) + 5];                                            \
+	X06 += ks[r + (R) + 6];                                            \
+	X07 += ks[r + (R) + 7];                                            \
+	X08 += ks[r + (R) + 8];                                            \
+	X09 += ks[r + (R) + 9];                                            \
+	X10 += ks[r + (R) + 10];                                           \
+	X11 += ks[r + (R) + 11];                                           \
+	X12 += ks[r + (R) + 12];                                           \
+	X13 += ks[r + (R) + 13] + ts[r + (R) + 0];                         \
+	X14 += ks[r + (R) + 14] + ts[r + (R) + 1];                         \
+	X15 += ks[r + (R) + 15] + r + (R);                                 \
+	/* 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, X_ptr); \
+} while (0)
+
 #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, \
+	      R1024_1, 8*(R) + 2);                                            \
+	R1024(00, 07, 02, 05, 04, 03, 06, 01, 12, 15, 14, 13, 08, 11, 10, 09, \
+	      R1024_2, 8*(R) + 3);                                            \
+	R1024(00, 15, 02, 11, 06, 13, 04, 09, 14, 01, 08, 05, 10, 03, 12, 07, \
+	      R1024_3, 8*(R) + 4);                                            \
+	I1024(2*(R));                                                         \
+	R1024(00, 01, 02, 03, 04, 05, 06, 07, 08, 09, 10, 11, 12, 13, 14, 15, \
+	      R1024_4, 8*(R) + 5);                                            \
+	R1024(00, 09, 02, 13, 06, 11, 04, 15, 10, 07, 12, 03, 14, 05, 08, 01, \
+	      R1024_5, 8*(R) + 6);                                            \
+	R1024(00, 07, 02, 05, 04, 03, 06, 01, 12, 15, 14, 13, 08, 11, 10, 09, \
+	      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);                                                       \
+} while (0)
 
+#define R1024_UNROLL_R(NN)                              \
+		((SKEIN_UNROLL_1024 == 0 &&             \
+		SKEIN_1024_ROUNDS_TOTAL/8 > (NN)) ||  \
+		(SKEIN_UNROLL_1024 > (NN)))
+
+#if  (SKEIN_UNROLL_1024 > 14)
+#error  "need more unrolling in Skein_1024_Process_Block"
+#endif
+#endif
 
 /*****************************  SKEIN_256 ******************************/
 #if !(SKEIN_USE_ASM & 256)
@@ -133,19 +373,23 @@ void skein_256_process_block(struct skein_256_ctx *ctx, const u8 *blk_ptr,
 	enum {
 		WCNT = SKEIN_256_STATE_WORDS
 	};
-
+	size_t r;
 #if SKEIN_UNROLL_256
-	size_t  r;
-	u64  kw[WCNT+4+RCNT*2]; /* key schedule: chaining vars + tweak + "rot"*/
+	/* key schedule: chaining vars + tweak + "rot"*/
+	u64  kw[WCNT+4+RCNT*2];
 #else
-	u64  kw[WCNT+4]; /* key schedule words : chaining vars + tweak */
+	/* key schedule words : chaining vars + tweak */
+	u64  kw[WCNT+4];
 #endif
 	u64  X0, X1, X2, X3; /* local copy of context vars, for speed */
 	u64  w[WCNT]; /* local copy of input block */
 #ifdef SKEIN_DEBUG
 	const u64 *X_ptr[4]; /* use for debugging (help cc put Xn in regs) */
 
-	X_ptr[0] = &X0;  X_ptr[1] = &X1;  X_ptr[2] = &X2;  X_ptr[3] = &X3;
+	X_ptr[0] = &X0;
+	X_ptr[1] = &X1;
+	X_ptr[2] = &X2;
+	X_ptr[3] = &X3;
 #endif
 	skein_assert(blk_cnt != 0); /* never call with blk_cnt == 0! */
 	ts[0] = ctx->h.tweak[0];
@@ -184,58 +428,51 @@ void skein_256_process_block(struct skein_256_ctx *ctx, const u8 *blk_ptr,
 		blk_ptr += SKEIN_256_BLOCK_BYTES;
 
 		/* run the rounds */
-#if SKEIN_UNROLL_256
-
-	for (r = 1; r < 2 * RCNT; r += 2 * SKEIN_UNROLL_256)
-#endif
-		{
-
-		R256_8_ROUNDS(0);
-
+		for (r = 1;
+			r < (SKEIN_UNROLL_256 ? 2 * RCNT : 2);
+			r += (SKEIN_UNROLL_256 ? 2 * SKEIN_UNROLL_256 : 1)) {
+			R256_8_ROUNDS(0);
 #if   R256_UNROLL_R(1)
-		R256_8_ROUNDS(1);
+			R256_8_ROUNDS(1);
 #endif
 #if   R256_UNROLL_R(2)
-		R256_8_ROUNDS(2);
+			R256_8_ROUNDS(2);
 #endif
 #if   R256_UNROLL_R(3)
-		R256_8_ROUNDS(3);
+			R256_8_ROUNDS(3);
 #endif
 #if   R256_UNROLL_R(4)
-		R256_8_ROUNDS(4);
+			R256_8_ROUNDS(4);
 #endif
 #if   R256_UNROLL_R(5)
-		R256_8_ROUNDS(5);
+			R256_8_ROUNDS(5);
 #endif
 #if   R256_UNROLL_R(6)
-		R256_8_ROUNDS(6);
+			R256_8_ROUNDS(6);
 #endif
 #if   R256_UNROLL_R(7)
-		R256_8_ROUNDS(7);
+			R256_8_ROUNDS(7);
 #endif
 #if   R256_UNROLL_R(8)
-		R256_8_ROUNDS(8);
+			R256_8_ROUNDS(8);
 #endif
 #if   R256_UNROLL_R(9)
-		R256_8_ROUNDS(9);
+			R256_8_ROUNDS(9);
 #endif
 #if   R256_UNROLL_R(10)
-		R256_8_ROUNDS(10);
+			R256_8_ROUNDS(10);
 #endif
 #if   R256_UNROLL_R(11)
-		R256_8_ROUNDS(11);
+			R256_8_ROUNDS(11);
 #endif
 #if   R256_UNROLL_R(12)
-		R256_8_ROUNDS(12);
+			R256_8_ROUNDS(12);
 #endif
 #if   R256_UNROLL_R(13)
-		R256_8_ROUNDS(13);
+			R256_8_ROUNDS(13);
 #endif
 #if   R256_UNROLL_R(14)
-		R256_8_ROUNDS(14);
-#endif
-#if  (SKEIN_UNROLL_256 > 14)
-#error  "need more unrolling in skein_256_process_block"
+			R256_8_ROUNDS(14);
 #endif
 		}
 		/* do the final "feedforward" xor, update context chaining */
@@ -273,20 +510,8 @@ void skein_512_process_block(struct skein_512_ctx *ctx, const u8 *blk_ptr,
 	enum {
 		WCNT = SKEIN_512_STATE_WORDS
 	};
-#undef  RCNT
-#define RCNT  (SKEIN_512_ROUNDS_TOTAL/8)
-
-#ifdef SKEIN_LOOP /* configure how much to unroll the loop */
-#define SKEIN_UNROLL_512 (((SKEIN_LOOP)/10)%10)
-#else
-#define SKEIN_UNROLL_512 (0)
-#endif
-
-#if SKEIN_UNROLL_512
-#if (RCNT % SKEIN_UNROLL_512)
-#error "Invalid SKEIN_UNROLL_512" /* sanity check on unroll count */
-#endif
 	size_t  r;
+#if SKEIN_UNROLL_512
 	u64  kw[WCNT+4+RCNT*2]; /* key sched: chaining vars + tweak + "rot"*/
 #else
 	u64  kw[WCNT+4]; /* key schedule words : chaining vars + tweak */
@@ -296,8 +521,14 @@ void skein_512_process_block(struct skein_512_ctx *ctx, const u8 *blk_ptr,
 #ifdef SKEIN_DEBUG
 	const u64 *X_ptr[8]; /* use for debugging (help cc put Xn in regs) */
 
-	X_ptr[0] = &X0;  X_ptr[1] = &X1;  X_ptr[2] = &X2;  X_ptr[3] = &X3;
-	X_ptr[4] = &X4;  X_ptr[5] = &X5;  X_ptr[6] = &X6;  X_ptr[7] = &X7;
+	X_ptr[0] = &X0;
+	X_ptr[1] = &X1;
+	X_ptr[2] = &X2;
+	X_ptr[3] = &X3;
+	X_ptr[4] = &X4;
+	X_ptr[5] = &X5;
+	X_ptr[6] = &X6;
+	X_ptr[7] = &X7;
 #endif
 
 	skein_assert(blk_cnt != 0); /* never call with blk_cnt == 0! */
@@ -330,104 +561,26 @@ void skein_512_process_block(struct skein_512_ctx *ctx, const u8 *blk_ptr,
 		skein_show_block(BLK_BITS, &ctx->h, ctx->x, blk_ptr, w, ks, ts);
 
 		/* do the first full key injection */
-		X0   = w[0] + ks[0];
-		X1   = w[1] + ks[1];
-		X2   = w[2] + ks[2];
-		X3   = w[3] + ks[3];
-		X4   = w[4] + ks[4];
-		X5   = w[5] + ks[5] + ts[0];
-		X6   = w[6] + ks[6] + ts[1];
-		X7   = w[7] + ks[7];
+		X0 = w[0] + ks[0];
+		X1 = w[1] + ks[1];
+		X2 = w[2] + ks[2];
+		X3 = w[3] + ks[3];
+		X4 = w[4] + ks[4];
+		X5 = w[5] + ks[5] + ts[0];
+		X6 = w[6] + ks[6] + ts[1];
+		X7 = w[7] + ks[7];
 
 		blk_ptr += SKEIN_512_BLOCK_BYTES;
 
 		skein_show_r_ptr(BLK_BITS, &ctx->h, SKEIN_RND_KEY_INITIAL,
 				 X_ptr);
 		/* run the rounds */
-#define ROUND512(p0, p1, p2, p3, p4, p5, p6, p7, ROT, r_num) \
-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, r_num) /* unrolled */ \
-do {                                                                    \
-	ROUND512(p0, p1, p2, p3, p4, p5, p6, p7, ROT, r_num)            \
-	skein_show_r_ptr(BLK_BITS, &ctx->h, r_num, X_ptr);              \
-} while (0)
-
-#define I512(R)                                                           \
-do {                                                                      \
-	/* inject the key schedule value */                               \
-	X0   += ks[((R) + 1) % 9];                                        \
-	X1   += ks[((R) + 2) % 9];                                        \
-	X2   += ks[((R) + 3) % 9];                                        \
-	X3   += ks[((R) + 4) % 9];                                        \
-	X4   += ks[((R) + 5) % 9];                                        \
-	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, X_ptr); \
-} while (0)
-
-#else /* looping version */
-#define R512(p0, p1, p2, p3, p4, p5, p6, p7, ROT, r_num)                 \
-do {                                                                     \
-	ROUND512(p0, p1, p2, p3, p4, p5, p6, p7, ROT, r_num);            \
-	skein_show_r_ptr(BLK_BITS, &ctx->h, 4 * (r - 1) + r_num, X_ptr); \
-} while (0)
-
-#define I512(R)                                                           \
-do {                                                                      \
-	/* inject the key schedule value */                               \
-	X0   += ks[r + (R) + 0];                                          \
-	X1   += ks[r + (R) + 1];                                          \
-	X2   += ks[r + (R) + 2];                                          \
-	X3   += ks[r + (R) + 3];                                          \
-	X4   += ks[r + (R) + 4];                                          \
-	X5   += ks[r + (R) + 5] + ts[r + (R) + 0];                        \
-	X6   += ks[r + (R) + 6] + ts[r + (R) + 1];                        \
-	X7   += ks[r + (R) + 7] + r + (R);                                \
-	/* 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, X_ptr); \
-} 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);   \
-		R512(6, 1, 0, 7, 2, 5, 4, 3, R_512_3, 8 * (R) + 4);   \
-		I512(2 * (R));                              \
-		R512(0, 1, 2, 3, 4, 5, 6, 7, R_512_4, 8 * (R) + 5);   \
-		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 */     \
-} while (0)
+		for (r = 1;
+			r < (SKEIN_UNROLL_512 ? 2 * RCNT : 2);
+			r += (SKEIN_UNROLL_512 ? 2 * SKEIN_UNROLL_512 : 1)) {
 
 			R512_8_ROUNDS(0);
 
-#define R512_UNROLL_R(NN)                             \
-		((SKEIN_UNROLL_512 == 0 &&            \
-		SKEIN_512_ROUNDS_TOTAL/8 > (NN)) ||   \
-		(SKEIN_UNROLL_512 > (NN)))
-
 #if   R512_UNROLL_R(1)
 			R512_8_ROUNDS(1);
 #endif
@@ -470,9 +623,6 @@ do {                                                                  \
 #if   R512_UNROLL_R(14)
 			R512_8_ROUNDS(14);
 #endif
-#if  (SKEIN_UNROLL_512 > 14)
-#error  "need more unrolling in skein_512_process_block"
-#endif
 		}
 
 		/* do the final "feedforward" xor, update context chaining */
@@ -513,20 +663,8 @@ void skein_1024_process_block(struct skein_1024_ctx *ctx, const u8 *blk_ptr,
 	enum {
 		WCNT = SKEIN_1024_STATE_WORDS
 	};
-#undef  RCNT
-#define RCNT  (SKEIN_1024_ROUNDS_TOTAL/8)
-
-#ifdef SKEIN_LOOP /* configure how much to unroll the loop */
-#define SKEIN_UNROLL_1024 ((SKEIN_LOOP)%10)
-#else
-#define SKEIN_UNROLL_1024 (0)
-#endif
-
-#if (SKEIN_UNROLL_1024 != 0)
-#if (RCNT % SKEIN_UNROLL_1024)
-#error "Invalid SKEIN_UNROLL_1024" /* sanity check on unroll count */
-#endif
 	size_t  r;
+#if (SKEIN_UNROLL_1024 != 0)
 	u64  kw[WCNT+4+RCNT*2]; /* key sched: chaining vars + tweak + "rot" */
 #else
 	u64  kw[WCNT+4]; /* key schedule words : chaining vars + tweak */
@@ -617,131 +755,10 @@ void skein_1024_process_block(struct skein_1024_ctx *ctx, const u8 *blk_ptr,
 		skein_show_r_ptr(BLK_BITS, &ctx->h, SKEIN_RND_KEY_INITIAL,
 				 X_ptr);
 
-#define ROUND1024(p0, p1, p2, p3, p4, p5, p6, p7, p8, p9, pA, pB, pC, pD, pE, \
-		  pF, ROT, r_num)                                             \
-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;                                                       \
-	X##p8 += X##p9;                                                       \
-	X##p9 = rotl_64(X##p9, ROT##_4);                                      \
-	X##p9 ^= X##p8;                                                       \
-	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, X_ptr);                       \
-} while (0)
-
-#define I1024(R)                                                          \
-do {                                                                      \
-	/* inject the key schedule value */                               \
-	X00 += ks[((R) + 1) % 17];                                        \
-	X01 += ks[((R) + 2) % 17];                                        \
-	X02 += ks[((R) + 3) % 17];                                        \
-	X03 += ks[((R) + 4) % 17];                                        \
-	X04 += ks[((R) + 5) % 17];                                        \
-	X05 += ks[((R) + 6) % 17];                                        \
-	X06 += ks[((R) + 7) % 17];                                        \
-	X07 += ks[((R) + 8) % 17];                                        \
-	X08 += ks[((R) + 9) % 17];                                        \
-	X09 += ks[((R) + 10) % 17];                                       \
-	X10 += ks[((R) + 11) % 17];                                       \
-	X11 += ks[((R) + 12) % 17];                                       \
-	X12 += ks[((R) + 13) % 17];                                       \
-	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, X_ptr); \
-} 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, X_ptr);         \
-} while (0)
-
-#define I1024(R)                                                           \
-do {                                                                       \
-	/* inject the key schedule value */                                \
-	X00 += ks[r + (R) + 0];                                            \
-	X01 += ks[r + (R) + 1];                                            \
-	X02 += ks[r + (R) + 2];                                            \
-	X03 += ks[r + (R) + 3];                                            \
-	X04 += ks[r + (R) + 4];                                            \
-	X05 += ks[r + (R) + 5];                                            \
-	X06 += ks[r + (R) + 6];                                            \
-	X07 += ks[r + (R) + 7];                                            \
-	X08 += ks[r + (R) + 8];                                            \
-	X09 += ks[r + (R) + 9];                                            \
-	X10 += ks[r + (R) + 10];                                           \
-	X11 += ks[r + (R) + 11];                                           \
-	X12 += ks[r + (R) + 12];                                           \
-	X13 += ks[r + (R) + 13] + ts[r + (R) + 0];                         \
-	X14 += ks[r + (R) + 14] + ts[r + (R) + 1];                         \
-	X15 += ks[r + (R) + 15] + r + (R);                                 \
-	/* 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, X_ptr); \
-} 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, \
-	      R1024_1, 8*(R) + 2);                                            \
-	R1024(00, 07, 02, 05, 04, 03, 06, 01, 12, 15, 14, 13, 08, 11, 10, 09, \
-	      R1024_2, 8*(R) + 3);                                            \
-	R1024(00, 15, 02, 11, 06, 13, 04, 09, 14, 01, 08, 05, 10, 03, 12, 07, \
-	      R1024_3, 8*(R) + 4);                                            \
-	I1024(2*(R));                                                         \
-	R1024(00, 01, 02, 03, 04, 05, 06, 07, 08, 09, 10, 11, 12, 13, 14, 15, \
-	      R1024_4, 8*(R) + 5);                                            \
-	R1024(00, 09, 02, 13, 06, 11, 04, 15, 10, 07, 12, 03, 14, 05, 08, 01, \
-	      R1024_5, 8*(R) + 6);                                            \
-	R1024(00, 07, 02, 05, 04, 03, 06, 01, 12, 15, 14, 13, 08, 11, 10, 09, \
-	      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);                                                       \
-} while (0)
-
+		for (r = 1;
+			r < (SKEIN_UNROLL_1024 ? 2 * RCNT : 2);
+			r += (SKEIN_UNROLL_1024 ? 2 * SKEIN_UNROLL_1024 : 1)) {
 			R1024_8_ROUNDS(0);
-
-#define R1024_UNROLL_R(NN)                              \
-		((SKEIN_UNROLL_1024 == 0 &&             \
-		SKEIN_1024_ROUNDS_TOTAL/8 > (NN)) ||  \
-		(SKEIN_UNROLL_1024 > (NN)))
-
 #if   R1024_UNROLL_R(1)
 			R1024_8_ROUNDS(1);
 #endif
@@ -784,9 +801,6 @@ do {                                                                          \
 #if   R1024_UNROLL_R(14)
 			R1024_8_ROUNDS(14);
 #endif
-#if  (SKEIN_UNROLL_1024 > 14)
-#error  "need more unrolling in Skein_1024_Process_Block"
- #endif
 		}
 		/* do the final "feedforward" xor, update context chaining */
 
-- 
1.7.10.4

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