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#include <stdio.h>
#include <setjmp.h>
#include "libfastmint.h"
#if (defined(__i386__) || defined(__AMD64__)) && defined(__GNUC__) && defined(__MMX__)
typedef int mmx_d_t __attribute__ ((vector_size (8)));
typedef int mmx_q_t __attribute__ ((vector_size (8)));
#endif
int minter_mmx_standard_1_test(void)
{
/* This minter runs only on x86 and AMD64 hardware supporting MMX - and will only compile on GCC */
#if (defined(__i386__) || defined(__AMD64__)) && defined(__GNUC__) && defined(__MMX__)
return (gProcessorSupportFlags & HC_CPU_SUPPORTS_MMX) != 0;
#endif
/* Not an x86 or AMD64, or compiler doesn't support MMX or GNU assembly */
return 0;
}
/* Define low-level primitives in terms of operations */
/* #define S(n, X) ( ( (X) << (n) ) | ( (X) >> ( 32 - (n) ) ) ) */
#define XOR(a,b) ( (mmx_d_t) __builtin_ia32_pxor( (mmx_q_t) a, (mmx_q_t) b) )
#define AND(a,b) ( (mmx_d_t) __builtin_ia32_pand( (mmx_q_t) a, (mmx_q_t) b) )
#define ANDNOT(a,b) ( (mmx_d_t) __builtin_ia32_pandn( (mmx_q_t) b, (mmx_q_t) a) )
#define OR(a,b) ( (mmx_d_t) __builtin_ia32_por( (mmx_q_t) a, (mmx_q_t) b) )
#define ADD(a,b) ( __builtin_ia32_paddd(a,b) )
#if (defined(__i386__) || defined(__AMD64__)) && defined(__GNUC__) && defined(__MMX__)
static inline mmx_d_t S(int n, mmx_d_t X)
{
mmx_d_t G = {} ;
asm ("movq %[x],%[g]\n\t"
"pslld %[sl],%[x]\n\t"
"psrld %[sr],%[g]\n\t"
"por %[g],%[x]"
: [g] "=y" (G), [x] "=y" (X)
: "[x]" (X), [sl] "g" (n), [sr] "g" (32-n)
);
return X;
}
#endif
/* #define F1( B, C, D ) ( ( (B) & (C) ) | ( ~(B) & (D) ) ) */
/* #define F1( B, C, D ) ( (D) ^ ( (B) & ( (C) ^ (D) ) ) ) */
#define F1( B, C, D ) ( \
F = AND(B,C), \
G = ANDNOT(D,B), \
OR(F,G) )
/* #define F2( B, C, D ) ( (B) ^ (C) ^ (D) ) */
#define F2( B, C, D ) ( \
F = XOR(B,C), \
XOR(F,D) )
/* #define F3( B, C, D ) ( (B) & (C) ) | ( (C) & (D) ) | ( (B) & (D) ) */
/* #define F3( B, C, D ) ( ( (B) & ( (C) | (D) )) | ( (C) & (D) ) ) */
#define F3( B, C, D ) ( \
F = OR(C,D), \
G = AND(C,D), \
F = AND(B,F), \
OR(F,G) )
/* #define F4( B, C, D ) ( (B) ^ (C) ^ (D) ) */
#define F4(B,C,D) F2(B,C,D)
#define K1 0x5A827999 /* constant used for rounds 0..19 */
#define K2 0x6ED9EBA1 /* constant used for rounds 20..39 */
#define K3 0x8F1BBCDC /* constant used for rounds 40..59 */
#define K4 0xCA62C1D6 /* constant used for rounds 60..79 */
/* #define Wf(t) (W[t] = S(1, W[t-16] ^ W[t-14] ^ W[t-8] ^ W[t-3])) */
#define Wf(W,t) ( \
F = XOR((W)[t-16], (W)[t-14]), \
G = XOR((W)[t-8], (W)[t-3]), \
F = XOR(F,G), \
(W)[t] = S(1,F) )
#define Wfly(W,t) ( (t) < 16 ? (W)[t] : Wf(W,t) )
/*
#define ROUND(t,A,B,C,D,E,Func,K,W) \
E = ADD(E,K); \
F = S(5,A); \
E = ADD(F,E); \
F = Wfly(W,t); \
E = ADD(F,E); \
F = Func(B,C,D); \
E = ADD(F,E); \
B = S(30,B);
*/
#define ROUND_F1_n(t,A,B,C,D,E,K,W) \
asm ( \
"\n\t movq %[d], %%mm5" /* begin F1(B,C,D) */ \
"\n\t pxor %[c], %%mm5" \
"\n\t movq %[a], %%mm7" /* begin S(5,A) */ \
"\n\t pand %[b], %%mm5" \
"\n\t pslld $5, %%mm7" \
"\n\t pxor %[d], %%mm5" \
"\n\t movq %[a], %%mm6" \
"\n\t paddd %%mm5,%[e]" /* sum F1(B,C,D) to E */ \
"\n\t psrld $27, %%mm6" \
"\n\t paddd %[k], %[e]" /* sum K to E */ \
"\n\t por %%mm6,%%mm7" \
"\n\t movq %[b], %%mm5" /* begin S(30,B) */ \
"\n\t paddd %%mm7,%[e]" /* sum S(5,A) to E */ \
"\n\t pslld $30, %[b]" \
"\n\t psrld $2, %%mm5" \
"\n\t paddd %[Wt],%[e]" /* sum W[t] to E */ \
"\n\t por %%mm5,%[b]" /* complete S(30,B) */ \
: [a] "+y" (A), [b] "+y" (B), [c] "+y" (C), [d] "+y" (D), [e] "+y" (E) \
: [Wt] "m" ((W)[t]), [k] "m" (K) \
: "mm5", "mm6", "mm7" );
#define ROUND_F1_u(t,A,B,C,D,E,K,W) \
asm ( \
"\n\t movq %[d], %%mm5" /* begin F1(B,C,D) */ \
"\n\t pxor %[c], %%mm5" \
"\n\t movq %[a], %%mm7" /* begin S(5,A) */ \
"\n\t pand %[b], %%mm5" \
"\n\t pslld $5, %%mm7" \
"\n\t pxor %[d], %%mm5" \
"\n\t movq %[a], %%mm6" \
"\n\t paddd %%mm5,%[e]" /* sum F1(B,C,D) to E */ \
"\n\t psrld $27, %%mm6" \
"\n\t paddd %[k], %[e]" /* sum K to E */ \
"\n\t por %%mm6,%%mm7" \
"\n\t movq %[b], %%mm5" /* begin S(30,B) */ \
"\n\t paddd %%mm7,%[e]" /* sum S(5,A) to E */ \
"\n\t movq %[Wt_3],%%mm7" /* begin Wf(t) */ \
"\n\t movq %[Wt_8],%%mm6" \
"\n\t pxor %[Wt_14],%%mm7" \
"\n\t pxor %[Wt_16],%%mm6" \
"\n\t pslld $30, %[b]" \
"\n\t pxor %%mm6,%%mm7" \
"\n\t movq %%mm7,%%mm6" \
"\n\t pslld $1, %%mm7" \
"\n\t psrld $31, %%mm6" \
"\n\t psrld $2, %%mm5" \
"\n\t por %%mm6,%%mm7" \
"\n\t por %%mm5,%[b]" /* complete S(30,B) */ \
"\n\t paddd %%mm7,%[e]" /* sum Wf(t) to E */ \
"\n\t movq %%mm7,%[Wt]" /* write back Wf(t) to W[t] */ \
: [a] "+y" (A), [b] "+y" (B), [c] "+y" (C), [d] "+y" (D), [e] "+y" (E), [Wt] "=m" ((W)[t]) \
: [Wt_3] "m" ((W)[t-3]), [Wt_14] "m" ((W)[t-14]), [Wt_8] "m" ((W)[t-8]), [Wt_16] "m" ((W)[t-16]), [k] "m" (K) \
: "mm5", "mm6", "mm7" );
#define ROUND_F2_n(t,A,B,C,D,E,K,W) \
asm ( \
"\n\t movq %[b], %%mm5" /* begin F2(B,C,D) */ \
"\n\t movq %[a], %%mm7" /* begin S(5,A) */ \
"\n\t pxor %[c], %%mm5" \
"\n\t pslld $5, %%mm7" \
"\n\t pxor %[d], %%mm5" \
"\n\t movq %[a], %%mm6" \
"\n\t paddd %%mm5,%[e]" /* sum F2(B,C,D) to E */ \
"\n\t psrld $27, %%mm6" \
"\n\t paddd %[k], %[e]" /* sum K to E */ \
"\n\t por %%mm6,%%mm7" \
"\n\t movq %[b], %%mm5" /* begin S(30,B) */ \
"\n\t paddd %%mm7,%[e]" /* sum S(5,A) to E */ \
"\n\t pslld $30, %[b]" \
"\n\t psrld $2, %%mm5" \
"\n\t paddd %[Wt],%[e]" /* sum W[t] to E */ \
"\n\t por %%mm5,%[b]" /* complete S(30,B) */ \
: [a] "+y" (A), [b] "+y" (B), [c] "+y" (C), [d] "+y" (D), [e] "+y" (E) \
: [Wt] "m" ((W)[t]), [k] "m" (K) \
: "mm5", "mm6", "mm7" );
#define ROUND_F2_u(t,A,B,C,D,E,K,W) \
asm ( \
"\n\t movq %[b], %%mm5" /* begin F2(B,C,D) */ \
"\n\t movq %[a], %%mm7" /* begin S(5,A) */ \
"\n\t pxor %[c], %%mm5" \
"\n\t pslld $5, %%mm7" \
"\n\t pxor %[d], %%mm5" \
"\n\t movq %[a], %%mm6" \
"\n\t paddd %%mm5,%[e]" /* sum F2(B,C,D) to E */ \
"\n\t psrld $27, %%mm6" \
"\n\t paddd %[k], %[e]" /* sum K to E */ \
"\n\t por %%mm6,%%mm7" \
"\n\t movq %[b], %%mm5" /* begin S(30,B) */ \
"\n\t paddd %%mm7,%[e]" /* sum S(5,A) to E */ \
"\n\t movq %[Wt_3],%%mm7" /* begin Wf(t) */ \
"\n\t movq %[Wt_8],%%mm6" \
"\n\t pxor %[Wt_14],%%mm7" \
"\n\t pxor %[Wt_16],%%mm6" \
"\n\t pslld $30, %[b]" \
"\n\t pxor %%mm6,%%mm7" \
"\n\t movq %%mm7,%%mm6" \
"\n\t pslld $1, %%mm7" \
"\n\t psrld $31, %%mm6" \
"\n\t psrld $2, %%mm5" \
"\n\t por %%mm6,%%mm7" \
"\n\t por %%mm5,%[b]" /* complete S(30,B) */ \
"\n\t paddd %%mm7,%[e]" /* sum Wf(t) to E */ \
"\n\t movq %%mm7,%[Wt]" /* write back Wf(t) to W[t] */ \
: [a] "+y" (A), [b] "+y" (B), [c] "+y" (C), [d] "+y" (D), [e] "+y" (E), [Wt] "=m" ((W)[t]) \
: [Wt_3] "m" ((W)[t-3]), [Wt_14] "m" ((W)[t-14]), [Wt_8] "m" ((W)[t-8]), [Wt_16] "m" ((W)[t-16]), [k] "m" (K) \
: "mm5", "mm6", "mm7" );
#define ROUND_F3_n(t,A,B,C,D,E,K,W) \
asm ( \
"\n\t movq %[d], %%mm5" /* begin F3(B,C,D) */ \
"\n\t movq %[d], %%mm6" \
"\n\t por %[c], %%mm5" \
"\n\t pand %[c], %%mm6" \
"\n\t movq %[a], %%mm7" /* begin S(5,A) */ \
"\n\t pand %[b], %%mm5" \
"\n\t pslld $5, %%mm7" \
"\n\t por %%mm6,%%mm5" \
"\n\t movq %[a], %%mm6" \
"\n\t paddd %%mm5,%[e]" /* sum F3(B,C,D) to E */ \
"\n\t psrld $27, %%mm6" \
"\n\t paddd %[k], %[e]" /* sum K to E */ \
"\n\t por %%mm6,%%mm7" \
"\n\t movq %[b], %%mm5" /* begin S(30,B) */ \
"\n\t paddd %%mm7,%[e]" /* sum S(5,A) to E */ \
"\n\t pslld $30, %[b]" \
"\n\t psrld $2, %%mm5" \
"\n\t paddd %[Wt],%[e]" /* sum W[t] to E */ \
"\n\t por %%mm5,%[b]" /* complete S(30,B) */ \
: [a] "+y" (A), [b] "+y" (B), [c] "+y" (C), [d] "+y" (D), [e] "+y" (E) \
: [Wt] "m" ((W)[t]), [k] "m" (K) \
: "mm5", "mm6", "mm7" );
#define ROUND_F3_u(t,A,B,C,D,E,K,W) \
asm ( \
"\n\t movq %[d], %%mm5" /* begin F3(B,C,D) */ \
"\n\t movq %[d], %%mm6" \
"\n\t por %[c], %%mm5" \
"\n\t pand %[c], %%mm6" \
"\n\t movq %[a], %%mm7" /* begin S(5,A) */ \
"\n\t pand %[b], %%mm5" \
"\n\t pslld $5, %%mm7" \
"\n\t por %%mm6,%%mm5" \
"\n\t movq %[a], %%mm6" \
"\n\t paddd %%mm5,%[e]" /* sum F3(B,C,D) to E */ \
"\n\t psrld $27, %%mm6" \
"\n\t paddd %[k], %[e]" /* sum K to E */ \
"\n\t por %%mm6,%%mm7" \
"\n\t movq %[b], %%mm5" /* begin S(30,B) */ \
"\n\t paddd %%mm7,%[e]" /* sum S(5,A) to E */ \
"\n\t movq %[Wt_3],%%mm7" /* begin Wf(t) */ \
"\n\t movq %[Wt_8],%%mm6" \
"\n\t pxor %[Wt_14],%%mm7" \
"\n\t pxor %[Wt_16],%%mm6" \
"\n\t pslld $30, %[b]" \
"\n\t pxor %%mm6,%%mm7" \
"\n\t movq %%mm7,%%mm6" \
"\n\t pslld $1, %%mm7" \
"\n\t psrld $31, %%mm6" \
"\n\t psrld $2, %%mm5" \
"\n\t por %%mm6,%%mm7" \
"\n\t por %%mm5,%[b]" /* complete S(30,B) */ \
"\n\t paddd %%mm7,%[e]" /* sum Wf(t) to E */ \
"\n\t movq %%mm7,%[Wt]" /* write back Wf(t) to W[t] */ \
: [a] "+y" (A), [b] "+y" (B), [c] "+y" (C), [d] "+y" (D), [e] "+y" (E), [Wt] "=m" ((W)[t]) \
: [Wt_3] "m" ((W)[t-3]), [Wt_14] "m" ((W)[t-14]), [Wt_8] "m" ((W)[t-8]), [Wt_16] "m" ((W)[t-16]), [k] "m" (K) \
: "mm5", "mm6", "mm7" );
#define ROUND_F4_u ROUND_F2_u
#define ROUND_F4_n ROUND_F2_n
#define ROUNDu(t,A,B,C,D,E,Func,K) \
if((t) < 16) { \
ROUND_##Func##_n(t,A,B,C,D,E,K,W); \
} else { \
ROUND_##Func##_u(t,A,B,C,D,E,K,W); \
}
#define ROUNDn(t,A,B,C,D,E,Func,K) \
ROUND_##Func##_n(t,A,B,C,D,E,K,W); \
#define ROUND5( t, Func, K ) \
ROUNDu( t + 0, A, B, C, D, E, Func, K );\
ROUNDu( t + 1, E, A, B, C, D, Func, K );\
ROUNDu( t + 2, D, E, A, B, C, Func, K );\
ROUNDu( t + 3, C, D, E, A, B, Func, K );\
ROUNDu( t + 4, B, C, D, E, A, Func, K );
#if defined(MINTER_CALLBACK_CLEANUP_FP)
#undef MINTER_CALLBACK_CLEANUP_FP
#endif
#define MINTER_CALLBACK_CLEANUP_FP __builtin_ia32_emms()
unsigned long minter_mmx_standard_1(int bits, int* best, unsigned char *block, const uInt32 IV[5], int tailIndex, unsigned long maxIter, MINTER_CALLBACK_ARGS)
{
#if (defined(__i386__) || defined(__AMD64__)) && defined(__GNUC__) && defined(__MMX__)
MINTER_CALLBACK_VARS;
unsigned long iters = 0 ;
int n = 0, t = 0, gotBits = 0, maxBits = (bits > 16) ? 16 : bits;
uInt32 bitMask1Low = 0 , bitMask1High = 0 , s = 0 ;
mmx_d_t vBitMaskHigh = {} , vBitMaskLow = {} ;
register mmx_d_t A = {} , B = {} , C = {} , D = {} , E = {} ;
mmx_d_t MA = {} , MB = {} ;
mmx_d_t W[80] = {} ;
mmx_d_t H[5] = {} , pH[5] = {} ;
mmx_d_t K[4] = {} ;
uInt32 *Hw = (uInt32*) H;
uInt32 *pHw = (uInt32*) pH;
uInt32 IA = 0 , IB = 0 ;
const char *p = encodeAlphabets[EncodeBase64];
unsigned char *X = (unsigned char*) W;
unsigned char *output = (unsigned char*) block;
*best = 0;
/* Splat Kn constants into MMX-style array */
((uInt32*)K)[0] = ((uInt32*)K)[1] = K1;
((uInt32*)K)[2] = ((uInt32*)K)[3] = K2;
((uInt32*)K)[4] = ((uInt32*)K)[5] = K3;
((uInt32*)K)[6] = ((uInt32*)K)[7] = K4;
/* Work out which bits to mask out for test */
if(maxBits < 32) {
if ( bits == 0 ) { bitMask1Low = 0; } else {
bitMask1Low = ~((((uInt32) 1) << (32 - maxBits)) - 1);
}
bitMask1High = 0;
} else {
bitMask1Low = ~0;
bitMask1High = ~((((uInt32) 1) << (64 - maxBits)) - 1);
}
((uInt32*) &vBitMaskLow )[0] = bitMask1Low ;
((uInt32*) &vBitMaskLow )[1] = bitMask1Low ;
((uInt32*) &vBitMaskHigh)[0] = bitMask1High;
((uInt32*) &vBitMaskHigh)[1] = bitMask1High;
maxBits = 0;
/* Copy block and IV to vectorised internal storage */
/* Assume little-endian order, as we're on x86 or AMD64 */
for(t=0; t < 16; t++) {
X[t*8+ 0] = X[t*8+ 4] = output[t*4+3];
X[t*8+ 1] = X[t*8+ 5] = output[t*4+2];
X[t*8+ 2] = X[t*8+ 6] = output[t*4+1];
X[t*8+ 3] = X[t*8+ 7] = output[t*4+0];
}
for(t=0; t < 5; t++) {
Hw[t*2+0] = Hw[t*2+1] =
pHw[t*2+0] = pHw[t*2+1] = IV[t];
}
/* The Tight Loop - everything in here should be extra efficient */
for(iters=0; iters < maxIter-2; iters += 2) {
/* Encode iteration count into tail */
/* Iteration count is always 2-aligned, so only least-significant character needs multiple lookup */
/* Further, we assume we're always little-endian */
X[(((tailIndex - 1) & ~3) << 1) + (((tailIndex - 1) & 3) ^ 3) + 0] = p[(iters & 0x3e) + 0];
X[(((tailIndex - 1) & ~3) << 1) + (((tailIndex - 1) & 3) ^ 3) + 4] = p[(iters & 0x3e) + 1];
if(!(iters & 0x3f)) {
if ( iters >> 6 ) {
X[(((tailIndex - 2) & ~3) << 1) + (((tailIndex - 2) & 3) ^ 3) + 0] =
X[(((tailIndex - 2) & ~3) << 1) + (((tailIndex - 2) & 3) ^ 3) + 4] = p[(iters >> 6) & 0x3f];
}
if ( iters >> 12 ) {
X[(((tailIndex - 3) & ~3) << 1) + (((tailIndex - 3) & 3) ^ 3) + 0] =
X[(((tailIndex - 3) & ~3) << 1) + (((tailIndex - 3) & 3) ^ 3) + 4] = p[(iters >> 12) & 0x3f];
}
if ( iters >> 18 ) {
X[(((tailIndex - 4) & ~3) << 1) + (((tailIndex - 4) & 3) ^ 3) + 0] =
X[(((tailIndex - 4) & ~3) << 1) + (((tailIndex - 4) & 3) ^ 3) + 4] = p[(iters >> 18) & 0x3f];
}
if ( iters >> 24 ) {
X[(((tailIndex - 5) & ~3) << 1) + (((tailIndex - 5) & 3) ^ 3) + 0] =
X[(((tailIndex - 5) & ~3) << 1) + (((tailIndex - 5) & 3) ^ 3) + 4] = p[(iters >> 24) & 0x3f];
}
if ( iters >> 30 ) {
X[(((tailIndex - 6) & ~3) << 1) + (((tailIndex - 6) & 3) ^ 3) + 0] =
X[(((tailIndex - 6) & ~3) << 1) + (((tailIndex - 6) & 3) ^ 3) + 4] = p[(iters >> 30) & 0x3f];
}
}
/* Force compiler to flush and reload MMX registers */
asm volatile ( "nop" : : : "mm0", "mm1", "mm2", "mm3", "mm4", "mm5", "mm6", "mm7", "memory" );
/* Bypass shortcuts below on certain iterations */
if((!(iters & 0xffffff)) && (tailIndex == 52 || tailIndex == 32)) {
/* Populate W buffer */
for(t=16; t < 32; t += 4) {
asm volatile (
/* Use pairs of adjacent MMX registers to build four nearly-independent chains */
"\n\t movq -128(%[w]),%%mm0"
"\n\t movq -120(%[w]),%%mm2"
"\n\t movq -112(%[w]),%%mm4"
"\n\t movq -104(%[w]),%%mm6"
"\n\t pxor %%mm4, %%mm0"
"\n\t pxor %%mm6, %%mm2"
"\n\t pxor -96(%[w]),%%mm4"
"\n\t pxor -88(%[w]),%%mm6"
"\n\t pxor -64(%[w]),%%mm0"
"\n\t pxor -56(%[w]),%%mm2"
"\n\t pxor -48(%[w]),%%mm4"
"\n\t pxor -40(%[w]),%%mm6"
"\n\t pxor -24(%[w]),%%mm0"
"\n\t pxor -16(%[w]),%%mm2"
/* 0(%[w]) is not yet valid! */
"\n\t movq %%mm0, %%mm1"
"\n\t movq %%mm2, %%mm3"
"\n\t pslld $1, %%mm0"
"\n\t psrld $31, %%mm1"
"\n\t pslld $1, %%mm2"
"\n\t psrld $31, %%mm3"
"\n\t por %%mm1, %%mm0"
"\n\t por %%mm3, %%mm2"
/* ...now it is */
"\n\t pxor -8(%[w]),%%mm4"
"\n\t pxor %%mm0, %%mm6"
"\n\t movq %%mm4, %%mm5"
"\n\t movq %%mm6, %%mm7"
"\n\t pslld $1, %%mm4"
"\n\t psrld $31, %%mm5"
"\n\t pslld $1, %%mm6"
"\n\t psrld $31, %%mm7"
"\n\t por %%mm5, %%mm4"
"\n\t por %%mm7, %%mm6"
"\n\t movq %%mm0, 0(%[w])"
"\n\t movq %%mm2, 8(%[w])"
"\n\t movq %%mm4,16(%[w])"
"\n\t movq %%mm6,24(%[w])"
: /* no outputs */
: [w] "r" (W+t)
: "mm0", "mm1", "mm2", "mm3", "mm4", "mm5", "mm6", "mm7", "memory"
);
}
A = H[0];
B = H[1];
C = H[2];
D = H[3];
E = H[4];
ROUNDn( 0, A, B, C, D, E, F1, K[0] );
ROUNDn( 1, E, A, B, C, D, F1, K[0] );
ROUNDn( 2, D, E, A, B, C, F1, K[0] );
ROUNDn( 3, C, D, E, A, B, F1, K[0] );
ROUNDn( 4, B, C, D, E, A, F1, K[0] );
ROUNDn( 5, A, B, C, D, E, F1, K[0] );
ROUNDn( 6, E, A, B, C, D, F1, K[0] );
if(tailIndex == 52) {
ROUNDn( 7, D, E, A, B, C, F1, K[0] );
ROUNDn( 8, C, D, E, A, B, F1, K[0] );
ROUNDn( 9, B, C, D, E, A, F1, K[0] );
ROUNDn(10, A, B, C, D, E, F1, K[0] );
ROUNDn(11, E, A, B, C, D, F1, K[0] );
}
pH[0] = A;
pH[1] = B;
pH[2] = C;
pH[3] = D;
pH[4] = E;
}
/* Set up working variables */
A = pH[0];
B = pH[1];
C = pH[2];
D = pH[3];
E = pH[4];
/* Do the rounds */
switch(tailIndex) {
default:
ROUNDn( 0, A, B, C, D, E, F1, K[0] );
ROUNDn( 1, E, A, B, C, D, F1, K[0] );
ROUNDn( 2, D, E, A, B, C, F1, K[0] );
ROUNDn( 3, C, D, E, A, B, F1, K[0] );
ROUNDn( 4, B, C, D, E, A, F1, K[0] );
ROUNDn( 5, A, B, C, D, E, F1, K[0] );
ROUNDn( 6, E, A, B, C, D, F1, K[0] );
case 32:
ROUNDn( 7, D, E, A, B, C, F1, K[0] );
ROUNDn( 8, C, D, E, A, B, F1, K[0] );
ROUNDn( 9, B, C, D, E, A, F1, K[0] );
ROUNDn(10, A, B, C, D, E, F1, K[0] );
ROUNDn(11, E, A, B, C, D, F1, K[0] );
case 52:
ROUNDn(12, D, E, A, B, C, F1, K[0] );
ROUNDn(13, C, D, E, A, B, F1, K[0] );
ROUNDn(14, B, C, D, E, A, F1, K[0] );
ROUNDn(15, A, B, C, D, E, F1, K[0] );
}
if(tailIndex == 52) {
ROUNDn(16, E, A, B, C, D, F1, K[0] );
ROUNDn(17, D, E, A, B, C, F1, K[0] );
ROUNDn(18, C, D, E, A, B, F1, K[0] );
ROUNDn(19, B, C, D, E, A, F1, K[0] );
ROUNDu(20, A, B, C, D, E, F2, K[1] );
ROUNDn(21, E, A, B, C, D, F2, K[1] );
ROUNDn(22, D, E, A, B, C, F2, K[1] );
ROUNDu(23, C, D, E, A, B, F2, K[1] );
ROUNDn(24, B, C, D, E, A, F2, K[1] );
ROUNDn(25, A, B, C, D, E, F2, K[1] );
ROUNDu(26, E, A, B, C, D, F2, K[1] );
ROUNDn(27, D, E, A, B, C, F2, K[1] );
ROUNDu(28, C, D, E, A, B, F2, K[1] );
ROUNDu(29, B, C, D, E, A, F2, K[1] );
ROUNDn(30, A, B, C, D, E, F2, K[1] );
} else if (tailIndex == 32) {
ROUNDn(16, E, A, B, C, D, F1, K[0] );
ROUNDn(17, D, E, A, B, C, F1, K[0] );
ROUNDn(18, C, D, E, A, B, F1, K[0] );
ROUNDn(19, B, C, D, E, A, F1, K[0] );
ROUNDn(20, A, B, C, D, E, F2, K[1] );
ROUNDu(21, E, A, B, C, D, F2, K[1] );
ROUNDn(22, D, E, A, B, C, F2, K[1] );
ROUNDu(23, C, D, E, A, B, F2, K[1] );
ROUNDu(24, B, C, D, E, A, F2, K[1] );
ROUNDn(25, A, B, C, D, E, F2, K[1] );
ROUNDu(26, E, A, B, C, D, F2, K[1] );
ROUNDu(27, D, E, A, B, C, F2, K[1] );
ROUNDn(28, C, D, E, A, B, F2, K[1] );
ROUNDu(29, B, C, D, E, A, F2, K[1] );
ROUNDu(30, A, B, C, D, E, F2, K[1] );
} else {
ROUNDu(16, E, A, B, C, D, F1, K[0] );
ROUNDu(17, D, E, A, B, C, F1, K[0] );
ROUNDu(18, C, D, E, A, B, F1, K[0] );
ROUNDu(19, B, C, D, E, A, F1, K[0] );
ROUNDu(20, A, B, C, D, E, F2, K[1] );
ROUNDu(21, E, A, B, C, D, F2, K[1] );
ROUNDu(22, D, E, A, B, C, F2, K[1] );
ROUNDu(23, C, D, E, A, B, F2, K[1] );
ROUNDu(24, B, C, D, E, A, F2, K[1] );
ROUNDu(25, A, B, C, D, E, F2, K[1] );
ROUNDu(26, E, A, B, C, D, F2, K[1] );
ROUNDu(27, D, E, A, B, C, F2, K[1] );
ROUNDu(28, C, D, E, A, B, F2, K[1] );
ROUNDu(29, B, C, D, E, A, F2, K[1] );
ROUNDu(30, A, B, C, D, E, F2, K[1] );
}
ROUNDu(31, E, A, B, C, D, F2, K[1] );
ROUNDu(32, D, E, A, B, C, F2, K[1] );
ROUNDu(33, C, D, E, A, B, F2, K[1] );
ROUNDu(34, B, C, D, E, A, F2, K[1] );
ROUNDu(35, A, B, C, D, E, F2, K[1] );
ROUNDu(36, E, A, B, C, D, F2, K[1] );
ROUNDu(37, D, E, A, B, C, F2, K[1] );
ROUNDu(38, C, D, E, A, B, F2, K[1] );
ROUNDu(39, B, C, D, E, A, F2, K[1] );
ROUND5(40, F3, K[2] );
ROUND5(45, F3, K[2] );
ROUND5(50, F3, K[2] );
ROUND5(55, F3, K[2] );
ROUND5(60, F4, K[3] );
ROUND5(65, F4, K[3] );
ROUND5(70, F4, K[3] );
ROUND5(75, F4, K[3] );
/* Mix in the IV again */
MA = ADD(A, H[0]);
MB = ADD(B, H[1]);
/* Go over each vector element in turn */
for(n=0; n < 2; n++) {
/* Extract A and B components */
IA = ((uInt32*) &MA)[n];
IB = ((uInt32*) &MB)[n];
/* Is this the best bit count so far? */
if(!(IA & bitMask1Low) && !(IB & bitMask1High)) {
/* Count bits */
gotBits = 0;
if(IA) {
s = IA;
while(!(s & 0x80000000)) {
s <<= 1;
gotBits++;
}
} else {
gotBits = 32;
if(IB) {
s = IB;
while(!(s & 0x80000000)) {
s <<= 1;
gotBits++;
}
} else {
gotBits = 64;
}
}
*best = gotBits;
/* Regenerate the bit mask */
maxBits = gotBits+1;
if(maxBits < 32) {
bitMask1Low = ~((((uInt32) 1) << (32 - maxBits)) - 1);
bitMask1High = 0;
} else {
bitMask1Low = ~0;
bitMask1High = ~((((uInt32) 1) << (64 - maxBits)) - 1);
}
((uInt32*) &vBitMaskLow )[0] = bitMask1Low ;
((uInt32*) &vBitMaskLow )[1] = bitMask1Low ;
((uInt32*) &vBitMaskHigh)[0] = bitMask1High;
((uInt32*) &vBitMaskHigh)[1] = bitMask1High;
/* Copy this result back to the block buffer, little-endian */
for(t=0; t < 16; t++) {
output[t*4+0] = X[t*8+3+n*4];
output[t*4+1] = X[t*8+2+n*4];
output[t*4+2] = X[t*8+1+n*4];
output[t*4+3] = X[t*8+0+n*4];
}
/* Is it good enough to bail out? */
if(gotBits >= bits) {
/* Shut down use of MMX */
__builtin_ia32_emms();
return iters+2;
}
}
}
MINTER_CALLBACK();
}
/* Shut down use of MMX */
__builtin_ia32_emms();
return iters+2;
/* For other platforms */
#else
return 0;
#endif
}
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