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gfc.patch
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--- include/gf_complete.h
+++ include/gf_complete.h
@@ -54,6 +54,7 @@
GF_MULT_LOG_ZERO,
GF_MULT_LOG_ZERO_EXT,
GF_MULT_SPLIT_TABLE,
+ GF_MULT_XOR_DEPENDS,
GF_MULT_COMPOSITE } gf_mult_type_t;
/* These are the different ways to optimize region
--- include/gf_int.h
+++ include/gf_int.h
@@ -20,6 +20,12 @@
extern void galois_fill_random (void *buf, int len, unsigned int seed);
typedef struct {
+ uint8_t* ptr;
+ size_t len;
+ uint8_t* code;
+} jit_t;
+
+typedef struct {
int mult_type;
int region_type;
int divide_type;
@@ -29,6 +35,9 @@
int arg1;
int arg2;
gf_t *base_gf;
+#ifdef INTEL_SSE2
+ jit_t jit;
+#endif
void *private;
} gf_internal_t;
--- src/gf.c
+++ src/gf.c
@@ -323,6 +323,13 @@
return 1;
}
+ if (mult_type == GF_MULT_XOR_DEPENDS) {
+ // TODO: fill in error checks
+ //if (!raltmap) { _gf_errno = GF_E_ALT_BY2; return 0; }
+ //if (!sse2) { _gf_errno = GF_E_BY2_SSE; return 0; }
+ return 1;
+ }
+
if (mult_type == GF_MULT_GROUP) {
if (arg1 <= 0 || arg2 <= 0) { _gf_errno = GF_E_GR_ARGX; return 0; }
if (w == 4 || w == 8) { _gf_errno = GF_E_GR_W_48; return 0; }
@@ -498,6 +505,9 @@
h->base_gf = base_gf;
h->private = (void *) gf->scratch;
h->private = (uint8_t *)h->private + (sizeof(gf_internal_t));
+#ifdef INTEL_SSE2
+ h->jit.code = NULL;
+#endif
gf->extract_word.w32 = NULL;
switch(w) {
@@ -511,6 +521,15 @@
}
}
+#ifdef INTEL_SSE2
+#if defined(_WINDOWS) || defined(__WINDOWS__) || defined(_WIN32) || defined(_WIN64)
+#include <windows.h>
+#define jit_free(mem, len) VirtualFree(mem, 0, MEM_RELEASE)
+#else
+#include <sys/mman.h>
+#define jit_free(mem, len) munmap(mem, len)
+#endif
+#endif
int gf_free(gf_t *gf, int recursive)
{
gf_internal_t *h;
@@ -520,6 +539,10 @@
gf_free(h->base_gf, 1);
free(h->base_gf);
}
+#ifdef INTEL_SSE2
+ if (h->jit.code)
+ jit_free(h->jit.code, h->jit.len);
+#endif
if (h->free_me) free(h);
return 0; /* Making compiler happy */
}
--- src/gf_general.c
+++ src/gf_general.c
@@ -265,7 +265,7 @@
void gf_general_do_region_check(gf_t *gf, gf_general_t *a, void *orig_a, void *orig_target, void *final_target, int bytes, int xor)
{
gf_internal_t *h;
- int w, words, i;
+ int w, words, i, dumpstart, dumprows, dumprow, dumpcol;
gf_general_t oa, ot, ft, sb;
char sa[50], soa[50], sot[50], sft[50], ssb[50];
@@ -300,8 +300,8 @@
if (!gf_general_are_equal(&ft, &sb, w)) {
fprintf(stderr,"Problem with region multiply (all values in hex):\n");
- fprintf(stderr," Target address base: 0x%lx. Word 0x%x of 0x%x. Xor: %d\n",
- (unsigned long) final_target, i, words, xor);
+ fprintf(stderr," Source address base: 0x%lx, target address base: 0x%lx. Word 0x%x of 0x%x. Xor: %d\n",
+ (unsigned long) orig_a, (unsigned long) final_target, i, words, xor);
gf_general_val_to_s(a, w, sa, 1);
gf_general_val_to_s(&oa, w, soa, 1);
gf_general_val_to_s(&ot, w, sot, 1);
@@ -312,6 +312,29 @@
if (xor) fprintf(stderr," XOR with target word: %s\n", sot);
fprintf(stderr," Product word: %s\n", sft);
fprintf(stderr," It should be: %s\n", ssb);
+
+ /* dump memory region */
+ dumpstart = (i * w) & ~0xff;
+ dumprows = bytes >> 4;
+ if(dumprows > 16) dumprows = 16;
+ fprintf(stderr, "Memory dump (original)\n");
+ fprintf(stderr, " - 0 1 2 3 4 5 6 7 8 9 A B C D E F\n");
+ for (dumprow = 0; dumprow < dumprows; dumprow++) {
+ fprintf(stderr, "%08X | ", dumpstart + dumprow * 16);
+ for (dumpcol = 0; dumpcol < 16; dumpcol++) {
+ fprintf(stderr, "%02X ", ((uint8_t*)orig_a)[dumpstart + dumprow * 16 + dumpcol]);
+ }
+ fprintf(stderr, "\n");
+ }
+ fprintf(stderr, "\nMemory dump (target)\n");
+ fprintf(stderr, " - 0 1 2 3 4 5 6 7 8 9 A B C D E F\n");
+ for (dumprow = 0; dumprow < dumprows; dumprow++) {
+ fprintf(stderr, "%08X | ", dumpstart + dumprow * 16);
+ for (dumpcol = 0; dumpcol < 16; dumpcol++) {
+ fprintf(stderr, "%02X ", ((uint8_t*)final_target)[dumpstart + dumprow * 16 + dumpcol]);
+ }
+ fprintf(stderr, "\n");
+ }
assert(0);
}
}
--- src/gf_method.c
+++ src/gf_method.c
@@ -80,6 +80,9 @@
} else if (strcmp(argv[starting], "LOG_ZERO_EXT") == 0) {
mult_type = GF_MULT_LOG_ZERO_EXT;
starting++;
+ } else if (strcmp(argv[starting], "XOR_DEPENDS") == 0) {
+ mult_type = GF_MULT_XOR_DEPENDS;
+ starting++;
} else if (strcmp(argv[starting], "SPLIT") == 0) {
mult_type = GF_MULT_SPLIT_TABLE;
if (argc < starting + 3) {
--- src/gf_w128.c
+++ src/gf_w128.c
@@ -110,10 +110,6 @@
if (xor) {
for (i = 0; i < bytes/sizeof(gf_val_64_t); i += 2) {
- a = _mm_insert_epi64 (_mm_setzero_si128(), s128[i+1], 0);
- b = _mm_insert_epi64 (a, val[1], 0);
- a = _mm_insert_epi64 (a, s128[i], 1);
- b = _mm_insert_epi64 (b, val[0], 1);
c = _mm_clmulepi64_si128 (a, b, 0x00); /*low-low*/
f = _mm_clmulepi64_si128 (a, b, 0x01); /*high-low*/
@@ -124,13 +120,6 @@
result0 = _mm_setzero_si128();
result1 = result0;
- result0 = _mm_xor_si128 (result0, _mm_insert_epi64 (d, 0, 0));
- a = _mm_xor_si128 (_mm_srli_si128 (e, 8), _mm_insert_epi64 (d, 0, 1));
- result0 = _mm_xor_si128 (result0, _mm_xor_si128 (_mm_srli_si128 (f, 8), a));
-
- a = _mm_xor_si128 (_mm_slli_si128 (e, 8), _mm_insert_epi64 (c, 0, 0));
- result1 = _mm_xor_si128 (result1, _mm_xor_si128 (_mm_slli_si128 (f, 8), a));
- result1 = _mm_xor_si128 (result1, _mm_insert_epi64 (c, 0, 1));
/* now we have constructed our 'result' with result0 being the carry bits, and we have to reduce. */
a = _mm_srli_si128 (result0, 8);
@@ -138,18 +127,11 @@
result0 = _mm_xor_si128 (result0, _mm_srli_si128 (b, 8));
result1 = _mm_xor_si128 (result1, _mm_slli_si128 (b, 8));
- a = _mm_insert_epi64 (result0, 0, 1);
b = _mm_clmulepi64_si128 (a, prim_poly, 0x00);
result1 = _mm_xor_si128 (result1, b);
- d128[i] ^= (uint64_t)_mm_extract_epi64(result1,1);
- d128[i+1] ^= (uint64_t)_mm_extract_epi64(result1,0);
}
} else {
for (i = 0; i < bytes/sizeof(gf_val_64_t); i += 2) {
- a = _mm_insert_epi64 (_mm_setzero_si128(), s128[i+1], 0);
- b = _mm_insert_epi64 (a, val[1], 0);
- a = _mm_insert_epi64 (a, s128[i], 1);
- b = _mm_insert_epi64 (b, val[0], 1);
c = _mm_clmulepi64_si128 (a, b, 0x00); /*low-low*/
f = _mm_clmulepi64_si128 (a, b, 0x01); /*high-low*/
@@ -160,13 +142,6 @@
result0 = _mm_setzero_si128();
result1 = result0;
- result0 = _mm_xor_si128 (result0, _mm_insert_epi64 (d, 0, 0));
- a = _mm_xor_si128 (_mm_srli_si128 (e, 8), _mm_insert_epi64 (d, 0, 1));
- result0 = _mm_xor_si128 (result0, _mm_xor_si128 (_mm_srli_si128 (f, 8), a));
-
- a = _mm_xor_si128 (_mm_slli_si128 (e, 8), _mm_insert_epi64 (c, 0, 0));
- result1 = _mm_xor_si128 (result1, _mm_xor_si128 (_mm_slli_si128 (f, 8), a));
- result1 = _mm_xor_si128 (result1, _mm_insert_epi64 (c, 0, 1));
/* now we have constructed our 'result' with result0 being the carry bits, and we have to reduce.*/
a = _mm_srli_si128 (result0, 8);
@@ -174,11 +149,8 @@
result0 = _mm_xor_si128 (result0, _mm_srli_si128 (b, 8));
result1 = _mm_xor_si128 (result1, _mm_slli_si128 (b, 8));
- a = _mm_insert_epi64 (result0, 0, 1);
b = _mm_clmulepi64_si128 (a, prim_poly, 0x00);
result1 = _mm_xor_si128 (result1, b);
- d128[i] = (uint64_t)_mm_extract_epi64(result1,1);
- d128[i+1] = (uint64_t)_mm_extract_epi64(result1,0);
}
}
}
@@ -301,11 +273,6 @@
__m128i c,d,e,f;
gf_internal_t * h = gf->scratch;
- a = _mm_insert_epi64 (_mm_setzero_si128(), a128[1], 0);
- b = _mm_insert_epi64 (a, b128[1], 0);
- a = _mm_insert_epi64 (a, a128[0], 1);
- b = _mm_insert_epi64 (b, b128[0], 1);
-
prim_poly = _mm_set_epi32(0, 0, 0, (uint32_t)h->prim_poly);
/* we need to test algorithm 2 later*/
@@ -318,13 +285,6 @@
result0 = _mm_setzero_si128();
result1 = result0;
- result0 = _mm_xor_si128 (result0, _mm_insert_epi64 (d, 0, 0));
- a = _mm_xor_si128 (_mm_srli_si128 (e, 8), _mm_insert_epi64 (d, 0, 1));
- result0 = _mm_xor_si128 (result0, _mm_xor_si128 (_mm_srli_si128 (f, 8), a));
-
- a = _mm_xor_si128 (_mm_slli_si128 (e, 8), _mm_insert_epi64 (c, 0, 0));
- result1 = _mm_xor_si128 (result1, _mm_xor_si128 (_mm_slli_si128 (f, 8), a));
- result1 = _mm_xor_si128 (result1, _mm_insert_epi64 (c, 0, 1));
/* now we have constructed our 'result' with result0 being the carry bits, and we have to reduce.*/
a = _mm_srli_si128 (result0, 8);
@@ -332,12 +292,9 @@
result0 = _mm_xor_si128 (result0, _mm_srli_si128 (b, 8));
result1 = _mm_xor_si128 (result1, _mm_slli_si128 (b, 8));
- a = _mm_insert_epi64 (result0, 0, 1);
b = _mm_clmulepi64_si128 (a, prim_poly, 0x00);
result1 = _mm_xor_si128 (result1, b);
- c128[0] = (uint64_t)_mm_extract_epi64(result1,1);
- c128[1] = (uint64_t)_mm_extract_epi64(result1,0);
#endif
return;
}
@@ -390,10 +347,6 @@
h = (gf_internal_t *) gf->scratch;
pp = _mm_set_epi32(0, 0, 0, (uint32_t)h->prim_poly);
prod = _mm_setzero_si128();
- a = _mm_insert_epi64(prod, a128[1], 0x0);
- a = _mm_insert_epi64(a, a128[0], 0x1);
- b = _mm_insert_epi64(prod, b128[1], 0x0);
- b = _mm_insert_epi64(b, b128[0], 0x1);
pmask = 0x80000000;
amask = _mm_insert_epi32(prod, 0x80000000, 0x3);
u_middle_one = _mm_insert_epi32(prod, 1, 0x2);
@@ -408,9 +361,6 @@
if (topbit) {
prod = _mm_xor_si128(prod, pp);
}
- if (((uint64_t)_mm_extract_epi64(_mm_and_si128(a, amask), 1))) {
- prod = _mm_xor_si128(prod, b);
- }
amask = _mm_srli_epi64(amask, 1); /*so does this one, but we can just replace after loop*/
}
amask = _mm_insert_epi32(amask, 1 << 31, 0x1);
@@ -420,13 +370,8 @@
prod = _mm_slli_epi64(prod, 1);
if (middlebit) prod = _mm_xor_si128(prod, u_middle_one);
if (topbit) prod = _mm_xor_si128(prod, pp);
- if (((uint64_t)_mm_extract_epi64(_mm_and_si128(a, amask), 0))) {
- prod = _mm_xor_si128(prod, b);
- }
amask = _mm_srli_epi64(amask, 1);
}
- c128[0] = (uint64_t)_mm_extract_epi64(prod, 1);
- c128[1] = (uint64_t)_mm_extract_epi64(prod, 0);
#endif
return;
}
@@ -444,14 +389,6 @@
h = (gf_internal_t *) gf->scratch;
c = _mm_setzero_si128();
- lmask = _mm_insert_epi64(c, 1ULL << 63, 0);
- hmask = _mm_insert_epi64(c, 1ULL << 63, 1);
- b = _mm_insert_epi64(c, a128[0], 1);
- b = _mm_insert_epi64(b, a128[1], 0);
- a = _mm_insert_epi64(c, b128[0], 1);
- a = _mm_insert_epi64(a, b128[1], 0);
- pp = _mm_insert_epi64(c, h->prim_poly, 0);
- middle_one = _mm_insert_epi64(c, 1, 0x1);
while (1) {
if (_mm_extract_epi32(a, 0x0) & 1) {
@@ -460,13 +397,6 @@
middlebit = (_mm_extract_epi32(a, 0x2) & 1);
a = _mm_srli_epi64(a, 1);
if (middlebit) a = _mm_xor_si128(a, lmask);
- if ((_mm_extract_epi64(a, 0x1) == 0ULL) && (_mm_extract_epi64(a, 0x0) == 0ULL)){
- c128[0] = _mm_extract_epi64(c, 0x1);
- c128[1] = _mm_extract_epi64(c, 0x0);
- return;
- }
- topbit = (_mm_extract_epi64(_mm_and_si128(b, hmask), 1));
- middlebit = (_mm_extract_epi64(_mm_and_si128(b, lmask), 0));
b = _mm_slli_epi64(b, 1);
if (middlebit) b = _mm_xor_si128(b, middle_one);
if (topbit) b = _mm_xor_si128(b, pp);
@@ -1508,7 +1438,6 @@
table[i] = zero;
for (j = 0; j < g_r; j++) {
if (i & (1 << j)) {
- table[i] = _mm_xor_si128(table[i], _mm_insert_epi64(zero, pp << j, 0));
}
}
}
--- src/gf_w16.c
+++ src/gf_w16.c
@@ -25,10 +25,30 @@
t2 = _mm_sub_epi64 (_mm_slli_epi64(t2, 1), _mm_srli_epi64(t2, (GF_FIELD_WIDTH-1))); \
va = _mm_xor_si128(t1, _mm_and_si128(t2, pp)); }
-#define MM_PRINT(s, r) { uint8_t blah[16], ii; printf("%-12s", s); _mm_storeu_si128((__m128i *)blah, r); for (ii = 0; ii < 16; ii += 2) printf(" %02x %02x", blah[15-ii], blah[14-ii]); printf("\n"); }
-
#define GF_FIRST_BIT (1 << 15)
-#define GF_MULTBY_TWO(p) (((p) & GF_FIRST_BIT) ? (((p) << 1) ^ h->prim_poly) : (p) << 1)
+#define GF_MULTBY_TWO(p) (((p) << 1) ^ (h->prim_poly & -((p) >> 15)))
+#define SSE_GF_MULTBY_TWO(va) \
+ _mm_xor_si128( \
+ _mm_slli_epi16((va), 1), \
+ _mm_and_si128(_mm_set1_epi16(h->prim_poly), _mm_cmpeq_epi16( \
+ _mm_and_si128((va), _mm_set1_epi16(GF_FIRST_BIT)), \
+ _mm_set1_epi16(GF_FIRST_BIT) \
+ )) \
+ )
+
+/* refers to log_val, ltd and xor (i.e. these need to be defined in the function) */
+#define _GF_W16_LOG_MULTIPLY_REGION(op, src, dest, srcto) { \
+ uint16_t *s16 = (uint16_t *)src, *d16 = (uint16_t *)dest; \
+ while (s16 < (uint16_t *)(srcto)) { \
+ *d16 op (*s16 == 0) ? 0 : ltd->antilog_tbl[(int) ltd->log_tbl[*s16] + log_val]; \
+ s16++; \
+ d16++; \
+ } \
+}
+#define GF_W16_LOG_MULTIPLY_REGION(src, dest, srcto) \
+ if(xor) _GF_W16_LOG_MULTIPLY_REGION(^=, src, dest, srcto) \
+ else _GF_W16_LOG_MULTIPLY_REGION(=, src, dest, srcto)
+
static
inline
@@ -820,6 +840,44 @@
}
}
+#ifdef TEST_SSE2_SPLIT8
+/* Peter Cordes' amd64 SSE2 implementation of SPLIT(16,8) */
+/* Note that xor=1 is always assumed */
+void __attribute__((sysv_abi)) rs_process_pinsrw128(void* dst, const void* src, size_t size, const uint32_t* LH);
+static
+void
+gf_w16_split_8_16_lazy_multiply_region(gf_t *gf, void *src, void *dest, gf_val_32_t val, int bytes, int xor)
+{
+ uint64_t j, k, v;
+ gf_internal_t *h;
+ uint32_t lhtable[512];
+ gf_region_data rd;
+ struct gf_w16_logtable_data *ltd = (struct gf_w16_logtable_data *) ((gf_internal_t *) gf->scratch)->private;
+ int log_val = ltd->log_tbl[val];
+
+ if (val == 0) { gf_multby_zero(dest, bytes, xor); return; }
+ if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; }
+
+ gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 16);
+ GF_W16_LOG_MULTIPLY_REGION(rd.src, rd.dest, rd.s_start);
+
+ h = (gf_internal_t *) gf->scratch;
+
+ v = val;
+ lhtable[0] = lhtable[256] = 0;
+ for (j = 1; j < 256; j <<= 1) {
+ for (k = 0; k < j; k++) lhtable[k^j] = (v ^ lhtable[k]);
+ v = GF_MULTBY_TWO(v);
+ }
+ for (j = 1; j < 256; j <<= 1) {
+ for (k = 0; k < j; k++) lhtable[256 + (k^j)] = (v ^ lhtable[256 + k]);
+ v = GF_MULTBY_TWO(v);
+ }
+
+ rs_process_pinsrw128(rd.d_start, rd.s_start, rd.bytes, lhtable);
+ GF_W16_LOG_MULTIPLY_REGION(rd.s_top, rd.d_top, (uint8_t *)rd.src+rd.bytes);
+}
+#else
static
void
gf_w16_split_8_16_lazy_multiply_region(gf_t *gf, void *src, void *dest, gf_val_32_t val, int bytes, int xor)
@@ -906,6 +964,7 @@
}
gf_do_final_region_alignment(&rd);
}
+#endif
static void
gf_w16_table_lazy_multiply_region(gf_t *gf, void *src, void *dest, gf_val_32_t val, int bytes, int xor)
@@ -948,45 +1007,69 @@
gf_do_final_region_alignment(&rd);
}
+#define SSE_GF_MULTBY_16(x) \
+ x = SSE_GF_MULTBY_TWO(x); \
+ x = SSE_GF_MULTBY_TWO(x); \
+ x = SSE_GF_MULTBY_TWO(x); \
+ x = SSE_GF_MULTBY_TWO(x)
+
static
void
gf_w16_split_4_16_lazy_sse_multiply_region(gf_t *gf, void *src, void *dest, gf_val_32_t val, int bytes, int xor)
{
#ifdef INTEL_SSSE3
- uint64_t i, j, *s64, *d64, *top64;;
- uint64_t c, prod;
- uint8_t low[4][16];
- uint8_t high[4][16];
+ uint64_t *s64, *d64, *top64;;
+ gf_internal_t* h = (gf_internal_t *) gf->scratch;
+ struct gf_w16_logtable_data *ltd = (struct gf_w16_logtable_data *) h->private;
+ int log_val = ltd->log_tbl[val];
gf_region_data rd;
- __m128i mask, ta, tb, ti, tpl, tph, tlow[4], thigh[4], tta, ttb, lmask;
+ __m128i mask, ta, tb, ti, tpl, tph, tta, ttb, lmask;
+ __m128i tlow0, tlow1, tlow2, tlow3, thigh0, thigh1, thigh2, thigh3;
+ uint16_t tmp[8];
if (val == 0) { gf_multby_zero(dest, bytes, xor); return; }
if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; }
gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 32);
- gf_do_initial_region_alignment(&rd);
-
- for (j = 0; j < 16; j++) {
- for (i = 0; i < 4; i++) {
- c = (j << (i*4));
- prod = gf->multiply.w32(gf, c, val);
- low[i][j] = (prod & 0xff);
- high[i][j] = (prod >> 8);
- }
- }
-
- for (i = 0; i < 4; i++) {
- tlow[i] = _mm_loadu_si128((__m128i *)low[i]);
- thigh[i] = _mm_loadu_si128((__m128i *)high[i]);
- }
+ GF_W16_LOG_MULTIPLY_REGION(rd.src, rd.dest, rd.s_start);
+ lmask = _mm_set1_epi16 (0xff);
+
+ tmp[0] = 0;
+ tmp[1] = val;
+ tmp[2] = GF_MULTBY_TWO(val);
+ tmp[3] = tmp[2] ^ val;
+ tmp[4] = GF_MULTBY_TWO(tmp[2]);
+ tmp[5] = tmp[4] ^ val;
+ tmp[6] = tmp[4] ^ tmp[2];
+ tmp[7] = tmp[4] ^ tmp[3];
+
+ #define SWIZZLE_STORE(i, a, b) \
+ tlow ##i = _mm_packus_epi16(_mm_and_si128(a, lmask), _mm_and_si128(b, lmask)); \
+ thigh ##i = _mm_packus_epi16(_mm_srli_epi16(a, 8), _mm_srli_epi16(b, 8))
+
+ ta = _mm_loadu_si128((__m128i*)tmp);
+ tb = _mm_xor_si128(ta, _mm_set1_epi16( GF_MULTBY_TWO(tmp[4]) ));
+ SWIZZLE_STORE(0, ta, tb);
+ /* multiply by 16 */
+ SSE_GF_MULTBY_16(ta);
+ SSE_GF_MULTBY_16(tb);
+ SWIZZLE_STORE(1, ta, tb);
+ SSE_GF_MULTBY_16(ta);
+ SSE_GF_MULTBY_16(tb);
+ SWIZZLE_STORE(2, ta, tb);
+ SSE_GF_MULTBY_16(ta);
+ SSE_GF_MULTBY_16(tb);
+ SWIZZLE_STORE(3, ta, tb);
+
+ #undef SWIZZLE_STORE
+
s64 = (uint64_t *) rd.s_start;
d64 = (uint64_t *) rd.d_start;
top64 = (uint64_t *) rd.d_top;
mask = _mm_set1_epi8 (0x0f);
- lmask = _mm_set1_epi16 (0xff);
if (xor) {
while (d64 != top64) {
@@ -1003,22 +1086,22 @@
ta = _mm_packus_epi16(ttb, tta);
ti = _mm_and_si128 (mask, tb);
- tph = _mm_shuffle_epi8 (thigh[0], ti);
- tpl = _mm_shuffle_epi8 (tlow[0], ti);
+ tph = _mm_shuffle_epi8 (thigh0, ti);
+ tpl = _mm_shuffle_epi8 (tlow0, ti);
tb = _mm_srli_epi16(tb, 4);
ti = _mm_and_si128 (mask, tb);
- tpl = _mm_xor_si128(_mm_shuffle_epi8 (tlow[1], ti), tpl);
- tph = _mm_xor_si128(_mm_shuffle_epi8 (thigh[1], ti), tph);
+ tpl = _mm_xor_si128(_mm_shuffle_epi8 (tlow1, ti), tpl);
+ tph = _mm_xor_si128(_mm_shuffle_epi8 (thigh1, ti), tph);
ti = _mm_and_si128 (mask, ta);
- tpl = _mm_xor_si128(_mm_shuffle_epi8 (tlow[2], ti), tpl);
- tph = _mm_xor_si128(_mm_shuffle_epi8 (thigh[2], ti), tph);
+ tpl = _mm_xor_si128(_mm_shuffle_epi8 (tlow2, ti), tpl);
+ tph = _mm_xor_si128(_mm_shuffle_epi8 (thigh2, ti), tph);
ta = _mm_srli_epi16(ta, 4);
ti = _mm_and_si128 (mask, ta);
- tpl = _mm_xor_si128(_mm_shuffle_epi8 (tlow[3], ti), tpl);
- tph = _mm_xor_si128(_mm_shuffle_epi8 (thigh[3], ti), tph);
+ tpl = _mm_xor_si128(_mm_shuffle_epi8 (tlow3, ti), tpl);
+ tph = _mm_xor_si128(_mm_shuffle_epi8 (thigh3, ti), tph);
ta = _mm_unpackhi_epi8(tpl, tph);
tb = _mm_unpacklo_epi8(tpl, tph);
@@ -1049,22 +1132,22 @@
ta = _mm_packus_epi16(ttb, tta);
ti = _mm_and_si128 (mask, tb);
- tph = _mm_shuffle_epi8 (thigh[0], ti);
- tpl = _mm_shuffle_epi8 (tlow[0], ti);
+ tph = _mm_shuffle_epi8 (thigh0, ti);
+ tpl = _mm_shuffle_epi8 (tlow0, ti);
tb = _mm_srli_epi16(tb, 4);
ti = _mm_and_si128 (mask, tb);
- tpl = _mm_xor_si128(_mm_shuffle_epi8 (tlow[1], ti), tpl);
- tph = _mm_xor_si128(_mm_shuffle_epi8 (thigh[1], ti), tph);
+ tpl = _mm_xor_si128(_mm_shuffle_epi8 (tlow1, ti), tpl);
+ tph = _mm_xor_si128(_mm_shuffle_epi8 (thigh1, ti), tph);
ti = _mm_and_si128 (mask, ta);
- tpl = _mm_xor_si128(_mm_shuffle_epi8 (tlow[2], ti), tpl);
- tph = _mm_xor_si128(_mm_shuffle_epi8 (thigh[2], ti), tph);
+ tpl = _mm_xor_si128(_mm_shuffle_epi8 (tlow2, ti), tpl);
+ tph = _mm_xor_si128(_mm_shuffle_epi8 (thigh2, ti), tph);
ta = _mm_srli_epi16(ta, 4);
ti = _mm_and_si128 (mask, ta);
- tpl = _mm_xor_si128(_mm_shuffle_epi8 (tlow[3], ti), tpl);
- tph = _mm_xor_si128(_mm_shuffle_epi8 (thigh[3], ti), tph);
+ tpl = _mm_xor_si128(_mm_shuffle_epi8 (tlow3, ti), tpl);
+ tph = _mm_xor_si128(_mm_shuffle_epi8 (thigh3, ti), tph);
ta = _mm_unpackhi_epi8(tpl, tph);
tb = _mm_unpacklo_epi8(tpl, tph);
@@ -1077,7 +1160,7 @@
}
}
- gf_do_final_region_alignment(&rd);
+ GF_W16_LOG_MULTIPLY_REGION(rd.s_top, rd.d_top, (uint8_t *)rd.src+rd.bytes);
#endif
}
@@ -1086,32 +1169,51 @@
gf_w16_split_4_16_lazy_sse_altmap_multiply_region(gf_t *gf, void *src, void *dest, gf_val_32_t val, int bytes, int xor)
{
#ifdef INTEL_SSSE3
- uint64_t i, j, *s64, *d64, *top64;;
- uint64_t c, prod;
- uint8_t low[4][16];
- uint8_t high[4][16];
- gf_region_data rd;
- __m128i mask, ta, tb, ti, tpl, tph, tlow[4], thigh[4];
+ uint64_t *s64, *d64, *top64;;
+ gf_internal_t* h = (gf_internal_t *) gf->scratch;
+ struct gf_w16_logtable_data *ltd = (struct gf_w16_logtable_data *) h->private;
+ int log_val = ltd->log_tbl[val];
+ gf_region_data rd;
+ __m128i mask, ta, tb, ti, tpl, tph;
+ __m128i tlow0, tlow1, tlow2, tlow3, thigh0, thigh1, thigh2, thigh3;
+ uint16_t tmp[8];
if (val == 0) { gf_multby_zero(dest, bytes, xor); return; }
if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; }
gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 32);
- gf_do_initial_region_alignment(&rd);
-
- for (j = 0; j < 16; j++) {
- for (i = 0; i < 4; i++) {
- c = (j << (i*4));
- prod = gf->multiply.w32(gf, c, val);
- low[i][j] = (prod & 0xff);
- high[i][j] = (prod >> 8);
- }
- }
+ GF_W16_LOG_MULTIPLY_REGION(rd.src, rd.dest, rd.s_start);
- for (i = 0; i < 4; i++) {
- tlow[i] = _mm_loadu_si128((__m128i *)low[i]);
- thigh[i] = _mm_loadu_si128((__m128i *)high[i]);
- }
+ mask = _mm_set1_epi16 (0xff);
+
+ tmp[0] = 0;
+ tmp[1] = val;
+ tmp[2] = GF_MULTBY_TWO(val);
+ tmp[3] = tmp[2] ^ val;
+ tmp[4] = GF_MULTBY_TWO(tmp[2]);
+ tmp[5] = tmp[4] ^ val;
+ tmp[6] = tmp[4] ^ tmp[2];
+ tmp[7] = tmp[4] ^ tmp[3];
+
+ #define SWIZZLE_STORE(i, a, b) \
+ tlow ##i = _mm_packus_epi16(_mm_and_si128(a, mask), _mm_and_si128(b, mask)); \
+ thigh ##i = _mm_packus_epi16(_mm_srli_epi16(a, 8), _mm_srli_epi16(b, 8))
+
+ ta = _mm_loadu_si128((__m128i*)tmp);
+ tb = _mm_xor_si128(ta, _mm_set1_epi16( GF_MULTBY_TWO(tmp[4]) ));
+ SWIZZLE_STORE(0, ta, tb);
+ /* multiply by 16 */
+ SSE_GF_MULTBY_16(ta);
+ SSE_GF_MULTBY_16(tb);
+ SWIZZLE_STORE(1, ta, tb);
+ SSE_GF_MULTBY_16(ta);
+ SSE_GF_MULTBY_16(tb);
+ SWIZZLE_STORE(2, ta, tb);
+ SSE_GF_MULTBY_16(ta);
+ SSE_GF_MULTBY_16(tb);
+ SWIZZLE_STORE(3, ta, tb);
+
+ #undef SWIZZLE_STORE
s64 = (uint64_t *) rd.s_start;
d64 = (uint64_t *) rd.d_start;
@@ -1126,22 +1228,22 @@
tb = _mm_load_si128((__m128i *) (s64+2));
ti = _mm_and_si128 (mask, tb);
- tph = _mm_shuffle_epi8 (thigh[0], ti);
- tpl = _mm_shuffle_epi8 (tlow[0], ti);
+ tph = _mm_shuffle_epi8 (thigh0, ti);
+ tpl = _mm_shuffle_epi8 (tlow0, ti);
tb = _mm_srli_epi16(tb, 4);
ti = _mm_and_si128 (mask, tb);
- tpl = _mm_xor_si128(_mm_shuffle_epi8 (tlow[1], ti), tpl);
- tph = _mm_xor_si128(_mm_shuffle_epi8 (thigh[1], ti), tph);
+ tpl = _mm_xor_si128(_mm_shuffle_epi8 (tlow1, ti), tpl);
+ tph = _mm_xor_si128(_mm_shuffle_epi8 (thigh1, ti), tph);
ti = _mm_and_si128 (mask, ta);
- tpl = _mm_xor_si128(_mm_shuffle_epi8 (tlow[2], ti), tpl);
- tph = _mm_xor_si128(_mm_shuffle_epi8 (thigh[2], ti), tph);
+ tpl = _mm_xor_si128(_mm_shuffle_epi8 (tlow2, ti), tpl);
+ tph = _mm_xor_si128(_mm_shuffle_epi8 (thigh2, ti), tph);
ta = _mm_srli_epi16(ta, 4);
ti = _mm_and_si128 (mask, ta);
- tpl = _mm_xor_si128(_mm_shuffle_epi8 (tlow[3], ti), tpl);
- tph = _mm_xor_si128(_mm_shuffle_epi8 (thigh[3], ti), tph);
+ tpl = _mm_xor_si128(_mm_shuffle_epi8 (tlow3, ti), tpl);
+ tph = _mm_xor_si128(_mm_shuffle_epi8 (thigh3, ti), tph);
ta = _mm_load_si128((__m128i *) d64);
tph = _mm_xor_si128(tph, ta);
@@ -1160,22 +1262,22 @@
tb = _mm_load_si128((__m128i *) (s64+2));
ti = _mm_and_si128 (mask, tb);
- tph = _mm_shuffle_epi8 (thigh[0], ti);
- tpl = _mm_shuffle_epi8 (tlow[0], ti);
+ tph = _mm_shuffle_epi8 (thigh0, ti);
+ tpl = _mm_shuffle_epi8 (tlow0, ti);
tb = _mm_srli_epi16(tb, 4);
ti = _mm_and_si128 (mask, tb);
- tpl = _mm_xor_si128(_mm_shuffle_epi8 (tlow[1], ti), tpl);
- tph = _mm_xor_si128(_mm_shuffle_epi8 (thigh[1], ti), tph);
+ tpl = _mm_xor_si128(_mm_shuffle_epi8 (tlow1, ti), tpl);
+ tph = _mm_xor_si128(_mm_shuffle_epi8 (thigh1, ti), tph);
ti = _mm_and_si128 (mask, ta);
- tpl = _mm_xor_si128(_mm_shuffle_epi8 (tlow[2], ti), tpl);
- tph = _mm_xor_si128(_mm_shuffle_epi8 (thigh[2], ti), tph);
+ tpl = _mm_xor_si128(_mm_shuffle_epi8 (tlow2, ti), tpl);
+ tph = _mm_xor_si128(_mm_shuffle_epi8 (thigh2, ti), tph);
ta = _mm_srli_epi16(ta, 4);
ti = _mm_and_si128 (mask, ta);
- tpl = _mm_xor_si128(_mm_shuffle_epi8 (tlow[3], ti), tpl);
- tph = _mm_xor_si128(_mm_shuffle_epi8 (thigh[3], ti), tph);
+ tpl = _mm_xor_si128(_mm_shuffle_epi8 (tlow3, ti), tpl);
+ tph = _mm_xor_si128(_mm_shuffle_epi8 (thigh3, ti), tph);
_mm_store_si128 ((__m128i *)d64, tph);
_mm_store_si128 ((__m128i *)(d64+2), tpl);
@@ -1185,7 +1287,7 @@
}
}
- gf_do_final_region_alignment(&rd);
+ GF_W16_LOG_MULTIPLY_REGION(rd.s_top, rd.d_top, (uint8_t *)rd.src+rd.bytes);
#endif
}
@@ -2284,6 +2386,970 @@
return 1;
}
+
+static gf_val_32_t gf_w16_xor_extract_word(gf_t *gf, void *start, int bytes, int index)
+{
+ uint16_t *r16, rv = 0;
+ uint8_t *r8;
+ int i;
+ gf_region_data rd;
+
+ gf_set_region_data(&rd, gf, start, start, bytes, 0, 0, 256);
+ r16 = (uint16_t *) start;
+ if (r16 + index < (uint16_t *) rd.d_start) return r16[index];
+ if (r16 + index >= (uint16_t *) rd.d_top) return r16[index];
+
+ index -= (((uint16_t *) rd.d_start) - r16);
+ r8 = (uint8_t *) rd.d_start;
+ r8 += (index & ~0x7f)*2; /* advance pointer to correct group */
+ r8 += (index >> 3) & 0xF; /* advance to correct byte */
+ for (i=0; i<16; i++) {
+ rv <<= 1;
+ rv |= (*r8 >> (7-(index & 7)) & 1);
+ r8 += 16;
+ }
+ return rv;
+}
+
+
+static void gf_w16_xor_lazy_sse_altmap_multiply_region(gf_t *gf, void *src, void *dest, gf_val_32_t val, int bytes, int xor)
+{
+#ifdef INTEL_SSE2
+ uint64_t i, bit;
+ uint64_t counts[16];
+ uintptr_t deptable[16][16];
+ __m128i depmask1, depmask2, polymask1, polymask2, addvals1, addvals2;
+ uint16_t tmp_depmask[16];
+ gf_region_data rd;
+ gf_internal_t *h = (gf_internal_t *) gf->scratch;
+ struct gf_w16_logtable_data *ltd = (struct gf_w16_logtable_data *) h->private;
+ int log_val = ltd->log_tbl[val];
+ __m128i *dW, *topW;
+ uintptr_t sP;
+
+ if (val == 0) { gf_multby_zero(dest, bytes, xor); return; }
+ if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; }
+
+ gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 256);
+ GF_W16_LOG_MULTIPLY_REGION(rd.src, rd.dest, rd.s_start);
+
+ depmask1 = _mm_setzero_si128();
+ depmask2 = _mm_setzero_si128();
+
+ /* calculate dependent bits */
+ addvals1 = _mm_set_epi16(1<< 7, 1<< 6, 1<< 5, 1<< 4, 1<< 3, 1<< 2, 1<<1, 1<<0);
+ addvals2 = _mm_set_epi16(1<<15, 1<<14, 1<<13, 1<<12, 1<<11, 1<<10, 1<<9, 1<<8);
+
+ /* duplicate each bit in the polynomial 16 times */
+ polymask2 = _mm_set1_epi16(h->prim_poly & 0xFFFF); /* chop off top bit, although not really necessary */
+ polymask1 = _mm_and_si128(polymask2, _mm_set_epi16(1<< 8, 1<< 9, 1<<10, 1<<11, 1<<12, 1<<13, 1<<14, 1<<15));
+ polymask2 = _mm_and_si128(polymask2, _mm_set_epi16(1<< 0, 1<< 1, 1<< 2, 1<< 3, 1<< 4, 1<< 5, 1<< 6, 1<< 7));
+ polymask1 = _mm_cmpeq_epi16(_mm_setzero_si128(), polymask1);
+ polymask2 = _mm_cmpeq_epi16(_mm_setzero_si128(), polymask2);
+
+ if(val & (1<<15)) {
+ /* XOR */
+ depmask1 = _mm_xor_si128(depmask1, addvals1);
+ depmask2 = _mm_xor_si128(depmask2, addvals2);
+ }
+ for(i=(1<<14); i; i>>=1) {
+ /* rotate */
+ __m128i last = _mm_set1_epi16(_mm_extract_epi16(depmask1, 0));
+ depmask1 = _mm_insert_epi16(
+ _mm_srli_si128(depmask1, 2),
+ _mm_extract_epi16(depmask2, 0),
+ 7
+ );
+ depmask2 = _mm_srli_si128(depmask2, 2);
+
+ /* XOR poly */
+ depmask1 = _mm_xor_si128(depmask1, _mm_andnot_si128(polymask1, last));
+ depmask2 = _mm_xor_si128(depmask2, _mm_andnot_si128(polymask2, last));
+
+ if(val & i) {
+ /* XOR */
+ depmask1 = _mm_xor_si128(depmask1, addvals1);
+ depmask2 = _mm_xor_si128(depmask2, addvals2);
+ }
+ }
+
+ /* generate needed tables */
+ _mm_storeu_si128((__m128i*)(tmp_depmask), depmask1);
+ _mm_storeu_si128((__m128i*)(tmp_depmask + 8), depmask2);
+ for(bit=0; bit<16; bit++) {
+ uint64_t cnt = 0;
+ for(i=0; i<16; i++) {
+ if(tmp_depmask[bit] & (1<<i)) {
+ deptable[bit][cnt++] = i<<4; /* pre-multiply because x86 addressing can't do a x16; this saves a shift operation later */
+ }
+ }
+ counts[bit] = cnt;
+ }
+
+
+ sP = (uintptr_t) rd.s_start;
+ dW = (__m128i *) rd.d_start;
+ topW = (__m128i *) rd.d_top;
+
+ if ((sP - (uintptr_t)dW + 256) < 512) {
+ /* urgh, src and dest are in the same block, so we need to store results to a temp location */
+ __m128i dest[16];
+ if (xor)
+ while (dW != topW) {
+ #define STEP(bit, type, typev, typed) { \
+ uintptr_t* deps = deptable[bit]; \
+ dest[bit] = _mm_load_ ## type((typed*)(dW + bit)); \
+ switch(counts[bit]) { \
+ case 16: dest[bit] = _mm_xor_ ## type(dest[bit], *(typev*)(sP + deps[15])); \
+ case 15: dest[bit] = _mm_xor_ ## type(dest[bit], *(typev*)(sP + deps[14])); \
+ case 14: dest[bit] = _mm_xor_ ## type(dest[bit], *(typev*)(sP + deps[13])); \
+ case 13: dest[bit] = _mm_xor_ ## type(dest[bit], *(typev*)(sP + deps[12])); \
+ case 12: dest[bit] = _mm_xor_ ## type(dest[bit], *(typev*)(sP + deps[11])); \
+ case 11: dest[bit] = _mm_xor_ ## type(dest[bit], *(typev*)(sP + deps[10])); \
+ case 10: dest[bit] = _mm_xor_ ## type(dest[bit], *(typev*)(sP + deps[ 9])); \
+ case 9: dest[bit] = _mm_xor_ ## type(dest[bit], *(typev*)(sP + deps[ 8])); \
+ case 8: dest[bit] = _mm_xor_ ## type(dest[bit], *(typev*)(sP + deps[ 7])); \
+ case 7: dest[bit] = _mm_xor_ ## type(dest[bit], *(typev*)(sP + deps[ 6])); \
+ case 6: dest[bit] = _mm_xor_ ## type(dest[bit], *(typev*)(sP + deps[ 5])); \
+ case 5: dest[bit] = _mm_xor_ ## type(dest[bit], *(typev*)(sP + deps[ 4])); \
+ case 4: dest[bit] = _mm_xor_ ## type(dest[bit], *(typev*)(sP + deps[ 3])); \
+ case 3: dest[bit] = _mm_xor_ ## type(dest[bit], *(typev*)(sP + deps[ 2])); \
+ case 2: dest[bit] = _mm_xor_ ## type(dest[bit], *(typev*)(sP + deps[ 1])); \
+ case 1: dest[bit] = _mm_xor_ ## type(dest[bit], *(typev*)(sP + deps[ 0])); \
+ } \
+ }
+ STEP( 0, si128, __m128i, __m128i)
+ STEP( 1, si128, __m128i, __m128i)
+ STEP( 2, si128, __m128i, __m128i)
+ STEP( 3, si128, __m128i, __m128i)
+ STEP( 4, si128, __m128i, __m128i)
+ STEP( 5, si128, __m128i, __m128i)
+ STEP( 6, si128, __m128i, __m128i)
+ STEP( 7, si128, __m128i, __m128i)
+ STEP( 8, si128, __m128i, __m128i)
+ STEP( 9, si128, __m128i, __m128i)
+ STEP(10, si128, __m128i, __m128i)
+ STEP(11, si128, __m128i, __m128i)
+ STEP(12, si128, __m128i, __m128i)
+ STEP(13, si128, __m128i, __m128i)
+ STEP(14, si128, __m128i, __m128i)
+ STEP(15, si128, __m128i, __m128i)
+ #undef STEP
+ /* copy to dest */
+ for(i=0; i<16; i++)
+ _mm_store_si128(dW+i, dest[i]);
+ dW += 16;
+ sP += 256;
+ }
+ else
+ while (dW != topW) {
+ /* Note that we assume that all counts are at least 1; I don't think it's possible for that to be false */
+ #define STEP(bit, type, typev, typed) { \
+ uintptr_t* deps = deptable[bit]; \
+ dest[bit] = _mm_load_ ## type((typed*)(sP + deps[ 0])); \
+ switch(counts[bit]) { \
+ case 16: dest[bit] = _mm_xor_ ## type(dest[bit], *(typev*)(sP + deps[15])); \
+ case 15: dest[bit] = _mm_xor_ ## type(dest[bit], *(typev*)(sP + deps[14])); \
+ case 14: dest[bit] = _mm_xor_ ## type(dest[bit], *(typev*)(sP + deps[13])); \
+ case 13: dest[bit] = _mm_xor_ ## type(dest[bit], *(typev*)(sP + deps[12])); \
+ case 12: dest[bit] = _mm_xor_ ## type(dest[bit], *(typev*)(sP + deps[11])); \
+ case 11: dest[bit] = _mm_xor_ ## type(dest[bit], *(typev*)(sP + deps[10])); \
+ case 10: dest[bit] = _mm_xor_ ## type(dest[bit], *(typev*)(sP + deps[ 9])); \
+ case 9: dest[bit] = _mm_xor_ ## type(dest[bit], *(typev*)(sP + deps[ 8])); \
+ case 8: dest[bit] = _mm_xor_ ## type(dest[bit], *(typev*)(sP + deps[ 7])); \
+ case 7: dest[bit] = _mm_xor_ ## type(dest[bit], *(typev*)(sP + deps[ 6])); \
+ case 6: dest[bit] = _mm_xor_ ## type(dest[bit], *(typev*)(sP + deps[ 5])); \
+ case 5: dest[bit] = _mm_xor_ ## type(dest[bit], *(typev*)(sP + deps[ 4])); \
+ case 4: dest[bit] = _mm_xor_ ## type(dest[bit], *(typev*)(sP + deps[ 3])); \
+ case 3: dest[bit] = _mm_xor_ ## type(dest[bit], *(typev*)(sP + deps[ 2])); \
+ case 2: dest[bit] = _mm_xor_ ## type(dest[bit], *(typev*)(sP + deps[ 1])); \
+ } \
+ }
+ STEP( 0, si128, __m128i, __m128i)
+ STEP( 1, si128, __m128i, __m128i)
+ STEP( 2, si128, __m128i, __m128i)
+ STEP( 3, si128, __m128i, __m128i)
+ STEP( 4, si128, __m128i, __m128i)
+ STEP( 5, si128, __m128i, __m128i)
+ STEP( 6, si128, __m128i, __m128i)
+ STEP( 7, si128, __m128i, __m128i)
+ STEP( 8, si128, __m128i, __m128i)
+ STEP( 9, si128, __m128i, __m128i)
+ STEP(10, si128, __m128i, __m128i)
+ STEP(11, si128, __m128i, __m128i)
+ STEP(12, si128, __m128i, __m128i)
+ STEP(13, si128, __m128i, __m128i)
+ STEP(14, si128, __m128i, __m128i)
+ STEP(15, si128, __m128i, __m128i)
+ #undef STEP
+ /* copy to dest */
+ for(i=0; i<16; i++)
+ _mm_store_si128(dW+i, dest[i]);
+ dW += 16;
+ sP += 256;
+ }
+ } else {
+ if (xor)
+ while (dW != topW) {
+ #define STEP(bit, type, typev, typed) { \
+ uintptr_t* deps = deptable[bit]; \
+ typev tmp = _mm_load_ ## type((typed*)(dW + bit)); \
+ switch(counts[bit]) { \
+ case 16: tmp = _mm_xor_ ## type(tmp, *(typev*)(sP + deps[15])); \
+ case 15: tmp = _mm_xor_ ## type(tmp, *(typev*)(sP + deps[14])); \
+ case 14: tmp = _mm_xor_ ## type(tmp, *(typev*)(sP + deps[13])); \
+ case 13: tmp = _mm_xor_ ## type(tmp, *(typev*)(sP + deps[12])); \
+ case 12: tmp = _mm_xor_ ## type(tmp, *(typev*)(sP + deps[11])); \
+ case 11: tmp = _mm_xor_ ## type(tmp, *(typev*)(sP + deps[10])); \
+ case 10: tmp = _mm_xor_ ## type(tmp, *(typev*)(sP + deps[ 9])); \
+ case 9: tmp = _mm_xor_ ## type(tmp, *(typev*)(sP + deps[ 8])); \
+ case 8: tmp = _mm_xor_ ## type(tmp, *(typev*)(sP + deps[ 7])); \
+ case 7: tmp = _mm_xor_ ## type(tmp, *(typev*)(sP + deps[ 6])); \
+ case 6: tmp = _mm_xor_ ## type(tmp, *(typev*)(sP + deps[ 5])); \
+ case 5: tmp = _mm_xor_ ## type(tmp, *(typev*)(sP + deps[ 4])); \
+ case 4: tmp = _mm_xor_ ## type(tmp, *(typev*)(sP + deps[ 3])); \
+ case 3: tmp = _mm_xor_ ## type(tmp, *(typev*)(sP + deps[ 2])); \
+ case 2: tmp = _mm_xor_ ## type(tmp, *(typev*)(sP + deps[ 1])); \
+ case 1: tmp = _mm_xor_ ## type(tmp, *(typev*)(sP + deps[ 0])); \
+ } \
+ _mm_store_ ## type((typed*)(dW + bit), tmp); \
+ }
+ STEP( 0, si128, __m128i, __m128i)
+ STEP( 1, si128, __m128i, __m128i)
+ STEP( 2, si128, __m128i, __m128i)
+ STEP( 3, si128, __m128i, __m128i)
+ STEP( 4, si128, __m128i, __m128i)
+ STEP( 5, si128, __m128i, __m128i)
+ STEP( 6, si128, __m128i, __m128i)
+ STEP( 7, si128, __m128i, __m128i)
+ STEP( 8, si128, __m128i, __m128i)
+ STEP( 9, si128, __m128i, __m128i)
+ STEP(10, si128, __m128i, __m128i)
+ STEP(11, si128, __m128i, __m128i)
+ STEP(12, si128, __m128i, __m128i)
+ STEP(13, si128, __m128i, __m128i)
+ STEP(14, si128, __m128i, __m128i)
+ STEP(15, si128, __m128i, __m128i)
+ #undef STEP
+ dW += 16;
+ sP += 256;
+ }
+ else
+ while (dW != topW) {
+ /* Note that we assume that all counts are at least 1; I don't think it's possible for that to be false */
+ #define STEP(bit, type, typev, typed) { \
+ uintptr_t* deps = deptable[bit]; \
+ typev tmp = _mm_load_ ## type((typed*)(sP + deps[ 0])); \
+ switch(counts[bit]) { \
+ case 16: tmp = _mm_xor_ ## type(tmp, *(typev*)(sP + deps[15])); \
+ case 15: tmp = _mm_xor_ ## type(tmp, *(typev*)(sP + deps[14])); \
+ case 14: tmp = _mm_xor_ ## type(tmp, *(typev*)(sP + deps[13])); \
+ case 13: tmp = _mm_xor_ ## type(tmp, *(typev*)(sP + deps[12])); \
+ case 12: tmp = _mm_xor_ ## type(tmp, *(typev*)(sP + deps[11])); \
+ case 11: tmp = _mm_xor_ ## type(tmp, *(typev*)(sP + deps[10])); \
+ case 10: tmp = _mm_xor_ ## type(tmp, *(typev*)(sP + deps[ 9])); \
+ case 9: tmp = _mm_xor_ ## type(tmp, *(typev*)(sP + deps[ 8])); \
+ case 8: tmp = _mm_xor_ ## type(tmp, *(typev*)(sP + deps[ 7])); \
+ case 7: tmp = _mm_xor_ ## type(tmp, *(typev*)(sP + deps[ 6])); \
+ case 6: tmp = _mm_xor_ ## type(tmp, *(typev*)(sP + deps[ 5])); \
+ case 5: tmp = _mm_xor_ ## type(tmp, *(typev*)(sP + deps[ 4])); \