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Move to 256 sized buffers and don't risk overwrite by using only 127 mask.

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This commit is contained in:
Con Kolivas 2011-08-17 16:07:15 +10:00
parent 52e521a7c1
commit cf54f9b850
5 changed files with 26 additions and 25 deletions
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6
findnonce.c
View File

@ -181,14 +181,14 @@ static void *postcalc_hash(void *userdata)
pthread_detach(pthread_self());
cycle:
while (entry < OUTBUFFERS) {
while (entry < FOUND) {
if (pcd->res[entry]) {
nonce = pcd->res[entry++];
break;
}
entry++;
}
if (entry == OUTBUFFERS)
if (entry == FOUND)
goto out;
A = blk->cty_a; B = blk->cty_b;
@ -231,7 +231,7 @@ cycle:
hw_errors++;
thr->cgpu->hw_errors++;
}
if (entry < OUTBUFFERS)
if (entry < FOUND)
goto cycle;
out:
free(pcd);

7
findnonce.h
View File

@ -5,9 +5,10 @@
#define MAXTHREADS (0xFFFFFFFEULL)
/* Maximum worksize 4k to match page size */
#define MAXBUFFERS (4095)
#define BUFFERSIZE (sizeof(uint32_t) * (MAXBUFFERS + 1))
#define OUTBUFFERS (0xFF)
#define MAXBUFFERS (0xFF)
#define BUFFERSIZE (sizeof(uint32_t) * MAXBUFFERS)
#define FOUND (0x80)
/* #define NFLAG (0x7F) Just for reference */
#ifdef HAVE_OPENCL
extern void precalc_hash(dev_blk_ctx *blk, uint32_t *state, uint32_t *data);

2
main.c
View File

@ -3610,7 +3610,7 @@ static void *gpuminer_thread(void *userdata)
{ applog(LOG_ERR, "Error: clSetKernelArg of all params failed."); goto out; }
/* MAXBUFFERS entry is used as a flag to say nonces exist */
if (res[MAXBUFFERS]) {
if (res[FOUND]) {
/* Clear the buffer again */
status = clEnqueueWriteBuffer(clState->commandQueue, clState->outputBuffer, CL_FALSE, 0,
BUFFERSIZE, blank_res, 0, NULL, NULL);

20
phatk110816.cl
View File

@ -387,42 +387,42 @@ void search( const uint state0, const uint state1, const uint state2, const uint
u v = W[117] + W[108] + Vals[3] + Vals[7] + P2(124) + P1(124) + Ch((Vals[0] + Vals[4]) + (K[59] + W(59+64)) + s1(64+59)+ ch(59+64),Vals[1],Vals[2]);
u g = -(K[60] + H[7]) - S1((Vals[0] + Vals[4]) + (K[59] + W(59+64)) + s1(64+59)+ ch(59+64));
#define NFLAG (0xFF)
#define FOUND (0x80)
#define NFLAG (0x7F)
#ifdef VECTORS4
if (v.x == g.x)
{
output[MAXBUFFERS] = output[NFLAG & W[3].x] = W[3].x;
output[FOUND] = output[NFLAG & W[3].x] = W[3].x;
}
if (v.y == g.y)
{
output[MAXBUFFERS] = output[NFLAG & W[3].y] = W[3].y;
output[FOUND] = output[NFLAG & W[3].y] = W[3].y;
}
if (v.z == g.z)
{
output[MAXBUFFERS] = output[NFLAG & W[3].z] = W[3].z;
output[FOUND] = output[NFLAG & W[3].z] = W[3].z;
}
if (v.w == g.w)
{
output[MAXBUFFERS] = output[NFLAG & W[3].w] = W[3].w;
output[FOUND] = output[NFLAG & W[3].w] = W[3].w;
}
#else
#ifdef VECTORS2
if (v.x == g.x)
{
output[MAXBUFFERS] = output[NFLAG & W[3].x] = W[3].x;
output[FOUND] = output[NFLAG & W[3].x] = W[3].x;
}
if (v.y == g.y)
{
output[MAXBUFFERS] = output[NFLAG & W[3].y] = W[3].y;
output[FOUND] = output[NFLAG & W[3].y] = W[3].y;
}
#else
if (v == g)
{
output[MAXBUFFERS] = output[NFLAG & W[3]] = W[3];
output[FOUND] = output[NFLAG & W[3]] = W[3];
}
#endif
#endif
}

16
poclbm110816.cl
View File

@ -625,32 +625,32 @@ __kernel void search( const uint state0, const uint state1, const uint state2, c
Vals[7] = Vals[7] + Vals[3] + (rotr(Vals[0], 6) ^ rotr(Vals[0], 11) ^ rotr(Vals[0], 25)) + ch(Vals[0], Vals[1], Vals[2]) + K[60] + W[12];
#define MAXBUFFERS (4095)
#define NFLAG (0xFF)
#define FOUND (0x80)
#define NFLAG (0x7F)
#if defined(VECTORS4) || defined(VECTORS2)
if (Vals[7].x == -0x5be0cd19U)
{
output[MAXBUFFERS] = output[NFLAG & nonce.x] = nonce.x;
output[FOUND] = output[NFLAG & nonce.x] = nonce.x;
}
if (Vals[7].y == -0x5be0cd19U)
{
output[MAXBUFFERS] = output[NFLAG & nonce.y] = nonce.y;
output[FOUND] = output[NFLAG & nonce.y] = nonce.y;
}
#ifdef VECTORS4
if (Vals[7].z == -0x5be0cd19U)
{
output[MAXBUFFERS] = output[NFLAG & nonce.z] = nonce.z;
output[FOUND] = output[NFLAG & nonce.z] = nonce.z;
}
if (Vals[7].w == -0x5be0cd19U)
{
output[MAXBUFFERS] = output[NFLAG & nonce.w] = nonce.w;
output[FOUND] = output[NFLAG & nonce.w] = nonce.w;
}
#endif
#else
if (Vals[7] == -0x5be0cd19U)
{
output[MAXBUFFERS] = output[NFLAG & nonce] = nonce;
output[FOUND] = output[NFLAG & nonce] = nonce;
}
#endif
}
}