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more CYASSL_SMALL_STACK adds for integer.c

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This commit is contained in:
Todd A Ouska
2011-09-27 11:25:50 -07:00
parent 08fd73bbec
commit c8714efc98
1 changed files with 47 additions and 1 deletions
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48
ctaocrypt/src/integer.c
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@@ -2746,7 +2746,12 @@ After that loop you do the squares and add them in.
int fast_s_mp_sqr (mp_int * a, mp_int * b) int fast_s_mp_sqr (mp_int * a, mp_int * b)
{ {
int olduse, res, pa, ix, iz; int olduse, res, pa, ix, iz;
mp_digit W[MP_WARRAY], *tmpx; #ifdef CYASSL_SMALL_STACK
mp_digit* W; /* uses dynamic memory and slower */
#else
mp_digit W[MP_WARRAY];
#endif
mp_digit *tmpx;
mp_word W1; mp_word W1;
/* grow the destination as required */ /* grow the destination as required */
@@ -2757,6 +2762,12 @@ int fast_s_mp_sqr (mp_int * a, mp_int * b)
} }
} }
#ifdef CYASSL_SMALL_STACK
W = (mp_digit*)XMALLOC(sizeof(mp_digit) * MP_WARRAY, 0, DYNAMIC_TYPE_BIGINT);
if (W == NULL)
return MP_MEM;
#endif
/* number of output digits to produce */ /* number of output digits to produce */
W1 = 0; W1 = 0;
for (ix = 0; ix < pa; ix++) { for (ix = 0; ix < pa; ix++) {
@@ -2823,6 +2834,11 @@ int fast_s_mp_sqr (mp_int * a, mp_int * b)
} }
} }
mp_clamp (b); mp_clamp (b);
#ifdef CYASSL_SMALL_STACK
XFREE(W, 0, DYNAMIC_TYPE_BIGINT);
#endif
return MP_OKAY; return MP_OKAY;
} }
@@ -2846,7 +2862,11 @@ int fast_s_mp_sqr (mp_int * a, mp_int * b)
int fast_s_mp_mul_digs (mp_int * a, mp_int * b, mp_int * c, int digs) int fast_s_mp_mul_digs (mp_int * a, mp_int * b, mp_int * c, int digs)
{ {
int olduse, res, pa, ix, iz; int olduse, res, pa, ix, iz;
#ifdef CYASSL_SMALL_STACK
mp_digit* W; /* uses dynamic memory and slower */
#else
mp_digit W[MP_WARRAY]; mp_digit W[MP_WARRAY];
#endif
register mp_word _W; register mp_word _W;
/* grow the destination as required */ /* grow the destination as required */
@@ -2859,6 +2879,12 @@ int fast_s_mp_mul_digs (mp_int * a, mp_int * b, mp_int * c, int digs)
/* number of output digits to produce */ /* number of output digits to produce */
pa = MIN(digs, a->used + b->used); pa = MIN(digs, a->used + b->used);
#ifdef CYASSL_SMALL_STACK
W = (mp_digit*)XMALLOC(sizeof(mp_digit) * MP_WARRAY, 0, DYNAMIC_TYPE_BIGINT);
if (W == NULL)
return MP_MEM;
#endif
/* clear the carry */ /* clear the carry */
_W = 0; _W = 0;
for (ix = 0; ix < pa; ix++) { for (ix = 0; ix < pa; ix++) {
@@ -2910,6 +2936,11 @@ int fast_s_mp_mul_digs (mp_int * a, mp_int * b, mp_int * c, int digs)
} }
} }
mp_clamp (c); mp_clamp (c);
#ifdef CYASSL_SMALL_STACK
XFREE(W, 0, DYNAMIC_TYPE_BIGINT);
#endif
return MP_OKAY; return MP_OKAY;
} }
@@ -3552,7 +3583,11 @@ s_mp_mul_high_digs (mp_int * a, mp_int * b, mp_int * c, int digs)
int fast_s_mp_mul_high_digs (mp_int * a, mp_int * b, mp_int * c, int digs) int fast_s_mp_mul_high_digs (mp_int * a, mp_int * b, mp_int * c, int digs)
{ {
int olduse, res, pa, ix, iz; int olduse, res, pa, ix, iz;
#ifdef CYASSL_SMALL_STACK
mp_digit* W; /* uses dynamic memory and slower */
#else
mp_digit W[MP_WARRAY]; mp_digit W[MP_WARRAY];
#endif
mp_word _W; mp_word _W;
/* grow the destination as required */ /* grow the destination as required */
@@ -3563,6 +3598,12 @@ int fast_s_mp_mul_high_digs (mp_int * a, mp_int * b, mp_int * c, int digs)
} }
} }
#ifdef CYASSL_SMALL_STACK
W = (mp_digit*)XMALLOC(sizeof(mp_digit) * MP_WARRAY, 0, DYNAMIC_TYPE_BIGINT);
if (W == NULL)
return MP_MEM;
#endif
/* number of output digits to produce */ /* number of output digits to produce */
pa = a->used + b->used; pa = a->used + b->used;
_W = 0; _W = 0;
@@ -3614,6 +3655,11 @@ int fast_s_mp_mul_high_digs (mp_int * a, mp_int * b, mp_int * c, int digs)
} }
} }
mp_clamp (c); mp_clamp (c);
#ifdef CYASSL_SMALL_STACK
XFREE(W, 0, DYNAMIC_TYPE_BIGINT);
#endif
return MP_OKAY; return MP_OKAY;
} }