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Tweak the SP x86_64 ECC assembly

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Put back fixes undone in previous commits:
 - Fix casting warning in SP when mp_digit < sp_digit
 - SP fix check for NULL in EC point_new
This commit is contained in:
Sean Parkinson
2020-04-06 11:02:30 +10:00
parent 9a1687d00e
commit 7dad0d3965
8 changed files with 251 additions and 248 deletions
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wolfcrypt/src/sp_cortexm.c
+17 -17
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@@ -4297,10 +4297,10 @@ static int sp_2048_to_mp(const sp_digit* a, mp_int* r)
r->dp[0] = 0;
for (i = 0; i < 64; i++) {
r->dp[j] |= a[i] << s;
r->dp[j] |= (mp_digit)(a[i] << s);
r->dp[j] &= (1L << DIGIT_BIT) - 1;
s = DIGIT_BIT - s;
r->dp[++j] = a[i] >> s;
r->dp[++j] = (mp_digit)(a[i] >> s);
while (s + DIGIT_BIT <= 32) {
s += DIGIT_BIT;
r->dp[j++] &= (1L << DIGIT_BIT) - 1;
@@ -4308,7 +4308,7 @@ static int sp_2048_to_mp(const sp_digit* a, mp_int* r)
r->dp[j] = 0;
}
else {
r->dp[j] = a[i] >> s;
r->dp[j] = (mp_digit)(a[i] >> s);
}
}
s = 32 - s;
@@ -8889,10 +8889,10 @@ static int sp_3072_to_mp(const sp_digit* a, mp_int* r)
r->dp[0] = 0;
for (i = 0; i < 96; i++) {
r->dp[j] |= a[i] << s;
r->dp[j] |= (mp_digit)(a[i] << s);
r->dp[j] &= (1L << DIGIT_BIT) - 1;
s = DIGIT_BIT - s;
r->dp[++j] = a[i] >> s;
r->dp[++j] = (mp_digit)(a[i] >> s);
while (s + DIGIT_BIT <= 32) {
s += DIGIT_BIT;
r->dp[j++] &= (1L << DIGIT_BIT) - 1;
@@ -8900,7 +8900,7 @@ static int sp_3072_to_mp(const sp_digit* a, mp_int* r)
r->dp[j] = 0;
}
else {
r->dp[j] = a[i] >> s;
r->dp[j] = (mp_digit)(a[i] >> s);
}
}
s = 32 - s;
@@ -12428,10 +12428,10 @@ static int sp_4096_to_mp(const sp_digit* a, mp_int* r)
r->dp[0] = 0;
for (i = 0; i < 128; i++) {
r->dp[j] |= a[i] << s;
r->dp[j] |= (mp_digit)(a[i] << s);
r->dp[j] &= (1L << DIGIT_BIT) - 1;
s = DIGIT_BIT - s;
r->dp[++j] = a[i] >> s;
r->dp[++j] = (mp_digit)(a[i] >> s);
while (s + DIGIT_BIT <= 32) {
s += DIGIT_BIT;
r->dp[j++] &= (1L << DIGIT_BIT) - 1;
@@ -12439,7 +12439,7 @@ static int sp_4096_to_mp(const sp_digit* a, mp_int* r)
r->dp[j] = 0;
}
else {
r->dp[j] = a[i] >> s;
r->dp[j] = (mp_digit)(a[i] >> s);
}
}
s = 32 - s;
@@ -13587,7 +13587,7 @@ static int sp_256_point_new_ex_8(void* heap, sp_point_256* sp, sp_point_256** p)
#else
*p = sp;
#endif
if (p == NULL) {
if (*p == NULL) {
ret = MEMORY_E;
}
return ret;
@@ -13810,10 +13810,10 @@ static int sp_256_to_mp(const sp_digit* a, mp_int* r)
r->dp[0] = 0;
for (i = 0; i < 8; i++) {
r->dp[j] |= a[i] << s;
r->dp[j] |= (mp_digit)(a[i] << s);
r->dp[j] &= (1L << DIGIT_BIT) - 1;
s = DIGIT_BIT - s;
r->dp[++j] = a[i] >> s;
r->dp[++j] = (mp_digit)(a[i] >> s);
while (s + DIGIT_BIT <= 32) {
s += DIGIT_BIT;
r->dp[j++] &= (1L << DIGIT_BIT) - 1;
@@ -13821,7 +13821,7 @@ static int sp_256_to_mp(const sp_digit* a, mp_int* r)
r->dp[j] = 0;
}
else {
r->dp[j] = a[i] >> s;
r->dp[j] = (mp_digit)(a[i] >> s);
}
}
s = 32 - s;
@@ -20048,7 +20048,7 @@ static int sp_384_point_new_ex_12(void* heap, sp_point_384* sp, sp_point_384** p
#else
*p = sp;
#endif
if (p == NULL) {
if (*p == NULL) {
ret = MEMORY_E;
}
return ret;
@@ -20302,10 +20302,10 @@ static int sp_384_to_mp(const sp_digit* a, mp_int* r)
r->dp[0] = 0;
for (i = 0; i < 12; i++) {
r->dp[j] |= a[i] << s;
r->dp[j] |= (mp_digit)(a[i] << s);
r->dp[j] &= (1L << DIGIT_BIT) - 1;
s = DIGIT_BIT - s;
r->dp[++j] = a[i] >> s;
r->dp[++j] = (mp_digit)(a[i] >> s);
while (s + DIGIT_BIT <= 32) {
s += DIGIT_BIT;
r->dp[j++] &= (1L << DIGIT_BIT) - 1;
@@ -20313,7 +20313,7 @@ static int sp_384_to_mp(const sp_digit* a, mp_int* r)
r->dp[j] = 0;
}
else {
r->dp[j] = a[i] >> s;
r->dp[j] = (mp_digit)(a[i] >> s);
}
}
s = 32 - s;