diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/mp_asm.h | 23 | ||||
| -rw-r--r-- | include/mp_asmi.h | 48 |
2 files changed, 39 insertions, 32 deletions
diff --git a/include/mp_asm.h b/include/mp_asm.h index 5f0747d88..1166d9c8d 100644 --- a/include/mp_asm.h +++ b/include/mp_asm.h @@ -27,20 +27,20 @@ extern "C" { /************************************************* * Word Multiply/Add * *************************************************/ -inline word word_madd2(word a, word b, word c, word* carry) +inline word word_madd2(word a, word b, word* c) { - dword z = (dword)a * b + c; - *carry = (word)(z >> BOTAN_MP_WORD_BITS); + dword z = (dword)a * b + *c; + *c = (word)(z >> BOTAN_MP_WORD_BITS); return (word)z; } /************************************************* * Word Multiply/Add * *************************************************/ -inline word word_madd3(word a, word b, word c, word d, word* carry) +inline word word_madd3(word a, word b, word c, word *d) { - dword z = (dword)a * b + c + d; - *carry = (word)(z >> BOTAN_MP_WORD_BITS); + dword z = (dword)a * b + c + *d; + *d = (word)(z >> BOTAN_MP_WORD_BITS); return (word)z; } @@ -49,7 +49,11 @@ inline word word_madd3(word a, word b, word c, word d, word* carry) *************************************************/ inline void word3_muladd(word* w2, word* w1, word* w0, word a, word b) { - *w0 = word_madd2(a, b, *w0, &b); + dword z = (dword)a * b + *w0; + + b = (word)(z >> BOTAN_MP_WORD_BITS); + *w0 = (word)z; + *w1 += b; *w2 += (*w1 < b) ? 1 : 0; } @@ -59,7 +63,10 @@ inline void word3_muladd(word* w2, word* w1, word* w0, word a, word b) *************************************************/ inline void word3_muladd_2(word* w2, word* w1, word* w0, word a, word b) { - a = word_madd2(a, b, 0, &b); + dword z = (dword)a * b; + + b = (word)(z >> BOTAN_MP_WORD_BITS); + a = (word)z; *w0 += a; *w1 += b + ((*w0 < a) ? 1 : 0); diff --git a/include/mp_asmi.h b/include/mp_asmi.h index b05199d0a..70e25d07b 100644 --- a/include/mp_asmi.h +++ b/include/mp_asmi.h @@ -107,14 +107,14 @@ inline word word8_sub3(word z[8], const word x[8], *************************************************/ inline word word8_linmul2(word x[4], word y, word carry) { - x[0] = word_madd2(x[0], y, carry, &carry); - x[1] = word_madd2(x[1], y, carry, &carry); - x[2] = word_madd2(x[2], y, carry, &carry); - x[3] = word_madd2(x[3], y, carry, &carry); - x[4] = word_madd2(x[4], y, carry, &carry); - x[5] = word_madd2(x[5], y, carry, &carry); - x[6] = word_madd2(x[6], y, carry, &carry); - x[7] = word_madd2(x[7], y, carry, &carry); + x[0] = word_madd2(x[0], y, &carry); + x[1] = word_madd2(x[1], y, &carry); + x[2] = word_madd2(x[2], y, &carry); + x[3] = word_madd2(x[3], y, &carry); + x[4] = word_madd2(x[4], y, &carry); + x[5] = word_madd2(x[5], y, &carry); + x[6] = word_madd2(x[6], y, &carry); + x[7] = word_madd2(x[7], y, &carry); return carry; } @@ -123,14 +123,14 @@ inline word word8_linmul2(word x[4], word y, word carry) *************************************************/ inline word word8_linmul3(word z[8], const word x[8], word y, word carry) { - z[0] = word_madd2(x[0], y, carry, &carry); - z[1] = word_madd2(x[1], y, carry, &carry); - z[2] = word_madd2(x[2], y, carry, &carry); - z[3] = word_madd2(x[3], y, carry, &carry); - z[4] = word_madd2(x[4], y, carry, &carry); - z[5] = word_madd2(x[5], y, carry, &carry); - z[6] = word_madd2(x[6], y, carry, &carry); - z[7] = word_madd2(x[7], y, carry, &carry); + z[0] = word_madd2(x[0], y, &carry); + z[1] = word_madd2(x[1], y, &carry); + z[2] = word_madd2(x[2], y, &carry); + z[3] = word_madd2(x[3], y, &carry); + z[4] = word_madd2(x[4], y, &carry); + z[5] = word_madd2(x[5], y, &carry); + z[6] = word_madd2(x[6], y, &carry); + z[7] = word_madd2(x[7], y, &carry); return carry; } @@ -139,14 +139,14 @@ inline word word8_linmul3(word z[8], const word x[8], word y, word carry) *************************************************/ inline word word8_madd3(word z[8], const word x[8], word y, word carry) { - z[0] = word_madd3(x[0], y, z[0], carry, &carry); - z[1] = word_madd3(x[1], y, z[1], carry, &carry); - z[2] = word_madd3(x[2], y, z[2], carry, &carry); - z[3] = word_madd3(x[3], y, z[3], carry, &carry); - z[4] = word_madd3(x[4], y, z[4], carry, &carry); - z[5] = word_madd3(x[5], y, z[5], carry, &carry); - z[6] = word_madd3(x[6], y, z[6], carry, &carry); - z[7] = word_madd3(x[7], y, z[7], carry, &carry); + z[0] = word_madd3(x[0], y, z[0], &carry); + z[1] = word_madd3(x[1], y, z[1], &carry); + z[2] = word_madd3(x[2], y, z[2], &carry); + z[3] = word_madd3(x[3], y, z[3], &carry); + z[4] = word_madd3(x[4], y, z[4], &carry); + z[5] = word_madd3(x[5], y, z[5], &carry); + z[6] = word_madd3(x[6], y, z[6], &carry); + z[7] = word_madd3(x[7], y, z[7], &carry); return carry; } |