summaryrefslogtreecommitdiffstats
path: root/old/botan/src/math/bigint/mp_generic
diff options
context:
space:
mode:
authorDavid Clark <david.a.clark@nokia.com>2010-11-18 16:20:48 +1000
committerDavid Clark <david.a.clark@nokia.com>2010-11-18 16:20:48 +1000
commitc223232bc15106750da632598047a35ad3762723 (patch)
tree403f7aa2c3a5a912edce6feae869046c89d29178 /old/botan/src/math/bigint/mp_generic
parentb984b0b62076067f1f75db5a7eda5aaa2cdaad2a (diff)
Mark repository as deprecatedHEADmaster
Diffstat (limited to 'old/botan/src/math/bigint/mp_generic')
-rw-r--r--old/botan/src/math/bigint/mp_generic/info.txt8
-rw-r--r--old/botan/src/math/bigint/mp_generic/mp_asm.h54
-rw-r--r--old/botan/src/math/bigint/mp_generic/mp_asmi.h191
3 files changed, 253 insertions, 0 deletions
diff --git a/old/botan/src/math/bigint/mp_generic/info.txt b/old/botan/src/math/bigint/mp_generic/info.txt
new file mode 100644
index 0000000..8bf75fe
--- /dev/null
+++ b/old/botan/src/math/bigint/mp_generic/info.txt
@@ -0,0 +1,8 @@
+realname "MPI Core (C++)"
+
+load_on dep
+
+<add>
+mp_asm.h
+mp_asmi.h
+</add>
diff --git a/old/botan/src/math/bigint/mp_generic/mp_asm.h b/old/botan/src/math/bigint/mp_generic/mp_asm.h
new file mode 100644
index 0000000..7c18343
--- /dev/null
+++ b/old/botan/src/math/bigint/mp_generic/mp_asm.h
@@ -0,0 +1,54 @@
+/*
+* Lowest Level MPI Algorithms
+* (C) 1999-2008 Jack Lloyd
+* 2006 Luca Piccarreta
+*
+* Distributed under the terms of the Botan license
+*/
+
+#ifndef BOTAN_MP_ASM_H__
+#define BOTAN_MP_ASM_H__
+
+#include <botan/mp_types.h>
+
+#if (BOTAN_MP_WORD_BITS == 8)
+ typedef Botan::u16bit dword;
+#elif (BOTAN_MP_WORD_BITS == 16)
+ typedef Botan::u32bit dword;
+#elif (BOTAN_MP_WORD_BITS == 32)
+ typedef Botan::u64bit dword;
+#elif (BOTAN_MP_WORD_BITS == 64)
+ #error BOTAN_MP_WORD_BITS can be 64 only with assembly support
+#else
+ #error BOTAN_MP_WORD_BITS must be 8, 16, 32, or 64
+#endif
+
+namespace Botan {
+
+extern "C" {
+
+/*
+* Word Multiply/Add
+*/
+inline word word_madd2(word a, word b, word* c)
+ {
+ 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)
+ {
+ dword z = (dword)a * b + c + *d;
+ *d = (word)(z >> BOTAN_MP_WORD_BITS);
+ return (word)z;
+ }
+
+}
+
+}
+
+#endif
diff --git a/old/botan/src/math/bigint/mp_generic/mp_asmi.h b/old/botan/src/math/bigint/mp_generic/mp_asmi.h
new file mode 100644
index 0000000..21c4db2
--- /dev/null
+++ b/old/botan/src/math/bigint/mp_generic/mp_asmi.h
@@ -0,0 +1,191 @@
+/*
+* Lowest Level MPI Algorithms
+* (C) 1999-2008 Jack Lloyd
+* 2006 Luca Piccarreta
+*
+* Distributed under the terms of the Botan license
+*/
+
+#ifndef BOTAN_MP_ASM_INTERNAL_H__
+#define BOTAN_MP_ASM_INTERNAL_H__
+
+#include <botan/mp_asm.h>
+
+namespace Botan {
+
+extern "C" {
+
+/*
+* Word Addition
+*/
+inline word word_add(word x, word y, word* carry)
+ {
+ word z = x + y;
+ word c1 = (z < x);
+ z += *carry;
+ *carry = c1 | (z < *carry);
+ return z;
+ }
+
+/*
+* Eight Word Block Addition, Two Argument
+*/
+inline word word8_add2(word x[8], const word y[8], word carry)
+ {
+ x[0] = word_add(x[0], y[0], &carry);
+ x[1] = word_add(x[1], y[1], &carry);
+ x[2] = word_add(x[2], y[2], &carry);
+ x[3] = word_add(x[3], y[3], &carry);
+ x[4] = word_add(x[4], y[4], &carry);
+ x[5] = word_add(x[5], y[5], &carry);
+ x[6] = word_add(x[6], y[6], &carry);
+ x[7] = word_add(x[7], y[7], &carry);
+ return carry;
+ }
+
+/*
+* Eight Word Block Addition, Three Argument
+*/
+inline word word8_add3(word z[8], const word x[8],
+ const word y[8], word carry)
+ {
+ z[0] = word_add(x[0], y[0], &carry);
+ z[1] = word_add(x[1], y[1], &carry);
+ z[2] = word_add(x[2], y[2], &carry);
+ z[3] = word_add(x[3], y[3], &carry);
+ z[4] = word_add(x[4], y[4], &carry);
+ z[5] = word_add(x[5], y[5], &carry);
+ z[6] = word_add(x[6], y[6], &carry);
+ z[7] = word_add(x[7], y[7], &carry);
+ return carry;
+ }
+
+/*
+* Word Subtraction
+*/
+inline word word_sub(word x, word y, word* carry)
+ {
+ word t0 = x - y;
+ word c1 = (t0 > x);
+ word z = t0 - *carry;
+ *carry = c1 | (z > t0);
+ return z;
+ }
+
+/*
+* Eight Word Block Subtraction, Two Argument
+*/
+inline word word8_sub2(word x[4], const word y[4], word carry)
+ {
+ x[0] = word_sub(x[0], y[0], &carry);
+ x[1] = word_sub(x[1], y[1], &carry);
+ x[2] = word_sub(x[2], y[2], &carry);
+ x[3] = word_sub(x[3], y[3], &carry);
+ x[4] = word_sub(x[4], y[4], &carry);
+ x[5] = word_sub(x[5], y[5], &carry);
+ x[6] = word_sub(x[6], y[6], &carry);
+ x[7] = word_sub(x[7], y[7], &carry);
+ return carry;
+ }
+
+/*
+* Eight Word Block Subtraction, Three Argument
+*/
+inline word word8_sub3(word z[8], const word x[8],
+ const word y[8], word carry)
+ {
+ z[0] = word_sub(x[0], y[0], &carry);
+ z[1] = word_sub(x[1], y[1], &carry);
+ z[2] = word_sub(x[2], y[2], &carry);
+ z[3] = word_sub(x[3], y[3], &carry);
+ z[4] = word_sub(x[4], y[4], &carry);
+ z[5] = word_sub(x[5], y[5], &carry);
+ z[6] = word_sub(x[6], y[6], &carry);
+ z[7] = word_sub(x[7], y[7], &carry);
+ return carry;
+ }
+
+/*
+* Eight Word Block Linear Multiplication
+*/
+inline word word8_linmul2(word x[4], word y, word 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;
+ }
+
+/*
+* Eight Word Block Linear Multiplication
+*/
+inline word word8_linmul3(word z[8], const word x[8], word y, word 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;
+ }
+
+/*
+* Eight Word Block Multiply/Add
+*/
+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);
+ 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;
+ }
+
+/*
+* Multiply-Add Accumulator
+*/
+inline void word3_muladd(word* w2, word* w1, word* w0, word a, word b)
+ {
+ word carry = *w0;
+ *w0 = word_madd2(a, b, &carry);
+ *w1 += carry;
+ *w2 += (*w1 < carry) ? 1 : 0;
+ }
+
+/*
+* Multiply-Add Accumulator
+*/
+inline void word3_muladd_2(word* w2, word* w1, word* w0, word a, word b)
+ {
+ word carry = 0;
+ a = word_madd2(a, b, &carry);
+ b = carry;
+
+ word top = (b >> (BOTAN_MP_WORD_BITS-1));
+ b <<= 1;
+ b |= (a >> (BOTAN_MP_WORD_BITS-1));
+ a <<= 1;
+
+ carry = 0;
+ *w0 = word_add(*w0, a, &carry);
+ *w1 = word_add(*w1, b, &carry);
+ *w2 = word_add(*w2, top, &carry);
+ }
+
+}
+
+}
+
+#endif