From 45c4fcfce66d894dda6b1d29a92fa47515b944af Mon Sep 17 00:00:00 2001 From: lloyd Date: Sun, 28 Sep 2008 23:59:53 +0000 Subject: More headers (loadstore, mem_ops, rotate, types) for util module --- include/loadstor.h | 279 ----------------------------------------------------- 1 file changed, 279 deletions(-) delete mode 100644 include/loadstor.h (limited to 'include/loadstor.h') diff --git a/include/loadstor.h b/include/loadstor.h deleted file mode 100644 index 0bcafe411..000000000 --- a/include/loadstor.h +++ /dev/null @@ -1,279 +0,0 @@ -/************************************************* -* Load/Store Operators Header File * -* (C) 1999-2007 Jack Lloyd * -* 2007 Yves Jerschow * -*************************************************/ - -#ifndef BOTAN_LOAD_STORE_H__ -#define BOTAN_LOAD_STORE_H__ - -#include -#include -#include - -#if BOTAN_TARGET_UNALIGNED_LOADSTOR_OK - -#if defined(BOTAN_TARGET_CPU_IS_BIG_ENDIAN) - -#define BOTAN_ENDIAN_N2B(x) (x) -#define BOTAN_ENDIAN_B2N(x) (x) - -#define BOTAN_ENDIAN_N2L(x) reverse_bytes(x) -#define BOTAN_ENDIAN_L2N(x) reverse_bytes(x) - -#elif defined(BOTAN_TARGET_CPU_IS_LITTLE_ENDIAN) - -#define BOTAN_ENDIAN_N2L(x) (x) -#define BOTAN_ENDIAN_L2N(x) (x) - -#define BOTAN_ENDIAN_N2B(x) reverse_bytes(x) -#define BOTAN_ENDIAN_B2N(x) reverse_bytes(x) - -#endif - -#endif - -namespace Botan { - -/************************************************* -* Byte Extraction Function * -*************************************************/ -template inline byte get_byte(u32bit byte_num, T input) - { - return (input >> ((sizeof(T)-1-(byte_num&(sizeof(T)-1))) << 3)); - } - -/************************************************* -* Byte to Word Conversions * -*************************************************/ -inline u16bit make_u16bit(byte i0, byte i1) - { - return ((static_cast(i0) << 8) | i1); - } - -inline u32bit make_u32bit(byte i0, byte i1, byte i2, byte i3) - { - return ((static_cast(i0) << 24) | - (static_cast(i1) << 16) | - (static_cast(i2) << 8) | - (static_cast(i3))); - } - -inline u64bit make_u64bit(byte i0, byte i1, byte i2, byte i3, - byte i4, byte i5, byte i6, byte i7) - { - return ((static_cast(i0) << 56) | - (static_cast(i1) << 48) | - (static_cast(i2) << 40) | - (static_cast(i3) << 32) | - (static_cast(i4) << 24) | - (static_cast(i5) << 16) | - (static_cast(i6) << 8) | - (static_cast(i7))); - } - -/************************************************* -* Endian-Specific Word Loading Operations * -*************************************************/ -template -inline T load_be(const byte in[], u32bit off) - { - in += off * sizeof(T); - T out = 0; - for(u32bit j = 0; j != sizeof(T); j++) - out = (out << 8) | in[j]; - return out; - } - -template -inline T load_le(const byte in[], u32bit off) - { - in += off * sizeof(T); - T out = 0; - for(u32bit j = 0; j != sizeof(T); j++) - out = (out << 8) | in[sizeof(T)-1-j]; - return out; - } - -template<> -inline u16bit load_be(const byte in[], u32bit off) - { -#if BOTAN_TARGET_UNALIGNED_LOADSTOR_OK - return BOTAN_ENDIAN_N2B(*(reinterpret_cast(in) + off)); -#else - in += off * sizeof(u16bit); - return make_u16bit(in[0], in[1]); -#endif - } - -template<> -inline u16bit load_le(const byte in[], u32bit off) - { -#if BOTAN_TARGET_UNALIGNED_LOADSTOR_OK - return BOTAN_ENDIAN_N2L(*(reinterpret_cast(in) + off)); -#else - in += off * sizeof(u16bit); - return make_u16bit(in[1], in[0]); -#endif - } - -template<> -inline u32bit load_be(const byte in[], u32bit off) - { -#if BOTAN_TARGET_UNALIGNED_LOADSTOR_OK - return BOTAN_ENDIAN_N2B(*(reinterpret_cast(in) + off)); -#else - in += off * sizeof(u32bit); - return make_u32bit(in[0], in[1], in[2], in[3]); -#endif - } - -template<> -inline u32bit load_le(const byte in[], u32bit off) - { -#if BOTAN_TARGET_UNALIGNED_LOADSTOR_OK - return BOTAN_ENDIAN_N2L(*(reinterpret_cast(in) + off)); -#else - in += off * sizeof(u32bit); - return make_u32bit(in[3], in[2], in[1], in[0]); -#endif - } - -template<> -inline u64bit load_be(const byte in[], u32bit off) - { -#if BOTAN_TARGET_UNALIGNED_LOADSTOR_OK - return BOTAN_ENDIAN_N2B(*(reinterpret_cast(in) + off)); -#else - in += off * sizeof(u64bit); - return make_u64bit(in[0], in[1], in[2], in[3], - in[4], in[5], in[6], in[7]); -#endif - } - -template<> -inline u64bit load_le(const byte in[], u32bit off) - { -#if BOTAN_TARGET_UNALIGNED_LOADSTOR_OK - return BOTAN_ENDIAN_N2L(*(reinterpret_cast(in) + off)); -#else - in += off * sizeof(u64bit); - return make_u64bit(in[7], in[6], in[5], in[4], - in[3], in[2], in[1], in[0]); -#endif - } - -/************************************************* -* Endian-Specific Word Storing Operations * -*************************************************/ -inline void store_be(u16bit in, byte out[2]) - { -#if BOTAN_TARGET_UNALIGNED_LOADSTOR_OK - *reinterpret_cast(out) = BOTAN_ENDIAN_B2N(in); -#else - out[0] = get_byte(0, in); - out[1] = get_byte(1, in); -#endif - } - -inline void store_le(u16bit in, byte out[2]) - { -#if BOTAN_TARGET_UNALIGNED_LOADSTOR_OK - *reinterpret_cast(out) = BOTAN_ENDIAN_L2N(in); -#else - out[0] = get_byte(1, in); - out[1] = get_byte(0, in); -#endif - } - -inline void store_be(u32bit in, byte out[4]) - { -#if BOTAN_TARGET_UNALIGNED_LOADSTOR_OK - *reinterpret_cast(out) = BOTAN_ENDIAN_B2N(in); -#else - out[0] = get_byte(0, in); - out[1] = get_byte(1, in); - out[2] = get_byte(2, in); - out[3] = get_byte(3, in); -#endif - } - -inline void store_le(u32bit in, byte out[4]) - { -#if BOTAN_TARGET_UNALIGNED_LOADSTOR_OK - *reinterpret_cast(out) = BOTAN_ENDIAN_L2N(in); -#else - out[0] = get_byte(3, in); - out[1] = get_byte(2, in); - out[2] = get_byte(1, in); - out[3] = get_byte(0, in); -#endif - } - -inline void store_be(u64bit in, byte out[8]) - { -#if BOTAN_TARGET_UNALIGNED_LOADSTOR_OK - *reinterpret_cast(out) = BOTAN_ENDIAN_B2N(in); -#else - out[0] = get_byte(0, in); - out[1] = get_byte(1, in); - out[2] = get_byte(2, in); - out[3] = get_byte(3, in); - out[4] = get_byte(4, in); - out[5] = get_byte(5, in); - out[6] = get_byte(6, in); - out[7] = get_byte(7, in); -#endif - } - -inline void store_le(u64bit in, byte out[8]) - { -#if BOTAN_TARGET_UNALIGNED_LOADSTOR_OK - *reinterpret_cast(out) = BOTAN_ENDIAN_L2N(in); -#else - out[0] = get_byte(7, in); - out[1] = get_byte(6, in); - out[2] = get_byte(5, in); - out[3] = get_byte(4, in); - out[4] = get_byte(3, in); - out[5] = get_byte(2, in); - out[6] = get_byte(1, in); - out[7] = get_byte(0, in); -#endif - } - -template -inline void store_le(byte out[], T a, T b) - { - store_le(a, out + (0 * sizeof(T))); - store_le(b, out + (1 * sizeof(T))); - } - -template -inline void store_be(byte out[], T a, T b) - { - store_be(a, out + (0 * sizeof(T))); - store_be(b, out + (1 * sizeof(T))); - } - -template -inline void store_le(byte out[], T a, T b, T c, T d) - { - store_le(a, out + (0 * sizeof(T))); - store_le(b, out + (1 * sizeof(T))); - store_le(c, out + (2 * sizeof(T))); - store_le(d, out + (3 * sizeof(T))); - } - -template -inline void store_be(byte out[], T a, T b, T c, T d) - { - store_be(a, out + (0 * sizeof(T))); - store_be(b, out + (1 * sizeof(T))); - store_be(c, out + (2 * sizeof(T))); - store_be(d, out + (3 * sizeof(T))); - } - -} - -#endif -- cgit v1.2.3