mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-11-22 07:28:10 +00:00
335 lines
12 KiB
C
335 lines
12 KiB
C
/*
|
|
---------------------------------------------------------------------------
|
|
Copyright (c) 1998-2014, Brian Gladman, Worcester, UK. All rights reserved.
|
|
|
|
The redistribution and use of this software (with or without changes)
|
|
is allowed without the payment of fees or royalties provided that:
|
|
|
|
source code distributions include the above copyright notice, this
|
|
list of conditions and the following disclaimer;
|
|
|
|
binary distributions include the above copyright notice, this list
|
|
of conditions and the following disclaimer in their documentation.
|
|
|
|
This software is provided 'as is' with no explicit or implied warranties
|
|
in respect of its operation, including, but not limited to, correctness
|
|
and fitness for purpose.
|
|
---------------------------------------------------------------------------
|
|
Issue Date: 18/02/2014
|
|
|
|
This header file is an INTERNAL file which supports mode implementation
|
|
*/
|
|
|
|
#ifndef _MODE_HDR_H
|
|
#define _MODE_HDR_H
|
|
|
|
#include <string.h>
|
|
#include <limits.h>
|
|
|
|
#include "brg_endian.h"
|
|
|
|
/* This define sets the units in which buffers are processed. This code
|
|
can provide significant speed gains if buffers can be processed in
|
|
32 or 64 bit chunks rather than in bytes. This define sets the units
|
|
in which buffers will be accessed if possible
|
|
*/
|
|
#if !defined( UNIT_BITS )
|
|
# if PLATFORM_BYTE_ORDER == IS_BIG_ENDIAN
|
|
# if 0
|
|
# define UNIT_BITS 32
|
|
# elif 1
|
|
# define UNIT_BITS 64
|
|
# endif
|
|
# elif defined( _WIN64 )
|
|
# define UNIT_BITS 64
|
|
# else
|
|
# define UNIT_BITS 32
|
|
# endif
|
|
#endif
|
|
|
|
#if UNIT_BITS == 64 && !defined( NEED_UINT_64T )
|
|
# define NEED_UINT_64T
|
|
#endif
|
|
|
|
#include <stdint.h>
|
|
#define UI_TYPE(size) uint##size##_t
|
|
#define UNIT_TYPEDEF(x,size) typedef UI_TYPE(size) x
|
|
#define BUFR_TYPEDEF(x,size,bsize) typedef UI_TYPE(size) x[bsize / (size >> 3)]
|
|
#define UNIT_CAST(x,size) ((UI_TYPE(size) )(x))
|
|
#define UPTR_CAST(x,size) ((UI_TYPE(size)*)(x))
|
|
|
|
/* Use of inlines is preferred but code blocks can also be expanded inline
|
|
using 'defines'. But the latter approach will typically generate a LOT
|
|
of code and is not recommended.
|
|
*/
|
|
#if 1 && !defined( USE_INLINING )
|
|
# define USE_INLINING
|
|
#endif
|
|
|
|
#if defined( _MSC_VER )
|
|
# if _MSC_VER >= 1400
|
|
# include <stdlib.h>
|
|
# include <intrin.h>
|
|
# pragma intrinsic(memset)
|
|
# pragma intrinsic(memcpy)
|
|
# define rotl32 _rotl
|
|
# define rotr32 _rotr
|
|
# define rotl64 _rotl64
|
|
# define rotr64 _rotl64
|
|
# define bswap_16(x) _byteswap_ushort(x)
|
|
# define bswap_32(x) _byteswap_ulong(x)
|
|
# define bswap_64(x) _byteswap_uint64(x)
|
|
# else
|
|
# define rotl32 _lrotl
|
|
# define rotr32 _lrotr
|
|
# endif
|
|
#endif
|
|
|
|
#if defined( USE_INLINING )
|
|
# if defined( _MSC_VER )
|
|
# define mh_decl __inline
|
|
# elif defined( __GNUC__ ) || defined( __GNU_LIBRARY__ )
|
|
# define mh_decl static inline
|
|
# else
|
|
# define mh_decl static
|
|
# endif
|
|
#endif
|
|
|
|
#if defined(__cplusplus)
|
|
extern "C" {
|
|
#endif
|
|
|
|
#define UI8_PTR(x) UPTR_CAST(x, 8)
|
|
#define UI16_PTR(x) UPTR_CAST(x, 16)
|
|
#define UI32_PTR(x) UPTR_CAST(x, 32)
|
|
#define UI64_PTR(x) UPTR_CAST(x, 64)
|
|
#define UNIT_PTR(x) UPTR_CAST(x, UNIT_BITS)
|
|
|
|
#define UI8_VAL(x) UNIT_CAST(x, 8)
|
|
#define UI16_VAL(x) UNIT_CAST(x, 16)
|
|
#define UI32_VAL(x) UNIT_CAST(x, 32)
|
|
#define UI64_VAL(x) UNIT_CAST(x, 64)
|
|
#define UNIT_VAL(x) UNIT_CAST(x, UNIT_BITS)
|
|
|
|
#define BUF_INC (UNIT_BITS >> 3)
|
|
#define BUF_ADRMASK ((UNIT_BITS >> 3) - 1)
|
|
|
|
#define rep2_u2(f,r,x) f( 0,r,x); f( 1,r,x)
|
|
#define rep2_u4(f,r,x) f( 0,r,x); f( 1,r,x); f( 2,r,x); f( 3,r,x)
|
|
#define rep2_u16(f,r,x) f( 0,r,x); f( 1,r,x); f( 2,r,x); f( 3,r,x); \
|
|
f( 4,r,x); f( 5,r,x); f( 6,r,x); f( 7,r,x); \
|
|
f( 8,r,x); f( 9,r,x); f(10,r,x); f(11,r,x); \
|
|
f(12,r,x); f(13,r,x); f(14,r,x); f(15,r,x)
|
|
|
|
#define rep2_d2(f,r,x) f( 1,r,x); f( 0,r,x)
|
|
#define rep2_d4(f,r,x) f( 3,r,x); f( 2,r,x); f( 1,r,x); f( 0,r,x)
|
|
#define rep2_d16(f,r,x) f(15,r,x); f(14,r,x); f(13,r,x); f(12,r,x); \
|
|
f(11,r,x); f(10,r,x); f( 9,r,x); f( 8,r,x); \
|
|
f( 7,r,x); f( 6,r,x); f( 5,r,x); f( 4,r,x); \
|
|
f( 3,r,x); f( 2,r,x); f( 1,r,x); f( 0,r,x)
|
|
|
|
#define rep3_u2(f,r,x,y,c) f( 0,r,x,y,c); f( 1,r,x,y,c)
|
|
#define rep3_u4(f,r,x,y,c) f( 0,r,x,y,c); f( 1,r,x,y,c); f( 2,r,x,y,c); f( 3,r,x,y,c)
|
|
#define rep3_u16(f,r,x,y,c) f( 0,r,x,y,c); f( 1,r,x,y,c); f( 2,r,x,y,c); f( 3,r,x,y,c); \
|
|
f( 4,r,x,y,c); f( 5,r,x,y,c); f( 6,r,x,y,c); f( 7,r,x,y,c); \
|
|
f( 8,r,x,y,c); f( 9,r,x,y,c); f(10,r,x,y,c); f(11,r,x,y,c); \
|
|
f(12,r,x,y,c); f(13,r,x,y,c); f(14,r,x,y,c); f(15,r,x,y,c)
|
|
|
|
#define rep3_d2(f,r,x,y,c) f( 1,r,x,y,c); f( 0,r,x,y,c)
|
|
#define rep3_d4(f,r,x,y,c) f( 3,r,x,y,c); f( 2,r,x,y,c); f( 1,r,x,y,c); f( 0,r,x,y,c)
|
|
#define rep3_d16(f,r,x,y,c) f(15,r,x,y,c); f(14,r,x,y,c); f(13,r,x,y,c); f(12,r,x,y,c); \
|
|
f(11,r,x,y,c); f(10,r,x,y,c); f( 9,r,x,y,c); f( 8,r,x,y,c); \
|
|
f( 7,r,x,y,c); f( 6,r,x,y,c); f( 5,r,x,y,c); f( 4,r,x,y,c); \
|
|
f( 3,r,x,y,c); f( 2,r,x,y,c); f( 1,r,x,y,c); f( 0,r,x,y,c)
|
|
|
|
/* function pointers might be used for fast XOR operations */
|
|
|
|
typedef void (*xor_function)(void* r, const void* p, const void* q);
|
|
|
|
/* left and right rotates on 32 and 64 bit variables */
|
|
|
|
#if !defined( rotl32 ) /* NOTE: 0 <= n <= 32 ASSUMED */
|
|
mh_decl uint32_t rotl32(uint32_t x, int n)
|
|
{
|
|
return (((x) << n) | ((x) >> (32 - n)));
|
|
}
|
|
#endif
|
|
|
|
#if !defined( rotr32 ) /* NOTE: 0 <= n <= 32 ASSUMED */
|
|
mh_decl uint32_t rotr32(uint32_t x, int n)
|
|
{
|
|
return (((x) >> n) | ((x) << (32 - n)));
|
|
}
|
|
#endif
|
|
|
|
#if ( UNIT_BITS == 64 ) && !defined( rotl64 ) /* NOTE: 0 <= n <= 64 ASSUMED */
|
|
mh_decl uint64_t rotl64(uint64_t x, int n)
|
|
{
|
|
return (((x) << n) | ((x) >> (64 - n)));
|
|
}
|
|
#endif
|
|
|
|
#if ( UNIT_BITS == 64 ) && !defined( rotr64 ) /* NOTE: 0 <= n <= 64 ASSUMED */
|
|
mh_decl uint64_t rotr64(uint64_t x, int n)
|
|
{
|
|
return (((x) >> n) | ((x) << (64 - n)));
|
|
}
|
|
#endif
|
|
|
|
/* byte order inversions for 16, 32 and 64 bit variables */
|
|
|
|
#if !defined(bswap_16)
|
|
mh_decl uint16_t bswap_16(uint16_t x)
|
|
{
|
|
return (uint16_t)((x >> 8) | (x << 8));
|
|
}
|
|
#endif
|
|
|
|
#if !defined(bswap_32)
|
|
mh_decl uint32_t bswap_32(uint32_t x)
|
|
{
|
|
return ((rotr32((x), 24) & 0x00ff00ff) | (rotr32((x), 8) & 0xff00ff00));
|
|
}
|
|
#endif
|
|
|
|
#if ( UNIT_BITS == 64 ) && !defined(bswap_64)
|
|
mh_decl uint64_t bswap_64(uint64_t x)
|
|
{
|
|
return bswap_32((uint32_t)(x >> 32)) | ((uint64_t)bswap_32((uint32_t)x) << 32);
|
|
}
|
|
#endif
|
|
|
|
/* support for fast aligned buffer move, xor and byte swap operations -
|
|
source and destination buffers for move and xor operations must not
|
|
overlap, those for byte order revesal must either not overlap or
|
|
must be identical
|
|
*/
|
|
#define f_copy(n,p,q) p[n] = q[n]
|
|
#define f_xor(n,r,p,q,c) r[n] = c(p[n] ^ q[n])
|
|
|
|
mh_decl void copy_block(void* p, const void* q)
|
|
{
|
|
memcpy(p, q, 16);
|
|
}
|
|
|
|
mh_decl void copy_block_aligned(void *p, const void *q)
|
|
{
|
|
#if UNIT_BITS == 8
|
|
memcpy(p, q, 16);
|
|
#elif UNIT_BITS == 32
|
|
rep2_u4(f_copy,UNIT_PTR(p),UNIT_PTR(q));
|
|
#else
|
|
rep2_u2(f_copy,UNIT_PTR(p),UNIT_PTR(q));
|
|
#endif
|
|
}
|
|
|
|
mh_decl void xor_block(void *r, const void* p, const void* q)
|
|
{
|
|
rep3_u16(f_xor, UI8_PTR(r), UI8_PTR(p), UI8_PTR(q), UI8_VAL);
|
|
}
|
|
|
|
mh_decl void xor_block_aligned(void *r, const void *p, const void *q)
|
|
{
|
|
#if UNIT_BITS == 8
|
|
rep3_u16(f_xor, UNIT_PTR(r), UNIT_PTR(p), UNIT_PTR(q), UNIT_VAL);
|
|
#elif UNIT_BITS == 32
|
|
rep3_u4(f_xor, UNIT_PTR(r), UNIT_PTR(p), UNIT_PTR(q), UNIT_VAL);
|
|
#else
|
|
rep3_u2(f_xor, UNIT_PTR(r), UNIT_PTR(p), UNIT_PTR(q), UNIT_VAL);
|
|
#endif
|
|
}
|
|
|
|
/* byte swap within 32-bit words in a 16 byte block; don't move 32-bit words */
|
|
mh_decl void bswap32_block(void *d, const void* s)
|
|
{
|
|
#if UNIT_BITS == 8
|
|
uint8_t t = 0;
|
|
t = UNIT_PTR(s)[ 0]; UNIT_PTR(d)[ 0] = UNIT_PTR(s)[ 3]; UNIT_PTR(d)[ 3] = t;
|
|
t = UNIT_PTR(s)[ 1]; UNIT_PTR(d)[ 1] = UNIT_PTR(s)[ 2]; UNIT_PTR(d)[ 2] = t;
|
|
t = UNIT_PTR(s)[ 4]; UNIT_PTR(d)[ 4] = UNIT_PTR(s)[ 7]; UNIT_PTR(d)[ 7] = t;
|
|
t = UNIT_PTR(s)[ 5]; UNIT_PTR(d)[ 5] = UNIT_PTR(s)[ 6]; UNIT_PTR(d) [6] = t;
|
|
t = UNIT_PTR(s)[ 8]; UNIT_PTR(d)[ 8] = UNIT_PTR(s)[11]; UNIT_PTR(d)[12] = t;
|
|
t = UNIT_PTR(s)[ 9]; UNIT_PTR(d)[ 9] = UNIT_PTR(s)[10]; UNIT_PTR(d)[10] = t;
|
|
t = UNIT_PTR(s)[12]; UNIT_PTR(d)[12] = UNIT_PTR(s)[15]; UNIT_PTR(d)[15] = t;
|
|
t = UNIT_PTR(s)[13]; UNIT_PTR(d)[ 3] = UNIT_PTR(s)[14]; UNIT_PTR(d)[14] = t;
|
|
#elif UNIT_BITS == 32
|
|
UNIT_PTR(d)[0] = bswap_32(UNIT_PTR(s)[0]); UNIT_PTR(d)[1] = bswap_32(UNIT_PTR(s)[1]);
|
|
UNIT_PTR(d)[2] = bswap_32(UNIT_PTR(s)[2]); UNIT_PTR(d)[3] = bswap_32(UNIT_PTR(s)[3]);
|
|
#else
|
|
UI32_PTR(d)[0] = bswap_32(UI32_PTR(s)[0]); UI32_PTR(d)[1] = bswap_32(UI32_PTR(s)[1]);
|
|
UI32_PTR(d)[2] = bswap_32(UI32_PTR(s)[2]); UI32_PTR(d)[3] = bswap_32(UI32_PTR(s)[3]);
|
|
#endif
|
|
}
|
|
|
|
/* byte swap within 64-bit words in a 16 byte block; don't move 64-bit words */
|
|
mh_decl void bswap64_block(void *d, const void* s)
|
|
{
|
|
#if UNIT_BITS == 8
|
|
uint8_t t = 0;
|
|
t = UNIT_PTR(s)[ 0]; UNIT_PTR(d)[ 0] = UNIT_PTR(s)[ 7]; UNIT_PTR(d)[ 7] = t;
|
|
t = UNIT_PTR(s)[ 1]; UNIT_PTR(d)[ 1] = UNIT_PTR(s)[ 6]; UNIT_PTR(d)[ 6] = t;
|
|
t = UNIT_PTR(s)[ 2]; UNIT_PTR(d)[ 2] = UNIT_PTR(s)[ 5]; UNIT_PTR(d)[ 5] = t;
|
|
t = UNIT_PTR(s)[ 3]; UNIT_PTR(d)[ 3] = UNIT_PTR(s)[ 3]; UNIT_PTR(d) [3] = t;
|
|
t = UNIT_PTR(s)[ 8]; UNIT_PTR(d)[ 8] = UNIT_PTR(s)[15]; UNIT_PTR(d)[15] = t;
|
|
t = UNIT_PTR(s)[ 9]; UNIT_PTR(d)[ 9] = UNIT_PTR(s)[14]; UNIT_PTR(d)[14] = t;
|
|
t = UNIT_PTR(s)[10]; UNIT_PTR(d)[10] = UNIT_PTR(s)[13]; UNIT_PTR(d)[13] = t;
|
|
t = UNIT_PTR(s)[11]; UNIT_PTR(d)[11] = UNIT_PTR(s)[12]; UNIT_PTR(d)[12] = t;
|
|
#elif UNIT_BITS == 32
|
|
uint32_t t = 0;
|
|
t = bswap_32(UNIT_PTR(s)[0]); UNIT_PTR(d)[0] = bswap_32(UNIT_PTR(s)[1]); UNIT_PTR(d)[1] = t;
|
|
t = bswap_32(UNIT_PTR(s)[2]); UNIT_PTR(d)[2] = bswap_32(UNIT_PTR(s)[2]); UNIT_PTR(d)[3] = t;
|
|
#else
|
|
UNIT_PTR(d)[0] = bswap_64(UNIT_PTR(s)[0]); UNIT_PTR(d)[1] = bswap_64(UNIT_PTR(s)[1]);
|
|
#endif
|
|
}
|
|
|
|
mh_decl void bswap128_block(void *d, const void* s)
|
|
{
|
|
#if UNIT_BITS == 8
|
|
uint8_t t = 0;
|
|
t = UNIT_PTR(s)[0]; UNIT_PTR(d)[0] = UNIT_PTR(s)[15]; UNIT_PTR(d)[15] = t;
|
|
t = UNIT_PTR(s)[1]; UNIT_PTR(d)[1] = UNIT_PTR(s)[14]; UNIT_PTR(d)[14] = t;
|
|
t = UNIT_PTR(s)[2]; UNIT_PTR(d)[2] = UNIT_PTR(s)[13]; UNIT_PTR(d)[13] = t;
|
|
t = UNIT_PTR(s)[3]; UNIT_PTR(d)[3] = UNIT_PTR(s)[12]; UNIT_PTR(d)[12] = t;
|
|
t = UNIT_PTR(s)[4]; UNIT_PTR(d)[4] = UNIT_PTR(s)[11]; UNIT_PTR(d)[11] = t;
|
|
t = UNIT_PTR(s)[5]; UNIT_PTR(d)[5] = UNIT_PTR(s)[10]; UNIT_PTR(d)[10] = t;
|
|
t = UNIT_PTR(s)[6]; UNIT_PTR(d)[6] = UNIT_PTR(s)[ 9]; UNIT_PTR(d)[ 9] = t;
|
|
t = UNIT_PTR(s)[7]; UNIT_PTR(d)[7] = UNIT_PTR(s)[ 8]; UNIT_PTR(d)[ 8] = t;
|
|
#elif UNIT_BITS == 32
|
|
uint32_t t = 0;
|
|
t = bswap_32(UNIT_PTR(s)[0]); UNIT_PTR(d)[0] = bswap_32(UNIT_PTR(s)[3]); UNIT_PTR(d)[3] = t;
|
|
t = bswap_32(UNIT_PTR(s)[1]); UNIT_PTR(d)[1] = bswap_32(UNIT_PTR(s)[2]); UNIT_PTR(d)[2] = t;
|
|
#else
|
|
uint64_t t = 0;
|
|
t = bswap_64(UNIT_PTR(s)[0]); UNIT_PTR(d)[0] = bswap_64(UNIT_PTR(s)[1]); UNIT_PTR(d)[1] = t;
|
|
#endif
|
|
}
|
|
|
|
/* platform byte order to big or little endian order for 16, 32 and 64 bit variables */
|
|
|
|
#if PLATFORM_BYTE_ORDER == IS_BIG_ENDIAN
|
|
|
|
# define uint16_t_to_le(x) (x) = bswap_16((x))
|
|
# define uint32_t_to_le(x) (x) = bswap_32((x))
|
|
# define uint64_t_to_le(x) (x) = bswap_64((x))
|
|
# define uint16_t_to_be(x)
|
|
# define uint32_t_to_be(x)
|
|
# define uint64_t_to_be(x)
|
|
|
|
#else
|
|
|
|
# define uint16_t_to_le(x)
|
|
# define uint32_t_to_le(x)
|
|
# define uint64_t_to_le(x)
|
|
# define uint16_t_to_be(x) (x) = bswap_16((x))
|
|
# define uint32_t_to_be(x) (x) = bswap_32((x))
|
|
# define uint64_t_to_be(x) (x) = bswap_64((x))
|
|
|
|
#endif
|
|
|
|
#if defined(__cplusplus)
|
|
}
|
|
#endif
|
|
|
|
#endif
|