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/*
* Copyright 1995-2017 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#ifdef OPENSSL_SYS_WIN32
# include <stdlib.h>
#endif
/* NOTE - c is not incremented as per n2l */
#define n2ln(c,l1,l2,n) { \
c+=n; \
l1=l2=0; \
switch (n) { \
case 8: l2 =((unsigned long)(*(--(c)))) ; \
/* fall through */ \
case 7: l2|=((unsigned long)(*(--(c))))<< 8; \
/* fall through */ \
case 6: l2|=((unsigned long)(*(--(c))))<<16; \
/* fall through */ \
case 5: l2|=((unsigned long)(*(--(c))))<<24; \
/* fall through */ \
case 4: l1 =((unsigned long)(*(--(c)))) ; \
/* fall through */ \
case 3: l1|=((unsigned long)(*(--(c))))<< 8; \
/* fall through */ \
case 2: l1|=((unsigned long)(*(--(c))))<<16; \
/* fall through */ \
case 1: l1|=((unsigned long)(*(--(c))))<<24; \
} \
}
/* NOTE - c is not incremented as per l2n */
#define l2nn(l1,l2,c,n) { \
c+=n; \
switch (n) { \
case 8: *(--(c))=(unsigned char)(((l2) )&0xff); \
/* fall through */ \
case 7: *(--(c))=(unsigned char)(((l2)>> 8)&0xff); \
/* fall through */ \
case 6: *(--(c))=(unsigned char)(((l2)>>16)&0xff); \
/* fall through */ \
case 5: *(--(c))=(unsigned char)(((l2)>>24)&0xff); \
/* fall through */ \
case 4: *(--(c))=(unsigned char)(((l1) )&0xff); \
/* fall through */ \
case 3: *(--(c))=(unsigned char)(((l1)>> 8)&0xff); \
/* fall through */ \
case 2: *(--(c))=(unsigned char)(((l1)>>16)&0xff); \
/* fall through */ \
case 1: *(--(c))=(unsigned char)(((l1)>>24)&0xff); \
} \
}
#undef n2l
#define n2l(c,l) (l =((unsigned long)(*((c)++)))<<24L, \
l|=((unsigned long)(*((c)++)))<<16L, \
l|=((unsigned long)(*((c)++)))<< 8L, \
l|=((unsigned long)(*((c)++))))
#undef l2n
#define l2n(l,c) (*((c)++)=(unsigned char)(((l)>>24L)&0xff), \
*((c)++)=(unsigned char)(((l)>>16L)&0xff), \
*((c)++)=(unsigned char)(((l)>> 8L)&0xff), \
*((c)++)=(unsigned char)(((l) )&0xff))
#if defined(OPENSSL_SYS_WIN32) && defined(_MSC_VER)
# define ROTL(a,n) (_lrotl(a,n))
#else
# define ROTL(a,n) ((((a)<<(n))&0xffffffffL)|((a)>>((32-(n))&31)))
#endif
#define C_M 0x3fc
#define C_0 22L
#define C_1 14L
#define C_2 6L
#define C_3 2L /* left shift */
/* The rotate has an extra 16 added to it to help the x86 asm */
#if defined(CAST_PTR)
# define E_CAST(n,key,L,R,OP1,OP2,OP3) \
{ \
int i; \
t=(key[n*2] OP1 R)&0xffffffffL; \
i=key[n*2+1]; \
t=ROTL(t,i); \
L^= (((((*(CAST_LONG *)((unsigned char *) \
CAST_S_table0+((t>>C_2)&C_M)) OP2 \
*(CAST_LONG *)((unsigned char *) \
CAST_S_table1+((t<<C_3)&C_M)))&0xffffffffL) OP3 \
*(CAST_LONG *)((unsigned char *) \
CAST_S_table2+((t>>C_0)&C_M)))&0xffffffffL) OP1 \
*(CAST_LONG *)((unsigned char *) \
CAST_S_table3+((t>>C_1)&C_M)))&0xffffffffL; \
}
#elif defined(CAST_PTR2)
# define E_CAST(n,key,L,R,OP1,OP2,OP3) \
{ \
int i; \
CAST_LONG u,v,w; \
w=(key[n*2] OP1 R)&0xffffffffL; \
i=key[n*2+1]; \
w=ROTL(w,i); \
u=w>>C_2; \
v=w<<C_3; \
u&=C_M; \
v&=C_M; \
t= *(CAST_LONG *)((unsigned char *)CAST_S_table0+u); \
u=w>>C_0; \
t=(t OP2 *(CAST_LONG *)((unsigned char *)CAST_S_table1+v))&0xffffffffL;\
v=w>>C_1; \
u&=C_M; \
v&=C_M; \
t=(t OP3 *(CAST_LONG *)((unsigned char *)CAST_S_table2+u)&0xffffffffL);\
t=(t OP1 *(CAST_LONG *)((unsigned char *)CAST_S_table3+v)&0xffffffffL);\
L^=(t&0xffffffff); \
}
#else
# define E_CAST(n,key,L,R,OP1,OP2,OP3) \
{ \
CAST_LONG a,b,c,d; \
t=(key[n*2] OP1 R)&0xffffffff; \
t=ROTL(t,(key[n*2+1])); \
a=CAST_S_table0[(t>> 8)&0xff]; \
b=CAST_S_table1[(t )&0xff]; \
c=CAST_S_table2[(t>>24)&0xff]; \
d=CAST_S_table3[(t>>16)&0xff]; \
L^=(((((a OP2 b)&0xffffffffL) OP3 c)&0xffffffffL) OP1 d)&0xffffffffL; \
}
#endif
extern const CAST_LONG CAST_S_table0[256];
extern const CAST_LONG CAST_S_table1[256];
extern const CAST_LONG CAST_S_table2[256];
extern const CAST_LONG CAST_S_table3[256];
extern const CAST_LONG CAST_S_table4[256];
extern const CAST_LONG CAST_S_table5[256];
extern const CAST_LONG CAST_S_table6[256];
extern const CAST_LONG CAST_S_table7[256];
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