1/*
2 * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10#undef c2l
11#define c2l(c,l) (l =((unsigned long)(*((c)++))) , \
12 l|=((unsigned long)(*((c)++)))<< 8L, \
13 l|=((unsigned long)(*((c)++)))<<16L, \
14 l|=((unsigned long)(*((c)++)))<<24L)
15
16/* NOTE - c is not incremented as per c2l */
17#undef c2ln
18#define c2ln(c,l1,l2,n) { \
19 c+=n; \
20 l1=l2=0; \
21 switch (n) { \
22 case 8: l2 =((unsigned long)(*(--(c))))<<24L; \
23 /* fall thru */ \
24 case 7: l2|=((unsigned long)(*(--(c))))<<16L; \
25 /* fall thru */ \
26 case 6: l2|=((unsigned long)(*(--(c))))<< 8L; \
27 /* fall thru */ \
28 case 5: l2|=((unsigned long)(*(--(c)))); \
29 /* fall thru */ \
30 case 4: l1 =((unsigned long)(*(--(c))))<<24L; \
31 /* fall thru */ \
32 case 3: l1|=((unsigned long)(*(--(c))))<<16L; \
33 /* fall thru */ \
34 case 2: l1|=((unsigned long)(*(--(c))))<< 8L; \
35 /* fall thru */ \
36 case 1: l1|=((unsigned long)(*(--(c)))); \
37 } \
38 }
39
40#undef l2c
41#define l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \
42 *((c)++)=(unsigned char)(((l)>> 8L)&0xff), \
43 *((c)++)=(unsigned char)(((l)>>16L)&0xff), \
44 *((c)++)=(unsigned char)(((l)>>24L)&0xff))
45
46/* NOTE - c is not incremented as per l2c */
47#undef l2cn
48#define l2cn(l1,l2,c,n) { \
49 c+=n; \
50 switch (n) { \
51 case 8: *(--(c))=(unsigned char)(((l2)>>24L)&0xff); \
52 /* fall thru */ \
53 case 7: *(--(c))=(unsigned char)(((l2)>>16L)&0xff); \
54 /* fall thru */ \
55 case 6: *(--(c))=(unsigned char)(((l2)>> 8L)&0xff); \
56 /* fall thru */ \
57 case 5: *(--(c))=(unsigned char)(((l2) )&0xff); \
58 /* fall thru */ \
59 case 4: *(--(c))=(unsigned char)(((l1)>>24L)&0xff); \
60 /* fall thru */ \
61 case 3: *(--(c))=(unsigned char)(((l1)>>16L)&0xff); \
62 /* fall thru */ \
63 case 2: *(--(c))=(unsigned char)(((l1)>> 8L)&0xff); \
64 /* fall thru */ \
65 case 1: *(--(c))=(unsigned char)(((l1) )&0xff); \
66 } \
67 }
68
69/* NOTE - c is not incremented as per n2l */
70#define n2ln(c,l1,l2,n) { \
71 c+=n; \
72 l1=l2=0; \
73 switch (n) { \
74 case 8: l2 =((unsigned long)(*(--(c)))) ; \
75 /* fall thru */ \
76 case 7: l2|=((unsigned long)(*(--(c))))<< 8; \
77 /* fall thru */ \
78 case 6: l2|=((unsigned long)(*(--(c))))<<16; \
79 /* fall thru */ \
80 case 5: l2|=((unsigned long)(*(--(c))))<<24; \
81 /* fall thru */ \
82 case 4: l1 =((unsigned long)(*(--(c)))) ; \
83 /* fall thru */ \
84 case 3: l1|=((unsigned long)(*(--(c))))<< 8; \
85 /* fall thru */ \
86 case 2: l1|=((unsigned long)(*(--(c))))<<16; \
87 /* fall thru */ \
88 case 1: l1|=((unsigned long)(*(--(c))))<<24; \
89 } \
90 }
91
92/* NOTE - c is not incremented as per l2n */
93#define l2nn(l1,l2,c,n) { \
94 c+=n; \
95 switch (n) { \
96 case 8: *(--(c))=(unsigned char)(((l2) )&0xff); \
97 /* fall thru */ \
98 case 7: *(--(c))=(unsigned char)(((l2)>> 8)&0xff); \
99 /* fall thru */ \
100 case 6: *(--(c))=(unsigned char)(((l2)>>16)&0xff); \
101 /* fall thru */ \
102 case 5: *(--(c))=(unsigned char)(((l2)>>24)&0xff); \
103 /* fall thru */ \
104 case 4: *(--(c))=(unsigned char)(((l1) )&0xff); \
105 /* fall thru */ \
106 case 3: *(--(c))=(unsigned char)(((l1)>> 8)&0xff); \
107 /* fall thru */ \
108 case 2: *(--(c))=(unsigned char)(((l1)>>16)&0xff); \
109 /* fall thru */ \
110 case 1: *(--(c))=(unsigned char)(((l1)>>24)&0xff); \
111 } \
112 }
113
114#undef n2l
115#define n2l(c,l) (l =((unsigned long)(*((c)++)))<<24L, \
116 l|=((unsigned long)(*((c)++)))<<16L, \
117 l|=((unsigned long)(*((c)++)))<< 8L, \
118 l|=((unsigned long)(*((c)++))))
119
120#undef l2n
121#define l2n(l,c) (*((c)++)=(unsigned char)(((l)>>24L)&0xff), \
122 *((c)++)=(unsigned char)(((l)>>16L)&0xff), \
123 *((c)++)=(unsigned char)(((l)>> 8L)&0xff), \
124 *((c)++)=(unsigned char)(((l) )&0xff))
125
126#define C_RC2(n) \
127 t=(x0+(x1& ~x3)+(x2&x3)+ *(p0++))&0xffff; \
128 x0=(t<<1)|(t>>15); \
129 t=(x1+(x2& ~x0)+(x3&x0)+ *(p0++))&0xffff; \
130 x1=(t<<2)|(t>>14); \
131 t=(x2+(x3& ~x1)+(x0&x1)+ *(p0++))&0xffff; \
132 x2=(t<<3)|(t>>13); \
133 t=(x3+(x0& ~x2)+(x1&x2)+ *(p0++))&0xffff; \
134 x3=(t<<5)|(t>>11);
135