1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
| /* AES (Rijndael) implementation (FIPS PUB 197) for x86_64
| *
| * Copyright (C) 2005 Andreas Steinmetz, <ast@domdv.de>
| *
| * License:
| * This code can be distributed under the terms of the GNU General Public
| * License (GPL) Version 2 provided that the above header down to and
| * including this sentence is retained in full.
| */
|
| .extern crypto_ft_tab
| .extern crypto_it_tab
| .extern crypto_fl_tab
| .extern crypto_il_tab
|
| .text
|
| #include <linux/linkage.h>
| #include <asm/asm-offsets.h>
|
| #define R1 %rax
| #define R1E %eax
| #define R1X %ax
| #define R1H %ah
| #define R1L %al
| #define R2 %rbx
| #define R2E %ebx
| #define R2X %bx
| #define R2H %bh
| #define R2L %bl
| #define R3 %rcx
| #define R3E %ecx
| #define R3X %cx
| #define R3H %ch
| #define R3L %cl
| #define R4 %rdx
| #define R4E %edx
| #define R4X %dx
| #define R4H %dh
| #define R4L %dl
| #define R5 %rsi
| #define R5E %esi
| #define R6 %rdi
| #define R6E %edi
| #define R7 %r9 /* don't use %rbp; it breaks stack traces */
| #define R7E %r9d
| #define R8 %r8
| #define R10 %r10
| #define R11 %r11
|
| #define prologue(FUNC,KEY,B128,B192,r1,r2,r5,r6,r7,r8,r9,r10,r11) \
| ENTRY(FUNC); \
| movq r1,r2; \
| leaq KEY+48(r8),r9; \
| movq r10,r11; \
| movl (r7),r5 ## E; \
| movl 4(r7),r1 ## E; \
| movl 8(r7),r6 ## E; \
| movl 12(r7),r7 ## E; \
| movl 480(r8),r10 ## E; \
| xorl -48(r9),r5 ## E; \
| xorl -44(r9),r1 ## E; \
| xorl -40(r9),r6 ## E; \
| xorl -36(r9),r7 ## E; \
| cmpl $24,r10 ## E; \
| jb B128; \
| leaq 32(r9),r9; \
| je B192; \
| leaq 32(r9),r9;
|
| #define epilogue(FUNC,r1,r2,r5,r6,r7,r8,r9) \
| movq r1,r2; \
| movl r5 ## E,(r9); \
| movl r6 ## E,4(r9); \
| movl r7 ## E,8(r9); \
| movl r8 ## E,12(r9); \
| ret; \
| ENDPROC(FUNC);
|
| #define round(TAB,OFFSET,r1,r2,r3,r4,r5,r6,r7,r8,ra,rb,rc,rd) \
| movzbl r2 ## H,r5 ## E; \
| movzbl r2 ## L,r6 ## E; \
| movl TAB+1024(,r5,4),r5 ## E;\
| movw r4 ## X,r2 ## X; \
| movl TAB(,r6,4),r6 ## E; \
| roll $16,r2 ## E; \
| shrl $16,r4 ## E; \
| movzbl r4 ## L,r7 ## E; \
| movzbl r4 ## H,r4 ## E; \
| xorl OFFSET(r8),ra ## E; \
| xorl OFFSET+4(r8),rb ## E; \
| xorl TAB+3072(,r4,4),r5 ## E;\
| xorl TAB+2048(,r7,4),r6 ## E;\
| movzbl r1 ## L,r7 ## E; \
| movzbl r1 ## H,r4 ## E; \
| movl TAB+1024(,r4,4),r4 ## E;\
| movw r3 ## X,r1 ## X; \
| roll $16,r1 ## E; \
| shrl $16,r3 ## E; \
| xorl TAB(,r7,4),r5 ## E; \
| movzbl r3 ## L,r7 ## E; \
| movzbl r3 ## H,r3 ## E; \
| xorl TAB+3072(,r3,4),r4 ## E;\
| xorl TAB+2048(,r7,4),r5 ## E;\
| movzbl r1 ## L,r7 ## E; \
| movzbl r1 ## H,r3 ## E; \
| shrl $16,r1 ## E; \
| xorl TAB+3072(,r3,4),r6 ## E;\
| movl TAB+2048(,r7,4),r3 ## E;\
| movzbl r1 ## L,r7 ## E; \
| movzbl r1 ## H,r1 ## E; \
| xorl TAB+1024(,r1,4),r6 ## E;\
| xorl TAB(,r7,4),r3 ## E; \
| movzbl r2 ## H,r1 ## E; \
| movzbl r2 ## L,r7 ## E; \
| shrl $16,r2 ## E; \
| xorl TAB+3072(,r1,4),r3 ## E;\
| xorl TAB+2048(,r7,4),r4 ## E;\
| movzbl r2 ## H,r1 ## E; \
| movzbl r2 ## L,r2 ## E; \
| xorl OFFSET+8(r8),rc ## E; \
| xorl OFFSET+12(r8),rd ## E; \
| xorl TAB+1024(,r1,4),r3 ## E;\
| xorl TAB(,r2,4),r4 ## E;
|
| #define move_regs(r1,r2,r3,r4) \
| movl r3 ## E,r1 ## E; \
| movl r4 ## E,r2 ## E;
|
| #define entry(FUNC,KEY,B128,B192) \
| prologue(FUNC,KEY,B128,B192,R2,R8,R1,R3,R4,R6,R10,R5,R11)
|
| #define return(FUNC) epilogue(FUNC,R8,R2,R5,R6,R3,R4,R11)
|
| #define encrypt_round(TAB,OFFSET) \
| round(TAB,OFFSET,R1,R2,R3,R4,R5,R6,R7,R10,R5,R6,R3,R4) \
| move_regs(R1,R2,R5,R6)
|
| #define encrypt_final(TAB,OFFSET) \
| round(TAB,OFFSET,R1,R2,R3,R4,R5,R6,R7,R10,R5,R6,R3,R4)
|
| #define decrypt_round(TAB,OFFSET) \
| round(TAB,OFFSET,R2,R1,R4,R3,R6,R5,R7,R10,R5,R6,R3,R4) \
| move_regs(R1,R2,R5,R6)
|
| #define decrypt_final(TAB,OFFSET) \
| round(TAB,OFFSET,R2,R1,R4,R3,R6,R5,R7,R10,R5,R6,R3,R4)
|
| /* void aes_enc_blk(stuct crypto_tfm *tfm, u8 *out, const u8 *in) */
|
| entry(aes_enc_blk,0,.Le128,.Le192)
| encrypt_round(crypto_ft_tab,-96)
| encrypt_round(crypto_ft_tab,-80)
| .Le192: encrypt_round(crypto_ft_tab,-64)
| encrypt_round(crypto_ft_tab,-48)
| .Le128: encrypt_round(crypto_ft_tab,-32)
| encrypt_round(crypto_ft_tab,-16)
| encrypt_round(crypto_ft_tab, 0)
| encrypt_round(crypto_ft_tab, 16)
| encrypt_round(crypto_ft_tab, 32)
| encrypt_round(crypto_ft_tab, 48)
| encrypt_round(crypto_ft_tab, 64)
| encrypt_round(crypto_ft_tab, 80)
| encrypt_round(crypto_ft_tab, 96)
| encrypt_final(crypto_fl_tab,112)
| return(aes_enc_blk)
|
| /* void aes_dec_blk(struct crypto_tfm *tfm, u8 *out, const u8 *in) */
|
| entry(aes_dec_blk,240,.Ld128,.Ld192)
| decrypt_round(crypto_it_tab,-96)
| decrypt_round(crypto_it_tab,-80)
| .Ld192: decrypt_round(crypto_it_tab,-64)
| decrypt_round(crypto_it_tab,-48)
| .Ld128: decrypt_round(crypto_it_tab,-32)
| decrypt_round(crypto_it_tab,-16)
| decrypt_round(crypto_it_tab, 0)
| decrypt_round(crypto_it_tab, 16)
| decrypt_round(crypto_it_tab, 32)
| decrypt_round(crypto_it_tab, 48)
| decrypt_round(crypto_it_tab, 64)
| decrypt_round(crypto_it_tab, 80)
| decrypt_round(crypto_it_tab, 96)
| decrypt_final(crypto_il_tab,112)
| return(aes_dec_blk)
|
|
