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1 | struct list_head { |
2 | }; | |
3 | int __static_cpu_has(unsigned short bit) | |
4 | { | |
5 | asm goto ("1: jmp %l[t_no]\n" "2:\n" ".section .altinstructions,\"a\"\n" | |
6 | " " ".balign 4" " " "\n" " " ".long" " " "1b\n" " " ".long" | |
7 | " " "0\n" " .word %P0\n" " .byte 2b - 1b\n" " .byte 0\n" | |
8 | ".previous\n"::"i" (bit)::t_no); | |
9 | return 1; | |
10 | t_no:return 0; | |
11 | } | |
12 | ||
13 | struct cpuinfo_x86 { | |
14 | unsigned int x86_capability[10]; | |
15 | } __attribute__ ((__aligned__((1 << (6))))); | |
16 | extern struct cpuinfo_x86 boot_cpu_data; | |
17 | struct i387_fxsave_struct { | |
18 | unsigned short swd; | |
19 | } __attribute__ ((aligned(16))); | |
20 | struct xsave_hdr_struct { | |
21 | unsigned long long xstate_bv; | |
22 | } __attribute__ ((packed)); | |
23 | struct xsave_struct { | |
24 | struct xsave_hdr_struct xsave_hdr; | |
25 | } __attribute__ ((packed, aligned(64))); | |
26 | union thread_xstate { | |
27 | struct i387_fxsave_struct fxsave; | |
28 | struct xsave_struct xsave; | |
29 | }; | |
30 | struct fpu { | |
31 | union thread_xstate *state; | |
32 | }; | |
33 | struct cipher_alg { | |
34 | void (*cia_decrypt) (struct crypto_tfm * tfm, unsigned char *dst, | |
35 | const unsigned char *src); | |
36 | }; | |
37 | struct crypto_alg { | |
38 | struct list_head cra_list; | |
39 | union { | |
40 | struct cipher_alg cipher; | |
41 | } cra_u; | |
42 | }; | |
43 | static __attribute__ ((always_inline)) __attribute__ ((pure)) | |
44 | int use_xsave(void) | |
45 | { | |
46 | return (__builtin_constant_p | |
47 | ((__builtin_constant_p(154) | |
48 | && | |
49 | ((4 == 0 | |
50 | && (1UL << (26) & | |
51 | ((1 << 0) | (1 << 6) | | |
52 | (1 << 8) | (1 << 15)))) | |
53 | || ((4) == 1 && (1UL << (26) & 0)) || ((4) == 2 | |
54 | && (1UL << | |
55 | (26) & 0)) || ((4) == 3 && (1UL << (26) & 0)) || ((4) == 4 && (1UL << (26) & 0)) || ((4) == 5 && (1UL << (26) & 0)) || ((4) == 6 && (1UL << (26) & 0)) || ((4) == 7 && (1UL << (26) & 0)) || ((4) == 8 && (1UL << (26) & 0)) || ((4) == 9 && (1UL << (26) & 0))) ? 1 : (__builtin_constant_p(154) ? constant_test_bit(154, ((unsigned long *)((&boot_cpu_data)->x86_capability))) : variable_test_bit(((154)), ((unsigned long *)((&boot_cpu_data)->x86_capability)))))) ? (__builtin_constant_p((154)) && (((4) == 0 && (1UL << (26) & ((1 << (0 & 31)) | (1 << ((6) & 31)) | (1 << ((0 * 32 + 8) & 31)) | (1 << ((15) & 31)) | 0))) || ((4) == 1 && (1UL << (26) & 0)) || ((4) == 2 && (1UL << (26) & 0)) || ((4) == 3 && (1UL << (26) & 0)) || ((4) == 4 && (1UL << (26) & 0)) || ((4) == 5 && (1UL << (26) & 0)) || ((4) == 6 && (1UL << (26) & 0)) || ((4) == 7 && (1UL << (26) & 0)) || ((4) == 8 && (1UL << (26) & 0)) || ((4) == 9 && (1UL << (26) & 0))) ? 1 : (__builtin_constant_p(((154))) ? constant_test_bit(((154)), ((unsigned long *)((&boot_cpu_data)->x86_capability))) : variable_test_bit(((154)), ((unsigned long *)((&boot_cpu_data)->x86_capability))))) : __builtin_constant_p((154)) ? __static_cpu_has((154)) : (__builtin_constant_p((154)) && (((4) == 0 && (1UL << (26) & ((1 << (0 & 31)) | (1 << ((6) & 31)) | (1 << ((8) & 31)) | (1 << ((15) & 31)) | 0))) || ((4) == 1 && (1UL << (26) & 0)) || ((4) == 2 && (1UL << (26) & 0)) || ((4) == 3 && (1UL << (26) & 0)) || ((4) == 4 && (1UL << (26) & 0)) || ((4) == 5 && (1UL << (26) & 0)) || ((4) == 6 && (1UL << (26) & 0)) || ((4) == 7 && (1UL << (26) & 0)) || ((4) == 8 && (1UL << (26) & 0)) || ((4) == 9 && (1UL << (26) & 0))) ? 1 : (__builtin_constant_p(((154))) ? constant_test_bit(((154)), ((unsigned long *)((&boot_cpu_data)->x86_capability))) : variable_test_bit(((154)), ((unsigned long *)((&boot_cpu_data)->x86_capability)))))); | |
56 | } | |
57 | ||
58 | static inline __attribute__ ((always_inline)) __attribute__ ((always_inline)) | |
59 | __attribute__ ((pure)) | |
60 | int use_fxsr(void) | |
61 | { | |
62 | return (__builtin_constant_p | |
63 | ((__builtin_constant_p((24)) | |
64 | && | |
65 | (((((24)) >> 5) == 0 | |
66 | && (1UL << (24) & | |
67 | ((1 << 0) | (1 << 6) | | |
68 | (1 << 8) | (1 << 15) ))) | |
69 | || ((((24)) >> 5) == 1 && (1UL << (24) & 0)) | |
70 | || ((((24)) >> 5) == 2 && (1UL << (24) & 0)) | |
71 | || ((((24)) >> 5) == 3 && (1UL << (24) & 0)) | |
72 | || ((((24)) >> 5) == 4 && (1UL << (24) & 0)) | |
73 | || ((((24)) >> 5) == 5 && (1UL << (24) & 0)) | |
74 | || ((((24)) >> 5) == 6 && (1UL << (24) & 0)) | |
75 | || ((((24)) >> 5) == 7 && (1UL << (24) & 0)) | |
76 | || ((((24)) >> 5) == 8 && (1UL << (24) & 0)) | |
77 | || ((((24)) >> 5) == 9 | |
78 | && (1UL << (24) & 0))) ? 1 | |
79 | : (__builtin_constant_p(((24))) ? | |
80 | constant_test_bit(((24)), | |
81 | ((unsigned long *)((&boot_cpu_data)-> | |
82 | x86_capability))) : | |
83 | variable_test_bit(((24)), | |
84 | ((unsigned long *)((&boot_cpu_data)-> | |
85 | x86_capability)))))) | |
86 | ? (__builtin_constant_p((24)) | |
87 | && | |
88 | (((((24)) >> 5) == 0 | |
89 | && (1UL << (24) & | |
90 | ((1 << (0 & 31)) | (1 << ((6) & 31)) | | |
91 | (1 << ((0 * 32 + 8) & 31)) | (1 << ((15) & 31)) | | |
92 | 0))) || ((((24)) >> 5) == 1 && (1UL << (24) & 0)) | |
93 | || ((((24)) >> 5) == 2 && (1UL << (24) & 0)) | |
94 | || ((((24)) >> 5) == 3 && (1UL << (24) & 0)) | |
95 | || ((((24)) >> 5) == 4 && (1UL << (24) & 0)) | |
96 | || ((((24)) >> 5) == 5 && (1UL << (24) & 0)) | |
97 | || ((((24)) >> 5) == 6 && (1UL << (24) & 0)) | |
98 | || ((((24)) >> 5) == 7 && (1UL << (24) & 0)) | |
99 | || ((((24)) >> 5) == 8 && (1UL << (24) & 0)) | |
100 | || ((((24)) >> 5) == 9 | |
101 | && (1UL << (24) & 0))) ? 1 | |
102 | : (__builtin_constant_p(((24))) ? | |
103 | constant_test_bit(((24)), | |
104 | ((unsigned long *)((&boot_cpu_data)-> | |
105 | x86_capability))) : | |
106 | variable_test_bit(((24)), | |
107 | ((unsigned long *)((&boot_cpu_data)-> | |
108 | x86_capability))))) : | |
109 | __builtin_constant_p((24)) ? __static_cpu_has((24)) | |
110 | : (__builtin_constant_p((24)) | |
111 | && | |
112 | (((((24)) >> 5) == 0 | |
113 | && (1UL << (24) & | |
114 | ((1 << (0 & 31)) | (1 << ((6) & 31)) | | |
115 | (1 << ((8) & 31)) | (1 << ((15) & 31)) | 0))) | |
116 | || ((((24)) >> 5) == 1 && (1UL << (24) & 0)) | |
117 | || ((((24)) >> 5) == 2 && (1UL << (24) & 0)) | |
118 | || ((((24)) >> 5) == 3 && (1UL << (24) & 0)) | |
119 | || ((((24)) >> 5) == 4 && (1UL << (24) & 0)) | |
120 | || ((((24)) >> 5) == 5 && (1UL << (24) & 0)) | |
121 | || ((((24)) >> 5) == 6 && (1UL << (24) & 0)) | |
122 | || ((((24)) >> 5) == 7 && (1UL << (24) & 0)) | |
123 | || ((((24)) >> 5) == 8 && (1UL << (24) & 0)) | |
124 | || ((((24)) >> 5) == 9 | |
125 | && (1UL << (24) & 0))) ? 1 | |
126 | : (__builtin_constant_p(((24))) ? | |
127 | constant_test_bit(((24)), | |
128 | ((unsigned long *)((&boot_cpu_data)-> | |
129 | x86_capability))) : | |
130 | variable_test_bit(((24)), | |
131 | ((unsigned long *)((&boot_cpu_data)-> | |
132 | x86_capability)))))); | |
133 | } | |
134 | ||
135 | static inline __attribute__ ((always_inline)) | |
136 | void fpu_save_init(struct fpu *fpu) | |
137 | { | |
138 | if (__builtin_constant_p(use_xsave())? use_xsave() : use_xsave()) { | |
139 | if (__builtin_constant_p | |
140 | (((!(fpu->state->xsave.xsave_hdr. | |
141 | xstate_bv & 0x1)))) ? ! !((!(fpu->state->xsave. | |
142 | xsave_hdr. | |
143 | xstate_bv & 0x1))) : ( { | |
144 | ! !((!(fpu->state->xsave.xsave_hdr.xstate_bv & 0x1)));} | |
145 | )) | |
146 | return; | |
147 | } else if (use_fxsr()) { | |
148 | } | |
149 | if (__builtin_constant_p | |
150 | ((((__builtin_constant_p(fpu->state->fxsave.swd & (1 << 7)) ? | |
151 | ! !(fpu->state->fxsave.swd & (1 << 7)) : ( { | |
152 | __builtin_expect(! ! | |
153 | (fpu-> | |
154 | state-> | |
155 | fxsave. | |
156 | swd | |
157 | & (1 | |
158 | << | |
159 | 7)), | |
160 | 1);} | |
161 | )))))? | |
162 | ! !(((__builtin_constant_p(fpu->state->fxsave.swd & (1 << 7)) ? | |
163 | ! !(fpu->state->fxsave.swd & (1 << 7)) : ( { | |
164 | __builtin_expect(! ! | |
165 | (fpu-> | |
166 | state-> | |
167 | fxsave. | |
168 | swd | |
169 | & | |
170 | (1 | |
171 | << | |
172 | 7)), | |
173 | 1);} | |
174 | )))): ( { | |
175 | int ______r; | |
176 | ______r = | |
177 | ! !(((__builtin_constant_p(fpu->state->fxsave.swd & (1 << 7)) | |
178 | ? ! !(fpu->state->fxsave.swd & (1 << 7)) : ( { | |
179 | ______r = | |
180 | __builtin_expect | |
181 | (! ! | |
182 | (fpu-> | |
183 | state-> | |
184 | fxsave. | |
185 | swd & (1 | |
186 | << | |
187 | 7)), | |
188 | 1);} | |
189 | ))));} | |
190 | )) | |
191 | asm volatile ("fnclex"); | |
192 | } | |
193 | ||
194 | static __attribute__ ((always_inline)) | |
195 | void __save_init_fpu(void) | |
196 | { | |
197 | fpu_save_init(0); | |
198 | } | |
199 | ||
200 | static __attribute__ ((always_inline)) | |
201 | void kernel_fpu_begin(void) | |
202 | { | |
203 | __save_init_fpu(); | |
204 | } | |
205 | ||
206 | static void aes_decrypt(void) | |
207 | { | |
208 | if (!irq_fpu_usable()) | |
209 | crypto_aes_decrypt_x86(0); | |
210 | else | |
211 | kernel_fpu_begin(); | |
212 | } | |
213 | ||
214 | static struct crypto_alg aesni_alg = { | |
215 | .cra_list = { | |
216 | &aesni_alg.cra_list, &aesni_alg.cra_list} | |
217 | ,.cra_u = { | |
218 | .cipher = { | |
219 | .cia_decrypt = aes_decrypt} | |
220 | } | |
221 | }; | |
222 | ||
223 | static struct crypto_alg ablk_ecb_alg = { | |
224 | }; | |
225 | ||
226 | int aesni_init(void) | |
227 | { | |
228 | if (! !crypto_register_alg(&aesni_alg)) | |
229 | crypto_unregister_alg(&ablk_ecb_alg); | |
230 | } |