Rev 3707 | Show entire file | Regard whitespace | Details | Blame | Last modification | View Log | RSS feed
Rev 3707 | Rev 4016 | ||
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Line 70... | Line 70... | ||
70 | }; |
70 | }; |
71 | 71 | ||
72 | void fpu_disable(void) |
72 | void fpu_disable(void) |
73 | { |
73 | { |
74 | asm volatile ( |
74 | asm volatile ( |
75 | "mov %%cr0,%%eax;" |
75 | "mov %%cr0, %%eax\n" |
76 | "or $8,%%eax;" |
76 | "or $8, %%eax\n" |
77 | "mov %%eax,%%cr0;" |
77 | "mov %%eax, %%cr0\n" |
78 | : |
- | |
79 | : |
- | |
80 | : "%eax" |
78 | ::: "%eax" |
81 | ); |
79 | ); |
82 | } |
80 | } |
83 | 81 | ||
84 | void fpu_enable(void) |
82 | void fpu_enable(void) |
85 | { |
83 | { |
86 | asm volatile ( |
84 | asm volatile ( |
87 | "mov %%cr0,%%eax;" |
85 | "mov %%cr0, %%eax\n" |
88 | "and $0xffFFffF7,%%eax;" |
86 | "and $0xffFFffF7, %%eax\n" |
89 | "mov %%eax,%%cr0;" |
87 | "mov %%eax,%%cr0\n" |
90 | : |
- | |
91 | : |
- | |
92 | : "%eax" |
88 | ::: "%eax" |
93 | ); |
89 | ); |
94 | } |
90 | } |
95 | 91 | ||
96 | void cpu_arch_init(void) |
92 | void cpu_arch_init(void) |
97 | { |
93 | { |
Line 115... | Line 111... | ||
115 | else |
111 | else |
116 | fpu_fsr(); |
112 | fpu_fsr(); |
117 | 113 | ||
118 | if (fi.bits.sse) { |
114 | if (fi.bits.sse) { |
119 | asm volatile ( |
115 | asm volatile ( |
120 | "mov %%cr4,%0\n" |
116 | "mov %%cr4, %[help]\n" |
121 | "or %1,%0\n" |
117 | "or %[mask], %[help]\n" |
122 | "mov %0,%%cr4\n" |
118 | "mov %[help], %%cr4\n" |
123 | : "+r" (help) |
119 | : [help] "+r" (help) |
124 | : "i" (CR4_OSFXSR_MASK|(1<<10)) |
120 | : [mask] "i" (CR4_OSFXSR_MASK | (1 << 10)) |
125 | ); |
121 | ); |
126 | } |
122 | } |
127 | 123 | ||
128 | /* Setup fast SYSENTER/SYSEXIT syscalls */ |
124 | /* Setup fast SYSENTER/SYSEXIT syscalls */ |
129 | syscall_setup_cpu(); |
125 | syscall_setup_cpu(); |