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| Rev 1019 | Rev 1187 | ||
|---|---|---|---|
| Line 85... | Line 85... | ||
| 85 | : |
85 | : |
| 86 | :"%eax" |
86 | :"%eax" |
| 87 | ); |
87 | ); |
| 88 | } |
88 | } |
| 89 | 89 | ||
| 90 | - | ||
| 91 | - | ||
| 92 | - | ||
| 93 | void cpu_arch_init(void) |
90 | void cpu_arch_init(void) |
| 94 | { |
91 | { |
| - | 92 | cpuid_feature_info fi; |
|
| - | 93 | cpuid_extended_feature_info efi; |
|
| - | 94 | cpu_info_t info; |
|
| 95 | __u32 help=0; |
95 | __u32 help = 0; |
| 96 | 96 | ||
| 97 | CPU->arch.tss = tss_p; |
97 | CPU->arch.tss = tss_p; |
| 98 | CPU->fpu_owner=NULL; |
98 | CPU->arch.tss->iomap_base = &CPU->arch.tss->iomap[0] - ((__u8 *) CPU->arch.tss); |
| 99 | 99 | ||
| 100 | cpuid_feature_info fi; |
100 | CPU->fpu_owner = NULL; |
| 101 | cpuid_extended_feature_info efi; |
- | |
| 102 | 101 | ||
| 103 | cpu_info_t info; |
- | |
| 104 | cpuid(1, &info); |
102 | cpuid(1, &info); |
| 105 | 103 | ||
| 106 | fi.word=info.cpuid_edx; |
104 | fi.word = info.cpuid_edx; |
| 107 | efi.word=info.cpuid_ecx; |
105 | efi.word = info.cpuid_ecx; |
| 108 | 106 | ||
| 109 | if(fi.bits.fxsr) fpu_fxsr(); |
107 | if (fi.bits.fxsr) |
| 110 | else fpu_fsr(); |
108 | fpu_fxsr(); |
| 111 | 109 | else |
|
| 112 | if(fi.bits.sse) asm volatile ( |
- | |
| 113 | "mov %%cr4,%0;\n" |
- | |
| 114 | "or %1,%0;\n" |
- | |
| 115 | "mov %0,%%cr4;\n" |
- | |
| 116 | :"+r"(help) |
110 | fpu_fsr(); |
| 117 | :"i"(CR4_OSFXSR_MASK|(1<<10)) |
- | |
| 118 | ); |
- | |
| 119 | 111 | ||
| - | 112 | if (fi.bits.sse) { |
|
| - | 113 | asm volatile ( |
|
| - | 114 | "mov %%cr4,%0\n" |
|
| - | 115 | "or %1,%0\n" |
|
| - | 116 | "mov %0,%%cr4\n" |
|
| - | 117 | : "+r" (help) |
|
| - | 118 | : "i" (CR4_OSFXSR_MASK|(1<<10)) |
|
| - | 119 | ); |
|
| - | 120 | } |
|
| 120 | } |
121 | } |
| 121 | 122 | ||
| 122 | - | ||
| 123 | void cpu_identify(void) |
123 | void cpu_identify(void) |
| 124 | { |
124 | { |
| 125 | cpu_info_t info; |
125 | cpu_info_t info; |
| 126 | 126 | ||
| 127 | CPU->arch.vendor = VendorUnknown; |
127 | CPU->arch.vendor = VendorUnknown; |