Function report |
Source Code:arch\x86\boot\cpuflags.c |
Create Date:2022-07-28 07:26:35 |
Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
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Annotation kernel can get tool activity | Download SCCT | Chinese |
Name:get_cpuflags
Proto:void get_cpuflags(void)
Type:void
Parameter:Nothing
93 | If loaded_flags Then Return |
95 | loaded_flags = true |
97 | If has_fpu() Then Atomically set a bit in memory |
100 | If has_eflag(X86_EFLAGS_ID) Then |
101 | cpuid(0x0, & max_intel_level, & cpu_vendor[0], & cpu_vendor[2], & cpu_vendor[1]) |
104 | If max_intel_level >= 0x00000001 && max_intel_level <= 0x0000ffff Then |
115 | If max_intel_level >= 0x00000007 Then |
116 | cpuid_count(0x00000007, 0, & ignored, & ignored, & flags[16], & ignored) |
120 | cpuid(0x80000000, & max_amd_level, & ignored, & ignored, & ignored) |
123 | If max_amd_level >= 0x80000001 && max_amd_level <= 0x8000ffff Then |
Name | Describe |
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check_cpu | Returns -1 on error.* *cpu_level is set to the current CPU level; *req_level to the required* level. x86-64 is considered level 64 for this purpose.* *err_flags_ptr is set to the flags error array if there are flags missing. |
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