mirror of
https://github.com/cirosantilli/linux-kernel-module-cheat.git
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59 lines
1.1 KiB
C
59 lines
1.1 KiB
C
#if defined(__x86_64__) || defined(__i386__)
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#ifdef THIS_MODULE
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#include <linux/kernel.h>
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#if defined(__x86_64__)
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typedef u64 T;
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#elif defined(__i386__)
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typedef u32 T;
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#endif
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#else
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#include <stdint.h>
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#if defined(__x86_64__)
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typedef uint64_t T;
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#elif defined(__i386__)
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typedef uint32_t T;
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#endif
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#endif
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typedef struct {
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T cr0;
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T cr2;
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T cr3;
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} Ring0Regs;
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void ring0_get_control_regs(Ring0Regs *ring0_regs)
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{
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#if defined(__x86_64__)
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__asm__ __volatile__ (
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"mov %%cr0, %%rax;"
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"mov %%eax, %0;"
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"mov %%cr2, %%rax;"
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"mov %%eax, %1;"
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"mov %%cr3, %%rax;"
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"mov %%eax, %2;"
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: "=m" (ring0_regs->cr0),
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"=m" (ring0_regs->cr2),
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"=m" (ring0_regs->cr3)
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:
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: "%rax"
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);
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#elif defined(__i386__)
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__asm__ __volatile__ (
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"mov %%cr0, %%eax;"
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"mov %%eax, %0;"
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"mov %%cr2, %%eax;"
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"mov %%eax, %1;"
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"mov %%cr3, %%eax;"
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"mov %%eax, %2;"
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: "=m" (ring0_regs->cr0),
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"=m" (ring0_regs->cr2),
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"=m" (ring0_regs->cr3)
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:
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: "%eax"
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);
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#endif
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}
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#endif
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