3rd-party/linux-kernel-module-cheat
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Ciro Santilli
2018-04-13 14:17:10 +01:00
parent 898e945e6c
commit 7b0bd10c0b
5 changed files with 111 additions and 2 deletions
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56
kernel_module/ring0.h Normal file
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@@ -0,0 +1,56 @@
#if defined(__x86_64__) || defined(__i386__)
#ifdef THIS_MODULE
#include <linux/kernel.h>
#if defined(__x86_64__)
typedef u64 T;
#elif defined(__i386__)
typedef u32 T;
#endif
#else
#include <stdint.h>
#if defined(__x86_64__)
typedef uint64_t T;
#elif defined(__i386__)
typedef uint32_t T;
#endif
#endif
typedef struct {
T cr0;
T cr2;
T cr3;
} Ring0Regs;
void ring0_get_control_regs(Ring0Regs *ring0_regs)
{
#ifdef __x86_64__
__asm__ __volatile__ (
"mov %%cr0, %%rax\n\t"
"mov %%eax, %0\n\t"
"mov %%cr2, %%rax\n\t"
"mov %%eax, %1\n\t"
"mov %%cr3, %%rax\n\t"
"mov %%eax, %2\n\t"
: "=m" (ring0_regs->cr0),
"=m" (ring0_regs->cr2),
"=m" (ring0_regs->cr3)
: /* no input */
: "%rax"
);
#elif defined(__i386__)
__asm__ __volatile__ (
"mov %%cr0, %%eax\n\t"
"mov %%eax, %0\n\t"
"mov %%cr2, %%eax\n\t"
"mov %%eax, %1\n\t"
"mov %%cr3, %%eax\n\t"
"mov %%eax, %2\n\t"
: "=m" (ring0_regs->cr0),
"=m" (ring0_regs->cr2),
"=m" (ring0_regs->cr3)
: /* no input */
: "%eax"
);
#endif
}