typedef struct CALLGATE_DESCRIPTOR { USHORT offset_0_15; (2) USHORT selector; UCHAR param_count : 4; UCHAR some_bits : 4; UCHAR type : 4; UCHAR app_system : 1; UCHAR dpl : 2; UCHAR present : 1; USHORT offset_16_31(3);
ULONG Gdtbase() { char gdt[6] ; ULONG base; __asm sgdt gdt; base=*(ULONG *)(&gdt[2]); DbgPrint("base 0x%x\n",base); return base; }
CALLGATE_DESCRIPTOR cg; cg.selector=0x8; cg.param_count=0; cg.type=0x3; cg.dpl=0x3; cg.offset_0_15=0xffff&Address; cg.offset_16_31=Address>>16; return cg;
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