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#ifndef DEF_V86THREAD_CLASS_H
#define DEF_V86THREAD_CLASS_H
#include <TaskManager/Thread.class.h>
typedef u32int FARPTR;
#define MK_FP(seg, off) ((FARPTR)(((u32int)(seg) << 16) | (u16int) (off)))
#define FP_SEG(fp) (((FARPTR)fp) >> 16)
#define FP_OFF(fp) (((FARPTR)fp) & 0xFFFF)
#define FP_TO_LINEAR(seg, off) ((void*)((((u16int)(seg)) << 4) + ((u16int)(off))))
inline FARPTR LINEAR_TO_FP(void* ptr) {
u32int seg, off;
off = ((size_t) ptr) & 0xF;
seg = ((size_t) ptr - ((size_t) ptr & 0xF)) / 16;
return MK_FP(seg, off);
}
struct v86_retval_t {
registers_t regs;
bool finished;
};
struct v86_function_t {
u16int size;
u8int data[];
};
#define V86_STACKSIZE 1024
// (in segments)
#define V86_ALLOC_START 0x1000
#define V86_ALLOC_END 0x9000
#define EFLAGS_IF 0x200
#define EFLAGS_VM 0x20000
#define VALID_FLAGS 0xDFF
class V86Thread : public Thread {
private:
V86Thread();
V86Thread(V86Thread&);
v86_retval_t* m_ret;
bool m_if; //V86 IF flag
static u16int allocSeg;
static u16int alloc(u16int length); //Returns a segment number
static void runV86(V86Thread* t, u32int data, u32int ss, u32int cs);
public:
V86Thread(v86_function_t* entry, v86_retval_t* ret, u32int data);
bool handleV86GPF(registers_t *regs);
void handleException(registers_t *regs, int no);
};
#endif
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