41 lines
911 B
C
41 lines
911 B
C
#ifndef __ASM_H__
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#define __ASM_H__
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#define OP_JMP 0xE9
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#define OP_JMP_SIZE 5
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#define OP_NOP 0x90
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#define OP_NOP_SIZE 1
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#define OP_PREFIX 0xFF
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#define OP_JMP_SEG 0x25
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#define OP_JMP_BYTE 0xEB
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#define OP_JMP_BYTE_SIZE 2
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#ifdef __cplusplus
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extern "C" {
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#endif
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void check_thunks(unsigned char *dest, unsigned char *pc);
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//if dest is NULL, returns minimum number of bytes needed to be copied
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//if dest is not NULL, it will copy the bytes to dest as well as fix CALLs and JMPs
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//http://www.devmaster.net/forums/showthread.php?t=2311
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int copy_bytes(unsigned char *func, unsigned char* dest, int required_len);
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//insert a specific JMP instruction at the given location
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void inject_jmp(void* src, void* dest);
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//fill a given block with NOPs
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void fill_nop(void* src, unsigned int len);
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//evaluate a JMP at the target
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void* eval_jump(void* src);
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#ifdef __cplusplus
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}
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#endif
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#endif //__ASM_H__
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