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Sync detour.h with upstream 

Add GET_ORIGINAL()
This commit is contained in:
8dcc 2023-07-26 13:35:11 +02:00
parent 684f950509
commit dbc12b6fb5
1 changed files with 21 additions and 5 deletions
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26
src/include/detour.h
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@ -34,14 +34,30 @@ bool detour_del(detour_data_t* d);
/*----------------------------------------------------------------------------*/
/* Declare the type for the original function */
#define DECL_DETOUR_TYPE(funcRet, funcName, ...) \
typedef funcRet (*funcName##_t)(__VA_ARGS__);
#define DECL_DETOUR_TYPE(funcRet, newTypeName, ...) \
typedef funcRet (*newTypeName##_t)(__VA_ARGS__);
/* Reset original bytes, call original, detour again. detourData is NOT a ptr */
#define CALL_ORIGINAL(detourData, funcName, ...) \
/* Reset original bytes, call original, detour again.
* Keep in mind that:
* - The returned value of the original function is not stored. If the
* function is not void, and you care about the return value, use
* GET_ORIGINAL() instead.
* - detourData is NOT a pointer, it expects the full struct
* - funcType should be the same name passed to DECL_DETOUR_TYPE, without the
* ending added by the macro ("_t") */
#define CALL_ORIGINAL(detourData, funcType, ...) \
{ \
detour_del(&detourData); \
((funcName##_t)detourData.orig)(__VA_ARGS__); \
((funcType##_t)detourData.orig)(__VA_ARGS__); \
detour_add(&detourData); \
}
/* Same as CALL_ORIGINAL, but accepts an extra parameter for storing the
* returned value of the original function */
#define GET_ORIGINAL(detourData, returnVar, funcType, ...) \
{ \
detour_del(&detourData); \
returnVar = ((funcType##_t)detourData.orig)(__VA_ARGS__); \
detour_add(&detourData); \
}