minecraft-pi-reborn/libreborn/include/libreborn/patch.h

67 lines
2.3 KiB
C

#pragma once
#ifdef __cplusplus
extern "C" {
#endif
// Patching Functions
#ifdef REBORN_HAS_PATCH_CODE
void reborn_init_patch();
void _overwrite_call(const char *file, int line, void *start, void *target);
#define overwrite_call(start, target) _overwrite_call(__FILE__, __LINE__, start, target)
#define _setup_fancy_overwrite(start, name, target) \
if (!_is_new_method_##name()) { \
ERR("Method Is Not \"New\""); \
} \
static name##_t _original_for_##target = start; \
static name##_t _helper_for_##target = _overwrite_helper_for_##name(target, _original_for_##target)
#define _update_references(from, to) \
{ \
void *old_reference = (void *) from; \
for (int i = 0; _all_method_symbols[i] != nullptr; i++) { \
if (_all_method_symbols[i] == old_reference) { \
_all_method_symbols[i] = (void *) to; \
} \
} \
}
void _overwrite_calls(const char *file, int line, void *start, void *target);
#define overwrite_calls_manual(start, target) _overwrite_calls(__FILE__, __LINE__, start, target)
#define overwrite_calls(start, target) \
{ \
_setup_fancy_overwrite(start, start, target); \
overwrite_calls_manual((void *) start, (void *) _helper_for_##target); \
_update_references(start, _helper_for_##target); \
}
#define overwrite_virtual_calls(start, target) \
{ \
_setup_fancy_overwrite(*start##_vtable_addr, start, target); \
overwrite_calls_manual((void *) *start##_vtable_addr, (void *) _helper_for_##target); \
}
void _overwrite_calls_within(const char *file, int line, void *from, void *to, void *start, void *target);
#define overwrite_calls_within(from, to, start, target) _overwrite_calls_within(__FILE__, __LINE__, from, to, start, target)
void *extract_from_bl_instruction(unsigned char *from);
void _overwrite(const char *file, int line, void *start, void *target);
#define overwrite(start, target) _overwrite(__FILE__, __LINE__, (void *) start, (void *) target)
void _patch(const char *file, int line, void *start, unsigned char patch[4]);
#define patch(start, patch) _patch(__FILE__, __LINE__, start, patch)
void _patch_address(const char *file, int line, void *start, void *target);
#define patch_address(start, target) _patch_address(__FILE__, __LINE__, (void *) start, (void *) target)
#endif
#ifdef __cplusplus
}
#endif