137 lines
4.3 KiB
C++
137 lines
4.3 KiB
C++
#pragma once
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#ifdef __cplusplus
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// Patching Functions
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#ifdef REBORN_HAS_PATCH_CODE
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void reborn_init_patch();
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// Replace Call Located At start With A Call To target
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void _overwrite_call(const char *file, int line, void *start, void *target);
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#define overwrite_call(...) \
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_overwrite_call(__FILE__, __LINE__, __VA_ARGS__)
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// Make Sure Function Is Only Called Once
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template <int>
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static void _only_call_once() {
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static bool _has_run = false;
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if (_has_run) {
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IMPOSSIBLE();
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}
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_has_run = true;
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}
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// Replace All Calls To Method start With target
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void *_overwrite_calls_manual(const char *file, int line, void *start, void *target);
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#define overwrite_calls_manual(...) \
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_overwrite_calls_manual(__FILE__, __LINE__, __VA_ARGS__)
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template <int call_id, typename start_t, typename overwrite_t>
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static void _overwrite_calls(const char *file, int line, start_t (*create_helper)(overwrite_t, start_t), start_t &start, overwrite_t target) {
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_only_call_once<call_id>();
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start_t helper = create_helper(target, start);
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start = (start_t) _overwrite_calls_manual(file, line, (void *) start, (void *) helper);
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}
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#define overwrite_calls(start, ...) \
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_overwrite_calls< \
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__COUNTER__, \
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start##_t, \
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__overwrite_##start##_t \
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>( \
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__FILE__, __LINE__, \
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__create_overwrite_helper_for_##start, \
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start, \
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__VA_ARGS__ \
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)
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// Replace All Calls To Virtual Method start With target
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template <int call_id, typename start_t, typename overwrite_t>
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static void _overwrite_virtual_calls(const char *file, int line, start_t (*create_helper)(overwrite_t, start_t), bool (*is_overwritable)(), start_t start, overwrite_t target) {
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_only_call_once<call_id>();
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if (!is_overwritable()) {
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ERR("Virtual Method Is Not Overwritable");
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}
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start_t helper = create_helper(target, start);
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_overwrite_calls_manual(file, line, (void *) start, (void *) helper);
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}
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#define overwrite_virtual_calls(start, ...) \
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_overwrite_virtual_calls< \
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__COUNTER__, \
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start##_t, \
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__overwrite_##start##_t \
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>( \
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__FILE__, __LINE__, \
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__create_overwrite_helper_for_##start, \
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__is_overwritable_##start, \
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*start##_vtable_addr, \
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__VA_ARGS__ \
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)
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// Replace All Calls To start With target Within [to, from)
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void _overwrite_calls_within_manual(const char *file, int line, void *from, void *to, void *start, void *target);
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#define overwrite_calls_within_manual(...) \
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_overwrite_calls_within(__FILE__, __LINE__, __VA_ARGS__)
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template <typename start_t>
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void _overwrite_calls_within(const char *file, int line, void *from, void *to, start_t start, start_t target) {
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_overwrite_calls_within_manual(file, line, from, to, (void *) start, (void *) target);
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}
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#define overwrite_calls_within(from, to, start, ...) \
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_overwrite_calls_within< \
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start##_t \
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>( \
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__FILE__, __LINE__, \
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from, to, \
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start, \
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__VA_ARGS__ \
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)
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// Get Target Address From BL Instruction
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void *extract_from_bl_instruction(unsigned char *from);
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// Replace Method start With target
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void _overwrite_manual(const char *file, int line, void *start, void *target);
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#define overwrite_manual(...) \
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_overwrite(__FILE__, __LINE__, __VA_ARGS__)
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template <typename start_t>
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void _overwrite(const char *file, int line, start_t start, start_t target) {
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_overwrite_manual(file, line, (void *) start, (void *) target);
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}
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#define overwrite(start, ...) \
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_overwrite< \
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start##_t \
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>( \
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__FILE__, __LINE__, \
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start, \
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__VA_ARGS__ \
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)
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// Patch Instruction
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void _patch(const char *file, int line, void *start, unsigned char patch[4]);
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#define patch(...) \
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_patch(__FILE__, __LINE__, __VA_ARGS__)
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// Patch 4 Bytes Of Data
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void _patch_address(const char *file, int line, void *start, void *target);
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#define patch_address(...) \
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_patch_address(__FILE__, __LINE__, __VA_ARGS__)
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// Patch VTable Entry
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// This does not affect sub-classes.
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template <typename start_t>
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void _patch_vtable(const char *file, int line, start_t *start, start_t target) {
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_patch_address(file, line, (void *) start, (void *) target);
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}
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#define patch_vtable(start, ...) \
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_patch_vtable< \
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start##_t \
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>( \
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__FILE__, __LINE__, \
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start##_vtable_addr, \
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__VA_ARGS__ \
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)
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#endif
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#endif
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