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Make sure wut_get_thread_specific has been overriden properly

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This commit is contained in:
Maschell 2023-07-19 14:55:33 +02:00
parent 0df3dd8066
commit 80a9893f56
3 changed files with 43 additions and 26 deletions
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11
include/wups/hooks.h
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@ -170,9 +170,20 @@ typedef struct wups_loader_hook_t {
} \
WUPS_HOOK_EX(WUPS_LOADER_HOOK_FINI_WUT_STDCPP, on_fini_wut_stdcpp)
#ifdef __cplusplus
extern "C" uint32_t __attribute__((weak)) wut_get_thread_specific(int id);
extern "C" const char wups_meta_info_linking_order[];
#else
extern uint32_t __attribute__((weak)) wut_get_thread_specific(int id);
extern const char wups_meta_info_linking_order[];
#endif
#define WUPS___INIT_WRAPPER() \
__EXTERN_C_MACRO void __init(); \
void __init_wrapper() { \
if (wut_get_thread_specific(0x13371337) != 0x42424242) { \
OSFatal(wups_meta_info_linking_order); \
} \
__init(); \
} \
WUPS_HOOK_EX(WUPS_LOADER_HOOK_INIT_WRAPPER, __init_wrapper);

6
include/wups/meta.h
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@ -59,7 +59,11 @@ extern "C" {
extern const char wups_meta_info_dump[] WUPS_SECTION("meta"); \
const char wups_meta_info_dump[] = "(plugin: " __plugin_name ";" \
"wups " WUPS_VERSION_STR ";" \
"buildtime: " __DATE__ " " __TIME__ ")"
"buildtime: " __DATE__ " " __TIME__ ")"; \
extern const char wups_meta_info_linking_order[] WUPS_SECTION("meta"); \
const char wups_meta_info_linking_order[] = "Loading \"" __plugin_name "\" failed.\n" \
"Function \"wut_get_thread_specific\" returned unexpected value.\n" \
"Please check linking order (expected \"-lwups -lwut\")";
#define WUPS_PLUGIN_AUTHOR(x) WUPS_META(author, x)
#define WUPS_PLUGIN_VERSION(x) WUPS_META(version, x)

2
libraries/libwups/wups_thread_specific.cpp
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@ -43,6 +43,8 @@ void *wups_get_thread_specific(__wut_thread_specific_id id) {
return thread->reserved[3];
} else if (id == WUT_THREAD_SPECIFIC_1) {
return thread->reserved[4];
} else if ((uint32_t) id == 0x13371337) { // Mechanism to detect if the function was overridden properly
return (void *) 0x42424242;
} else {
OSReport("[%s] wups_get_thread_specific: invalid id\n", wups_meta_info_dump);
OSFatal("wups_get_thread_specific: invalid id");