从共享对象文件(.so)获取函数返回类型和参数

readelf -s <shared_object_file>

#include <dlfcn.h>
#include <stdio.h>

int main() {
    void* handle = dlopen("<shared_object_file>", RTLD_LAZY);
    if (handle == NULL) {
        printf("Failed to open shared object file.\n");
        return 1;
    }

    // Get function pointer
    void* func_ptr = dlsym(handle, "<function_name>");
    if (func_ptr == NULL) {
        printf("Failed to get function pointer.\n");
        dlclose(handle);
        return 1;
    }

    // Get function signature
    // Assuming the function has the signature: int func_name(int, float)
    typedef int (*FuncType)(int, float);
    FuncType func = (FuncType)func_ptr;

    // Print return type and parameter types
    printf("Return type: int\n");
    printf("Parameter types: int, float\n");

    dlclose(handle);
    return 0;
}

import ctypes

# Load shared object file
lib = ctypes.CDLL("<shared_object_file>")

# Get function pointer
func_ptr = getattr(lib, "<function_name>")

# Get function signature
# Assuming the function has the signature: int func_name(int, float)
func = ctypes.CFUNCTYPE(ctypes.c_int, ctypes.c_int, ctypes.c_float)(func_ptr)

# Print return type and parameter types
print("Return type: int")
print("Parameter types: int, float")