emcyfra/runner.c

#include <platform/platform.h>
#include <platform/printf.h>
#include <stdint.h>

#define RAM_START 0x00300000
#define RAM_END RAM_START + 0x00800000
#define LIB_MAGIC 0x88DAD0F2

typedef int (*func_t)();

void execute_library_function() {
    printf("Scanning RAM...\n");
    uint32_t *ptr = (uint32_t *)RAM_START;

    while ((uint32_t)ptr < RAM_END) {
        if (*ptr == LIB_MAGIC) {
            printf("Found libpqscheme_test 0x%X!\n", ptr);

            printf("1>...%X 0x%X\n", ptr + 1, *(ptr + 1));
            printf("2>...%X 0x%X\n", ptr + 2, *(ptr + 2));
            printf("3>...%X 0x%X\n", ptr + 3, *(ptr + 3));

            for (size_t i = 0; i < 20; i++) {
                printf("%X %2X \n", (((uint8_t *)ptr) + i),
                       *(((uint8_t *)ptr) + i));
            }

            /*
            uint32_t entry_point = *((uint32_t *)(ptr + 0x10));
            uint8_t *p           = (uint8_t *)entry_point;
            printf("\n");

            func_t test_func = (func_t)entry_point;
            if (test_func) {
                printf("Try exec...0x%X 0x%X\n", entry_point,
                       0x20000034 + 0x10);
                printf(">> %d\n", test_func());
            }
            */
            uint32_t entry_point = 0x300044 | 1;
            func_t test_func     = (func_t)entry_point;
            printf("> Entry point\n", entry_point);
            int res = test_func();
            printf(">>  %d\n", res);
            return;
        }
        ptr++;
    }

    printf("Test binary not found!\n");
}

void main() {
    platform_init(PLATFORM_CLOCK_MAX);
    platform_sync();

    printf("Runner started\n");
    execute_library_function();
    printf("Execution finished\n");
}