emcyfra/runner.c

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

#define RAM_START 0x20000000
#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;
    uint32_t entry_point;

    while ((uint32_t)ptr < RAM_END) {
        if (*ptr == LIB_MAGIC) {
            printf("Found libpqscheme_test 0x%X!\n", ptr);
            entry_point = (*(ptr + 1));
            printf("Calling function at 0x%X\n", entry_point);
            entry_point      |= 1;  // Ensure thumb mod
            func_t test_func = (func_t)(entry_point);
            if (test_func) {
                printf("Result: %d\n", test_func());
            }
            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");
}