/* Added by FredyGames: the devkitPro libsysbase is not available in our toolchain, so the newlib system
   calls the C library links against are stubbed (the game does no file or console I/O). */
#include <errno.h>
#include <stddef.h>
#include <sys/stat.h>

void *fake_heap_end = 0;

static char heap_area[8192] __attribute__((aligned(4)));
static size_t heap_used;

void *_sbrk(ptrdiff_t incr) {
    if (heap_used + (size_t)incr > sizeof heap_area) {
        errno = ENOMEM;
        return (void *)-1;
    }
    void *p = heap_area + heap_used;
    heap_used += (size_t)incr;
    return p;
}

int _close(int fd) { (void)fd; errno = EBADF; return -1; }
int _fstat(int fd, struct stat *st) { (void)fd; st->st_mode = S_IFCHR; return 0; }
int _isatty(int fd) { (void)fd; return 1; }
int _lseek(int fd, int off, int whence) { (void)fd; (void)off; (void)whence; return 0; }
int _read(int fd, char *buf, int len) { (void)fd; (void)buf; (void)len; return 0; }
int _write(int fd, char *buf, int len) { (void)fd; (void)buf; return len; }
int _getpid(void) { return 1; }
int _kill(int pid, int sig) { (void)pid; (void)sig; errno = EINVAL; return -1; }
void _exit(int code) { (void)code; for (;;) {} }