89 lines
1.5 KiB
C
89 lines
1.5 KiB
C
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#include <sys/stat.h>
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#include "hal.h"
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int _fstat(int fd, struct stat *st) {
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if (fd < 0) return -1;
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st->st_mode = S_IFCHR;
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return 0;
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}
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void *_sbrk(int incr) {
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extern char _end;
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static unsigned char *heap = NULL;
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unsigned char *prev_heap;
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unsigned char x = 0, *heap_end = (unsigned char *)((size_t) &x - 512);
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(void) x;
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if (heap == NULL) heap = (unsigned char *) &_end;
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prev_heap = heap;
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if (heap + incr > heap_end) return (void *) -1;
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heap += incr;
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return prev_heap;
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}
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int _open(const char *path) {
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(void) path;
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return -1;
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}
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int _close(int fd) {
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(void) fd;
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return -1;
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}
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int _isatty(int fd) {
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(void) fd;
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return 1;
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}
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int _lseek(int fd, int ptr, int dir) {
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(void) fd, (void) ptr, (void) dir;
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return 0;
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}
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void _exit(int status) {
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(void) status;
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for (;;) asm volatile("BKPT #0");
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}
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void _kill(int pid, int sig) {
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(void) pid, (void) sig;
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}
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int _getpid(void) {
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return -1;
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}
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int _write(int fd, char *ptr, int len) {
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(void) fd, (void) ptr, (void) len;
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if (fd == 1) uart_write_buf(UART_DEBUG, ptr, (size_t) len);
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return -1;
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}
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int _read(int fd, char *ptr, int len) {
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(void) fd, (void) ptr, (void) len;
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return -1;
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}
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int _link(const char *a, const char *b) {
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(void) a, (void) b;
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return -1;
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}
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int _unlink(const char *a) {
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(void) a;
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return -1;
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}
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int _stat(const char *path, struct stat *st) {
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(void) path, (void) st;
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return -1;
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}
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int mkdir(const char *path, mode_t mode) {
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(void) path, (void) mode;
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return -1;
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}
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void _init(void) {}
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