Cleanup stubs so that LTO can be used on Pinecil

workspace/TS100/Core/Src/syscalls.c

@@ -8,16 +8,6 @@
 #include <sys/time.h>
 #include <sys/times.h>
 
-/* Variables */
-//#undef errno
-extern int errno;
-extern int __io_putchar(int ch) __attribute__((weak));
-extern int __io_getchar(void) __attribute__((weak));
-
-register char *stack_ptr asm("sp");
-
-char *__env[1] = { 0 };
-char **environ = __env;
 
 /* Functions */
 void initialise_monitor_handles() {
@@ -27,88 +17,3 @@ int _getpid(void) {
 	return 1;
 }
 
-int _kill(int pid, int sig) {
-	errno = EINVAL;
-	return -1;
-}
-
-void _exit(int status) {
-	_kill(status, -1);
-	while (1) {
-	} /* Make sure we hang here */
-}
-
-__attribute__((weak)) int _read(int file, char *ptr, int len) {
-	int DataIdx;
-
-	for (DataIdx = 0; DataIdx < len; DataIdx++) {
-		*ptr++ = __io_getchar();
-	}
-
-	return len;
-}
-
-__attribute__((weak)) int _write(int file, char *ptr, int len) {
-	int DataIdx;
-
-	for (DataIdx = 0; DataIdx < len; DataIdx++) {
-		__io_putchar(*ptr++);
-	}
-	return len;
-}
-
-int _close(int file) {
-	return -1;
-}
-
-int _fstat(int file, struct stat *st) {
-	st->st_mode = S_IFCHR;
-	return 0;
-}
-
-int _isatty(int file) {
-	return 1;
-}
-
-int _lseek(int file, int ptr, int dir) {
-	return 0;
-}
-
-int _open(char *path, int flags, ...) {
-	/* Pretend like we always fail */
-	return -1;
-}
-
-int _wait(int *status) {
-	errno = ECHILD;
-	return -1;
-}
-
-int _unlink(char *name) {
-	errno = ENOENT;
-	return -1;
-}
-
-int _times(struct tms *buf) {
-	return -1;
-}
-
-int _stat(char *file, struct stat *st) {
-	st->st_mode = S_IFCHR;
-	return 0;
-}
-
-int _link(char *old, char *new) {
-	errno = EMLINK;
-	return -1;
-}
-
-int _fork(void) {
-	errno = EAGAIN;
-	return -1;
-}
-
-int _execve(char *name, char **argv, char **env) {
-	errno = ENOMEM;
-	return -1;
-}