wirish/syscalls.c: Weaken I/O related function defs.

For overriding.

Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>

1 files changed, 12 insertions, 12 deletions

diff --git a/wirish/syscalls.c b/wirish/syscalls.c
index d365e15..4c5ce8a 100644
--- a/wirish/syscalls.c
+++ b/wirish/syscalls.c
@@ -74,46 +74,46 @@ caddr_t _sbrk(int incr) {
     return ret;
 }
 
-int _open(const char *path, int flags, ...) {
+__weak int _open(const char *path, int flags, ...) {
     return 1;
 }
 
-int _close(int fd) {
+__weak int _close(int fd) {
     return 0;
 }
 
-int _fstat(int fd, struct stat *st) {
+__weak int _fstat(int fd, struct stat *st) {
     st->st_mode = S_IFCHR;
     return 0;
 }
 
-int _isatty(int fd) {
+__weak int _isatty(int fd) {
     return 1;
 }
 
-int isatty(int fd) {
+__weak int isatty(int fd) {
     return 1;
 }
 
-int _lseek(int fd, off_t pos, int whence) {
+__weak int _lseek(int fd, off_t pos, int whence) {
     return -1;
 }
 
-unsigned char getch(void) {
+__weak unsigned char getch(void) {
     return 0;
 }
 
 
-int _read(int fd, char *buf, size_t cnt) {
+__weak int _read(int fd, char *buf, size_t cnt) {
     *buf = getch();
 
     return 1;
 }
 
-void putch(unsigned char c) {
+__weak void putch(unsigned char c) {
 }
 
-void cgets(char *s, int bufsize) {
+__weak void cgets(char *s, int bufsize) {
     char *p;
     int c;
     int i;
@@ -153,7 +153,7 @@ void cgets(char *s, int bufsize) {
     return;
 }
 
-int _write(int fd, const char *buf, size_t cnt) {
+__weak int _write(int fd, const char *buf, size_t cnt) {
     int i;
 
     for (i = 0; i < cnt; i++)
@@ -163,7 +163,7 @@ int _write(int fd, const char *buf, size_t cnt) {
 }
 
 /* Override fgets() in newlib with a version that does line editing */
-char *fgets(char *s, int bufsize, void *f) {
+__weak char *fgets(char *s, int bufsize, void *f) {
     cgets(s, bufsize);
     return s;
 }