usr: libc: Add stdio.h

* Added stdio.h and various definitions
* Added fwrite(), fputc(), putc(), putchar(), fputs(), and puts()

Signed-off-by: Quinn Stephens <quinn@osmora.org>
Signed-off-by: Ian Moffett <ian@osmora.org>

1 files changed, 8 insertions, 0 deletions

diff --git a/lib/libc/src/main.c b/lib/libc/src/main.c
index 1154b21..d16b93e 100644
--- a/lib/libc/src/main.c
+++ b/lib/libc/src/main.c
@@ -30,10 +30,18 @@
 #include <stdint.h>
 #include <stddef.h>
 
+extern int __libc_stdio_init(void);
+
 int main(int argc, char **argv);
 
 int
 __libc_entry(uint64_t *ctx)
 {
+    int status;
+
+    if ((status = __libc_stdio_init()) != 0) {
+        return status;
+    }
+
     return main(0, NULL);
 }