baremetal: stat preparing to make perfect like userland/

baremetal/getchar.c

@@ -0,0 +1,23 @@
+/* Test that input request through serial also works. */
+
+#include <stdio.h>
+#include <stdlib.h>
+
+int main(void) {
+    char c;
+    char *ptr = NULL;
+    size_t alloc_size = 1;
+    while (1) {
+        printf("enter a character\n");
+        c = getchar();
+        printf("got: %c\n", c);
+        ptr = realloc(ptr, alloc_size);
+        if (ptr == NULL) {
+            puts("out of memory");
+            break;
+        } else {
+            printf("new alloc of %d bytes at address 0x%p\n", alloc_size, ptr);
+            alloc_size <<= 1;
+        }
+    }
+}