Added userspace libc and began userspace based shell

1 files changed, 30 insertions, 0 deletions

diff --git a/src/kernel/lib/stdlib/htoa.c b/src/kernel/lib/stdlib/htoa.c
new file mode 100644
index 0000000..85bd750
--- /dev/null
+++ b/src/kernel/lib/stdlib/htoa.c
@@ -0,0 +1,30 @@
+#include <stdint.h>
+#include <kernel/lib/string.h>
+#include <kernel/lib/stdlib.h>
+
+static const char __HTOA_TABLE[] = "0123456789ABCDEF";
+
+char *htoa(uint32_t n)
+{
+    char *ret = kmalloc(10);
+
+    int i = 0;
+    while (n) {
+        ret[i++] = __HTOA_TABLE[n & 0xF];
+        n >>= 4;
+    }
+
+    if (!i) {
+        ret[0] = '0';
+        i++;
+    }
+
+    for (; i <= 9; i++) ret[i] = 0;
+
+    char *aux = strdup(ret);
+    kfree(ret);
+    ret = aux;
+
+    strinv(ret);
+    return ret;
+}
\ No newline at end of file