1 files changed, 48 insertions, 7 deletions

diff --git a/user/program.c b/user/program.c
index 8e26128..65621f5 100644
--- a/user/program.c
+++ b/user/program.c
@@ -1,22 +1,63 @@
-static long sys_write(const char* buffer, unsigned long buffer_size)
+static long sys_write(const char* buffer, unsigned long buffer_length)
 {
     long ret;
-    __asm__ volatile("int $0x80" : "=a"(ret) : "a"(1L), "D"(buffer), "S"(buffer_size) : "memory");
+    __asm__ volatile("int $0x80" : "=a"(ret) : "a"(1L), "D"(buffer), "S"(buffer_length) : "memory");
     return ret;
 }
+
+static long sys_read(void)
+{
+    long ret;
+    __asm__ volatile("int $0x80" : "=a"(ret) : "a"(2L) : "memory");
+    return ret;
+}
+
 static void sys_exit(long code)
 {
     __asm__ volatile("int $0x80" : : "a"(0L), "D"(code) : "memory");
     for (;;);
 }
 
+static void put(const char* string)
+{
+    unsigned long n = 0;
+    while (string[n])
+        n++;
+    sys_write(string, n);
+}
+
 void _start(void)
 {
-    const char* message = "wassup shawty\n";
-    unsigned long message_length = 0;
-    while (message[message_length])
-        message_length++;
+    put("what's your name? ");
+    char name[64];
+    int name_length = 0;
+
+    for (;;)
+    {
+        char character = (char)sys_read();
+        if (character == '\n')
+            break;
+
+        if (character == '\b')
+        {
+            if (name_length > 0)
+            {
+                name_length--;
+                sys_write("\b \b", 3);
+            }
+
+            continue;
+        }
+
+        if (name_length < 63)
+        {
+            name[name_length++] = character;
+            sys_write(&character, 1);
+        }
+    }
 
-    sys_write(message, message_length);
+    put("\noue va te faire foutre ");
+    sys_write(name, name_length);
+    put("\n");
     sys_exit(0);
 }