1 files changed, 40 insertions, 1 deletions
diff --git a/userspace/crt0.s b/userspace/crt0.s
index 8d17c13..ad9884f 120000..100644
--- a/userspace/crt0.s
+++ b/userspace/crt0.s
@@ -1 +1,40 @@
-../newlib/crt0.s
-\ No newline at end of file
+.global _start
+
+_start:
+
+# copy reent to this page
+push %ebx
+push %ecx
+
+mov _impure_ptr,%eax
+mov $0xf5000000,%ebx
+copy: 
+mov (%eax),%ecx
+mov %ecx,(%ebx)
+add $4, %ebx
+add $4, %eax
+cmp $0xf5001000,%ebx
+jne copy
+
+pop %ecx
+pop %ebx
+
+# environment adress was passed on stack
+
+movl $0xf5000000, _impure_ptr
+
+pop %eax                      
+mov %eax, environ
+
+
+# call main (argc and argv are on the stack)
+call main
+
+# push exit code and pass to _exit syscall
+push %eax
+call _exit
+
+# this should never be reached!
+.wait:
+    hlt
+jmp .wait