new subdirs: include, lib, tests

lib/alloca86-bt.S

@@ -0,0 +1,45 @@
+/* ---------------------------------------------- */
+/* alloca86b.S */
+
+#include "config.h"
+
+.globl __bound__alloca
+
+__bound__alloca:
+    pop     %edx
+    pop     %eax
+    mov     %eax, %ecx
+    add     $3,%eax
+    and     $-4,%eax
+    jz      p6
+
+#ifdef TCC_TARGET_PE
+p4:
+    cmp     $4096,%eax
+    jle     p5
+    sub     $4096,%esp
+    sub     $4096,%eax
+    test    %eax,(%esp)
+    jmp p4
+
+p5:
+#endif
+
+    sub     %eax,%esp
+    mov     %esp,%eax
+
+    push    %edx
+    push    %eax
+    push    %ecx
+    push    %eax
+    call   __bound_new_region
+    add    $8, %esp
+    pop     %eax
+    pop     %edx
+
+p6:
+    push    %edx
+    push    %edx
+    ret
+
+/* ---------------------------------------------- */