do not provide /usr/lib/locale

[platform/upstream/glibc.git] / include / alloca.h

diff --git a/include/alloca.h b/include/alloca.h
index 4dcddb6..f741d25 100644 (file)
--- a/include/alloca.h
+++ b/include/alloca.h
@@ -1,14 +1,76 @@
 #ifndef _ALLOCA_H
 
 #include <stdlib/alloca.h>
+#include <stackinfo.h>
 
 #undef __alloca
 
 /* Now define the internal interfaces.  */
-extern __ptr_t __alloca __P ((size_t __size));
+extern void *__alloca (size_t __size);
 
 #ifdef __GNUC__
 # define __alloca(size)        __builtin_alloca (size)
 #endif /* GCC.  */
 
+extern int __libc_use_alloca (size_t size) __attribute__ ((const));
+extern int __libc_alloca_cutoff (size_t size) __attribute__ ((const));
+libc_hidden_proto (__libc_alloca_cutoff)
+
+#define __MAX_ALLOCA_CUTOFF    65536
+
+#include <allocalim.h>
+
+#ifndef stackinfo_alloca_round
+# define stackinfo_alloca_round(l) (((l) + 15) & -16)
+#endif
+
+#if _STACK_GROWS_DOWN
+# define extend_alloca(buf, len, newlen) \
+  (__typeof (buf)) ({ size_t __newlen = stackinfo_alloca_round (newlen);      \
+                     char *__newbuf = __alloca (__newlen);                   \
+                     if (__newbuf + __newlen == (char *) buf)                \
+                       len += __newlen;                                      \
+                     else                                                    \
+                       len = __newlen;                                       \
+                     __newbuf; })
+#elif _STACK_GROWS_UP
+# define extend_alloca(buf, len, newlen) \
+  (__typeof (buf)) ({ size_t __newlen = stackinfo_alloca_round (newlen);      \
+                     char *__newbuf = __alloca (__newlen);                   \
+                     char *__buf = (buf);                                    \
+                     if (__buf + len == __newbuf)                            \
+                       {                                                     \
+                         len += __newlen;                                    \
+                         __newbuf = __buf;                                   \
+                       }                                                     \
+                     else                                                    \
+                       len = __newlen;                                       \
+                     __newbuf; })
+#else
+# define extend_alloca(buf, len, newlen) \
+  __alloca (((len) = (newlen)))
+#endif
+
+#if defined stackinfo_get_sp && defined stackinfo_sub_sp
+# define alloca_account(size, avar) \
+  ({ void *old__ = stackinfo_get_sp ();                                              \
+     void *m__ = __alloca (size);                                            \
+     avar += stackinfo_sub_sp (old__);                                       \
+     m__; })
+# define extend_alloca_account(buf, len, newlen, avar) \
+  ({ void *old__ = stackinfo_get_sp ();                                              \
+     void *m__ = extend_alloca (buf, len, newlen);                           \
+     avar += stackinfo_sub_sp (old__);                                       \
+     m__; })
+#else
+# define alloca_account(size, avar) \
+  ({ size_t s__ = (size);                                                    \
+     avar += s__;                                                            \
+     __alloca (s__); })
+# define extend_alloca_account(buf, len, newlen, avar) \
+  ({ size_t s__ = (newlen);                                                  \
+     avar += s__;                                                            \
+     extend_alloca (buf, len, s__); })
+#endif
+
 #endif