patches/glibc/2.6/150-alpha-asm_page.patch
author "Yann E. MORIN" <yann.morin.1998@free.fr>
Sat Jan 04 01:02:57 2014 +0100 (2014-01-04)
changeset 3271 c65dc9b98841
parent 565 ef7dd7893e54
permissions -rw-r--r--
cc/gcc: diable libsanitizer without NPTL

gcc-4.8 comes with a new library to sanitise memory access:
- heap-, stack-, and global-buffer overflow, use-after-free
- data-races between threads

This library requires some _np parts of the API, which are not
implemented in the (old) LinuxThreads, which is still available
in uClibc.

Since NPTL requires a i486 or above, i386 are stuck with using LT,
which precludes building the libsanitizer.

Disable libsanitizer, a bit like libatomic is.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Niels Penneman <niels@penneman.org>
yann@565
     1
2008-06-07  Mike Frysinger  <vapier@gentoo.org>
yann@565
     2
yann@565
     3
	* sysdeps/unix/sysv/linux/alpha/sys/user.h: Copy page.h definitions
yann@565
     4
	from the kernel header to sys/user.h and remove the #include of
yann@565
     5
	sys/user.h.
yann@565
     6
yann@565
     7
--- a/sysdeps/unix/sysv/linux/alpha/sys/user.h
yann@565
     8
+++ b/sysdeps/unix/sysv/linux/alpha/sys/user.h
yann@565
     9
@@ -23,7 +23,6 @@
yann@565
    10
    only. Don't read too much into it. Don't use it for anything other
yann@565
    11
    than gdb/strace unless you know what you are doing. */
yann@565
    12
 
yann@565
    13
-#include <asm/page.h>
yann@565
    14
 #include <asm/reg.h>
yann@565
    15
 
yann@565
    16
 struct user
yann@565
    17
@@ -41,6 +40,9 @@ struct user
yann@565
    18
   char u_comm[32];				/* user command name */
yann@565
    19
 };
yann@565
    20
 
yann@565
    21
+#define PAGE_SHIFT		13
yann@565
    22
+#define PAGE_SIZE		(1 << PAGE_SHIFT)
yann@565
    23
+#define PAGE_MASK		(~(PAGE_SIZE-1))
yann@565
    24
 #define NBPG			PAGE_SIZE
yann@565
    25
 #define UPAGES			1
yann@565
    26
 #define HOST_TEXT_START_ADDR	(u.start_code)