patches/glibc/2.11/900-march-i686.patch
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Tue Dec 13 23:32:39 2011 +0100 (2011-12-13)
branch1.13
changeset 2847 c0bf2319af08
permissions -rw-r--r--
scripts: fix dumping execution backtrace

Dumping the backtrace has been broken since changeset #652e56d6d35a:
scripts: execute each steps in a subshell

We can spawn sub-sub-shells in some cases.

The way the fault handler works is to dump the backtrace, but to avoid
printing it once for every sub-shell (which could get quite confusing),
it simply exits when it detects that it is being run in a sub-shell,
leaving to the top-level shell the work to dump the backtrace.

Because each step is executed in its own sub-shell, the variable arrays
that contain the step name, the source file and line number, are lost
when exiting the per-step sub-shell.

Hence, the backtrace is currently limited to printing only the top-level
main procedure of the shell.

Fix this thus:
- when dumping the bckatraces for the steps & the functions, remember
it was dumped, and only dump it if it was not already dumped
- at the top-level shell, print the hints

Also, rename the top-level step label.

Reported-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
(transplanted from 4193d6e6a17430a177fa88c287879c2c35e319f3)
eha@2378
     1
2007-02-15  Khem Raj  <kraj@xxxxxxxxxx>
eha@2378
     2
eha@2378
     3
       * sysdeps/unix/sysv/linux/i386/sysdep.h: Re-define __i686.
eha@2378
     4
       * nptl/sysdeps/pthread/pt-initfini.c: Ditto.
eha@2378
     5
eha@2378
     6
diff -urN glibc-2.11.orig/nptl/sysdeps/pthread/pt-initfini.c glibc-2.11/nptl/sysdeps/pthread/pt-initfini.c
eha@2378
     7
--- glibc-2.11.orig/nptl/sysdeps/pthread/pt-initfini.c	2009-12-08 21:10:20.000000000 +0100
eha@2378
     8
+++ glibc-2.11/nptl/sysdeps/pthread/pt-initfini.c	2010-12-30 11:33:31.520855595 +0100
eha@2378
     9
@@ -45,6 +45,11 @@
eha@2378
    10
 /* Embed an #include to pull in the alignment and .end directives. */
eha@2378
    11
 asm ("\n#include \"defs.h\"");
eha@2378
    12
 
eha@2378
    13
+asm ("\n#if defined __i686 && defined __ASSEMBLER__");
eha@2378
    14
+asm ("\n#undef __i686");
eha@2378
    15
+asm ("\n#define __i686 __i686");
eha@2378
    16
+asm ("\n#endif");
eha@2378
    17
+
eha@2378
    18
 /* The initial common code ends here. */
eha@2378
    19
 asm ("\n/*@HEADER_ENDS*/");
eha@2378
    20
 
eha@2378
    21
diff -urN glibc-2.11.orig/sysdeps/unix/sysv/linux/i386/sysdep.h glibc-2.11/sysdeps/unix/sysv/linux/i386/sysdep.h
eha@2378
    22
--- glibc-2.11.orig/sysdeps/unix/sysv/linux/i386/sysdep.h	2009-12-08 21:10:20.000000000 +0100
eha@2378
    23
+++ glibc-2.11/sysdeps/unix/sysv/linux/i386/sysdep.h	2010-12-30 11:33:31.520855595 +0100
eha@2378
    24
@@ -29,6 +29,10 @@
eha@2378
    25
 #include <dl-sysdep.h>
eha@2378
    26
 #include <tls.h>
eha@2378
    27
 
eha@2378
    28
+#if defined __i686 && defined __ASSEMBLER__
eha@2378
    29
+#undef __i686
eha@2378
    30
+#define __i686 __i686
eha@2378
    31
+#endif
eha@2378
    32
 
eha@2378
    33
 /* For Linux we can use the system call table in the header file
eha@2378
    34
 	/usr/include/asm/unistd.h