patches/gcc/4.4.5/210-arm-unbreak-armv4t.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)
yann@2149
     1
diff -durN gcc-4.4.5.orig/gcc/config/arm/linux-eabi.h gcc-4.4.5/gcc/config/arm/linux-eabi.h
yann@2149
     2
--- gcc-4.4.5.orig/gcc/config/arm/linux-eabi.h	2007-11-08 14:44:09.000000000 +0100
yann@2149
     3
+++ gcc-4.4.5/gcc/config/arm/linux-eabi.h	2010-10-09 23:01:59.000000000 +0200
yann@2149
     4
@@ -44,7 +44,7 @@
yann@2149
     5
    The ARM10TDMI core is the default for armv5t, so set
yann@2149
     6
    SUBTARGET_CPU_DEFAULT to achieve this.  */
yann@2149
     7
 #undef  SUBTARGET_CPU_DEFAULT
yann@2149
     8
-#define SUBTARGET_CPU_DEFAULT TARGET_CPU_arm10tdmi
yann@2149
     9
+#define SUBTARGET_CPU_DEFAULT TARGET_CPU_arm9tdmi
yann@2149
    10
 
yann@2149
    11
 /* TARGET_BIG_ENDIAN_DEFAULT is set in
yann@2149
    12
    config.gcc for big endian configurations.  */