patches/gcc/4.4.2/170-sparc64-bsd.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
parent 1544 2228ea3f6b79
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)
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diff -durN gcc-4.4.0.orig/gcc/config/sparc/freebsd.h gcc-4.4.0/gcc/config/sparc/freebsd.h
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--- gcc-4.4.0.orig/gcc/config/sparc/freebsd.h	2007-08-02 12:49:31.000000000 +0200
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+++ gcc-4.4.0/gcc/config/sparc/freebsd.h	2009-05-27 21:38:16.000000000 +0200
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@@ -25,9 +25,22 @@
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 /* FreeBSD needs the platform name (sparc64) defined.
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    Emacs needs to know if the arch is 64 or 32-bits.  */
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-#undef  CPP_CPU64_DEFAULT_SPEC
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-#define CPP_CPU64_DEFAULT_SPEC \
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-  "-D__sparc64__ -D__sparc_v9__ -D__sparcv9 -D__arch64__"
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+#undef  FBSD_TARGET_CPU_CPP_BUILTINS
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+#define FBSD_TARGET_CPU_CPP_BUILTINS()                  \
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+  do                                                    \
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+    {                                                   \
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+      if (TARGET_ARCH64)                                \
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+        {                                               \
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+          builtin_define ("__sparc64__");               \
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+          builtin_define ("__sparc_v9__");              \
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+          builtin_define ("__sparcv9");                 \
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+        }                                               \
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+      else                                              \
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+        builtin_define ("__sparc");                     \
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+      builtin_define ("__sparc__");                     \
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+    }                                                   \
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+  while (0)
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+
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 #define LINK_SPEC "%(link_arch)						\
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   %{!mno-relax:%{!r:-relax}}						\