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patches/glibc/ports-2.12.1/460-alpha-fix-gcc-4.1-warnings.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) 
     1 2006-05-30  Falk Hueffner <falk@debian.org>

     2 

     3 	* sysdeps/unix/sysv/linux/alpha/ioperm.c: force the architecture

     4 	  to ev6 in assembly code.

     5 

     6 {standard input}: Assembler messages:

     7 {standard input}:341: Error: macro requires $at register while noat in effect

     8 {standard input}:374: Error: macro requires $at register while noat in effect

     9 {standard input}:438: Error: macro requires $at register while noat in effect

    10 {standard input}:471: Error: macro requires $at register while noat in effect

    11 make[3]: *** [/tmp/buildd/glibc-2.3.6/build-tree/alpha-libc/misc/ioperm.o] Error 1

    12 

    13 Hrm. gcc puts .arch ev4 into the .s, and this overrides -mev6 for as.

    14 I cannot really think of anything better than

    15 

    16  ports/sysdeps/unix/sysv/linux/alpha/ioperm.c |    8 ++++----

    17  1 file changed, 4 insertions(+), 4 deletions(-)

    18 

    19 diff -durN glibc-2.12.1.orig/glibc-ports-2.12.1/sysdeps/unix/sysv/linux/alpha/ioperm.c glibc-2.12.1/glibc-ports-2.12.1/sysdeps/unix/sysv/linux/alpha/ioperm.c

    20 --- glibc-2.12.1.orig/glibc-ports-2.12.1/sysdeps/unix/sysv/linux/alpha/ioperm.c	2009-05-16 10:36:20.000000000 +0200

    21 +++ glibc-2.12.1/glibc-ports-2.12.1/sysdeps/unix/sysv/linux/alpha/ioperm.c	2009-11-13 00:50:57.000000000 +0100

    22 @@ -178,13 +178,13 @@

    23  static inline void

    24  stb_mb(unsigned char val, unsigned long addr)

    25  {

    26 -  __asm__("stb %1,%0; mb" : "=m"(*(vucp)addr) : "r"(val));

    27 +  __asm__(".arch ev6; stb %1,%0; mb" : "=m"(*(vucp)addr) : "r"(val));

    28  }

    29  

    30  static inline void

    31  stw_mb(unsigned short val, unsigned long addr)

    32  {

    33 -  __asm__("stw %1,%0; mb" : "=m"(*(vusp)addr) : "r"(val));

    34 +  __asm__(".arch ev6; stw %1,%0; mb" : "=m"(*(vusp)addr) : "r"(val));

    35  }

    36  

    37  static inline void

    38 @@ -356,7 +356,7 @@

    39    unsigned long int addr = dense_port_to_cpu_addr (port);

    40    unsigned char r;

    41  

    42 -  __asm__ ("ldbu %0,%1" : "=r"(r) : "m"(*(vucp)addr));

    43 +  __asm__ (".arch ev6; ldbu %0,%1" : "=r"(r) : "m"(*(vucp)addr));

    44    return r;

    45  }

    46  

    47 @@ -366,7 +366,7 @@

    48    unsigned long int addr = dense_port_to_cpu_addr (port);

    49    unsigned short r;

    50  

    51 -  __asm__ ("ldwu %0,%1" : "=r"(r) : "m"(*(vusp)addr));

    52 +  __asm__ (".arch ev6; ldwu %0,%1" : "=r"(r) : "m"(*(vusp)addr));

    53    return r;

    54  }

    55  

    56 diff -durN glibc-2.12.1.orig/ports/sysdeps/unix/sysv/linux/alpha/ioperm.c glibc-2.12.1/ports/sysdeps/unix/sysv/linux/alpha/ioperm.c
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