[Bug java/16899] New: Gcj does not produce working executables for big endian ARMs

["jari dot korva at iki dot fi" <gcc-bugzilla at gcc dot gnu dot org>]

HelloWorld application compiled with gcj segfaults on armv5b-softfloat-linux
architecture (i.e. XScale IXP 422).

gdb output:

Program received signal SIGSEGV, Segmentation fault.
0x0001de4c in _Jv_FindClass (name=0x2a6820, loader=0x0)
    at
/wrk/arm-linux/crosstool-0.28-rc31/build/armv5b-softfloat-linux/gcc-3.4.0-glibc-2.3.2/gcc-3.4.0/libjava/java/lang/natClassLoader.cc:507
507               klass = sys->loadClass (sname, false); 

strace output:

open("/lib/ld-linux.so.2", O_RDONLY)    = 3
read(3, "\177ELF\1\2\1a\0\0\0\0\0\0\0\0\0\3\0(\0\0\0\1\0\0\35\0"..., 1024) = 1024
fstat64(3, {st_mode=S_IFREG|0755, st_size=93428, ...}) = 0
brk(0x2d9000)                           = 0x2d9000
brk(0x2da000)                           = 0x2da000
old_mmap(NULL, 124772, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) = 0x4012f000
mprotect(0x40145000, 34660, PROT_NONE)  = 0
old_mmap(0x40147000, 24576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3,
0x10000) = 0x40147000
old_mmap(0x4014d000, 1892, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x4014d000
close(3)                                = 0
mprotect(0x4012f000, 90112, PROT_READ|PROT_WRITE) = 0
mprotect(0x4012f000, 90112, PROT_READ|PROT_EXEC) = 0
mprotect(0x40011000, 1101824, PROT_READ|PROT_WRITE) = 0
mprotect(0x40011000, 1101824, PROT_READ|PROT_EXEC) = 0
mprotect(0x40000000, 36864, PROT_READ|PROT_WRITE) = 0
mprotect(0x40000000, 36864, PROT_READ|PROT_EXEC) = 0
brk(0)                                  = 0x2da000
brk(0x2da180)                           = 0x2da180
brk(0)                                  = 0x2da180
brk(0x2db000)                           = 0x2db000
open("/etc/passwd", O_RDONLY)           = 3
fcntl64(3, F_GETFD)                     = 0
fcntl64(3, F_SETFD, FD_CLOEXEC)         = 0
fstat64(3, {st_mode=S_IFREG|0644, st_size=972, ...}) = 0
old_mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x4014e000
read(3, "root:x:0:0:root:/root:/bin/bash\n"..., 4096) = 972
close(3)                                = 0
munmap(0x4014e000, 4096)                = 0
getcwd("/wrk/java-test", 250) = 26
open("/lib/", O_RDONLY)                 = 3
read(3, 0xbffff150, 1024)               = -1 EISDIR (Is a directory)
close(3)                                = 0
fstat64(1, {st_mode=S_IFCHR|0620, st_rdev=makedev(3, 0), ...}) = 0
open("/usr/lib/gconv/gconv-modules.cache", O_RDONLY) = -1 ENOENT (No such file
or directory)
open("/usr/lib/gconv/gconv-modules", O_RDONLY) = -1 ENOENT (No such file or
directory)
brk(0)                                  = 0x2db000
brk(0x2e3000)                           = 0x2e3000
brk(0)                                  = 0x2e3000
brk(0x2e4000)                           = 0x2e4000
brk(0)                                  = 0x2e4000
brk(0)                                  = 0x2e4000
brk(0x2f4000)                           = 0x2f4000
--- SIGSEGV (Segmentation fault) @ 0 (0) ---
+++ killed by SIGSEGV +++

The application was compiled with:

% armv5b-softfloat-linux-gcj -v
Reading specs from /cross/lib/gcc/armv5b-softfloat-linux/3.4.0/specs
Reading specs from
/cross/lib/gcc/armv5b-softfloat-linux/3.4.0/../../../../armv5b-softfloat-linux/lib/libgcj.spec
rename spec lib to liborig
Configured with:
/wrk/arm-linux/crosstool-0.28-rc31/build/armv5b-softfloat-linux/gcc-3.4.0-glibc-2.3.2/gcc-3.4.0/configure
--target=armv5b-softfloat-linux --host=i686-host_pc-linux-gnu
--prefix=/tmp/cross --with-float=soft --with-cpu=xscale
--enable-cxx-flags=-mcpu=xscale
--with-headers=/tmp/cross/armv5b-softfloat-linux/include
--with-local-prefix=/tmp/cross/armv5b-softfloat-linux --disable-nls
--enable-threads=posix --enable-symvers=gnu --enable-__cxa_atexit
--enable-languages=c,c++,java --enable-shared --enable-c99 --enable-long-long
Thread model: posix
gcc version 3.4.0

... and executed on a:

# uname -a
Linux 2.4.18_mvl30-ixdp425 #605 Thu Apr 15 17:36:30 CST 2004 armv5teb unknown

-- 
           Summary: Gcj does not produce working executables for big endian
                    ARMs
           Product: gcc
           Version: 3.4.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: java
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: jari dot korva at iki dot fi
                CC: gcc-bugs at gcc dot gnu dot org,java-prs at gcc dot gnu
                    dot org
 GCC build triplet: i686-linux
  GCC host triplet: armv5b-softfloat-linux


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16899