[Bug other/46125] New: -mcmodel=large doesn't work

[Bug other/46125] New: -mcmodel=large doesn't work

[liwei79 at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46125

           Summary: -mcmodel=large doesn't work
           Product: gcc
           Version: 4.5.1
            Status: UNCONFIRMED
          Severity: critical
          Priority: P3
         Component: other
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: liwei79@gmail.com


Hi,

I am working on huge object files and I am glad to see that gcc
supports -mcmodel=large now. However, my experiment even doesn't work
because of relocation problem in crtbeginS.o

My Source file: t.c
#include <stdio.h>
extern int foo(int argc, char **argv);
void *pv1[1024]={(void*)foo,};
char aaaaa[2147483658] = {1, 2 };
char bbbbb[2147483658] = {2, 3 };
void *pv2[1024]={(void*)foo,};

int foo(int argc, char **argv)
{
    printf("%d", aaaaa[2147483657]);
    printf("%d", bbbbb[2147483657]);
    return 0;
}

Command line:
gcc -mcmodel=large -fPIC -shared t.c -o t.so

Error:
/gcc4.5.1/lib/gcc/x86_64-unknown-linux-gnu/4.5.1/crtbeginS.o: In
function `__do_global_dtors_aux':
crtstuff.c:(.text+0x3): relocation truncated to fit: R_X86_64_PC32
against `.bss'
crtstuff.c:(.text+0x37): relocation truncated to fit: R_X86_64_PC32
against `.bss'
crtstuff.c:(.text+0x57): relocation truncated to fit: R_X86_64_PC32
against `.bss'
crtstuff.c:(.text+0x62): relocation truncated to fit: R_X86_64_PC32
against `.bss'
crtstuff.c:(.text+0x6d): relocation truncated to fit: R_X86_64_PC32
against `.bss'

Could someone help me figure out the problem? I am using RH5 64bit. My gcc is
compiled with all default configuration. 

Thanks,
Wei

[Bug other/46125] -mcmodel=large doesn't work

[pinskia at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46125

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|ABI                         |
           Severity|critical                    |normal

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> 2010-10-27 20:37:54 UTC ---
As mentioned in the thread to the list you need to compile crtstuff.c with
-mcmodel=large also.

[Bug other/46125] -mcmodel=large doesn't work

[liwei79 at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46125

Wei Li <liwei79 at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |FIXED

--- Comment #2 from Wei Li <liwei79 at gmail dot com> 2010-10-28 06:22:59 UTC ---
Thanks a lot.

I recompiled crtstuff.c with -mcmodel=large and the issue is solved.

[Bug other/46125] -mcmodel=large doesn't work

[adrian.m.smith at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46125

Adrian Smith <adrian.m.smith at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |adrian.m.smith at gmail dot
                   |                            |com

--- Comment #3 from Adrian Smith <adrian.m.smith at gmail dot com> 2012-06-21 15:27:49 UTC ---
"As mentioned in the thread to the list you need to compile crtstuff.c with
-mcmodel=large also."

Can someone add a link to the thread? I have googled for it but this bug report
keeps on coming up. I am not too familiar with gcc development so don't know
which list is being talked about.

I too have a program which requires > 2GB of compiled code on x86-64 and get
the errors from "crtstuff.c". But where is it, how do I recompile it?