[Bug ports/12097] New: glibc is unbuildable on an EABI ARMv4 system.

[Bug ports/12097] New: glibc is unbuildable on an EABI ARMv4 system.

[filip.zyzniewski at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=12097

           Summary: glibc is unbuildable on an EABI ARMv4 system.
           Product: glibc
           Version: 2.12
            Status: UNCONFIRMED
          Severity: critical
          Priority: P2
         Component: ports
        AssignedTo: roland@gnu.org
        ReportedBy: filip.zyzniewski@gmail.com


I am one of the developers of jlime (http://www.jlime.org). I was
trying to build an userland for the HP Jornada 720 (SA-1110 based
machine) today and I have noticed that it won't build. It fails when
building eglibc with the following error message:

=========================================================
arm-oe-linux-gnueabi-gcc -march=armv4 -mtune=strongarm
-mthumb-interwork -mno-thumb
../ports/sysdeps/unix/sysv/linux/arm/eabi/libc-do-syscall.S -c
-I../include
-I/home/users/filip.zyzniewski/build/tmp/work/armv4-oe-linux-gnueabi/eglibc-initial-2.12-r14.5+svnr11306/build-arm-oe-linux-gnueabi/csu
@/home/users/filip.zyzniewski/build/tmp/work/armv4-oe-linux-gnueabi/eglibc-initial-2.12-r14.5+svnr11306/build-arm-oe-linux-gnueabi/includes
-I.. -I../libio -I. -D_LIBC_REENTRANT -include
../include/libc-symbols.h       -DHAVE_INITFINI -DASSEMBLER
-I/home/users/filip.zyzniewski/build/tmp/work/armv4-oe-linux-gnueabi/eglibc-initial-2.12-r14.5+svnr11306/build-arm-oe-linux-gnueabi/csu/.
 -Wa,--noexecstack   -o
/home/users/filip.zyzniewski/build/tmp/work/armv4-oe-linux-gnueabi/eglibc-initial-2.12-r14.5+svnr11306/build-arm-oe-linux-gnueabi/csu/libc-do-syscall.o
-MD -MP -MF
/home/users/filip.zyzniewski/build/tmp/work/armv4-oe-linux-gnueabi/eglibc-initial-2.12-r14.5+svnr11306/build-arm-oe-linux-gnueabi/csu/libc-do-syscall.o.dt
-MT
/home/users/filip.zyzniewski/build/tmp/work/armv4-oe-linux-gnueabi/eglibc-initial-2.12-r14.5+svnr11306/build-arm-oe-linux-gnueabi/csu/libc-do-syscall.o
../ports/sysdeps/unix/sysv/linux/arm/eabi/libc-do-syscall.S: Assembler
messages:
../ports/sysdeps/unix/sysv/linux/arm/eabi/libc-do-syscall.S:28: Error:
selected processor does not support THUMB opcodes
../ports/sysdeps/unix/sysv/linux/arm/eabi/libc-do-syscall.S:34: Error:
selected processor does not support `push {r7,lr}'
../ports/sysdeps/unix/sysv/linux/arm/eabi/libc-do-syscall.S:39: Error:
selected processor does not support `mov r7,ip'
../ports/sysdeps/unix/sysv/linux/arm/eabi/libc-do-syscall.S:40: Error:
selected processor does not support `swi 0x0'
../ports/sysdeps/unix/sysv/linux/arm/eabi/libc-do-syscall.S:41: Error:
selected processor does not support `pop {r7,pc}'
make[2]: ***
[/home/users/filip.zyzniewski/build/tmp/work/armv4-oe-linux-gnueabi/eglibc-initial-2.12-r14.5+svnr11306/build-arm-oe-linux-gnueabi/csu/libc-do-syscall.o]
Error 1
=========================================================

gcc-4.4.2 and binutils-2.18 (or 2.20, I'm not sure) are capable of
creating working EABI executables for ARMv4 processors. THUMB mode
instructions in the file above cause (e)glibc to be unbuildable in
this configuration.
I've tracked this file down
http://repo.or.cz/w/glibc-ports.git/commitdiff/2dcd7ed8fd149a5aefc8c7a7ff041ff389348b4f
and here I am :).

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[Bug ports/12097] glibc is unbuildable on an EABI ARMv4 system.

[filip.zyzniewski at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=12097

Filip Zyzniewski <filip.zyzniewski at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Target|                            |armv4-oe-linux-gnueabi
               Host|                            |armv4-oe-linux-gnueabi
              Build|                            |x86_64-linux

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[Bug ports/12097] glibc is unbuildable on an EABI ARMv4 system.

[joseph at codesourcery dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=12097

--- Comment #1 from joseph at codesourcery dot com <joseph at codesourcery dot com> 2010-10-05 20:04:19 UTC ---
I think it should be OK to condition the entire contents of 
libc-do-syscall.S on #ifdef __thumb__; this hidden function is only used 
when building glibc as Thumb.

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[Bug ports/12097] glibc is unbuildable on an EABI ARMv4 system.

[raj.khem at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=12097

--- Comment #2 from Khem Raj <raj.khem at gmail dot com> 2010-10-05 20:24:01 UTC ---
Created attachment 5038
  --> http://sourceware.org/bugzilla/attachment.cgi?id=5038
fix

please try this untested patch.

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[Bug ports/12097] glibc is unbuildable on an EABI ARMv4 system.

[raj.khem at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=12097

Khem Raj <raj.khem at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |raj.khem at gmail dot com

--- Comment #3 from Khem Raj <raj.khem at gmail dot com> 2010-10-05 20:29:21 UTC ---
(In reply to comment #1)
> I think it should be OK to condition the entire contents of 
> libc-do-syscall.S on #ifdef __thumb__; this hidden function is only used 
> when building glibc as Thumb.

heh exactly. you comments beat my patch :)

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[Bug ports/12097] glibc is unbuildable on an EABI ARMv4 system.

[bryanhundven at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=12097

Bryan Hundven <bryanhundven at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |bryanhundven at gmail dot
                   |                            |com

--- Comment #4 from Bryan Hundven <bryanhundven at gmail dot com> 2010-11-03 22:03:27 UTC ---
I get the same problem with:
armeb-unknown-linux-gnueabi -march=armv5 -mtune=xscale -mno-thumb

And applying the above patch works for me.

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[Bug ports/12097] glibc is unbuildable on an EABI ARMv4 system.

[bryanhundven at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=12097

--- Comment #5 from Bryan Hundven <bryanhundven at gmail dot com> 2010-11-03 22:34:35 UTC ---
Ignore my previous note.

-march=armv5 -mtune=xscale

produces bad binaries for xscale.

./hello
Illegal instruction

building with -mcpu=xscale (no -march or -mtune) does not need this patch.

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[Bug ports/12097] glibc is unbuildable on an EABI ARMv4 system.

[bryanhundven at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=12097

Bryan Hundven <bryanhundven at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|bryanhundven at gmail dot   |
                   |com                         |

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[Bug ports/12097] glibc is unbuildable on an EABI ARMv4 system.

[dbaryshkov at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=12097

Dmitry Eremin-Solenikov <dbaryshkov at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |bryanhundven at gmail dot
                   |                            |com, dbaryshkov at gmail
                   |                            |dot com

--- Comment #6 from Dmitry Eremin-Solenikov <dbaryshkov at gmail dot com> 2011-08-03 12:08:16 UTC ---
Any progress on this bug?

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[Bug ports/12097] glibc is unbuildable on an EABI ARMv4 system.

[jsm28 at gcc dot gnu.org]

http://sourceware.org/bugzilla/show_bug.cgi?id=12097

Joseph Myers <jsm28 at gcc dot gnu.org> changed:

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

--- Comment #7 from Joseph Myers <jsm28 at gcc dot gnu.org> 2012-02-15 22:10:33 UTC ---
Thanks, I've committed this patch.

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[Bug ports/12097] glibc is unbuildable on an EABI ARMv4 system.

[fweimer at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=12097

Florian Weimer <fweimer at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
              Flags|                            |security-

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