Re: bootstrap/3922: [sparc-elf] embedded target makes UNIX calls

Re: bootstrap/3922: [sparc-elf] embedded target makes UNIX calls

[bangerth]

Synopsis: [sparc-elf] embedded target makes UNIX calls

State-Changed-From-To: feedback->analyzed
State-Changed-By: bangerth
State-Changed-When: Wed Apr 30 21:43:32 2003
State-Changed-Why:
    Shouldn't be in feedback state

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=3922

Re: bootstrap/3922: sparc-elf embedded target makes UNIX calls

[joel]

Synopsis: sparc-elf embedded target makes UNIX calls

State-Changed-From-To: analyzed->feedback
State-Changed-By: joel
State-Changed-When: Fri Jan 31 21:15:51 2003
State-Changed-Why:
    Still broken on 3.2.2 20030130 (prerelease)

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=3922

Re: bootstrap/3922: sparc-elf embedded target makes UNIX calls

[Joel Sherrill]

The following reply was made to PR bootstrap/3922; it has been noted by GNATS.

From: Joel Sherrill <joel.sherrill@OARcorp.com>
To: davem@gcc.gnu.org, gcc-bugs@gcc.gnu.org, gcc-prs@gcc.gnu.org,
 	gcc-gnats@gcc.gnu.org
Cc:  
Subject: Re: bootstrap/3922: sparc-elf embedded target makes UNIX calls
Date: Tue, 25 Jun 2002 14:52:38 -0500

 davem@gcc.gnu.org wrote:
 > 
 > Synopsis: sparc-elf embedded target makes UNIX calls
 > 
 > State-Changed-From-To: open->analyzed
 > State-Changed-By: davem
 > State-Changed-When: Tue Jun 25 12:47:03 2002
 > State-Changed-Why:
 >     It gets it from the trampoline stack execute protection
 >     code, ie. the macro sol2.h:TRANSFER_FROM_TRAMPOLINE
 > 
 >     I've always been mystified why the embedded targets
 >     use the Solaris headers.  They either have to start
 >     using their own embedded headers or somehow
 >     conditionalize TRANSFER_FROM_TRAMPOLINE with a suitable
 >     ifdef that will match on the embedded Sparc targets.
 > 
 > http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=3922
 
 FWIW newlib prototypes the missing routines and
 RTEMS includes stubs for all the UNIX routines that
 are sufficient to make the linkage happy.  If anyone 
 cares, I can provide them and maybe they can go in
 newlib.  But someone more knowledgeable about 
 sparc-elf (not sparc-rtems) would have to speak.
 
 -- 
 Joel Sherrill, Ph.D.             Director of Research & Development
 joel@OARcorp.com                 On-Line Applications Research
 Ask me about RTEMS: a free RTOS  Huntsville AL 35805
    Support Available             (256) 722-9985

Re: bootstrap/3922: sparc-elf embedded target makes UNIX calls

[davem]

Synopsis: sparc-elf embedded target makes UNIX calls

State-Changed-From-To: open->analyzed
State-Changed-By: davem
State-Changed-When: Tue Jun 25 12:47:03 2002
State-Changed-Why:
    It gets it from the trampoline stack execute protection
    code, ie. the macro sol2.h:TRANSFER_FROM_TRAMPOLINE
    
    I've always been mystified why the embedded targets
    use the Solaris headers.  They either have to start
    using their own embedded headers or somehow
    conditionalize TRANSFER_FROM_TRAMPOLINE with a suitable
    ifdef that will match on the embedded Sparc targets.

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=3922

bootstrap/3922: sparc-elf embedded target makes UNIX calls

[joel]

>Number:         3922
>Category:       bootstrap
>Synopsis:       sparc-elf embedded target makes UNIX calls
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Aug 03 07:26:00 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator:     joel@gcc.gnu.org
>Release:        gcc-30-cvs checked out on 20010802
>Organization:
>Environment:
GNU/Linux RedHat 6.2
>Description:
Embedded targets should not have to provide sysconf(),
getpagesize(), or mprotect().  This appears to be responsible
for 40 test failures.

Targetting sparc-elf some tests fail to link like this:

spawn /usr3/ftp_archive/gnu/gcc/ss/b3/b-sparc-elf/gcc/xgcc -B/usr3/ftp_archive/gnu/gcc/ss/b3/b-sparc-elf/gcc/ /usr3/ftp_archive/gnu/gcc/ss/b3/gcc-30-cvs/gcc/testsuite/gcc.c-torture/execute/20000822-1.c testglue.o -w -O0 -I/usr3/ftp_archive/gnu/gcc/ss/b3/b-sparc-elf/sparc-elf//newlib/targ-include -I/usr3/ftp_archive/gnu/gcc/ss/b3/gcc-30-cvs/newlib/libc/include -nostdlib -nostartfiles -B/usr3/ftp_archive/gnu/gcc/ss/b3/b-sparc-elf/sparc-elf//libgloss/sparc/ -L/usr3/ftp_archive/gnu/gcc/ss/b3/b-sparc-elf/sparc-elf//libgloss/sparc -L/usr3/ftp_archive/gnu/gcc/ss/b3/gcc-30-cvs/libgloss/sparc -B/usr3/ftp_archive/gnu/gcc/ss/b3/b-sparc-elf/sparc-elf//newlib/ -L/usr3/ftp_archive/gnu/gcc/ss/b3/b-sparc-elf/sparc-elf//newlib -Wl,-wrap,exit -Wl,-wrap,main -Wl,-wrap,abort -lm -Telfsim.ld -o /usr3/ftp_archive/gnu/gcc/ss/b3/b-sparc-elf/gcc/testsuite/20000822-1.x0 ^M
/usr3/ftp_archive/gnu/gcc/ss/b3/b-sparc-elf/gcc/libgcc.a(_trampoline.o): In function `check_enabling':^M
/usr3/ftp_archive/gnu/gcc/ss/b3/b-sparc-elf/gcc/../../gcc-30-cvs/gcc/libgcc2.c(.text+0x4): undefined reference to `sysconf'^M
/usr3/ftp_archive/gnu/gcc/ss/b3/b-sparc-elf/gcc/libgcc.a(_trampoline.o): In function `__enable_execute_stack':^M
/usr3/ftp_archive/gnu/gcc/ss/b3/b-sparc-elf/gcc/../../gcc-30-cvs/gcc/libgcc2.c(.text+0x40): undefined reference to `getpagesize'^M
/usr3/ftp_archive/gnu/gcc/ss/b3/b-sparc-elf/gcc/../../gcc-30-cvs/gcc/libgcc2.c(.text+0x64): undefined reference to `mprotect'^M
collect2: ld returned 1 exit status^M
compiler exited with status 1
>How-To-Repeat:
try to compile at least the test indicated above.
>Fix:
I don't know how the embedded sparc-elf ends up using the 
trampoline code in sol2.h which is where these references
appear to come from.
>Release-Note:
>Audit-Trail:
>Unformatted: