Re: bootstrap/3589: GCC 3.0-CVS illegal instruction on hppa1.1-proelf

[Joel Sherrill <joel dot sherrill at OARcorp dot com>]

The following reply was made to PR bootstrap/3589; it has been noted by GNATS.

From: Joel Sherrill <joel.sherrill@OARcorp.com>
To: Vladimir Makarov <vmakarov@redhat.com>
Cc: gcc-gnats@gcc.gnu.org, gcc-patches@gcc.gnu.org,
 	vmakarov@gcc.gnu.org, joel@gcc.gnu.org, gcc-bugs@gcc.gnu.org
Subject: Re: bootstrap/3589: GCC 3.0-CVS illegal instruction on hppa1.1-proelf
Date: Tue, 26 Mar 2002 14:59:26 -0600

 Vladimir Makarov wrote:
 > 
 > Joel Sherrill wrote:
 > >
 > > Vladimir Makarov wrote:
 > > >
 > > > Joel Sherrill wrote:
 > > > >
 > > > > Vladimir Makarov wrote:
 > > > > >
 > > > > > Joel Sherrill wrote:
 > > > > >
 > > > > > >Is there any ifdef to check and decide which directives to use?
 > > > > > >
 > > > > > > And if there is any reference mapping between them, I would appreciate
 > > > > > > knowing about it.
 > > > > >
 > > > > > Here is the path solving the problem.
 > > > > >
 > > > > > You could find a description of the pseudoops and mapping them into elf
 > > > > > sections in
 > > > > >
 > > > > > http://segfault.net/~scut/cpu/hppa/HP_Assembler_Reference_Manual_HP9000_9th_Ed.pdf
 > > > >
 > > > > Thanks.
 > > > >
 > > > > Could the __PRO__ (or something similar) be part of the cpp predefines
 > > > > for this
 > > > > configuration so non-gcc assembly can do the right thing?  I know that
 > > > > at least
 > > > > libgloss and RTEMS have hppa assembly.
 > > > >
 > > >
 > > > Yes, we could do it.  But it is not urgent now.  Libgloss has no
 > > > .subspace directive so it should be compiled without problems.
 > >
 > > OK.  There are some in RTEMS but I am happy to disable them.  The hppa
 > > port (when really active) was maintained on on an hpux box using gcc
 > > and native as/ld.  So getting to the point where it is built using
 > 
 >   Here the rewritten patch is.  __PRO__ is now always defined for
 > hppa1.1-*-pro* and hppa1.1-*-rtems*.  Please ignore the previous patch
 > (__PRO__ was used only for libgcc compilation in it).
 
 I hate to say this but hppa1.1-*-rtems* includes config/pa/rtems.h after
 config/pa/pa-pro-end.h so ends up overriding the CPP_PREDEFINES
 settings.
 So -D__PRO__ has to be added to config/pa/rtems.h as well.
 
 It isn't obvious because the include order is from config.gcc but this
 is basically how all of the *-rtems* targets are constructed.  We
 baseline
 another similar target and slightly modify it for RTEMS. :)
 
 --joel
 
 > 2002-03-26  Vladimir Makarov  <vmakarov@redhat.com>
 > 
 >         * pa/pa-pro-end.h (CPP_PREDEFINES): Add -D__PRO__.
 > 
 >         * pa/lib2funcs.asm: Don't use .SPACE and .SUBSPACE if __PRO__ is
 >         defined.
 > 
 > Index: pa/lib2funcs.asm
 > ===================================================================
 > RCS file: /cvs/gcc/gcc/gcc/config/pa/lib2funcs.asm,v
 > retrieving revision 1.6
 > diff -c -p -r1.6 lib2funcs.asm
 > *** lib2funcs.asm       2001/04/16 18:30:45     1.6
 > --- lib2funcs.asm       2002/03/26 20:46:35
 > ***************
 > *** 28,33 ****
 > --- 28,34 ----
 >   ;  the Free Software Foundation, 59 Temple Place - Suite 330,
 >   ;  Boston, MA 02111-1307, USA.
 > 
 > + #ifndef __PRO__
 >         .SPACE $PRIVATE$
 >         .SUBSPA $DATA$,QUAD=1,ALIGN=8,ACCESS=31
 >         .SUBSPA $BSS$,QUAD=1,ALIGN=8,ACCESS=31,ZERO,SORT=82
 > ***************
 > *** 35,45 ****
 >         .SUBSPA $LIT$,QUAD=0,ALIGN=8,ACCESS=44
 >         .SUBSPA $CODE$,QUAD=0,ALIGN=8,ACCESS=44,CODE_ONLY
 >         .SUBSPA $MILLICODE$,QUAD=0,ALIGN=8,ACCESS=44,SORT=8
 > !
 >         .IMPORT $$dyncall,MILLICODE
 >         .SPACE $TEXT$
 >         .SUBSPA $CODE$
 > !
 >   ; Simply call with the address of the desired import stub in %r22 and
 >   ; arguments in the normal place (%r26-%r23 and stack slots).
 >   ;
 > --- 36,49 ----
 >         .SUBSPA $LIT$,QUAD=0,ALIGN=8,ACCESS=44
 >         .SUBSPA $CODE$,QUAD=0,ALIGN=8,ACCESS=44,CODE_ONLY
 >         .SUBSPA $MILLICODE$,QUAD=0,ALIGN=8,ACCESS=44,SORT=8
 > ! #endif
 >         .IMPORT $$dyncall,MILLICODE
 > + #ifndef __PRO__
 >         .SPACE $TEXT$
 >         .SUBSPA $CODE$
 > ! #else
 > !       .text
 > ! #endif
 >   ; Simply call with the address of the desired import stub in %r22 and
 >   ; arguments in the normal place (%r26-%r23 and stack slots).
 >   ;
 > Index: pa/pa-pro-end.h
 > ===================================================================
 > RCS file: /cvs/gcc/gcc/gcc/config/pa/pa-pro-end.h,v
 > retrieving revision 1.5
 > diff -c -p -r1.5 pa-pro-end.h
 > *** pa-pro-end.h        2000/11/02 23:29:12     1.5
 > --- pa-pro-end.h        2002/03/26 20:46:35
 > *************** Boston, MA 02111-1307, USA.  */
 > *** 30,36 ****
 >   #define LIB_SPEC "%{!p:%{!pg:-lc}}%{p: -L/lib/libp/ -lc}%{pg:
 > -L/lib/libp/ -lc}"
 > 
 >   #undef CPP_PREDEFINES
 > ! #define CPP_PREDEFINES "-Dhppa -DPWB -Acpu=hppa -Amachine=hppa"
 > 
 >   /* hpux8 and later have C++ compatible include files, so do not
 >      pretend they are `extern "C"'.  */
 > --- 30,36 ----
 >   #define LIB_SPEC "%{!p:%{!pg:-lc}}%{p: -L/lib/libp/ -lc}%{pg:
 > -L/lib/libp/ -lc}"
 > 
 >   #undef CPP_PREDEFINES
 > ! #define CPP_PREDEFINES "-Dhppa -DPWB -D__PRO__ -Acpu=hppa
 > -Amachine=hppa"
 > 
 >   /* hpux8 and later have C++ compatible include files, so do not
 >      pretend they are `extern "C"'.  */
 
 -- 
 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
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