needed-list & libstdc++/stdlist problem

[Casper Dik]

>On Jul 15, 1999, Casper Dik <casper@holland.sun.com> wrote:
>
>> Ah, ok; I just downloaded the 07-12 snapshot yesterday and didnt' expect
>> a new one to be present.
>
>We're in release mode :-) Yet another snapshot should be available in
>the next few hours, and it will hopefully be the last one before the
>release.  You'll probably be better off checking out current CVS -r
>gcc-2_95-branch, if you have CVS access.


Right.   I would like to smuggle in a patch that enables bi-arch
for Solaris 7+ by default, even though I know that the
SPARCv9 code generator/runtime support isn't finished yet.  It works
for a lot of code, though (most notably missing is quad fp support)

(patch was posted to egcs-patches before; the thing most up for discussion
is defaulting to bi-arch mode for SPARC for anything over 2.0-2.6)

A sticky problem is teh assmebler; the S8 and patched S& assembler
require %g[23] registers to be declared w/ the .register pseudo op;
the S7 FCS assembler doesn't know that option.

If gcc is configured on a system with that patch, it will fail on
one installed without and vice versa.

Workaround is using -fno-app-regs; in principle, all GNU libraries
should be compiled w/ -fno-app-regs as well (as libraries are
not allowed to use the %g2 and %g3 registers for their own
purposes, not even as scratch.



*** ./gcc/config/sparc/sol2-sld-64.h.orig	Wed Jul 14 15:47:22 1999
--- ./gcc/config/sparc/sol2-sld-64.h	Wed Jul 14 15:53:11 1999
***************
*** 361,363 ****
--- 361,387 ----
      fprintf (FILE, "\n");						\
    } while (0)
  
+ /* This is necessary if the assembler supports .register, but doesn't work
+    otherwise.  */
+ 
+ #ifdef HAVE_AS_REGISTER_PSEUDO_OP
+ 
+ /* This is how to begin an assembly language file, from svr4.h.
+ 
+    The registers g2-g3, g6-g7 need to be declared as scratch or temporary
+    in v9 code with the .register pseudo-op, starting with the Solaris 7
+    assembler patch 107058-01.  This is explained in Sun WorkShop 5.0's
+    /opt/SUNWspro/READMEs/64bit_Compilers (SPARC ASSEMBLER).
+ 
+    gcc on v9 uses g2-g3 only, see sparc.h (FIXED_REGISTERS).  */
+ #undef ASM_FILE_START
+ #define ASM_FILE_START(FILE)                                    \
+   do {								\
+     output_file_directive ((FILE), main_input_filename);	\
+     if (TARGET_ARCH64 && TARGET_APP_REGS)			\
+       {								\
+         fputs ("\t.register %g2, #scratch\n", FILE);		\
+         fputs ("\t.register %g3, #scratch\n", FILE);		\
+       }								\
+   } while (0)
+ #endif /* HAVE_AS_REGISTER_PSEUDO_OP */
*** ./gcc/configure.in.orig	Thu Jun 24 23:45:45 1999
--- ./gcc/configure.in	Wed Jul 14 15:51:22 1999
***************
*** 3120,3125 ****
--- 3120,3134 ----
  		extra_parts="crt1.o crti.o crtn.o gcrt1.o gmon.o crtbegin.o crtend.o"
  		case $machine in
  changequote(,)dnl
+ 		*-*-solaris2.[0-6]*) ;;
+ changequote([,])dnl
+ 		*-*-solaris2*)
+ 			tm_file=sparc/sol2-sld-64.h
+ 			tmake_file="$tmake_file sparc/t-sol2-64"
+ 			;;
+ 		esac
+ 		case $machine in
+ changequote(,)dnl
  		*-*-solaris2.[0-4])
  changequote([,])dnl
  			float_format=i128
***************
*** 4039,4044 ****
--- 4048,4066 ----
  	rm -f conftest.s conftest.o conftest.nm1 conftest.nm2
  fi
  AC_MSG_RESULT($gcc_cv_as_subsections)
+ 
+ AC_MSG_CHECKING(assembler .register pseudo-op support)
+ gcc_cv_as_register_pseudo_op=
+ if test x$gcc_cv_as != x; then
+ 	# Check if we have .register
+ 	echo ".register %g2, #scratch" > conftest.s
+ 	if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
+ 		gcc_cv_as_register_pseudo_op=yes
+ 		AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP)
+ 	fi
+ 	rm -f conftest.s conftest.o
+ fi
+ AC_MSG_RESULT($gcc_cv_as_register_pseudo_op)
  
  AC_MSG_CHECKING(assembler instructions)
  gcc_cv_as_instructions=
*** ./gcc/acconfig.h.orig	Wed Jul 14 15:47:22 1999
--- ./gcc/acconfig.h	Wed Jul 14 15:47:37 1999
***************
*** 29,34 ****
--- 29,37 ----
  /* Define if your assembler supports .balign and .p2align.  */
  #undef HAVE_GAS_BALIGN_AND_P2ALIGN
  
+ /* Define if your assembler supports .register.  */
+ #undef HAVE_AS_REGISTER_PSEUDO_OP
+ 
  /* Define if your assembler supports .subsection and .subsection -1 starts
     emitting at the beginning of your section */
  #undef HAVE_GAS_SUBSECTION_ORDERING
*** ./config-ml.in.orig	Wed Jul 14 15:47:22 1999
--- ./config-ml.in	Wed Jul 14 16:39:14 1999
***************
*** 401,406 ****
--- 401,430 ----
  	  done
  	fi
  	;;
+ sparc*-*-*)
+ 	case " $multidirs " in
+ 	*" m64 "*)
+ 	  # We will not be able to create libraries with -m64 if
+ 	  # we cannot even link a trivial program.  It usually
+ 	  # indicates the 64bit libraries are missing.
+ 	  if echo 'main() {}' > conftest.c &&
+ 	     ${CC-gcc} -m64 conftest.c -o conftest; then
+ 	    :
+ 	  else
+ 	    echo Could not link program with -m64, disabling it.
+ 	    old_multidirs="${multidirs}"
+ 	    multidirs=""
+ 	    for x in ${old_multidirs}; do
+ 	      case "$x" in
+ 	      *m64* ) : ;;
+ 	      *) multidirs="${multidirs} ${x}" ;;
+ 	      esac
+ 	    done
+ 	  fi
+ 	  rm -f conftest.c conftest
+ 	  ;;
+ 	esac
+ 	;;
  esac
  
  # Remove extraneous blanks from multidirs.