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Re: SH Linux: remove big endian multilib

To: Andrew Haley <aph at cambridge dot redhat dot com>
Subject: Re: SH Linux: remove big endian multilib
From: NIIBE Yutaka <gniibe at m17n dot org>
Date: Fri, 27 Jul 2001 20:25:50 +0900 (JST)
Cc: Joern Rennecke <amylaar at redhat dot com>, kaz Kojima <kkojima at rr dot iij4u dot or dot jp>
Cc: gcc-patches at gcc dot gnu dot org
References: <15198.53597.668480.832931@cuddles.cambridge.redhat.com><200107251858.f6PIwPQ22967@phal.cambridge.redhat.com><15199.6387.263098.345128@cuddles.cambridge.redhat.com>

This patch supports no-multilib for individual sh[34]{eb}? targets.
The work has been done by Kaz Kojima.

I think that sh-unknown-linux-gnu target should support multilib.
I'm afraid of removing multilib supports means:
	sh-unknown-linux-gnu == sh3-unknown-linux-gnu

2001-07-02  kaz Kojima <kkojima@rr.iij4u.or.jp>
	    NIIBE Yutaka <gniibe@m17n.org>

	* config.gcc: Add new configurations sh[34]*-*-linux*.
	* config/sh/t-linux-nomulti: New file.
	* config/sh/sh3-linux.h, config/sh/sh3eb-linux.h,
	config/sh/sh4-linux.h, config/sh/sh4eb-linux.h: New files.

diff -rcNp gcc-3.0/gcc/config/sh/sh3-linux.h gcc-3.0-kaz-gn/gcc/config/sh/sh3-linux.h
*** gcc-3.0/gcc/config/sh/sh3-linux.h	Thu Jan  1 09:00:00 1970
--- gcc-3.0-kaz-gn/gcc/config/sh/sh3-linux.h	Fri Jul 27 17:49:46 2001
***************
*** 0 ****
--- 1 ----
+ /* Currently, SH-3 (little endian) is default for GNU/Linux on SuperH.  */
diff -rcNp gcc-3.0/gcc/config/sh/sh3eb-linux.h gcc-3.0-kaz-gn/gcc/config/sh/sh3eb-linux.h
*** gcc-3.0/gcc/config/sh/sh3eb-linux.h	Thu Jan  1 09:00:00 1970
--- gcc-3.0-kaz-gn/gcc/config/sh/sh3eb-linux.h	Fri Jul 27 18:31:27 2001
***************
*** 0 ****
--- 1,31 ----
+ #undef CPP_SPEC
+ #define CPP_SPEC \
+   "%{!ml:-D__BIG_ENDIAN__} \
+    %{ml:-D__LITTLE_ENDIAN__} \
+    %{m4:-D__SH4__} \
+    %{!m4:-D__SH3__ -D__sh3__} \
+    %{fPIC:-D__PIC__ -D__pic__} \
+    %{fpic:-D__PIC__ -D__pic__} \
+    %{posix:-D_POSIX_SOURCE} \
+    %{pthread:-D_REENTRANT -D_PTHREADS}"
+ 
+ #undef ASM_SPEC
+ #define ASM_SPEC  "%{!ml:-big} %{ml:-little} %{mrelax:-relax}"
+ 
+ #undef CC1_SPEC
+ #define CC1_SPEC \
+   "-musermode %{!ml:-mb} %{!m4:-m3}"
+ 
+ #undef CC1PLUS_SPEC
+ #define CC1PLUS_SPEC \
+   "-musermode %{!ml:-mb} %{!m4:-m3}"
+ 
+ #undef LINK_SPEC
+ #define LINK_SPEC \
+   "%{!ml:-m shelf_linux} %{mrelax:-relax} \
+    %{shared:-shared} \
+    %{!static: \
+      %{rdynamic:-export-dynamic} \
+      %{!dynamic-linker:-dynamic-linker /lib/ld-linux.so.2} \
+      %{!rpath:-rpath /lib}} \
+    %{static:-static}"
diff -rcNp gcc-3.0/gcc/config/sh/sh4-linux.h gcc-3.0-kaz-gn/gcc/config/sh/sh4-linux.h
*** gcc-3.0/gcc/config/sh/sh4-linux.h	Thu Jan  1 09:00:00 1970
--- gcc-3.0-kaz-gn/gcc/config/sh/sh4-linux.h	Fri Jul 27 18:32:29 2001
***************
*** 0 ****
--- 1,21 ----
+ #undef CPP_SPEC
+ #define CPP_SPEC \
+   "%{mb:-D__BIG_ENDIAN__} \
+    %{!mb:-D__LITTLE_ENDIAN__} \
+    %{m3:-D__SH3__ -D__sh3__} \
+    %{!m3:-D__SH4__} \
+    %{fPIC:-D__PIC__ -D__pic__} \
+    %{fpic:-D__PIC__ -D__pic__} \
+    %{posix:-D_POSIX_SOURCE} \
+    %{pthread:-D_REENTRANT -D_PTHREADS}"
+ 
+ #undef ASM_SPEC
+ #define ASM_SPEC  "%{mb:-big} %{!mb:-little} %{mrelax:-relax}"
+ 
+ #undef CC1_SPEC
+ #define CC1_SPEC \
+   "-musermode %{!mb:-ml} %{!m3:-m4}"
+ 
+ #undef CC1PLUS_SPEC
+ #define CC1PLUS_SPEC \
+   "-musermode %{!mb:-ml} %{!m3:-m4}"
diff -rcNp gcc-3.0/gcc/config/sh/sh4eb-linux.h gcc-3.0-kaz-gn/gcc/config/sh/sh4eb-linux.h
*** gcc-3.0/gcc/config/sh/sh4eb-linux.h	Thu Jan  1 09:00:00 1970
--- gcc-3.0-kaz-gn/gcc/config/sh/sh4eb-linux.h	Fri Jul 27 18:32:58 2001
***************
*** 0 ****
--- 1,31 ----
+ #undef CPP_SPEC
+ #define CPP_SPEC \
+   "%{!ml:-D__BIG_ENDIAN__} \
+    %{ml:-D__LITTLE_ENDIAN__} \
+    %{m3:-D__SH3__ -D__sh3__} \
+    %{!m3:-D__SH4__} \
+    %{fPIC:-D__PIC__ -D__pic__} \
+    %{fpic:-D__PIC__ -D__pic__} \
+    %{posix:-D_POSIX_SOURCE} \
+    %{pthread:-D_REENTRANT -D_PTHREADS}"
+ 
+ #undef ASM_SPEC
+ #define ASM_SPEC  "%{!ml:-big} %{ml:-little} %{mrelax:-relax}"
+ 
+ #undef CC1_SPEC
+ #define CC1_SPEC \
+   "-musermode %{!ml:-mb} %{!m3:-m4}"
+ 
+ #undef CC1PLUS_SPEC
+ #define CC1PLUS_SPEC \
+   "-musermode %{!ml:-mb} %{!m3:-m4}"
+ 
+ #undef LINK_SPEC
+ #define LINK_SPEC \
+   "%{!ml:-m shelf_linux} %{mrelax:-relax} \
+    %{shared:-shared} \
+    %{!static: \
+      %{rdynamic:-export-dynamic} \
+      %{!dynamic-linker:-dynamic-linker /lib/ld-linux.so.2} \
+      %{!rpath:-rpath /lib}} \
+    %{static:-static}"
diff -rcNp gcc-3.0/gcc/config/sh/t-linux-nomulti gcc-3.0-kaz-gn/gcc/config/sh/t-linux-nomulti
*** gcc-3.0/gcc/config/sh/t-linux-nomulti	Thu Jan  1 09:00:00 1970
--- gcc-3.0-kaz-gn/gcc/config/sh/t-linux-nomulti	Fri Jul 27 17:49:46 2001
***************
*** 0 ****
--- 1,11 ----
+ LIBGCC = libgcc.a
+ EXTRA_PARTS = crtbegin.o crtbeginS.o crtend.o crtendS.o
+ 
+ SHLIB_MAPFILES += $(srcdir)/config/sh/libgcc-sh.ver
+ 
+ INSTALL_LIBGCC = install-libgcc
+ 
+ MULTILIB_OPTIONS=
+ MULTILIB_DIRNAMES= 
+ MULTILIB_MATCHES = 
+ EXTRA_MULTILIB_PARTS=
diff -rcNp gcc-3.0/gcc/config.gcc gcc-3.0-kaz-gn/gcc/config.gcc
*** gcc-3.0/gcc/config.gcc	Wed Jun  6 04:09:51 2001
--- gcc-3.0-kaz-gn/gcc/config.gcc	Fri Jul 27 17:49:46 2001
*************** powerpc*-*-*)
*** 240,245 ****
--- 240,248 ----
  sparc*-*-*)
  	cpu_type=sparc
  	;;
+ sh*-*-*)
+ 	cpu_type=sh
+ 	;;
  esac
  
  tm_file=${cpu_type}/${cpu_type}.h
*************** sh-*-rtems*)
*** 2991,2999 ****
  	  thread_file='rtems'
  	fi
  	;;
! sh-*-linux*)
  	tm_file="sh/sh.h sh/elf.h sh/linux.h"
! 	tmake_file="sh/t-sh sh/t-elf sh/t-linux"
  	xmake_file=x-linux
  	gas=yes gnu_ld=yes
  	if test x$enable_threads = xyes; then
--- 2994,3022 ----
  	  thread_file='rtems'
  	fi
  	;;
! sh*-*-linux*)
  	tm_file="sh/sh.h sh/elf.h sh/linux.h"
! 	tmake_file="sh/t-sh sh/t-elf t-slibgcc-elf-ver t-linux sh/t-linux"
! 	case $machine in
! 		sh3eb-*)
! 			tm_file="$tm_file sh/sh3eb-linux.h"
! 			tmake_file="$tmake_file sh/t-linux-nomulti"
! 			;;
! 		sh4eb-*)
! 			tm_file="$tm_file sh/sh4eb-linux.h"
! 			tmake_file="$tmake_file sh/t-linux-nomulti"
! 			;;
! 		sh3-*)
! 			tm_file="$tm_file sh/sh3-linux.h"
! 			tmake_file="$tmake_file sh/t-linux-nomulti"
! 			;;
! 		sh4-*)
! 			tm_file="$tm_file sh/sh4-linux.h"
! 			tmake_file="$tmake_file sh/t-linux-nomulti"
! 			;;
! 		*)
! 			;;
! 	esac
  	xmake_file=x-linux
  	gas=yes gnu_ld=yes
  	if test x$enable_threads = xyes; then
--

Follow-Ups:
- Re: SH Linux: remove big endian multilib
  - From: Andrew Haley

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