[PATCH] Add m68k-uclinux target
Bernardo Innocenti
bernie@develer.com
Mon Sep 15 00:25:00 GMT 2003
This is the final patch in the ColdFire/uClinux support set.
It adds the uClinux target definition to GCC and libstdc++.
Unlike the official, 2.95.x based toolchain, GCC 3.4 will
stop abusing the m68k-elf target and use its own target
triplet instead (m68k-unknown-uclinux).
The script that builds the full uClinux toolchain ensures
backwards compatibility by creating a few symbolic links.
For GCC:
2003-09-15 Bernardo Innocenti <bernie@develer.com>
* config/m68k/t-uclinux: New file.
* config/m68k/uclinux.h: Ditto.
* gcc/config.gcc (m68k-*-uclinux*): New target.
For libstdc++:
2003-09-15 Bernardo Innocenti <bernie@develer.com>
* crossconfig.m4 (*-uclinux*): New target.
* configure: Regenerate (well, not really).
diff -Nru gcc-3.4-20030813.orig/gcc/config/m68k/t-uclinux gcc-3.4-20030813/gcc/config/m68k/t-uclinux
--- gcc-3.4-20030813.orig/gcc/config/m68k/t-uclinux 1970-01-01 01:00:00.000000000 +0100
+++ gcc-3.4-20030813/gcc/config/m68k/t-uclinux 2003-08-19 21:29:30.000000000 +0200
@@ -0,0 +1,27 @@
+# Don't run fixproto
+STMP_FIXPROTO =
+
+LIB1ASMSRC = m68k/lb1sf68.asm
+LIB1ASMFUNCS = _mulsi3 _udivsi3 _divsi3 _umodsi3 _modsi3 \
+ _double _float _floatex \
+ _eqdf2 _nedf2 _gtdf2 _gedf2 _ltdf2 _ledf2 \
+ _eqsf2 _nesf2 _gtsf2 _gesf2 _ltsf2 _lesf2
+
+LIB2FUNCS_EXTRA = fpgnulib.c xfgnulib.c
+
+fpgnulib.c: $(srcdir)/config/m68k/fpgnulib.c
+ cp $(srcdir)/config/m68k/fpgnulib.c fpgnulib.c
+xfgnulib.c: $(srcdir)/config/m68k/fpgnulib.c
+ echo '#define EXTFLOAT' > xfgnulib.c
+ cat $(srcdir)/config/m68k/fpgnulib.c >> xfgnulib.c
+
+MULTILIB_OPTIONS = m68000/m5200/m5206e/m528x/m5307/m5407/mcpu32 msep-data/mid-shared-library
+MULTILIB_DIRNAMES =
+MULTILIB_MATCHES = m68000=mc68000 m68000=m68302 mcpu32=m68332 m5206e=m5272
+MULTILIB_EXCEPTIONS = m68000/msep-data* m68000/mid-shared-library* msep-data* mid-shared-library*
+
+LIBGCC = stmp-multilib
+INSTALL_LIBGCC = install-multilib
+
+# We don't use crtbegin.o and crtend.o
+EXTRA_PARTS=
diff -Nru gcc-3.4-20030813.orig/gcc/config/m68k/uclinux.h gcc-3.4-20030813/gcc/config/m68k/uclinux.h
--- gcc-3.4-20030813.orig/gcc/config/m68k/uclinux.h 1970-01-01 01:00:00.000000000 +0100
+++ gcc-3.4-20030813/gcc/config/m68k/uclinux.h 2003-08-20 19:26:09.000000000 +0200
@@ -0,0 +1,61 @@
+/* Definitions of target machine for GNU compiler. m68k/ColdFire based
+ uClinux system using ELF objects with special linker post-processing
+ to produce FLAT executables.
+
+ Copyright (C) 2003 Free Software Foundation, Inc.
+
+This file is part of GNU CC.
+
+GNU CC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU CC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU CC; see the file COPYING. If not, write to
+the Free Software Foundation, 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA. */
+
+
+/* Undo the definition of STARTFILE_SPEC from m68kelf.h so we'll
+ pick the default from gcc.c (just link crt0.o from multilib dir). */
+#undef STARTFILE_SPEC
+
+/* Override the default LIB_SPEC from gcc.c. We don't currently support
+ profiling, or libg.a. */
+#undef LIB_SPEC
+#define LIB_SPEC "\
+%{mid-shared-library:-R libc.gdb%s} -lc \
+"
+
+/* we don't want a .eh_frame section. */
+#define EH_FRAME_IN_DATA_SECTION
+
+/* ??? Quick hack to get constructors working. Make this look more like a
+ COFF target, so the existing dejagnu/libgloss support works. A better
+ solution would be to make the necessary dejagnu and libgloss changes so
+ that we can use normal the ELF constructor mechanism. */
+#undef INIT_SECTION_ASM_OP
+#undef FINI_SECTION_ASM_OP
+#undef ENDFILE_SPEC
+#define ENDFILE_SPEC ""
+
+/* Bring in standard linux defines */
+#undef TARGET_OS_CPP_BUILTINS
+#define TARGET_OS_CPP_BUILTINS() \
+ do \
+ { \
+ builtin_define_std ("mc68000"); \
+ builtin_define ("__uClinux__"); \
+ builtin_define_std ("linux"); \
+ builtin_define_std ("unix"); \
+ builtin_define ("__gnu_linux__"); \
+ builtin_assert ("system=posix"); \
+ } \
+ while (0)
+
diff -Nru gcc-3.4-20030813.orig/gcc/config.gcc gcc-3.4-20030813/gcc/config.gcc
--- gcc-3.4-20030813.orig/gcc/config.gcc 2003-08-08 23:13:37.000000000 +0200
+++ gcc-3.4-20030813/gcc/config.gcc 2003-08-19 21:36:32.000000000 +0200
@@ -1400,6 +1400,11 @@
tm_defines="MOTOROLA USE_GAS LINUX_DEFAULT_ELF"
tmake_file="t-slibgcc-elf-ver t-linux"
;;
+m68k-*-uclinux*) # Motorola m68k/ColdFire running uClinux with uClibc
+ tm_file="m68k/m68k.h m68k/m68k-none.h m68k/m68kelf.h dbxelf.h elfos.h m68k/uclinux.h"
+ tm_defines="MOTOROLA USE_GAS"
+ tmake_file=m68k/t-uclinux
+ ;;
m68k-*-rtems*)
tmake_file="m68k/t-m68kbare t-rtems m68k/t-crtstuff"
tm_file="m68k/m68k-none.h m68k/m68kelf.h dbxelf.h elfos.h m68k/m68kemb.h m68k/m68020-elf.h m68k/rtemself.h rtems.h"
diff -Nru gcc-3.4-20030813.orig/libstdc++-v3/crossconfig.m4 gcc-3.4-20030813/libstdc++-v3/crossconfig.m4
--- gcc-3.4-20030813.orig/libstdc++-v3/crossconfig.m4 2003-08-21 02:34:59.000000000 +0200
+++ gcc-3.4-20030813/libstdc++-v3/crossconfig.m4 2003-08-19 00:18:24.000000000 +0200
@@ -87,7 +87,7 @@
;;
esac
;;
- *-linux*)
+ *-linux* | *-uclinux*)
#os_include_dir="os/gnu-linux"
AC_CHECK_HEADERS([nan.h ieeefp.h endian.h sys/isa_defs.h \
machine/endian.h machine/param.h sys/machine.h sys/types.h \
diff -Nru gcc-3.4-20030813.orig/libstdc++-v3/configure gcc-3.4-20030813/libstdc++-v3/configure
--- gcc-3.4-20030813.orig/libstdc++-v3/configure 2003-08-21 02:34:59.000000000 +0200
+++ gcc-3.4-20030813/libstdc++-v3/configure 2003-08-19 00:19:25.000000000 +0200
@@ -11519,7 +11519,7 @@
;;
esac
;;
- *-linux*)
+ *-linux* | *-uclinux*)
#os_include_dir="os/gnu-linux"
--
// Bernardo Innocenti - Develer S.r.l., R&D dept.
\X/ http://www.develer.com/
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