Re: [patches] X86-64 setup/configure support patch, take 3

[Bo Thorsen <bo at sonofthor dot dk>]

On fredag 21 september 2001 06:42, Bo Thorsen wrote:
> This revised patch adds the support needed for gcc to be set up for x86-64
> support. Bootstrapped on i386.

This should have all the small details in it that I have gotten from various 
people. Thanks for the help.

Bo.

2001-09-21  Bo Thorsen  <bo@suse.co.uk>

        * config/i386/linux64.h: New spec file for Linux x86-64 support.
        * config.gcc: Fix tm_file settings for x86-64.
        * config/i386/x86-64.h: New file with OS independent x86-64
        definitions.

Index: config.gcc
===================================================================
RCS file: /cvs/gcc/gcc/gcc/config.gcc,v
retrieving revision 1.91
diff -u -r1.91 config.gcc
--- config.gcc	2001/09/18 21:51:52	1.91
+++ config.gcc	2001/09/21 14:04:13
@@ -222,6 +222,9 @@
 i[34567]86-*-*)
 	cpu_type=i386
 	;;
+x86_64-*-*)
+	cpu_type=i386
+	;;
 hppa*-*-* | parisc*-*-*)
 	cpu_type=pa
 	;;
@@ -1132,6 +1135,17 @@
 			# aka GNU/Linux C library 6
 	xmake_file=x-linux
 	tm_file="i386/i386.h i386/att.h linux.h i386/linux.h"
+	tmake_file="t-slibgcc-elf-ver t-linux i386/t-crtstuff"
+	extra_parts="crtbegin.o crtbeginS.o crtend.o crtendS.o"
+	gnu_ld=yes
+	float_format=i386
+	if test x$enable_threads = xyes; then
+		thread_file='posix'
+	fi
+	;;
+x86_64-*-linux*)
+	xmake_file=x-linux
+	tm_file="i386/x86-64.h i386/i386.h i386/att.h linux.h i386/linux64.h"
 	tmake_file="t-slibgcc-elf-ver t-linux i386/t-crtstuff"
 	extra_parts="crtbegin.o crtbeginS.o crtend.o crtendS.o"
 	gnu_ld=yes
Index: config/i386/x86-64.h
===================================================================
RCS file: x86-64.h
diff -N x86-64.h
--- /dev/null	Tue May  5 13:32:27 1998
+++ x86-64.h	Fri Sep 21 07:04:13 2001
@@ -0,0 +1,43 @@
+/* OS independent definitions for AMD x86-64.
+   Copyright (C) 2000 Free Software Foundation, Inc.
+   Contributed by Bo Thorsen <bo@suse.de>.
+
+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.  */
+
+#define TARGET_64BIT_DEFAULT
+#define NO_BUILTIN_PTRDIFF_TYPE
+#define TARGET_BI_ARCH
+#define NO_BUILTIN_SIZE_TYPE
+
+/* System V Release 4 uses DWARF debugging info.  Buf DWARF1 doesn't do
+   64-bit anything, so we use DWARF2.  */
+
+#undef DWARF2_DEBUGGING_INFO
+#undef DWARF_DEBUGGING_INFO
+#undef DBX_DEBUGGING_INFO
+#define DWARF2_DEBUGGING_INFO
+#define DBX_DEBUGGING_INFO
+#define DWARF2_FRAME_INFO (TARGET_64BIT && TARGET_UNWIND_INFO)
+#define DWARF2_UNWIND_INFO 1
+#define ASYNCHRONOUS_DWARF2_UNWIND_INFO (TARGET_64BIT && TARGET_UNWIND_INFO)
+/* Incorrectly autodetected in cross compilation.  */
+#undef HAVE_AS_DWARF2_DEBUG_LINE
+#define HAVE_AS_DWARF2_DEBUG_LINE
+
+#undef PREFERRED_DEBUGGING_TYPE
+#define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
Index: config/i386/linux64.h
===================================================================
RCS file: linux64.h
diff -N linux64.h
--- /dev/null	Tue May  5 13:32:27 1998
+++ linux64.h	Fri Sep 21 07:04:13 2001
@@ -0,0 +1,147 @@
+/* Definitions for AMD x86-64 running Linux-based GNU systems with ELF 
format.
+   Copyright (C) 2000 Free Software Foundation, Inc.
+   Contributed by Jan Hubicka <jh@suse.cz> based on linux.h.
+
+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.  */
+
+#define LINUX_DEFAULT_ELF
+
+#undef QUAD_ASM_OP
+#define QUAD_ASM_OP                     "\t.quad\t"
+
+#undef TARGET_VERSION
+#define TARGET_VERSION fprintf (stderr, " (x86-64 Linux/ELF)");
+
+/* The svr4 ABI for the i386 says that records and unions are returned
+   in memory.  */
+#undef DEFAULT_PCC_STRUCT_RETURN
+#define DEFAULT_PCC_STRUCT_RETURN 1
+
+#undef ASM_COMMENT_START
+#define ASM_COMMENT_START "#"
+
+/* This is how to output an element of a case-vector that is relative.
+   This is only used for PIC code.  See comments by the `casesi' insn in
+   i386.md for an explanation of the expression this outputs. */
+#undef ASM_OUTPUT_ADDR_DIFF_ELT
+#define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \
+  if (TARGET_64BIT) \
+    fprintf (FILE, "\t.long %s%d-.+4+(.-%s%d)\n", LPREFIX, VALUE, LPREFIX, 
REL); \
+  else	\
+    fprintf (FILE, "\t.long _GLOBAL_OFFSET_TABLE_+[.-%s%d]\n", LPREFIX, 
VALUE)
+
+/* Indicate that jump tables go in the text section.  This is
+   necessary when compiling PIC code.  */
+#define JUMP_TABLES_IN_TEXT_SECTION (flag_pic && !TARGET_64BIT)
+
+#undef DBX_REGISTER_NUMBER
+#define DBX_REGISTER_NUMBER(n) \
+  (TARGET_64BIT ? dbx64_register_map[n] : svr4_dbx_register_map[n])
+
+/* Output assembler code to FILE to call the profiler.
+   To the best of my knowledge, no Linux libc has required the label
+   argument to mcount.  */
+
+#define NO_PROFILE_COUNTERS
+
+#undef FUNCTION_PROFILER
+#define FUNCTION_PROFILER(FILE, LABELNO)  \
+{									\
+  if (flag_pic)								\
+    fprintf (FILE, "\tcall\t*mcount@GOT(%%ebx)\n");			\
+  else									\
+    fprintf (FILE, "\tcall\tmcount\n");					\
+}
+
+#undef SIZE_TYPE
+#define SIZE_TYPE (TARGET_64BIT ? "long unsigned int" : "unsigned int")
+ 
+#undef PTRDIFF_TYPE
+#define PTRDIFF_TYPE (TARGET_64BIT ? "long int" : "int")
+  
+#undef WCHAR_TYPE
+#define WCHAR_TYPE "int"
+   
+#undef WCHAR_TYPE_SIZE
+#define WCHAR_TYPE_SIZE 32
+    
+#undef CPP_PREDEFINES
+#define CPP_PREDEFINES "-D__ELF__ -Dunix -Dlinux -Asystem(posix)"
+
+#undef CPP_SPEC
+#ifdef USE_GNULIBC_1
+#define CPP_SPEC "%(cpp_cpu) %{fPIC:-D__PIC__ -D__pic__} %{fpic:-D__PIC__ 
-D__pic__} %{posix:-D_POSIX_SOURCE}"
+#else
+#define CPP_SPEC "%(cpp_cpu) %{fPIC:-D__PIC__ -D__pic__} %{fpic:-D__PIC__ 
-D__pic__} %{posix:-D_POSIX_SOURCE} %{pthread:-D_REENTRANT} 
%{!m32:-D__LONG_MAX__=9223372036854775807L}"
+#endif
+
+#undef CC1_SPEC
+#define CC1_SPEC "%(cc1_cpu) %{profile:-p}"
+
+/* Provide a LINK_SPEC appropriate for Linux.  Here we provide support
+   for the special GCC options -static and -shared, which allow us to
+   link things in one of these three modes by applying the appropriate
+   combinations of options at link-time. We like to support here for
+   as many of the other GNU linker options as possible. But I don't
+   have the time to search for those flags. I am sure how to add
+   support for -soname shared_object_name. H.J.
+
+   I took out %{v:%{!V:-V}}. It is too much :-(. They can use
+   -Wl,-V.
+
+   When the -shared link option is used a final link is not being
+   done.  */
+
+/* If ELF is the default format, we should not use /lib/elf. */
+
+#undef	LINK_SPEC
+#define LINK_SPEC "%{!m32:-m elf_x86_64} %{m32:-m elf_i386} 
%{shared:-shared} \
+  %{!shared: \
+    %{!ibcs: \
+      %{!static: \
+	%{rdynamic:-export-dynamic} \
+	%{!dynamic-linker:-dynamic-linker /lib/ld64.so.1}} \
+	%{static:-static}}}"
+
+#undef ASM_SPEC
+#define ASM_SPEC "%{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Yd,*} \
+ %{Wa,*:%*} %{m32:--32}"
+
+/* A C statement (sans semicolon) to output to the stdio stream
+   FILE the assembler definition of uninitialized global DECL named
+   NAME whose size is SIZE bytes and alignment is ALIGN bytes.
+   Try to use asm_output_aligned_bss to implement this macro.  */
+
+#define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
+  asm_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN)
+
+/* A C statement to output to the stdio stream FILE an assembler
+   command to advance the location counter to a multiple of 1<<LOG
+   bytes if it is within MAX_SKIP bytes.
+
+   This is used to align code labels according to Intel recommendations.  */
+
+#ifdef HAVE_GAS_MAX_SKIP_P2ALIGN
+#define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE,LOG,MAX_SKIP)			\
+  do {									\
+    if ((LOG) != 0) {							\
+      if ((MAX_SKIP) == 0) fprintf ((FILE), "\t.p2align %d\n", (LOG));	\
+      else fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP));	\
+    }									\
+  } while (0)
+#endif


-- 
     Bo Thorsen                 |   28 Merton Road
     Free software developer    |   Slough, SL1 1QW
     SuSE Labs                  |   England