Re: X86-64 setup/configure support patch

[Bo Thorsen <bo at sonofthor dot dk>]

On torsdag 20 september 2001 12:20, Bo Thorsen wrote:
> This patch adds the support needed for gcc to be set up for x86-64 support.
> gcc couldn't bootstrap before I added this, so I couldn't do any testing.
> There shouldn't be anything here that affects i386 or any other arch
> though.

I just successfully bootstrapped it on i386. Can I commit this?

Bo.

> 2001-09-20  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.
> 	* config/i386/att.h: Add ASM_X definitions for x86-64.
>
> 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	2001/09/20 11:19:07
> @@ -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	Thu Sep 20 04:19:07 2001
> @@ -0,0 +1,25 @@
> +/* OS independent definitions for AMD x86-64.
> +   Copyright (C) 2000 Free Software Foundation, Inc.
> +   Contributed by Bo Thorsen
> +
> +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
> Index: config/i386/linux64.h
> ===================================================================
> RCS file: linux64.h
> diff -N linux64.h
> --- /dev/null	Tue May  5 13:32:27 1998
> +++ linux64.h	Thu Sep 20 04:19:07 2001
> @@ -0,0 +1,187 @@
> +/* Definitions for AMD x86_64 running Linux-based GNU systems with ELF
> format.
> +   Copyright (C) 2000 Free Software Foundation, Inc.
> +   Contributed by Jan Hubicka 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
> +
> +/* 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
> +
> +/* A C statement (sans semicolon) to output an element in the table of
> +   global constructors.  */
> +#undef ASM_OUTPUT_CONSTRUCTOR
> +#define ASM_OUTPUT_CONSTRUCTOR(FILE,NAME)				\
> +  do {									\
> +    ctors_section ();							\
> +    fprintf (FILE, "%s", TARGET_64BIT ? QUAD_ASM_OP : INT_ASM_OP);	\
> +    assemble_name (FILE, NAME);						\
> +    fprintf (FILE, "\n");						\
> +  } while (0)
> +
> +/* A C statement (sans semicolon) to output an element in the table of
> +   global destructors.  */
> +#undef ASM_OUTPUT_DESTRUCTOR
> +#define ASM_OUTPUT_DESTRUCTOR(FILE,NAME)       				\
> +  do {									\
> +    dtors_section ();                   				\
> +    fprintf (FILE, "%s", TARGET_64BIT ? QUAD_ASM_OP : INT_ASM_OP);	\
> +    assemble_name (FILE, NAME);              				\
> +    fprintf (FILE, "\n");						\
> +  } while (0)
> Index: config/i386/att.h
> ===================================================================
> RCS file: /cvs/gcc/gcc/gcc/config/i386/att.h,v
> retrieving revision 1.7
> diff -u -r1.7 att.h
> --- att.h	2001/05/20 19:54:04	1.7
> +++ att.h	2001/09/20 11:19:07
> @@ -32,6 +32,8 @@
>
>  #define ASM_SHORT "\t.value\t"
>  #define ASM_LONG "\t.long\t"
> +#define ASM_QUAD "\t.quad\t"
> +#define ASM_DOUBLE "\t.double\t"
>
>  /* How to output an ASCII string constant.  */

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