Re: [PATCH] Add support for x86_64-*-gnu-* targets to build x86_64 gnumach/hurd

["Flávio Cruz" <flaviocruz@gmail.com>]

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Ping

On Mon, Jan 9, 2023 at 1:00 PM Flávio Cruz <flaviocruz@gmail.com> wrote:

> Friendly ping
>
> On Mon, Dec 26, 2022 at 12:34 PM Flavio Cruz <flaviocruz@gmail.com> wrote:
>
>> Tested by building a toolchain and compiling gnumach for x86_64 [1].
>> This is the basic version without unwind support which I think is only
>> required to
>> implement exceptions.
>>
>> [1] https://github.com/flavioc/cross-hurd/blob/master/bootstrap-kernel.sh
>> .
>>
>> ---
>>  gcc/config.gcc                  |  5 ++++-
>>  gcc/config/i386/gnu64.h         | 40 +++++++++++++++++++++++++++++++++
>>  libgcc/config.host              |  8 ++++++-
>>  libgcc/config/i386/gnu-unwind.h | 10 +++++++++
>>  4 files changed, 61 insertions(+), 2 deletions(-)
>>  create mode 100644 gcc/config/i386/gnu64.h
>>
>> diff --git a/gcc/config.gcc b/gcc/config.gcc
>> index 95190233820..0e2b15768bf 100644
>> --- a/gcc/config.gcc
>> +++ b/gcc/config.gcc
>> @@ -1955,7 +1955,7 @@ i[34567]86-*-linux* | i[34567]86-*-kfreebsd*-gnu |
>> i[34567]86-*-gnu* | i[34567]8
>>                 ;;
>>         esac
>>         ;;
>> -x86_64-*-linux* | x86_64-*-kfreebsd*-gnu)
>> +x86_64-*-linux* | x86_64-*-kfreebsd*-gnu | x86_64-*-gnu*)
>>         tm_file="${tm_file} i386/unix.h i386/att.h elfos.h gnu-user.h
>> glibc-stdint.h \
>>                  i386/x86-64.h i386/gnu-user-common.h i386/gnu-user64.h"
>>         case ${target} in
>> @@ -1966,6 +1966,9 @@ x86_64-*-linux* | x86_64-*-kfreebsd*-gnu)
>>         x86_64-*-kfreebsd*-gnu)
>>                 tm_file="${tm_file} kfreebsd-gnu.h i386/kfreebsd-gnu64.h"
>>                 ;;
>> +       x86_64-*-gnu*)
>> +               tm_file="${tm_file} gnu.h i386/gnu64.h"
>> +               ;;
>>         esac
>>         tmake_file="${tmake_file} i386/t-linux64"
>>         x86_multilibs="${with_multilib_list}"
>> diff --git a/gcc/config/i386/gnu64.h b/gcc/config/i386/gnu64.h
>> new file mode 100644
>> index 00000000000..a1ecfaa1cdb
>> --- /dev/null
>> +++ b/gcc/config/i386/gnu64.h
>> @@ -0,0 +1,40 @@
>> +/* Configuration for an x86_64 running GNU with ELF as the target
>> machine.  */
>> +
>> +/*
>> +Copyright (C) 2022 Free Software Foundation, Inc.
>> +
>> +This file is part of GCC.
>> +
>> +GCC 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 3 of the License, or
>> +(at your option) any later version.
>> +
>> +GCC 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 GCC.  If not, see <http://www.gnu.org/licenses/>.
>> +*/
>> +
>> +#define GNU_USER_LINK_EMULATION32 "elf_i386"
>> +#define GNU_USER_LINK_EMULATION64 "elf_x86_64"
>> +#define GNU_USER_LINK_EMULATIONX32 "elf32_x86_64"
>> +
>> +#undef GNU_USER_DYNAMIC_LINKER
>> +#define GNU_USER_DYNAMIC_LINKER32 "/lib/ld.so.1"
>> +#define GNU_USER_DYNAMIC_LINKER64 "/lib/ld-x86-64.so.1"
>> +#define GNU_USER_DYNAMIC_LINKERX32 "/lib/ld-x32.so.1"
>> +
>> +#undef STARTFILE_SPEC
>> +#if defined HAVE_LD_PIE
>> +#define STARTFILE_SPEC \
>> +  "%{!shared:
>> %{pg|p|profile:%{static:gcrt0.o%s;:gcrt1.o%s};pie:Scrt1.o%s;static:crt0.o%s;:crt1.o%s}}
>> \
>> +   crti.o%s
>> %{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbegin.o%s}"
>> +#else
>> +#define STARTFILE_SPEC \
>> +  "%{!shared:
>> %{pg|p|profile:%{static:gcrt0.o%s;:gcrt1.o%s};static:crt0.o%s;:crt1.o%s}} \
>> +   crti.o%s
>> %{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbegin.o%s}"
>> +#endif
>> diff --git a/libgcc/config.host b/libgcc/config.host
>> index eb23abe89f5..75fd1b778fe 100644
>> --- a/libgcc/config.host
>> +++ b/libgcc/config.host
>> @@ -751,6 +751,12 @@ x86_64-*-kfreebsd*-gnu)
>>         tmake_file="${tmake_file} i386/t-crtpc t-crtfm i386/t-crtstuff
>> t-dfprules"
>>         tm_file="${tm_file} i386/elf-lib.h"
>>         ;;
>> +x86_64-*-gnu*)
>> +       extra_parts="$extra_parts crtprec32.o crtprec64.o crtprec80.o
>> crtfastmath.o"
>> +       tmake_file="${tmake_file} i386/t-crtpc t-crtfm i386/t-crtstuff
>> t-dfprules"
>> +       tm_file="${tm_file} i386/elf-lib.h"
>> +       md_unwind_header=i386/gnu-unwind.h
>> +       ;;
>>  i[34567]86-pc-msdosdjgpp*)
>>         ;;
>>  i[34567]86-*-lynxos*)
>> @@ -1523,7 +1529,7 @@ esac
>>  case ${host} in
>>  i[34567]86-*-linux* | x86_64-*-linux* | \
>>    i[34567]86-*-kfreebsd*-gnu | x86_64-*-kfreebsd*-gnu | \
>> -  i[34567]86-*-gnu*)
>> +  i[34567]86-*-gnu* | x86_64-*-gnu*)
>>         tmake_file="${tmake_file} t-tls i386/t-linux i386/t-msabi
>> t-slibgcc-libgcc"
>>         if test "$libgcc_cv_cfi" = "yes"; then
>>                 tmake_file="${tmake_file} t-stack i386/t-stack-i386"
>> diff --git a/libgcc/config/i386/gnu-unwind.h
>> b/libgcc/config/i386/gnu-unwind.h
>> index 25eb690e370..2cbfc40ea7e 100644
>> --- a/libgcc/config/i386/gnu-unwind.h
>> +++ b/libgcc/config/i386/gnu-unwind.h
>> @@ -30,6 +30,14 @@ see the files COPYING3 and COPYING.RUNTIME
>> respectively.  If not, see
>>
>>  #include <signal.h>
>>
>> +#ifdef __x86_64__
>> +
>> +/*
>> + * TODO: support for 64 bits needs to be implemented.
>> + */
>> +
>> +#else /* ifdef __x86_64__  */
>> +
>>  #define MD_FALLBACK_FRAME_STATE_FOR x86_gnu_fallback_frame_state
>>
>>  static _Unwind_Reason_Code
>> @@ -138,4 +146,6 @@ x86_gnu_fallback_frame_state
>>    return _URC_NO_REASON;
>>  }
>>
>> +#endif /* ifdef __x86_64__  */
>> +
>>  #endif /* ifndef inhibit_libc */
>> --
>> 2.35.1
>>
>>
>
> --
> Flávio Cruz / flaviocruz@gmail.com
>