From 70c2cb98fb129b4766b5da0f945dc41fd568c77a Mon Sep 17 00:00:00 2001 From: Max Filippov Date: Sat, 22 Aug 2015 08:44:26 +0300 Subject: [PATCH] xtensa: add uclinux support 2015-10-03 Max Filippov gcc/ * config.gcc (xtensa*-*-uclinux*): New configuration. * config/xtensa/uclinux.h: New file. * config/xtensa/uclinux.opt: New file. libgcc/ * config.host (xtensa*-*-uclinux*): New configuration. Signed-off-by: Max Filippov --- Backported from: r228450 gcc/config.gcc | 5 ++++ gcc/config/xtensa/uclinux.h | 69 +++++++++++++++++++++++++++++++++++++++++++ gcc/config/xtensa/uclinux.opt | 32 ++++++++++++++++++++ libgcc/config.host | 5 ++++ 4 files changed, 111 insertions(+) create mode 100644 gcc/config/xtensa/uclinux.h create mode 100644 gcc/config/xtensa/uclinux.opt Index: b/gcc/config.gcc =================================================================== --- a/gcc/config.gcc +++ b/gcc/config.gcc @@ -2871,6 +2871,11 @@ tm_file="${tm_file} dbxelf.h elfos.h gnu-user.h linux.h glibc-stdint.h xtensa/linux.h" tmake_file="${tmake_file} xtensa/t-xtensa" ;; +xtensa*-*-uclinux*) + tm_file="${tm_file} dbxelf.h elfos.h gnu-user.h linux.h glibc-stdint.h xtensa/uclinux.h" + tmake_file="${tmake_file} xtensa/t-xtensa" + extra_options="${extra_options} xtensa/uclinux.opt" + ;; am33_2.0-*-linux*) tm_file="mn10300/mn10300.h dbxelf.h elfos.h gnu-user.h linux.h glibc-stdint.h mn10300/linux.h" gas=yes gnu_ld=yes Index: b/gcc/config/xtensa/uclinux.h =================================================================== --- /dev/null +++ b/gcc/config/xtensa/uclinux.h @@ -0,0 +1,69 @@ +/* Xtensa uClinux configuration. + Derived from the configuration for GCC for Intel i386 running Linux. + Copyright (C) 2001-2015 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, 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; see the file COPYING3. If not see +. */ + +#undef TARGET_OS_CPP_BUILTINS +#define TARGET_OS_CPP_BUILTINS() \ + do \ + { \ + GNU_USER_TARGET_OS_CPP_BUILTINS (); \ + builtin_define ("__uClinux__"); \ + } \ + while (0) + +#undef SUBTARGET_CPP_SPEC +#define SUBTARGET_CPP_SPEC "%{posix:-D_POSIX_SOURCE} %{pthread:-D_REENTRANT}" + +#undef SIZE_TYPE +#define SIZE_TYPE "unsigned int" + +#undef PTRDIFF_TYPE +#define PTRDIFF_TYPE "int" + +#undef WCHAR_TYPE +#define WCHAR_TYPE "long int" + +#undef WCHAR_TYPE_SIZE +#define WCHAR_TYPE_SIZE 32 + +#undef ASM_SPEC +#define ASM_SPEC \ + "%{mtext-section-literals:--text-section-literals} \ + %{mno-text-section-literals:--no-text-section-literals} \ + %{mtarget-align:--target-align} \ + %{mno-target-align:--no-target-align} \ + %{mlongcalls:--longcalls} \ + %{mno-longcalls:--no-longcalls} \ + %{mauto-litpools:--auto-litpools} \ + %{mno-auto-litpools:--no-auto-litpools}" + +#undef LINK_SPEC +#define LINK_SPEC "%{!no-elf2flt:%{!elf2flt*:-elf2flt}}" + +#undef LOCAL_LABEL_PREFIX +#define LOCAL_LABEL_PREFIX "." + +/* Always enable "-fpic" for Xtensa Linux. */ +#define XTENSA_ALWAYS_PIC 1 + +#undef TARGET_LIBC_HAS_FUNCTION +#define TARGET_LIBC_HAS_FUNCTION no_c99_libc_has_function + +#undef DBX_REGISTER_NUMBER + Index: b/gcc/config/xtensa/uclinux.opt =================================================================== --- /dev/null +++ b/gcc/config/xtensa/uclinux.opt @@ -0,0 +1,32 @@ +; Xtensa uClinux options. + +; Copyright (C) 2015 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, 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; see the file COPYING3. If not see +; . + +; See the GCC internals manual (options.texi) for a description of +; this file's format. + +; Please try to keep this file in ASCII collating order. + +elf2flt +Driver + +elf2flt= +Driver JoinedOrMissing + +; This comment is to ensure we retain the blank line above. Index: b/libgcc/config.host =================================================================== --- a/libgcc/config.host +++ b/libgcc/config.host @@ -1213,6 +1213,11 @@ tmake_file="$tmake_file xtensa/t-xtensa xtensa/t-linux t-slibgcc-libgcc" md_unwind_header=xtensa/linux-unwind.h ;; +xtensa*-*-uclinux*) + tmake_file="$tmake_file xtensa/t-xtensa xtensa/t-linux t-slibgcc-libgcc" + md_unwind_header=xtensa/linux-unwind.h + extra_parts="$extra_parts crtbeginS.o crtbeginT.o crtendS.o" + ;; am33_2.0-*-linux*) # Don't need crtbeginT.o from *-*-linux* default. extra_parts="crtbegin.o crtend.o crtbeginS.o crtendS.o"