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162 lines
5.1 KiB
Diff
162 lines
5.1 KiB
Diff
From 70c2cb98fb129b4766b5da0f945dc41fd568c77a Mon Sep 17 00:00:00 2001
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From: Max Filippov <jcmvbkbc@gmail.com>
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Date: Sat, 22 Aug 2015 08:44:26 +0300
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Subject: [PATCH] xtensa: add uclinux support
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2015-10-03 Max Filippov <jcmvbkbc@gmail.com>
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gcc/
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* config.gcc (xtensa*-*-uclinux*): New configuration.
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* config/xtensa/uclinux.h: New file.
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* config/xtensa/uclinux.opt: New file.
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libgcc/
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* config.host (xtensa*-*-uclinux*): New configuration.
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Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
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---
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Backported from: r228450
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gcc/config.gcc | 5 +++
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gcc/config/xtensa/uclinux.h | 69 ++++++++++++++++++++++++++++++++++++++++++
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gcc/config/xtensa/uclinux.opt | 32 +++++++++++++++++++
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libgcc/config.host | 5 +++
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4 files changed, 111 insertions(+)
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create mode 100644 gcc/config/xtensa/uclinux.h
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create mode 100644 gcc/config/xtensa/uclinux.opt
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--- a/gcc/config.gcc
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+++ b/gcc/config.gcc
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@@ -2971,6 +2971,11 @@
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tm_file="${tm_file} dbxelf.h elfos.h gnu-user.h linux.h glibc-stdint.h xtensa/linux.h"
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tmake_file="${tmake_file} xtensa/t-xtensa"
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;;
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+xtensa*-*-uclinux*)
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+ tm_file="${tm_file} dbxelf.h elfos.h gnu-user.h linux.h glibc-stdint.h xtensa/uclinux.h"
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+ tmake_file="${tmake_file} xtensa/t-xtensa"
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+ extra_options="${extra_options} xtensa/uclinux.opt"
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+ ;;
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am33_2.0-*-linux*)
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tm_file="mn10300/mn10300.h dbxelf.h elfos.h gnu-user.h linux.h glibc-stdint.h mn10300/linux.h"
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gas=yes gnu_ld=yes
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--- /dev/null
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+++ b/gcc/config/xtensa/uclinux.h
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@@ -0,0 +1,69 @@
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+/* Xtensa uClinux configuration.
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+ Derived from the configuration for GCC for Intel i386 running Linux.
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+ Copyright (C) 2001-2015 Free Software Foundation, Inc.
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+
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+This file is part of GCC.
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+
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+GCC is free software; you can redistribute it and/or modify it under
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+the terms of the GNU General Public License as published by the Free
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+Software Foundation; either version 3, or (at your option) any later
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+version.
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+
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+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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+WARRANTY; without even the implied warranty of MERCHANTABILITY or
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+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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+for more details.
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+
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+You should have received a copy of the GNU General Public License
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+along with GCC; see the file COPYING3. If not see
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+<http://www.gnu.org/licenses/>. */
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+
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+#undef TARGET_OS_CPP_BUILTINS
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+#define TARGET_OS_CPP_BUILTINS() \
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+ do \
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+ { \
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+ GNU_USER_TARGET_OS_CPP_BUILTINS (); \
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+ builtin_define ("__uClinux__"); \
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+ } \
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+ while (0)
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+
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+#undef SUBTARGET_CPP_SPEC
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+#define SUBTARGET_CPP_SPEC "%{posix:-D_POSIX_SOURCE} %{pthread:-D_REENTRANT}"
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+
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+#undef SIZE_TYPE
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+#define SIZE_TYPE "unsigned int"
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+
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+#undef PTRDIFF_TYPE
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+#define PTRDIFF_TYPE "int"
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+
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+#undef WCHAR_TYPE
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+#define WCHAR_TYPE "long int"
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+
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+#undef WCHAR_TYPE_SIZE
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+#define WCHAR_TYPE_SIZE 32
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+
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+#undef ASM_SPEC
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+#define ASM_SPEC \
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+ "%{mtext-section-literals:--text-section-literals} \
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+ %{mno-text-section-literals:--no-text-section-literals} \
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+ %{mtarget-align:--target-align} \
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+ %{mno-target-align:--no-target-align} \
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+ %{mlongcalls:--longcalls} \
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+ %{mno-longcalls:--no-longcalls} \
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+ %{mauto-litpools:--auto-litpools} \
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+ %{mno-auto-litpools:--no-auto-litpools}"
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+
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+#undef LINK_SPEC
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+#define LINK_SPEC "%{!no-elf2flt:%{!elf2flt*:-elf2flt}}"
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+
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+#undef LOCAL_LABEL_PREFIX
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+#define LOCAL_LABEL_PREFIX "."
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+
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+/* Always enable "-fpic" for Xtensa Linux. */
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+#define XTENSA_ALWAYS_PIC 1
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+
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+#undef TARGET_LIBC_HAS_FUNCTION
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+#define TARGET_LIBC_HAS_FUNCTION no_c99_libc_has_function
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+
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+#undef DBX_REGISTER_NUMBER
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+
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--- /dev/null
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+++ b/gcc/config/xtensa/uclinux.opt
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@@ -0,0 +1,32 @@
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+; Xtensa uClinux options.
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+
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+; Copyright (C) 2015 Free Software Foundation, Inc.
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+;
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+; This file is part of GCC.
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+;
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+; GCC is free software; you can redistribute it and/or modify it under
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+; the terms of the GNU General Public License as published by the Free
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+; Software Foundation; either version 3, or (at your option) any later
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+; version.
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+;
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+; GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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+; WARRANTY; without even the implied warranty of MERCHANTABILITY or
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+; FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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+; for more details.
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+;
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+; You should have received a copy of the GNU General Public License
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+; along with GCC; see the file COPYING3. If not see
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+; <http://www.gnu.org/licenses/>.
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+
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+; See the GCC internals manual (options.texi) for a description of
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+; this file's format.
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+
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+; Please try to keep this file in ASCII collating order.
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+
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+elf2flt
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+Driver
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+
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+elf2flt=
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+Driver JoinedOrMissing
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+
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+; This comment is to ensure we retain the blank line above.
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--- a/libgcc/config.host
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+++ b/libgcc/config.host
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@@ -1287,6 +1287,11 @@
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tmake_file="$tmake_file xtensa/t-xtensa xtensa/t-linux t-slibgcc-libgcc"
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md_unwind_header=xtensa/linux-unwind.h
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;;
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+xtensa*-*-uclinux*)
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+ tmake_file="$tmake_file xtensa/t-xtensa xtensa/t-linux t-slibgcc-libgcc"
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+ md_unwind_header=xtensa/linux-unwind.h
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+ extra_parts="$extra_parts crtbeginS.o crtbeginT.o crtendS.o"
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+ ;;
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am33_2.0-*-linux*)
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# Don't need crtbeginT.o from *-*-linux* default.
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extra_parts="crtbegin.o crtend.o crtbeginS.o crtendS.o"
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