| blob | 881aec09d94a22129b179b84b7d30630a7e2b29c |
1 From 70c2cb98fb129b4766b5da0f945dc41fd568c77a Mon Sep 17 00:00:00 2001
2 From: Max Filippov <jcmvbkbc@gmail.com>
3 Date: Sat, 22 Aug 2015 08:44:26 +0300
4 Subject: [PATCH] xtensa: add uclinux support
6 2015-10-03 Max Filippov <jcmvbkbc@gmail.com>
7 gcc/
8 * config.gcc (xtensa*-*-uclinux*): New configuration.
9 * config/xtensa/uclinux.h: New file.
10 * config/xtensa/uclinux.opt: New file.
12 libgcc/
13 * config.host (xtensa*-*-uclinux*): New configuration.
15 Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
16 ---
17 Backported from: r228450
19 gcc/config.gcc | 5 ++++
20 gcc/config/xtensa/uclinux.h | 69 +++++++++++++++++++++++++++++++++++++++++++
21 gcc/config/xtensa/uclinux.opt | 32 ++++++++++++++++++++
22 libgcc/config.host | 5 ++++
23 4 files changed, 111 insertions(+)
24 create mode 100644 gcc/config/xtensa/uclinux.h
25 create mode 100644 gcc/config/xtensa/uclinux.opt
27 Index: b/gcc/config.gcc
28 ===================================================================
29 --- a/gcc/config.gcc
30 +++ b/gcc/config.gcc
31 @@ -2871,6 +2871,11 @@
32 tm_file="${tm_file} dbxelf.h elfos.h gnu-user.h linux.h glibc-stdint.h xtensa/linux.h"
33 tmake_file="${tmake_file} xtensa/t-xtensa"
34 ;;
35 +xtensa*-*-uclinux*)
36 + tm_file="${tm_file} dbxelf.h elfos.h gnu-user.h linux.h glibc-stdint.h xtensa/uclinux.h"
37 + tmake_file="${tmake_file} xtensa/t-xtensa"
38 + extra_options="${extra_options} xtensa/uclinux.opt"
39 + ;;
40 am33_2.0-*-linux*)
41 tm_file="mn10300/mn10300.h dbxelf.h elfos.h gnu-user.h linux.h glibc-stdint.h mn10300/linux.h"
42 gas=yes gnu_ld=yes
43 Index: b/gcc/config/xtensa/uclinux.h
44 ===================================================================
45 --- /dev/null
46 +++ b/gcc/config/xtensa/uclinux.h
47 @@ -0,0 +1,69 @@
48 +/* Xtensa uClinux configuration.
49 + Derived from the configuration for GCC for Intel i386 running Linux.
50 + Copyright (C) 2001-2015 Free Software Foundation, Inc.
51 +
52 +This file is part of GCC.
53 +
54 +GCC is free software; you can redistribute it and/or modify it under
55 +the terms of the GNU General Public License as published by the Free
56 +Software Foundation; either version 3, or (at your option) any later
57 +version.
58 +
59 +GCC is distributed in the hope that it will be useful, but WITHOUT ANY
60 +WARRANTY; without even the implied warranty of MERCHANTABILITY or
61 +FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
62 +for more details.
63 +
64 +You should have received a copy of the GNU General Public License
65 +along with GCC; see the file COPYING3. If not see
66 +<http://www.gnu.org/licenses/>. */
67 +
68 +#undef TARGET_OS_CPP_BUILTINS
69 +#define TARGET_OS_CPP_BUILTINS() \
70 + do \
71 + { \
72 + GNU_USER_TARGET_OS_CPP_BUILTINS (); \
73 + builtin_define ("__uClinux__"); \
74 + } \
75 + while (0)
76 +
77 +#undef SUBTARGET_CPP_SPEC
78 +#define SUBTARGET_CPP_SPEC "%{posix:-D_POSIX_SOURCE} %{pthread:-D_REENTRANT}"
79 +
80 +#undef SIZE_TYPE
81 +#define SIZE_TYPE "unsigned int"
82 +
83 +#undef PTRDIFF_TYPE
84 +#define PTRDIFF_TYPE "int"
85 +
86 +#undef WCHAR_TYPE
87 +#define WCHAR_TYPE "long int"
88 +
89 +#undef WCHAR_TYPE_SIZE
90 +#define WCHAR_TYPE_SIZE 32
91 +
92 +#undef ASM_SPEC
93 +#define ASM_SPEC \
94 + "%{mtext-section-literals:--text-section-literals} \
95 + %{mno-text-section-literals:--no-text-section-literals} \
96 + %{mtarget-align:--target-align} \
97 + %{mno-target-align:--no-target-align} \
98 + %{mlongcalls:--longcalls} \
99 + %{mno-longcalls:--no-longcalls} \
100 + %{mauto-litpools:--auto-litpools} \
101 + %{mno-auto-litpools:--no-auto-litpools}"
102 +
103 +#undef LINK_SPEC
104 +#define LINK_SPEC "%{!no-elf2flt:%{!elf2flt*:-elf2flt}}"
105 +
106 +#undef LOCAL_LABEL_PREFIX
107 +#define LOCAL_LABEL_PREFIX "."
108 +
109 +/* Always enable "-fpic" for Xtensa Linux. */
110 +#define XTENSA_ALWAYS_PIC 1
111 +
112 +#undef TARGET_LIBC_HAS_FUNCTION
113 +#define TARGET_LIBC_HAS_FUNCTION no_c99_libc_has_function
114 +
115 +#undef DBX_REGISTER_NUMBER
116 +
117 Index: b/gcc/config/xtensa/uclinux.opt
118 ===================================================================
119 --- /dev/null
120 +++ b/gcc/config/xtensa/uclinux.opt
121 @@ -0,0 +1,32 @@
122 +; Xtensa uClinux options.
123 +
124 +; Copyright (C) 2015 Free Software Foundation, Inc.
125 +;
126 +; This file is part of GCC.
127 +;
128 +; GCC is free software; you can redistribute it and/or modify it under
129 +; the terms of the GNU General Public License as published by the Free
130 +; Software Foundation; either version 3, or (at your option) any later
131 +; version.
132 +;
133 +; GCC is distributed in the hope that it will be useful, but WITHOUT ANY
134 +; WARRANTY; without even the implied warranty of MERCHANTABILITY or
135 +; FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
136 +; for more details.
137 +;
138 +; You should have received a copy of the GNU General Public License
139 +; along with GCC; see the file COPYING3. If not see
140 +; <http://www.gnu.org/licenses/>.
141 +
142 +; See the GCC internals manual (options.texi) for a description of
143 +; this file's format.
144 +
145 +; Please try to keep this file in ASCII collating order.
146 +
147 +elf2flt
148 +Driver
149 +
150 +elf2flt=
151 +Driver JoinedOrMissing
152 +
153 +; This comment is to ensure we retain the blank line above.
154 Index: b/libgcc/config.host
155 ===================================================================
156 --- a/libgcc/config.host
157 +++ b/libgcc/config.host
158 @@ -1213,6 +1213,11 @@
159 tmake_file="$tmake_file xtensa/t-xtensa xtensa/t-linux t-slibgcc-libgcc"
160 md_unwind_header=xtensa/linux-unwind.h
161 ;;
162 +xtensa*-*-uclinux*)
163 + tmake_file="$tmake_file xtensa/t-xtensa xtensa/t-linux t-slibgcc-libgcc"
164 + md_unwind_header=xtensa/linux-unwind.h
165 + extra_parts="$extra_parts crtbeginS.o crtbeginT.o crtendS.o"
166 + ;;
167 am33_2.0-*-linux*)
168 # Don't need crtbeginT.o from *-*-linux* default.
169 extra_parts="crtbegin.o crtend.o crtbeginS.o crtendS.o"