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comparison gcc/config/mips/iris6.h @ 0:a06113de4d67

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author kent <kent@cr.ie.u-ryukyu.ac.jp>
date Fri, 17 Jul 2009 14:47:48 +0900
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children b7f97abdc517
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-1:000000000000 0:a06113de4d67
1 /* Definitions of target machine for GNU compiler. IRIX version 6.
2 Copyright (C) 1994, 1995, 1996, 1997, 1998, 2000, 2001, 2002, 2003, 2004,
3 2005, 2006, 2007, 2008
4 Free Software Foundation, Inc.
5
6 This file is part of GCC.
7
8 GCC is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3, or (at your option)
11 any later version.
12
13 GCC is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with GCC; see the file COPYING3. If not see
20 <http://www.gnu.org/licenses/>. */
21
22 /* Allow some special handling for IRIX 6. */
23 #undef TARGET_IRIX6
24 #define TARGET_IRIX6 1
25
26 /* Default to -mabi=n32 and -mips3. */
27 #undef MULTILIB_DEFAULTS
28 #define MULTILIB_DEFAULTS { "mabi=n32" }
29
30 /* Force the default ABI onto the command line in order to make the specs
31 easier to write. Default to the mips2 ISA for the O32 ABI. */
32 #undef DRIVER_SELF_SPECS
33 #define DRIVER_SELF_SPECS \
34 "%{!mabi=*: -mabi=n32}", \
35 "%{mabi=32: %{!mips*: %{!march*: -mips2}}}", \
36 /* Configuration-independent MIPS rules. */ \
37 BASE_DRIVER_SELF_SPECS
38
39 /* Force the generation of dwarf .debug_frame sections even if not
40 compiling -g. This guarantees that we can unwind the stack. */
41 #define DWARF2_FRAME_INFO 1
42
43 /* The system unwinder in libexc requires a specific dwarf return address
44 column to work. */
45 #undef DWARF_FRAME_RETURN_COLUMN
46 #define DWARF_FRAME_RETURN_COLUMN (FP_REG_LAST + 1)
47
48 #undef MACHINE_TYPE
49 #define MACHINE_TYPE "SGI running IRIX 6.x"
50
51 #ifdef IRIX_USING_GNU_LD
52 #define IRIX_SUBTARGET_LINK_SPEC \
53 "%{mabi=32: -melf32bsmip}%{mabi=n32: -melf32bmipn32}%{mabi=64: -melf64bmip}"
54 #else
55 /* Explicitly hide crt symbols that would normally be marked with
56 a "hidden" visibility attribute.
57
58 We have traditionally disabled this attribute when using the
59 native linker because the native linker's visibility support is
60 not fully-compatible with the GNU linker's. In particular, the
61 native linker does not pull in archive objects purely to resolve
62 references to the object's hidden symbols, whereas the GNU
63 linker does.
64
65 The gcc build system currently hides symbols in some static
66 libraries (typically libgcov.a or libgcc.a) whenever visibility
67 attributes are supported. On targets with GNU semantics, this
68 makes sure that uses of libx.so symbols in one dynamic object are
69 not resolved to libx.a symbols in another dynamic object. But
70 on targets with IRIX semantics, hiding the symbols prevents the
71 static archive from working at all.
72
73 It would probably be better to enable visiblity attributes for
74 IRIX ld and disable the static archives versioning. It shouldn't
75 make anything worse, since libx.a symbols are global by default
76 anyway. However, no-one has volunteered to do this yet. */
77
78 #define IRIX_SUBTARGET_LINK_SPEC \
79 "%{w} -_SYSTYPE_SVR4 -woff 131 \
80 %{shared:-hidden_symbol __dso_handle} \
81 %{mabi=32: -32}%{mabi=n32: -n32}%{mabi=64: -64}%{!mabi*: -n32}"
82 #endif
83
84 /* Profiling is supported via libprof1.a not -lc_p as in IRIX 3. */
85 #undef STARTFILE_SPEC
86 #define STARTFILE_SPEC \
87 "%{!shared: \
88 %{mabi=32:%{pg:gcrt1.o%s} \
89 %{!pg:%{p:mcrt1.o%s libprof1.a%s}%{!p:crt1.o%s}}} \
90 %{mabi=n32: \
91 %{mips4:%{pg:/usr/lib32/mips4/gcrt1.o%s} \
92 %{!pg:%{p:/usr/lib32/mips4/mcrt1.o%s /usr/lib32/mips4/libprof1.a%s} \
93 %{!p:/usr/lib32/mips4/crt1.o%s}}} \
94 %{!mips4:%{pg:/usr/lib32/mips3/gcrt1.o%s} \
95 %{!pg:%{p:/usr/lib32/mips3/mcrt1.o%s /usr/lib32/mips3/libprof1.a%s} \
96 %{!p:/usr/lib32/mips3/crt1.o%s}}}} \
97 %{mabi=64: \
98 %{mips4:%{pg:/usr/lib64/mips4/gcrt1.o} \
99 %{!pg:%{p:/usr/lib64/mips4/mcrt1.o /usr/lib64/mips4/libprof1.a} \
100 %{!p:/usr/lib64/mips4/crt1.o}}} \
101 %{!mips4:%{pg:/usr/lib64/mips3/gcrt1.o} \
102 %{!pg:%{p:/usr/lib64/mips3/mcrt1.o /usr/lib64/mips3/libprof1.a} \
103 %{!p:/usr/lib64/mips3/crt1.o}}}}} \
104 irix-crti.o%s crtbegin.o%s"
105
106 #ifdef IRIX_USING_GNU_LD
107 #define SUBTARGET_DONT_WARN_UNUSED_SPEC ""
108 #define SUBTARGET_WARN_UNUSED_SPEC ""
109 #else
110 #define SUBTARGET_DONT_WARN_UNUSED_SPEC "-dont_warn_unused"
111 #define SUBTARGET_WARN_UNUSED_SPEC "-warn_unused"
112 #endif
113
114 #undef LIB_SPEC
115 #define LIB_SPEC \
116 "%{mabi=n32: %{mips4:-L/usr/lib32/mips4} %{!mips4:-L/usr/lib32/mips3} \
117 -L/usr/lib32} \
118 %{mabi=64: %{mips4:-L/usr/lib64/mips4} %{!mips4:-L/usr/lib64/mips3} \
119 -L/usr/lib64} \
120 %{!shared:" \
121 SUBTARGET_DONT_WARN_UNUSED_SPEC \
122 " %{pthread:-lpthread} %{p:libprof1.a%s}%{pg:libprof1.a%s} -lc " \
123 SUBTARGET_WARN_UNUSED_SPEC "}"
124
125 /* Avoid getting two warnings for libgcc.a everytime we link. libgcc.a
126 contains references to copysignl, so link with libm to resolve them. */
127 #undef LIBGCC_SPEC
128 #define LIBGCC_SPEC \
129 SUBTARGET_DONT_WARN_UNUSED_SPEC " -lgcc -lm " SUBTARGET_WARN_UNUSED_SPEC
130
131 #undef ENDFILE_SPEC
132 #define ENDFILE_SPEC \
133 "crtend.o%s irix-crtn.o%s \
134 %{!shared: \
135 %{mabi=32:crtn.o%s}\
136 %{mabi=n32:%{mips4:/usr/lib32/mips4/crtn.o%s}\
137 %{!mips4:/usr/lib32/mips3/crtn.o%s}}\
138 %{mabi=64:%{mips4:/usr/lib64/mips4/crtn.o%s}\
139 %{!mips4:/usr/lib64/mips3/crtn.o%s}}}"
140
141 #define MIPS_TFMODE_FORMAT mips_extended_format
142
143 #undef SUBTARGET_CPP_SPEC
144 #define SUBTARGET_CPP_SPEC "%{pthread:-D_REENTRANT}"
145