1 /* Definitions for MIPS running Linux-based GNU systems with ELF format.
2 Copyright (C) 1998, 1999 Free Software Foundation, Inc.
4 This file is part of GNU CC.
6 GNU CC is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GNU CC is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU CC; see the file COPYING. If not, write to
18 the Free Software Foundation, 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
22 #if TARGET_ENDIAN_DEFAULT == 0
23 #define TARGET_VERSION fprintf (stderr, " (MIPSel GNU/ELF)");
25 #define TARGET_VERSION fprintf (stderr, " (MIPS GNU/ELF)");
28 /* Required to keep collect2.c happy */
29 #undef OBJECT_FORMAT_COFF
31 /* If we don't set MASK_ABICALLS, we can't default to PIC. */
33 #define TARGET_DEFAULT (MASK_ABICALLS|MASK_GAS)
36 /* Handle #pragma weak and #pragma pack. */
37 #define HANDLE_SYSV_PRAGMA 1
39 /* Use more efficient ``thunks'' to implement C++ vtables. */
40 #undef DEFAULT_VTABLE_THUNKS
41 #define DEFAULT_VTABLE_THUNKS 1
43 /* Don't assume anything about the header files. */
44 #define NO_IMPLICIT_EXTERN_C
46 /* Generate calls to memcpy, etc., not bcopy, etc. */
47 #define TARGET_MEM_FUNCTIONS
49 /* Specify predefined symbols in preprocessor. */
51 #if TARGET_ENDIAN_DEFAULT == 0
52 #define CPP_PREDEFINES "-DMIPSEL -D_MIPSEL -Dunix -Dmips -D_mips \
53 -DR3000 -D_R3000 -Dlinux -Asystem(posix) -Acpu(mips) \
54 -Amachine(mips) -D__ELF__"
56 #define CPP_PREDEFINES "-DMIPSEB -D_MIPSEB -Dunix -Dmips -D_mips \
57 -DR3000 -D_R3000 -Dlinux -Asystem(posix) -Acpu(mips) \
58 -Amachine(mips) -D__ELF__"
61 /* Provide a STARTFILE_SPEC appropriate for GNU/Linux. Here we add
62 the GNU/Linux magical crtbegin.o file (see crtstuff.c) which
63 provides part of the support for getting C++ file-scope static
64 object constructed before entering `main'. */
67 #define STARTFILE_SPEC \
69 %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} %{!p:crt1.o%s}}}\
70 crti.o%s %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
72 /* Provide a ENDFILE_SPEC appropriate for GNU/Linux. Here we tack on
73 the GNU/Linux magical crtend.o file (see crtstuff.c) which
74 provides part of the support for getting C++ file-scope static
75 object constructed before entering `main', followed by a normal
76 GNU/Linux "finalizer" file, `crtn.o'. */
79 #define ENDFILE_SPEC \
80 "%{!shared:crtend.o%s} %{shared:crtendS.o%s} crtn.o%s"
83 /* -G is incompatible with -KPIC which is the default, so only allow objects
84 in the small data section if the user explicitly asks for it. */
85 #undef MIPS_DEFAULT_GVALUE
86 #define MIPS_DEFAULT_GVALUE 0
89 /* Taken from sparc/linux.h. */
92 %{!shared: %{mieee-fp:-lieee} %{pthread:-lpthread} \
93 %{profile:-lc_p} %{!profile: -lc}}"
95 /* Borrowed from sparc/linux.h */
97 #define LINK_SPEC "%{shared:-shared} \
101 %{rdynamic:-export-dynamic} \
102 %{!dynamic-linker:-dynamic-linker /lib/ld.so.1}} \
106 #undef SUBTARGET_ASM_SPEC
107 #define SUBTARGET_ASM_SPEC "-KPIC"
109 /* Undefine the following which were defined in elf.h. This will cause the linux
110 port to continue to use collect2 for constructors/destructors. These may be removed
111 when .ctor/.dtor section support is desired. */
113 #undef CTORS_SECTION_ASM_OP
114 #undef DTORS_SECTION_ASM_OP
116 #undef EXTRA_SECTIONS
117 #define EXTRA_SECTIONS in_sdata, in_sbss, in_rdata
123 #undef EXTRA_SECTION_FUNCTIONS
124 #define EXTRA_SECTION_FUNCTIONS \
125 SECTION_FUNCTION_TEMPLATE(sdata_section, in_sdata, SDATA_SECTION_ASM_OP) \
126 SECTION_FUNCTION_TEMPLATE(sbss_section, in_sbss, SBSS_SECTION_ASM_OP) \
127 SECTION_FUNCTION_TEMPLATE(rdata_section, in_rdata, RDATA_SECTION_ASM_OP)
129 #undef ASM_OUTPUT_CONSTRUCTOR
130 #undef ASM_OUTPUT_DESTRUCTOR
132 #undef CTOR_LIST_BEGIN
134 #undef DTOR_LIST_BEGIN
137 /* End of undefines to turn off .ctor/.dtor section support */