1 /* Definitions for MIPS systems using GNU userspace.
2 Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
3 2007, 2008, 2010, 2011, 2012 Free Software Foundation, Inc.
5 This file is part of GCC.
7 GCC is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3, or (at your option)
12 GCC is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING3. If not see
19 <http://www.gnu.org/licenses/>. */
22 #define WCHAR_TYPE "int"
24 #undef WCHAR_TYPE_SIZE
25 #define WCHAR_TYPE_SIZE 32
27 #undef ASM_DECLARE_OBJECT_NAME
28 #define ASM_DECLARE_OBJECT_NAME mips_declare_object_name
30 /* If we don't set MASK_ABICALLS, we can't default to PIC. */
32 #define TARGET_DEFAULT MASK_ABICALLS
34 #define TARGET_OS_CPP_BUILTINS() \
36 GNU_USER_TARGET_OS_CPP_BUILTINS(); \
37 /* The GNU C++ standard library requires this. */ \
38 if (c_dialect_cxx ()) \
39 builtin_define ("_GNU_SOURCE"); \
42 #undef SUBTARGET_CPP_SPEC
43 #define SUBTARGET_CPP_SPEC "%{posix:-D_POSIX_SOURCE} %{pthread:-D_REENTRANT}"
45 /* A standard GNU/Linux mapping. On most targets, it is included in
46 CC1_SPEC itself by config/linux.h, but mips.h overrides CC1_SPEC
47 and provides this hook instead. */
48 #undef SUBTARGET_CC1_SPEC
49 #define SUBTARGET_CC1_SPEC "%{profile:-p}"
51 /* -G is incompatible with -KPIC which is the default, so only allow objects
52 in the small data section if the user explicitly asks for it. */
53 #undef MIPS_DEFAULT_GVALUE
54 #define MIPS_DEFAULT_GVALUE 0
56 /* Borrowed from sparc/linux.h */
63 %{rdynamic:-export-dynamic} \
64 -dynamic-linker " GNU_USER_DYNAMIC_LINKER "} \
67 #undef SUBTARGET_ASM_SPEC
68 #define SUBTARGET_ASM_SPEC \
69 "%{!mno-abicalls:%{mplt:-call_nonpic;:-KPIC}}"
71 /* The MIPS assembler has different syntax for .set. We set it to
72 .dummy to trap any errors. */
74 #define SET_ASM_OP "\t.dummy\t"
77 #define ASM_OUTPUT_DEF(FILE,LABEL1,LABEL2) \
79 fputc ( '\t', FILE); \
80 assemble_name (FILE, LABEL1); \
81 fputs ( " = ", FILE); \
82 assemble_name (FILE, LABEL2); \
83 fputc ( '\n', FILE); \
86 /* The glibc _mcount stub will save $v0 for us. Don't mess with saving
87 it, since ASM_OUTPUT_REG_PUSH/ASM_OUTPUT_REG_POP do not work in the
88 presence of $gp-relative calls. */
89 #undef ASM_OUTPUT_REG_PUSH
90 #undef ASM_OUTPUT_REG_POP
94 %{pthread:-lpthread} \
97 %{profile:-lc_p} %{!profile:-lc}}"
99 #ifdef HAVE_AS_NO_SHARED
100 /* Default to -mno-shared for non-PIC. */
101 # define NO_SHARED_SPECS \
102 "%{mshared|mno-shared|fpic|fPIC|fpie|fPIE:;:-mno-shared}"
104 # define NO_SHARED_SPECS ""
107 /* -march=native handling only makes sense with compiler running on
109 #if defined(__mips__)
110 extern const char *host_detect_local_cpu (int argc, const char **argv);
111 # define EXTRA_SPEC_FUNCTIONS \
112 { "local_cpu_detect", host_detect_local_cpu },
114 # define MARCH_MTUNE_NATIVE_SPECS \
115 " %{march=native:%<march=native %:local_cpu_detect(arch)}" \
116 " %{mtune=native:%<mtune=native %:local_cpu_detect(tune)}"
118 # define MARCH_MTUNE_NATIVE_SPECS ""
121 #define LINUX_DRIVER_SELF_SPECS \
123 MARCH_MTUNE_NATIVE_SPECS, \
124 /* -mplt has no effect without -mno-shared. Simplify later \
125 specs handling by removing a redundant option. */ \
126 "%{!mno-shared:%<mplt}", \
127 /* -mplt likewise has no effect for -mabi=64 without -msym32. */ \
128 "%{mabi=64:%{!msym32:%<mplt}}"
130 #undef DRIVER_SELF_SPECS
131 #define DRIVER_SELF_SPECS \
132 BASE_DRIVER_SELF_SPECS, \
133 LINUX_DRIVER_SELF_SPECS
135 /* Similar to standard Linux, but adding -ffast-math support. */
137 #define ENDFILE_SPEC \
138 "%{Ofast|ffast-math|funsafe-math-optimizations:crtfastmath.o%s} \
139 %{shared|pie:crtendS.o%s;:crtend.o%s} crtn.o%s"