1 /* Configuration for a MIPS ABI32 OpenBSD target. 2 Copyright (C) 1999, 2003, 2004 Free Software Foundation, Inc. 3 4 This file is part of GCC. 5 6 GCC 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) 9 any later version. 10 11 GCC 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. 15 16 You should have received a copy of the GNU General Public License 17 along with GCC; see the file COPYING. If not, write to 18 the Free Software Foundation, 51 Franklin Street, Fifth Floor, 19 Boston, MA 02110-1301, USA. */ 20 21 /* Definitions needed for OpenBSD, to avoid picking mips 'defaults'. */ 22 23 /* GAS must know this. */ 24 #undef SUBTARGET_ASM_SPEC 25 #define SUBTARGET_ASM_SPEC "%{fPIC|fPIE:-KPIC}" 26 27 #define AS_NEEDS_DASH_FOR_PIPED_INPUT 28 29 /* CPP specific OpenBSD specs. */ 30 #undef SUBTARGET_CPP_SPEC 31 #define SUBTARGET_CPP_SPEC OBSD_CPP_SPEC 32 33 /* Needed for ELF (inspired by netbsd-elf). */ 34 #undef LOCAL_LABEL_PREFIX 35 #define LOCAL_LABEL_PREFIX "." 36 37 /* The profiling lib spec here is not really correct but we leave 38 it as it is until we have some kind of profiling working. */ 39 #define LIB_SPEC OBSD_LIB_SPEC 40 41 /* mips assembler uses .set for arcane purposes. __attribute__((alias)) 42 and friends won't work until we get recent binutils with .weakext 43 support. */ 44 #undef SET_ASM_OP 45 46 #define TARGET_OS_CPP_BUILTINS() \ 47 do { \ 48 builtin_define ("__unix__"); \ 49 builtin_define ("__SYSTYPE_BSD__"); \ 50 builtin_define ("__NO_LEADING_UNDERSCORES__"); \ 51 builtin_define ("__GP_SUPPORT__"); \ 52 builtin_define ("__OpenBSD__"); \ 53 builtin_assert ("system=unix"); \ 54 builtin_assert ("system=OpenBSD"); \ 55 } while (0) 56 57 /* Layout of source language data types. */ 58 59 /* This must agree with <machine/ansi.h>. */ 60 #undef SIZE_TYPE 61 #define SIZE_TYPE "unsigned int" 62 63 #undef PTRDIFF_TYPE 64 #define PTRDIFF_TYPE "int" 65 66 #undef WCHAR_TYPE 67 #define WCHAR_TYPE "int" 68 69 #undef WCHAR_TYPE_SIZE 70 #define WCHAR_TYPE_SIZE 32 71 72 /* Controlling the compilation driver. */ 73 74 /* LINK_SPEC appropriate for OpenBSD: support for GCC options 75 -static, -assert, and -nostdlib. Dynamic loader control. */ 76 #undef LINK_SPEC 77 #define LINK_SPEC \ 78 "%{G*} %{EB} %{EL} %{mips1} %{mips2} %{mips3} \ 79 %{bestGnum} %{shared} %{non_shared} \ 80 %{call_shared} %{no_archive} %{exact_version} \ 81 %{!shared: %{!non_shared: %{!call_shared: -non_shared}}} \ 82 %{!dynamic-linker:-dynamic-linker /usr/libexec/ld.so} \ 83 %{!nostdlib:%{!r*:%{!e*:-e __start}}} -dc -dp \ 84 %{static:-Bstatic} %{!static:-Bdynamic} %{assert*}" 85 86 /* -G is incompatible with -KPIC which is the default, so only allow objects 87 in the small data section if the user explicitly asks for it. */ 88 #undef MIPS_DEFAULT_GVALUE 89 #define MIPS_DEFAULT_GVALUE 0 90 91 92 /* Since gas and gld are standard on OpenBSD, we don't need these. */ 93 #undef ASM_FINAL_SPEC 94 #undef STARTFILE_SPEC 95 96 /* Switch into a generic section. */ 97 #undef TARGET_ASM_NAMED_SECTION 98 #define TARGET_ASM_NAMED_SECTION default_elf_asm_named_section 99