1/* Configuration for an OpenBSD i386 target. 2 3 Copyright (C) 2005 Free Software Foundation, Inc. 4 5This file is part of GCC. 6 7GCC is free software; you can redistribute it and/or modify 8it under the terms of the GNU General Public License as published by 9the Free Software Foundation; either version 2, or (at your option) 10any later version. 11 12GCC is distributed in the hope that it will be useful, 13but WITHOUT ANY WARRANTY; without even the implied warranty of 14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15GNU General Public License for more details. 16 17You should have received a copy of the GNU General Public License 18along with GCC; see the file COPYING. If not, write to 19the Free Software Foundation, 51 Franklin Street, Fifth Floor, 20Boston, MA 02110-1301, USA. */ 21 22/* This gets defined in tm.h->linux.h->svr4.h, and keeps us from using 23 libraries compiled with the native cc, so undef it. */ 24#undef NO_DOLLAR_IN_LABEL 25 26/* Override the default comment-starter of "/". */ 27#undef ASM_COMMENT_START 28#define ASM_COMMENT_START "#" 29 30#undef DBX_REGISTER_NUMBER 31#define DBX_REGISTER_NUMBER(n) svr4_dbx_register_map[n] 32 33/* This goes away when the math-emulator is fixed */ 34#undef TARGET_DEFAULT 35#define TARGET_DEFAULT \ 36 (MASK_80387 | MASK_IEEE_FP | MASK_FLOAT_RETURNS | MASK_NO_FANCY_MATH_387) 37 38/* Run-time target specifications */ 39 40#define TARGET_OS_CPP_BUILTINS() \ 41 do \ 42 { \ 43 OPENBSD_OS_CPP_BUILTINS(); \ 44 } \ 45 while (0) 46 47/* As an elf system, we need crtbegin/crtend stuff. */ 48#undef STARTFILE_SPEC 49#define STARTFILE_SPEC "\ 50 %{!shared: %{pg:gcrt0%O%s} %{!pg:%{p:gcrt0%O%s} \ 51 %{!p:%{!static:crt0%O%s} %{static:%{nopie:crt0%O%s} \ 52 %{!nopie:rcrt0%O%s}}}} crtbegin%O%s} %{shared:crtbeginS%O%s}" 53#undef ENDFILE_SPEC 54#define ENDFILE_SPEC "%{!shared:crtend%O%s} %{shared:crtendS%O%s}" 55 56/* Layout of source language data types. */ 57 58/* This must agree with <machine/ansi.h> */ 59#undef SIZE_TYPE 60#define SIZE_TYPE "long unsigned int" 61 62#undef PTRDIFF_TYPE 63#define PTRDIFF_TYPE "long int" 64 65#undef WCHAR_TYPE 66#define WCHAR_TYPE "int" 67 68#undef WCHAR_TYPE_SIZE 69#define WCHAR_TYPE_SIZE BITS_PER_WORD 70 71/* Assembler format: overall framework. */ 72 73#undef ASM_APP_ON 74#define ASM_APP_ON "#APP\n" 75 76#undef ASM_APP_OFF 77#define ASM_APP_OFF "#NO_APP\n" 78 79#undef SET_ASM_OP 80#define SET_ASM_OP "\t.set\t" 81 82/* The following macros were originally stolen from i386v4.h. 83 These have to be defined to get PIC code correct. */ 84 85/* Assembler format: dispatch tables. */ 86 87/* Assembler format: sections. */ 88 89/* Stack & calling: aggregate returns. */ 90 91/* Don't default to pcc-struct-return, because gcc is the only compiler, and 92 we want to retain compatibility with older gcc versions. */ 93#define DEFAULT_PCC_STRUCT_RETURN 0 94 95/* Assembler format: alignment output. */ 96 97#ifdef HAVE_GAS_MAX_SKIP_P2ALIGN 98#define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE,LOG,MAX_SKIP) \ 99 if ((LOG) != 0) {\ 100 if ((MAX_SKIP) == 0) fprintf ((FILE), "\t.p2align %d\n", (LOG)); \ 101 else fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP)); \ 102 } 103#endif 104 105/* Stack & calling: profiling. */ 106 107/* OpenBSD's profiler recovers all information from the stack pointer. 108 The icky part is not here, but in machine/profile.h. */ 109#undef FUNCTION_PROFILER 110#define FUNCTION_PROFILER(FILE, LABELNO) \ 111 fputs (flag_pic ? "\tcall __mcount@PLT\n": "\tcall __mcount\n", FILE); 112 113/* Assembler format: exception region output. */ 114 115/* Assembler format: alignment output. */ 116 117/* Note that we pick up ASM_OUTPUT_MAX_SKIP_ALIGN from i386/gas.h */ 118 119/* Note that we pick up ASM_OUTPUT_MI_THUNK from unix.h. */ 120 121#undef LINK_SPEC 122#define LINK_SPEC \ 123 "%{!shared:%{!nostdlib:%{!r*:%{!e*:-e __start}}}} \ 124 %{shared:-shared} %{R*} \ 125 %{static:-Bstatic} \ 126 %{!static:-Bdynamic} \ 127 %{rdynamic:-export-dynamic} \ 128 %{assert*} \ 129 %{!static:%{!dynamic-linker:-dynamic-linker /usr/libexec/ld.so}} \ 130 %{!nostdlib:-L/usr/lib}" 131 132#define OBSD_HAS_CORRECT_SPECS 133