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1 /* Configuration file for an alpha OpenBSD target.
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2 Copyright (C) 1999, 2003, 2007 Free Software Foundation, Inc.
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3
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4 This file is part of GCC.
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5
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6 GCC is free software; you can redistribute it and/or modify
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7 it under the terms of the GNU General Public License as published by
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8 the Free Software Foundation; either version 3, or (at your option)
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9 any later version.
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10
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11 GCC is distributed in the hope that it will be useful,
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12 but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 GNU General Public License for more details.
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15
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16 You should have received a copy of the GNU General Public License
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17 along with GCC; see the file COPYING3. If not see
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18 <http://www.gnu.org/licenses/>. */
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19
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20 /* We settle for little endian for now. */
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21 #define TARGET_ENDIAN_DEFAULT 0
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22
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23 /* Controlling the compilation driver. */
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24
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25 /* alpha needs __start. */
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26 #undef LINK_SPEC
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27 #define LINK_SPEC \
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28 "%{!nostdlib:%{!r*:%{!e*:-e __start}}} -dc -dp %{assert*}"
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29
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30 /* run-time target specifications */
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31 #define TARGET_OS_CPP_BUILTINS() \
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32 do { \
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33 builtin_define ("__OpenBSD__"); \
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34 builtin_define ("__ANSI_COMPAT"); \
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35 builtin_define ("__unix__"); \
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36 builtin_assert ("system=unix"); \
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37 } while (0)
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38
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39 /* Layout of source language data types. */
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40
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41 /* This must agree with <machine/ansi.h> */
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42 #undef SIZE_TYPE
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43 #define SIZE_TYPE "long unsigned int"
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44
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45 #undef PTRDIFF_TYPE
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46 #define PTRDIFF_TYPE "long int"
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47
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48 #undef WCHAR_TYPE
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49 #define WCHAR_TYPE "int"
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50
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51 #undef WCHAR_TYPE_SIZE
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52 #define WCHAR_TYPE_SIZE 32
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53
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54
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55 #undef PREFERRED_DEBUGGING_TYPE
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56 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
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57
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58 #define LOCAL_LABEL_PREFIX "."
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59
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60 /* We don't have an init section yet. */
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61 #undef HAS_INIT_SECTION
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62
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63 /* collect2 support (assembler format: macros for initialization). */
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64
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65 /* Don't tell collect2 we use COFF as we don't have (yet ?) a dynamic ld
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66 library with the proper functions to handle this -> collect2 will
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67 default to using nm. */
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68 #undef OBJECT_FORMAT_COFF
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69 #undef EXTENDED_COFF
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70
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71 /* Assembler format: exception region output. */
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72
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73 /* All configurations that don't use elf must be explicit about not using
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74 dwarf unwind information. */
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75 #ifdef INCOMING_RETURN_ADDR_RTX
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76 #undef DWARF2_UNWIND_INFO
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77 #define DWARF2_UNWIND_INFO 0
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78 #endif
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79
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80 /* Assembler format: label output. */
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81
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82 /* alpha ecoff supports only weak aliases. */
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83 #undef ASM_WEAKEN_LABEL
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84 #define ASM_WEAKEN_LABEL(FILE,NAME) ASM_OUTPUT_WEAK_ALIAS (FILE,NAME,0)
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85
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86 #define ASM_OUTPUT_WEAK_ALIAS(FILE,NAME,VALUE) \
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87 do { \
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88 fputs ("\t.weakext\t", FILE); \
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89 assemble_name (FILE, NAME); \
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90 if (VALUE) \
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91 { \
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92 fputs (" , ", FILE); \
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93 assemble_name (FILE, VALUE); \
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94 } \
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95 fputc ('\n', FILE); \
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96 } while (0)
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97
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98
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