1 | /* Target independent definitions for LynxOS. |
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2 | Copyright (C) 1993, 1994, 1995 Free Software Foundation, Inc. |
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3 | |
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4 | This file is part of GNU CC. |
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5 | |
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6 | GNU CC 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 2, or (at your option) |
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9 | any later version. |
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10 | |
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11 | GNU CC 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 GNU CC; see the file COPYING. If not, write to |
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18 | the Free Software Foundation, 59 Temple Place - Suite 330, |
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19 | Boston, MA 02111-1307, USA. */ |
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20 | |
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21 | /* LynxOS is a multi-platform Unix, similar to SVR3, but not identical. |
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22 | We can get quite a bit from generic svr3, but have to do some overrides. */ |
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23 | |
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24 | #include "svr3.h" |
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25 | |
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26 | /* Define various macros, depending on the combination of flags. */ |
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27 | |
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28 | #undef CPP_SPEC |
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29 | #define CPP_SPEC "%{mthreads:-D_MULTITHREADED} \ |
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30 | %{mposix:-D_POSIX_SOURCE} \ |
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31 | %{msystem-v:-I/usr/include_v}" |
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32 | |
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33 | /* No asm spec needed, since using GNU assembler always. */ |
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34 | |
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35 | /* No linker spec needed, since using GNU linker always. */ |
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36 | |
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37 | #undef LIB_SPEC |
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38 | #define LIB_SPEC "%{mthreads:-L/lib/thread/} \ |
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39 | %{msystem-v:-lc_v} \ |
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40 | %{!msystem-v:%{mposix:-lc_p} -lc -lm}" |
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41 | |
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42 | /* Set the appropriate names for the Lynx startfiles. */ |
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43 | |
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44 | #undef STARTFILE_SPEC |
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45 | #define STARTFILE_SPEC "%{p:%{mthreads:thread/pinit1.o%s}%{!mthreads:pinit1.o%s}}%{!p:%{msystem-v:vinit1.o%s -e_start}%{!msystem-v:%{mthreads:thread/init1.o%s}%{!mthreads:init1.o%s}}}" |
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46 | |
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47 | #undef ENDFILE_SPEC |
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48 | #define ENDFILE_SPEC "%{p:_etext.o%s}%{!p:initn.o%s}" |
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49 | |
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50 | /* Override the svr3 versions. */ |
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51 | |
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52 | #undef WCHAR_TYPE |
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53 | #define WCHAR_TYPE "int" |
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54 | |
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55 | #undef PTRDIFF_TYPE |
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56 | #define PTRDIFF_TYPE "long int" |
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57 | |
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58 | /* We want to output DBX (stabs) debugging information normally. */ |
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59 | |
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60 | #define DBX_DEBUGGING_INFO |
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61 | #undef PREFERRED_DEBUGGING_TYPE |
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62 | #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG |
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63 | |
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64 | /* It is convenient to be able to generate standard coff debugging |
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65 | if requested via -gcoff. */ |
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66 | |
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67 | #define SDB_DEBUGGING_INFO |
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68 | |
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69 | /* Be function-relative for block and source line stab directives. */ |
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70 | |
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71 | #define DBX_BLOCKS_FUNCTION_RELATIVE 1 |
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72 | |
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73 | /* but, to make this work, functions must appear prior to line info */ |
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74 | |
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75 | #define DBX_FUNCTION_FIRST |
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76 | |
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77 | /* Generate a blank trailing N_SO to mark the end of the .o file, since |
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78 | we can't depend upon the linker to mark .o file boundaries with |
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79 | embedded stabs. */ |
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80 | |
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81 | #define DBX_OUTPUT_MAIN_SOURCE_FILE_END(FILE, FILENAME) \ |
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82 | fprintf (FILE, \ |
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83 | "\t.text\n\t.stabs \"\",%d,0,0,Letext\nLetext:\n", N_SO) |
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84 | |
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85 | #undef ASM_OUTPUT_SOURCE_LINE |
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86 | #define ASM_OUTPUT_SOURCE_LINE(file, line) \ |
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87 | { static int sym_lineno = 1; \ |
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88 | fprintf (file, ".stabn 68,0,%d,.LM%d-", \ |
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89 | line, sym_lineno); \ |
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90 | assemble_name (file, \ |
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91 | XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0)); \ |
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92 | fprintf (file, "\n.LM%d:\n", sym_lineno); \ |
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93 | sym_lineno += 1; } |
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94 | |
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95 | /* Handle #pragma pack and sometimes #pragma weak. */ |
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96 | |
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97 | #define HANDLE_SYSV_PRAGMA |
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98 | |
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99 | /* Some additional command-line options. */ |
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100 | |
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101 | #define TARGET_THREADS (target_flags & MASK_THREADS) |
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102 | #define MASK_THREADS 0x40000000 |
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103 | |
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104 | #define TARGET_POSIX (target_flags & MASK_POSIX) |
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105 | #define MASK_POSIX 0x20000000 |
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106 | |
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107 | #define TARGET_SYSTEM_V (target_flags & MASK_SYSTEM_V) |
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108 | #define MASK_SYSTEM_V 0x10000000 |
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109 | |
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110 | #undef SUBTARGET_SWITCHES |
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111 | #define SUBTARGET_SWITCHES \ |
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112 | {"threads", MASK_THREADS}, \ |
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113 | {"posix", MASK_POSIX}, \ |
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114 | {"system-v", MASK_SYSTEM_V}, |
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115 | |
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116 | #undef SUBTARGET_OVERRIDE_OPTIONS |
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117 | #define SUBTARGET_OVERRIDE_OPTIONS \ |
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118 | do { \ |
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119 | if (TARGET_SYSTEM_V && profile_flag) \ |
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120 | warning ("-msystem-v and -p are incompatible"); \ |
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121 | if (TARGET_SYSTEM_V && TARGET_THREADS) \ |
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122 | warning ("-msystem-v and -mthreads are incompatible"); \ |
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123 | } while (0) |
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124 | |
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125 | /* Define this so that C++ destructors will use atexit, since LynxOS |
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126 | calls exit after main returns. */ |
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127 | |
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128 | #define HAVE_ATEXIT |
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129 | |
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130 | /* Since init.o et al put all sorts of stuff into the init section, |
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131 | we can't use the standard init section support in crtbegin.o. */ |
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132 | |
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133 | #undef INIT_SECTION_ASM_OP |
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134 | |
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135 | #undef EXTRA_SECTIONS |
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136 | #define EXTRA_SECTIONS in_const, in_bss, in_ctors, in_dtors, in_fini, |
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137 | |
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138 | #undef EXTRA_SECTION_FUNCTIONS |
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139 | #define EXTRA_SECTION_FUNCTIONS \ |
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140 | CONST_SECTION_FUNCTION \ |
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141 | BSS_SECTION_FUNCTION \ |
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142 | CTORS_SECTION_FUNCTION \ |
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143 | DTORS_SECTION_FUNCTION \ |
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144 | FINI_SECTION_FUNCTION |
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145 | |
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146 | #undef CTORS_SECTION_ASM_OP |
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147 | #define CTORS_SECTION_ASM_OP ".section\t.ctors" |
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148 | #undef DTORS_SECTION_ASM_OP |
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149 | #define DTORS_SECTION_ASM_OP ".section\t.dtors" |
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150 | |
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151 | #define INT_ASM_OP ".long" |
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152 | |
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153 | /* A C statement (sans semicolon) to output an element in the table of |
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154 | global constructors. */ |
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155 | #undef ASM_OUTPUT_CONSTRUCTOR |
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156 | #define ASM_OUTPUT_CONSTRUCTOR(FILE,NAME) \ |
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157 | do { \ |
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158 | ctors_section (); \ |
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159 | fprintf (FILE, "\t%s\t ", INT_ASM_OP); \ |
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160 | assemble_name (FILE, NAME); \ |
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161 | fprintf (FILE, "\n"); \ |
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162 | } while (0) |
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163 | |
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164 | /* A C statement (sans semicolon) to output an element in the table of |
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165 | global destructors. */ |
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166 | #undef ASM_OUTPUT_DESTRUCTOR |
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167 | #define ASM_OUTPUT_DESTRUCTOR(FILE,NAME) \ |
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168 | do { \ |
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169 | dtors_section (); \ |
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170 | fprintf (FILE, "\t%s\t ", INT_ASM_OP); \ |
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171 | assemble_name (FILE, NAME); \ |
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172 | fprintf (FILE, "\n"); \ |
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173 | } while (0) |
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174 | |
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175 | #undef DO_GLOBAL_CTORS_BODY |
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176 | #undef DO_GLOBAL_DTORS_BODY |
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177 | |
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178 | /* LynxOS doesn't have mcount. */ |
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179 | #undef FUNCTION_PROFILER |
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180 | #define FUNCTION_PROFILER(file, profile_label_no) |
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