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1 /* Definitions of target machine for GCC,
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2 for i386/ELF NetBSD systems.
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131
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3 Copyright (C) 2001-2018 Free Software Foundation, Inc.
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4 Contributed by matthew green <mrg@eterna.com.au>
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5
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6 This file is part of GCC.
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7
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8 GCC is free software; you can redistribute it and/or modify
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9 it under the terms of the GNU General Public License as published by
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10 the Free Software Foundation; either version 3, or (at your option)
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11 any later version.
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12
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13 GCC is distributed in the hope that it will be useful,
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14 but WITHOUT ANY WARRANTY; without even the implied warranty of
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15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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16 GNU General Public License for more details.
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17
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18 You should have received a copy of the GNU General Public License
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19 along with GCC; see the file COPYING3. If not see
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20 <http://www.gnu.org/licenses/>. */
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21
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22 #define TARGET_OS_CPP_BUILTINS() \
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23 do \
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24 { \
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25 NETBSD_OS_CPP_BUILTINS_ELF(); \
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26 } \
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27 while (0)
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28
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29
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30 /* Extra specs needed for NetBSD/i386 ELF. */
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31
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32 #undef SUBTARGET_EXTRA_SPECS
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33 #define SUBTARGET_EXTRA_SPECS \
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34 { "netbsd_cpp_spec", NETBSD_CPP_SPEC }, \
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35 { "netbsd_entry_point", NETBSD_ENTRY_POINT },
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36
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37
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38 /* Provide a LINK_SPEC appropriate for a NetBSD/i386 ELF target. */
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39
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40 #undef LINK_SPEC
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41 #define LINK_SPEC NETBSD_LINK_SPEC_ELF
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42
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43 #define NETBSD_ENTRY_POINT "__start"
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44
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45
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46 /* Provide a CPP_SPEC appropriate for NetBSD. */
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47
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48 #undef CPP_SPEC
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49 #define CPP_SPEC "%(netbsd_cpp_spec)"
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50
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51
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52 /* Make gcc agree with <machine/ansi.h> */
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53
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54 #undef SIZE_TYPE
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55 #define SIZE_TYPE "unsigned int"
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56
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57 #undef PTRDIFF_TYPE
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58 #define PTRDIFF_TYPE "int"
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59
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60 #undef ASM_APP_ON
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61 #define ASM_APP_ON "#APP\n"
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62
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63 #undef ASM_APP_OFF
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64 #define ASM_APP_OFF "#NO_APP\n"
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65
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66 #undef ASM_COMMENT_START
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67 #define ASM_COMMENT_START "#"
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68
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69 #undef DBX_REGISTER_NUMBER
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70 #define DBX_REGISTER_NUMBER(n) svr4_dbx_register_map[n]
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71
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72
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73 /* Output assembler code to FILE to call the profiler. */
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74
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75 #undef NO_PROFILE_COUNTERS
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76 #define NO_PROFILE_COUNTERS 1
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77
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78 #undef FUNCTION_PROFILER
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79 #define FUNCTION_PROFILER(FILE, LABELNO) \
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80 { \
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81 if (flag_pic) \
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82 fprintf (FILE, "\tcall __mcount@PLT\n"); \
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83 else \
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84 fprintf (FILE, "\tcall __mcount\n"); \
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85 }
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86
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87
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88 #undef HAS_INIT_SECTION
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89
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90 /* This is how we tell the assembler that two symbols have the same value. */
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91
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92 #define ASM_OUTPUT_DEF(FILE,NAME1,NAME2) \
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93 do { assemble_name(FILE, NAME1); \
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94 fputs(" = ", FILE); \
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95 assemble_name(FILE, NAME2); \
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96 fputc('\n', FILE); } while (0)
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97
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98 /* A C statement to output to the stdio stream FILE an assembler
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99 command to advance the location counter to a multiple of 1<<LOG
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100 bytes if it is within MAX_SKIP bytes.
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101
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102 This is used to align code labels according to Intel recommendations. */
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103
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104 #ifdef HAVE_GAS_MAX_SKIP_P2ALIGN
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105 #define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE, LOG, MAX_SKIP) \
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106 if ((LOG) != 0) { \
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131
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107 if ((MAX_SKIP) == 0 || (MAX_SKIP) >= (1 << (LOG)) - 1) \
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108 fprintf ((FILE), "\t.p2align %d\n", (LOG)); \
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109 else \
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110 fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP)); \
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111 }
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112 #endif
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113
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114 /* We always use gas here, so we don't worry about ECOFF assembler
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115 problems. */
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116 #undef TARGET_GAS
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117 #define TARGET_GAS 1
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118
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119 /* Default to pcc-struct-return, because this is the ELF abi and
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120 we don't care about compatibility with older gcc versions. */
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121 #define DEFAULT_PCC_STRUCT_RETURN 1
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122
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111
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123 #define HAVE_ENABLE_EXECUTE_STACK
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