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1 /* Definitions of MCore target.
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2 Copyright (C) 1998-2017 Free Software Foundation, Inc.
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3 Contributed by Cygnus Solutions.
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4
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5 This file is part of GCC.
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6
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7 GCC is free software; you can redistribute it and/or modify
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8 it under the terms of the GNU General Public License as published by
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9 the Free Software Foundation; either version 3, or (at your option)
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10 any later version.
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11
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12 GCC is distributed in the hope that it will be useful,
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13 but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 GNU General Public License for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with GCC; see the file COPYING3. If not see
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19 <http://www.gnu.org/licenses/>. */
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20
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21 #ifndef __MCORE_ELF_H__
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22 #define __MCORE_ELF_H__
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23
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24 /* Use DWARF2 debugging info. */
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25 #define DWARF2_DEBUGGING_INFO 1
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26
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27 #undef PREFERRED_DEBUGGING_TYPE
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28 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
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29
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30 #define MCORE_EXPORT_NAME(STREAM, NAME) \
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31 do \
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32 { \
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33 fprintf (STREAM, "\t.section .exports\n"); \
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34 fprintf (STREAM, "\t.ascii \" -export:%s\"\n", \
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35 (* targetm.strip_name_encoding) (NAME)); \
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36 in_section = NULL; \
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37 } \
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38 while (0);
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39
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40 /* Write the extra assembler code needed to declare a function properly.
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41 Some svr4 assemblers need to also have something extra said about the
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42 function's return value. We allow for that here. */
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43 #undef ASM_DECLARE_FUNCTION_NAME
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44 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
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45 do \
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46 { \
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47 if (mcore_dllexport_name_p (NAME)) \
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48 { \
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49 MCORE_EXPORT_NAME (FILE, NAME); \
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50 switch_to_section (function_section (DECL)); \
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51 } \
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52 ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "function"); \
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53 ASM_DECLARE_RESULT (FILE, DECL_RESULT (DECL)); \
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54 ASM_OUTPUT_LABEL (FILE, NAME); \
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55 } \
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56 while (0)
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57
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58 /* Write the extra assembler code needed to declare an object properly. */
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59 #undef ASM_DECLARE_OBJECT_NAME
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60 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \
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61 do \
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62 { \
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63 HOST_WIDE_INT size; \
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64 if (mcore_dllexport_name_p (NAME)) \
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65 { \
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66 section *save_section = in_section; \
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67 MCORE_EXPORT_NAME (FILE, NAME); \
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68 switch_to_section (save_section); \
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69 } \
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70 ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object"); \
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71 size_directive_output = 0; \
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72 if (!flag_inhibit_size_directive && DECL_SIZE (DECL)) \
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73 { \
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74 size_directive_output = 1; \
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75 size = int_size_in_bytes (TREE_TYPE (DECL)); \
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76 ASM_OUTPUT_SIZE_DIRECTIVE (FILE, NAME, size); \
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77 } \
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78 ASM_OUTPUT_LABEL(FILE, NAME); \
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79 } \
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80 while (0)
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81
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82 /* Output the size directive for a decl in rest_of_decl_compilation
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83 in the case where we did not do so before the initializer.
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84 Once we find the error_mark_node, we know that the value of
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85 size_directive_output was set
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86 by ASM_DECLARE_OBJECT_NAME when it was run for the same decl. */
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87 #undef ASM_FINISH_DECLARE_OBJECT
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88 #define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP_LEVEL, AT_END) \
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89 do \
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90 { \
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91 const char * name = XSTR (XEXP (DECL_RTL (DECL), 0), 0); \
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92 HOST_WIDE_INT size; \
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93 if (!flag_inhibit_size_directive && DECL_SIZE (DECL) \
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94 && ! AT_END && TOP_LEVEL \
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95 && DECL_INITIAL (DECL) == error_mark_node \
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96 && !size_directive_output) \
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97 { \
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98 size_directive_output = 1; \
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99 size = int_size_in_bytes (TREE_TYPE (DECL)); \
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100 ASM_OUTPUT_SIZE_DIRECTIVE (FILE, name, size); \
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101 } \
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102 } \
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103 while (0)
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104
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105
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106 #undef STARTFILE_SPEC
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107 #define STARTFILE_SPEC "crt0.o%s crti.o%s crtbegin.o%s"
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108
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109 /* Include the OS stub library, so that the code can be simulated.
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110 This is not the right way to do this. Ideally this kind of thing
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111 should be done in the linker script - but I have not worked out how
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112 to specify the location of a linker script in a gcc command line yet. */
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113 #undef ENDFILE_SPEC
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114 #define ENDFILE_SPEC "%{!mno-lsim:-lsim} crtend.o%s crtn.o%s"
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115
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116 /* The subroutine calls in the .init and .fini sections create literal
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117 pools which must be jumped around.... */
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118 #define FORCE_CODE_SECTION_ALIGN asm ("br 1f ; .literals ; 1:");
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119
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120 #undef CTORS_SECTION_ASM_OP
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121 #define CTORS_SECTION_ASM_OP "\t.section\t.ctors,\"aw\""
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122 #undef DTORS_SECTION_ASM_OP
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123 #define DTORS_SECTION_ASM_OP "\t.section\t.dtors,\"aw\""
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124
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125 #endif /* __MCORE_ELF_H__ */
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