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66dae892 RK |
1 | /* Operating system specific defines to be used when targeting GCC for |
2 | generic System V Release 3 system. | |
2f83c7d6 | 3 | Copyright (C) 1991, 1996, 2000, 2002, 2004, 2007 Free Software Foundation, Inc. |
66dae892 | 4 | Contributed by Ron Guilmette (rfg@monkeys.com). |
09da0d1c | 5 | |
612aeba5 | 6 | This file is part of GCC. |
09da0d1c | 7 | |
612aeba5 | 8 | GCC is free software; you can redistribute it and/or modify |
09da0d1c | 9 | it under the terms of the GNU General Public License as published by |
2f83c7d6 | 10 | the Free Software Foundation; either version 3, or (at your option) |
09da0d1c RS |
11 | any later version. |
12 | ||
612aeba5 | 13 | GCC is distributed in the hope that it will be useful, |
09da0d1c RS |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
2f83c7d6 NC |
19 | along with GCC; see the file COPYING3. If not see |
20 | <http://www.gnu.org/licenses/>. */ | |
09da0d1c | 21 | |
58535a23 TW |
22 | /* Define a symbol indicating that we are using svr3.h. */ |
23 | #define USING_SVR3_H | |
24 | ||
09da0d1c RS |
25 | /* Define a symbol so that libgcc* can know what sort of operating |
26 | environment and assembler syntax we are targeting for. */ | |
27 | #define SVR3_target | |
28 | ||
c08f71aa | 29 | /* Assembler, linker, library, and startfile spec's. */ |
09da0d1c | 30 | |
09da0d1c | 31 | /* The .file command should always begin the output. */ |
1bc7c5b6 | 32 | #define TARGET_ASM_FILE_START_FILE_DIRECTIVE true |
09da0d1c | 33 | |
09da0d1c RS |
34 | /* This says how to output an assembler line |
35 | to define a global common symbol. */ | |
36 | /* We don't use ROUNDED because the standard compiler doesn't, | |
37 | and the linker gives error messages if a common symbol | |
38 | has more than one length value. */ | |
39 | ||
40 | #undef ASM_OUTPUT_COMMON | |
41 | #define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED) \ | |
42 | ( fputs (".comm ", (FILE)), \ | |
43 | assemble_name ((FILE), (NAME)), \ | |
74eda121 | 44 | fprintf ((FILE), ",%lu\n", (unsigned long)(SIZE))) |
09da0d1c RS |
45 | |
46 | /* This says how to output an assembler line | |
47 | to define a local common symbol. */ | |
48 | ||
49 | /* Note that using bss_section here caused errors | |
50 | in building shared libraries on system V.3. */ | |
51 | #undef ASM_OUTPUT_LOCAL | |
52 | #define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED) \ | |
53 | do { \ | |
54 | int align = exact_log2 (ROUNDED); \ | |
55 | if (align > 2) align = 2; \ | |
d6b5193b | 56 | switch_to_section (data_section); \ |
09da0d1c RS |
57 | ASM_OUTPUT_ALIGN ((FILE), align == -1 ? 2 : align); \ |
58 | ASM_OUTPUT_LABEL ((FILE), (NAME)); \ | |
58e15542 | 59 | fprintf ((FILE), "\t.set .,.+%u\n", (int)(ROUNDED)); \ |
09da0d1c RS |
60 | } while (0) |
61 | ||
09da0d1c RS |
62 | /* Output #ident as a .ident. */ |
63 | ||
0f658c83 | 64 | #undef ASM_OUTPUT_IDENT |
09da0d1c RS |
65 | #define ASM_OUTPUT_IDENT(FILE, NAME) \ |
66 | fprintf (FILE, "\t.ident \"%s\"\n", NAME); | |
67 | ||
68 | /* Use periods rather than dollar signs in special g++ assembler names. */ | |
69 | ||
70 | #define NO_DOLLAR_IN_LABEL | |
71 | ||
09da0d1c RS |
72 | /* System V Release 3 uses COFF debugging info. */ |
73 | ||
23532de9 | 74 | #define SDB_DEBUGGING_INFO 1 |
09da0d1c RS |
75 | |
76 | /* We don't want to output DBX debugging information. */ | |
77 | ||
78 | #undef DBX_DEBUGGING_INFO | |
79 | ||
80 | /* Define the actual types of some ANSI-mandated types. These | |
81 | definitions should work for most SVR3 systems. */ | |
82 | ||
83 | #undef SIZE_TYPE | |
84 | #define SIZE_TYPE "unsigned int" | |
85 | ||
86 | #undef PTRDIFF_TYPE | |
87 | #define PTRDIFF_TYPE "int" | |
88 | ||
89 | #undef WCHAR_TYPE | |
90 | #define WCHAR_TYPE "long int" | |
91 | ||
92 | #undef WCHAR_TYPE_SIZE | |
93 | #define WCHAR_TYPE_SIZE BITS_PER_WORD | |
94 | ||
be97d475 | 95 | /* The prefix to add to user-visible assembler symbols. |
09da0d1c RS |
96 | |
97 | For System V Release 3 the convention is to prepend a leading | |
98 | underscore onto user-level symbol names. */ | |
99 | ||
66dae892 RK |
100 | #undef USER_LABEL_PREFIX |
101 | #define USER_LABEL_PREFIX "_" | |
09da0d1c | 102 | |
a196f01f RS |
103 | /* This is how to store into the string LABEL |
104 | the symbol_ref name of an internal numbered label where | |
105 | PREFIX is the class of label and NUM is the number within the class. | |
106 | This is suitable for output with `assemble_name'. | |
107 | ||
108 | For most svr3 systems, the convention is that any symbol which begins | |
7160dd0c | 109 | with a period is not put into the linker symbol table by the assembler. */ |
a196f01f RS |
110 | |
111 | #undef ASM_GENERATE_INTERNAL_LABEL | |
112 | #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \ | |
e59f7d3d | 113 | sprintf (LABEL, "*%s%s%ld", LOCAL_LABEL_PREFIX, PREFIX, (long)(NUM)) |
7160dd0c CH |
114 | |
115 | /* We want local labels to start with period if made with asm_fprintf. */ | |
116 | #undef LOCAL_LABEL_PREFIX | |
117 | #define LOCAL_LABEL_PREFIX "." | |
a196f01f | 118 | |
ae46c4e0 | 119 | /* Support const sections and the ctors and dtors sections for g++. */ |
09da0d1c | 120 | |
b335c2cc TW |
121 | /* Define a few machine-specific details of the implementation of |
122 | constructors. | |
09da0d1c | 123 | |
b335c2cc TW |
124 | The __CTORS_LIST__ goes in the .init section. Define CTOR_LIST_BEGIN |
125 | and CTOR_LIST_END to contribute to the .init section an instruction to | |
126 | push a word containing 0 (or some equivalent of that). | |
09da0d1c | 127 | |
2cc07db4 | 128 | Define TARGET_ASM_CONSTRUCTOR to push the address of the constructor. */ |
09da0d1c | 129 | |
e662a129 HPN |
130 | #define INIT_SECTION_ASM_OP "\t.section\t.init" |
131 | #define FINI_SECTION_ASM_OP "\t.section .fini,\"x\"" | |
09da0d1c | 132 | #define DTORS_SECTION_ASM_OP FINI_SECTION_ASM_OP |
b335c2cc TW |
133 | |
134 | /* CTOR_LIST_BEGIN and CTOR_LIST_END are machine-dependent | |
135 | because they push on the stack. */ | |
09da0d1c | 136 | |
e5952538 | 137 | #ifndef STACK_GROWS_DOWNWARD |
91141d4f RS |
138 | |
139 | /* Constructor list on stack is in reverse order. Go to the end of the | |
140 | list and go backwards to call constructors in the right order. */ | |
141 | #define DO_GLOBAL_CTORS_BODY \ | |
142 | do { \ | |
143 | func_ptr *p, *beg = alloca (0); \ | |
144 | for (p = beg; *p; p++) \ | |
145 | ; \ | |
146 | while (p != beg) \ | |
147 | (*--p) (); \ | |
09da0d1c RS |
148 | } while (0) |
149 | ||
91141d4f RS |
150 | #else |
151 | ||
152 | /* Constructor list on stack is in correct order. Just call them. */ | |
153 | #define DO_GLOBAL_CTORS_BODY \ | |
154 | do { \ | |
155 | func_ptr *p, *beg = alloca (0); \ | |
156 | for (p = beg; *p; ) \ | |
157 | (*p++) (); \ | |
91141d4f RS |
158 | } while (0) |
159 | ||
160 | #endif /* STACK_GROWS_DOWNWARD */ |