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a7e184fc AM |
1 | /* Definitions of target machine for GNU compiler, for HPs running |
2 | HPUX using the 64bit runtime model. | |
3 | Copyright (C) 1999, 2000 Free Software Foundation, Inc. | |
4 | ||
5 | This file is part of GNU CC. | |
6 | ||
7 | GNU CC is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2, or (at your option) | |
10 | any later version. | |
11 | ||
12 | GNU CC is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GNU CC; see the file COPYING. If not, write to | |
19 | the Free Software Foundation, 59 Temple Place - Suite 330, | |
20 | Boston, MA 02111-1307, USA. */ | |
21 | ||
22 | /* We can debug dynamically linked executables on hpux11; we also | |
23 | want dereferencing of a NULL pointer to cause a SEGV. */ | |
24 | #undef LINK_SPEC | |
25 | #define LINK_SPEC \ | |
26 | "-E %{mlinker-opt:-O} %{!shared:-u main} %{static:-a archive} %{shared:-shared}" | |
27 | ||
28 | /* Like the default, except no -lg. */ | |
29 | #undef LIB_SPEC | |
30 | #define LIB_SPEC \ | |
31 | "%{!shared:\ | |
32 | %{!p:\ | |
33 | %{!pg:\ | |
34 | %{!threads:-lc}\ | |
35 | %{threads:-lcma -lc_r}}\ | |
36 | %{p: -L/lib/libp/ -lc}\ | |
37 | %{pg: -L/lib/libp/ -lc}}} /usr/lib/pa20_64/milli.a" | |
38 | ||
39 | /* Under hpux11, the normal location of the `ld' and `as' programs is the | |
40 | /usr/ccs/bin directory. */ | |
41 | ||
42 | #ifndef CROSS_COMPILE | |
43 | #undef MD_EXEC_PREFIX | |
44 | #define MD_EXEC_PREFIX "/opt/langtools/bin" | |
45 | #endif | |
46 | ||
47 | /* Under hpux11 the normal location of the various *crt*.o files is the | |
48 | /usr/ccs/lib directory. */ | |
49 | ||
50 | #ifndef CROSS_COMPILE | |
51 | #undef MD_STARTFILE_PREFIX | |
52 | #define MD_STARTFILE_PREFIX "/opt/langtools/lib/pa20_64/" | |
53 | #endif | |
54 | ||
55 | /* hpux11 has the new HP assembler. It's still lousy, but it's a whole lot | |
56 | better than the assembler shipped with older versions of hpux. */ | |
57 | #undef NEW_HP_ASSEMBLER | |
58 | #define NEW_HP_ASSEMBLER 1 | |
59 | ||
60 | #undef ASM_FILE_START | |
61 | #define ASM_FILE_START(FILE) \ | |
62 | do { \ | |
63 | if (TARGET_64BIT) \ | |
64 | fputs("\t.LEVEL 2.0w\n", FILE); \ | |
65 | else if (TARGET_PA_20) \ | |
66 | fputs("\t.LEVEL 2.0\n", FILE); \ | |
67 | else if (TARGET_PA_11) \ | |
68 | fputs("\t.LEVEL 1.1\n", FILE); \ | |
69 | else \ | |
70 | fputs("\t.LEVEL 1.0\n", FILE); \ | |
71 | if (profile_flag)\ | |
72 | fprintf (FILE, "\t.IMPORT _mcount, CODE\n");\ | |
73 | if (write_symbols != NO_DEBUG) \ | |
74 | output_file_directive ((FILE), main_input_filename); \ | |
75 | } while (0) | |
76 | ||
77 | /* It looks like DWARF2 will be the easiest debug format to handle on this | |
78 | platform. */ | |
79 | #define OBJECT_FORMAT_ELF | |
80 | #define DWARF2_DEBUGGING_INFO | |
81 | #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG | |
82 | /* This isn't quite ready yet. I'm seeing it mess up some line | |
83 | tables. For example, we're getting lines starting/ending at | |
84 | impossible addresses. */ | |
85 | #define DWARF2_ASM_LINE_DEBUG_INFO 1 | |
86 | ||
87 | ||
88 | /* The rest of this file is copied from the generic svr4.h. One day we | |
89 | would like to simply include svr4.h instead of copying all these | |
90 | definitions. */ | |
91 | ||
92 | /* Support const sections and the ctors and dtors sections for g++. | |
93 | Note that there appears to be two different ways to support const | |
94 | sections at the moment. You can either #define the symbol | |
95 | READONLY_DATA_SECTION (giving it some code which switches to the | |
96 | readonly data section) or else you can #define the symbols | |
97 | EXTRA_SECTIONS, EXTRA_SECTION_FUNCTIONS, SELECT_SECTION, and | |
98 | SELECT_RTX_SECTION. We do both here just to be on the safe side. */ | |
99 | ||
100 | #define USE_CONST_SECTION 1 | |
101 | ||
102 | #define CONST_SECTION_ASM_OP "\t.section\t.rodata" | |
103 | ||
a7e184fc AM |
104 | /* On svr4, we *do* have support for the .init and .fini sections, and we |
105 | can put stuff in there to be executed before and after `main'. We let | |
106 | crtstuff.c and other files know this by defining the following symbols. | |
107 | The definitions say how to change sections to the .init and .fini | |
108 | sections. This is the same for all known svr4 assemblers. */ | |
109 | ||
110 | /* ??? For the time being, we aren't using init sections. */ | |
111 | #if 0 | |
112 | #define INIT_SECTION_ASM_OP "\t.section\t.init" | |
113 | #define FINI_SECTION_ASM_OP "\t.section\t.fini" | |
114 | #endif | |
115 | ||
116 | /* A default list of other sections which we might be "in" at any given | |
117 | time. For targets that use additional sections (e.g. .tdesc) you | |
118 | should override this definition in the target-specific file which | |
119 | includes this file. */ | |
120 | ||
121 | #undef EXTRA_SECTIONS | |
2cc07db4 | 122 | #define EXTRA_SECTIONS in_const |
a7e184fc AM |
123 | |
124 | /* A default list of extra section function definitions. For targets | |
125 | that use additional sections (e.g. .tdesc) you should override this | |
126 | definition in the target-specific file which includes this file. */ | |
127 | ||
128 | #undef EXTRA_SECTION_FUNCTIONS | |
129 | #define EXTRA_SECTION_FUNCTIONS \ | |
2cc07db4 RH |
130 | CONST_SECTION_FUNCTION |
131 | ||
a7e184fc AM |
132 | |
133 | #define READONLY_DATA_SECTION() const_section () | |
134 | ||
135 | #define CONST_SECTION_FUNCTION \ | |
136 | void \ | |
137 | const_section () \ | |
138 | { \ | |
139 | if (!USE_CONST_SECTION) \ | |
140 | text_section(); \ | |
141 | else if (in_section != in_const) \ | |
142 | { \ | |
143 | fprintf (asm_out_file, "%s\n", CONST_SECTION_ASM_OP); \ | |
144 | in_section = in_const; \ | |
145 | } \ | |
146 | } | |
147 | ||
7c262518 RH |
148 | /* Switch into a generic section. */ |
149 | #define TARGET_ASM_NAMED_SECTION default_elf_asm_named_section | |
a7e184fc AM |
150 | |
151 | #define MAKE_DECL_ONE_ONLY(DECL) (DECL_WEAK (DECL) = 1) | |
a7e184fc AM |
152 | #define UNIQUE_SECTION(DECL,RELOC) \ |
153 | do { \ | |
154 | int len; \ | |
155 | char *name, *string, *prefix; \ | |
156 | \ | |
157 | name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (DECL)); \ | |
158 | \ | |
159 | if (! DECL_ONE_ONLY (DECL)) \ | |
160 | { \ | |
161 | prefix = "."; \ | |
162 | if (TREE_CODE (DECL) == FUNCTION_DECL) \ | |
163 | prefix = ".text."; \ | |
164 | else if (DECL_READONLY_SECTION (DECL, RELOC)) \ | |
165 | prefix = ".rodata."; \ | |
166 | else \ | |
167 | prefix = ".data."; \ | |
168 | } \ | |
169 | else if (TREE_CODE (DECL) == FUNCTION_DECL) \ | |
170 | prefix = ".gnu.linkonce.t."; \ | |
171 | else if (DECL_READONLY_SECTION (DECL, RELOC)) \ | |
172 | prefix = ".gnu.linkonce.r."; \ | |
173 | else \ | |
174 | prefix = ".gnu.linkonce.d."; \ | |
175 | \ | |
176 | len = strlen (name) + strlen (prefix); \ | |
177 | string = alloca (len + 1); \ | |
178 | sprintf (string, "%s%s", prefix, name); \ | |
179 | \ | |
180 | DECL_SECTION_NAME (DECL) = build_string (len, string); \ | |
181 | } while (0) | |
182 | ||
183 | #define INT_ASM_OP "\t.dword\t" | |
a7e184fc AM |
184 | |
185 | /* Define the strings used for the special svr4 .type and .size directives. | |
186 | These strings generally do not vary from one system running svr4 to | |
187 | another, but if a given system (e.g. m88k running svr) needs to use | |
188 | different pseudo-op names for these, they may be overridden in the | |
189 | file which includes this one. */ | |
190 | ||
191 | #define TYPE_ASM_OP "\t.type\t" | |
192 | #define SIZE_ASM_OP "\t.size\t" | |
193 | ||
194 | /* This is how we tell the assembler that a symbol is weak. */ | |
195 | ||
196 | #define ASM_WEAKEN_LABEL(FILE,NAME) \ | |
197 | do { fputs ("\t.weak\t", FILE); assemble_name (FILE, NAME); \ | |
198 | fputc ('\n', FILE); } while (0) | |
199 | ||
200 | /* The following macro defines the format used to output the second | |
201 | operand of the .type assembler directive. Different svr4 assemblers | |
202 | expect various different forms for this operand. The one given here | |
203 | is just a default. You may need to override it in your machine- | |
204 | specific tm.h file (depending upon the particulars of your assembler). */ | |
205 | ||
206 | #define TYPE_OPERAND_FMT "@%s" | |
207 | ||
208 | /* Write the extra assembler code needed to declare a function's result. | |
209 | Most svr4 assemblers don't require any special declaration of the | |
210 | result value, but there are exceptions. */ | |
211 | ||
212 | #ifndef ASM_DECLARE_RESULT | |
213 | #define ASM_DECLARE_RESULT(FILE, RESULT) | |
214 | #endif |