1 /* Definitions of target machine for GNU compiler, for HPs running
2 HPUX using the 64bit runtime model.
3 Copyright (C) 1999-2023 Free Software Foundation, Inc.
4
5 This file is part of GCC.
6
7 GCC 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 3, or (at your option)
10 any later version.
11
12 GCC 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 GCC; see the file COPYING3. If not see
19 <http://www.gnu.org/licenses/>. */
20
21 /* We can debug dynamically linked executables on hpux11; we also
22 want dereferencing of a NULL pointer to cause a SEGV. Do not move
23 the "+Accept TypeMismatch" switch. We check for it in collect2
24 to determine which init/fini is needed. */
25 #undef LINK_SPEC
26 #if ((TARGET_DEFAULT | TARGET_CPU_DEFAULT) & MASK_GNU_LD)
27 #define LINK_SPEC \
28 "%{!shared:%{p:-L/lib/pa20_64/libp -L/usr/lib/pa20_64/libp %{!static:\
29 %nwarning: consider linking with '-static' as system libraries with\n\
30 %n profiling support are only provided in archive format}}}\
31 %{!shared:%{pg:-L/lib/pa20_64/libp -L/usr/lib/pa20_64/libp %{!static:\
32 %nwarning: consider linking with '-static' as system libraries with\n\
33 %n profiling support are only provided in archive format}}}\
34 %{!shared:%{!static:%{rdynamic:-E}}}\
35 %{mhp-ld:+Accept TypeMismatch -z} %{mlinker-opt:-O}\
36 %{!shared:-u main %{!nostdlib:%{!nodefaultlibs:-u __cxa_finalize}}}\
37 %{static:-a archive} %{shared:%{mhp-ld:-b}%{!mhp-ld:-shared}}"
38 #else
39 #define LINK_SPEC \
40 "%{!shared:%{p:-L/lib/pa20_64/libp -L/usr/lib/pa20_64/libp %{!static:\
41 %nwarning: consider linking with '-static' as system libraries with\n\
42 %n profiling support are only provided in archive format}}}\
43 %{!shared:%{pg:-L/lib/pa20_64/libp -L/usr/lib/pa20_64/libp %{!static:\
44 %nwarning: consider linking with '-static' as system libraries with\n\
45 %n profiling support are only provided in archive format}}}\
46 %{!shared:%{!static:%{rdynamic:-E}}}\
47 %{!mgnu-ld:+Accept TypeMismatch -z} %{mlinker-opt:-O}\
48 %{!shared:-u main %{!nostdlib:%{!nodefaultlibs:-u __cxa_finalize}}}\
49 %{static:-a archive} %{shared:%{mgnu-ld:-shared}%{!mgnu-ld:-b}}"
50 #endif
51
52 /* Profiling support is only provided in libc.a. However, libprof and
53 libgprof are only available in shared form on HP-UX 11.00. We use
54 the shared form if we are using the GNU linker or an archive form
55 isn't available. We also usually need to link with libdld and it's
56 only available in shared form. */
57 #undef LIB_SPEC
58 #if ((TARGET_DEFAULT | TARGET_CPU_DEFAULT) & MASK_GNU_LD)
59 #define LIB_SPEC \
60 "%{!shared:\
61 %{!p:%{!pg:%{fopenacc|fopenmp|%:gt(%{ftree-parallelize-loops=*:%*} 1):\
62 %{static:-a shared} -lrt %{static:-a archive}}\
63 %{mt|pthread:-lpthread} -lc\
64 %{static:%{!nolibdld:-a shared -ldld -a archive -lc}\
65 %{!mt:%{!pthread:-a shared -lc -a archive}}}}}\
66 %{p:%{!pg:%{static:%{!mhp-ld:-a shared}%{mhp-ld:-a archive_shared}}\
67 -lprof %{static:-a archive}\
68 %{fopenacc|fopenmp|%:gt(%{ftree-parallelize-loops=*:%*} 1):\
69 %{static:-a shared} -lrt %{static:-a archive}}\
70 %{mt|pthread:-lpthread} -lc\
71 %{static:%{!nolibdld:-a shared -ldld -a archive -lc}\
72 %{!mt:%{!pthread:-a shared -lc -a archive}}}}}\
73 %{pg:%{static:%{!mhp-ld:-a shared}%{mhp-ld:-a archive_shared}}\
74 -lgprof %{static:-a archive}\
75 %{fopenacc|fopenmp|%:gt(%{ftree-parallelize-loops=*:%*} 1):\
76 %{static:-a shared} -lrt %{static:-a archive}}\
77 %{mt|pthread:-lpthread} -lc\
78 %{static:%{!nolibdld:-a shared -ldld -a archive -lc}\
79 %{!mt:%{!pthread:-a shared -lc -a archive}}}}}\
80 %{shared:%{mt|pthread:-lpthread}}"
81 #else
82 #define LIB_SPEC \
83 "%{!shared:\
84 %{!p:%{!pg:%{fopenacc|fopenmp|%:gt(%{ftree-parallelize-loops=*:%*} 1):\
85 %{static:-a shared} -lrt %{static:-a archive}}\
86 %{mt|pthread:-lpthread} -lc\
87 %{static:%{!nolibdld:-a shared -ldld -a archive -lc}\
88 %{!mt:%{!pthread:-a shared -lc -a archive}}}}}\
89 %{p:%{!pg:%{static:%{mgnu-ld:-a shared}%{!mgnu-ld:-a archive_shared}}\
90 -lprof %{static:-a archive}\
91 %{fopenacc|fopenmp|%:gt(%{ftree-parallelize-loops=*:%*} 1):\
92 %{static:-a shared} -lrt %{static:-a archive}}\
93 %{mt|pthread:-lpthread} -lc\
94 %{static:%{!nolibdld:-a shared -ldld -a archive -lc}\
95 %{!mt:%{!pthread:-a shared -lc -a archive}}}}}\
96 %{pg:%{static:%{mgnu-ld:-a shared}%{!mgnu-ld:-a archive_shared}}\
97 -lgprof %{static:-a archive}\
98 %{fopenacc|fopenmp|%:gt(%{ftree-parallelize-loops=*:%*} 1):\
99 %{static:-a shared} -lrt %{static:-a archive}}\
100 %{mt|pthread:-lpthread} -lc\
101 %{static:%{!nolibdld:-a shared -ldld -a archive -lc}\
102 %{!mt:%{!pthread:-a shared -lc -a archive}}}}}\
103 %{shared:%{mt|pthread:-lpthread}}"
104 #endif
105
106 /* Under hpux11, the normal location of the `ld' and `as' programs is the
107 /usr/ccs/bin directory. */
108
109 #ifndef CROSS_DIRECTORY_STRUCTURE
110 #undef MD_EXEC_PREFIX
111 #define MD_EXEC_PREFIX "/usr/ccs/bin"
112 #endif
113
114 /* Default prefixes. */
115
116 #undef STANDARD_STARTFILE_PREFIX_1
117 #define STANDARD_STARTFILE_PREFIX_1 "/lib/pa20_64/"
118
119 #undef STANDARD_STARTFILE_PREFIX_2
120 #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/pa20_64/"
121
122 /* Under hpux11 the normal location of the various pa20_64 *crt*.o files
123 is the /usr/ccs/lib/pa20_64 directory. Some files may also be in the
124 /opt/langtools/lib/pa20_64 directory. */
125
126 #ifndef CROSS_DIRECTORY_STRUCTURE
127 #undef MD_STARTFILE_PREFIX
128 #define MD_STARTFILE_PREFIX "/usr/ccs/lib/pa20_64/"
129 #endif
130
131 #ifndef CROSS_DIRECTORY_STRUCTURE
132 #undef MD_STARTFILE_PREFIX_1
133 #define MD_STARTFILE_PREFIX_1 "/opt/langtools/lib/pa20_64/"
134 #endif
135
136 /* This macro specifies the biggest alignment supported by the object
137 file format of this machine.
138
139 The .align directive in the HP assembler allows alignments up to
140 4096 bytes. However, the maximum alignment of a global common symbol
141 is 16 bytes using HP ld. Unfortunately, this macro doesn't provide
142 a method to check for common symbols. */
143 #undef MAX_OFILE_ALIGNMENT
144 #define MAX_OFILE_ALIGNMENT 32768
145
146 /* Due to limitations in the target structure, it isn't currently possible
147 to dynamically switch between the GNU and HP assemblers. */
148 #undef TARGET_GAS
149
150 /* Configure selects the standard ELFOS defines for use with GAS. */
151 #ifdef USING_ELFOS_H
152
153 /* We are using GAS. */
154 #define TARGET_GAS 1
155
156 #undef TARGET_ASM_FILE_START
157 #define TARGET_ASM_FILE_START pa_hpux64_gas_file_start
158
159 /* This is how we output a null terminated string. */
160 #undef STRING_ASM_OP
161 #define STRING_ASM_OP "\t.stringz\t"
162
163 #define TEXT_SECTION_ASM_OP "\t.text"
164 #define DATA_SECTION_ASM_OP "\t.data"
165 #define BSS_SECTION_ASM_OP "\t.section\t.bss"
166
167 #define HP_INIT_ARRAY_SECTION_ASM_OP "\t.section\t.init"
168 #define GNU_INIT_ARRAY_SECTION_ASM_OP "\t.section\t.init_array"
169 #define HP_FINI_ARRAY_SECTION_ASM_OP "\t.section\t.fini"
170 #define GNU_FINI_ARRAY_SECTION_ASM_OP "\t.section\t.fini_array"
171
172 /* We need to override the following two macros defined in elfos.h since
173 the .comm directive has a different syntax and it can't be used for
174 local common symbols. */
175 #undef ASM_OUTPUT_ALIGNED_COMMON
176 #define ASM_OUTPUT_ALIGNED_COMMON(FILE, NAME, SIZE, ALIGN) \
177 pa_asm_output_aligned_common (FILE, NAME, SIZE, ALIGN)
178
179 #undef ASM_OUTPUT_ALIGNED_LOCAL
180 #define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGN) \
181 pa_asm_output_aligned_local (FILE, NAME, SIZE, ALIGN)
182
183 /* The define in pa.h doesn't work with the alias attribute. The
184 default is ok with the following define for GLOBAL_ASM_OP. */
185 #undef TARGET_ASM_GLOBALIZE_LABEL
186
187 /* This is how we globalize a label. */
188 #define GLOBAL_ASM_OP "\t.globl\t"
189
190 /* Hacked version from defaults.h that uses assemble_name_raw
191 instead of assemble_name. A symbol in a type directive that
192 isn't otherwise referenced doesn't cause the symbol to be
193 placed in the symbol table of the assembled object. */
194 #undef ASM_OUTPUT_TYPE_DIRECTIVE
195 #define ASM_OUTPUT_TYPE_DIRECTIVE(STREAM, NAME, TYPE) \
196 do { \
197 fputs (TYPE_ASM_OP, STREAM); \
198 assemble_name_raw (STREAM, NAME); \
199 fputs (", ", STREAM); \
200 fprintf (STREAM, TYPE_OPERAND_FMT, TYPE); \
201 putc ('\n', STREAM); \
202 } while (0)
203
204 /* Hacked version from elfos.h that doesn't output a label. */
205 #undef ASM_DECLARE_FUNCTION_NAME
206 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
207 do { \
208 ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "function"); \
209 ASM_DECLARE_RESULT (FILE, DECL_RESULT (DECL)); \
210 } while (0)
211
212 /* The type of external references must be set correctly for the
213 dynamic loader to work correctly. This is equivalent to the
214 HP assembler's .IMPORT directive but relates more directly to
215 ELF object file types. */
216 #undef ASM_OUTPUT_EXTERNAL
217 #define ASM_OUTPUT_EXTERNAL(FILE, DECL, NAME) \
218 pa_hpux_asm_output_external ((FILE), (DECL), (NAME))
219 #define ASM_OUTPUT_EXTERNAL_REAL(FILE, DECL, NAME) \
220 do { \
221 if (FUNCTION_NAME_P (NAME)) \
222 ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "function"); \
223 else \
224 ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object"); \
225 default_elf_asm_output_external (FILE, DECL, NAME); \
226 } while (0)
227
228 /* We need set the type for external libcalls. Also note that not all
229 libcall names are passed to targetm.encode_section_info (e.g., __main).
230 Thus, we also have to do the section encoding if it hasn't been done
231 already. */
232 #undef ASM_OUTPUT_EXTERNAL_LIBCALL
233 #define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN) \
234 do { \
235 if (!FUNCTION_NAME_P (XSTR (FUN, 0))) \
236 pa_encode_label (FUN); \
237 ASM_OUTPUT_TYPE_DIRECTIVE (FILE, XSTR (FUN, 0), "function"); \
238 } while (0)
239
240 /* We need to use the HP style for internal labels. */
241 #undef ASM_GENERATE_INTERNAL_LABEL
242 #define ASM_GENERATE_INTERNAL_LABEL(LABEL, PREFIX, NUM) \
243 do \
244 { \
245 char *__p; \
246 (LABEL)[0] = '*'; \
247 (LABEL)[1] = (PREFIX)[0]; \
248 (LABEL)[2] = '$'; \
249 __p = stpcpy (&(LABEL)[3], &(PREFIX)[1]); \
250 sprint_ul (__p, (unsigned long) (NUM)); \
251 } \
252 while (0)
253
254
255 #else /* USING_ELFOS_H */
256
257 /* We are not using GAS. */
258 #define TARGET_GAS 0
259
260 /* HPUX 11 has the "new" HP assembler. It's still lousy, but it's a whole
261 lot better than the assembler shipped with older versions of hpux.
262 However, it doesn't support weak symbols and is a bad fit with ELF. */
263 #undef NEW_HP_ASSEMBLER
264 #define NEW_HP_ASSEMBLER 1
265
266 /* It looks like DWARF2 will be the easiest debug format to handle on this
267 platform. */
268 #define DWARF2_DEBUGGING_INFO 1
269
270 /* This target uses the ELF object file format. */
271 #define OBJECT_FORMAT_ELF
272
273 #undef TARGET_ASM_FILE_START
274 #define TARGET_ASM_FILE_START pa_hpux64_hpas_file_start
275
276 #undef TEXT_SECTION_ASM_OP
277 #define TEXT_SECTION_ASM_OP "\t.SUBSPA $CODE$\n"
278 #undef READONLY_DATA_SECTION_ASM_OP
279 #define READONLY_DATA_SECTION_ASM_OP "\t.SUBSPA $LIT$\n"
280 #undef DATA_SECTION_ASM_OP
281 #define DATA_SECTION_ASM_OP "\t.SUBSPA $DATA$\n"
282 #undef BSS_SECTION_ASM_OP
283 #define BSS_SECTION_ASM_OP "\t.SUBSPA $BSS$\n"
284
285 /* We provide explicit defines for CTORS_SECTION_ASM_OP and
286 DTORS_SECTION_ASM_OP since we don't yet have support for
287 named sections with the HP assembler. */
288 #undef CTORS_SECTION_ASM_OP
289 #define CTORS_SECTION_ASM_OP "\t.SUBSPA \\.ctors,QUAD=1,ALIGN=8,ACCESS=31"
290 #undef DTORS_SECTION_ASM_OP
291 #define DTORS_SECTION_ASM_OP "\t.SUBSPA \\.dtors,QUAD=1,ALIGN=8,ACCESS=31"
292
293 #define HP_INIT_ARRAY_SECTION_ASM_OP \
294 "\t.SUBSPA \\.init,QUAD=1,ALIGN=8,ACCESS=31"
295 #define GNU_INIT_ARRAY_SECTION_ASM_OP \
296 "\t.SUBSPA \\.init_array,QUAD=1,ALIGN=8,ACCESS=31"
297 #define HP_FINI_ARRAY_SECTION_ASM_OP \
298 "\t.SUBSPA \\.fini,QUAD=1,ALIGN=8,ACCESS=31"
299 #define GNU_FINI_ARRAY_SECTION_ASM_OP \
300 "\t.SUBSPA \\.fini_array,QUAD=1,ALIGN=8,ACCESS=31"
301
302 #endif /* USING_ELFOS_H */
303
304 /* The following defines, used to run constructors and destructors with
305 the SOM linker under HP-UX 11, are not needed. */
306 #undef HAS_INIT_SECTION
307 #undef LD_INIT_SWITCH
308 #undef LD_FINI_SWITCH
309
310 /* The following STARTFILE_SPEC and ENDFILE_SPEC defines provide the
311 magic needed to run initializers and finalizers. */
312 #undef STARTFILE_SPEC
313 #if TARGET_HPUX_11_31
314 #define STARTFILE_SPEC \
315 "%{!shared: %{!symbolic: crt0%O%s} \
316 %{munix=95:unix95.o%s} %{munix=98:unix98.o%s} \
317 %{!munix=93:%{!munix=95:%{!munix=98:unix2003%O%s}}}} \
318 %{static:crtbeginT%O%s} \
319 %{!static:%{!shared:crtbegin%O%s} %{shared:crtbeginS%O%s}}"
320 #elif TARGET_HPUX_11_11
321 #define STARTFILE_SPEC \
322 "%{!shared: %{!symbolic: crt0%O%s} %{munix=95:unix95.o%s} \
323 %{!munix=93:%{!munix=95:unix98%O%s}}} %{static:crtbeginT%O%s} \
324 %{!static:%{!shared:crtbegin%O%s} %{shared:crtbeginS%O%s}}"
325 #else
326 #define STARTFILE_SPEC \
327 "%{!shared: %{!symbolic: crt0%O%s} %{munix=95:unix95%O%s}} \
328 %{static:crtbeginT%O%s} %{!static:%{!shared:crtbegin%O%s} \
329 %{shared:crtbeginS%O%s}}"
330 #endif
331
332 /* The libgcc_stub.a and milli.a libraries must come last. We need
333 to link with these libraries whenever start files are needed. */
334 #undef ENDFILE_SPEC
335 #define ENDFILE_SPEC \
336 "%{!shared:crtend%O%s libgcc_stub.a%s} %{shared:crtendS%O%s} milli.a%s"
337
338 /* Since HP uses the .init and .fini sections for array initializers
339 and finalizers, we need different defines for INIT_SECTION_ASM_OP
340 and FINI_SECTION_ASM_OP. With the implementation adopted below,
341 the sections are not actually used. However, we still must provide
342 defines to select the proper code path. */
343 #undef INIT_SECTION_ASM_OP
344 #define INIT_SECTION_ASM_OP ""
345 #undef FINI_SECTION_ASM_OP
346 #define FINI_SECTION_ASM_OP ""
347
348 /* We are using array initializers and don't want calls in the INIT
349 and FINI sections. */
350 #undef CRT_CALL_STATIC_FUNCTION
351 #define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC)
352
353 /* The init_priority attribute is not supported with HP ld. This could be
354 supported if collect2 was used with LD_INIT_SWITCH. Unfortunately, this
355 approach doesn't work with GNU ld since HP-UX doesn't support DT_INIT,
356 and therefore the -init and -fini GNU ld switches. */
357 #undef SUPPORTS_INIT_PRIORITY
358 #define SUPPORTS_INIT_PRIORITY (TARGET_GNU_LD ? 1 : 0)
359
360 /* If using HP ld do not call pxdb. Use size as a program that does nothing
361 and returns 0. /bin/true cannot be used because it is a script without
362 an interpreter. */
363 #define INIT_ENVIRONMENT "LD_PXDB=/usr/ccs/bin/size"
364
365 /* The HPUX dynamic linker objects to undefined weak symbols, so do
366 not use them in gthr-posix.h. */
367 #define GTHREAD_USE_WEAK 0
368
369 /* Support attribute weak. However, the GNU linker only resolves weak
370 references if they appear in a shared library. Thus, it is impossible
371 to create a static executable containing weak symbols. This is a problem
372 for the various crt files in libgcc. We don't want undefined weak
373 references to __register_frame_info, __deregister_frame_info and
374 __cxa_finalize introduced by crtbegin.o. So, we provide an archive
375 library of empty stub functions to resolve these symbols. */
376 #define TARGET_ATTRIBUTE_WEAK