1 /* Definitions of target machine GNU compiler. IA-64 version.
2 Copyright (C) 1999-2023 Free Software Foundation, Inc.
3 Contributed by Steve Ellcey <sje@cup.hp.com> and
4 Reva Cuthbertson <reva@cup.hp.com>
5
6 This file is part of GCC.
7
8 GCC is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3, or (at your option)
11 any later version.
12
13 GCC is distributed in the hope that it will be useful,
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
19 along with GCC; see the file COPYING3. If not see
20 <http://www.gnu.org/licenses/>. */
21
22 /* Enable HPUX ABI quirks. */
23 #undef TARGET_HPUX
24 #define TARGET_HPUX 1
25
26 #undef WCHAR_TYPE
27 #define WCHAR_TYPE "unsigned int"
28
29 #undef WCHAR_TYPE_SIZE
30 #define WCHAR_TYPE_SIZE 32
31
32 /* Target OS builtins. */
33 #define TARGET_OS_CPP_BUILTINS() \
34 do { \
35 builtin_assert("system=hpux"); \
36 builtin_assert("system=posix"); \
37 builtin_assert("system=unix"); \
38 builtin_define_std("hpux"); \
39 builtin_define_std("unix"); \
40 builtin_define("__IA64__"); \
41 builtin_define("_LONGLONG"); \
42 builtin_define("_INCLUDE_LONGLONG"); \
43 builtin_define("__STDC_EXT__"); \
44 builtin_define("_UINT128_T"); \
45 if (c_dialect_cxx () || !flag_iso) \
46 { \
47 builtin_define("_HPUX_SOURCE"); \
48 builtin_define("__STDCPP__"); \
49 builtin_define("_INCLUDE__STDC_A1_SOURCE"); \
50 } \
51 if (TARGET_ILP32) \
52 builtin_define("_ILP32"); \
53 } while (0)
54
55 #undef CPP_SPEC
56 #define CPP_SPEC \
57 "%{mt|pthread:-D_REENTRANT -D_THREAD_SAFE -D_POSIX_C_SOURCE=199506L}"
58 /* aCC defines also -DRWSTD_MULTI_THREAD, -DRW_MULTI_THREAD. These
59 affect only aCC's C++ library (Rogue Wave-derived) which we do not
60 use, and they violate the user's name space. */
61
62 #undef ASM_EXTRA_SPEC
63 #define ASM_EXTRA_SPEC "%{milp32:-milp32} %{mlp64:-mlp64}"
64
65 #ifndef USE_GAS
66 #define AS_NEEDS_DASH_FOR_PIPED_INPUT
67 #endif
68
69 #ifndef CROSS_DIRECTORY_STRUCTURE
70 #undef MD_EXEC_PREFIX
71 #define MD_EXEC_PREFIX "/usr/ccs/bin/"
72
73 #undef MD_STARTFILE_PREFIX
74 #define MD_STARTFILE_PREFIX "/usr/ccs/lib/"
75 #endif
76
77 #undef ENDFILE_SPEC
78
79 #undef STARTFILE_SPEC
80 #define STARTFILE_SPEC "%{!shared:%{static:crt0%O%s} \
81 %{mlp64:/usr/lib/hpux64/unix98%O%s} \
82 %{!mlp64:/usr/lib/hpux32/unix98%O%s}}"
83
84 #undef LINK_SPEC
85 #define LINK_SPEC \
86 "-z +Accept TypeMismatch \
87 %{shared:-b} \
88 %{!shared: \
89 -u main \
90 %{static:-noshared}}"
91
92 #undef LIB_SPEC
93 #define LIB_SPEC \
94 "%{!shared: \
95 %{mt|pthread:%{fopenacc|fopenmp|%:gt(%{ftree-parallelize-loops=*:%*} 1):-lrt} -lpthread} \
96 %{p:%{!mlp64:-L/usr/lib/hpux32/libp} \
97 %{mlp64:-L/usr/lib/hpux64/libp} -lprof} \
98 %{pg:%{!mlp64:-L/usr/lib/hpux32/libp} \
99 %{mlp64:-L/usr/lib/hpux64/libp} -lgprof} \
100 %{!symbolic:-lc}}"
101
102 #define MULTILIB_DEFAULTS { "milp32" }
103
104 /* A C expression whose value is zero if pointers that need to be extended
105 from being `POINTER_SIZE' bits wide to `Pmode' are sign-extended and
106 greater then zero if they are zero-extended and less then zero if the
107 ptr_extend instruction should be used. */
108
109 #define POINTERS_EXTEND_UNSIGNED -1
110
111 #define JMP_BUF_SIZE (8 * 76)
112
113 #undef TARGET_DEFAULT
114 #define TARGET_DEFAULT \
115 (MASK_DWARF2_ASM | MASK_BIG_ENDIAN | MASK_ILP32)
116
117 /* ASM_OUTPUT_EXTERNAL_LIBCALL defaults to just a globalize_label call,
118 but that doesn't put out the @function type information which causes
119 shared library problems. */
120
121 #undef ASM_OUTPUT_EXTERNAL_LIBCALL
122 #define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN) \
123 do { \
124 (*targetm.asm_out.globalize_label) (FILE, XSTR (FUN, 0)); \
125 ASM_OUTPUT_TYPE_DIRECTIVE (FILE, XSTR (FUN, 0), "function"); \
126 } while (0)
127
128 #undef PAD_VARARGS_DOWN
129 #define PAD_VARARGS_DOWN (!AGGREGATE_TYPE_P (type))
130
131 #define REGISTER_TARGET_PRAGMAS() \
132 c_register_pragma (0, "builtin", ia64_hpux_handle_builtin_pragma)
133
134 /* Tell ia64.cc that we are using the HP linker and we should delay output of
135 function extern declarations so that we don't output them for functions
136 which are never used (and may not be defined). */
137
138 #undef TARGET_HPUX_LD
139 #define TARGET_HPUX_LD 1
140
141 /* The HPUX dynamic linker objects to weak symbols with no
142 definitions, so do not use them in gthr-posix.h. */
143 #define GTHREAD_USE_WEAK 0
144
145 #undef CTORS_SECTION_ASM_OP
146 #define CTORS_SECTION_ASM_OP "\t.section\t.init_array,\t\"aw\",\"init_array\""
147
148 #undef DTORS_SECTION_ASM_OP
149 #define DTORS_SECTION_ASM_OP "\t.section\t.fini_array,\t\"aw\",\"fini_array\""
150
151 /* The init_array/fini_array technique does not permit the use of
152 initialization priorities. */
153 #define SUPPORTS_INIT_PRIORITY 0
154
155 #undef READONLY_DATA_SECTION_ASM_OP
156 #define READONLY_DATA_SECTION_ASM_OP "\t.section\t.rodata,\t\"a\",\t\"progbits\""
157
158 #undef DATA_SECTION_ASM_OP
159 #define DATA_SECTION_ASM_OP "\t.section\t.data,\t\"aw\",\t\"progbits\""
160
161 #undef SDATA_SECTION_ASM_OP
162 #define SDATA_SECTION_ASM_OP "\t.section\t.sdata,\t\"asw\",\t\"progbits\""
163
164 #undef BSS_SECTION_ASM_OP
165 #define BSS_SECTION_ASM_OP "\t.section\t.bss,\t\"aw\",\t\"nobits\""
166
167 #undef SBSS_SECTION_ASM_OP
168 #define SBSS_SECTION_ASM_OP "\t.section\t.sbss,\t\"asw\",\t\"nobits\""
169
170 #undef TEXT_SECTION_ASM_OP
171 #define TEXT_SECTION_ASM_OP "\t.section\t.text,\t\"ax\",\t\"progbits\""
172
173 /* It is illegal to have relocations in shared segments on HPUX.
174 Pretend flag_pic is always set. */
175 #undef TARGET_ASM_RELOC_RW_MASK
176 #define TARGET_ASM_RELOC_RW_MASK ia64_hpux_reloc_rw_mask
177
178 /* ia64 HPUX has the float and long double forms of math functions.
179 We redefine this hook so the version from elfos.h header won't be used. */
180 #undef TARGET_LIBC_HAS_FUNCTION
181 #define TARGET_LIBC_HAS_FUNCTION default_libc_has_function
182
183 #undef TARGET_INIT_LIBFUNCS
184 #define TARGET_INIT_LIBFUNCS ia64_hpux_init_libfuncs
185
186 #define FLOAT_LIB_COMPARE_RETURNS_BOOL(MODE, COMPARISON) ((MODE) == TFmode)
187
188 /* HP-UX uses PROFILE_HOOK instead of FUNCTION_PROFILER but we need a
189 FUNCTION_PROFILER defined because its use is not ifdefed. When using
190 PROFILE_HOOK, the profile call comes after the prologue. */
191
192 #undef FUNCTION_PROFILER
193 #define FUNCTION_PROFILER(FILE, LABELNO) do { } while (0)
194
195 #undef PROFILE_HOOK
196 #define PROFILE_HOOK(LABEL) ia64_profile_hook (LABEL)
197
198 #undef PROFILE_BEFORE_PROLOGUE
199
200 #undef NO_PROFILE_COUNTERS
201 #define NO_PROFILE_COUNTERS 0
202
203 /* The HP-UX linker has a bug that causes calls from functions in
204 .text.unlikely to functions in .text to cause a segfault. Until
205 it is fixed, prevent code from being put into .text.unlikely or
206 .text.hot. */
207
208 #define TARGET_ASM_FUNCTION_SECTION ia64_hpux_function_section
209
210 #define TARGET_POSIX_IO
211
212 /* Define this to be nonzero if static stack checking is supported. */
213 #define STACK_CHECK_STATIC_BUILTIN 1
214
215 /* Minimum amount of stack required to recover from an anticipated stack
216 overflow detection. */
217 #define STACK_CHECK_PROTECT (24 * 1024)