hpux.h revision 161651 
1/* Definitions of target machine GNU compiler.  IA-64 version.
2   Copyright (C) 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
3   Contributed by Steve Ellcey <sje@cup.hp.com> and
4                  Reva Cuthbertson <reva@cup.hp.com>
5
6This file is part of GCC.
7
8GCC is free software; you can redistribute it and/or modify
9it under the terms of the GNU General Public License as published by
10the Free Software Foundation; either version 2, or (at your option)
11any later version.
12
13GCC is distributed in the hope that it will be useful,
14but WITHOUT ANY WARRANTY; without even the implied warranty of
15MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16GNU General Public License for more details.
17
18You should have received a copy of the GNU General Public License
19along with GCC; see the file COPYING.  If not, write to
20the Free Software Foundation, 59 Temple Place - Suite 330,
21Boston, MA 02111-1307, USA.  */
22
23/* This macro is a C statement to print on `stderr' a string describing the
24   particular machine description choice.  */
25
26#define TARGET_VERSION fprintf (stderr, " (IA-64) HP-UX");
27
28/* Enable HPUX ABI quirks.  */
29#undef  TARGET_HPUX
30#define TARGET_HPUX 1
31
32/* Target OS builtins.  */
33#define TARGET_OS_CPP_BUILTINS()			\
34do {							\
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("_UINT128_T");			\
44	if (c_dialect_cxx () || !flag_iso)		\
45	  {						\
46	    builtin_define("_HPUX_SOURCE");		\
47	    builtin_define("__STDC_EXT__");		\
48	    builtin_define("__STDCPP__");		\
49	  }						\
50	if (TARGET_ILP32)				\
51	  builtin_define("_ILP32");			\
52} while (0)
53
54#undef CPP_SPEC
55#define CPP_SPEC \
56  "%{mt|pthread:-D_REENTRANT -D_THREAD_SAFE -D_POSIX_C_SOURCE=199506L}"
57/* aCC defines also -DRWSTD_MULTI_THREAD, -DRW_MULTI_THREAD.  These
58   affect only aCC's C++ library (Rogue Wave-derived) which we do not
59   use, and they violate the user's name space.  */
60
61#undef  ASM_EXTRA_SPEC
62#define ASM_EXTRA_SPEC "%{milp32:-milp32} %{mlp64:-mlp64}"
63
64#undef ENDFILE_SPEC
65
66#undef STARTFILE_SPEC
67#define STARTFILE_SPEC "%{!shared:%{static:crt0%O%s}}"
68
69#undef LINK_SPEC
70#define LINK_SPEC \
71  "+Accept TypeMismatch \
72   %{shared:-b} \
73   %{!shared: \
74     -u main \
75     %{static:-noshared}}"
76
77#undef  LIB_SPEC
78#define LIB_SPEC \
79  "%{!shared: \
80     %{mt|pthread:-lpthread} \
81     %{p:%{!mlp64:-L/usr/lib/hpux32/libp} \
82	 %{mlp64:-L/usr/lib/hpux64/libp} -lprof} \
83     %{pg:%{!mlp64:-L/usr/lib/hpux32/libp} \
84	  %{mlp64:-L/usr/lib/hpux64/libp} -lgprof} \
85     %{!symbolic:-lc}}"
86
87#undef SUBTARGET_SWITCHES
88#define SUBTARGET_SWITCHES \
89  { "ilp32",    MASK_ILP32,     "Generate ILP32 code" }, \
90  { "lp64",    -MASK_ILP32,     "Generate LP64 code" },
91
92#define MULTILIB_DEFAULTS { "milp32" }
93
94/* A C expression whose value is zero if pointers that need to be extended
95   from being `POINTER_SIZE' bits wide to `Pmode' are sign-extended and
96   greater then zero if they are zero-extended and less then zero if the
97   ptr_extend instruction should be used.  */
98
99#define POINTERS_EXTEND_UNSIGNED -1
100
101#define JMP_BUF_SIZE  (8 * 76)
102
103#undef TARGET_DEFAULT
104#define TARGET_DEFAULT (MASK_DWARF2_ASM | MASK_BIG_ENDIAN | MASK_ILP32)
105
106/* This needs to be set to force structure arguments with a single
107   integer field to be treated as structures and not as the type of
108   their field.  Without this a structure with a single char will be
109   returned just like a char variable, instead of being returned at the
110   top of the register as specified for big-endian IA64.  */
111
112#define MEMBER_TYPE_FORCES_BLK(FIELD, MODE) \
113  (!FLOAT_MODE_P (MODE) || (MODE) == TFmode)
114
115/* ASM_OUTPUT_EXTERNAL_LIBCALL defaults to just a globalize_label call,
116   but that doesn't put out the @function type information which causes
117   shared library problems.  */
118
119#undef ASM_OUTPUT_EXTERNAL_LIBCALL
120#define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN)			\
121do {								\
122  (*targetm.asm_out.globalize_label) (FILE, XSTR (FUN, 0));	\
123  ASM_OUTPUT_TYPE_DIRECTIVE (FILE, XSTR (FUN, 0), "function");	\
124} while (0)
125
126#undef FUNCTION_ARG_PADDING
127#define FUNCTION_ARG_PADDING(MODE, TYPE) \
128	ia64_hpux_function_arg_padding ((MODE), (TYPE))
129
130#undef PAD_VARARGS_DOWN
131#define PAD_VARARGS_DOWN (!AGGREGATE_TYPE_P (type))
132
133#define REGISTER_TARGET_PRAGMAS() \
134  c_register_pragma (0, "builtin", ia64_hpux_handle_builtin_pragma)
135
136/* Tell ia64.c that we are using the HP linker and we should delay output of
137   function extern declarations so that we don't output them for functions
138   which are never used (and may not be defined).  */
139
140#undef TARGET_HPUX_LD
141#define TARGET_HPUX_LD	1
142
143/* The HPUX dynamic linker objects to weak symbols with no
144   definitions, so do not use them in gthr-posix.h.  */
145#define GTHREAD_USE_WEAK 0
146
147/* Put out the needed function declarations at the end.  */
148
149#define TARGET_ASM_FILE_END ia64_hpux_file_end
150
151#undef CTORS_SECTION_ASM_OP
152#define CTORS_SECTION_ASM_OP  "\t.section\t.init_array,\t\"aw\",\"init_array\""
153
154#undef DTORS_SECTION_ASM_OP
155#define DTORS_SECTION_ASM_OP  "\t.section\t.fini_array,\t\"aw\",\"fini_array\""
156
157/* The init_array/fini_array technique does not permit the use of
158   initialization priorities.  */
159#define SUPPORTS_INIT_PRIORITY 0
160
161#undef READONLY_DATA_SECTION_ASM_OP
162#define READONLY_DATA_SECTION_ASM_OP "\t.section\t.rodata,\t\"a\",\t\"progbits\""
163
164#undef DATA_SECTION_ASM_OP
165#define DATA_SECTION_ASM_OP "\t.section\t.data,\t\"aw\",\t\"progbits\""
166
167#undef SDATA_SECTION_ASM_OP
168#define SDATA_SECTION_ASM_OP "\t.section\t.sdata,\t\"asw\",\t\"progbits\""
169
170#undef BSS_SECTION_ASM_OP
171#define BSS_SECTION_ASM_OP "\t.section\t.bss,\t\"aw\",\t\"nobits\""
172
173#undef SBSS_SECTION_ASM_OP
174#define SBSS_SECTION_ASM_OP "\t.section\t.sbss,\t\"asw\",\t\"nobits\""
175
176#undef TEXT_SECTION_ASM_OP
177#define TEXT_SECTION_ASM_OP "\t.section\t.text,\t\"ax\",\t\"progbits\""
178
179/* It is illegal to have relocations in shared segments on HPUX.
180   Pretend flag_pic is always set.  */
181#undef  TARGET_ASM_SELECT_SECTION
182#define TARGET_ASM_SELECT_SECTION  ia64_rwreloc_select_section
183#undef  TARGET_ASM_UNIQUE_SECTION
184#define TARGET_ASM_UNIQUE_SECTION  ia64_rwreloc_unique_section
185#undef  TARGET_ASM_SELECT_RTX_SECTION
186#define TARGET_ASM_SELECT_RTX_SECTION  ia64_rwreloc_select_rtx_section
187#undef  TARGET_SECTION_TYPE_FLAGS
188#define TARGET_SECTION_TYPE_FLAGS  ia64_rwreloc_section_type_flags
189
190/* ia64 HPUX has the float and long double forms of math functions.  */
191#undef TARGET_C99_FUNCTIONS
192#define TARGET_C99_FUNCTIONS  1
193
194#define TARGET_INIT_LIBFUNCS ia64_hpux_init_libfuncs
195
196#define FLOAT_LIB_COMPARE_RETURNS_BOOL(MODE, COMPARISON) ((MODE) == TFmode)
197