hpux.h revision 132718 
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#ifndef CROSS_COMPILE
88#undef LIBGCC_SPEC
89#define LIBGCC_SPEC \
90  "%{shared-libgcc:%{!mlp64:-lgcc_s}%{mlp64:-lgcc_s_hpux64} -lgcc} \
91   %{!shared-libgcc:-lgcc}"
92#endif
93
94#undef SUBTARGET_SWITCHES
95#define SUBTARGET_SWITCHES \
96  { "ilp32",    MASK_ILP32,     "Generate ILP32 code" }, \
97  { "lp64",    -MASK_ILP32,     "Generate LP64 code" },
98
99#define MULTILIB_DEFAULTS { "milp32" }
100
101/* A C expression whose value is zero if pointers that need to be extended
102   from being `POINTER_SIZE' bits wide to `Pmode' are sign-extended and
103   greater then zero if they are zero-extended and less then zero if the
104   ptr_extend instruction should be used.  */
105
106#define POINTERS_EXTEND_UNSIGNED -1
107
108#define JMP_BUF_SIZE  (8 * 76)
109
110#undef TARGET_DEFAULT
111#define TARGET_DEFAULT (MASK_DWARF2_ASM | MASK_BIG_ENDIAN | MASK_ILP32)
112
113/* This needs to be set to force structure arguments with a single
114   integer field to be treated as structures and not as the type of
115   their field.  Without this a structure with a single char will be
116   returned just like a char variable, instead of being returned at the
117   top of the register as specified for big-endian IA64.  */
118
119#define MEMBER_TYPE_FORCES_BLK(FIELD, MODE) \
120  (!FLOAT_MODE_P (MODE) || (MODE) == TFmode)
121
122/* ASM_OUTPUT_EXTERNAL_LIBCALL defaults to just a globalize_label call,
123   but that doesn't put out the @function type information which causes
124   shared library problems.  */
125
126#undef ASM_OUTPUT_EXTERNAL_LIBCALL
127#define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN)			\
128do {								\
129  (*targetm.asm_out.globalize_label) (FILE, XSTR (FUN, 0));	\
130  ASM_OUTPUT_TYPE_DIRECTIVE (FILE, XSTR (FUN, 0), "function");	\
131} while (0)
132
133#undef FUNCTION_ARG_PADDING
134#define FUNCTION_ARG_PADDING(MODE, TYPE) \
135	ia64_hpux_function_arg_padding ((MODE), (TYPE))
136
137#undef PAD_VARARGS_DOWN
138#define PAD_VARARGS_DOWN (!AGGREGATE_TYPE_P (type))
139
140#define REGISTER_TARGET_PRAGMAS() \
141  c_register_pragma (0, "builtin", ia64_hpux_handle_builtin_pragma)
142
143/* Tell ia64.c that we are using the HP linker and we should delay output of
144   function extern declarations so that we don't output them for functions
145   which are never used (and may not be defined).  */
146
147#undef TARGET_HPUX_LD
148#define TARGET_HPUX_LD	1
149
150/* The HPUX dynamic linker objects to weak symbols with no
151   definitions, so do not use them in gthr-posix.h.  */
152#define GTHREAD_USE_WEAK 0
153
154/* Put out the needed function declarations at the end.  */
155
156#define TARGET_ASM_FILE_END ia64_hpux_file_end
157
158#undef CTORS_SECTION_ASM_OP
159#define CTORS_SECTION_ASM_OP  "\t.section\t.init_array,\t\"aw\",\"init_array\""
160
161#undef DTORS_SECTION_ASM_OP
162#define DTORS_SECTION_ASM_OP  "\t.section\t.fini_array,\t\"aw\",\"fini_array\""
163
164/* The init_array/fini_array technique does not permit the use of
165   initialization priorities.  */
166#define SUPPORTS_INIT_PRIORITY 0
167
168#undef READONLY_DATA_SECTION_ASM_OP
169#define READONLY_DATA_SECTION_ASM_OP "\t.section\t.rodata,\t\"a\",\t\"progbits\""
170
171#undef DATA_SECTION_ASM_OP
172#define DATA_SECTION_ASM_OP "\t.section\t.data,\t\"aw\",\t\"progbits\""
173
174#undef SDATA_SECTION_ASM_OP
175#define SDATA_SECTION_ASM_OP "\t.section\t.sdata,\t\"asw\",\t\"progbits\""
176
177#undef BSS_SECTION_ASM_OP
178#define BSS_SECTION_ASM_OP "\t.section\t.bss,\t\"aw\",\t\"nobits\""
179
180#undef SBSS_SECTION_ASM_OP
181#define SBSS_SECTION_ASM_OP "\t.section\t.sbss,\t\"asw\",\t\"nobits\""
182
183#undef TEXT_SECTION_ASM_OP
184#define TEXT_SECTION_ASM_OP "\t.section\t.text,\t\"ax\",\t\"progbits\""
185
186/* It is illegal to have relocations in shared segments on HPUX.
187   Pretend flag_pic is always set.  */
188#undef  TARGET_ASM_SELECT_SECTION
189#define TARGET_ASM_SELECT_SECTION  ia64_rwreloc_select_section
190#undef  TARGET_ASM_UNIQUE_SECTION
191#define TARGET_ASM_UNIQUE_SECTION  ia64_rwreloc_unique_section
192#undef  TARGET_ASM_SELECT_RTX_SECTION
193#define TARGET_ASM_SELECT_RTX_SECTION  ia64_rwreloc_select_rtx_section
194#undef  TARGET_SECTION_TYPE_FLAGS
195#define TARGET_SECTION_TYPE_FLAGS  ia64_rwreloc_section_type_flags
196
197/* ia64 HPUX has the float and long double forms of math functions.  */
198#undef TARGET_C99_FUNCTIONS
199#define TARGET_C99_FUNCTIONS  1
200
201#define TARGET_INIT_LIBFUNCS ia64_hpux_init_libfuncs
202
203#define FLOAT_LIB_COMPARE_RETURNS_BOOL(MODE, COMPARISON) ((MODE) == TFmode)
204