1 /* Definitions of target machine GNU compiler. IA-64 version.
2 Copyright (C) 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
3 Contributed by Steve Ellcey <sje@cup.hp.com> and
4 Reva Cuthbertson <reva@cup.hp.com>
6 This file is part of GNU CC.
8 GNU CC 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 2, or (at your option)
13 GNU CC 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.
18 You should have received a copy of the GNU General Public License
19 along with GNU CC; see the file COPYING. If not, write to
20 the Free Software Foundation, 59 Temple Place - Suite 330,
21 Boston, MA 02111-1307, USA. */
23 /* This macro is a C statement to print on `stderr' a string describing the
24 particular machine description choice. */
26 #define TARGET_VERSION fprintf (stderr, " (IA-64) HP-UX");
28 /* Target OS builtins. */
29 /* -D__fpreg=long double is needed to compensate for
30 the lack of __fpreg which is a primative type in
31 HP C but does not exist in GNU C. */
32 #define TARGET_OS_CPP_BUILTINS() \
34 builtin_assert("system=hpux"); \
35 builtin_assert("system=posix"); \
36 builtin_assert("system=unix"); \
37 builtin_define_std("hpux"); \
38 builtin_define_std("unix"); \
39 builtin_define("__IA64__"); \
40 builtin_define("_LONGLONG"); \
41 builtin_define("_UINT128_T"); \
42 builtin_define("__fpreg=long double"); \
43 builtin_define("__float80=long double"); \
44 builtin_define("__float128=long double"); \
45 if (c_language == clk_cplusplus || !flag_iso) \
47 builtin_define("_HPUX_SOURCE"); \
48 builtin_define("__STDC_EXT__"); \
53 #define ASM_EXTRA_SPEC "%{milp32:-milp32} %{mlp64:-mlp64}"
59 #define STARTFILE_SPEC "%{!shared:crt0%O%s}"
61 #define STARTFILE_SPEC "/usr/ccs/lib/hpux64/crt0%O"
66 +Accept TypeMismatch \
71 %{rdynamic:-export-dynamic}} \
75 #define LIB_SPEC "%{!shared:%{!symbolic:-lc}}"
77 #undef SUBTARGET_SWITCHES
78 #define SUBTARGET_SWITCHES \
79 { "ilp32", MASK_ILP32, "Generate ILP32 code" }, \
80 { "lp64", -MASK_ILP32, "Generate LP64 code" },
82 /* A C expression whose value is zero if pointers that need to be extended
83 from being `POINTER_SIZE' bits wide to `Pmode' are sign-extended and
84 greater then zero if they are zero-extended and less then zero if the
85 ptr_extend instruction should be used. */
87 #define POINTERS_EXTEND_UNSIGNED -1
89 #define JMP_BUF_SIZE (8 * 76)
91 #undef READONLY_DATA_SECTION_ASM_OP
92 #define READONLY_DATA_SECTION_ASM_OP \
93 "\t.section\t.rodata,\t\"a\",\t\"progbits\""
95 #undef BITS_BIG_ENDIAN
96 #define BITS_BIG_ENDIAN 1
99 #define TARGET_DEFAULT (MASK_DWARF2_ASM | MASK_BIG_ENDIAN)
101 /* This needs to be set to force structure arguments with a single
102 field to be treated as structures and not as the type of their
103 field. Without this a structure with a single char will be
104 returned just like a char variable and that is wrong on HP-UX
105 IA64. TARGET_STRUCT_ARG_REG_LITTLE_ENDIAN triggers the special
106 structure handling, this macro simply ensures that single field
107 structures are always treated like structures. */
109 #define MEMBER_TYPE_FORCES_BLK(FIELD, MODE) 1
111 /* Override the setting of FUNCTION_ARG_REG_LITTLE_ENDIAN in
112 defaults.h. Setting this to true means that we are not passing
113 structures in registers in the "normal" big-endian way. See
114 See section 8.5 of the "Itanium Software Conventions and Runtime
115 Architecture", specifically Table 8-1 and the explanation of Byte 0
116 alignment and LSB alignment and a description of how structures
119 #define FUNCTION_ARG_REG_LITTLE_ENDIAN 1
121 #undef FUNCTION_ARG_PADDING
122 #define FUNCTION_ARG_PADDING(MODE, TYPE) \
123 ia64_hpux_function_arg_padding ((MODE), (TYPE))
125 #undef PAD_VARARGS_DOWN
126 #define PAD_VARARGS_DOWN (!AGGREGATE_TYPE_P (type))
128 #define REGISTER_TARGET_PRAGMAS(PFILE) \
129 cpp_register_pragma (PFILE, 0, "builtin", ia64_hpux_handle_builtin_pragma)
131 /* Tell ia64.c that we are using the HP linker and we should delay output of
132 function extern declarations so that we don't output them for functions
133 which are never used (and may not be defined). */
135 #undef TARGET_HPUX_LD
136 #define TARGET_HPUX_LD 1
138 /* Put out the needed function declarations at the end. */
140 #define ASM_FILE_END(STREAM) ia64_hpux_asm_file_end(STREAM)