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)