]> git.ipfire.org Git - thirdparty/gcc.git/blame - gcc/config/alpha/osf5.h
netbsd.h (ENABLE_EXECUTE_STACK): Remove.
[thirdparty/gcc.git] / gcc / config / alpha / osf5.h
CommitLineData
8c200350
RO
1/* Definitions of target machine for GNU compiler, for DEC Alpha on
2 Tru64 UNIX V5.1.
3 Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 2000, 2001,
2feb95f7 4 2002, 2003, 2004, 2005, 2006, 2007, 2009, 2010, 2011
8c200350
RO
5 Free Software Foundation, Inc.
6 Contributed by Richard Kenner (kenner@vlsi1.ultra.nyu.edu)
5495cc55 7
8c200350 8This file is part of GCC.
5495cc55 9
8c200350
RO
10GCC is free software; you can redistribute it and/or modify
11it under the terms of the GNU General Public License as published by
12the Free Software Foundation; either version 3, or (at your option)
13any later version.
5495cc55 14
8c200350
RO
15GCC is distributed in the hope that it will be useful,
16but WITHOUT ANY WARRANTY; without even the implied warranty of
17MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18GNU General Public License for more details.
5495cc55 19
8c200350 20You should have received a copy of the GNU General Public License
2f83c7d6
NC
21along with GCC; see the file COPYING3. If not see
22<http://www.gnu.org/licenses/>. */
5495cc55 23
8c200350
RO
24/* As of DEC OSF/1 V4.0, as can subtract adjacent labels. */
25
26#undef TARGET_AS_CAN_SUBTRACT_LABELS
27#define TARGET_AS_CAN_SUBTRACT_LABELS 1
28
29/* The GEM libraries for X_float are present, though not used by C. */
30
31#undef TARGET_HAS_XFLOATING_LIBS
32#define TARGET_HAS_XFLOATING_LIBS 1
33
34/* Tru64 UNIX V5.1 uses IEEE QUAD format. */
0f15adbd 35#undef TARGET_DEFAULT
8bea7f7c 36#define TARGET_DEFAULT (MASK_FPREGS | MASK_LONG_DOUBLE_128)
5076b0ea 37
8c200350
RO
38/* The linker appears to perform invalid code optimizations that result
39 in the ldgp emitted for the exception_receiver pattern being incorrectly
40 linked. */
41#undef TARGET_LD_BUGGY_LDGP
42#define TARGET_LD_BUGGY_LDGP 1
43
44/* Tru64 UNIX V5.1 has the float and long double forms of math functions. */
45#undef TARGET_C99_FUNCTIONS
46#define TARGET_C99_FUNCTIONS 1
47
48/* Names to predefine in the preprocessor for this target machine. */
49
50#define TARGET_OS_CPP_BUILTINS() \
51 do { \
52 builtin_define_std ("unix"); \
53 builtin_define_std ("SYSTYPE_BSD"); \
54 builtin_define ("_SYSTYPE_BSD"); \
55 builtin_define ("__osf__"); \
56 builtin_define ("__digital__"); \
57 builtin_define ("__arch64__"); \
58 builtin_define ("_LONGLONG"); \
59 builtin_assert ("system=unix"); \
60 builtin_assert ("system=xpg4"); \
61 /* Tru64 UNIX V5 has a 16 byte long \
62 double type and requires __X_FLOAT \
63 to be defined for <math.h>. */ \
64 if (LONG_DOUBLE_TYPE_SIZE == 128) \
65 builtin_define ("__X_FLOAT"); \
66 \
67 /* Tru64 UNIX V4/V5 provide several ISO C94 \
68 features protected by the corresponding \
69 __STDC_VERSION__ macro. libstdc++ v3 \
70 needs them as well. */ \
71 if (c_dialect_cxx ()) \
72 builtin_define ("__STDC_VERSION__=199409L"); \
73 } while (0)
74
75/* Accept DEC C flags for multithreaded programs. We use _PTHREAD_USE_D4
76 instead of PTHREAD_USE_D4 since both have the same effect and the former
77 doesn't invade the users' namespace. */
78
79#undef CPP_SPEC
80#define CPP_SPEC \
81"%{pthread|threads:-D_REENTRANT} %{threads:-D_PTHREAD_USE_D4}"
82
83/* Under DEC OSF/1 V4, -p and -pg require -lprof1, and -lprof1 requires
84 -lpdf. */
85
86#define LIB_SPEC \
1890bccc 87"%{p|pg:-lprof1%{pthread|threads:_r} -lpdf} \
8c200350
RO
88 %{threads: -lpthreads} %{pthread|threads: -lpthread -lmach -lexc} -lc"
89
90/* Pass "-G 8" to ld because Alpha's CC does. Pass -O3 if we are
91 optimizing, -O1 if we are not. Pass -S to silence `weak symbol
92 multiply defined' warnings. Pass -shared, -non_shared or
93 -call_shared as appropriate. Pass -hidden_symbol so that our
94 constructor and call-frame data structures are not accidentally
95 overridden. */
96#define LINK_SPEC \
97 "-G 8 %{O*:-O3} %{!O*:-O1} -S %{static:-non_shared} \
98 %{!static:%{shared:-shared -hidden_symbol _GLOBAL_*} \
99 %{!shared:-call_shared}} %{pg} %{taso} %{rpath*}"
100
101#define STARTFILE_SPEC \
102 "%{!shared:%{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}}}"
103
104#define ENDFILE_SPEC \
0691dde9 105 "%{Ofast|ffast-math|funsafe-math-optimizations:crtfastmath.o%s}"
8c200350
RO
106
107#define MD_STARTFILE_PREFIX "/usr/lib/cmplrs/cc/"
108
5076b0ea
RO
109/* In Tru64 UNIX V5.1, Compaq introduced a new assembler
110 (/usr/lib/cmplrs/cc/adu) which currently (versions between 3.04.29 and
111 3.04.32) breaks mips-tfile. Passing the undocumented -oldas flag reverts
112 to using the old assembler (/usr/lib/cmplrs/cc/as[01]).
113
5076b0ea
RO
114 It is clearly not desirable to depend on this undocumented flag, and
115 Compaq wants -oldas to go away soon, but until they have released a
ad5ef673
RH
116 new adu that works with mips-tfile, this is the only option.
117
118 In some versions of the DTK, the assembler driver invokes ld after
119 assembly. This has been fixed in current versions, but adding -c
120 works as expected for all versions. */
5076b0ea 121
ad5ef673 122#define ASM_OLDAS_SPEC "-oldas -c"
ccb83cbc 123
8c200350
RO
124/* In OSF/1 v3.2c, the assembler by default does not output file names which
125 causes mips-tfile to fail. Passing -g to the assembler fixes this problem.
126 ??? Strictly speaking, we need -g only if the user specifies -g. Passing
127 it always means that we get slightly larger than necessary object files
128 if the user does not specify -g. If we don't pass -g, then mips-tfile
129 will need to be fixed to work in this case. Pass -O0 since some
95b53b57 130 optimization are broken and don't help us anyway. */
8c200350 131#if ((TARGET_DEFAULT | TARGET_CPU_DEFAULT) & MASK_GAS) != 0
95b53b57 132#define ASM_SPEC "%{malpha-as:-g " ASM_OLDAS_SPEC " %{pg} -O0}"
8c200350 133#else
95b53b57 134#define ASM_SPEC "%{!mgas:-g " ASM_OLDAS_SPEC " %{pg} -O0}"
8c200350 135#endif
46512942 136
8c200350
RO
137/* Specify to run a post-processor, mips-tfile after the assembler
138 has run to stuff the ecoff debug information into the object file.
139 This is needed because the Alpha assembler provides no way
140 of specifying such information in the assembly file. */
141
142#if ((TARGET_DEFAULT | TARGET_CPU_DEFAULT) & MASK_GAS) != 0
143
144#define ASM_FINAL_SPEC "\
145%{malpha-as: %{!mno-mips-tfile: \
146 \n mips-tfile %{v*: -v} \
147 %{K: -I %b.o~} \
148 %{!K: %{save-temps: -I %b.o~}} \
149 %{c:%W{o*}%{!o*:-o %b.o}}%{!c:-o %U.o} \
150 %{,assembler:%i;:%g.s}}}"
151
152#else
153#define ASM_FINAL_SPEC "\
154%{!mgas: %{!mno-mips-tfile: \
155 \n mips-tfile %{v*: -v} \
156 %{K: -I %b.o~} \
157 %{!K: %{save-temps: -I %b.o~}} \
158 %{c:%W{o*}%{!o*:-o %b.o}}%{!c:-o %U.o} \
159 %{,assembler:%i;:%g.s}}}"
160
161#endif
162
163/* Indicate that we have a stamp.h to use. */
164#ifndef CROSS_DIRECTORY_STRUCTURE
165#define HAVE_STAMP_H 1
166#endif
167
10e48e39 168#define HAVE_ENABLE_EXECUTE_STACK
8c200350
RO
169
170/* Digital UNIX V4.0E (1091)/usr/include/sys/types.h 4.3.49.9 1997/08/14 */
171#define SIZE_TYPE "long unsigned int"
172#define PTRDIFF_TYPE "long int"
173
174#define SIG_ATOMIC_TYPE "int"
175
176#define INT8_TYPE "signed char"
177#define INT16_TYPE "short int"
178#define INT32_TYPE "int"
179#define INT64_TYPE "long int"
180#define UINT8_TYPE "unsigned char"
181#define UINT16_TYPE "short unsigned int"
182#define UINT32_TYPE "unsigned int"
183#define UINT64_TYPE "long unsigned int"
184
185#define INT_LEAST8_TYPE "signed char"
186#define INT_LEAST16_TYPE "short int"
187#define INT_LEAST32_TYPE "int"
188#define INT_LEAST64_TYPE "long int"
189#define UINT_LEAST8_TYPE "unsigned char"
190#define UINT_LEAST16_TYPE "short unsigned int"
191#define UINT_LEAST32_TYPE "unsigned int"
192#define UINT_LEAST64_TYPE "long unsigned int"
193
194#define INT_FAST8_TYPE "signed char"
195#define INT_FAST16_TYPE "int"
196#define INT_FAST32_TYPE "int"
197#define INT_FAST64_TYPE "long int"
198#define UINT_FAST8_TYPE "unsigned char"
199#define UINT_FAST16_TYPE "unsigned int"
200#define UINT_FAST32_TYPE "unsigned int"
201#define UINT_FAST64_TYPE "long unsigned int"
202
203#define INTPTR_TYPE "long int"
204#define UINTPTR_TYPE "long unsigned int"
205
206/* The linker will stick __main into the .init section. */
207#define HAS_INIT_SECTION
208#define LD_INIT_SWITCH "-init"
209#define LD_FINI_SWITCH "-fini"
210
2feb95f7
RO
211/* From Tru64 UNIX Object File and Symbol Table Format Specification,
212 2.3.5 Alignment, p.19. */
213#define MAX_OFILE_ALIGNMENT (64 * 1024 * BITS_PER_UNIT)
214
8c200350
RO
215/* Select a format to encode pointers in exception handling data. CODE
216 is 0 for data, 1 for code labels, 2 for function pointers. GLOBAL is
217 true if the symbol may be affected by dynamic relocations.
218
219 We really ought to be using the SREL32 relocations that ECOFF has,
220 but no version of the native assembler supports creating such things,
221 and Compaq has no plans to rectify this. Worse, the dynamic loader
222 cannot handle unaligned relocations, so we have to make sure that
223 things get padded appropriately. */
224#define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) \
225 (TARGET_GAS \
226 ? (((GLOBAL) ? DW_EH_PE_indirect : 0) | DW_EH_PE_pcrel | DW_EH_PE_sdata4) \
227 : DW_EH_PE_aligned)
228
902a51a1
RO
229/* The Tru64 UNIX assembler warns on .lcomm with SIZE 0, so use 1 in that
230 case. */
231#undef ASM_OUTPUT_LOCAL
232#define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE,ROUNDED) \
233( fputs ("\t.lcomm ", (FILE)), \
234 assemble_name ((FILE), (NAME)), \
235 fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED"\n", (SIZE) ? (SIZE) : 1))
236
8c200350
RO
237/* This is how we tell the assembler that a symbol is weak. */
238
239#define ASM_OUTPUT_WEAK_ALIAS(FILE, NAME, VALUE) \
240 do \
241 { \
242 (*targetm.asm_out.globalize_label) (FILE, NAME); \
243 fputs ("\t.weakext\t", FILE); \
244 assemble_name (FILE, NAME); \
245 if (VALUE) \
246 { \
247 fputc (' ', FILE); \
248 assemble_name (FILE, VALUE); \
249 } \
250 fputc ('\n', FILE); \
251 } \
252 while (0)
253
254#define ASM_WEAKEN_LABEL(FILE, NAME) ASM_OUTPUT_WEAK_ALIAS(FILE, NAME, 0)
46512942 255
fb8cbd3c
RS
256/* The native assembler doesn't understand parenthesis. */
257#define TARGET_ASM_OPEN_PAREN ""
258#define TARGET_ASM_CLOSE_PAREN ""
259
8c200350
RO
260/* Handle #pragma extern_prefix. */
261#define TARGET_HANDLE_PRAGMA_EXTERN_PREFIX 1