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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [gcc/] [config/] [alpha/] [osf5.h] - Blame information for rev 709

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1 709 jeremybenn
/* 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,
4
   2002, 2003, 2004, 2005, 2006, 2007, 2009, 2010, 2011
5
   Free Software Foundation, Inc.
6
   Contributed by Richard Kenner (kenner@vlsi1.ultra.nyu.edu)
7
 
8
This file is part of GCC.
9
 
10
GCC is free software; you can redistribute it and/or modify
11
it under the terms of the GNU General Public License as published by
12
the Free Software Foundation; either version 3, or (at your option)
13
any later version.
14
 
15
GCC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
17
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18
GNU General Public License for more details.
19
 
20
You should have received a copy of the GNU General Public License
21
along with GCC; see the file COPYING3.  If not see
22
<http://www.gnu.org/licenses/>.  */
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24
/* As of DEC OSF/1 V4.0, as can subtract adjacent labels.  */
25
 
26
#undef TARGET_AS_CAN_SUBTRACT_LABELS
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#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
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#define TARGET_HAS_XFLOATING_LIBS 1
33
 
34
/* Tru64 UNIX V5.1 uses IEEE QUAD format.  */
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#undef TARGET_DEFAULT
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#define TARGET_DEFAULT  (MASK_FPREGS | MASK_LONG_DOUBLE_128)
37
 
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.  */
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#undef TARGET_LD_BUGGY_LDGP
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#define TARGET_LD_BUGGY_LDGP 1
43
 
44
/* Tru64 UNIX V5.1 has the float and long double forms of math functions.  */
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#undef TARGET_C99_FUNCTIONS
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#define TARGET_C99_FUNCTIONS  1
47
 
48
/* Names to predefine in the preprocessor for this target machine.  */
49
 
50
#define TARGET_OS_CPP_BUILTINS()                        \
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    do {                                                \
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        builtin_define_std ("unix");                    \
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        builtin_define_std ("SYSTYPE_BSD");             \
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        builtin_define ("_SYSTYPE_BSD");                \
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        builtin_define ("__osf__");                     \
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        builtin_define ("__digital__");                 \
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        builtin_define ("__arch64__");                  \
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        builtin_define ("_LONGLONG");                   \
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        builtin_assert ("system=unix");                 \
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        builtin_assert ("system=xpg4");                 \
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        /* Tru64 UNIX V5 has a 16 byte long             \
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           double type and requires __X_FLOAT           \
63
           to be defined for <math.h>.  */              \
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        if (LONG_DOUBLE_TYPE_SIZE == 128)               \
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          builtin_define ("__X_FLOAT");                 \
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                                                        \
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        /* Tru64 UNIX V4/V5 provide several ISO C94     \
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           features protected by the corresponding      \
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           __STDC_VERSION__ macro.  libstdc++ v3        \
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           needs them as well.  */                      \
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        if (c_dialect_cxx ())                           \
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          builtin_define ("__STDC_VERSION__=199409L");  \
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    } while (0)
74
 
75
/* Accept DEC C flags for multithreaded programs.  We use _PTHREAD_USE_D4
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   instead of PTHREAD_USE_D4 since both have the same effect and the former
77
   doesn't invade the users' namespace.  */
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79
#undef CPP_SPEC
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#define CPP_SPEC \
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"%{pthread|threads:-D_REENTRANT} %{threads:-D_PTHREAD_USE_D4}"
82
 
83
/* -mcpu=native handling only makes sense with compiler running on
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   an Alpha chip.  */
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#if defined(__alpha__) || defined(__alpha)
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extern const char *host_detect_local_cpu (int argc, const char **argv);
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# define EXTRA_SPEC_FUNCTIONS                                           \
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  { "local_cpu_detect", host_detect_local_cpu },
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# define MCPU_MTUNE_NATIVE_SPECS                                        \
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   " %{mcpu=native:%<mcpu=native %:local_cpu_detect(cpu)}"              \
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   " %{mtune=native:%<mtune=native %:local_cpu_detect(tune)}"
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#else
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# define MCPU_MTUNE_NATIVE_SPECS ""
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#endif
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#define DRIVER_SELF_SPECS MCPU_MTUNE_NATIVE_SPECS
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/* Under DEC OSF/1 V4, -p and -pg require -lprof1, and -lprof1 requires
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   -lpdf.  */
101
 
102
#define LIB_SPEC \
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"%{p|pg:-lprof1%{pthread|threads:_r} -lpdf} \
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 %{threads: -lpthreads} %{pthread|threads: -lpthread -lmach -lexc} -lc"
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106
/* Pass "-G 8" to ld because Alpha's CC does.  Pass -O3 if we are
107
   optimizing, -O1 if we are not.  Pass -S to silence `weak symbol
108
   multiply defined' warnings.  Pass -shared, -non_shared or
109
   -call_shared as appropriate.  Pass -hidden_symbol so that our
110
   constructor and call-frame data structures are not accidentally
111
   overridden.  */
112
#define LINK_SPEC  \
113
  "-G 8 %{O*:-O3} %{!O*:-O1} -S %{static:-non_shared} \
114
   %{!static:%{shared:-shared -hidden_symbol _GLOBAL_*} \
115
   %{!shared:-call_shared}} %{pg} %{taso} %{rpath*}"
116
 
117
#define STARTFILE_SPEC  \
118
  "%{!shared:%{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}}}"
119
 
120
#define ENDFILE_SPEC \
121
  "%{Ofast|ffast-math|funsafe-math-optimizations:crtfastmath.o%s}"
122
 
123
#define MD_STARTFILE_PREFIX "/usr/lib/cmplrs/cc/"
124
 
125
/* In Tru64 UNIX V5.1, Compaq introduced a new assembler
126
   (/usr/lib/cmplrs/cc/adu) which currently (versions between 3.04.29 and
127
   3.04.32) breaks mips-tfile.  Passing the undocumented -oldas flag reverts
128
   to using the old assembler (/usr/lib/cmplrs/cc/as[01]).
129
 
130
   It is clearly not desirable to depend on this undocumented flag, and
131
   Compaq wants -oldas to go away soon, but until they have released a
132
   new adu that works with mips-tfile, this is the only option.
133
 
134
   In some versions of the DTK, the assembler driver invokes ld after
135
   assembly.  This has been fixed in current versions, but adding -c
136
   works as expected for all versions.  */
137
 
138
#define ASM_OLDAS_SPEC "-oldas -c"
139
 
140
/* In OSF/1 v3.2c, the assembler by default does not output file names which
141
   causes mips-tfile to fail.  Passing -g to the assembler fixes this problem.
142
   ??? Strictly speaking, we need -g only if the user specifies -g.  Passing
143
   it always means that we get slightly larger than necessary object files
144
   if the user does not specify -g.  If we don't pass -g, then mips-tfile
145
   will need to be fixed to work in this case.  Pass -O0 since some
146
   optimization are broken and don't help us anyway.  */
147
#if ((TARGET_DEFAULT | TARGET_CPU_DEFAULT) & MASK_GAS) != 0
148
#define ASM_SPEC "%{malpha-as:-g " ASM_OLDAS_SPEC " %{pg} -O0}"
149
#else
150
#define ASM_SPEC "%{!mgas:-g " ASM_OLDAS_SPEC " %{pg} -O0}"
151
#endif
152
 
153
/* Specify to run a post-processor, mips-tfile after the assembler
154
   has run to stuff the ecoff debug information into the object file.
155
   This is needed because the Alpha assembler provides no way
156
   of specifying such information in the assembly file.  */
157
 
158
#if ((TARGET_DEFAULT | TARGET_CPU_DEFAULT) & MASK_GAS) != 0
159
 
160
#define ASM_FINAL_SPEC "\
161
%{malpha-as: %{!mno-mips-tfile: \
162
        \n mips-tfile %{v*: -v} \
163
                %{K: -I %b.o~} \
164
                %{!K: %{save-temps: -I %b.o~}} \
165
                %{c:%W{o*}%{!o*:-o %b.o}}%{!c:-o %U.o} \
166
                %{,assembler:%i;:%g.s}}}"
167
 
168
#else
169
#define ASM_FINAL_SPEC "\
170
%{!mgas: %{!mno-mips-tfile: \
171
        \n mips-tfile %{v*: -v} \
172
                %{K: -I %b.o~} \
173
                %{!K: %{save-temps: -I %b.o~}} \
174
                %{c:%W{o*}%{!o*:-o %b.o}}%{!c:-o %U.o} \
175
                %{,assembler:%i;:%g.s}}}"
176
 
177
#endif
178
 
179
/* Indicate that we have a stamp.h to use.  */
180
#ifndef CROSS_DIRECTORY_STRUCTURE
181
#define HAVE_STAMP_H 1
182
#endif
183
 
184
#define HAVE_ENABLE_EXECUTE_STACK
185
 
186
/* Digital UNIX V4.0E (1091)/usr/include/sys/types.h 4.3.49.9 1997/08/14 */
187
#define SIZE_TYPE       "long unsigned int"
188
#define PTRDIFF_TYPE    "long int"
189
 
190
#define SIG_ATOMIC_TYPE "int"
191
 
192
#define INT8_TYPE "signed char"
193
#define INT16_TYPE "short int"
194
#define INT32_TYPE "int"
195
#define INT64_TYPE "long int"
196
#define UINT8_TYPE "unsigned char"
197
#define UINT16_TYPE "short unsigned int"
198
#define UINT32_TYPE "unsigned int"
199
#define UINT64_TYPE "long unsigned int"
200
 
201
#define INT_LEAST8_TYPE "signed char"
202
#define INT_LEAST16_TYPE "short int"
203
#define INT_LEAST32_TYPE "int"
204
#define INT_LEAST64_TYPE "long int"
205
#define UINT_LEAST8_TYPE "unsigned char"
206
#define UINT_LEAST16_TYPE "short unsigned int"
207
#define UINT_LEAST32_TYPE "unsigned int"
208
#define UINT_LEAST64_TYPE "long unsigned int"
209
 
210
#define INT_FAST8_TYPE "signed char"
211
#define INT_FAST16_TYPE "int"
212
#define INT_FAST32_TYPE "int"
213
#define INT_FAST64_TYPE "long int"
214
#define UINT_FAST8_TYPE "unsigned char"
215
#define UINT_FAST16_TYPE "unsigned int"
216
#define UINT_FAST32_TYPE "unsigned int"
217
#define UINT_FAST64_TYPE "long unsigned int"
218
 
219
#define INTPTR_TYPE "long int"
220
#define UINTPTR_TYPE "long unsigned int"
221
 
222
/* The linker will stick __main into the .init section.  */
223
#define HAS_INIT_SECTION
224
#define LD_INIT_SWITCH "-init"
225
#define LD_FINI_SWITCH "-fini"
226
 
227
/* From Tru64 UNIX Object File and Symbol Table Format Specification,
228
   2.3.5 Alignment, p.19.  */
229
#define MAX_OFILE_ALIGNMENT (64 * 1024 * BITS_PER_UNIT)
230
 
231
/* Select a format to encode pointers in exception handling data.  CODE
232
   is 0 for data, 1 for code labels, 2 for function pointers.  GLOBAL is
233
   true if the symbol may be affected by dynamic relocations.
234
 
235
   We really ought to be using the SREL32 relocations that ECOFF has,
236
   but no version of the native assembler supports creating such things,
237
   and Compaq has no plans to rectify this.  Worse, the dynamic loader
238
   cannot handle unaligned relocations, so we have to make sure that
239
   things get padded appropriately.  */
240
#define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL)                            \
241
  (TARGET_GAS                                                                \
242
   ? (((GLOBAL) ? DW_EH_PE_indirect : 0) | DW_EH_PE_pcrel | DW_EH_PE_sdata4) \
243
   : DW_EH_PE_aligned)
244
 
245
/* The Tru64 UNIX assembler warns on .lcomm with SIZE 0, so use 1 in that
246
   case.  */
247
#undef ASM_OUTPUT_LOCAL
248
#define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE,ROUNDED)      \
249
( fputs ("\t.lcomm ", (FILE)),                          \
250
  assemble_name ((FILE), (NAME)),                       \
251
  fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED"\n", (SIZE) ? (SIZE) : 1))
252
 
253
/* This is how we tell the assembler that a symbol is weak.  */
254
 
255
#define ASM_OUTPUT_WEAK_ALIAS(FILE, NAME, VALUE)        \
256
  do                                                    \
257
    {                                                   \
258
      (*targetm.asm_out.globalize_label) (FILE, NAME);  \
259
      fputs ("\t.weakext\t", FILE);                     \
260
      assemble_name (FILE, NAME);                       \
261
      if (VALUE)                                        \
262
        {                                               \
263
          fputc (' ', FILE);                            \
264
          assemble_name (FILE, VALUE);                  \
265
        }                                               \
266
      fputc ('\n', FILE);                               \
267
    }                                                   \
268
  while (0)
269
 
270
#define ASM_WEAKEN_LABEL(FILE, NAME) ASM_OUTPUT_WEAK_ALIAS(FILE, NAME, 0)
271
 
272
/* The native assembler doesn't understand parenthesis.  */
273
#define TARGET_ASM_OPEN_PAREN ""
274
#define TARGET_ASM_CLOSE_PAREN ""
275
 
276
/* Handle #pragma extern_prefix.  */
277
#define TARGET_HANDLE_PRAGMA_EXTERN_PREFIX 1
278
 
279
#define TARGET_HAVE_NAMED_SECTIONS false

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