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[pf3gnuchains/gcc-fork.git] / gcc / config / darwin.h
1 /* Target definitions for Darwin (Mac OS X) systems.
2    Copyright (C) 1989, 1990, 1991, 1992, 1993, 2000, 2001, 2002, 2003, 2004,
3    2005
4    Free Software Foundation, Inc.
5    Contributed by Apple Computer Inc.
6
7 This file is part of GCC.
8
9 GCC is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2, or (at your option)
12 any later version.
13
14 GCC is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17 GNU General Public License for more details.
18
19 You should have received a copy of the GNU General Public License
20 along with GCC; see the file COPYING.  If not, write to
21 the Free Software Foundation, 59 Temple Place - Suite 330,
22 Boston, MA 02111-1307, USA.  */
23
24 #ifndef CONFIG_DARWIN_H
25 #define CONFIG_DARWIN_H
26
27 /* The definitions in this file are common to all processor types
28    running Darwin, which is the kernel for Mac OS X.  Darwin is
29    basically a BSD user layer laid over a Mach kernel, then evolved
30    for many years (at NeXT) in parallel with other Unix systems.  So
31    while the runtime is a somewhat idiosyncratic Mach-based thing,
32    other definitions look like they would for a BSD variant.  */
33
34 /* Although NeXT ran on many different architectures, as of Jan 2001
35    the only supported Darwin targets are PowerPC and x86.  */
36
37 /* One of Darwin's NeXT legacies is the Mach-O format, which is partly
38    like a.out and partly like COFF, with additional features like
39    multi-architecture binary support.  */
40
41 #define OBJECT_FORMAT_MACHO
42
43 /* Suppress g++ attempt to link in the math library automatically. */
44 #define MATH_LIBRARY ""
45
46 /* We have atexit.  */
47
48 #define HAVE_ATEXIT
49
50 /* Define an empty body for the function do_global_dtors() in libgcc2.c.  */
51
52 #define DO_GLOBAL_DTORS_BODY
53
54 /* The string value for __SIZE_TYPE__.  */
55
56 #ifndef SIZE_TYPE
57 #define SIZE_TYPE "long unsigned int"
58 #endif
59
60 /* Type used for ptrdiff_t, as a string used in a declaration.  */
61
62 #undef  PTRDIFF_TYPE
63 #define PTRDIFF_TYPE "int"
64
65 /* wchar_t is int.  */
66
67 #undef  WCHAR_TYPE
68 #define WCHAR_TYPE "int"
69 #undef  WCHAR_TYPE_SIZE
70 #define WCHAR_TYPE_SIZE 32
71
72 /* Default to using the NeXT-style runtime, since that's what is
73    pre-installed on Darwin systems.  */
74
75 #define NEXT_OBJC_RUNTIME
76
77 /* Don't default to pcc-struct-return, because gcc is the only compiler, and
78    we want to retain compatibility with older gcc versions.  */
79
80 #undef  DEFAULT_PCC_STRUCT_RETURN
81 #define DEFAULT_PCC_STRUCT_RETURN 0
82
83 /* This table intercepts weirdo options whose names would interfere
84    with normal driver conventions, and either translates them into
85    standardly-named options, or adds a 'Z' so that they can get to
86    specs processing without interference.
87
88    Do not expand a linker option to "-Xlinker -<option>", since that
89    forfeits the ability to control via spec strings later.  However,
90    as a special exception, do this translation with -filelist, because
91    otherwise the driver will think there are no input files and quit.
92    (The alternative would be to hack the driver to recognize -filelist
93    specially, but it's simpler to use the translation table.)
94
95    Note that an option name with a prefix that matches another option
96    name, that also takes an argument, needs to be modified so the
97    prefix is different, otherwise a '*' after the shorter option will
98    match with the longer one.
99    
100    The SUBTARGET_OPTION_TRANSLATE_TABLE macro, which _must_ be defined
101    in gcc/config/{i386,rs6000}/darwin.h, should contain any additional
102    command-line option translations specific to the particular target
103    architecture.  */
104    
105 #define TARGET_OPTION_TRANSLATE_TABLE \
106   { "-all_load", "-Zall_load" },  \
107   { "-allowable_client", "-Zallowable_client" },  \
108   { "-arch_errors_fatal", "-Zarch_errors_fatal" },  \
109   { "-bind_at_load", "-Zbind_at_load" },  \
110   { "-bundle", "-Zbundle" },  \
111   { "-bundle_loader", "-Zbundle_loader" },  \
112   { "-weak_reference_mismatches", "-Zweak_reference_mismatches" },  \
113   { "-dead_strip", "-Zdead_strip" }, \
114   { "-no_dead_strip_inits_and_terms", "-Zno_dead_strip_inits_and_terms" }, \
115   { "-dependency-file", "-MF" }, \
116   { "-dylib_file", "-Zdylib_file" }, \
117   { "-dynamic", "-Zdynamic" },  \
118   { "-dynamiclib", "-Zdynamiclib" },  \
119   { "-exported_symbols_list", "-Zexported_symbols_list" },  \
120   { "-gfull", "-g -fno-eliminate-unused-debug-symbols" }, \
121   { "-gused", "-g -feliminate-unused-debug-symbols" }, \
122   { "-segaddr", "-Zsegaddr" }, \
123   { "-segs_read_only_addr", "-Zsegs_read_only_addr" }, \
124   { "-segs_read_write_addr", "-Zsegs_read_write_addr" }, \
125   { "-seg_addr_table", "-Zseg_addr_table" }, \
126   { "-seg_addr_table_filename", "-Zseg_addr_table_filename" }, \
127   { "-filelist", "-Xlinker -filelist -Xlinker" },  \
128   { "-framework", "-Xlinker -framework -Xlinker" },  \
129   { "-flat_namespace", "-Zflat_namespace" },  \
130   { "-force_cpusubtype_ALL", "-Zforce_cpusubtype_ALL" },  \
131   { "-force_flat_namespace", "-Zforce_flat_namespace" },  \
132   { "-image_base", "-Zimage_base" },  \
133   { "-init", "-Zinit" },  \
134   { "-install_name", "-Zinstall_name" },  \
135   { "-multiply_defined_unused", "-Zmultiplydefinedunused" },  \
136   { "-multiply_defined", "-Zmultiply_defined" },  \
137   { "-multi_module", "-Zmulti_module" },  \
138   { "-static", "-static -Wa,-static" },  \
139   { "-single_module", "-Zsingle_module" },  \
140   { "-unexported_symbols_list", "-Zunexported_symbols_list" }, \
141   SUBTARGET_OPTION_TRANSLATE_TABLE
142
143 /* These compiler options take n arguments.  */
144
145 #undef  WORD_SWITCH_TAKES_ARG
146 #define WORD_SWITCH_TAKES_ARG(STR)              \
147   (DEFAULT_WORD_SWITCH_TAKES_ARG (STR) ? 1 :    \
148    !strcmp (STR, "Zallowable_client") ? 1 :     \
149    !strcmp (STR, "arch") ? 1 :                  \
150    !strcmp (STR, "arch_only") ? 1 :             \
151    !strcmp (STR, "Zbundle_loader") ? 1 :        \
152    !strcmp (STR, "client_name") ? 1 :           \
153    !strcmp (STR, "compatibility_version") ? 1 : \
154    !strcmp (STR, "current_version") ? 1 :       \
155    !strcmp (STR, "Zdylib_file") ? 1 :           \
156    !strcmp (STR, "Zexported_symbols_list") ? 1 : \
157    !strcmp (STR, "Zimage_base") ? 1 :           \
158    !strcmp (STR, "Zinit") ? 1 :                 \
159    !strcmp (STR, "Zinstall_name") ? 1 :         \
160    !strcmp (STR, "Zmultiplydefinedunused") ? 1 : \
161    !strcmp (STR, "Zmultiply_defined") ? 1 :     \
162    !strcmp (STR, "precomp-trustfile") ? 1 :     \
163    !strcmp (STR, "read_only_relocs") ? 1 :      \
164    !strcmp (STR, "sectcreate") ? 3 :            \
165    !strcmp (STR, "sectorder") ? 3 :             \
166    !strcmp (STR, "Zsegaddr") ? 2 :              \
167    !strcmp (STR, "Zsegs_read_only_addr") ? 1 :  \
168    !strcmp (STR, "Zsegs_read_write_addr") ? 1 : \
169    !strcmp (STR, "Zseg_addr_table") ? 1 :       \
170    !strcmp (STR, "Zseg_addr_table_filename") ?1 :\
171    !strcmp (STR, "seg1addr") ? 1 :              \
172    !strcmp (STR, "segprot") ? 3 :               \
173    !strcmp (STR, "sub_library") ? 1 :           \
174    !strcmp (STR, "sub_umbrella") ? 1 :          \
175    !strcmp (STR, "umbrella") ? 1 :              \
176    !strcmp (STR, "undefined") ? 1 :             \
177    !strcmp (STR, "Zunexported_symbols_list") ? 1 : \
178    !strcmp (STR, "Zweak_reference_mismatches") ? 1 : \
179    !strcmp (STR, "pagezero_size") ? 1 :         \
180    !strcmp (STR, "segs_read_only_addr") ? 1 :   \
181    !strcmp (STR, "segs_read_write_addr") ? 1 :  \
182    !strcmp (STR, "sectalign") ? 3 :             \
183    !strcmp (STR, "sectobjectsymbols") ? 2 :     \
184    !strcmp (STR, "segcreate") ? 3 :             \
185    !strcmp (STR, "dylinker_install_name") ? 1 : \
186    0)
187
188 /* Machine dependent cpp options.  __APPLE_CC__ is defined as the
189    Apple include files expect it to be defined and won't work if it
190    isn't.  */
191
192 #undef  CPP_SPEC
193 #define CPP_SPEC "%{static:%{!dynamic:-D__STATIC__}}%{!static:-D__DYNAMIC__}\
194     -D__APPLE_CC__=1"
195
196 /* This is mostly a clone of the standard LINK_COMMAND_SPEC, plus
197    precomp, libtool, and fat build additions.  Also we
198    don't specify a second %G after %L because libSystem is
199    self-contained and doesn't need to link against libgcc.a.  */
200 /* In general, random Darwin linker flags should go into LINK_SPEC
201    instead of LINK_COMMAND_SPEC.  The command spec is better for
202    specifying the handling of options understood by generic Unix
203    linkers, and for positional arguments like libraries.  */
204 #define LINK_COMMAND_SPEC "\
205 %{!fdump=*:%{!fsyntax-only:%{!precomp:%{!c:%{!M:%{!MM:%{!E:%{!S:\
206     %{!Zdynamiclib:%(linker)}%{Zdynamiclib:/usr/bin/libtool} \
207     %l %X %{d} %{s} %{t} %{Z} \
208     %{!Zdynamiclib:%{A} %{e*} %{m} %{N} %{n} %{r} %{u*} %{x} %{z}} \
209     %{@:-o %f%u.out}%{!@:%{o*}%{!o:-o a.out}} \
210     %{!Zdynamiclib:%{!A:%{!nostdlib:%{!nostartfiles:%S}}}} \
211     %{L*} %(link_libgcc) %o %{fprofile-arcs|fprofile-generate|coverage:-lgcov} \
212     %{!nostdlib:%{!nodefaultlibs:%G %L}} \
213     %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} %{F*} }}}}}}}}"
214
215 /* Please keep the random linker options in alphabetical order (modulo
216    'Z' and 'no' prefixes).  Options that can only go to one of libtool
217    or ld must be listed twice, under both !Zdynamiclib and
218    Zdynamiclib, with one of the cases reporting an error.  */
219 /* Note that options taking arguments may appear multiple times on a
220    command line with different arguments each time, so put a * after
221    their names so all of them get passed.  */
222 #define LINK_SPEC  \
223   "%{static}%{!static:-dynamic} \
224    %{fgnu-runtime:%:replace-outfile(-lobjc -lobjc-gnu)}\
225    %{!Zdynamiclib: \
226      %{Zforce_cpusubtype_ALL:-arch %(darwin_arch) -force_cpusubtype_ALL} \
227      %{!Zforce_cpusubtype_ALL:-arch %(darwin_subarch)} \
228      %{Zbundle:-bundle} \
229      %{Zbundle_loader*:-bundle_loader %*} \
230      %{client_name*} \
231      %{compatibility_version*:%e-compatibility_version only allowed with -dynamiclib\
232 } \
233      %{current_version*:%e-current_version only allowed with -dynamiclib} \
234      %{Zforce_flat_namespace:-force_flat_namespace} \
235      %{Zinstall_name*:%e-install_name only allowed with -dynamiclib} \
236      %{keep_private_externs} \
237      %{private_bundle} \
238     } \
239    %{Zdynamiclib: \
240      %{Zbundle:%e-bundle not allowed with -dynamiclib} \
241      %{Zbundle_loader*:%e-bundle_loader not allowed with -dynamiclib} \
242      %{client_name*:%e-client_name not allowed with -dynamiclib} \
243      %{compatibility_version*} \
244      %{current_version*} \
245      %{Zforce_cpusubtype_ALL:-arch_only %(darwin_arch)} \
246      %{!Zforce_cpusubtype_ALL: -arch_only %(darwin_subarch)} \
247      %{Zforce_flat_namespace:%e-force_flat_namespace not allowed with -dynamiclib} \
248      %{Zinstall_name*:-install_name %*} \
249      %{keep_private_externs:%e-keep_private_externs not allowed with -dynamiclib} \
250      %{private_bundle:%e-private_bundle not allowed with -dynamiclib} \
251     } \
252    %{Zall_load:-all_load}%{Zdynamiclib:%{!Zall_load:-noall_load}} \
253    %{Zallowable_client*:-allowable_client %*} \
254    %{Zbind_at_load:-bind_at_load} \
255    %{Zarch_errors_fatal:-arch_errors_fatal} \
256    %{Zdead_strip:-dead_strip} \
257    %{Zno_dead_strip_inits_and_terms:-no_dead_strip_inits_and_terms} \
258    %{Zdylib_file*:-dylib_file %*} \
259    %{Zdynamic:-dynamic}\
260    %{Zexported_symbols_list*:-exported_symbols_list %*} \
261    %{Zflat_namespace:-flat_namespace} \
262    %{headerpad_max_install_names*} \
263    %{Zimage_base*:-image_base %*} \
264    %{Zinit*:-init %*} \
265    %{nomultidefs} \
266    %{Zmulti_module:-multi_module} %{Zsingle_module:-single_module} \
267    %{Zmultiply_defined*:-multiply_defined %*} \
268    %{Zmultiplydefinedunused*:-multiply_defined_unused %*} \
269    %{prebind} %{noprebind} %{nofixprebinding} %{prebind_all_twolevel_modules} \
270    %{read_only_relocs} \
271    %{sectcreate*} %{sectorder*} %{seg1addr*} %{segprot*} \
272    %{Zsegaddr*:-segaddr %*} \
273    %{Zsegs_read_only_addr*:-segs_read_only_addr %*} \
274    %{Zsegs_read_write_addr*:-segs_read_write_addr %*} \
275    %{Zseg_addr_table*: -seg_addr_table %*} \
276    %{Zseg_addr_table_filename*:-seg_addr_table_filename %*} \
277    %{sub_library*} %{sub_umbrella*} \
278    %{twolevel_namespace} %{twolevel_namespace_hints} \
279    %{umbrella*} \
280    %{undefined*} \
281    %{Zunexported_symbols_list*:-unexported_symbols_list %*} \
282    %{Zweak_reference_mismatches*:-weak_reference_mismatches %*} \
283    %{!Zweak_reference_mismatches*:-weak_reference_mismatches non-weak} \
284    %{X} \
285    %{y*} \
286    %{w} \
287    %{pagezero_size*} %{segs_read_*} %{seglinkedit} %{noseglinkedit}  \
288    %{sectalign*} %{sectobjectsymbols*} %{segcreate*} %{whyload} \
289    %{whatsloaded} %{dylinker_install_name*} \
290    %{dylinker} %{Mach} "
291
292
293 /* Machine dependent libraries but do not redefine it if we already on 7.0 and
294    above as it needs to link with libmx also.  */
295
296 #ifndef LIB_SPEC
297 #define LIB_SPEC "%{!static:-lSystem}"
298 #endif
299
300 /* -dynamiclib implies -shared-libgcc just like -shared would on linux.  */
301 #define REAL_LIBGCC_SPEC \
302    "%{static|static-libgcc:-lgcc -lgcc_eh}\
303     %{!static:%{!static-libgcc:\
304       %{!Zdynamiclib:%{!shared-libgcc:-lgcc -lgcc_eh}\
305       %{shared-libgcc:-lgcc_s -lgcc}} %{Zdynamiclib:-lgcc_s -lgcc}}}"
306
307 /* We specify crt0.o as -lcrt0.o so that ld will search the library path.  */
308 /* We don't want anything to do with crt2.o in the 64-bit case;
309    testing the PowerPC-specific -m64 flag here is a little irregular,
310    but it's overkill to make copies of this spec for each target
311    arch.  */
312
313 #undef  STARTFILE_SPEC
314 #define STARTFILE_SPEC  \
315   "%{!Zdynamiclib:%{Zbundle:%{!static:-lbundle1.o}} \
316      %{!Zbundle:%{pg:%{static:-lgcrt0.o} \
317                      %{!static:%{object:-lgcrt0.o} \
318                                %{!object:%{preload:-lgcrt0.o} \
319                                  %{!preload:-lgcrt1.o %{!m64: crt2.o%s}}}}} \
320                 %{!pg:%{static:-lcrt0.o} \
321                       %{!static:%{object:-lcrt0.o} \
322                                 %{!object:%{preload:-lcrt0.o} \
323                                   %{!preload:-lcrt1.o %{!m64: crt2.o%s}}}}}}}"
324
325 /* The native Darwin linker doesn't necessarily place files in the order
326    that they're specified on the link line.  Thus, it is pointless
327    to put anything in ENDFILE_SPEC.  */
328 /* #define ENDFILE_SPEC "" */
329
330 /* Default Darwin ASM_SPEC, very simple.  */
331 #define ASM_SPEC "-arch %(darwin_arch) \
332   %{Zforce_cpusubtype_ALL:-force_cpusubtype_ALL}"
333
334 /* We use Dbx symbol format.  */
335
336 #define DBX_DEBUGGING_INFO 1
337
338 /* Also enable Dwarf 2 as an option.  */
339 #define DWARF2_DEBUGGING_INFO
340 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
341
342 #define DEBUG_FRAME_SECTION   "__DWARFA,__debug_frame,coalesced,no_toc+strip_static_syms"
343 #define DEBUG_INFO_SECTION    "__DWARFA,__debug_info"
344 #define DEBUG_ABBREV_SECTION  "__DWARFA,__debug_abbrev"
345 #define DEBUG_ARANGES_SECTION "__DWARFA,__debug_aranges"
346 #define DEBUG_MACINFO_SECTION "__DWARFA,__debug_macinfo"
347 #define DEBUG_LINE_SECTION    "__DWARFA,__debug_line"
348 #define DEBUG_LOC_SECTION     "__DWARFA,__debug_loc"
349 #define DEBUG_PUBNAMES_SECTION        "__DWARFA,__debug_pubnames"
350 #define DEBUG_STR_SECTION     "__DWARFA,__debug_str"
351 #define DEBUG_RANGES_SECTION  "__DWARFA,__debug_ranges"
352
353 /* When generating stabs debugging, use N_BINCL entries.  */
354
355 #define DBX_USE_BINCL
356
357 /* There is no limit to the length of stabs strings.  */
358
359 #define DBX_CONTIN_LENGTH 0
360
361 /* gdb needs a null N_SO at the end of each file for scattered loading.  */
362
363 #define DBX_OUTPUT_NULL_N_SO_AT_MAIN_SOURCE_FILE_END
364
365 /* GCC's definition of 'one_only' is the same as its definition of 'weak'.  */
366 #define MAKE_DECL_ONE_ONLY(DECL) (DECL_WEAK (DECL) = 1)
367
368 /* Mach-O supports 'weak imports', and 'weak definitions' in coalesced
369    sections.  machopic_select_section ensures that weak variables go in
370    coalesced sections.  Weak aliases (or any other kind of aliases) are
371    not supported.  Weak symbols that aren't visible outside the .s file
372    are not supported.  */
373 #define ASM_WEAKEN_DECL(FILE, DECL, NAME, ALIAS)                        \
374   do {                                                                  \
375     if (ALIAS)                                                          \
376       {                                                                 \
377         warning (0, "alias definitions not supported in Mach-O; ignored");      \
378         break;                                                          \
379       }                                                                 \
380                                                                         \
381     if (! DECL_EXTERNAL (DECL) && TREE_PUBLIC (DECL))                   \
382       targetm.asm_out.globalize_label (FILE, NAME);                     \
383     if (DECL_EXTERNAL (DECL))                                           \
384       fputs ("\t.weak_reference ", FILE);                               \
385     else if (! lookup_attribute ("weak", DECL_ATTRIBUTES (DECL))        \
386         && lookup_attribute ("weak_import", DECL_ATTRIBUTES (DECL)))    \
387       break;                                                            \
388     else if (TREE_PUBLIC (DECL))                                        \
389       fputs ("\t.weak_definition ", FILE);                              \
390     else                                                                \
391       break;                                                            \
392     assemble_name (FILE, NAME);                                         \
393     fputc ('\n', FILE);                                                 \
394   } while (0)
395
396 /* Darwin has the pthread routines in libSystem, which every program
397    links to, so there's no need for weak-ness for that.  */
398 #define GTHREAD_USE_WEAK 0
399
400 /* The Darwin linker imposes two limitations on common symbols: they 
401    can't have hidden visibility, and they can't appear in dylibs.  As
402    a consequence, we should never use common symbols to represent 
403    vague linkage. */
404 #undef USE_COMMON_FOR_ONE_ONLY
405 #define USE_COMMON_FOR_ONE_ONLY 0
406
407 /* The Darwin linker doesn't want coalesced symbols to appear in
408    a static archive's table of contents. */
409 #undef TARGET_WEAK_NOT_IN_ARCHIVE_TOC
410 #define TARGET_WEAK_NOT_IN_ARCHIVE_TOC 1
411
412 /* We make exception information linkonce. */
413 #undef TARGET_USES_WEAK_UNWIND_INFO
414 #define TARGET_USES_WEAK_UNWIND_INFO 1
415
416 /* We need to use a nonlocal label for the start of an EH frame: the
417    Darwin linker requires that a coalesced section start with a label. */
418 #undef FRAME_BEGIN_LABEL
419 #define FRAME_BEGIN_LABEL "EH_frame"
420
421 /* Emit a label for the FDE corresponding to DECL.  EMPTY means 
422    emit a label for an empty FDE. */
423 #define TARGET_ASM_EMIT_UNWIND_LABEL darwin_emit_unwind_label
424
425 /* Our profiling scheme doesn't LP labels and counter words.  */
426
427 #define NO_PROFILE_COUNTERS     1
428
429 #undef  INIT_SECTION_ASM_OP
430 #define INIT_SECTION_ASM_OP
431
432 #undef  INVOKE__main
433
434 #define TARGET_ASM_CONSTRUCTOR  machopic_asm_out_constructor
435 #define TARGET_ASM_DESTRUCTOR   machopic_asm_out_destructor
436
437 /* Always prefix with an underscore.  */
438
439 #define USER_LABEL_PREFIX "_"
440
441 /* Don't output a .file directive.  That is only used by the assembler for
442    error reporting.  */
443 #undef  TARGET_ASM_FILE_START_FILE_DIRECTIVE
444 #define TARGET_ASM_FILE_START_FILE_DIRECTIVE false
445
446 #undef  TARGET_ASM_FILE_END
447 #define TARGET_ASM_FILE_END darwin_file_end
448
449 #define ASM_OUTPUT_SKIP(FILE,SIZE)  \
450   fprintf (FILE, "\t.space "HOST_WIDE_INT_PRINT_UNSIGNED"\n", SIZE)
451
452 /* Give ObjC methods pretty symbol names.  */
453
454 #undef  OBJC_GEN_METHOD_LABEL
455 #define OBJC_GEN_METHOD_LABEL(BUF,IS_INST,CLASS_NAME,CAT_NAME,SEL_NAME,NUM) \
456   do { if (CAT_NAME)                                                    \
457          sprintf (BUF, "%c[%s(%s) %s]", (IS_INST) ? '-' : '+',          \
458                   (CLASS_NAME), (CAT_NAME), (SEL_NAME));                \
459        else                                                             \
460          sprintf (BUF, "%c[%s %s]", (IS_INST) ? '-' : '+',              \
461                   (CLASS_NAME), (SEL_NAME));                            \
462      } while (0)
463
464 /* The RTTI data (e.g., __ti4name) is common and public (and static),
465    but it does need to be referenced via indirect PIC data pointers.
466    The machopic_define_symbol calls are telling the machopic subsystem
467    that the name *is* defined in this module, so it doesn't need to
468    make them indirect.  */
469
470 #undef ASM_DECLARE_OBJECT_NAME
471 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL)                       \
472   do {                                                                  \
473     const char *xname = NAME;                                           \
474     if (GET_CODE (XEXP (DECL_RTL (DECL), 0)) != SYMBOL_REF)             \
475       xname = IDENTIFIER_POINTER (DECL_NAME (DECL));                    \
476     if (! DECL_WEAK (DECL)                                              \
477         && ((TREE_STATIC (DECL)                                         \
478              && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))           \
479             || DECL_INITIAL (DECL)))                                    \
480         machopic_define_symbol (DECL_RTL (DECL));                       \
481     if ((TREE_STATIC (DECL)                                             \
482          && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))               \
483         || DECL_INITIAL (DECL))                                         \
484       (* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false);   \
485     ASM_OUTPUT_LABEL (FILE, xname);                                     \
486     /* Darwin doesn't support zero-size objects, so give them a         \
487        byte.  */                                                        \
488     if (tree_low_cst (DECL_SIZE_UNIT (DECL), 1) == 0)                   \
489       assemble_zeros (1);                                               \
490   } while (0)
491
492 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL)                     \
493   do {                                                                  \
494     const char *xname = NAME;                                           \
495     if (GET_CODE (XEXP (DECL_RTL (DECL), 0)) != SYMBOL_REF)             \
496       xname = IDENTIFIER_POINTER (DECL_NAME (DECL));                    \
497     if (! DECL_WEAK (DECL)                                              \
498         && ((TREE_STATIC (DECL)                                         \
499              && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))           \
500             || DECL_INITIAL (DECL)))                                    \
501         machopic_define_symbol (DECL_RTL (DECL));                       \
502     if ((TREE_STATIC (DECL)                                             \
503          && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))               \
504         || DECL_INITIAL (DECL))                                         \
505       (* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false);   \
506     ASM_OUTPUT_LABEL (FILE, xname);                                     \
507   } while (0)
508
509 #define ASM_DECLARE_CONSTANT_NAME(FILE, NAME, EXP, SIZE)        \
510   do {                                                          \
511     ASM_OUTPUT_LABEL (FILE, NAME);                              \
512     /* Darwin doesn't support zero-size objects, so give them a \
513        byte.  */                                                \
514     if ((SIZE) == 0)                                            \
515       assemble_zeros (1);                                       \
516   } while (0)
517
518 /* Wrap new method names in quotes so the assembler doesn't gag.
519    Make Objective-C internal symbols local.  */
520
521 #undef  ASM_OUTPUT_LABELREF
522 #define ASM_OUTPUT_LABELREF(FILE,NAME)                                       \
523   do {                                                                       \
524        const char *xname = (NAME);                                           \
525        if (! strcmp (xname, "<pic base>"))                                   \
526          machopic_output_function_base_name(FILE);                           \
527        else if (xname[0] == '&' || xname[0] == '*')                          \
528          {                                                                   \
529            int len = strlen (xname);                                         \
530            if (len > 6 && !strcmp ("$stub", xname + len - 5))                \
531              machopic_validate_stub_or_non_lazy_ptr (xname);                 \
532            else if (len > 7 && !strcmp ("$stub\"", xname + len - 6))         \
533              machopic_validate_stub_or_non_lazy_ptr (xname);                 \
534            else if (len > 14 && !strcmp ("$non_lazy_ptr", xname + len - 13)) \
535              machopic_validate_stub_or_non_lazy_ptr (xname);                 \
536            if (xname[1] != '"' && name_needs_quotes (&xname[1]))             \
537              fprintf (FILE, "\"%s\"", &xname[1]);                            \
538            else                                                              \
539              fputs (&xname[1], FILE);                                        \
540          }                                                                   \
541        else if (xname[0] == '+' || xname[0] == '-')                          \
542          fprintf (FILE, "\"%s\"", xname);                                    \
543        else if (!strncmp (xname, "_OBJC_", 6))                               \
544          fprintf (FILE, "L%s", xname);                                       \
545        else if (!strncmp (xname, ".objc_class_name_", 17))                   \
546          fprintf (FILE, "%s", xname);                                        \
547        else if (xname[0] != '"' && name_needs_quotes (xname))                \
548          fprintf (FILE, "\"%s\"", xname);                                    \
549        else                                                                  \
550          asm_fprintf (FILE, "%U%s", xname);                                  \
551   } while (0)
552
553 /* Output before executable code.  */
554 #undef TEXT_SECTION_ASM_OP
555 #define TEXT_SECTION_ASM_OP "\t.text"
556
557 /* Output before writable data.  */
558
559 #undef DATA_SECTION_ASM_OP
560 #define DATA_SECTION_ASM_OP "\t.data"
561
562 #undef  ALIGN_ASM_OP
563 #define ALIGN_ASM_OP            ".align"
564
565 #undef  ASM_OUTPUT_ALIGN
566 #define ASM_OUTPUT_ALIGN(FILE,LOG)      \
567   if ((LOG) != 0)                       \
568     fprintf (FILE, "\t%s %d\n", ALIGN_ASM_OP, (LOG))
569
570 /* Ensure correct alignment of bss data.  */
571
572 #undef  ASM_OUTPUT_ALIGNED_DECL_LOCAL                                   
573 #define ASM_OUTPUT_ALIGNED_DECL_LOCAL(FILE, DECL, NAME, SIZE, ALIGN)    \
574   do {                                                                  \
575     unsigned HOST_WIDE_INT _new_size = SIZE;                            \
576     fputs (".lcomm ", (FILE));                                          \
577     assemble_name ((FILE), (NAME));                                     \
578     if (_new_size == 0) _new_size = 1;                                  \
579     fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED",%u\n", _new_size, \
580              floor_log2 ((ALIGN) / BITS_PER_UNIT));                     \
581     if ((DECL) && ((TREE_STATIC (DECL)                                  \
582          && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))               \
583         || DECL_INITIAL (DECL)))                                        \
584       {                                                                 \
585         (* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false); \
586         machopic_define_symbol (DECL_RTL (DECL));                       \
587       }                                                                 \
588   } while (0)
589
590 /* The maximum alignment which the object file format can support.
591    For Mach-O, this is 2^15.  */
592
593 #undef  MAX_OFILE_ALIGNMENT
594 #define MAX_OFILE_ALIGNMENT 0x8000
595
596 /* Create new Mach-O sections.  */
597
598 #undef  SECTION_FUNCTION
599 #define SECTION_FUNCTION(FUNCTION, SECTION, DIRECTIVE, OBJC)            \
600 extern void FUNCTION (void);                                            \
601 void                                                                    \
602 FUNCTION (void)                                                         \
603 {                                                                       \
604   if (in_section != SECTION)                                            \
605     {                                                                   \
606       if (OBJC)                                                         \
607         objc_section_init ();                                           \
608       if (asm_out_file)                                                 \
609         fputs ("\t" DIRECTIVE "\n", asm_out_file);                      \
610       in_section = SECTION;                                             \
611       if ((SECTION == in_text_coal)                                     \
612           || (SECTION == in_text_unlikely)                              \
613           || (SECTION == in_text_unlikely_coal))                        \
614         last_text_section = SECTION;                                    \
615     }                                                                   \
616 }                                                                       \
617
618 /* Darwin uses many types of special sections.  */
619
620 #undef  EXTRA_SECTIONS
621 #define EXTRA_SECTIONS                                                  \
622   in_text_coal, in_text_unlikely, in_text_unlikely_coal,                \
623   in_const, in_const_data, in_cstring, in_literal4, in_literal8,        \
624   in_const_coal, in_const_data_coal, in_data_coal,                      \
625   in_constructor, in_destructor, in_mod_init, in_mod_term,              \
626   in_objc_class, in_objc_meta_class, in_objc_category,                  \
627   in_objc_class_vars, in_objc_instance_vars,                            \
628   in_objc_cls_meth, in_objc_inst_meth,                                  \
629   in_objc_cat_cls_meth, in_objc_cat_inst_meth,                          \
630   in_objc_selector_refs,                                                \
631   in_objc_selector_fixup,                                               \
632   in_objc_symbols, in_objc_module_info,                                 \
633   in_objc_protocol, in_objc_string_object,                              \
634   in_objc_constant_string_object,                                       \
635   in_objc_image_info,                                                   \
636   in_objc_class_names, in_objc_meth_var_names,                          \
637   in_objc_meth_var_types, in_objc_cls_refs,                             \
638   in_machopic_nl_symbol_ptr,                                            \
639   in_machopic_lazy_symbol_ptr,                                          \
640   in_machopic_symbol_stub,                                              \
641   in_machopic_symbol_stub1,                                             \
642   in_machopic_picsymbol_stub,                                           \
643   in_machopic_picsymbol_stub1,                                          \
644   in_darwin_exception, in_darwin_eh_frame,                              \
645   num_sections
646
647 #undef  EXTRA_SECTION_FUNCTIONS
648 #define EXTRA_SECTION_FUNCTIONS                                 \
649 static void objc_section_init (void);                           \
650 SECTION_FUNCTION (text_coal_section,                            \
651                   in_text_coal,                                 \
652                   ".section __TEXT,__textcoal_nt,coalesced,"    \
653                     "pure_instructions", 0)                     \
654 SECTION_FUNCTION (text_unlikely_coal_section,                   \
655                   in_text_unlikely_coal,                        \
656                   ".section __TEXT,__text_unlikely_coal,"       \
657                     "coalesced,pure_instructions", 0)           \
658 SECTION_FUNCTION (const_section,                                \
659                   in_const,                                     \
660                   ".const", 0)                                  \
661 SECTION_FUNCTION (const_coal_section,                           \
662                   in_const_coal,                                \
663                   ".section __TEXT,__const_coal,coalesced", 0)  \
664 SECTION_FUNCTION (const_data_section,                           \
665                   in_const_data,                                \
666                   ".const_data", 0)                             \
667 SECTION_FUNCTION (const_data_coal_section,                      \
668                   in_const_data_coal,                           \
669                   ".section __DATA,__const_coal,coalesced", 0)  \
670 SECTION_FUNCTION (data_coal_section,                            \
671                   in_data_coal,                                 \
672                   ".section __DATA,__datacoal_nt,coalesced", 0) \
673 SECTION_FUNCTION (cstring_section,                              \
674                   in_cstring,                                   \
675                   ".cstring", 0)                                \
676 SECTION_FUNCTION (literal4_section,                             \
677                   in_literal4,                                  \
678                   ".literal4", 0)                               \
679 SECTION_FUNCTION (literal8_section,                             \
680                   in_literal8,                                  \
681                   ".literal8", 0)                               \
682 SECTION_FUNCTION (constructor_section,                          \
683                   in_constructor,                               \
684                   ".constructor", 0)                            \
685 SECTION_FUNCTION (mod_init_section,                             \
686                   in_mod_init,                                  \
687                   ".mod_init_func", 0)                          \
688 SECTION_FUNCTION (mod_term_section,                             \
689                   in_mod_term,                                  \
690                   ".mod_term_func", 0)                          \
691 SECTION_FUNCTION (destructor_section,                           \
692                   in_destructor,                                \
693                   ".destructor", 0)                             \
694 SECTION_FUNCTION (objc_class_section,                           \
695                   in_objc_class,                                \
696                   ".objc_class", 1)                             \
697 SECTION_FUNCTION (objc_meta_class_section,                      \
698                   in_objc_meta_class,                           \
699                   ".objc_meta_class", 1)                        \
700 SECTION_FUNCTION (objc_category_section,                        \
701                   in_objc_category,                             \
702                 ".objc_category", 1)                            \
703 SECTION_FUNCTION (objc_class_vars_section,                      \
704                   in_objc_class_vars,                           \
705                   ".objc_class_vars", 1)                        \
706 SECTION_FUNCTION (objc_instance_vars_section,                   \
707                   in_objc_instance_vars,                        \
708                   ".objc_instance_vars", 1)                     \
709 SECTION_FUNCTION (objc_cls_meth_section,                        \
710                   in_objc_cls_meth,                             \
711                   ".objc_cls_meth", 1)                          \
712 SECTION_FUNCTION (objc_inst_meth_section,                       \
713                   in_objc_inst_meth,                            \
714                   ".objc_inst_meth", 1)                         \
715 SECTION_FUNCTION (objc_cat_cls_meth_section,                    \
716                   in_objc_cat_cls_meth,                         \
717                   ".objc_cat_cls_meth", 1)                      \
718 SECTION_FUNCTION (objc_cat_inst_meth_section,                   \
719                   in_objc_cat_inst_meth,                        \
720                   ".objc_cat_inst_meth", 1)                     \
721 SECTION_FUNCTION (objc_selector_refs_section,                   \
722                   in_objc_selector_refs,                        \
723                   ".objc_message_refs", 1)                      \
724 SECTION_FUNCTION (objc_selector_fixup_section,                               \
725                   in_objc_selector_fixup,                                    \
726                   ".section __OBJC, __sel_fixup, regular, no_dead_strip", 1) \
727 SECTION_FUNCTION (objc_symbols_section,                                 \
728                   in_objc_symbols,                                      \
729                   ".objc_symbols", 1)                                   \
730 SECTION_FUNCTION (objc_module_info_section,                             \
731                   in_objc_module_info,                                  \
732                   ".objc_module_info", 1)                               \
733 SECTION_FUNCTION (objc_protocol_section,                                \
734                   in_objc_protocol,                                     \
735                   ".objc_protocol", 1)                                  \
736 SECTION_FUNCTION (objc_string_object_section,                           \
737                   in_objc_string_object,                                \
738                   ".objc_string_object", 1)                             \
739 SECTION_FUNCTION (objc_constant_string_object_section,                  \
740                   in_objc_constant_string_object,                       \
741                   ".section __OBJC, __cstring_object, regular, "        \
742                     "no_dead_strip", 1)                                 \
743 /* Fix-and-Continue image marker.  */                                   \
744 SECTION_FUNCTION (objc_image_info_section,                              \
745                   in_objc_image_info,                                   \
746                   ".section __OBJC, __image_info, regular, "            \
747                     "no_dead_strip", 1)                                 \
748 SECTION_FUNCTION (objc_class_names_section,                             \
749                 in_objc_class_names,                                    \
750                 ".objc_class_names", 1)                                 \
751 SECTION_FUNCTION (objc_meth_var_names_section,                          \
752                 in_objc_meth_var_names,                                 \
753                 ".objc_meth_var_names", 1)                              \
754 SECTION_FUNCTION (objc_meth_var_types_section,                          \
755                 in_objc_meth_var_types,                                 \
756                 ".objc_meth_var_types", 1)                              \
757 SECTION_FUNCTION (objc_cls_refs_section,                                \
758                 in_objc_cls_refs,                                       \
759                 ".objc_cls_refs", 1)                                    \
760 \
761 SECTION_FUNCTION (machopic_lazy_symbol_ptr_section,                     \
762                 in_machopic_lazy_symbol_ptr,                            \
763                 ".lazy_symbol_pointer", 0)                              \
764 SECTION_FUNCTION (machopic_nl_symbol_ptr_section,                       \
765                 in_machopic_nl_symbol_ptr,                              \
766                 ".non_lazy_symbol_pointer", 0)                          \
767 SECTION_FUNCTION (machopic_symbol_stub_section,                         \
768                 in_machopic_symbol_stub,                                \
769                 ".symbol_stub", 0)                                      \
770 SECTION_FUNCTION (machopic_symbol_stub1_section,                        \
771                 in_machopic_symbol_stub1,                               \
772                 ".section __TEXT,__symbol_stub1,symbol_stubs,"          \
773                   "pure_instructions,16", 0)                            \
774 SECTION_FUNCTION (machopic_picsymbol_stub_section,                      \
775                 in_machopic_picsymbol_stub,                             \
776                 ".picsymbol_stub", 0)                                   \
777 SECTION_FUNCTION (machopic_picsymbol_stub1_section,                     \
778                 in_machopic_picsymbol_stub1,                            \
779                 ".section __TEXT,__picsymbolstub1,symbol_stubs,"        \
780                   "pure_instructions,32", 0)                            \
781 SECTION_FUNCTION (darwin_exception_section,                             \
782                 in_darwin_exception,                                    \
783                 ".section __DATA,__gcc_except_tab", 0)                  \
784 SECTION_FUNCTION (darwin_eh_frame_section,                              \
785                 in_darwin_eh_frame,                                     \
786                 ".section " EH_FRAME_SECTION_NAME ",__eh_frame"         \
787                   EH_FRAME_SECTION_ATTR, 0)                             \
788 \
789 static void                                     \
790 objc_section_init (void)                        \
791 {                                               \
792   static int been_here = 0;                     \
793                                                 \
794   if (been_here == 0)                           \
795     {                                           \
796       been_here = 1;                            \
797           /* written, cold -> hot */            \
798       objc_cat_cls_meth_section ();             \
799       objc_cat_inst_meth_section ();            \
800       objc_string_object_section ();            \
801       objc_constant_string_object_section ();   \
802       objc_selector_refs_section ();            \
803       objc_selector_fixup_section ();           \
804       objc_cls_refs_section ();                 \
805       objc_class_section ();                    \
806       objc_meta_class_section ();               \
807           /* shared, hot -> cold */             \
808       objc_cls_meth_section ();                 \
809       objc_inst_meth_section ();                \
810       objc_protocol_section ();                 \
811       objc_class_names_section ();              \
812       objc_meth_var_types_section ();           \
813       objc_meth_var_names_section ();           \
814       objc_category_section ();                 \
815       objc_class_vars_section ();               \
816       objc_instance_vars_section ();            \
817       objc_module_info_section ();              \
818       objc_symbols_section ();                  \
819     }                                           \
820 }
821
822 #define READONLY_DATA_SECTION const_section
823
824 #undef  TARGET_ASM_SELECT_SECTION
825 #define TARGET_ASM_SELECT_SECTION machopic_select_section
826 #define USE_SELECT_SECTION_FOR_FUNCTIONS
827
828 #undef  TARGET_ASM_SELECT_RTX_SECTION
829 #define TARGET_ASM_SELECT_RTX_SECTION machopic_select_rtx_section
830 #undef  TARGET_ASM_UNIQUE_SECTION
831 #define TARGET_ASM_UNIQUE_SECTION darwin_unique_section
832 #undef  TARGET_ASM_FUNCTION_RODATA_SECTION
833 #define TARGET_ASM_FUNCTION_RODATA_SECTION default_no_function_rodata_section
834
835
836 #define ASM_DECLARE_UNRESOLVED_REFERENCE(FILE,NAME)                     \
837     do {                                                                \
838          if (FILE) {                                                    \
839            if (MACHOPIC_INDIRECT)                                       \
840              fprintf (FILE, "\t.lazy_reference ");                      \
841            else                                                         \
842              fprintf (FILE, "\t.reference ");                           \
843            assemble_name (FILE, NAME);                                  \
844            fprintf (FILE, "\n");                                        \
845          }                                                              \
846        } while (0)
847
848 #define ASM_DECLARE_CLASS_REFERENCE(FILE,NAME)                          \
849     do {                                                                \
850          if (FILE) {                                                    \
851            fprintf (FILE, "\t");                                        \
852            assemble_name (FILE, NAME);                                  \
853            fprintf (FILE, "=0\n");                                      \
854            (*targetm.asm_out.globalize_label) (FILE, NAME);             \
855          }                                                              \
856        } while (0)
857
858 /* Globalizing directive for a label.  */
859 #define GLOBAL_ASM_OP ".globl "
860 #define TARGET_ASM_GLOBALIZE_LABEL darwin_globalize_label
861
862 /* Emit an assembler directive to set visibility for a symbol.  Used
863    to support visibility attribute and Darwin's private extern
864    feature.  */
865 #undef TARGET_ASM_ASSEMBLE_VISIBILITY
866 #define TARGET_ASM_ASSEMBLE_VISIBILITY darwin_assemble_visibility
867
868 /* Extra attributes for Darwin.  */
869 #define SUBTARGET_ATTRIBUTE_TABLE                                            \
870   /* { name, min_len, max_len, decl_req, type_req, fn_type_req, handler } */ \
871   { "weak_import", 0, 0, true, false, false,                                 \
872     darwin_handle_weak_import_attribute }
873
874 #undef ASM_GENERATE_INTERNAL_LABEL
875 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM)   \
876   sprintf (LABEL, "*%s%ld", PREFIX, (long)(NUM))
877
878 #undef TARGET_ASM_MARK_DECL_PRESERVED
879 #define TARGET_ASM_MARK_DECL_PRESERVED darwin_mark_decl_preserved
880
881 /* Set on a symbol with SYMBOL_FLAG_FUNCTION or
882    MACHO_SYMBOL_FLAG_VARIABLE to indicate that the function or
883    variable has been defined in this translation unit.  */
884
885 #define MACHO_SYMBOL_FLAG_VARIABLE (SYMBOL_FLAG_MACH_DEP)
886 #define MACHO_SYMBOL_FLAG_DEFINED ((SYMBOL_FLAG_MACH_DEP) << 1)
887
888 /* Set on a symbol to indicate when fix-and-continue style code
889    generation is being used and the symbol refers to a static symbol
890    that should be rebound from new instances of a translation unit to
891    the original instance of the data.  */
892
893 #define MACHO_SYMBOL_STATIC ((SYMBOL_FLAG_MACH_DEP) << 2)
894
895 /* Symbolic names for various things we might know about a symbol.  */
896
897 enum machopic_addr_class {
898   MACHOPIC_UNDEFINED,
899   MACHOPIC_DEFINED_DATA,
900   MACHOPIC_UNDEFINED_DATA,
901   MACHOPIC_DEFINED_FUNCTION,
902   MACHOPIC_UNDEFINED_FUNCTION
903 };
904
905 /* Macros defining the various PIC cases.  */
906
907 #define MACHO_DYNAMIC_NO_PIC_P  (TARGET_DYNAMIC_NO_PIC)
908 #define MACHOPIC_INDIRECT       (flag_pic || MACHO_DYNAMIC_NO_PIC_P)
909 #define MACHOPIC_JUST_INDIRECT  (flag_pic == 1 || MACHO_DYNAMIC_NO_PIC_P)
910 #define MACHOPIC_PURE           (flag_pic == 2 && ! MACHO_DYNAMIC_NO_PIC_P)
911
912 #undef TARGET_ENCODE_SECTION_INFO
913 #define TARGET_ENCODE_SECTION_INFO  darwin_encode_section_info
914 #undef TARGET_STRIP_NAME_ENCODING
915 #define TARGET_STRIP_NAME_ENCODING  default_strip_name_encoding
916
917 #define GEN_BINDER_NAME_FOR_STUB(BUF,STUB,STUB_LENGTH)          \
918   do {                                                          \
919     const char *const stub_ = (STUB);                           \
920     char *buffer_ = (BUF);                                      \
921     strcpy (buffer_, stub_);                                    \
922     if (stub_[0] == '"')                                        \
923       {                                                         \
924         strcpy (buffer_ + (STUB_LENGTH) - 1, "_binder\"");      \
925       }                                                         \
926     else                                                        \
927       {                                                         \
928         strcpy (buffer_ + (STUB_LENGTH), "_binder");            \
929       }                                                         \
930   } while (0)
931
932 #define GEN_SYMBOL_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH)    \
933   do {                                                          \
934     const char *const symbol_ = (SYMBOL);                       \
935     char *buffer_ = (BUF);                                      \
936     if (name_needs_quotes (symbol_) && symbol_[0] != '"')       \
937       {                                                         \
938           sprintf (buffer_, "\"%s\"", symbol_);                 \
939       }                                                         \
940     else                                                        \
941       {                                                         \
942         strcpy (buffer_, symbol_);                              \
943       }                                                         \
944   } while (0)
945
946 /* Given a symbol name string, create the lazy pointer version
947    of the symbol name.  */
948
949 #define GEN_LAZY_PTR_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH)  \
950   do {                                                          \
951     const char *symbol_ = (SYMBOL);                             \
952     char *buffer_ = (BUF);                                      \
953     if (symbol_[0] == '"')                                      \
954       {                                                         \
955         strcpy (buffer_, "\"L");                                \
956         strcpy (buffer_ + 2, symbol_ + 1);                      \
957         strcpy (buffer_ + (SYMBOL_LENGTH), "$lazy_ptr\"");      \
958       }                                                         \
959     else if (name_needs_quotes (symbol_))                       \
960       {                                                         \
961         strcpy (buffer_, "\"L");                                \
962         strcpy (buffer_ + 2, symbol_);                          \
963         strcpy (buffer_ + (SYMBOL_LENGTH) + 2, "$lazy_ptr\"");  \
964       }                                                         \
965     else                                                        \
966       {                                                         \
967         strcpy (buffer_, "L");                                  \
968         strcpy (buffer_ + 1, symbol_);                          \
969         strcpy (buffer_ + (SYMBOL_LENGTH) + 1, "$lazy_ptr");    \
970       }                                                         \
971   } while (0)
972
973 #define TARGET_ASM_EXCEPTION_SECTION darwin_exception_section
974
975 #define TARGET_ASM_EH_FRAME_SECTION darwin_eh_frame_section
976
977 #define EH_FRAME_SECTION_NAME   "__TEXT"
978 #define EH_FRAME_SECTION_ATTR ",coalesced,no_toc+strip_static_syms+live_support"
979
980 /* Java runtime class list.  */
981 #define JCR_SECTION_NAME "__DATA,jcr,regular,no_dead_strip"
982
983 #undef ASM_PREFERRED_EH_DATA_FORMAT
984 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL)  \
985   (((CODE) == 2 && (GLOBAL) == 1) \
986    ? (DW_EH_PE_pcrel | DW_EH_PE_indirect | DW_EH_PE_sdata4) : \
987      ((CODE) == 1 || (GLOBAL) == 0) ? DW_EH_PE_pcrel : DW_EH_PE_absptr)
988
989 #define ASM_OUTPUT_DWARF_DELTA(FILE,SIZE,LABEL1,LABEL2)  \
990   darwin_asm_output_dwarf_delta (FILE, SIZE, LABEL1, LABEL2)
991
992 #define ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX(ASM_OUT_FILE, ENCODING, SIZE, ADDR, DONE)     \
993       if (ENCODING == ASM_PREFERRED_EH_DATA_FORMAT (2, 1)) {                            \
994         darwin_non_lazy_pcrel (ASM_OUT_FILE, ADDR);                                     \
995         goto DONE;                                                                      \
996       }
997
998 /* Experimentally, putting jump tables in text is faster on SPEC.
999    Also this is needed for correctness for coalesced functions.  */
1000
1001 #ifndef JUMP_TABLES_IN_TEXT_SECTION
1002 #define JUMP_TABLES_IN_TEXT_SECTION 1
1003 #endif
1004
1005 #define TARGET_TERMINATE_DW2_EH_FRAME_INFO false
1006
1007 #undef TARGET_ASM_NAMED_SECTION
1008 #define TARGET_ASM_NAMED_SECTION darwin_asm_named_section
1009
1010 #define DARWIN_REGISTER_TARGET_PRAGMAS()                        \
1011   do {                                                          \
1012     c_register_pragma (0, "mark", darwin_pragma_ignore);        \
1013     c_register_pragma (0, "options", darwin_pragma_options);    \
1014     c_register_pragma (0, "segment", darwin_pragma_ignore);     \
1015     c_register_pragma (0, "unused", darwin_pragma_unused);      \
1016   } while (0)
1017
1018 #undef ASM_APP_ON
1019 #define ASM_APP_ON ""
1020 #undef ASM_APP_OFF
1021 #define ASM_APP_OFF ""
1022
1023 void darwin_register_frameworks (const char *, const char *, int);
1024 void darwin_register_objc_includes (const char *, const char *, int);
1025 #define TARGET_EXTRA_PRE_INCLUDES darwin_register_objc_includes
1026 #define TARGET_EXTRA_INCLUDES darwin_register_frameworks
1027
1028 void add_framework_path (char *);
1029 #define TARGET_OPTF add_framework_path
1030
1031 #define TARGET_HAS_F_SETLKW
1032
1033 /* Darwin before 7.0 does not have C99 functions.   */
1034 #ifndef TARGET_C99_FUNCTIONS
1035 #define TARGET_C99_FUNCTIONS 0
1036 #endif
1037
1038 #define WINT_TYPE "int"
1039
1040 #endif /* CONFIG_DARWIN_H */