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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            fputs (&xname[1], FILE);                                          \
537          }                                                                   \
538        else if (xname[0] == '+' || xname[0] == '-')                          \
539          fprintf (FILE, "\"%s\"", xname);                                    \
540        else if (!strncmp (xname, "_OBJC_", 6))                               \
541          fprintf (FILE, "L%s", xname);                                       \
542        else if (!strncmp (xname, ".objc_class_name_", 17))                   \
543          fprintf (FILE, "%s", xname);                                        \
544        else                                                                  \
545          asm_fprintf (FILE, "%U%s", xname);                                  \
546   } while (0)
547
548 /* Output before executable code.  */
549 #undef TEXT_SECTION_ASM_OP
550 #define TEXT_SECTION_ASM_OP "\t.text"
551
552 /* Output before writable data.  */
553
554 #undef DATA_SECTION_ASM_OP
555 #define DATA_SECTION_ASM_OP "\t.data"
556
557 #undef  ALIGN_ASM_OP
558 #define ALIGN_ASM_OP            ".align"
559
560 #undef  ASM_OUTPUT_ALIGN
561 #define ASM_OUTPUT_ALIGN(FILE,LOG)      \
562   if ((LOG) != 0)                       \
563     fprintf (FILE, "\t%s %d\n", ALIGN_ASM_OP, (LOG))
564
565 /* Ensure correct alignment of bss data.  */
566
567 #undef  ASM_OUTPUT_ALIGNED_DECL_LOCAL                                   
568 #define ASM_OUTPUT_ALIGNED_DECL_LOCAL(FILE, DECL, NAME, SIZE, ALIGN)    \
569   do {                                                                  \
570     unsigned HOST_WIDE_INT _new_size = SIZE;                            \
571     fputs (".lcomm ", (FILE));                                          \
572     assemble_name ((FILE), (NAME));                                     \
573     if (_new_size == 0) _new_size = 1;                                  \
574     fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED",%u\n", _new_size, \
575              floor_log2 ((ALIGN) / BITS_PER_UNIT));                     \
576     if ((DECL) && ((TREE_STATIC (DECL)                                  \
577          && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))               \
578         || DECL_INITIAL (DECL)))                                        \
579       {                                                                 \
580         (* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false); \
581         machopic_define_symbol (DECL_RTL (DECL));                       \
582       }                                                                 \
583   } while (0)
584
585 /* The maximum alignment which the object file format can support.
586    For Mach-O, this is 2^15.  */
587
588 #undef  MAX_OFILE_ALIGNMENT
589 #define MAX_OFILE_ALIGNMENT 0x8000
590
591 /* Create new Mach-O sections.  */
592
593 #undef  SECTION_FUNCTION
594 #define SECTION_FUNCTION(FUNCTION, SECTION, DIRECTIVE, OBJC)            \
595 extern void FUNCTION (void);                                            \
596 void                                                                    \
597 FUNCTION (void)                                                         \
598 {                                                                       \
599   if (in_section != SECTION)                                            \
600     {                                                                   \
601       if (OBJC)                                                         \
602         objc_section_init ();                                           \
603       if (asm_out_file)                                                 \
604         fputs ("\t" DIRECTIVE "\n", asm_out_file);                      \
605       in_section = SECTION;                                             \
606       if ((SECTION == in_text_coal)                                     \
607           || (SECTION == in_text_unlikely)                              \
608           || (SECTION == in_text_unlikely_coal))                        \
609         last_text_section = SECTION;                                    \
610     }                                                                   \
611 }                                                                       \
612
613 /* Darwin uses many types of special sections.  */
614
615 #undef  EXTRA_SECTIONS
616 #define EXTRA_SECTIONS                                                  \
617   in_text_coal, in_text_unlikely, in_text_unlikely_coal,                \
618   in_const, in_const_data, in_cstring, in_literal4, in_literal8,        \
619   in_const_coal, in_const_data_coal, in_data_coal,                      \
620   in_constructor, in_destructor, in_mod_init, in_mod_term,              \
621   in_objc_class, in_objc_meta_class, in_objc_category,                  \
622   in_objc_class_vars, in_objc_instance_vars,                            \
623   in_objc_cls_meth, in_objc_inst_meth,                                  \
624   in_objc_cat_cls_meth, in_objc_cat_inst_meth,                          \
625   in_objc_selector_refs,                                                \
626   in_objc_selector_fixup,                                               \
627   in_objc_symbols, in_objc_module_info,                                 \
628   in_objc_protocol, in_objc_string_object,                              \
629   in_objc_constant_string_object,                                       \
630   in_objc_image_info,                                                   \
631   in_objc_class_names, in_objc_meth_var_names,                          \
632   in_objc_meth_var_types, in_objc_cls_refs,                             \
633   in_machopic_nl_symbol_ptr,                                            \
634   in_machopic_lazy_symbol_ptr,                                          \
635   in_machopic_symbol_stub,                                              \
636   in_machopic_symbol_stub1,                                             \
637   in_machopic_picsymbol_stub,                                           \
638   in_machopic_picsymbol_stub1,                                          \
639   in_darwin_exception, in_darwin_eh_frame,                              \
640   num_sections
641
642 #undef  EXTRA_SECTION_FUNCTIONS
643 #define EXTRA_SECTION_FUNCTIONS                                 \
644 static void objc_section_init (void);                           \
645 SECTION_FUNCTION (text_coal_section,                            \
646                   in_text_coal,                                 \
647                   ".section __TEXT,__textcoal_nt,coalesced,"    \
648                     "pure_instructions", 0)                     \
649 SECTION_FUNCTION (text_unlikely_coal_section,                   \
650                   in_text_unlikely_coal,                        \
651                   ".section __TEXT,__text_unlikely_coal,"       \
652                     "coalesced,pure_instructions", 0)           \
653 SECTION_FUNCTION (const_section,                                \
654                   in_const,                                     \
655                   ".const", 0)                                  \
656 SECTION_FUNCTION (const_coal_section,                           \
657                   in_const_coal,                                \
658                   ".section __TEXT,__const_coal,coalesced", 0)  \
659 SECTION_FUNCTION (const_data_section,                           \
660                   in_const_data,                                \
661                   ".const_data", 0)                             \
662 SECTION_FUNCTION (const_data_coal_section,                      \
663                   in_const_data_coal,                           \
664                   ".section __DATA,__const_coal,coalesced", 0)  \
665 SECTION_FUNCTION (data_coal_section,                            \
666                   in_data_coal,                                 \
667                   ".section __DATA,__datacoal_nt,coalesced", 0) \
668 SECTION_FUNCTION (cstring_section,                              \
669                   in_cstring,                                   \
670                   ".cstring", 0)                                \
671 SECTION_FUNCTION (literal4_section,                             \
672                   in_literal4,                                  \
673                   ".literal4", 0)                               \
674 SECTION_FUNCTION (literal8_section,                             \
675                   in_literal8,                                  \
676                   ".literal8", 0)                               \
677 SECTION_FUNCTION (constructor_section,                          \
678                   in_constructor,                               \
679                   ".constructor", 0)                            \
680 SECTION_FUNCTION (mod_init_section,                             \
681                   in_mod_init,                                  \
682                   ".mod_init_func", 0)                          \
683 SECTION_FUNCTION (mod_term_section,                             \
684                   in_mod_term,                                  \
685                   ".mod_term_func", 0)                          \
686 SECTION_FUNCTION (destructor_section,                           \
687                   in_destructor,                                \
688                   ".destructor", 0)                             \
689 SECTION_FUNCTION (objc_class_section,                           \
690                   in_objc_class,                                \
691                   ".objc_class", 1)                             \
692 SECTION_FUNCTION (objc_meta_class_section,                      \
693                   in_objc_meta_class,                           \
694                   ".objc_meta_class", 1)                        \
695 SECTION_FUNCTION (objc_category_section,                        \
696                   in_objc_category,                             \
697                 ".objc_category", 1)                            \
698 SECTION_FUNCTION (objc_class_vars_section,                      \
699                   in_objc_class_vars,                           \
700                   ".objc_class_vars", 1)                        \
701 SECTION_FUNCTION (objc_instance_vars_section,                   \
702                   in_objc_instance_vars,                        \
703                   ".objc_instance_vars", 1)                     \
704 SECTION_FUNCTION (objc_cls_meth_section,                        \
705                   in_objc_cls_meth,                             \
706                   ".objc_cls_meth", 1)                          \
707 SECTION_FUNCTION (objc_inst_meth_section,                       \
708                   in_objc_inst_meth,                            \
709                   ".objc_inst_meth", 1)                         \
710 SECTION_FUNCTION (objc_cat_cls_meth_section,                    \
711                   in_objc_cat_cls_meth,                         \
712                   ".objc_cat_cls_meth", 1)                      \
713 SECTION_FUNCTION (objc_cat_inst_meth_section,                   \
714                   in_objc_cat_inst_meth,                        \
715                   ".objc_cat_inst_meth", 1)                     \
716 SECTION_FUNCTION (objc_selector_refs_section,                   \
717                   in_objc_selector_refs,                        \
718                   ".objc_message_refs", 1)                      \
719 SECTION_FUNCTION (objc_selector_fixup_section,                               \
720                   in_objc_selector_fixup,                                    \
721                   ".section __OBJC, __sel_fixup, regular, no_dead_strip", 1) \
722 SECTION_FUNCTION (objc_symbols_section,                                 \
723                   in_objc_symbols,                                      \
724                   ".objc_symbols", 1)                                   \
725 SECTION_FUNCTION (objc_module_info_section,                             \
726                   in_objc_module_info,                                  \
727                   ".objc_module_info", 1)                               \
728 SECTION_FUNCTION (objc_protocol_section,                                \
729                   in_objc_protocol,                                     \
730                   ".objc_protocol", 1)                                  \
731 SECTION_FUNCTION (objc_string_object_section,                           \
732                   in_objc_string_object,                                \
733                   ".objc_string_object", 1)                             \
734 SECTION_FUNCTION (objc_constant_string_object_section,                  \
735                   in_objc_constant_string_object,                       \
736                   ".section __OBJC, __cstring_object, regular, "        \
737                     "no_dead_strip", 1)                                 \
738 /* Fix-and-Continue image marker.  */                                   \
739 SECTION_FUNCTION (objc_image_info_section,                              \
740                   in_objc_image_info,                                   \
741                   ".section __OBJC, __image_info, regular, "            \
742                     "no_dead_strip", 1)                                 \
743 SECTION_FUNCTION (objc_class_names_section,                             \
744                 in_objc_class_names,                                    \
745                 ".objc_class_names", 1)                                 \
746 SECTION_FUNCTION (objc_meth_var_names_section,                          \
747                 in_objc_meth_var_names,                                 \
748                 ".objc_meth_var_names", 1)                              \
749 SECTION_FUNCTION (objc_meth_var_types_section,                          \
750                 in_objc_meth_var_types,                                 \
751                 ".objc_meth_var_types", 1)                              \
752 SECTION_FUNCTION (objc_cls_refs_section,                                \
753                 in_objc_cls_refs,                                       \
754                 ".objc_cls_refs", 1)                                    \
755 \
756 SECTION_FUNCTION (machopic_lazy_symbol_ptr_section,                     \
757                 in_machopic_lazy_symbol_ptr,                            \
758                 ".lazy_symbol_pointer", 0)                              \
759 SECTION_FUNCTION (machopic_nl_symbol_ptr_section,                       \
760                 in_machopic_nl_symbol_ptr,                              \
761                 ".non_lazy_symbol_pointer", 0)                          \
762 SECTION_FUNCTION (machopic_symbol_stub_section,                         \
763                 in_machopic_symbol_stub,                                \
764                 ".symbol_stub", 0)                                      \
765 SECTION_FUNCTION (machopic_symbol_stub1_section,                        \
766                 in_machopic_symbol_stub1,                               \
767                 ".section __TEXT,__symbol_stub1,symbol_stubs,"          \
768                   "pure_instructions,16", 0)                            \
769 SECTION_FUNCTION (machopic_picsymbol_stub_section,                      \
770                 in_machopic_picsymbol_stub,                             \
771                 ".picsymbol_stub", 0)                                   \
772 SECTION_FUNCTION (machopic_picsymbol_stub1_section,                     \
773                 in_machopic_picsymbol_stub1,                            \
774                 ".section __TEXT,__picsymbolstub1,symbol_stubs,"        \
775                   "pure_instructions,32", 0)                            \
776 SECTION_FUNCTION (darwin_exception_section,                             \
777                 in_darwin_exception,                                    \
778                 ".section __DATA,__gcc_except_tab", 0)                  \
779 SECTION_FUNCTION (darwin_eh_frame_section,                              \
780                 in_darwin_eh_frame,                                     \
781                 ".section " EH_FRAME_SECTION_NAME ",__eh_frame"         \
782                   EH_FRAME_SECTION_ATTR, 0)                             \
783 \
784 static void                                     \
785 objc_section_init (void)                        \
786 {                                               \
787   static int been_here = 0;                     \
788                                                 \
789   if (been_here == 0)                           \
790     {                                           \
791       been_here = 1;                            \
792           /* written, cold -> hot */            \
793       objc_cat_cls_meth_section ();             \
794       objc_cat_inst_meth_section ();            \
795       objc_string_object_section ();            \
796       objc_constant_string_object_section ();   \
797       objc_selector_refs_section ();            \
798       objc_selector_fixup_section ();           \
799       objc_cls_refs_section ();                 \
800       objc_class_section ();                    \
801       objc_meta_class_section ();               \
802           /* shared, hot -> cold */             \
803       objc_cls_meth_section ();                 \
804       objc_inst_meth_section ();                \
805       objc_protocol_section ();                 \
806       objc_class_names_section ();              \
807       objc_meth_var_types_section ();           \
808       objc_meth_var_names_section ();           \
809       objc_category_section ();                 \
810       objc_class_vars_section ();               \
811       objc_instance_vars_section ();            \
812       objc_module_info_section ();              \
813       objc_symbols_section ();                  \
814     }                                           \
815 }
816
817 #define READONLY_DATA_SECTION const_section
818
819 #undef  TARGET_ASM_SELECT_SECTION
820 #define TARGET_ASM_SELECT_SECTION machopic_select_section
821 #define USE_SELECT_SECTION_FOR_FUNCTIONS
822
823 #undef  TARGET_ASM_SELECT_RTX_SECTION
824 #define TARGET_ASM_SELECT_RTX_SECTION machopic_select_rtx_section
825 #undef  TARGET_ASM_UNIQUE_SECTION
826 #define TARGET_ASM_UNIQUE_SECTION darwin_unique_section
827 #undef  TARGET_ASM_FUNCTION_RODATA_SECTION
828 #define TARGET_ASM_FUNCTION_RODATA_SECTION default_no_function_rodata_section
829
830
831 #define ASM_DECLARE_UNRESOLVED_REFERENCE(FILE,NAME)                     \
832     do {                                                                \
833          if (FILE) {                                                    \
834            if (MACHOPIC_INDIRECT)                                       \
835              fprintf (FILE, "\t.lazy_reference ");                      \
836            else                                                         \
837              fprintf (FILE, "\t.reference ");                           \
838            assemble_name (FILE, NAME);                                  \
839            fprintf (FILE, "\n");                                        \
840          }                                                              \
841        } while (0)
842
843 #define ASM_DECLARE_CLASS_REFERENCE(FILE,NAME)                          \
844     do {                                                                \
845          if (FILE) {                                                    \
846            fprintf (FILE, "\t");                                        \
847            assemble_name (FILE, NAME);                                  \
848            fprintf (FILE, "=0\n");                                      \
849            (*targetm.asm_out.globalize_label) (FILE, NAME);             \
850          }                                                              \
851        } while (0)
852
853 /* Globalizing directive for a label.  */
854 #define GLOBAL_ASM_OP ".globl "
855 #define TARGET_ASM_GLOBALIZE_LABEL darwin_globalize_label
856
857 /* Emit an assembler directive to set visibility for a symbol.  Used
858    to support visibility attribute and Darwin's private extern
859    feature.  */
860 #undef TARGET_ASM_ASSEMBLE_VISIBILITY
861 #define TARGET_ASM_ASSEMBLE_VISIBILITY darwin_assemble_visibility
862
863 /* Extra attributes for Darwin.  */
864 #define SUBTARGET_ATTRIBUTE_TABLE                                            \
865   /* { name, min_len, max_len, decl_req, type_req, fn_type_req, handler } */ \
866   { "weak_import", 0, 0, true, false, false,                                 \
867     darwin_handle_weak_import_attribute }
868
869 #undef ASM_GENERATE_INTERNAL_LABEL
870 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM)   \
871   sprintf (LABEL, "*%s%ld", PREFIX, (long)(NUM))
872
873 #undef TARGET_ASM_MARK_DECL_PRESERVED
874 #define TARGET_ASM_MARK_DECL_PRESERVED darwin_mark_decl_preserved
875
876 /* Set on a symbol with SYMBOL_FLAG_FUNCTION or
877    MACHO_SYMBOL_FLAG_VARIABLE to indicate that the function or
878    variable has been defined in this translation unit.  */
879
880 #define MACHO_SYMBOL_FLAG_VARIABLE (SYMBOL_FLAG_MACH_DEP)
881 #define MACHO_SYMBOL_FLAG_DEFINED ((SYMBOL_FLAG_MACH_DEP) << 1)
882
883 /* Set on a symbol to indicate when fix-and-continue style code
884    generation is being used and the symbol refers to a static symbol
885    that should be rebound from new instances of a translation unit to
886    the original instance of the data.  */
887
888 #define MACHO_SYMBOL_STATIC ((SYMBOL_FLAG_MACH_DEP) << 2)
889
890 /* Symbolic names for various things we might know about a symbol.  */
891
892 enum machopic_addr_class {
893   MACHOPIC_UNDEFINED,
894   MACHOPIC_DEFINED_DATA,
895   MACHOPIC_UNDEFINED_DATA,
896   MACHOPIC_DEFINED_FUNCTION,
897   MACHOPIC_UNDEFINED_FUNCTION
898 };
899
900 /* Macros defining the various PIC cases.  */
901
902 #define MACHO_DYNAMIC_NO_PIC_P  (TARGET_DYNAMIC_NO_PIC)
903 #define MACHOPIC_INDIRECT       (flag_pic || MACHO_DYNAMIC_NO_PIC_P)
904 #define MACHOPIC_JUST_INDIRECT  (flag_pic == 1 || MACHO_DYNAMIC_NO_PIC_P)
905 #define MACHOPIC_PURE           (flag_pic == 2 && ! MACHO_DYNAMIC_NO_PIC_P)
906
907 #undef TARGET_ENCODE_SECTION_INFO
908 #define TARGET_ENCODE_SECTION_INFO  darwin_encode_section_info
909 #undef TARGET_STRIP_NAME_ENCODING
910 #define TARGET_STRIP_NAME_ENCODING  default_strip_name_encoding
911
912 #define GEN_BINDER_NAME_FOR_STUB(BUF,STUB,STUB_LENGTH)          \
913   do {                                                          \
914     const char *const stub_ = (STUB);                           \
915     char *buffer_ = (BUF);                                      \
916     strcpy (buffer_, stub_);                                    \
917     if (stub_[0] == '"')                                        \
918       {                                                         \
919         strcpy (buffer_ + (STUB_LENGTH) - 1, "_binder\"");      \
920       }                                                         \
921     else                                                        \
922       {                                                         \
923         strcpy (buffer_ + (STUB_LENGTH), "_binder");            \
924       }                                                         \
925   } while (0)
926
927 #define GEN_SYMBOL_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH)    \
928   do {                                                          \
929     const char *const symbol_ = (SYMBOL);                       \
930     char *buffer_ = (BUF);                                      \
931     if (name_needs_quotes (symbol_) && symbol_[0] != '"')       \
932       {                                                         \
933           sprintf (buffer_, "\"%s\"", symbol_);                 \
934       }                                                         \
935     else                                                        \
936       {                                                         \
937         strcpy (buffer_, symbol_);                              \
938       }                                                         \
939   } while (0)
940
941 /* Given a symbol name string, create the lazy pointer version
942    of the symbol name.  */
943
944 #define GEN_LAZY_PTR_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH)  \
945   do {                                                          \
946     const char *symbol_ = (SYMBOL);                             \
947     char *buffer_ = (BUF);                                      \
948     if (symbol_[0] == '"')                                      \
949       {                                                         \
950         strcpy (buffer_, "\"L");                                \
951         strcpy (buffer_ + 2, symbol_ + 1);                      \
952         strcpy (buffer_ + (SYMBOL_LENGTH), "$lazy_ptr\"");      \
953       }                                                         \
954     else if (name_needs_quotes (symbol_))                       \
955       {                                                         \
956         strcpy (buffer_, "\"L");                                \
957         strcpy (buffer_ + 2, symbol_);                          \
958         strcpy (buffer_ + (SYMBOL_LENGTH) + 2, "$lazy_ptr\"");  \
959       }                                                         \
960     else                                                        \
961       {                                                         \
962         strcpy (buffer_, "L");                                  \
963         strcpy (buffer_ + 1, symbol_);                          \
964         strcpy (buffer_ + (SYMBOL_LENGTH) + 1, "$lazy_ptr");    \
965       }                                                         \
966   } while (0)
967
968 #define TARGET_ASM_EXCEPTION_SECTION darwin_exception_section
969
970 #define TARGET_ASM_EH_FRAME_SECTION darwin_eh_frame_section
971
972 #define EH_FRAME_SECTION_NAME   "__TEXT"
973 #define EH_FRAME_SECTION_ATTR ",coalesced,no_toc+strip_static_syms+live_support"
974
975 /* Java runtime class list.  */
976 #define JCR_SECTION_NAME "__DATA,jcr,regular,no_dead_strip"
977
978 #undef ASM_PREFERRED_EH_DATA_FORMAT
979 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL)  \
980   (((CODE) == 2 && (GLOBAL) == 1) \
981    ? (DW_EH_PE_pcrel | DW_EH_PE_indirect | DW_EH_PE_sdata4) : \
982      ((CODE) == 1 || (GLOBAL) == 0) ? DW_EH_PE_pcrel : DW_EH_PE_absptr)
983
984 #define ASM_OUTPUT_DWARF_DELTA(FILE,SIZE,LABEL1,LABEL2)  \
985   darwin_asm_output_dwarf_delta (FILE, SIZE, LABEL1, LABEL2)
986
987 #define ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX(ASM_OUT_FILE, ENCODING, SIZE, ADDR, DONE)     \
988       if (ENCODING == ASM_PREFERRED_EH_DATA_FORMAT (2, 1)) {                            \
989         darwin_non_lazy_pcrel (ASM_OUT_FILE, ADDR);                                     \
990         goto DONE;                                                                      \
991       }
992
993 /* Experimentally, putting jump tables in text is faster on SPEC.
994    Also this is needed for correctness for coalesced functions.  */
995
996 #ifndef JUMP_TABLES_IN_TEXT_SECTION
997 #define JUMP_TABLES_IN_TEXT_SECTION 1
998 #endif
999
1000 #define TARGET_TERMINATE_DW2_EH_FRAME_INFO false
1001
1002 #undef TARGET_ASM_NAMED_SECTION
1003 #define TARGET_ASM_NAMED_SECTION darwin_asm_named_section
1004
1005 #define DARWIN_REGISTER_TARGET_PRAGMAS()                        \
1006   do {                                                          \
1007     c_register_pragma (0, "mark", darwin_pragma_ignore);        \
1008     c_register_pragma (0, "options", darwin_pragma_options);    \
1009     c_register_pragma (0, "segment", darwin_pragma_ignore);     \
1010     c_register_pragma (0, "unused", darwin_pragma_unused);      \
1011   } while (0)
1012
1013 #undef ASM_APP_ON
1014 #define ASM_APP_ON ""
1015 #undef ASM_APP_OFF
1016 #define ASM_APP_OFF ""
1017
1018 void darwin_register_frameworks (const char *, const char *, int);
1019 void darwin_register_objc_includes (const char *, const char *, int);
1020 #define TARGET_EXTRA_PRE_INCLUDES darwin_register_objc_includes
1021 #define TARGET_EXTRA_INCLUDES darwin_register_frameworks
1022
1023 void add_framework_path (char *);
1024 #define TARGET_OPTF add_framework_path
1025
1026 #define TARGET_HAS_F_SETLKW
1027
1028 /* Darwin before 7.0 does not have C99 functions.   */
1029 #ifndef TARGET_C99_FUNCTIONS
1030 #define TARGET_C99_FUNCTIONS 0
1031 #endif
1032
1033 #define WINT_TYPE "int"
1034
1035 #endif /* CONFIG_DARWIN_H */