darwin.h   [plain text]

/* Target definitions for Darwin (Mac OS X) systems.
   Copyright (C) 1989, 1990, 1991, 1992, 1993, 2000, 2001, 2002, 2003, 2004,
   2005
   Free Software Foundation, Inc.
   Contributed by Apple Computer Inc.

This file is part of GCC.

GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.

GCC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING.  If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.  */

#ifndef CONFIG_DARWIN_H
#define CONFIG_DARWIN_H

/* The definitions in this file are common to all processor types
   running Darwin, which is the kernel for Mac OS X.  Darwin is
   basically a BSD user layer laid over a Mach kernel, then evolved
   for many years (at NeXT) in parallel with other Unix systems.  So
   while the runtime is a somewhat idiosyncratic Mach-based thing,
   other definitions look like they would for a BSD variant.  */

/* Although NeXT ran on many different architectures, as of Jan 2001
   the only supported Darwin targets are PowerPC and x86.  */

/* One of Darwin's NeXT legacies is the Mach-O format, which is partly
   like a.out and partly like COFF, with additional features like
   multi-architecture binary support.  */

#define OBJECT_FORMAT_MACHO

/* APPLE LOCAL begin dynamic-no-pic */
extern int machopic_symbol_defined_p (rtx);
/* APPLE LOCAL end dynamic-no-pic */

/* Suppress g++ attempt to link in the math library automatically. */
#define MATH_LIBRARY ""

/* We have atexit.  */

#define HAVE_ATEXIT

/* Define an empty body for the function do_global_dtors() in libgcc2.c.  */

#define DO_GLOBAL_DTORS_BODY

/* The string value for __SIZE_TYPE__.  */

#ifndef SIZE_TYPE
#define SIZE_TYPE "long unsigned int"
#endif

/* Type used for ptrdiff_t, as a string used in a declaration.  */

#undef  PTRDIFF_TYPE
#define PTRDIFF_TYPE "int"

/* wchar_t is int.  */

#undef	WCHAR_TYPE
#define WCHAR_TYPE "int"
#undef	WCHAR_TYPE_SIZE
#define WCHAR_TYPE_SIZE 32

/* Default to using the NeXT-style runtime, since that's what is
   pre-installed on Darwin systems.  */

#define NEXT_OBJC_RUNTIME

/* Don't default to pcc-struct-return, because gcc is the only compiler, and
   we want to retain compatibility with older gcc versions.  */

#undef	DEFAULT_PCC_STRUCT_RETURN
#define DEFAULT_PCC_STRUCT_RETURN 0

/* APPLE LOCAL begin -Wfour-char-constants */
/* Don't warn about MacOS-style 'APPL' four-char-constants.  */
#undef WARN_FOUR_CHAR_CONSTANTS
#define WARN_FOUR_CHAR_CONSTANTS 0
/* APPLE LOCAL end -Wfour-char-constants */

/* This table intercepts weirdo options whose names would interfere
   with normal driver conventions, and either translates them into
   standardly-named options, or adds a 'Z' so that they can get to
   specs processing without interference.

   Do not expand a linker option to "-Xlinker -<option>", since that
   forfeits the ability to control via spec strings later.  However,
   as a special exception, do this translation with -filelist, because
   otherwise the driver will think there are no input files and quit.
   (The alternative would be to hack the driver to recognize -filelist
   specially, but it's simpler to use the translation table.)

   Note that an option name with a prefix that matches another option
   name, that also takes an argument, needs to be modified so the
   prefix is different, otherwise a '*' after the shorter option will
   match with the longer one.
   
   The SUBTARGET_OPTION_TRANSLATE_TABLE macro, which _must_ be defined
   in gcc/config/{i386,rs6000}/darwin.h, should contain any additional
   command-line option translations specific to the particular target
   architecture.  */
   
#define TARGET_OPTION_TRANSLATE_TABLE \
/* APPLE LOCAL KEXT terminated-vtables */ \
  { "-fterminated-vtables", "-fapple-kext" }, \
/* APPLE LOCAL KEXT indirect-virtual-calls --sts */ \
  { "-findirect-virtual-calls", "-fapple-kext" }, \
  { "-all_load", "-Zall_load" },  \
  { "-allowable_client", "-Zallowable_client" },  \
  { "-arch_errors_fatal", "-Zarch_errors_fatal" },  \
  { "-bind_at_load", "-Zbind_at_load" },  \
  { "-bundle", "-Zbundle" },  \
  { "-bundle_loader", "-Zbundle_loader" },  \
  { "-weak_reference_mismatches", "-Zweak_reference_mismatches" },  \
  { "-dead_strip", "-Zdead_strip" }, \
  { "-no_dead_strip_inits_and_terms", "-Zno_dead_strip_inits_and_terms" }, \
  { "-dependency-file", "-MF" }, \
  { "-dylib_file", "-Zdylib_file" }, \
  { "-dynamic", "-Zdynamic" },  \
  { "-dynamiclib", "-Zdynamiclib" },  \
  { "-exported_symbols_list", "-Zexported_symbols_list" },  \
  { "-gfull", "-g -fno-eliminate-unused-debug-symbols" }, \
  { "-gused", "-g -feliminate-unused-debug-symbols" }, \
  { "-segaddr", "-Zsegaddr" }, \
  { "-segs_read_only_addr", "-Zsegs_read_only_addr" }, \
  { "-segs_read_write_addr", "-Zsegs_read_write_addr" }, \
  { "-seg_addr_table", "-Zseg_addr_table" }, \
  /* APPLE LOCAL mainline 4.2 3941990 */ \
  { "-seg_addr_table_filename", "-Zfn_seg_addr_table_filename" }, \
  { "-filelist", "-Xlinker -filelist -Xlinker" },  \
  { "-framework", "-Xlinker -framework -Xlinker" },  \
  { "-flat_namespace", "-Zflat_namespace" },  \
  { "-force_cpusubtype_ALL", "-Zforce_cpusubtype_ALL" },  \
  { "-force_flat_namespace", "-Zforce_flat_namespace" },  \
  { "-image_base", "-Zimage_base" },  \
  { "-init", "-Zinit" },  \
  { "-install_name", "-Zinstall_name" },  \
  { "-multiply_defined_unused", "-Zmultiplydefinedunused" },  \
  { "-multiply_defined", "-Zmultiply_defined" },  \
  { "-multi_module", "-Zmulti_module" },  \
  { "-static", "-static -Wa,-static" },  \
  { "-single_module", "-Zsingle_module" },  \
  { "-unexported_symbols_list", "-Zunexported_symbols_list" }, \
  /* APPLE LOCAL ObjC GC */ \
  { "-fobjc-gc", "-fobjc-gc -Wno-non-lvalue-assign" }, \
  /* APPLE LOCAL begin constant cfstrings */	\
  { "-fconstant-cfstrings", "-mconstant-cfstrings" }, \
  { "-fno-constant-cfstrings", "-mno-constant-cfstrings" }, \
  { "-Wnonportable-cfstrings", "-mwarn-nonportable-cfstrings" }, \
  { "-Wno-nonportable-cfstrings", "-mno-warn-nonportable-cfstrings" }, \
  { "-fpascal-strings", "-mpascal-strings" },	\
  { "-fno-pascal-strings", "-mno-pascal-strings" },	\
  /* APPLE LOCAL end constant cfstrings */	\
  SUBTARGET_OPTION_TRANSLATE_TABLE

/* APPLE LOCAL begin constant cfstrings */
extern int darwin_constant_cfstrings;
extern const char *darwin_constant_cfstrings_switch;
extern int darwin_warn_nonportable_cfstrings;
extern const char *darwin_warn_nonportable_cfstrings_switch;
extern int darwin_pascal_strings;
extern const char *darwin_pascal_strings_switch;
extern int darwin_running_cxx;
/* APPLE LOCAL end constant cfstrings */

/* Nonzero if the user has chosen to force sizeof(bool) to be 1
   by providing the -mone-byte-bool switch.  It would be better
   to use SUBTARGET_SWITCHES for this instead of SUBTARGET_OPTIONS,
   but there are no more bits in rs6000 TARGET_SWITCHES.  Note
   that this switch has no "no-" variant. */
extern const char *darwin_one_byte_bool;
  
/* APPLE LOCAL begin pragma reverse_bitfields */
/* True if pragma reverse_bitfields is in effect. */
extern GTY(()) int darwin_reverse_bitfields;
/* APPLE LOCAL end pragma reverse_bitfields */

extern int darwin_fix_and_continue;
extern const char *darwin_fix_and_continue_switch;
/* APPLE LOCAL mainline 2005-09-01 3449986 */
extern const char *darwin_macosx_version_min;

/* APPLE LOCAL begin AT&T-style stub 4164563 */
extern int darwin_macho_att_stub;
extern const char *darwin_macho_att_stub_switch;
#define MACHOPIC_ATT_STUB (darwin_macho_att_stub)
/* APPLE LOCAL end AT&T-style stub 4164563 */

#undef SUBTARGET_OPTIONS
#define SUBTARGET_OPTIONS \
  {"one-byte-bool", &darwin_one_byte_bool, N_("Set sizeof(bool) to 1"), 0 }, \
  {"fix-and-continue", &darwin_fix_and_continue_switch,			\
   N_("Generate code suitable for fast turn around debugging"), 0},	\
/* APPLE LOCAL begin mainline 2005-09-01 3449986 */			\
  {"macosx-version-min=", &darwin_macosx_version_min,			\
   N_("The earliest MacOS X version on which this program will run"),	\
   0 },									\
/* APPLE LOCAL end mainline 2005-09-01 3449986 */			\
  {"no-fix-and-continue", &darwin_fix_and_continue_switch,		\
/* APPLE LOCAL added comma to this line for subsequent A-L additions */ \
   N_("Don't generate code suitable for fast turn around debugging"), 0}, \
  /* APPLE LOCAL begin AT&T-style stub 4164563 */			\
  {"att-stubs", &darwin_macho_att_stub_switch,				\
   N_("Generate AT&T-style stubs for Mach-O"), 0},			\
  {"no-att-stubs", &darwin_macho_att_stub_switch,			\
   N_("Generate traditional Mach-O stubs"), 0},				\
  /* APPLE LOCAL end AT&T-style stub 4164563 */				\
 /* APPLE LOCAL begin constant cfstrings */				\
   {"constant-cfstrings", &darwin_constant_cfstrings_switch,		\
    N_("Generate compile-time CFString objects"), 0},			\
   {"no-constant-cfstrings", &darwin_constant_cfstrings_switch, "", 0},	\
   {"pascal-strings", &darwin_pascal_strings_switch,			\
    N_("Allow use of Pascal strings"), 0},				\
   {"no-pascal-strings", &darwin_pascal_strings_switch, "", 0},		\
   {"warn-nonportable-cfstrings", &darwin_warn_nonportable_cfstrings_switch,		\
    N_("Warn if constant CFString objects contain non-portable characters"), 0},	\
   {"no-warn-nonportable-cfstrings", &darwin_warn_nonportable_cfstrings_switch, "", 0}

#define SUBSUBTARGET_OVERRIDE_OPTIONS					\
do {									\
  /* APPLE LOCAL kext */                                                \
  extern int flag_weak;                                                 \
  if (darwin_constant_cfstrings_switch)					\
    {									\
      const char *base = darwin_constant_cfstrings_switch;		\
      while (base[-1] != 'm') base--;					\
									\
      if (*darwin_constant_cfstrings_switch != '\0')			\
	error ("invalid option `%s'", base);				\
      darwin_constant_cfstrings = (base[0] != 'n');			\
    }									\
  if (darwin_warn_nonportable_cfstrings_switch)				\
    {									\
      const char *base = darwin_warn_nonportable_cfstrings_switch;	\
      while (base[-1] != 'm') base--;					\
									\
      if (*darwin_warn_nonportable_cfstrings_switch != '\0')		\
	error ("invalid option `%s'", base);				\
      darwin_warn_nonportable_cfstrings = (base[0] != 'n');		\
    }									\
  if (darwin_pascal_strings_switch)					\
    {									\
      const char *base = darwin_pascal_strings_switch;			\
      while (base[-1] != 'm') base--;					\
									\
      if (*darwin_pascal_strings_switch != '\0')			\
	error ("invalid option `%s'", base);				\
      darwin_pascal_strings = (base[0] != 'n');				\
      if (darwin_pascal_strings)					\
        CPP_OPTION (parse_in, pascal_strings) = 1;			\
    }									\
  /* The c_dialect...() macros are not available to us here.  */	\
  darwin_running_cxx = (strstr (lang_hooks.name, "C++") != 0);		\
  /* APPLE LOCAL begin kexts --bowdidge */                              \
  /* kexts should always be built without the coalesced sections */     \
  /*  because the kernel loader doesn't grok such sections. */          \
  if (flag_apple_kext) flag_weak = 0;                                   \
  /* APPLE LOCAL end kexts */                                           \
} while(0)

/* APPLE LOCAL begin kexts */
#define SUBTARGET_C_COMMON_OVERRIDE_OPTIONS do {	\
  if (flag_apple_kext && flag_use_cxa_atexit == 2)	\
    flag_use_cxa_atexit = 0;				\
} while (0)
/* APPLE LOCAL end kexts */

#define SUBTARGET_INIT_BUILTINS		\
do {					\
  darwin_init_cfstring_builtins ();	\
} while(0)

#undef TARGET_EXPAND_TREE_BUILTIN
#define TARGET_EXPAND_TREE_BUILTIN darwin_expand_tree_builtin
#undef TARGET_CONSTRUCT_OBJC_STRING
#define TARGET_CONSTRUCT_OBJC_STRING darwin_construct_objc_string

/* APPLE LOCAL end constant cfstrings */

/* These compiler options take n arguments.  */

#undef  WORD_SWITCH_TAKES_ARG
#define WORD_SWITCH_TAKES_ARG(STR)              \
  (DEFAULT_WORD_SWITCH_TAKES_ARG (STR) ? 1 :    \
   !strcmp (STR, "Zallowable_client") ? 1 :     \
   !strcmp (STR, "arch") ? 1 :                  \
   !strcmp (STR, "arch_only") ? 1 :             \
   !strcmp (STR, "Zbundle_loader") ? 1 :        \
   !strcmp (STR, "client_name") ? 1 :           \
   !strcmp (STR, "compatibility_version") ? 1 : \
   !strcmp (STR, "current_version") ? 1 :       \
   !strcmp (STR, "Zdylib_file") ? 1 :           \
   !strcmp (STR, "Zexported_symbols_list") ? 1 : \
   !strcmp (STR, "Zimage_base") ? 1 :           \
   !strcmp (STR, "Zinit") ? 1 :                 \
   !strcmp (STR, "Zinstall_name") ? 1 :         \
   !strcmp (STR, "Zmultiplydefinedunused") ? 1 : \
   !strcmp (STR, "Zmultiply_defined") ? 1 :     \
   !strcmp (STR, "precomp-trustfile") ? 1 :     \
   !strcmp (STR, "read_only_relocs") ? 1 :      \
   !strcmp (STR, "sectcreate") ? 3 :            \
   !strcmp (STR, "sectorder") ? 3 :             \
   !strcmp (STR, "Zsegaddr") ? 2 :              \
   !strcmp (STR, "Zsegs_read_only_addr") ? 1 :  \
   !strcmp (STR, "Zsegs_read_write_addr") ? 1 : \
   !strcmp (STR, "Zseg_addr_table") ? 1 :       \
  /* APPLE LOCAL mainline 4.2 3941990 */ \
   !strcmp (STR, "Zfn_seg_addr_table_filename") ? 1 :\
   !strcmp (STR, "seg1addr") ? 1 :              \
   !strcmp (STR, "segprot") ? 3 :               \
   !strcmp (STR, "sub_library") ? 1 :           \
   !strcmp (STR, "sub_umbrella") ? 1 :          \
   !strcmp (STR, "umbrella") ? 1 :              \
   !strcmp (STR, "undefined") ? 1 :             \
   !strcmp (STR, "Zunexported_symbols_list") ? 1 : \
   !strcmp (STR, "Zweak_reference_mismatches") ? 1 : \
   !strcmp (STR, "pagezero_size") ? 1 :         \
   !strcmp (STR, "segs_read_only_addr") ? 1 :   \
   !strcmp (STR, "segs_read_write_addr") ? 1 :  \
   !strcmp (STR, "sectalign") ? 3 :             \
   !strcmp (STR, "sectobjectsymbols") ? 2 :     \
   !strcmp (STR, "segcreate") ? 3 :             \
   !strcmp (STR, "dylinker_install_name") ? 1 : \
   0)

/* Machine dependent cpp options.  __APPLE_CC__ is defined as the
   Apple include files expect it to be defined and won't work if it
   isn't.  */

/* APPLE LOCAL begin mainline 2005-09-01 3449986 */
/* Machine dependent cpp options.  Don't add more options here, add
   them to darwin_cpp_builtins in darwin-c.c.  */

/* APPLE LOCAL end mainline 2005-09-01 3449986 */
#undef	CPP_SPEC
/* APPLE LOCAL -arch */
#define CPP_SPEC "%{static:%{!dynamic:-D__STATIC__}}%{!static:-D__DYNAMIC__} %{arch}"

/* APPLE LOCAL begin private extern  */
#undef CC1PLUS_SPEC
#define CC1PLUS_SPEC "-D__private_extern__=extern"
/* APPLE LOCAL end private extern */

/* This is mostly a clone of the standard LINK_COMMAND_SPEC, plus
   precomp, libtool, and fat build additions.  Also we
   don't specify a second %G after %L because libSystem is
   self-contained and doesn't need to link against libgcc.a.  */
/* In general, random Darwin linker flags should go into LINK_SPEC
   instead of LINK_COMMAND_SPEC.  The command spec is better for
   specifying the handling of options understood by generic Unix
   linkers, and for positional arguments like libraries.  */
#define LINK_COMMAND_SPEC "\
%{!fdump=*:%{!fsyntax-only:%{!precomp:%{!c:%{!M:%{!MM:%{!E:%{!S:\
    %{!Zdynamiclib:%(linker)}%{Zdynamiclib:/usr/bin/libtool} \
    %l %X %{d} %{s} %{t} %{Z} \
    %{!Zdynamiclib:%{A} %{e*} %{m} %{N} %{n} %{r} %{u*} %{x} %{z}} \
    %{@:-o %f%u.out}%{!@:%{o*}%{!o:-o a.out}} \
"/* APPLE LOCAL mainline 2006-04-01 4495520 */"\
    %{!A:%{!nostdlib:%{!nostartfiles:%S}}} \
"/* APPLE LOCAL add fcreate-profile */"\
    %{L*} %(link_libgcc) %o %{fprofile-arcs|fprofile-generate|fcreate-profile:-lgcov} \
"/* APPLE LOCAL nested functions 4357979  */"\
    %{fnested-functions: -allow_stack_execute} \
    %{!nostdlib:%{!nodefaultlibs:%G %L}} \
    %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} %{F*} }}}}}}}}"

/* Please keep the random linker options in alphabetical order (modulo
   'Z' and 'no' prefixes).  Options that can only go to one of libtool
   or ld must be listed twice, under both !Zdynamiclib and
   Zdynamiclib, with one of the cases reporting an error.  */
/* Note that options taking arguments may appear multiple times on a
   command line with different arguments each time, so put a * after
   their names so all of them get passed.  */
#define LINK_SPEC  \
  "%{static}%{!static:-dynamic} \
   %{fgnu-runtime:%:replace-outfile(-lobjc -lobjc-gnu)}\
   %{!Zdynamiclib: \
     %{Zforce_cpusubtype_ALL:-arch %(darwin_arch) -force_cpusubtype_ALL} \
     %{!Zforce_cpusubtype_ALL:-arch %(darwin_subarch)} \
     %{Zbundle:-bundle} \
     %{Zbundle_loader*:-bundle_loader %*} \
     %{client_name*} \
     %{compatibility_version*:%e-compatibility_version only allowed with -dynamiclib\
} \
     %{current_version*:%e-current_version only allowed with -dynamiclib} \
     %{Zforce_flat_namespace:-force_flat_namespace} \
     %{Zinstall_name*:%e-install_name only allowed with -dynamiclib} \
     %{keep_private_externs} \
     %{private_bundle} \
    } \
   %{Zdynamiclib: \
     %{Zbundle:%e-bundle not allowed with -dynamiclib} \
     %{Zbundle_loader*:%e-bundle_loader not allowed with -dynamiclib} \
     %{client_name*:%e-client_name not allowed with -dynamiclib} \
     %{compatibility_version*} \
     %{current_version*} \
     %{Zforce_cpusubtype_ALL:-arch_only %(darwin_arch)} \
     %{!Zforce_cpusubtype_ALL: -arch_only %(darwin_subarch)} \
     %{Zforce_flat_namespace:%e-force_flat_namespace not allowed with -dynamiclib} \
     %{Zinstall_name*:-install_name %*} \
     %{keep_private_externs:%e-keep_private_externs not allowed with -dynamiclib} \
     %{private_bundle:%e-private_bundle not allowed with -dynamiclib} \
    } \
   %{Zall_load:-all_load}%{Zdynamiclib:%{!Zall_load:-noall_load}} \
   %{Zallowable_client*:-allowable_client %*} \
   %{Zbind_at_load:-bind_at_load} \
   %{Zarch_errors_fatal:-arch_errors_fatal} \
   %{Zdead_strip:-dead_strip} \
   %{Zno_dead_strip_inits_and_terms:-no_dead_strip_inits_and_terms} \
   %{Zdylib_file*:-dylib_file %*} \
   %{Zdynamic:-dynamic}\
   %{Zexported_symbols_list*:-exported_symbols_list %*} \
   %{Zflat_namespace:-flat_namespace} \
   %{headerpad_max_install_names*} \
   %{Zimage_base*:-image_base %*} \
   %{Zinit*:-init %*} \
"/* APPLE LOCAL mainline 2005-09-01 3449986 */"\
   %{mmacosx-version-min=*:-macosx_version_min %*} \
"/* APPLE LOCAL mainline 2006-03-15 3992198 */"\
   %{!mmacosx-version-min=*:%{shared-libgcc:-macosx_version_min 10.3}} \
   %{nomultidefs} \
   %{Zmulti_module:-multi_module} %{Zsingle_module:-single_module} \
   %{Zmultiply_defined*:-multiply_defined %*} \
"/* APPLE LOCAL begin mainline 2006-03-15 3992198 */"\
   %{!Zmultiply_defined*:%{shared-libgcc: \
     %:version-compare(< 10.5 mmacosx-version-min= -multiply_defined) \
     %:version-compare(< 10.5 mmacosx-version-min= suppress)}} \
"/* APPLE LOCAL end mainline 2006-03-15 3992198 */"\
   %{Zmultiplydefinedunused*:-multiply_defined_unused %*} \
   %{prebind} %{noprebind} %{nofixprebinding} %{prebind_all_twolevel_modules} \
   %{read_only_relocs} \
   %{sectcreate*} %{sectorder*} %{seg1addr*} %{segprot*} \
   %{Zsegaddr*:-segaddr %*} \
   %{Zsegs_read_only_addr*:-segs_read_only_addr %*} \
   %{Zsegs_read_write_addr*:-segs_read_write_addr %*} \
   %{Zseg_addr_table*: -seg_addr_table %*} \
   "/* APPLE LOCAL mainline 4.2 3941990 */" \
   %{Zfn_seg_addr_table_filename*:-seg_addr_table_filename %*} \
   %{sub_library*} %{sub_umbrella*} \
   "/* APPLE LOCAL mainline 4.1 2005-06-03 */" \
   %{isysroot*:-syslibroot %*} \
   %{twolevel_namespace} %{twolevel_namespace_hints} \
   %{umbrella*} \
   %{undefined*} \
   %{Zunexported_symbols_list*:-unexported_symbols_list %*} \
   %{Zweak_reference_mismatches*:-weak_reference_mismatches %*} \
   %{!Zweak_reference_mismatches*:-weak_reference_mismatches non-weak} \
   %{X} \
   %{y*} \
   %{w} \
   %{pagezero_size*} %{segs_read_*} %{seglinkedit} %{noseglinkedit}  \
   %{sectalign*} %{sectobjectsymbols*} %{segcreate*} %{whyload} \
   %{whatsloaded} %{dylinker_install_name*} \
   %{dylinker} %{Mach} "


/* APPLE LOCAL begin mainline 2005-09-01 3449986 */
/* Machine dependent libraries.  */

/* APPLE LOCAL end mainline 2005-09-01 3449986 */
#define LIB_SPEC "%{!static:-lSystem}"
/* APPLE LOCAL begin mainline 2005-09-01 3449986 */

/* APPLE LOCAL end mainline 2005-09-01 3449986 */
/* APPLE LOCAL begin mainline 2005-11-15 4276161 */
/* Support -mmacosx-version-min by supplying different (stub) libgcc_s.dylib
   libraries to link against, and by not linking against libgcc_s on
   earlier-than-10.3.9.

   Note that by default, -lgcc_eh is not linked against!  This is
   because in a future version of Darwin the EH frame information may
   be in a new format, or the fallback routine might be changed; if
   you want to explicitly link against the static version of those
   routines, because you know you don't need to unwind through system
   libraries, you need to explicitly say -static-libgcc.
   
   If it is linked against, it has to be before -lgcc, because it may
   need symbols from -lgcc.  */
#undef REAL_LIBGCC_SPEC
#define REAL_LIBGCC_SPEC						   \
/* APPLE LOCAL libgcc_static.a  */					   \
   "%{static:-lgcc_static; static-libgcc: -lgcc_eh -lgcc;		   \
      shared-libgcc|fexceptions:					   \
       %:version-compare(!> 10.5 mmacosx-version-min= -lgcc_s.10.4)	   \
       %:version-compare(>= 10.5 mmacosx-version-min= -lgcc_s.10.5)	   \
       -lgcc;								   \
      :%:version-compare(>< 10.3.9 10.5 mmacosx-version-min= -lgcc_s.10.4) \
       %:version-compare(>= 10.5 mmacosx-version-min= -lgcc_s.10.5)	   \
       -lgcc}"

/* APPLE LOCAL end mainline 2005-11-15 4276161 */
/* APPLE LOCAL begin 4484188 */
/* We specify crt0.o as -lcrt0.o so that ld will search the library path.

   crt3.o provides __cxa_atexit on systems that don't have it.  Since
   it's only used with C++, which requires passing -shared-libgcc, key
   off that to avoid unnecessarily adding a destructor to every
   powerpc program built.  */

#undef  STARTFILE_SPEC
#define STARTFILE_SPEC  \
  "%{!Zdynamiclib:%{Zbundle:%{!static:-lbundle1.o}} \
     %{!Zbundle:%{pg:%{static:-lgcrt0.o} \
                     %{!static:%{object:-lgcrt0.o} \
                               %{!object:%{preload:-lgcrt0.o} \
                                 %{!preload:-lgcrt1.o %(darwin_crt2)}}}} \
                %{!pg:%{static:-lcrt0.o} \
                      %{!static:%{object:-lcrt0.o} \
                                %{!object:%{preload:-lcrt0.o} \
                                  %{!preload:-lcrt1.o %(darwin_crt2)}}}}}}  \
  %{shared-libgcc:%:version-compare(< 10.5 mmacosx-version-min= crt3.o%s)}"

/* APPLE LOCAL end 4484188 */
/* The native Darwin linker doesn't necessarily place files in the order
   that they're specified on the link line.  Thus, it is pointless
   to put anything in ENDFILE_SPEC.  */
/* #define ENDFILE_SPEC "" */

/* Default Darwin ASM_SPEC, very simple.  */
/* APPLE LOCAL begin radar 4161346 */
#define ASM_SPEC "-arch %(darwin_arch) \
  %{Zforce_cpusubtype_ALL:-force_cpusubtype_ALL} \
  %{!Zforce_cpusubtype_ALL:%{faltivec:-force_cpusubtype_ALL}}"
/* APPLE LOCAL end radar 4161346 */
/* APPLE LOCAL begin mainline */
/* We use Dbx symbol format on 32 bit systems  */
#define DBX_DEBUGGING_INFO 1

/* Also enable Dwarf 2 as an option.  */
#define DWARF2_DEBUGGING_INFO

/* Default to stabs */
#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
/* APPLE LOCAL end mainline */
/* APPLE LOCAL begin mainline 2006-03-16 dwarf2 section flags */
#define DEBUG_FRAME_SECTION	"__DWARF,__debug_frame,regular,debug"
#define DEBUG_INFO_SECTION	"__DWARF,__debug_info,regular,debug"
#define DEBUG_ABBREV_SECTION	"__DWARF,__debug_abbrev,regular,debug"
#define DEBUG_ARANGES_SECTION	"__DWARF,__debug_aranges,regular,debug"
#define DEBUG_MACINFO_SECTION	"__DWARF,__debug_macinfo,regular,debug"
#define DEBUG_LINE_SECTION	"__DWARF,__debug_line,regular,debug"
#define DEBUG_LOC_SECTION	"__DWARF,__debug_loc,regular,debug"
#define DEBUG_PUBNAMES_SECTION	"__DWARF,__debug_pubnames,regular,debug"
#define DEBUG_STR_SECTION	"__DWARF,__debug_str,regular,debug"
#define DEBUG_RANGES_SECTION	"__DWARF,__debug_ranges,regular,debug"
/* APPLE LOCAL end mainline 2006-03-16 dwarf2 section flags */

/* APPLE LOCAL begin gdb only used symbols */
/* Support option to generate stabs for only used symbols. */

#define DBX_ONLY_USED_SYMBOLS
/* APPLE LOCAL end gdb only used symbols */

/* When generating stabs debugging, use N_BINCL entries.  */

#define DBX_USE_BINCL

/* There is no limit to the length of stabs strings.  */

#define DBX_CONTIN_LENGTH 0

/* gdb needs a null N_SO at the end of each file for scattered loading.  */

#define DBX_OUTPUT_NULL_N_SO_AT_MAIN_SOURCE_FILE_END

/* GCC's definition of 'one_only' is the same as its definition of 'weak'.  */
#define MAKE_DECL_ONE_ONLY(DECL) (DECL_WEAK (DECL) = 1)

/* Mach-O supports 'weak imports', and 'weak definitions' in coalesced
   sections.  machopic_select_section ensures that weak variables go in
   coalesced sections.  Weak aliases (or any other kind of aliases) are
   not supported.  Weak symbols that aren't visible outside the .s file
   are not supported.  */
#define ASM_WEAKEN_DECL(FILE, DECL, NAME, ALIAS)			\
  do {									\
    if (ALIAS)								\
      {									\
	warning ("alias definitions not supported in Mach-O; ignored");	\
	break;								\
      }									\
 									\
    if (! DECL_EXTERNAL (DECL) && TREE_PUBLIC (DECL))			\
      targetm.asm_out.globalize_label (FILE, NAME);			\
    if (DECL_EXTERNAL (DECL))						\
      fputs ("\t.weak_reference ", FILE);				\
    else if (! lookup_attribute ("weak", DECL_ATTRIBUTES (DECL))	\
	&& lookup_attribute ("weak_import", DECL_ATTRIBUTES (DECL)))	\
      break;								\
    else if (TREE_PUBLIC (DECL))					\
      fputs ("\t.weak_definition ", FILE);				\
    else								\
      break;								\
    assemble_name (FILE, NAME);						\
    fputc ('\n', FILE);							\
  } while (0)

/* Darwin has the pthread routines in libSystem, which every program
   links to, so there's no need for weak-ness for that.  */
#define GTHREAD_USE_WEAK 0

/* The Darwin linker imposes two limitations on common symbols: they 
   can't have hidden visibility, and they can't appear in dylibs.  As
   a consequence, we should never use common symbols to represent 
   vague linkage. */
#undef USE_COMMON_FOR_ONE_ONLY
#define USE_COMMON_FOR_ONE_ONLY 0

/* The Darwin linker doesn't want coalesced symbols to appear in
   a static archive's table of contents. */
#undef TARGET_WEAK_NOT_IN_ARCHIVE_TOC
#define TARGET_WEAK_NOT_IN_ARCHIVE_TOC 1

/* APPLE LOCAL begin mainline 4.2 2005-12-06 4263752 */
/* On Darwin, we don't (at the time of writing) have linkonce sections
   with names, so it's safe to make the class data not comdat.  */
#define TARGET_CXX_CLASS_DATA_ALWAYS_COMDAT hook_bool_void_false

/* APPLE LOCAL end mainline 4.2 2005-12-06 4263752 */
/* We make exception information linkonce. */
#undef TARGET_USES_WEAK_UNWIND_INFO
#define TARGET_USES_WEAK_UNWIND_INFO 1

/* We need to use a nonlocal label for the start of an EH frame: the
   Darwin linker requires that a coalesced section start with a label. */
#undef FRAME_BEGIN_LABEL
/* APPLE LOCAL mainline 2006-03-16 dwarf2 4392520 */
#define FRAME_BEGIN_LABEL (for_eh ? "EH_frame" : "Lframe")

/* Emit a label for the FDE corresponding to DECL.  EMPTY means 
   emit a label for an empty FDE. */
#define TARGET_ASM_EMIT_UNWIND_LABEL darwin_emit_unwind_label

/* APPLE LOCAL begin mainline */
/* Emit a label to separate the exception table.  */
#define TARGET_ASM_EMIT_EXCEPT_TABLE_LABEL darwin_emit_except_table_label
/* APPLE LOCAL end mainline */
/* Our profiling scheme doesn't LP labels and counter words.  */

#define NO_PROFILE_COUNTERS	1

#undef	INIT_SECTION_ASM_OP
#define INIT_SECTION_ASM_OP

/* APPLE LOCAL begin static structors in __StaticInit section */
#define STATIC_INIT_SECTION "__TEXT,__StaticInit,regular,pure_instructions"
/* APPLE LOCAL end static structors in __StaticInit section */

#undef	INVOKE__main

#define TARGET_ASM_CONSTRUCTOR  machopic_asm_out_constructor
#define TARGET_ASM_DESTRUCTOR   machopic_asm_out_destructor

/* Always prefix with an underscore.  */

#define USER_LABEL_PREFIX "_"

/* Don't output a .file directive.  That is only used by the assembler for
   error reporting.  */
#undef	TARGET_ASM_FILE_START_FILE_DIRECTIVE
#define TARGET_ASM_FILE_START_FILE_DIRECTIVE false

#undef  TARGET_ASM_FILE_END
#define TARGET_ASM_FILE_END darwin_file_end

#define ASM_OUTPUT_SKIP(FILE,SIZE)  \
  fprintf (FILE, "\t.space "HOST_WIDE_INT_PRINT_UNSIGNED"\n", SIZE)

/* Give ObjC methods pretty symbol names.  */

#undef	OBJC_GEN_METHOD_LABEL
#define OBJC_GEN_METHOD_LABEL(BUF,IS_INST,CLASS_NAME,CAT_NAME,SEL_NAME,NUM) \
  do { if (CAT_NAME)							\
	 sprintf (BUF, "%c[%s(%s) %s]", (IS_INST) ? '-' : '+',		\
		  (CLASS_NAME), (CAT_NAME), (SEL_NAME));		\
       else								\
	 sprintf (BUF, "%c[%s %s]", (IS_INST) ? '-' : '+',		\
		  (CLASS_NAME), (SEL_NAME));				\
     } while (0)

/* The RTTI data (e.g., __ti4name) is common and public (and static),
   but it does need to be referenced via indirect PIC data pointers.
   The machopic_define_symbol calls are telling the machopic subsystem
   that the name *is* defined in this module, so it doesn't need to
   make them indirect.  */

#undef ASM_DECLARE_OBJECT_NAME
#define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL)			\
  do {									\
    const char *xname = NAME;						\
    if (GET_CODE (XEXP (DECL_RTL (DECL), 0)) != SYMBOL_REF)		\
      xname = IDENTIFIER_POINTER (DECL_NAME (DECL));			\
    if (! DECL_WEAK (DECL)						\
        && ((TREE_STATIC (DECL)						\
	     && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))		\
            || DECL_INITIAL (DECL)))					\
        machopic_define_symbol (DECL_RTL (DECL));			\
    if ((TREE_STATIC (DECL)						\
	 && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))		\
        || DECL_INITIAL (DECL))						\
      (* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false);	\
    ASM_OUTPUT_LABEL (FILE, xname);					\
    /* Darwin doesn't support zero-size objects, so give them a		\
       byte.  */							\
    if (tree_low_cst (DECL_SIZE_UNIT (DECL), 1) == 0)			\
      assemble_zeros (1);						\
  } while (0)

#define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL)			\
  do {									\
    const char *xname = NAME;						\
    if (GET_CODE (XEXP (DECL_RTL (DECL), 0)) != SYMBOL_REF)		\
      xname = IDENTIFIER_POINTER (DECL_NAME (DECL));			\
    if (! DECL_WEAK (DECL)						\
        && ((TREE_STATIC (DECL)						\
	     && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))		\
            || DECL_INITIAL (DECL)))					\
        machopic_define_symbol (DECL_RTL (DECL));			\
    if ((TREE_STATIC (DECL)						\
	 && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))		\
        || DECL_INITIAL (DECL))						\
      (* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false);	\
    ASM_OUTPUT_LABEL (FILE, xname);					\
  } while (0)

#define ASM_DECLARE_CONSTANT_NAME(FILE, NAME, EXP, SIZE)	\
  do {								\
    ASM_OUTPUT_LABEL (FILE, NAME);				\
    /* Darwin doesn't support zero-size objects, so give them a	\
       byte.  */						\
    if ((SIZE) == 0)						\
      assemble_zeros (1);					\
  } while (0)

/* Wrap new method names in quotes so the assembler doesn't gag.
   Make Objective-C internal symbols local.  */

#undef	ASM_OUTPUT_LABELREF
#define ASM_OUTPUT_LABELREF(FILE,NAME)					     \
  do {									     \
       const char *xname = (NAME);					     \
       if (! strcmp (xname, "<pic base>"))				     \
         machopic_output_function_base_name(FILE);                           \
       else if (xname[0] == '&' || xname[0] == '*')			     \
         {								     \
           int len = strlen (xname);					     \
	   if (len > 6 && !strcmp ("$stub", xname + len - 5))		     \
	     machopic_validate_stub_or_non_lazy_ptr (xname);		     \
	   else if (len > 7 && !strcmp ("$stub\"", xname + len - 6))	     \
	     machopic_validate_stub_or_non_lazy_ptr (xname);		     \
	   else if (len > 14 && !strcmp ("$non_lazy_ptr", xname + len - 13)) \
	     machopic_validate_stub_or_non_lazy_ptr (xname);		     \
	   /* APPLE LOCAL begin mainline */		    		     \
	   else if (len > 15 && !strcmp ("$non_lazy_ptr\"", xname + len - 14)) \
	     machopic_validate_stub_or_non_lazy_ptr (xname);		     \
	   if (xname[1] != '"' && name_needs_quotes (&xname[1]))	     \
	     fprintf (FILE, "\"%s\"", &xname[1]);			     \
	   else								     \
	     fputs (&xname[1], FILE); 					     \
	   /* APPLE LOCAL end mainline */				     \
	 }								     \
       else if (xname[0] == '+' || xname[0] == '-')			     \
         fprintf (FILE, "\"%s\"", xname);				     \
       else if (!strncmp (xname, "_OBJC_", 6))				     \
         fprintf (FILE, "L%s", xname);					     \
       else if (!strncmp (xname, ".objc_class_name_", 17))		     \
	 fprintf (FILE, "%s", xname);					     \
	 /* APPLE LOCAL begin mainline */				     \
       else if (xname[0] != '"' && name_needs_quotes (xname))		     \
	 fprintf (FILE, "\"%s\"", xname);				     \
	 /* APPLE LOCAL end mainline */					     \
       else								     \
         asm_fprintf (FILE, "%U%s", xname);				     \
  } while (0)

/* Output before executable code.  */
#undef TEXT_SECTION_ASM_OP
#define TEXT_SECTION_ASM_OP "\t.text"

/* Output before writable data.  */

#undef DATA_SECTION_ASM_OP
#define DATA_SECTION_ASM_OP "\t.data"

#undef	ALIGN_ASM_OP
#define ALIGN_ASM_OP		".align"

#undef	ASM_OUTPUT_ALIGN
#define ASM_OUTPUT_ALIGN(FILE,LOG)	\
  if ((LOG) != 0)			\
    fprintf (FILE, "\t%s %d\n", ALIGN_ASM_OP, (LOG))

/* Ensure correct alignment of bss data.  */

#undef	ASM_OUTPUT_ALIGNED_DECL_LOCAL					
#define ASM_OUTPUT_ALIGNED_DECL_LOCAL(FILE, DECL, NAME, SIZE, ALIGN)	\
  do {									\
    fputs (".lcomm ", (FILE));						\
    assemble_name ((FILE), (NAME));					\
    fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED",%u\n", (SIZE),	\
	     floor_log2 ((ALIGN) / BITS_PER_UNIT));			\
    if ((DECL) && ((TREE_STATIC (DECL)					\
	 && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))		\
        || DECL_INITIAL (DECL)))					\
      {									\
	(* targetm.encode_section_info) (DECL, DECL_RTL (DECL), false);	\
	machopic_define_symbol (DECL_RTL (DECL));			\
      }									\
  } while (0)

/* The maximum alignment which the object file format can support.
   For Mach-O, this is 2^15.  */

#undef	MAX_OFILE_ALIGNMENT
#define MAX_OFILE_ALIGNMENT 0x8000

/* Create new Mach-O sections.  */

#undef	SECTION_FUNCTION
#define SECTION_FUNCTION(FUNCTION, SECTION, DIRECTIVE, OBJC)		\
extern void FUNCTION (void);						\
void									\
FUNCTION (void)								\
{									\
  if (in_section != SECTION)						\
    {									\
      if (OBJC)								\
	objc_section_init ();						\
      if (asm_out_file)							\
	fputs ("\t" DIRECTIVE "\n", asm_out_file);			\
      in_section = SECTION;						\
    }									\
}									\

/* Darwin uses many types of special sections.  */

#undef	EXTRA_SECTIONS
#define EXTRA_SECTIONS							\
  in_text_coal, in_text_unlikely, in_text_unlikely_coal,		\
  in_const, in_const_data, in_cstring, in_literal4, in_literal8,	\
  /* APPLE LOCAL x86_64 */						\
  in_literal16,								\
  in_const_coal, in_const_data_coal, in_data_coal,			\
  in_constructor, in_destructor, in_mod_init, in_mod_term,		\
  in_objc_class, in_objc_meta_class, in_objc_category,			\
  in_objc_class_vars, in_objc_instance_vars,				\
  in_objc_cls_meth, in_objc_inst_meth,					\
  in_objc_cat_cls_meth, in_objc_cat_inst_meth,				\
  in_objc_selector_refs,						\
  in_objc_selector_fixup,						\
  in_objc_symbols, in_objc_module_info,					\
  in_objc_protocol, in_objc_string_object,				\
  in_objc_constant_string_object,					\
  in_objc_image_info,							\
  in_objc_class_names, in_objc_meth_var_names,				\
  in_objc_meth_var_types, in_objc_cls_refs,				\
  /* APPLE LOCAL constant cfstrings */					\
  in_cfstring_constant_object,						\
  in_machopic_nl_symbol_ptr,						\
  in_machopic_lazy_symbol_ptr,						\
  /* APPLE LOCAL begin dynamic-no-pic */				\
  in_machopic_lazy_symbol_ptr2,						\
  in_machopic_lazy_symbol_ptr3,						\
  /* APPLE LOCAL end dynamic-no-pic */					\
  in_machopic_symbol_stub,						\
  in_machopic_symbol_stub1,						\
  in_machopic_picsymbol_stub,						\
  in_machopic_picsymbol_stub1,						\
  /* APPLE LOCAL dynamic-no-pic */					\
  in_machopic_picsymbol_stub2,						\
  /* APPLE LOCAL AT&T-style stub 4164563 */				\
  in_machopic_picsymbol_stub3,						\
  in_darwin_exception, in_darwin_eh_frame,				\
  /* APPLE LOCAL begin ObjC new abi  */					\
  in_objc_classlist_section,						\
  in_objc_message_refs_section,						\
  /* APPLE LOCAL end ObjC new abi  */					\
  num_sections

/* APPLE LOCAL begin AT&T-style stub 4164563 */
#ifndef MACHOPIC_NL_SYMBOL_PTR_SECTION
#define MACHOPIC_NL_SYMBOL_PTR_SECTION ".non_lazy_symbol_pointer"
#endif
/* APPLE LOCAL end AT&T-style stub 4164563 */				\

#undef	EXTRA_SECTION_FUNCTIONS
#define EXTRA_SECTION_FUNCTIONS					\
static void objc_section_init (void);				\
SECTION_FUNCTION (text_coal_section,				\
		  in_text_coal,					\
		  ".section __TEXT,__textcoal_nt,coalesced,"	\
		    "pure_instructions", 0)			\
/* APPLE LOCAL mainline 2005-04-15 <radar 4078608> */           \
/* SECTION_FUNCTION (text_unlikely_section) removed. */         \
SECTION_FUNCTION (text_unlikely_coal_section,			\
		  in_text_unlikely_coal,			\
		  ".section __TEXT,__text_unlikely_coal,"	\
		    "coalesced,pure_instructions", 0)		\
SECTION_FUNCTION (const_section,				\
                  in_const,					\
                  ".const", 0)					\
SECTION_FUNCTION (const_coal_section,				\
		  in_const_coal,				\
		  ".section __TEXT,__const_coal,coalesced", 0)	\
SECTION_FUNCTION (const_data_section,				\
                  in_const_data,				\
                  ".const_data", 0)				\
SECTION_FUNCTION (const_data_coal_section,			\
                  in_const_data_coal,				\
                  ".section __DATA,__const_coal,coalesced", 0)	\
SECTION_FUNCTION (data_coal_section,				\
                  in_data_coal,					\
                  ".section __DATA,__datacoal_nt,coalesced", 0)	\
SECTION_FUNCTION (cstring_section,				\
		  in_cstring,					\
		  ".cstring", 0)				\
SECTION_FUNCTION (literal4_section,				\
		  in_literal4,					\
		  ".literal4", 0)				\
SECTION_FUNCTION (literal8_section,				\
		  in_literal8,					\
		  ".literal8", 0)				\
		 /* APPLE LOCAL begin x86_64 */			\
SECTION_FUNCTION (literal16_section,				\
		  in_literal16,					\
		  ".literal16", 0)				\
		 /* APPLE LOCAL end x86_64 */			\
SECTION_FUNCTION (constructor_section,				\
		  in_constructor,				\
		  ".constructor", 0)				\
SECTION_FUNCTION (mod_init_section,				\
		  in_mod_init,					\
		  ".mod_init_func", 0)				\
SECTION_FUNCTION (mod_term_section,				\
		  in_mod_term,					\
		  ".mod_term_func", 0)				\
SECTION_FUNCTION (destructor_section,				\
		  in_destructor,				\
		  ".destructor", 0)				\
SECTION_FUNCTION (objc_class_section,				\
		  in_objc_class,				\
		  ".objc_class", 1)				\
SECTION_FUNCTION (objc_meta_class_section,			\
		  in_objc_meta_class,				\
		  ".objc_meta_class", 1)			\
SECTION_FUNCTION (objc_category_section,			\
		  in_objc_category,				\
		".objc_category", 1)				\
SECTION_FUNCTION (objc_class_vars_section,			\
		  in_objc_class_vars,				\
		  ".objc_class_vars", 1)			\
SECTION_FUNCTION (objc_instance_vars_section,			\
		  in_objc_instance_vars,			\
		  ".objc_instance_vars", 1)			\
SECTION_FUNCTION (objc_cls_meth_section,			\
		  in_objc_cls_meth,				\
		  ".objc_cls_meth", 1)				\
SECTION_FUNCTION (objc_inst_meth_section,			\
		  in_objc_inst_meth,				\
		  ".objc_inst_meth", 1)				\
SECTION_FUNCTION (objc_cat_cls_meth_section,			\
		  in_objc_cat_cls_meth,				\
		  ".objc_cat_cls_meth", 1)			\
SECTION_FUNCTION (objc_cat_inst_meth_section,			\
		  in_objc_cat_inst_meth,			\
		  ".objc_cat_inst_meth", 1)			\
SECTION_FUNCTION (objc_selector_refs_section,			\
		  in_objc_selector_refs,			\
		  ".objc_message_refs", 1)			\
SECTION_FUNCTION (objc_selector_fixup_section,				     \
		  in_objc_selector_fixup,				     \
		  ".section __OBJC, __sel_fixup, regular, no_dead_strip", 1) \
SECTION_FUNCTION (objc_symbols_section,					\
		  in_objc_symbols,					\
		  ".objc_symbols", 1)					\
SECTION_FUNCTION (objc_module_info_section,				\
		  in_objc_module_info,					\
		  ".objc_module_info", 1)				\
SECTION_FUNCTION (objc_protocol_section,				\
		  in_objc_protocol,					\
		  ".objc_protocol", 1)					\
SECTION_FUNCTION (objc_string_object_section,				\
		  in_objc_string_object,				\
		  ".objc_string_object", 1)				\
SECTION_FUNCTION (objc_constant_string_object_section,			\
		  in_objc_constant_string_object,			\
		  ".section __OBJC, __cstring_object, regular, "	\
		    "no_dead_strip", 1)					\
/* APPLE LOCAL begin constant cfstrings */	\
/* Unlike constant NSStrings, constant CFStrings do not live */\
/* in the __OBJC segment since they may also occur in pure C */\
/* or C++ programs.  */\
SECTION_FUNCTION (cfstring_constant_object_section,	\
		  in_cfstring_constant_object,	\
		  ".section __DATA, __cfstring", 0)	\
/* APPLE LOCAL end constant cfstrings */	\
/* Fix-and-Continue image marker.  */					\
SECTION_FUNCTION (objc_image_info_section,				\
                  in_objc_image_info,					\
                  ".section __OBJC, __image_info, regular, "		\
		    "no_dead_strip", 1)					\
SECTION_FUNCTION (objc_class_names_section,				\
		in_objc_class_names,					\
		".objc_class_names", 1)					\
SECTION_FUNCTION (objc_meth_var_names_section,				\
		in_objc_meth_var_names,					\
		".objc_meth_var_names", 1)				\
SECTION_FUNCTION (objc_meth_var_types_section,				\
		in_objc_meth_var_types,					\
		".objc_meth_var_types", 1)				\
SECTION_FUNCTION (objc_cls_refs_section,				\
		in_objc_cls_refs,					\
		".objc_cls_refs", 1)					\
\
SECTION_FUNCTION (machopic_lazy_symbol_ptr_section,			\
		in_machopic_lazy_symbol_ptr,				\
		".lazy_symbol_pointer", 0)				\
/* APPLE LOCAL begin dynamic-no-pic */					\
SECTION_FUNCTION (machopic_lazy_symbol_ptr2_section,	\
		in_machopic_lazy_symbol_ptr2,		\
		".section __DATA, __la_sym_ptr2,lazy_symbol_pointers", 0)      	\
SECTION_FUNCTION (machopic_lazy_symbol_ptr3_section,	\
		in_machopic_lazy_symbol_ptr3,		\
		".section __DATA, __la_sym_ptr3,lazy_symbol_pointers", 0)      	\
/* APPLE LOCAL end dynamic-no-pic */					\
/* APPLE LOCAL begin AT&T-style stub 4164563 */				\
SECTION_FUNCTION (machopic_nl_symbol_ptr_section,			\
		in_machopic_nl_symbol_ptr,				\
		MACHOPIC_NL_SYMBOL_PTR_SECTION, 0)	\
/* APPLE LOCAL end AT&T-style stub 4164563 */				\
SECTION_FUNCTION (machopic_symbol_stub_section,				\
		in_machopic_symbol_stub,				\
		".symbol_stub", 0)					\
SECTION_FUNCTION (machopic_symbol_stub1_section,			\
		in_machopic_symbol_stub1,				\
		".section __TEXT,__symbol_stub1,symbol_stubs,"		\
		  "pure_instructions,16", 0)				\
SECTION_FUNCTION (machopic_picsymbol_stub_section,			\
		in_machopic_picsymbol_stub,				\
		".picsymbol_stub", 0)					\
SECTION_FUNCTION (machopic_picsymbol_stub1_section,			\
		in_machopic_picsymbol_stub1,				\
		".section __TEXT,__picsymbolstub1,symbol_stubs,"	\
		  "pure_instructions,32", 0)				\
/* APPLE LOCAL begin dynamic-no-pic */			\
SECTION_FUNCTION (machopic_picsymbol_stub2_section,	\
		in_machopic_picsymbol_stub2,		\
		".section __TEXT,__picsymbolstub2,symbol_stubs,pure_instructions,25", 0)      		\
/* APPLE LOCAL end dynamic-no-pic */			\
/* APPLE LOCAL begin AT&T-style stub 4164563 */				\
SECTION_FUNCTION (machopic_picsymbol_stub3_section,	\
		in_machopic_picsymbol_stub3,		\
		".section __IMPORT,__jump_table,symbol_stubs,self_modifying_code+pure_instructions,5", 0) \
/* APPLE LOCAL end AT&T-style stub 4164563 */				\
SECTION_FUNCTION (darwin_exception_section,				\
		in_darwin_exception,					\
		".section __DATA,__gcc_except_tab", 0)			\
SECTION_FUNCTION (darwin_eh_frame_section,				\
		in_darwin_eh_frame,					\
		".section " EH_FRAME_SECTION_NAME ",__eh_frame"		\
		  EH_FRAME_SECTION_ATTR, 0)				\
/* APPLE LOCAL begin ObjC new abi */					\
SECTION_FUNCTION (objc_classlist_section,				\
		  in_objc_classlist_section,				\
		  ".section __OBJC, __classlist, regular, no_dead_strip", 1) 		\
SECTION_FUNCTION (objc_data_section,					\
		  in_data,						\
		  ".data", 1) 						\
SECTION_FUNCTION (objc_message_refs_section,				\
		  in_objc_message_refs_section,				\
		  ".section __OBJC2, __message_refs, regular, no_dead_strip", 1)	\
/* APPLE LOCAL end ObjC new abi */					\
\
static void					\
objc_section_init (void)			\
{						\
  static int been_here = 0;			\
						\
  if (been_here == 0)				\
    {						\
      been_here = 1;				\
          /* written, cold -> hot */		\
      objc_cat_cls_meth_section ();		\
      objc_cat_inst_meth_section ();		\
      objc_string_object_section ();		\
      objc_constant_string_object_section ();	\
      objc_selector_refs_section ();		\
      objc_selector_fixup_section ();		\
      objc_cls_refs_section ();			\
      objc_class_section ();			\
      objc_meta_class_section ();		\
          /* shared, hot -> cold */		\
      objc_cls_meth_section ();			\
      objc_inst_meth_section ();		\
      objc_protocol_section ();			\
      objc_class_names_section ();		\
      objc_meth_var_types_section ();		\
      objc_meth_var_names_section ();		\
      objc_category_section ();			\
      objc_class_vars_section ();		\
      objc_instance_vars_section ();		\
      objc_module_info_section ();		\
      objc_symbols_section ();			\
    }						\
}

#define READONLY_DATA_SECTION const_section

#undef	TARGET_ASM_SELECT_SECTION
#define TARGET_ASM_SELECT_SECTION machopic_select_section
#define USE_SELECT_SECTION_FOR_FUNCTIONS

#undef	TARGET_ASM_SELECT_RTX_SECTION
#define TARGET_ASM_SELECT_RTX_SECTION machopic_select_rtx_section
#undef  TARGET_ASM_UNIQUE_SECTION
#define TARGET_ASM_UNIQUE_SECTION darwin_unique_section
#undef  TARGET_ASM_FUNCTION_RODATA_SECTION
#define TARGET_ASM_FUNCTION_RODATA_SECTION default_no_function_rodata_section


#define ASM_DECLARE_UNRESOLVED_REFERENCE(FILE,NAME)			\
    do {								\
	 if (FILE) {							\
	   if (MACHOPIC_INDIRECT)					\
	     fprintf (FILE, "\t.lazy_reference ");			\
	   else								\
	     fprintf (FILE, "\t.reference ");				\
	   assemble_name (FILE, NAME);					\
	   fprintf (FILE, "\n");					\
	 }                                                              \
       } while (0)

#define ASM_DECLARE_CLASS_REFERENCE(FILE,NAME)				\
    do {								\
	 if (FILE) {							\
	   fprintf (FILE, "\t");					\
	   assemble_name (FILE, NAME);					\
	   fprintf (FILE, "=0\n");					\
	   (*targetm.asm_out.globalize_label) (FILE, NAME);		\
	 }								\
       } while (0)

/* Globalizing directive for a label.  */
#define GLOBAL_ASM_OP ".globl "
#define TARGET_ASM_GLOBALIZE_LABEL darwin_globalize_label

/* APPLE LOCAL begin weak definition */
#define ASM_WEAK_DEFINITIONIZE_LABEL(FILE,  NAME)                       \
 do { const char* _x = (NAME); if (!!strncmp (_x, "_OBJC_", 6)) {	\
  fputs (".weak_definition ", FILE); assemble_name (FILE, _x);		\
  fputs ("\n", FILE); }} while (0)
/* APPLE LOCAL end weak definition */

/* Emit an assembler directive to set visibility for a symbol.  Used
   to support visibility attribute and Darwin's private extern
   feature.  */
#undef TARGET_ASM_ASSEMBLE_VISIBILITY
#define TARGET_ASM_ASSEMBLE_VISIBILITY darwin_assemble_visibility

/* Extra attributes for Darwin.  */
#define SUBTARGET_ATTRIBUTE_TABLE					     \
  /* { name, min_len, max_len, decl_req, type_req, fn_type_req, handler } */ \
  /* APPLE LOCAL begin KEXT double destructor */			     \
  { "apple_kext_compatibility", 0, 0, false, true, false,		     \
    darwin_handle_odd_attribute },					     \
  /* APPLE LOCAL end KEXT double destructor */				     \
  /* APPLE LOCAL ObjC GC */						     \
  { "objc_gc", 1, 1, false, true, false, darwin_handle_objc_gc_attribute },  \
  { "weak_import", 0, 0, true, false, false,				     \
    darwin_handle_weak_import_attribute }

#undef ASM_GENERATE_INTERNAL_LABEL
#define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM)	\
  sprintf (LABEL, "*%s%ld", PREFIX, (long)(NUM))

#undef TARGET_ASM_MARK_DECL_PRESERVED
#define TARGET_ASM_MARK_DECL_PRESERVED darwin_mark_decl_preserved

/* Set on a symbol with SYMBOL_FLAG_FUNCTION or
   MACHO_SYMBOL_FLAG_VARIABLE to indicate that the function or
   variable has been defined in this translation unit.  */

#define MACHO_SYMBOL_FLAG_VARIABLE (SYMBOL_FLAG_MACH_DEP)
#define MACHO_SYMBOL_FLAG_DEFINED ((SYMBOL_FLAG_MACH_DEP) << 1)

/* Set on a symbol to indicate when fix-and-continue style code
   generation is being used and the symbol refers to a static symbol
   that should be rebound from new instances of a translation unit to
   the original instance of the data.  */

#define MACHO_SYMBOL_STATIC ((SYMBOL_FLAG_MACH_DEP) << 2)

/* Symbolic names for various things we might know about a symbol.  */

enum machopic_addr_class {
  MACHOPIC_UNDEFINED,
  MACHOPIC_DEFINED_DATA,
  MACHOPIC_UNDEFINED_DATA,
  MACHOPIC_DEFINED_FUNCTION,
  MACHOPIC_UNDEFINED_FUNCTION
};

/* Macros defining the various PIC cases.  */

#define MACHO_DYNAMIC_NO_PIC_P	(TARGET_DYNAMIC_NO_PIC)
/* APPLE LOCAL begin mach-o cleanup */
#undef MACHOPIC_INDIRECT
#define MACHOPIC_INDIRECT	(flag_pic || MACHO_DYNAMIC_NO_PIC_P)
#define MACHOPIC_JUST_INDIRECT	(flag_pic == 1 || MACHO_DYNAMIC_NO_PIC_P)
#undef MACHOPIC_PURE
#define MACHOPIC_PURE		(flag_pic == 2 && ! MACHO_DYNAMIC_NO_PIC_P)
/* APPLE LOCAL end mach-o cleanup */
#undef TARGET_ENCODE_SECTION_INFO
#define TARGET_ENCODE_SECTION_INFO  darwin_encode_section_info
#undef TARGET_STRIP_NAME_ENCODING
#define TARGET_STRIP_NAME_ENCODING  default_strip_name_encoding

/* APPLE LOCAL begin what is this for? */
/* Be conservative and always redo the encoding.  */

#define REDO_SECTION_INFO_P(DECL) (1)
/* APPLE LOCAL end what is this for? */

#define GEN_BINDER_NAME_FOR_STUB(BUF,STUB,STUB_LENGTH)		\
  do {								\
    const char *const stub_ = (STUB);				\
    char *buffer_ = (BUF);					\
    strcpy (buffer_, stub_);					\
    if (stub_[0] == '"')					\
      {								\
	strcpy (buffer_ + (STUB_LENGTH) - 1, "_binder\"");	\
      }								\
    else							\
      {								\
	strcpy (buffer_ + (STUB_LENGTH), "_binder");		\
      }								\
  } while (0)

#define GEN_SYMBOL_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH)	\
  do {								\
    const char *const symbol_ = (SYMBOL);			\
    char *buffer_ = (BUF);					\
    if (name_needs_quotes (symbol_) && symbol_[0] != '"')	\
      {								\
	  sprintf (buffer_, "\"%s\"", symbol_);			\
      }								\
    else							\
      {								\
	strcpy (buffer_, symbol_);				\
      }								\
  } while (0)

/* Given a symbol name string, create the lazy pointer version
   of the symbol name.  */

#define GEN_LAZY_PTR_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH)	\
  do {								\
    const char *symbol_ = (SYMBOL);                             \
    char *buffer_ = (BUF);					\
    if (symbol_[0] == '"')					\
      {								\
        strcpy (buffer_, "\"L");				\
        strcpy (buffer_ + 2, symbol_ + 1);			\
	strcpy (buffer_ + (SYMBOL_LENGTH), "$lazy_ptr\"");	\
      }								\
    else if (name_needs_quotes (symbol_))			\
      {								\
        strcpy (buffer_, "\"L");				\
        strcpy (buffer_ + 2, symbol_);				\
	strcpy (buffer_ + (SYMBOL_LENGTH) + 2, "$lazy_ptr\"");	\
      }								\
    else							\
      {								\
        strcpy (buffer_, "L");					\
        strcpy (buffer_ + 1, symbol_);				\
	strcpy (buffer_ + (SYMBOL_LENGTH) + 1, "$lazy_ptr");	\
      }								\
  } while (0)

#define TARGET_ASM_EXCEPTION_SECTION darwin_exception_section

#define TARGET_ASM_EH_FRAME_SECTION darwin_eh_frame_section

#define EH_FRAME_SECTION_NAME   "__TEXT"
#define EH_FRAME_SECTION_ATTR ",coalesced,no_toc+strip_static_syms+live_support"

/* Java runtime class list.  */
#define JCR_SECTION_NAME "__DATA,jcr,regular,no_dead_strip"

#undef ASM_PREFERRED_EH_DATA_FORMAT
#define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL)  \
  (((CODE) == 2 && (GLOBAL) == 1) \
   ? (DW_EH_PE_pcrel | DW_EH_PE_indirect | DW_EH_PE_sdata4) : \
     ((CODE) == 1 || (GLOBAL) == 0) ? DW_EH_PE_pcrel : DW_EH_PE_absptr)

#define ASM_OUTPUT_DWARF_DELTA(FILE,SIZE,LABEL1,LABEL2)  \
  darwin_asm_output_dwarf_delta (FILE, SIZE, LABEL1, LABEL2)

/* APPLE LOCAL begin mainline 2006-03-16 dwarf 4383509 */
#define ASM_OUTPUT_DWARF_OFFSET(FILE,SIZE,LABEL,BASE)  \
  darwin_asm_output_dwarf_offset (FILE, SIZE, LABEL, BASE)

/* APPLE LOCAL end mainline 2006-03-16 dwarf 4383509 */

/* Experimentally, putting jump tables in text is faster on SPEC.
   Also this is needed for correctness for coalesced functions.  */

#ifndef JUMP_TABLES_IN_TEXT_SECTION
#define JUMP_TABLES_IN_TEXT_SECTION 1
#endif

/* APPLE LOCAL begin OS pragma hook */
#define REGISTER_OS_PRAGMAS()			\
  do {								\
    /* APPLE LOCAL begin Macintosh alignment 2002-1-22 --ff */  \
    c_register_pragma (0, "pack", darwin_pragma_pack);  \
    /* APPLE LOCAL end Macintosh alignment 2002-1-22 --ff */  \
    /* APPLE LOCAL begin CALL_ON_LOAD/CALL_ON_UNLOAD pragmas  20020202 --turly  */ \
    c_register_pragma (0, "CALL_ON_LOAD", darwin_pragma_call_on_load); \
    c_register_pragma (0, "CALL_ON_UNLOAD", darwin_pragma_call_on_unload); \
    /* APPLE LOCAL end CALL_ON_LOAD/CALL_ON_UNLOAD pragmas  20020202 --turly  */ \
  } while (0)
/* APPLE LOCAL end OS pragma hook */

#define TARGET_TERMINATE_DW2_EH_FRAME_INFO false

#undef TARGET_ASM_NAMED_SECTION
#define TARGET_ASM_NAMED_SECTION darwin_asm_named_section

#define DARWIN_REGISTER_TARGET_PRAGMAS()			\
  do {								\
    c_register_pragma (0, "mark", darwin_pragma_ignore);	\
    c_register_pragma (0, "options", darwin_pragma_options);	\
    c_register_pragma (0, "segment", darwin_pragma_ignore);	\
    /* APPLE LOCAL pragma fenv */                               \
    c_register_pragma ("GCC", "fenv", darwin_pragma_fenv);	\
    c_register_pragma (0, "unused", darwin_pragma_unused);	\
    /* APPLE LOCAL begin mainline */				\
    c_register_pragma (0, "ms_struct",				\
			darwin_pragma_ms_struct);		\
    /* APPLE LOCAL end mainline */				\
    /* APPLE LOCAL begin pragma reverse_bitfields */		\
    c_register_pragma (0, "reverse_bitfields",			\
			darwin_pragma_reverse_bitfields);	\
    /* APPLE LOCAL end pragma reverse_bitfields */		\
    /* APPLE LOCAL begin optimization pragmas 3124235/3420242 */\
    c_register_pragma (0, "optimization_level",			\
			darwin_pragma_opt_level);		\
    c_register_pragma (0, "optimize_for_size",			\
			darwin_pragma_opt_size);		\
    c_register_pragma ("GCC", "optimization_level",		\
			darwin_pragma_opt_level);		\
    c_register_pragma ("GCC", "optimize_for_size",		\
			darwin_pragma_opt_size);		\
    /* APPLE LOCAL end optimization pragmas 3124235/3420242 */	\
    /* APPLE LOCAL begin too many changes confuse diff */	\
  } while (0)
/* APPLE LOCAL end too many changes confuse diff */

/* APPLE LOCAL begin insert assembly ".abort" directive on fatal error   */
#define EXIT_FROM_FATAL_DIAGNOSTIC(status) abort_assembly_and_exit (status)
extern void abort_assembly_and_exit (int status) ATTRIBUTE_NORETURN;
/* APPLE LOCAL end insert assembly ".abort" directive on fatal error   */

/* APPLE LOCAL begin Macintosh alignment 2002-2-13 --ff */
#ifdef RS6000_VECTOR_ALIGNMENT
/* When adjusting (lowering) the alignment of fields when in the
   mac68k alignment mode, the 128-bit alignment of vectors *MUST*
   be preserved.  */
#define PEG_ALIGN_FOR_MAC68K(DESIRED)           \
        ((TARGET_ALTIVEC && (DESIRED) == RS6000_VECTOR_ALIGNMENT) \
         ? RS6000_VECTOR_ALIGNMENT              \
         : MIN ((DESIRED), 16))
#else
#define PEG_ALIGN_FOR_MAC68K(DESIRED)   MIN ((DESIRED), 16)
#endif 
/* APPLE LOCAL end Macintosh alignment 2002-2-13 --ff */

/* APPLE LOCAL begin KEXT double destructor */
/* Need a mechanism to tell whether a C++ operator delete is empty so
   we overload TREE_SIDE_EFFECTS here (it is unused for FUNCTION_DECLS.)
   Fromage, c'est moi!  */
#define CHECK_TRIVIAL_FUNCTION(DECL)					\
    do {								\
      const char *_name = IDENTIFIER_POINTER (DECL_NAME (DECL));	\
      if (flag_apple_kext && DECL_SAVED_TREE (DECL)			\
	  && strstr (_name, "operator delete")				\
	  && TREE_CODE (DECL_SAVED_TREE (DECL)) == COMPOUND_STMT	\
	  && compound_body_is_empty_p (					\
				COMPOUND_BODY (DECL_SAVED_TREE (DECL))))\
	  TREE_SIDE_EFFECTS (DECL) = 1;					\
    } while (0)

/* gcc3 initialises the vptr field of all objects so that it points at the
   first virtual function slot, NOT the base address of the vtable proper.
   This is different from gcc2.95 which always initialised the vptr to
   point at the base address of the vtable.  The difference here is 8 bytes.
   So, for 2.95 compatibility, we need to:

     (1) subtract 8 from the vptr initialiser, and
     (2) add 2 to every vfunc index.  (2 * 4 == 8.)

   This is getting ever cheesier.  */

#define VPTR_INITIALIZER_ADJUSTMENT	8
#define ADJUST_VTABLE_INDEX(IDX, VTBL)					\
    do {								\
      if (flag_apple_kext)						\
	(IDX) = fold (build2 (PLUS_EXPR, TREE_TYPE (IDX), IDX, size_int (2))); \
    } while (0)
/* APPLE LOCAL end KEXT double destructor */

/* APPLE LOCAL begin zerofill 20020218 --turly  */
/* This keeps uninitialized data from bloating the data when -fno-common.
   Radar 2863107.  */
#define ASM_OUTPUT_ZEROFILL(FILE, NAME, SIZE, ALIGNMENT)		    \
  do {									    \
    unsigned HOST_WIDE_INT _new_size = SIZE;		    		    \
    if (_new_size == 0) _new_size = 1;					    \
    fputs (".zerofill __DATA, __common, ", (FILE));			    \
    assemble_name ((FILE), (NAME));					    \
    fprintf ((FILE), ", " HOST_WIDE_INT_PRINT_DEC, _new_size); 		    \
    fprintf ((FILE), ", " HOST_WIDE_INT_PRINT_DEC "\n",			    \
	     (HOST_WIDE_INT) (ALIGNMENT));				    \
    in_section = no_section;						    \
  } while (0)
/* APPLE LOCAL end zerofill 20020218 --turly  */

#undef ASM_APP_ON
#define ASM_APP_ON ""
#undef ASM_APP_OFF
#define ASM_APP_OFF ""

void darwin_register_frameworks (const char *, const char *, int);
void darwin_register_objc_includes (const char *, const char *, int);
#define TARGET_EXTRA_PRE_INCLUDES darwin_register_objc_includes
#define TARGET_EXTRA_INCLUDES darwin_register_frameworks

void add_framework_path (char *);
#define TARGET_OPTF add_framework_path

#define TARGET_HAS_F_SETLKW

/* APPLE LOCAL begin mainline 2005-09-01 3449986 */
/* All new versions of Darwin have C99 functions.  */
#define TARGET_C99_FUNCTIONS 1

/* APPLE LOCAL end mainline 2005-09-01 3449986 */
/* APPLE LOCAL begin KEXT ctors return this */
/* For Apple KEXTs, we make the constructors return this to match gcc
   2.95.  */
#define TARGET_CXX_CDTOR_RETURNS_THIS (flag_apple_kext_p)
/* APPLE LOCAL end KEXT ctors return this */

#define WINT_TYPE "int"

#endif /* CONFIG_DARWIN_H */