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/* Target definitions for Darwin (Mac OS X) systems.

   Copyright (C) 1989, 1990, 1991, 1992, 1993, 2000, 2001, 2002, 2003, 2004,

   2005, 2007

   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 3, 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, 51 Franklin Street, Fifth Floor,

Boston, MA 02110-1301, 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

/* 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

/* True if pragma ms_struct is in effect.  */

extern GTY(()) int darwin_ms_struct;

/* 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 \

  { "-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" }, \

  { "-seg_addr_table_filename", "-Zfn_seg_addr_table_filename" }, \

  { "-fapple-kext", "-fapple-kext -static -Wa,-static" }, \

  { "-filelist", "-Xlinker -filelist -Xlinker" },  \

  { "-findirect-virtual-calls", "-fapple-kext" }, \

  { "-flat_namespace", "-Zflat_namespace" },  \

  { "-force_cpusubtype_ALL", "-Zforce_cpusubtype_ALL" },  \

  { "-force_flat_namespace", "-Zforce_flat_namespace" },  \

  { "-framework", "-Xlinker -framework -Xlinker" },  \

  { "-fterminated-vtables", "-fapple-kext" }, \

  { "-image_base", "-Zimage_base" },  \

  { "-init", "-Zinit" },  \

  { "-install_name", "-Zinstall_name" },  \

  { "-mkernel", "-mkernel -static -Wa,-static" }, \

  { "-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" }, \

  SUBTARGET_OPTION_TRANSLATE_TABLE

#define SUBSUBTARGET_OVERRIDE_OPTIONS                                   \

  do {                                                                  \

    darwin_override_options ();                                         \

  } while (0)

/* 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 :       \

   !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)

#define SUBTARGET_C_COMMON_OVERRIDE_OPTIONS do {                        \

    if (flag_mkernel || flag_apple_kext)                                \

      {                                                                 \

        if (flag_use_cxa_atexit == 2)                                   \

          flag_use_cxa_atexit = 0;                                       \

        /* kexts should always be built without the coalesced sections  \

           because the kernel loader doesn't grok such sections.  */    \

        flag_weak = 0;                                                   \

        /* No RTTI in kexts.  */                                        \

        flag_rtti = 0;                                                   \

      }                                                                 \

  } while (0)

/* Machine dependent cpp options.  Don't add more options here, add

   them to darwin_cpp_builtins in darwin-c.c.  */

#undef  CPP_SPEC

#define CPP_SPEC "%{static:%{!dynamic:-D__STATIC__}}%{!static:-D__DYNAMIC__}" \

        " %{pthread:-D_REENTRANT}"

/* 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}} \

    %{!A:%{!nostdlib:%{!nostartfiles:%S}}} \

    %{L*} %{fopenmp:%:include(libgomp.spec)%(link_gomp)}   \

    %(link_libgcc) %o %{fprofile-arcs|fprofile-generate|coverage:-lgcov} \

    %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %G %L}} \

    %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} %{F*} }}}}}}}}"

#ifdef TARGET_SYSTEM_ROOT

#define LINK_SYSROOT_SPEC \

  "%{isysroot*:-syslibroot %*;:-syslibroot " TARGET_SYSTEM_ROOT "}"

#else

#define LINK_SYSROOT_SPEC "%{isysroot*:-syslibroot %*}"

#endif

/* 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 %*} \

   %{mmacosx-version-min=*:-macosx_version_min %*} \

   %{!mmacosx-version-min=*:%{shared-libgcc:-macosx_version_min 10.3}} \

   %{nomultidefs} \

   %{Zmulti_module:-multi_module} %{Zsingle_module:-single_module} \

   %{Zmultiply_defined*:-multiply_defined %*} \

   %{!Zmultiply_defined*:%{shared-libgcc: \

     %:version-compare(< 10.5 mmacosx-version-min= -multiply_defined) \

     %:version-compare(< 10.5 mmacosx-version-min= suppress)}} \

   %{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 %*} \

   %{Zfn_seg_addr_table_filename*:-seg_addr_table_filename %*} \

   %{sub_library*} %{sub_umbrella*} \

   " LINK_SYSROOT_SPEC " \

   %{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} "

/* Machine dependent libraries.  */

#define LIB_SPEC "%{!static:-lSystem}"

/* 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                                                   \

   "%{static-libgcc|static: -lgcc_eh -lgcc;                                \

      shared-libgcc|fexceptions|fgnu-runtime:                              \

       %: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}"

/* 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)}"

/* 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.  */

#define ASM_SPEC "-arch %(darwin_arch) \

  %{Zforce_cpusubtype_ALL:-force_cpusubtype_ALL}"

/* We use Dbx symbol format.  */

#define DBX_DEBUGGING_INFO 1

/* Also enable Dwarf 2 as an option.  */

#define DWARF2_DEBUGGING_INFO

#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG

#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"

/* 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 (0, "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

/* 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

/* 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.

   Unfortunately, it also requires that 'debug' sections don't contain

   labels.  */

#undef FRAME_BEGIN_LABEL

#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

/* Emit a label to separate the exception table.  */

#define TARGET_ASM_EMIT_EXCEPT_TABLE_LABEL darwin_emit_except_table_label

/* 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

#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);                 \

           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);                                        \

         }                                                                   \

       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);                                        \

       else if (xname[0] != '"' && name_needs_quotes (xname))                 \

         fprintf (FILE, "\"%s\"", xname);                                    \

       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 {                                                                  \

    unsigned HOST_WIDE_INT _new_size = SIZE;                            \

    fputs (".lcomm ", (FILE));                                          \

    assemble_name ((FILE), (NAME));                                     \

    if (_new_size == 0) _new_size = 1;                                   \

    fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED",%u\n", _new_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 in

   bits.  For Mach-O, this is 2^15 bytes.  */

#undef  MAX_OFILE_ALIGNMENT

#define MAX_OFILE_ALIGNMENT (0x8000 * 8)

/* Declare the section variables.  */

#ifndef USED_FOR_TARGET

enum darwin_section_enum {

#define DEF_SECTION(NAME, FLAGS, DIRECTIVE, OBJC) NAME,

#include "darwin-sections.def"