/* Target definitions for Darwin (Mac OS X) systems.
- Copyright (C) 1989, 1990, 1991, 1992, 1993, 2000, 2001, 2002, 2003, 2004,
- 2005, 2006, 2007, 2008, 2009, 2010, 2011
- Free Software Foundation, Inc.
+ Copyright (C) 1989-2017 Free Software Foundation, Inc.
Contributed by Apple Computer Inc.
This file is part of GCC.
/* Default to using the NeXT-style runtime, since that's what is
pre-installed on Darwin systems. */
-#define NEXT_OBJC_RUNTIME
+#define NEXT_OBJC_RUNTIME 1
/* Don't default to pcc-struct-return, because gcc is the only compiler, and
we want to retain compatibility with older gcc versions. */
} while (0)
#define SUBTARGET_C_COMMON_OVERRIDE_OPTIONS do { \
- /* Unless set, force ABI=2 for NeXT and m64, 0 otherwise. */ \
- if (!global_options_set.x_flag_objc_abi) \
- global_options.x_flag_objc_abi \
- = (flag_next_runtime && TARGET_64BIT) ? 2 : 0; \
- /* Objective-C family ABI 2 is only valid for next/m64 at present. */ \
- if (global_options_set.x_flag_objc_abi && flag_next_runtime) \
- if (TARGET_64BIT && global_options.x_flag_objc_abi < 2) \
- error_at (UNKNOWN_LOCATION, "%<-fobjc-abi-version%> >= 2 is only" \
- " supported on %<-m64%> targets for" \
- " %<-fnext-runtime%>"); \
- /* Sort out ObjC exceptions: If the runtime is NeXT we default to \
- sjlj for m32 only. */ \
- if (!global_options_set.x_flag_objc_sjlj_exceptions) \
- global_options.x_flag_objc_sjlj_exceptions = \
- flag_next_runtime && !TARGET_64BIT; \
if (flag_mkernel || flag_apple_kext) \
{ \
if (flag_use_cxa_atexit == 2) \
specifying the handling of options understood by generic Unix
linkers, and for positional arguments like libraries. */
+#if LD64_HAS_EXPORT_DYNAMIC
+#define DARWIN_EXPORT_DYNAMIC " %{rdynamic:-export_dynamic}"
+#else
+#define DARWIN_EXPORT_DYNAMIC " %{rdynamic: %nrdynamic is not supported}"
+#endif
+
#define LINK_COMMAND_SPEC_A \
"%{!fdump=*:%{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
- %(linker) \
- %{flto*:%<fcompare-debug*} \
+ %(linker)" \
+ LINK_PLUGIN_SPEC \
+ "%{flto*:%<fcompare-debug*} \
%{flto*} \
- %l %X %{s} %{t} %{Z} %{u*} \
+ %l " LINK_COMPRESS_DEBUG_SPEC \
+ "%X %{s} %{t} %{Z} %{u*} \
%{e*} %{r} \
%{o*}%{!o:-o a.out} \
%{!nostdlib:%{!nostartfiles:%S}} \
%{L*} %(link_libgcc) %o %{fprofile-arcs|fprofile-generate*|coverage:-lgcov} \
- %{fopenmp|ftree-parallelize-loops=*: \
+ %{fopenacc|fopenmp|%:gt(%{ftree-parallelize-loops=*:%*} 1): \
%{static|static-libgcc|static-libstdc++|static-libgfortran: libgomp.a%s; : -lgomp } } \
+ %{fcilkplus:%:include(libcilkrts.spec)%(link_cilkrts)}\
+ %{fgnu-tm: \
+ %{static|static-libgcc|static-libstdc++|static-libgfortran: libitm.a%s; : -litm } } \
%{!nostdlib:%{!nodefaultlibs:\
- %(link_ssp) %(link_gcc_c_sequence)\
+ %{%:sanitize(address): -lasan } \
+ %{%:sanitize(undefined): -lubsan } \
+ %(link_ssp) \
+ " DARWIN_EXPORT_DYNAMIC " %<rdynamic \
+ %(link_gcc_c_sequence) \
}}\
%{!nostdlib:%{!nostartfiles:%E}} %{T*} %{F*} }}}}}}}"
#undef LINK_GCC_C_SEQUENCE_SPEC
#define LINK_GCC_C_SEQUENCE_SPEC "%G %L"
-#ifdef TARGET_SYSTEM_ROOT
-#define LINK_SYSROOT_SPEC \
- "%{isysroot*:-syslibroot %*;:-syslibroot " TARGET_SYSTEM_ROOT "}"
-#else
+/* ld64 supports a sysroot, it just has a different name and there's no easy
+ way to check for it at config time. */
+#undef HAVE_LD_SYSROOT
+#define HAVE_LD_SYSROOT 1
+/* It seems the only (working) way to get a space after %R is to append a
+ dangling '/'. */
+#define SYSROOT_SPEC "%{!isysroot*:-syslibroot %R/ }"
+
+/* Do the same as clang, for now, and insert the sysroot for ld when an
+ isysroot is specified. */
#define LINK_SYSROOT_SPEC "%{isysroot*:-syslibroot %*}"
-#endif
+
+/* Suppress the addition of extra prefix paths when a sysroot is in use. */
+#define STANDARD_STARTFILE_PREFIX_1 ""
+#define STANDARD_STARTFILE_PREFIX_2 ""
+
+#define DARWIN_PIE_SPEC "%{fpie|pie|fPIE:}"
/* Please keep the random linker options in alphabetical order (modulo
'Z' and 'no' prefixes). Note that options taking arguments may appear
%{headerpad_max_install_names} \
%{Zimage_base*:-image_base %*} \
%{Zinit*:-init %*} \
- %{!mmacosx-version-min=*:-macosx_version_min %(darwin_minversion)} \
%{mmacosx-version-min=*:-macosx_version_min %*} \
%{nomultidefs} \
%{Zmulti_module:-multi_module} %{Zsingle_module:-single_module} \
%:version-compare(< 10.5 mmacosx-version-min= -multiply_defined) \
%:version-compare(< 10.5 mmacosx-version-min= suppress)}} \
%{Zmultiplydefinedunused*:-multiply_defined_unused %*} \
- %{fpie:-pie} \
+ " DARWIN_PIE_SPEC " \
%{prebind} %{noprebind} %{nofixprebinding} %{prebind_all_twolevel_modules} \
%{read_only_relocs} \
%{sectcreate*} %{sectorder*} %{seg1addr*} %{segprot*} \
#undef STARTFILE_SPEC
#define STARTFILE_SPEC \
- "%{Zdynamiclib: %(darwin_dylib1) } \
- %{!Zdynamiclib:%{Zbundle:%{!static:-lbundle1.o}} \
+ "%{Zdynamiclib: %(darwin_dylib1) %{fgnu-tm: -lcrttms.o}} \
+ %{!Zdynamiclib:%{Zbundle:%{!static: \
+ %:version-compare(< 10.6 mmacosx-version-min= -lbundle1.o) \
+ %{fgnu-tm: -lcrttms.o}}} \
%{!Zbundle:%{pg:%{static:-lgcrt0.o} \
%{!static:%{object:-lgcrt0.o} \
%{!object:%{preload:-lgcrt0.o} \
- %{!preload:-lgcrt1.o %(darwin_crt2)}}}} \
+ %{!preload:-lgcrt1.o \
+ %:version-compare(>= 10.8 mmacosx-version-min= -no_new_main) \
+ %(darwin_crt2)}}}} \
%{!pg:%{static:-lcrt0.o} \
%{!static:%{object:-lcrt0.o} \
%{!object:%{preload:-lcrt0.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 "" */
+/* We want a destructor last in the list. */
+#define TM_DESTRUCTOR "%{fgnu-tm: -lcrttme.o}"
+#define ENDFILE_SPEC TM_DESTRUCTOR
#define DARWIN_EXTRA_SPECS \
{ "darwin_crt1", DARWIN_CRT1_SPEC }, \
- { "darwin_dylib1", DARWIN_DYLIB1_SPEC }, \
- { "darwin_minversion", DARWIN_MINVERSION_SPEC },
+ { "darwin_dylib1", DARWIN_DYLIB1_SPEC },
#define DARWIN_DYLIB1_SPEC \
"%:version-compare(!> 10.5 mmacosx-version-min= -ldylib1.o) \
- %:version-compare(>= 10.5 mmacosx-version-min= -ldylib1.10.5.o)"
+ %:version-compare(>< 10.5 10.6 mmacosx-version-min= -ldylib1.10.5.o)"
#define DARWIN_CRT1_SPEC \
"%:version-compare(!> 10.5 mmacosx-version-min= -lcrt1.o) \
- %:version-compare(>= 10.5 mmacosx-version-min= -lcrt1.10.5.o)"
+ %:version-compare(>< 10.5 10.6 mmacosx-version-min= -lcrt1.10.5.o) \
+ %:version-compare(>< 10.6 10.8 mmacosx-version-min= -lcrt1.10.6.o) \
+ %{fgnu-tm: -lcrttms.o}"
+
+#ifdef HAVE_AS_MMACOSX_VERSION_MIN_OPTION
+/* Emit macosx version (but only major). */
+#define ASM_MMACOSX_VERSION_MIN_SPEC \
+ " %{asm_macosx_version_min=*: -mmacosx-version-min=%*} %<asm_macosx_version_min=*"
+#else
+#define ASM_MMACOSX_VERSION_MIN_SPEC " %<asm_macosx_version_min=*"
+#endif
-/* Default Darwin ASM_SPEC, very simple. */
+/* When we detect that we're cctools or llvm as, we need to insert the right
+ additional options. */
+#if HAVE_GNU_AS
+#define ASM_OPTIONS ""
+#else
+#define ASM_OPTIONS "%{v} %{w:-W} %{I*}"
+#endif
+
+/* Default Darwin ASM_SPEC, very simple. */
#define ASM_SPEC "-arch %(darwin_arch) \
+ " ASM_OPTIONS " \
%{Zforce_cpusubtype_ALL:-force_cpusubtype_ALL} \
- %{static}"
+ %{static}" ASM_MMACOSX_VERSION_MIN_SPEC
+
+/* Default ASM_DEBUG_SPEC. Darwin's as cannot currently produce dwarf
+ debugging data. */
-/* We still allow output of STABS. */
+#define ASM_DEBUG_SPEC "%{g*:%{!g0:%{!gdwarf*:--gstabs}}}"
+/* We still allow output of STABS if the assembler supports it. */
+#ifdef HAVE_AS_STABS_DIRECTIVE
#define DBX_DEBUGGING_INFO 1
+#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
+#endif
#define DWARF2_DEBUGGING_INFO 1
-#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_PUBTYPES_SECTION "__DWARF,__debug_pubtypes,regular,debug"
#define DEBUG_STR_SECTION "__DWARF,__debug_str,regular,debug"
#define DEBUG_RANGES_SECTION "__DWARF,__debug_ranges,regular,debug"
+#define DEBUG_MACRO_SECTION "__DWARF,__debug_macro,regular,debug"
#define TARGET_WANT_DEBUG_PUB_SECTIONS true
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 NO_PROFILE_COUNTERS 1
#undef INIT_SECTION_ASM_OP
-#define INIT_SECTION_ASM_OP
+#define INIT_SECTION_ASM_OP ""
#undef INVOKE__main
#define TARGET_ASM_LTO_END darwin_asm_lto_end
#define ASM_OUTPUT_SKIP(FILE,SIZE) \
- fprintf (FILE, "\t.space "HOST_WIDE_INT_PRINT_UNSIGNED"\n", SIZE)
+ fprintf (FILE, "\t.space " HOST_WIDE_INT_PRINT_UNSIGNED"\n", SIZE)
/* Give ObjC methods pretty symbol names. */
fprintf (FILE, "\"%s\"", xname); \
else if (darwin_label_is_anonymous_local_objc_name (xname)) \
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); \
+ asm_fprintf (FILE, "\"%U%s\"", xname); \
else \
asm_fprintf (FILE, "%U%s", xname); \
} while (0)
#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
-#undef TARGET_ASM_RELOC_RW_MASK
-#define TARGET_ASM_RELOC_RW_MASK machopic_reloc_rw_mask
+#undef TARGET_ASM_TM_CLONE_TABLE_SECTION
+#define TARGET_ASM_TM_CLONE_TABLE_SECTION darwin_tm_clone_table_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)
+#undef TARGET_ASM_RELOC_RW_MASK
+#define TARGET_ASM_RELOC_RW_MASK machopic_reloc_rw_mask
/* Globalizing directive for a label. */
#define GLOBAL_ASM_OP "\t.globl "
/* Extra attributes for Darwin. */
#define SUBTARGET_ATTRIBUTE_TABLE \
- /* { name, min_len, max_len, decl_req, type_req, fn_type_req, handler } */ \
+ /* { name, min_len, max_len, decl_req, type_req, fn_type_req, handler, \
+ affects_type_identity } */ \
{ "apple_kext_compatibility", 0, 0, false, true, false, \
- darwin_handle_kext_attribute }, \
+ darwin_handle_kext_attribute, false }, \
{ "weak_import", 0, 0, true, false, false, \
- darwin_handle_weak_import_attribute }
+ darwin_handle_weak_import_attribute, false }
+/* Make local constant labels linker-visible, so that if one follows a
+ weak_global constant, ld64 will be able to separate the atoms. */
#undef ASM_GENERATE_INTERNAL_LABEL
#define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \
- sprintf (LABEL, "*%s%ld", PREFIX, (long)(NUM))
+ do { \
+ if (strcmp ("LC", PREFIX) == 0) \
+ sprintf (LABEL, "*%s%ld", "lC", (long)(NUM)); \
+ else \
+ sprintf (LABEL, "*%s%ld", PREFIX, (long)(NUM)); \
+ } while (0)
#undef TARGET_ASM_MARK_DECL_PRESERVED
#define TARGET_ASM_MARK_DECL_PRESERVED darwin_mark_decl_preserved
#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) \
((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)
+ darwin_asm_output_dwarf_delta (FILE, SIZE, LABEL1, LABEL2, 0)
-#define ASM_OUTPUT_DWARF_OFFSET(FILE,SIZE,LABEL,BASE) \
- darwin_asm_output_dwarf_offset (FILE, SIZE, LABEL, BASE)
+#define ASM_OUTPUT_DWARF_OFFSET(FILE,SIZE,LABEL,OFFSET,BASE) \
+ darwin_asm_output_dwarf_offset (FILE, SIZE, LABEL, OFFSET, BASE)
#define ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX(ASM_OUT_FILE, ENCODING, SIZE, ADDR, DONE) \
if (ENCODING == ASM_PREFERRED_EH_DATA_FORMAT (2, 1)) { \
#define TARGET_POSIX_IO
-/* All new versions of Darwin have C99 functions. */
-
-#define TARGET_C99_FUNCTIONS 1
-
#define WINT_TYPE "int"
/* Every program on darwin links against libSystem which contains the pthread
#undef GOMP_SELF_SPECS
#define GOMP_SELF_SPECS ""
+#undef GTM_SELF_SPECS
+#define GTM_SELF_SPECS ""
/* Darwin disables section anchors by default.
They should be enabled per arch where support exists in that arch. */
#define TARGET_ASM_OUTPUT_ANCHOR NULL
#define DARWIN_SECTION_ANCHORS 0
-/* Attempt to turn on execute permission for the stack. This may be
- used by TARGET_TRAMPOLINE_INIT if the target needs it (that is,
- if the target machine can change execute permissions on a page).
-
- There is no way to query the execute permission of the stack, so
- we always issue the mprotect() call.
-
- Unfortunately it is not possible to make this namespace-clean.
-
- Also note that no errors should be emitted by this code; it is
- considered dangerous for library calls to send messages to
- stdout/stderr. */
-
-#define ENABLE_EXECUTE_STACK \
-extern void __enable_execute_stack (void *); \
-void \
-__enable_execute_stack (void *addr) \
-{ \
- extern int mprotect (void *, size_t, int); \
- extern int getpagesize (void); \
- static int size; \
- static long mask; \
- \
- char *page, *end; \
- \
- if (size == 0) \
- { \
- size = getpagesize(); \
- mask = ~((long) size - 1); \
- } \
- \
- page = (char *) (((long) addr) & mask); \
- end = (char *) ((((long) (addr + (TARGET_64BIT ? 48 : 40))) & mask) + size); \
- \
- /* 7 == PROT_READ | PROT_WRITE | PROT_EXEC */ \
- (void) mprotect (page, end - page, 7); \
-}
+#define HAVE_ENABLE_EXECUTE_STACK
/* For Apple KEXTs, we make the constructors return this to match gcc
2.95. */
#define TARGET_KEXTABI flag_apple_kext
/* We have target-specific builtins. */
-#define TARGET_FOLD_BUILTIN darwin_fold_builtin
-
-#define TARGET_OBJC_CONSTRUCT_STRING_OBJECT \
- darwin_objc_construct_string
-
-#define TARGET_STRING_OBJECT_REF_TYPE_P \
- darwin_cfstring_ref_p
+#define SUBTARGET_FOLD_BUILTIN darwin_fold_builtin
#define TARGET_N_FORMAT_TYPES 1
#define TARGET_FORMAT_TYPES darwin_additional_format_types
-#define TARGET_CHECK_STRING_OBJECT_FORMAT_ARG \
- darwin_check_cfstring_format_arg
-
-#define TARGET_HAS_TARGETCM 1
-
#ifndef USED_FOR_TARGET
extern void darwin_driver_init (unsigned int *,struct cl_decoded_option **);
#define GCC_DRIVER_HOST_INITIALIZATION \
#undef SUPPORTS_INIT_PRIORITY
#define SUPPORTS_INIT_PRIORITY 0
+/* When building cross-compilers (and native crosses) we shall default to
+ providing an osx-version-min of this unless overridden by the User.
+ 10.5 is the only version that fully supports all our archs so that's the
+ fall-back default. */
+#define DEF_MIN_OSX_VERSION "10.5"
+
+/* Later versions of ld64 support coalescing weak code/data without requiring
+ that they be placed in specially identified sections. This is the earliest
+ _tested_ version known to support this so far. */
+#define MIN_LD64_NO_COAL_SECTS "236.4"
+
+#ifndef LD64_VERSION
+#define LD64_VERSION "85.2"
+#else
+#define DEF_LD64 LD64_VERSION
+#endif
+
#endif /* CONFIG_DARWIN_H */
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