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. */
+the Free Software Foundation, 51 Franklin Street, Fifth Floor,
+Boston, MA 02110-1301, USA. */
/* Enable Mach-O bits in generic x86 code. */
#undef TARGET_MACHO
#define TARGET_VERSION fprintf (stderr, " (i686 Darwin)");
+#undef TARGET_64BIT
+#define TARGET_64BIT (target_flags & MASK_64BIT)
+
+#ifdef IN_LIBGCC2
+#undef TARGET_64BIT
+#ifdef __x86_64__
+#define TARGET_64BIT 1
+#else
+#define TARGET_64BIT 0
+#endif
+#endif
+
+/* Size of the Obj-C jump buffer. */
+#define OBJC_JBLEN ((TARGET_64BIT) ? ((9 * 2) + 3 + 16) : (18))
+
#undef TARGET_FPMATH_DEFAULT
#define TARGET_FPMATH_DEFAULT (TARGET_SSE ? FPMATH_SSE : FPMATH_387)
#define TARGET_OS_CPP_BUILTINS() \
do \
{ \
- builtin_define ("__i386__"); \
builtin_define ("__LITTLE_ENDIAN__"); \
- builtin_define ("__MACH__"); \
- builtin_define ("__APPLE__"); \
+ darwin_cpp_builtins (pfile); \
} \
while (0)
+#undef PTRDIFF_TYPE
+#define PTRDIFF_TYPE (TARGET_64BIT ? "long int" : "int")
+
+#undef WCHAR_TYPE
+#define WCHAR_TYPE "int"
+
+#undef WCHAR_TYPE_SIZE
+#define WCHAR_TYPE_SIZE 32
+
+#undef MAX_BITS_PER_WORD
+#define MAX_BITS_PER_WORD 64
+
+#undef FORCE_PREFERRED_STACK_BOUNDARY_IN_MAIN
+#define FORCE_PREFERRED_STACK_BOUNDARY_IN_MAIN (0)
+
/* We want -fPIC by default, unless we're using -static to compile for
the kernel or some such. */
%{g: %{!fno-eliminate-unused-debug-symbols: -feliminate-unused-debug-symbols }}"
#undef ASM_SPEC
-#define ASM_SPEC "-arch i386 -force_cpusubtype_ALL"
+#define ASM_SPEC "-arch %(darwin_arch) -force_cpusubtype_ALL"
+
+#define DARWIN_ARCH_SPEC "%{m64:x86_64;:i386}"
+#define DARWIN_SUBARCH_SPEC DARWIN_ARCH_SPEC
#undef SUBTARGET_EXTRA_SPECS
-#define SUBTARGET_EXTRA_SPECS \
- { "darwin_arch", "i386" }, \
- { "darwin_subarch", "i386" },
+#define SUBTARGET_EXTRA_SPECS \
+ { "darwin_arch", DARWIN_ARCH_SPEC }, \
+ { "darwin_crt2", "" }, \
+ { "darwin_subarch", DARWIN_SUBARCH_SPEC },
/* Use the following macro for any Darwin/x86-specific command-line option
translation. */
#define SHIFT_DOUBLE_OMITS_COUNT 0
+extern void darwin_x86_file_end (void);
+#undef TARGET_ASM_FILE_END
+#define TARGET_ASM_FILE_END darwin_x86_file_end
+
/* Define the syntax of pseudo-ops, labels and comments. */
/* String containing the assembler's comment-starter. */
/* By default, target has a 80387, uses IEEE compatible arithmetic,
and returns float values in the 387. */
-#define TARGET_SUBTARGET_DEFAULT (MASK_80387 | MASK_IEEE_FP | MASK_FLOAT_RETURNS | MASK_128BIT_LONG_DOUBLE | MASK_ALIGN_DOUBLE)
-
-/* TARGET_DEEP_BRANCH_PREDICTION is incompatible with Mach-O PIC. */
-
-#undef TARGET_DEEP_BRANCH_PREDICTION
-#define TARGET_DEEP_BRANCH_PREDICTION 0
+#define TARGET_SUBTARGET_DEFAULT (MASK_80387 | MASK_IEEE_FP | MASK_FLOAT_RETURNS | MASK_128BIT_LONG_DOUBLE)
/* For now, disable dynamic-no-pic. We'll need to go through i386.c
with a fine-tooth comb looking for refs to flag_pic! */
#define MASK_MACHO_DYNAMIC_NO_PIC 0
#define TARGET_DYNAMIC_NO_PIC (target_flags & MASK_MACHO_DYNAMIC_NO_PIC)
+#undef GOT_SYMBOL_NAME
+#define GOT_SYMBOL_NAME (machopic_function_base_name ())
+
/* Define the syntax of pseudo-ops, labels and comments. */
#define LPREFIX "L"
#define ASM_BYTE_OP "\t.byte\t"
#define ASM_SHORT "\t.word\t"
#define ASM_LONG "\t.long\t"
-/* Darwin as doesn't do ".quad". */
+#define ASM_QUAD "\t.quad\t"
+
+#define SUBTARGET_ENCODE_SECTION_INFO darwin_encode_section_info
#undef ASM_OUTPUT_ALIGN
#define ASM_OUTPUT_ALIGN(FILE,LOG) \
do { if ((LOG) != 0) \
{ \
- if (in_text_section ()) \
+ if (in_section == text_section) \
fprintf (FILE, "\t%s %d,0x90\n", ALIGN_ASM_OP, (LOG)); \
else \
fprintf (FILE, "\t%s %d\n", ALIGN_ASM_OP, (LOG)); \
#undef FUNCTION_PROFILER
#define FUNCTION_PROFILER(FILE, LABELNO) \
do { \
- if (MACHOPIC_INDIRECT) \
+ if (MACHOPIC_INDIRECT && !TARGET_64BIT) \
{ \
const char *name = machopic_mcount_stub_name (); \
fprintf (FILE, "\tcall %s\n", name+1); /* skip '&' */ \
} \
else fprintf (FILE, "\tcall mcount\n"); \
} while (0)
+
+/* Darwin on x86_64 uses dwarf-2 by default. */
+#undef PREFERRED_DEBUGGING_TYPE
+#define PREFERRED_DEBUGGING_TYPE (TARGET_64BIT ? DWARF2_DEBUG : DBX_DEBUG)
+
+/* Darwin uses the standard DWARF register numbers but the default
+ register numbers for STABS. Fortunately for 64-bit code the
+ default and the standard are the same. */
+#undef DBX_REGISTER_NUMBER
+#define DBX_REGISTER_NUMBER(n) \
+ (TARGET_64BIT ? dbx64_register_map[n] \
+ : write_symbols == DWARF2_DEBUG ? svr4_dbx_register_map[n] \
+ : dbx_register_map[n])
+
+/* Unfortunately, the 32-bit EH information also doesn't use the standard
+ DWARF register numbers. */
+#define DWARF2_FRAME_REG_OUT(n, for_eh) \
+ (! (for_eh) || write_symbols != DWARF2_DEBUG || TARGET_64BIT ? (n) \
+ : (n) == 5 ? 4 \
+ : (n) == 4 ? 5 \
+ : (n) >= 11 && (n) <= 18 ? (n) + 1 \
+ : (n))
+
+/* Attempt to turn on execute permission for the stack. This may be
+ used by INITIALIZE_TRAMPOLINE of 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.
+
+ Note that we go out of our way to use namespace-non-invasive calls
+ here. Unfortunately, there is no libc-internal name for mprotect().
+
+ 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 __sysctl (int *, unsigned int, void *, size_t *, \
+ void *, size_t); \
+ \
+ static int size; \
+ static long mask; \
+ \
+ char *page, *end; \
+ \
+ if (size == 0) \
+ { \
+ int mib[2]; \
+ size_t len; \
+ \
+ mib[0] = 6; /* CTL_HW */ \
+ mib[1] = 7; /* HW_PAGESIZE */ \
+ len = sizeof (size); \
+ (void) __sysctl (mib, 2, &size, &len, NULL, 0); \
+ mask = ~((long) size - 1); \
+ } \
+ \
+ page = (char *) (((long) addr) & mask); \
+ end = (char *) ((((long) (addr + TRAMPOLINE_SIZE)) & mask) + size); \
+ \
+ /* 7 == PROT_READ | PROT_WRITE | PROT_EXEC */ \
+ (void) mprotect (page, end - page, 7); \
+}
+
+#undef REGISTER_TARGET_PRAGMAS
+#define REGISTER_TARGET_PRAGMAS() DARWIN_REGISTER_TARGET_PRAGMAS()
+
+#undef TARGET_SET_DEFAULT_TYPE_ATTRIBUTES
+#define TARGET_SET_DEFAULT_TYPE_ATTRIBUTES darwin_set_default_type_attributes
+
+/* For 64-bit, we need to add 4 because @GOTPCREL is relative to the
+ end of the instruction, but without the 4 we'd only have the right
+ address for the start of the instruction. */
+#undef ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX
+#define ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX(FILE, ENCODING, SIZE, ADDR, DONE) \
+ if (TARGET_64BIT) \
+ { \
+ if ((SIZE) == 4 && ((ENCODING) & 0x70) == DW_EH_PE_pcrel) \
+ { \
+ fputs (ASM_LONG, FILE); \
+ assemble_name (FILE, XSTR (ADDR, 0)); \
+ fputs ("+4@GOTPCREL", FILE); \
+ goto DONE; \
+ } \
+ } \
+ else \
+ { \
+ if (ENCODING == ASM_PREFERRED_EH_DATA_FORMAT (2, 1)) \
+ { \
+ darwin_non_lazy_pcrel (FILE, ADDR); \
+ goto DONE; \
+ } \
+ }
+
+/* This needs to move since i386 uses the first flag and other flags are
+ used in Mach-O. */
+#undef MACHO_SYMBOL_FLAG_VARIABLE
+#define MACHO_SYMBOL_FLAG_VARIABLE ((SYMBOL_FLAG_MACH_DEP) << 3)
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