--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/config/rs6000/darwin.h	Fri Jul 17 14:47:48 2009 +0900
@@ -0,0 +1,439 @@
+/* Target definitions for PowerPC running Darwin (Mac OS X).
+   Copyright (C) 1997, 2000, 2001, 2003, 2004, 2005, 2006, 2007, 2008
+   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 COPYING3.  If not see
+   <http://www.gnu.org/licenses/>.  */
+
+#undef  TARGET_VERSION
+#define TARGET_VERSION fprintf (stderr, " (Darwin/PowerPC)");
+
+/* The "Darwin ABI" is mostly like AIX, but with some key differences.  */
+
+#define DEFAULT_ABI ABI_DARWIN
+
+#ifdef IN_LIBGCC2
+#undef TARGET_64BIT
+#ifdef __powerpc64__
+#define TARGET_64BIT 1
+#else
+#define TARGET_64BIT 0
+#endif
+#endif
+
+/* The object file format is Mach-O.  */
+
+#define TARGET_OBJECT_FORMAT OBJECT_MACHO
+
+/* Size of the Obj-C jump buffer.  */
+#define OBJC_JBLEN ((TARGET_64BIT) ? (26*2 + 18*2 + 129 + 1) : (26 + 18*2 + 129 + 1))
+
+/* We're not ever going to do TOCs.  */
+
+#define TARGET_TOC 0
+#define TARGET_NO_TOC 1
+
+/* Override the default rs6000 definition.  */
+#undef  PTRDIFF_TYPE
+#define PTRDIFF_TYPE (TARGET_64BIT ? "long int" : "int")
+
+/* Translate config/rs6000/darwin.opt to config/darwin.h.  */
+#define TARGET_DYNAMIC_NO_PIC (TARGET_MACHO_DYNAMIC_NO_PIC)
+
+#define TARGET_OS_CPP_BUILTINS()			\
+  do							\
+    {							\
+      if (!TARGET_64BIT) builtin_define ("__ppc__");	\
+      if (TARGET_64BIT) builtin_define ("__ppc64__");	\
+      builtin_define ("__POWERPC__");			\
+      builtin_define ("__NATURAL_ALIGNMENT__");		\
+      darwin_cpp_builtins (pfile);			\
+    }							\
+  while (0)
+
+#define SUBTARGET_OVERRIDE_OPTIONS darwin_rs6000_override_options ()
+
+#define C_COMMON_OVERRIDE_OPTIONS do {					\
+  /* On powerpc, __cxa_get_exception_ptr is available starting in the	\
+     10.4.6 libstdc++.dylib.  */					\
+  if (strverscmp (darwin_macosx_version_min, "10.4.6") < 0		\
+      && flag_use_cxa_get_exception_ptr == 2)				\
+    flag_use_cxa_get_exception_ptr = 0;					\
+  if (flag_mkernel)							\
+    flag_no_builtin = 1;						\
+  SUBTARGET_C_COMMON_OVERRIDE_OPTIONS;					\
+} while (0)
+
+/* Darwin has 128-bit long double support in libc in 10.4 and later.
+   Default to 128-bit long doubles even on earlier platforms for ABI
+   consistency; arithmetic will work even if libc and libm support is
+   not available.  */
+
+#define RS6000_DEFAULT_LONG_DOUBLE_SIZE 128
+
+
+/* We want -fPIC by default, unless we're using -static to compile for
+   the kernel or some such.  */
+
+#define CC1_SPEC "\
+  %(cc1_cpu) \
+  %{g: %{!fno-eliminate-unused-debug-symbols: -feliminate-unused-debug-symbols }} \
+  %{static: %{Zdynamic: %e conflicting code gen style switches are used}}\
+  %{!mmacosx-version-min=*:-mmacosx-version-min=%(darwin_minversion)} \
+  %{!mkernel:%{!static:%{!mdynamic-no-pic:-fPIC}}}"
+
+#define DARWIN_ARCH_SPEC "%{m64:ppc64;:ppc}"
+
+#define DARWIN_SUBARCH_SPEC "			\
+ %{m64: ppc64}					\
+ %{!m64:					\
+ %{mcpu=601:ppc601;				\
+   mcpu=603:ppc603;				\
+   mcpu=603e:ppc603;				\
+   mcpu=604:ppc604;				\
+   mcpu=604e:ppc604e;				\
+   mcpu=740:ppc750;				\
+   mcpu=750:ppc750;				\
+   mcpu=G3:ppc750;				\
+   mcpu=7400:ppc7400;				\
+   mcpu=G4:ppc7400;				\
+   mcpu=7450:ppc7450;				\
+   mcpu=970:ppc970;				\
+   mcpu=power4:ppc970;				\
+   mcpu=G5:ppc970;				\
+   :ppc}}"
+
+/* crt2.o is at least partially required for 10.3.x and earlier.  */
+#define DARWIN_CRT2_SPEC \
+  "%{!m64:%:version-compare(!> 10.4 mmacosx-version-min= crt2.o%s)}"
+
+/* Determine a minimum version based on compiler options.  */
+#define DARWIN_MINVERSION_SPEC					\
+  "%{m64:%{fgnu-runtime:10.4;					\
+	   ,objective-c|,objc-cpp-output:10.5;			\
+	   ,objective-c-header:10.5;				\
+	   ,objective-c++|,objective-c++-cpp-output:10.5;	\
+	   ,objective-c++-header|,objc++-cpp-output:10.5;	\
+	   :10.4};						\
+     shared-libgcc:10.3;					\
+     :10.1}"
+
+#undef SUBTARGET_EXTRA_SPECS
+#define SUBTARGET_EXTRA_SPECS			\
+  DARWIN_EXTRA_SPECS                            \
+  { "darwin_arch", DARWIN_ARCH_SPEC },		\
+  { "darwin_crt2", DARWIN_CRT2_SPEC },		\
+  { "darwin_subarch", DARWIN_SUBARCH_SPEC },
+
+/* Output a .machine directive.  */
+#undef TARGET_ASM_FILE_START
+#define TARGET_ASM_FILE_START rs6000_darwin_file_start
+
+/* The "-faltivec" option should have been called "-maltivec" all
+   along.  -ffix-and-continue and -findirect-data is for compatibility
+   for old compilers.  */
+
+#define SUBTARGET_OPTION_TRANSLATE_TABLE				\
+  { "-ffix-and-continue", "-mfix-and-continue" },			\
+  { "-findirect-data", "-mfix-and-continue" },				\
+  { "-faltivec", "-maltivec -include altivec.h" },			\
+  { "-fno-altivec", "-mno-altivec" },					\
+  { "-Waltivec-long-deprecated",	"-mwarn-altivec-long" },	\
+  { "-Wno-altivec-long-deprecated", "-mno-warn-altivec-long" }
+
+/* Make both r2 and r13 available for allocation.  */
+#define FIXED_R2 0
+#define FIXED_R13 0
+
+/* Base register for access to local variables of the function.  */
+
+#undef  HARD_FRAME_POINTER_REGNUM
+#define HARD_FRAME_POINTER_REGNUM 30
+
+#undef  RS6000_PIC_OFFSET_TABLE_REGNUM
+#define RS6000_PIC_OFFSET_TABLE_REGNUM 31
+
+/* Pad the outgoing args area to 16 bytes instead of the usual 8.  */
+
+#undef STARTING_FRAME_OFFSET
+#define STARTING_FRAME_OFFSET						\
+  (FRAME_GROWS_DOWNWARD							\
+   ? 0									\
+   : (RS6000_ALIGN (crtl->outgoing_args_size, 16)		\
+      + RS6000_SAVE_AREA))
+
+#undef STACK_DYNAMIC_OFFSET
+#define STACK_DYNAMIC_OFFSET(FUNDECL)					\
+  (RS6000_ALIGN (crtl->outgoing_args_size, 16)		\
+   + (STACK_POINTER_OFFSET))
+
+/* These are used by -fbranch-probabilities */
+#define HOT_TEXT_SECTION_NAME "__TEXT,__text,regular,pure_instructions"
+#define UNLIKELY_EXECUTED_TEXT_SECTION_NAME \
+                              "__TEXT,__unlikely,regular,pure_instructions"
+
+/* Define cutoff for using external functions to save floating point.
+   Currently on Darwin, always use inline stores.  */
+
+#undef	FP_SAVE_INLINE
+#define FP_SAVE_INLINE(FIRST_REG) ((FIRST_REG) < 64)
+#undef GP_SAVE_INLINE
+#define GP_SAVE_INLINE(FIRST_REG) ((FIRST_REG) < 32)
+
+/* Darwin uses a function call if everything needs to be saved/restored.  */
+#undef WORLD_SAVE_P
+#define WORLD_SAVE_P(INFO) ((INFO)->world_save_p)
+
+/* The assembler wants the alternate register names, but without
+   leading percent sign.  */
+#undef REGISTER_NAMES
+#define REGISTER_NAMES							\
+{									\
+     "r0",  "r1",  "r2",  "r3",  "r4",  "r5",  "r6",  "r7",		\
+     "r8",  "r9", "r10", "r11", "r12", "r13", "r14", "r15",		\
+    "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",		\
+    "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31",		\
+     "f0",  "f1",  "f2",  "f3",  "f4",  "f5",  "f6",  "f7",		\
+     "f8",  "f9", "f10", "f11", "f12", "f13", "f14", "f15",		\
+    "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23",		\
+    "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31",		\
+     "mq",  "lr", "ctr",  "ap",						\
+    "cr0", "cr1", "cr2", "cr3", "cr4", "cr5", "cr6", "cr7",		\
+    "xer",								\
+     "v0",  "v1",  "v2",  "v3",  "v4",  "v5",  "v6",  "v7",             \
+     "v8",  "v9", "v10", "v11", "v12", "v13", "v14", "v15",             \
+    "v16", "v17", "v18", "v19", "v20", "v21", "v22", "v23",             \
+    "v24", "v25", "v26", "v27", "v28", "v29", "v30", "v31",             \
+    "vrsave", "vscr",							\
+    "spe_acc", "spefscr",                                               \
+    "sfp"								\
+}
+
+/* This outputs NAME to FILE.  */
+
+#undef  RS6000_OUTPUT_BASENAME
+#define RS6000_OUTPUT_BASENAME(FILE, NAME)	\
+    assemble_name (FILE, NAME)
+
+/* Globalizing directive for a label.  */
+#undef GLOBAL_ASM_OP
+#define GLOBAL_ASM_OP "\t.globl "
+#undef TARGET_ASM_GLOBALIZE_LABEL
+
+/* This is how to output an internal label prefix.  rs6000.c uses this
+   when generating traceback tables.  */
+/* Not really used for Darwin?  */
+
+#undef ASM_OUTPUT_INTERNAL_LABEL_PREFIX
+#define ASM_OUTPUT_INTERNAL_LABEL_PREFIX(FILE,PREFIX)	\
+  fprintf (FILE, "%s", PREFIX)
+
+/* This says how to output an assembler line to define a global common
+   symbol.  */
+#define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED)			\
+  do {									\
+    unsigned HOST_WIDE_INT _new_size = SIZE;				\
+    fputs (".comm ", (FILE));						\
+    RS6000_OUTPUT_BASENAME ((FILE), (NAME));				\
+    if (_new_size == 0) _new_size = 1;					\
+    fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED"\n", _new_size);	\
+  } while (0)
+
+/* Override the standard rs6000 definition.  */
+
+#undef ASM_COMMENT_START
+#define ASM_COMMENT_START ";"
+
+/* FP save and restore routines.  */
+#define	SAVE_FP_PREFIX "._savef"
+#define SAVE_FP_SUFFIX ""
+#define	RESTORE_FP_PREFIX "._restf"
+#define RESTORE_FP_SUFFIX ""
+
+/* This is how to output an assembler line that says to advance
+   the location counter to a multiple of 2**LOG bytes using the
+   "nop" instruction as padding.  */
+
+#define ASM_OUTPUT_ALIGN_WITH_NOP(FILE,LOG)                   \
+  do                                                          \
+    {                                                         \
+      if ((LOG) < 3)                                          \
+        {                                                     \
+          ASM_OUTPUT_ALIGN (FILE,LOG);                        \
+        }                                                     \
+      else /* nop == ori r0,r0,0 */                           \
+        fprintf (FILE, "\t.align32 %d,0x60000000\n", (LOG));  \
+    } while (0)
+
+#ifdef HAVE_GAS_MAX_SKIP_P2ALIGN
+/* This is supported in cctools 465 and later.  The macro test
+   above prevents using it in earlier build environments.  */
+#define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE,LOG,MAX_SKIP)          \
+  if ((LOG) != 0)                                             \
+    {                                                         \
+      if ((MAX_SKIP) == 0)                                    \
+        fprintf ((FILE), "\t.p2align %d\n", (LOG));           \
+      else                                                    \
+        fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP)); \
+    }
+#endif
+
+/* Generate insns to call the profiler.  */
+
+#define PROFILE_HOOK(LABEL)   output_profile_hook (LABEL)
+
+/* Function name to call to do profiling.  */
+
+#define RS6000_MCOUNT "*mcount"
+
+/* Default processor: G4, and G5 for 64-bit.  */
+
+#undef PROCESSOR_DEFAULT
+#define PROCESSOR_DEFAULT  PROCESSOR_PPC7400
+#undef PROCESSOR_DEFAULT64
+#define PROCESSOR_DEFAULT64  PROCESSOR_POWER4
+
+/* Default target flag settings.  Despite the fact that STMW/LMW
+   serializes, it's still a big code size win to use them.  Use FSEL by
+   default as well.  */
+
+#undef  TARGET_DEFAULT
+#define TARGET_DEFAULT (MASK_POWERPC | MASK_MULTIPLE | MASK_NEW_MNEMONICS \
+                      | MASK_PPC_GFXOPT)
+
+/* Darwin only runs on PowerPC, so short-circuit POWER patterns.  */
+#undef  TARGET_POWER
+#define TARGET_POWER 0
+#undef  TARGET_IEEEQUAD
+#define TARGET_IEEEQUAD 0
+
+/* Since Darwin doesn't do TOCs, stub this out.  */
+
+#define ASM_OUTPUT_SPECIAL_POOL_ENTRY_P(X, MODE)  ((void)X, (void)MODE, 0)
+
+/* Unlike most other PowerPC targets, chars are signed, for
+   consistency with other Darwin architectures.  */
+
+#undef DEFAULT_SIGNED_CHAR
+#define DEFAULT_SIGNED_CHAR (1)
+
+/* Given an rtx X being reloaded into a reg required to be
+   in class CLASS, return the class of reg to actually use.
+   In general this is just CLASS; but on some machines
+   in some cases it is preferable to use a more restrictive class.
+
+   On the RS/6000, we have to return NO_REGS when we want to reload a
+   floating-point CONST_DOUBLE to force it to be copied to memory.
+
+   Don't allow R0 when loading the address of, or otherwise furtling with,
+   a SYMBOL_REF.  */
+
+#undef PREFERRED_RELOAD_CLASS
+#define PREFERRED_RELOAD_CLASS(X,CLASS)				\
+  ((CONSTANT_P (X)						\
+    && reg_classes_intersect_p ((CLASS), FLOAT_REGS))		\
+   ? NO_REGS							\
+   : ((GET_CODE (X) == SYMBOL_REF || GET_CODE (X) == HIGH)	\
+      && reg_class_subset_p (BASE_REGS, (CLASS)))		\
+   ? BASE_REGS							\
+   : (GET_MODE_CLASS (GET_MODE (X)) == MODE_INT			\
+      && (CLASS) == NON_SPECIAL_REGS)				\
+   ? GENERAL_REGS						\
+   : (CLASS))
+
+/* Compute field alignment.  This is similar to the version of the
+   macro in the Apple version of GCC, except that version supports
+   'mac68k' alignment, and that version uses the computed alignment
+   always for the first field of a structure.  The first-field
+   behavior is dealt with by
+   darwin_rs6000_special_round_type_align.  */
+#define ADJUST_FIELD_ALIGN(FIELD, COMPUTED)	\
+  (TARGET_ALIGN_NATURAL ? (COMPUTED)		\
+   : (COMPUTED) == 128 ? 128			\
+   : MIN ((COMPUTED), 32))
+
+/* Darwin increases natural record alignment to doubleword if the first
+   field is an FP double while the FP fields remain word aligned.  */
+#define ROUND_TYPE_ALIGN(STRUCT, COMPUTED, SPECIFIED)			  \
+  ((TREE_CODE (STRUCT) == RECORD_TYPE					  \
+    || TREE_CODE (STRUCT) == UNION_TYPE					  \
+    || TREE_CODE (STRUCT) == QUAL_UNION_TYPE)				  \
+   && TARGET_ALIGN_NATURAL == 0						  \
+   ? darwin_rs6000_special_round_type_align (STRUCT, COMPUTED, SPECIFIED) \
+   : (TREE_CODE (STRUCT) == VECTOR_TYPE					  \
+      && ALTIVEC_VECTOR_MODE (TYPE_MODE (STRUCT)))			  \
+   ? MAX (MAX ((COMPUTED), (SPECIFIED)), 128)				  \
+   : MAX ((COMPUTED), (SPECIFIED)))
+
+/* Specify padding for the last element of a block move between
+   registers and memory.  FIRST is nonzero if this is the only
+   element.  */
+#define BLOCK_REG_PADDING(MODE, TYPE, FIRST) \
+  (!(FIRST) ? upward : FUNCTION_ARG_PADDING (MODE, TYPE))
+
+/* XXX: Darwin supports neither .quad, or .llong, but it also doesn't
+   support 64 bit PowerPC either, so this just keeps things happy.  */
+#define DOUBLE_INT_ASM_OP "\t.quad\t"
+
+/* For binary compatibility with 2.95; Darwin C APIs use bool from
+   stdbool.h, which was an int-sized enum in 2.95.  Users can explicitly
+   choose to have sizeof(bool)==1 with the -mone-byte-bool switch. */
+#define BOOL_TYPE_SIZE (darwin_one_byte_bool ? CHAR_TYPE_SIZE : INT_TYPE_SIZE)
+
+#undef REGISTER_TARGET_PRAGMAS
+#define REGISTER_TARGET_PRAGMAS() \
+  do \
+    { \
+      DARWIN_REGISTER_TARGET_PRAGMAS(); \
+      targetm.resolve_overloaded_builtin = altivec_resolve_overloaded_builtin; \
+    } \
+  while (0)
+
+#ifdef IN_LIBGCC2
+#include <stdbool.h>
+#endif
+
+#if !defined(__LP64__) && !defined(DARWIN_LIBSYSTEM_HAS_UNWIND)
+#define MD_UNWIND_SUPPORT "config/rs6000/darwin-unwind.h"
+#endif
+
+/* True, iff we're generating fast turn around debugging code.  When
+   true, we arrange for function prologues to start with 5 nops so
+   that gdb may insert code to redirect them, and for data to be
+   accessed indirectly.  The runtime uses this indirection to forward
+   references for data to the original instance of that data.  */
+
+#define TARGET_FIX_AND_CONTINUE (darwin_fix_and_continue)
+
+/* This is the reserved direct dispatch address for Objective-C.  */
+#define OFFS_MSGSEND_FAST		0xFFFEFF00
+
+/* This is the reserved ivar address Objective-C.  */
+#define OFFS_ASSIGNIVAR_FAST		0xFFFEFEC0
+
+/* Old versions of Mac OS/Darwin don't have C99 functions available.  */
+#undef TARGET_C99_FUNCTIONS
+#define TARGET_C99_FUNCTIONS					\
+  (TARGET_64BIT							\
+   || strverscmp (darwin_macosx_version_min, "10.3") >= 0)
+
+/* When generating kernel code or kexts, we don't use Altivec by
+   default, as kernel code doesn't save/restore those registers.  */
+#define OS_MISSING_ALTIVEC (flag_mkernel || flag_apple_kext)
+
+/* Darwin has to rename some of the long double builtins.  */
+#define SUBTARGET_INIT_BUILTINS darwin_patch_builtins ()