/* Target definitions for PowerPC running Darwin (Mac OS X).
- Copyright (C) 1997, 2000, 2001, 2003 Free Software Foundation, Inc.
+ Copyright (C) 1997, 2000, 2001, 2003, 2004, 2005, 2006, 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 2, or (at your
+ 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
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. */
+ 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)");
#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
-/* Darwin switches. */
-/* Use dynamic-no-pic codegen (no picbase reg; not suitable for shlibs.) */
-#define MASK_MACHO_DYNAMIC_NO_PIC 0x00800000
+/* 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 TARGET_DYNAMIC_NO_PIC (target_flags & MASK_MACHO_DYNAMIC_NO_PIC)
+#define SUBTARGET_OVERRIDE_OPTIONS darwin_rs6000_override_options ()
-/* Handle #pragma weak and #pragma pack. */
-#define HANDLE_SYSV_PRAGMA 1
+#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 TARGET_OS_CPP_BUILTINS() \
- do \
- { \
- builtin_define ("__ppc__"); \
- builtin_define ("__POWERPC__"); \
- builtin_define ("__NATURAL_ALIGNMENT__"); \
- builtin_define ("__MACH__"); \
- builtin_define ("__APPLE__"); \
- } \
- while (0)
+#define RS6000_DEFAULT_LONG_DOUBLE_SIZE 128
-/* */
-#undef SUBTARGET_SWITCHES
-#define SUBTARGET_SWITCHES \
- {"dynamic-no-pic", MASK_MACHO_DYNAMIC_NO_PIC, \
- N_("Generate code suitable for executables (NOT shared libs)")}, \
- {"no-dynamic-no-pic", -MASK_MACHO_DYNAMIC_NO_PIC, ""},
-
-
-/* The Darwin ABI always includes AltiVec, can't be (validly) turned
- off. */
-
-#define SUBTARGET_OVERRIDE_OPTIONS \
-do { \
- rs6000_altivec_abi = 1; \
- if (DEFAULT_ABI == ABI_DARWIN) \
- { \
- if (MACHO_DYNAMIC_NO_PIC_P) \
- { \
- if (flag_pic) \
- warning ("-mdynamic-no-pic overrides -fpic or -fPIC"); \
- flag_pic = 0; \
- } \
- else if (flag_pic == 1) \
- { \
- /* Darwin doesn't support -fpic. */ \
- warning ("-fpic is not supported; -fPIC assumed"); \
- flag_pic = 2; \
- } \
- } \
-}while(0)
-
/* We want -fPIC by default, unless we're using -static to compile for
the kernel or some such. */
-
#define CC1_SPEC "\
-%{gused: -feliminate-unused-debug-symbols %<gused }\
-%{static: %{Zdynamic: %e conflicting code gen style switches are used}}\
-%{!static:%{!mdynamic-no-pic:-fPIC}}"
-
-#define ASM_SPEC "-arch ppc \
- %{Zforce_cpusubtype_ALL:-force_cpusubtype_ALL} \
- %{!Zforce_cpusubtype_ALL:%{faltivec:-force_cpusubtype_ALL}}"
+ %(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_arch", "ppc" },
-
-/* Make both r2 and r3 available for allocation. */
+ 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 FRAME_POINTER_REGNUM
-#define FRAME_POINTER_REGNUM 30
+#undef HARD_FRAME_POINTER_REGNUM
+#define HARD_FRAME_POINTER_REGNUM 30
#undef RS6000_PIC_OFFSET_TABLE_REGNUM
#define RS6000_PIC_OFFSET_TABLE_REGNUM 31
#undef STARTING_FRAME_OFFSET
#define STARTING_FRAME_OFFSET \
- (RS6000_ALIGN (current_function_outgoing_args_size, 16) \
- + RS6000_VARARGS_AREA \
- + RS6000_SAVE_AREA)
+ (FRAME_GROWS_DOWNWARD \
+ ? 0 \
+ : (RS6000_ALIGN (current_function_outgoing_args_size, 16) \
+ + RS6000_SAVE_AREA))
#undef STACK_DYNAMIC_OFFSET
#define STACK_DYNAMIC_OFFSET(FUNDECL) \
/* These are used by -fbranch-probabilities */
#define HOT_TEXT_SECTION_NAME "__TEXT,__text,regular,pure_instructions"
#define UNLIKELY_EXECUTED_TEXT_SECTION_NAME \
- "__TEXT,__text2,regular,pure_instructions"
+ "__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)
-/* Always use the "debug" register names, they're what the assembler
- wants to see. */
+/* 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 DEBUG_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. */
/* This says how to output an assembler line to define a global common
symbol. */
-/* ? */
-#undef ASM_OUTPUT_ALIGNED_COMMON
-#define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED) \
- do { fputs (".comm ", (FILE)); \
- RS6000_OUTPUT_BASENAME ((FILE), (NAME)); \
- fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED"\n",\
- (SIZE)); } while (0)
+#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. */
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)
#define RS6000_MCOUNT "*mcount"
-/* Default processor: a G4. */
+/* 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
#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) 0
+#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.
+/* 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.
#undef PREFERRED_RELOAD_CLASS
#define PREFERRED_RELOAD_CLASS(X,CLASS) \
- ((GET_CODE (X) == CONST_DOUBLE \
- && GET_MODE_CLASS (GET_MODE (X)) == MODE_FLOAT) \
+ ((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))) \
? GENERAL_REGS \
: (CLASS))
-/* Fix for emit_group_load (): force large constants to be pushed via regs. */
-#define ALWAYS_PUSH_CONSTS_USING_REGS_P 1
-
-/* This now supports a natural alignment mode */
-/* Darwin word-aligns FP doubles but doubleword-aligns 64-bit ints. */
-#define ADJUST_FIELD_ALIGN(FIELD, COMPUTED) \
- (TARGET_ALIGN_NATURAL ? (COMPUTED) : \
- (TYPE_MODE (TREE_CODE (TREE_TYPE (FIELD)) == ARRAY_TYPE \
- ? get_inner_array_type (FIELD) \
- : TREE_TYPE (FIELD)) == DFmode \
- ? MIN ((COMPUTED), 32) : (COMPUTED)))
+/* 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) \
- && TYPE_FIELDS (STRUCT) != 0 \
- && TARGET_ALIGN_NATURAL == 0 \
- && DECL_MODE (TYPE_FIELDS (STRUCT)) == DFmode \
- ? MAX (MAX ((COMPUTED), (SPECIFIED)), 64) \
- : (TARGET_ALTIVEC && TREE_CODE (STRUCT) == VECTOR_TYPE) \
- ? MAX (MAX ((COMPUTED), (SPECIFIED)), 128) \
+#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"
-/* Get HOST_WIDE_INT and CONST_INT to be 32 bits, for compile time
- space/speed. */
-#undef MAX_LONG_TYPE_SIZE
-#define MAX_LONG_TYPE_SIZE 32
-
/* For binary compatibility with 2.95; Darwin C APIs use bool from
- stdbool.h, which was an int-sized enum in 2.95. */
-#define BOOL_TYPE_SIZE INT_TYPE_SIZE
+ 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 DARWIN_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)
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