/* Target definitions for PowerPC running Darwin (Mac OS X).
- Copyright (C) 1997, 2000, 2001, 2003, 2004, 2005
+ Copyright (C) 1997, 2000, 2001, 2003, 2004, 2005, 2006
Free Software Foundation, Inc.
Contributed by Apple Computer Inc.
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. */
+ Free Software Foundation, 51 Franklin Street, Fifth Floor, Boston,
+ MA 02110-1301, USA. */
#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
#undef PTRDIFF_TYPE
#define PTRDIFF_TYPE (TARGET_64BIT ? "long int" : "int")
-/* Darwin switches. */
-/* Use dynamic-no-pic codegen (no picbase reg; not suitable for shlibs.) */
-#define MASK_MACHO_DYNAMIC_NO_PIC 0x00800000
-
-#define TARGET_DYNAMIC_NO_PIC (target_flags & MASK_MACHO_DYNAMIC_NO_PIC)
-
-/* Handle #pragma weak and #pragma pack. */
-#define HANDLE_SYSV_PRAGMA 1
-
-
-#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__"); \
- builtin_define ("__MACH__"); \
- builtin_define ("__APPLE__"); \
- } \
+/* 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 ()
-/* */
-#undef SUBTARGET_SWITCHES
-#define SUBTARGET_SWITCHES \
- { "64", MASK_64BIT | MASK_POWERPC64, \
- N_("Generate 64-bit code") }, \
- { "32", - (MASK_64BIT | MASK_POWERPC64), \
- N_("Generate 32-bit code") }, \
- {"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; \
- rs6000_altivec_vrsave = 1; \
- if (DEFAULT_ABI == ABI_DARWIN) \
- { \
- if (MACHO_DYNAMIC_NO_PIC_P) \
- { \
- if (flag_pic) \
- warning (0, "-mdynamic-no-pic overrides -fpic or -fPIC"); \
- flag_pic = 0; \
- } \
- else if (flag_pic == 1) \
- { \
- /* Darwin doesn't support -fpic. */ \
- warning (0, "-fpic is not supported; -fPIC assumed"); \
- flag_pic = 2; \
- } \
- } \
- if (TARGET_64BIT && ! TARGET_POWERPC64) \
- { \
- target_flags |= MASK_POWERPC64; \
- warning (0, "-m64 requires PowerPC64 architecture, enabling"); \
- } \
-} while(0)
+#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
the kernel or some such. */
#define CC1_SPEC "\
-%{g: %{!fno-eliminate-unused-debug-symbols: -feliminate-unused-debug-symbols }} \
-%{static: %{Zdynamic: %e conflicting code gen style switches are used}}\
-%{!static:%{!mdynamic-no-pic:-fPIC}}"
+ %{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} \
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", "%{m64:ppc64;:ppc}" }, \
+ DARWIN_EXTRA_SPECS \
+ { "darwin_arch", DARWIN_ARCH_SPEC }, \
+ { "darwin_crt2", DARWIN_CRT2_SPEC }, \
{ "darwin_subarch", DARWIN_SUBARCH_SPEC },
/* Output a .machine directive. */
/* 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) \
"v16", "v17", "v18", "v19", "v20", "v21", "v22", "v23", \
"v24", "v25", "v26", "v27", "v28", "v29", "v30", "v31", \
"vrsave", "vscr", \
- "spe_acc", "spefscr" \
+ "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 { \
unsigned HOST_WIDE_INT _new_size = SIZE; \
fprintf (FILE, "\t.align32 %d,0x60000000\n", (LOG)); \
} while (0)
-/* Generate insns to call the profiler. */
-
#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)); \
- }
+#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. */
/* 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.
? 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) \
- && TARGET_ALIGN_NATURAL == 0 \
- ? rs6000_special_round_type_align (STRUCT, COMPUTED, SPECIFIED) \
- : (TREE_CODE (STRUCT) == VECTOR_TYPE \
- && ALTIVEC_VECTOR_MODE (TYPE_MODE (STRUCT))) \
- ? 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
#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
-
-/* Just like config/darwin.h's REAL_LIBGCC_SPEC, but use -lgcc_s_ppc64 for
- -m64. */
-#undef REAL_LIBGCC_SPEC
-#define REAL_LIBGCC_SPEC \
- "%{static|static-libgcc:-lgcc -lgcc_eh; \
- :%{shared-libgcc|Zdynamiclib:%{m64:-lgcc_s_ppc64;:-lgcc_s} -lgcc; \
- :-lgcc -lgcc_eh}}"
+#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
+#ifndef __LP64__
#define MD_UNWIND_SUPPORT "config/rs6000/darwin-unwind.h"
-
-#define HAS_MD_FALLBACK_FRAME_STATE_FOR 1
+#endif
/* True, iff we're generating fast turn around debugging code. When
true, we arrange for function prologues to start with 5 nops so
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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