/* Target definitions for PowerPC running Darwin (Mac OS X).
- Copyright (C) 1997, 2000, 2001, 2003, 2004 Free Software Foundation, Inc.
+ Copyright (C) 1997, 2000, 2001, 2003, 2004, 2005, 2006
+ Free Software Foundation, Inc.
Contributed by Apple Computer Inc.
This file is part of GCC.
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
-
+/* 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 ("__ppc64__"); \
builtin_define ("__POWERPC__"); \
builtin_define ("__NATURAL_ALIGNMENT__"); \
- builtin_define ("__MACH__"); \
- builtin_define ("__APPLE__"); \
+ darwin_cpp_builtins (pfile); \
} \
while (0)
-/* */
-#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 { \
+ /* The Darwin ABI always includes AltiVec, can't be (validly) turned \
+ off. */ \
rs6000_altivec_abi = 1; \
- rs6000_altivec_vrsave = 1; \
+ TARGET_ALTIVEC_VRSAVE = 1; \
if (DEFAULT_ABI == ABI_DARWIN) \
{ \
if (MACHO_DYNAMIC_NO_PIC_P) \
{ \
if (flag_pic) \
- warning ("-mdynamic-no-pic overrides -fpic or -fPIC"); \
+ warning (0, "-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; \
} \
- \
- /* Handle -mfix-and-continue. */ \
- if (darwin_fix_and_continue_switch) \
- { \
- const char *base = darwin_fix_and_continue_switch; \
- while (base[-1] != 'm') base--; \
- \
- if (*darwin_fix_and_continue_switch != '\0') \
- error ("invalid option %qs", base); \
- darwin_fix_and_continue = (base[0] != 'n'); \
- } \
} \
if (TARGET_64BIT && ! TARGET_POWERPC64) \
{ \
target_flags |= MASK_POWERPC64; \
- warning ("-m64 requires PowerPC64 architecture, enabling"); \
+ 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 ((! darwin_macosx_version_min \
+ || strverscmp (darwin_macosx_version_min, "10.4.6") < 0) \
+ && flag_use_cxa_get_exception_ptr == 2) \
+ flag_use_cxa_get_exception_ptr = 0; \
+} 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
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)}"
+
#undef SUBTARGET_EXTRA_SPECS
#define SUBTARGET_EXTRA_SPECS \
{ "darwin_arch", "%{m64:ppc64;:ppc}" }, \
+ { "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. */
/* 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)); \
+ }
+#endif
+
#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.
/* 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. */
-extern const char *darwin_one_byte_bool;
#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>
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 \
+ || (darwin_macosx_version_min \
+ && strverscmp (darwin_macosx_version_min, "10.3") >= 0))
+
+/* 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 + (TARGET_64BIT ? 48 : 40))) & mask) + size); \
+ \
+ /* 7 == PROT_READ | PROT_WRITE | PROT_EXEC */ \
+ (void) mprotect (page, end - page, 7); \
+}
OSDN Git Service
