diff options
Diffstat (limited to 'contrib/gcc/config/rs6000/darwin.h')
| -rw-r--r-- | contrib/gcc/config/rs6000/darwin.h | 308 |
1 files changed, 226 insertions, 82 deletions
diff --git a/contrib/gcc/config/rs6000/darwin.h b/contrib/gcc/config/rs6000/darwin.h index cae8bac..7bd53fc 100644 --- a/contrib/gcc/config/rs6000/darwin.h +++ b/contrib/gcc/config/rs6000/darwin.h @@ -1,5 +1,6 @@ /* 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. @@ -16,8 +17,8 @@ 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)"); @@ -26,106 +27,180 @@ #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 - -#define TARGET_DYNAMIC_NO_PIC (target_flags & MASK_MACHO_DYNAMIC_NO_PIC) - -/* Handle #pragma weak and #pragma pack. */ -#define HANDLE_SYSV_PRAGMA 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 \ { \ - builtin_define ("__ppc__"); \ + 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__"); \ + darwin_cpp_builtins (pfile); \ } \ while (0) -/* */ -#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 \ +#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; \ } \ } \ -}while(0) + if (TARGET_64BIT && ! TARGET_POWERPC64) \ + { \ + target_flags |= MASK_POWERPC64; \ + warning (0, "-m64 requires PowerPC64 architecture, enabling"); \ + } \ + if (flag_mkernel) \ + { \ + rs6000_default_long_calls = 1; \ + target_flags |= MASK_SOFT_FLOAT; \ + } \ + \ + /* Make -m64 imply -maltivec. Darwin's 64-bit ABI includes \ + Altivec. */ \ + if (!flag_mkernel && !flag_apple_kext \ + && TARGET_64BIT \ + && ! (target_flags_explicit & MASK_ALTIVEC)) \ + target_flags |= MASK_ALTIVEC; \ + \ + /* Unless the user (not the configurer) has explicitly overridden \ + it with -mcpu=G3 or -mno-altivec, then 10.5+ targets default to \ + G4 unless targetting the kernel. */ \ + if (!flag_mkernel \ + && !flag_apple_kext \ + && darwin_macosx_version_min \ + && strverscmp (darwin_macosx_version_min, "10.5") >= 0 \ + && ! (target_flags_explicit & MASK_ALTIVEC) \ + && ! rs6000_select[1].string) \ + { \ + target_flags |= MASK_ALTIVEC; \ + } \ +} 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; \ + 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 "\ -%{gused: -feliminate-unused-debug-symbols %<gused }\ -%{static: %{Zdynamic: %e conflicting code gen style switches are used}}\ -%{!static:%{!mdynamic-no-pic:-fPIC}}" - -/* It's virtually impossible to predict all the possible combinations - of -mcpu and -maltivec and whatnot, so just supply - -force_cpusubtype_ALL if any are seen. Radar 3492132 against the - assembler is asking for a .machine directive so we could get this - really right. */ -#define ASM_SPEC "-arch ppc \ - %{Zforce_cpusubtype_ALL:-force_cpusubtype_ALL} \ - %{!Zforce_cpusubtype_ALL:%{maltivec|mcpu=*|mpowerpc64:-force_cpusubtype_ALL}}" + %{g: %{!fno-eliminate-unused-debug-symbols: -feliminate-unused-debug-symbols }} \ + %{static: %{Zdynamic: %e conflicting code gen style switches are used}}\ + %{!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)}" #undef SUBTARGET_EXTRA_SPECS #define SUBTARGET_EXTRA_SPECS \ - { "darwin_arch", "ppc" }, - -/* The "-faltivec" option should have been called "-maltivec" all along. */ -#define SUBTARGET_OPTION_TRANSLATE_TABLE \ - { "-faltivec", "-maltivec -include altivec.h" }, \ - { "-fno-altivec", "-mno-altivec" }, \ - { "-Waltivec-long-deprecated", "-mwarn-altivec-long" }, \ + { "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 r3 available for allocation. */ +/* 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 @@ -134,9 +209,10 @@ do { \ #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) \ @@ -146,7 +222,7 @@ do { \ /* 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. */ @@ -154,6 +230,10 @@ do { \ #undef FP_SAVE_INLINE #define FP_SAVE_INLINE(FIRST_REG) ((FIRST_REG) < 64) +/* 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 @@ -175,7 +255,8 @@ do { \ "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. */ @@ -199,13 +280,14 @@ do { \ /* 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. */ @@ -233,6 +315,19 @@ do { \ 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) @@ -241,10 +336,12 @@ do { \ #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 @@ -254,9 +351,15 @@ do { \ #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. */ @@ -264,11 +367,11 @@ do { \ #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. @@ -277,8 +380,8 @@ do { \ #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))) \ @@ -308,23 +411,64 @@ do { \ || TREE_CODE (STRUCT) == QUAL_UNION_TYPE) \ && TARGET_ALIGN_NATURAL == 0 \ ? rs6000_special_round_type_align (STRUCT, COMPUTED, SPECIFIED) \ - : (TARGET_ALTIVEC && TREE_CODE (STRUCT) == VECTOR_TYPE) \ + : (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 + +#define MD_UNWIND_SUPPORT "config/rs6000/darwin-unwind.h" + +#define HAS_MD_FALLBACK_FRAME_STATE_FOR 1 + +/* 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 \ + || (darwin_macosx_version_min \ + && 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) |
