/* Target definitions for PowerPC running Darwin (Mac OS X).
- Copyright (C) 1997, 2000, 2001 Free Software Foundation, Inc.
+ Copyright (C) 1997, 2000, 2001, 2003, 2004 Free Software Foundation, Inc.
Contributed by Apple Computer Inc.
-This file is part of GNU CC.
+ This file is part of GCC.
-GNU CC 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 option)
-any later version.
+ 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
+ option) any later version.
-GNU CC 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.
+ 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 GNU CC; see the file COPYING. If not, write to
-the Free Software Foundation, 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
+ 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. */
+
+#undef TARGET_VERSION
+#define TARGET_VERSION fprintf (stderr, " (Darwin/PowerPC)");
/* The "Darwin ABI" is mostly like AIX, but with some key differences. */
#define TARGET_TOC 0
#define TARGET_NO_TOC 1
-#define CPP_PREDEFINES "-D__ppc__ -D__NATURAL_ALIGNMENT__ -D__MACH__ -D__BIG_ENDIAN__ -D__APPLE__"
+/* Override the default rs6000 definition. */
+#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__"); \
+ } \
+ 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 { \
+ rs6000_altivec_abi = 1; \
+ rs6000_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"); \
+ 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"); \
+ } \
+} 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 "%{!static:-fPIC}"
-
+#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}}"
+
+#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}}"
+
+#undef SUBTARGET_EXTRA_SPECS
+#define SUBTARGET_EXTRA_SPECS \
+ { "darwin_arch", "%{m64:ppc64;:ppc}" }, \
+ { "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
-#undef TARGET_DEFAULT
-#define TARGET_DEFAULT (MASK_POWERPC | MASK_MULTIPLE | MASK_NEW_MNEMONICS \
- | MASK_NO_FP_IN_TOC | MASK_NO_SUM_IN_TOC)
-
/* Base register for access to local variables of the function. */
#undef FRAME_POINTER_REGNUM
#define FRAME_POINTER_REGNUM 30
-#undef PIC_OFFSET_TABLE_REGNUM
-#define PIC_OFFSET_TABLE_REGNUM 31
-
-#undef STACK_BOUNDARY
-#define STACK_BOUNDARY 128
+#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. */
(RS6000_ALIGN (current_function_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)
-/* 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" \
+}
/* This outputs NAME to FILE. */
#undef RS6000_OUTPUT_BASENAME
#define RS6000_OUTPUT_BASENAME(FILE, NAME) \
- assemble_name (FILE, NAME);
-
-/* Output before instructions. */
-/* This is how to output the definition of a user-level label named NAME,
- such as the label on a static function or variable NAME. */
-
-#define ASM_OUTPUT_LABEL(FILE,NAME) \
- do { assemble_name (FILE, NAME); fputs (":\n", FILE); } while (0)
+ assemble_name (FILE, NAME)
-/* This is how to output a command to make the user-level label named NAME
- defined for reference from other files. */
-
-#undef ASM_GLOBALIZE_LABEL
-#define ASM_GLOBALIZE_LABEL(FILE,NAME) \
- do { fputs ("\t.globl ", FILE); \
- RS6000_OUTPUT_BASENAME (FILE, NAME); putc ('\n', FILE);} while (0)
+/* 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. */
#define ASM_OUTPUT_INTERNAL_LABEL_PREFIX(FILE,PREFIX) \
fprintf (FILE, "%s", PREFIX)
-#undef TEXT_SECTION_ASM_OP
-#define TEXT_SECTION_ASM_OP ".text"
-
-/* Output before writable data. */
-
-#undef DATA_SECTION_ASM_OP
-#define DATA_SECTION_ASM_OP ".data"
-
/* 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), ",%d\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. */
-#define ASM_OUTPUT_SKIP(FILE,SIZE) \
- fprintf (FILE, "\t.space %d\n", SIZE)
+#undef ASM_COMMENT_START
+#define ASM_COMMENT_START ";"
/* FP save and restore routines. */
#define SAVE_FP_PREFIX "._savef"
#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)
+
/* Generate insns to call the profiler. */
#define PROFILE_HOOK(LABEL) output_profile_hook (LABEL)
#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
+
/* Since Darwin doesn't do TOCs, stub this out. */
#define ASM_OUTPUT_SPECIAL_POOL_ENTRY_P(X, 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
a SYMBOL_REF. */
#undef PREFERRED_RELOAD_CLASS
-#define PREFERRED_RELOAD_CLASS(X,CLASS) \
- (((GET_CODE (X) == CONST_DOUBLE \
- && GET_MODE_CLASS (GET_MODE (X)) == MODE_FLOAT) \
- ? NO_REGS \
- : (GET_MODE_CLASS (GET_MODE (X)) == MODE_INT \
- && (CLASS) == NON_SPECIAL_REGS) \
- ? GENERAL_REGS \
- : (GET_CODE (X) == SYMBOL_REF || GET_CODE (X) == HIGH) \
- ? BASE_REGS \
- : (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))
/* 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)))
+
+/* 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) \
+ : 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. */
+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
+
+#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)
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