diff gcc/config/i386/darwin.h @ 0:a06113de4d67

first commit
author kent <kent@cr.ie.u-ryukyu.ac.jp>
date Fri, 17 Jul 2009 14:47:48 +0900
parents
children 77e2b8dfacca
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/config/i386/darwin.h	Fri Jul 17 14:47:48 2009 +0900
@@ -0,0 +1,302 @@
+/* Target definitions for x86 running Darwin.
+   Copyright (C) 2001, 2002, 2004, 2005, 2006, 2007, 2008
+   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 3, or (at your option)
+any later version.
+
+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 GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
+
+/* Enable Mach-O bits in generic x86 code.  */
+#undef TARGET_MACHO
+#define TARGET_MACHO 1
+
+#define TARGET_VERSION fprintf (stderr, " (i686 Darwin)");
+
+#undef  TARGET_64BIT
+#define TARGET_64BIT OPTION_ISA_64BIT
+
+#ifdef IN_LIBGCC2
+#undef TARGET_64BIT
+#ifdef __x86_64__
+#define TARGET_64BIT 1
+#else
+#define TARGET_64BIT 0
+#endif
+#endif
+
+/* Size of the Obj-C jump buffer.  */
+#define OBJC_JBLEN ((TARGET_64BIT) ? ((9 * 2) + 3 + 16) : (18))
+
+#undef TARGET_FPMATH_DEFAULT
+#define TARGET_FPMATH_DEFAULT (TARGET_SSE ? FPMATH_SSE : FPMATH_387)
+
+#define TARGET_OS_CPP_BUILTINS()                \
+  do                                            \
+    {                                           \
+      builtin_define ("__LITTLE_ENDIAN__");     \
+      darwin_cpp_builtins (pfile);		\
+    }                                           \
+  while (0)
+
+#undef PTRDIFF_TYPE
+#define PTRDIFF_TYPE (TARGET_64BIT ? "long int" : "int")
+
+#undef WCHAR_TYPE
+#define WCHAR_TYPE "int"
+
+#undef WCHAR_TYPE_SIZE
+#define WCHAR_TYPE_SIZE 32
+
+#undef MAX_BITS_PER_WORD
+#define MAX_BITS_PER_WORD 64
+
+#undef FORCE_PREFERRED_STACK_BOUNDARY_IN_MAIN
+#define FORCE_PREFERRED_STACK_BOUNDARY_IN_MAIN (0)
+
+#undef TARGET_KEEPS_VECTOR_ALIGNED_STACK
+#define TARGET_KEEPS_VECTOR_ALIGNED_STACK 1
+
+/* On Darwin, the stack is 128-bit aligned at the point of every call.
+   Failure to ensure this will lead to a crash in the system libraries
+   or dynamic loader.  */
+#undef STACK_BOUNDARY
+#define STACK_BOUNDARY 128
+
+#undef MAIN_STACK_BOUNDARY
+#define MAIN_STACK_BOUNDARY 128
+
+/* Since we'll never want a stack boundary less aligned than 128 bits
+   we need the extra work here otherwise bits of gcc get very grumpy
+   when we ask for lower alignment.  We could just reject values less
+   than 128 bits for Darwin, but it's easier to up the alignment if
+   it's below the minimum.  */
+#undef PREFERRED_STACK_BOUNDARY
+#define PREFERRED_STACK_BOUNDARY			\
+  MAX (STACK_BOUNDARY, ix86_preferred_stack_boundary)
+
+/* We want -fPIC by default, unless we're using -static to compile for
+   the kernel or some such.  */
+
+#undef CC1_SPEC
+#define CC1_SPEC "%(cc1_cpu) \
+  %{!mkernel:%{!static:%{!mdynamic-no-pic:-fPIC}}} \
+  %{!mmacosx-version-min=*:-mmacosx-version-min=%(darwin_minversion)} \
+  %{g: %{!fno-eliminate-unused-debug-symbols: -feliminate-unused-debug-symbols }}"
+
+#undef ASM_SPEC
+#define ASM_SPEC "-arch %(darwin_arch) -force_cpusubtype_ALL"
+
+#define DARWIN_ARCH_SPEC "%{m64:x86_64;:i386}"
+#define DARWIN_SUBARCH_SPEC DARWIN_ARCH_SPEC
+
+/* 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}"
+
+#undef ENDFILE_SPEC
+#define ENDFILE_SPEC \
+  "%{ffast-math|funsafe-math-optimizations:crtfastmath.o%s} \
+   %{mpc32:crtprec32.o%s} \
+   %{mpc64:crtprec64.o%s} \
+   %{mpc80:crtprec80.o%s}"
+
+#undef SUBTARGET_EXTRA_SPECS
+#define SUBTARGET_EXTRA_SPECS                                   \
+  DARWIN_EXTRA_SPECS                                            \
+  { "darwin_arch", DARWIN_ARCH_SPEC },                          \
+  { "darwin_crt2", "" },                                        \
+  { "darwin_subarch", DARWIN_SUBARCH_SPEC },
+
+/* Use the following macro for any Darwin/x86-specific command-line option
+   translation.  */
+#define SUBTARGET_OPTION_TRANSLATE_TABLE \
+  { "", "" }
+
+/* The Darwin assembler mostly follows AT&T syntax.  */
+#undef ASSEMBLER_DIALECT
+#define ASSEMBLER_DIALECT ASM_ATT
+
+/* Define macro used to output shift-double opcodes when the shift
+   count is in %cl.  Some assemblers require %cl as an argument;
+   some don't.  This macro controls what to do: by default, don't
+   print %cl.  */
+
+#define SHIFT_DOUBLE_OMITS_COUNT 0
+
+extern void darwin_x86_file_end (void);
+#undef TARGET_ASM_FILE_END
+#define TARGET_ASM_FILE_END darwin_x86_file_end
+
+/* Define the syntax of pseudo-ops, labels and comments.  */
+
+/* String containing the assembler's comment-starter.  */
+
+#define ASM_COMMENT_START "#"
+
+/* By default, target has a 80387, uses IEEE compatible arithmetic,
+   and returns float values in the 387.  */
+
+#undef TARGET_SUBTARGET_DEFAULT
+#define TARGET_SUBTARGET_DEFAULT (MASK_80387 | MASK_IEEE_FP | MASK_FLOAT_RETURNS | MASK_128BIT_LONG_DOUBLE)
+
+/* For darwin we want to target specific processor features as a minimum,
+   but these unfortunately don't correspond to a specific processor.  */
+#undef TARGET_SUBTARGET32_ISA_DEFAULT
+#define TARGET_SUBTARGET32_ISA_DEFAULT (OPTION_MASK_ISA_MMX		\
+					| OPTION_MASK_ISA_SSE		\
+					| OPTION_MASK_ISA_SSE2)
+
+#undef TARGET_SUBTARGET64_ISA_DEFAULT
+#define TARGET_SUBTARGET64_ISA_DEFAULT (OPTION_MASK_ISA_MMX		\
+					| OPTION_MASK_ISA_SSE		\
+					| OPTION_MASK_ISA_SSE2		\
+					| OPTION_MASK_ISA_SSE3)
+
+/* For now, disable dynamic-no-pic.  We'll need to go through i386.c
+   with a fine-tooth comb looking for refs to flag_pic!  */
+#define MASK_MACHO_DYNAMIC_NO_PIC 0
+#define TARGET_DYNAMIC_NO_PIC	  (target_flags & MASK_MACHO_DYNAMIC_NO_PIC)
+
+#undef GOT_SYMBOL_NAME
+#define GOT_SYMBOL_NAME MACHOPIC_FUNCTION_BASE_NAME
+
+/* Define the syntax of pseudo-ops, labels and comments.  */
+
+#define LPREFIX "L"
+
+/* 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"
+
+/* Assembler pseudos to introduce constants of various size.  */
+
+#define ASM_BYTE_OP "\t.byte\t"
+#define ASM_SHORT "\t.word\t"
+#define ASM_LONG "\t.long\t"
+#define ASM_QUAD "\t.quad\t"
+
+#define SUBTARGET_ENCODE_SECTION_INFO  darwin_encode_section_info
+
+#undef ASM_OUTPUT_ALIGN
+#define ASM_OUTPUT_ALIGN(FILE,LOG)	\
+ do { if ((LOG) != 0)			\
+        {				\
+          if (in_section == text_section) \
+            fprintf (FILE, "\t%s %d,0x90\n", ALIGN_ASM_OP, (LOG)); \
+          else				\
+            fprintf (FILE, "\t%s %d\n", ALIGN_ASM_OP, (LOG)); \
+        }				\
+    } while (0)
+
+/* This says how to output an assembler line
+   to define a global common symbol.  */
+
+#define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED)  \
+( fputs (".comm ", (FILE)),			\
+  assemble_name ((FILE), (NAME)),		\
+  fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED"\n", (ROUNDED)))
+
+/* This says how to output an assembler line
+   to define a local common symbol.  */
+
+#define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED)  \
+( fputs (".lcomm ", (FILE)),			\
+  assemble_name ((FILE), (NAME)),		\
+  fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED"\n", (ROUNDED)))
+
+/* Darwin profiling -- call mcount.  */
+#undef FUNCTION_PROFILER
+#define FUNCTION_PROFILER(FILE, LABELNO)				\
+    do {								\
+      if (MACHOPIC_INDIRECT && !TARGET_64BIT)				\
+	{								\
+	  const char *name = machopic_mcount_stub_name ();		\
+	  fprintf (FILE, "\tcall %s\n", name+1);  /*  skip '&'  */	\
+	  machopic_validate_stub_or_non_lazy_ptr (name);		\
+	}								\
+      else fprintf (FILE, "\tcall mcount\n");				\
+    } while (0)
+
+#define C_COMMON_OVERRIDE_OPTIONS					\
+  do {									\
+    SUBTARGET_C_COMMON_OVERRIDE_OPTIONS;				\
+  } while (0)
+
+/* Darwin on x86_64 uses dwarf-2 by default.  Pre-darwin9 32-bit
+   compiles default to stabs+.  darwin9+ defaults to dwarf-2.  */
+#ifndef DARWIN_PREFER_DWARF
+#undef PREFERRED_DEBUGGING_TYPE
+#define PREFERRED_DEBUGGING_TYPE (TARGET_64BIT ? DWARF2_DEBUG : DBX_DEBUG)
+#endif
+
+/* Darwin uses the standard DWARF register numbers but the default
+   register numbers for STABS.  Fortunately for 64-bit code the
+   default and the standard are the same.  */
+#undef DBX_REGISTER_NUMBER
+#define DBX_REGISTER_NUMBER(n) 					\
+  (TARGET_64BIT ? dbx64_register_map[n]				\
+   : write_symbols == DWARF2_DEBUG ? svr4_dbx_register_map[n]	\
+   : dbx_register_map[n])
+
+/* Unfortunately, the 32-bit EH information also doesn't use the standard
+   DWARF register numbers.  */
+#define DWARF2_FRAME_REG_OUT(n, for_eh)					\
+  (! (for_eh) || write_symbols != DWARF2_DEBUG || TARGET_64BIT ? (n)	\
+   : (n) == 5 ? 4							\
+   : (n) == 4 ? 5							\
+   : (n) >= 11 && (n) <= 18 ? (n) + 1					\
+   : (n))
+
+#undef REGISTER_SUBTARGET_PRAGMAS
+#define REGISTER_SUBTARGET_PRAGMAS() DARWIN_REGISTER_TARGET_PRAGMAS()
+
+#undef TARGET_SET_DEFAULT_TYPE_ATTRIBUTES
+#define TARGET_SET_DEFAULT_TYPE_ATTRIBUTES darwin_set_default_type_attributes
+
+/* For 64-bit, we need to add 4 because @GOTPCREL is relative to the
+   end of the instruction, but without the 4 we'd only have the right
+   address for the start of the instruction.  */
+#undef ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX
+#define ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX(FILE, ENCODING, SIZE, ADDR, DONE)	\
+  if (TARGET_64BIT)				                                \
+    {                                                                           \
+      if ((SIZE) == 4 && ((ENCODING) & 0x70) == DW_EH_PE_pcrel)			\
+        {                                                                       \
+	   fputs (ASM_LONG, FILE);                                              \
+	   assemble_name (FILE, XSTR (ADDR, 0));				\
+	   fputs ("+4@GOTPCREL", FILE);                                         \
+	   goto DONE;                                                           \
+        }									\
+    }										\
+  else                                                                          \
+    {										\
+      if (ENCODING == ASM_PREFERRED_EH_DATA_FORMAT (2, 1))                      \
+        {                                                                       \
+          darwin_non_lazy_pcrel (FILE, ADDR);                                   \
+          goto DONE;								\
+        }                                                                       \
+    }
+
+/* This needs to move since i386 uses the first flag and other flags are
+   used in Mach-O.  */
+#undef MACHO_SYMBOL_FLAG_VARIABLE
+#define MACHO_SYMBOL_FLAG_VARIABLE ((SYMBOL_FLAG_MACH_DEP) << 3)