/* Definitions of various defaults for tm.h macros.
Copyright (C) 1992, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
- 2005, 2007
+ 2005, 2007, 2008, 2009
Free Software Foundation, Inc.
Contributed by Ron Guilmette (rfg@monkeys.com)
#define PUSH_ARGS_REVERSED 0
#endif
+/* Default value for the alignment (in bits) a C conformant malloc has to
+ provide. This default is intended to be safe and always correct. */
+#ifndef MALLOC_ABI_ALIGNMENT
+#define MALLOC_ABI_ALIGNMENT BITS_PER_WORD
+#endif
+
/* If PREFERRED_STACK_BOUNDARY is not defined, set it to STACK_BOUNDARY.
STACK_BOUNDARY is required. */
#ifndef PREFERRED_STACK_BOUNDARY
#define PREFERRED_STACK_BOUNDARY STACK_BOUNDARY
#endif
+/* Set INCOMING_STACK_BOUNDARY to PREFERRED_STACK_BOUNDARY if it is not
+ defined. */
+#ifndef INCOMING_STACK_BOUNDARY
+#define INCOMING_STACK_BOUNDARY PREFERRED_STACK_BOUNDARY
+#endif
+
#ifndef TARGET_DEFAULT_PACK_STRUCT
#define TARGET_DEFAULT_PACK_STRUCT 0
#endif
#define PREFERRED_DEBUGGING_TYPE NO_DEBUG
#endif
-/* Define codes for all the float formats that we know of. */
-#define UNKNOWN_FLOAT_FORMAT 0
-#define IEEE_FLOAT_FORMAT 1
-#define VAX_FLOAT_FORMAT 2
-#define C4X_FLOAT_FORMAT 3
-
-/* Default to IEEE float if not specified. Nearly all machines use it. */
-#ifndef TARGET_FLOAT_FORMAT
-#define TARGET_FLOAT_FORMAT IEEE_FLOAT_FORMAT
-#endif
-
#ifndef LARGEST_EXPONENT_IS_NORMAL
#define LARGEST_EXPONENT_IS_NORMAL(SIZE) 0
#endif
#define ROUND_TOWARDS_ZERO 0
#endif
-#ifndef MODE_HAS_NANS
-#define MODE_HAS_NANS(MODE) \
- (FLOAT_MODE_P (MODE) \
- && TARGET_FLOAT_FORMAT == IEEE_FLOAT_FORMAT \
- && !LARGEST_EXPONENT_IS_NORMAL (GET_MODE_BITSIZE (MODE)))
-#endif
-
-#ifndef MODE_HAS_INFINITIES
-#define MODE_HAS_INFINITIES(MODE) \
- (FLOAT_MODE_P (MODE) \
- && TARGET_FLOAT_FORMAT == IEEE_FLOAT_FORMAT \
- && !LARGEST_EXPONENT_IS_NORMAL (GET_MODE_BITSIZE (MODE)))
-#endif
-
-#ifndef MODE_HAS_SIGNED_ZEROS
-#define MODE_HAS_SIGNED_ZEROS(MODE) \
- (FLOAT_MODE_P (MODE) && TARGET_FLOAT_FORMAT == IEEE_FLOAT_FORMAT)
-#endif
-
-#ifndef MODE_HAS_SIGN_DEPENDENT_ROUNDING
-#define MODE_HAS_SIGN_DEPENDENT_ROUNDING(MODE) \
- (FLOAT_MODE_P (MODE) \
- && TARGET_FLOAT_FORMAT == IEEE_FLOAT_FORMAT \
- && !ROUND_TOWARDS_ZERO)
-#endif
-
#ifndef FLOAT_LIB_COMPARE_RETURNS_BOOL
#define FLOAT_LIB_COMPARE_RETURNS_BOOL(MODE, COMPARISON) false
#endif
#define FLOAT_WORDS_BIG_ENDIAN WORDS_BIG_ENDIAN
#endif
-#ifndef TARGET_FLT_EVAL_METHOD
+#ifdef TARGET_FLT_EVAL_METHOD
+#define TARGET_FLT_EVAL_METHOD_NON_DEFAULT 1
+#else
#define TARGET_FLT_EVAL_METHOD 0
+#define TARGET_FLT_EVAL_METHOD_NON_DEFAULT 0
#endif
#ifndef TARGET_DEC_EVAL_METHOD
/* By default, only attempt to parallelize bitwise operations, and
possibly adds/subtracts using bit-twiddling. */
#ifndef UNITS_PER_SIMD_WORD
-#define UNITS_PER_SIMD_WORD UNITS_PER_WORD
+#define UNITS_PER_SIMD_WORD(MODE) UNITS_PER_WORD
#endif
/* Determine whether __cxa_atexit, rather than atexit, is used to
#define LEGITIMATE_PIC_OPERAND_P(X) 1
#endif
+#ifndef TARGET_MEM_CONSTRAINT
+#define TARGET_MEM_CONSTRAINT 'm'
+#endif
+
#ifndef REVERSIBLE_CC_MODE
#define REVERSIBLE_CC_MODE(MODE) 0
#endif
#endif
#ifndef OUTGOING_REG_PARM_STACK_SPACE
-#define OUTGOING_REG_PARM_STACK_SPACE 0
+#define OUTGOING_REG_PARM_STACK_SPACE(FNTYPE) 0
+#endif
+
+/* MAX_STACK_ALIGNMENT is the maximum stack alignment guaranteed by
+ the backend. MAX_SUPPORTED_STACK_ALIGNMENT is the maximum best
+ effort stack alignment supported by the backend. If the backend
+ supports stack alignment, MAX_SUPPORTED_STACK_ALIGNMENT and
+ MAX_STACK_ALIGNMENT are the same. Otherwise, the incoming stack
+ boundary will limit the maximum guaranteed stack alignment. */
+#ifdef MAX_STACK_ALIGNMENT
+#define MAX_SUPPORTED_STACK_ALIGNMENT MAX_STACK_ALIGNMENT
+#else
+#define MAX_STACK_ALIGNMENT STACK_BOUNDARY
+#define MAX_SUPPORTED_STACK_ALIGNMENT PREFERRED_STACK_BOUNDARY
+#endif
+
+#define SUPPORTS_STACK_ALIGNMENT (MAX_STACK_ALIGNMENT > STACK_BOUNDARY)
+
+#ifndef LOCAL_ALIGNMENT
+#define LOCAL_ALIGNMENT(TYPE, ALIGNMENT) ALIGNMENT
+#endif
+
+#ifndef STACK_SLOT_ALIGNMENT
+#define STACK_SLOT_ALIGNMENT(TYPE,MODE,ALIGN) \
+ ((TYPE) ? LOCAL_ALIGNMENT ((TYPE), (ALIGN)) : (ALIGN))
+#endif
+
+#ifndef LOCAL_DECL_ALIGNMENT
+#define LOCAL_DECL_ALIGNMENT(DECL) \
+ LOCAL_ALIGNMENT (TREE_TYPE (DECL), DECL_ALIGN (DECL))
+#endif
+
+/* Alignment value for attribute ((aligned)). */
+#ifndef ATTRIBUTE_ALIGNED_VALUE
+#define ATTRIBUTE_ALIGNED_VALUE BIGGEST_ALIGNMENT
#endif
#endif /* ! GCC_DEFAULTS_H */