/* Definitions of various defaults for tm.h macros.
- Copyright (C) 1992, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
- 2005, 2007, 2008, 2009, 2010, 2011, 2012
- Free Software Foundation, Inc.
+ Copyright (C) 1992-2021 Free Software Foundation, Inc.
Contributed by Ron Guilmette (rfg@monkeys.com)
This file is part of GCC.
int c = p[i]; \
if (c == '\"' || c == '\\') \
putc ('\\', asm_out_file); \
- if (ISPRINT(c)) \
+ if (ISPRINT (c)) \
putc (c, asm_out_file); \
else \
{ \
The VAX assembler fails to stop reading the escape \
after three digits, so this is the only way we \
can get it to parse the data properly. */ \
- if (i < thissize - 1 && ISDIGIT(p[i + 1])) \
+ if (i < thissize - 1 && ISDIGIT (p[i + 1])) \
fprintf (asm_out_file, "\"\n\t.ascii \""); \
} \
} \
{ \
fprintf ((FILE), "\t%s\t", TLS_COMMON_ASM_OP); \
assemble_name ((FILE), (NAME)); \
- fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED",%u\n", \
+ fprintf ((FILE), "," HOST_WIDE_INT_PRINT_UNSIGNED",%u\n", \
(SIZE), DECL_ALIGN (DECL) / BITS_PER_UNIT); \
} \
while (0)
do { \
fputs (user_label_prefix, (FILE)); \
fputs ((NAME), (FILE)); \
- } while (0);
+ } while (0)
#endif
/* Allow target to print debug info labels specially. This is useful for
#endif
#endif
+/* This determines whether or not we support marking sections with
+ SHF_GNU_RETAIN flag. Also require .init_array/.fini_array section
+ for constructors and destructors. */
+#ifndef SUPPORTS_SHF_GNU_RETAIN
+#if HAVE_GAS_SHF_GNU_RETAIN && HAVE_INITFINI_ARRAY_SUPPORT
+#define SUPPORTS_SHF_GNU_RETAIN 1
+#else
+#define SUPPORTS_SHF_GNU_RETAIN 0
+#endif
+#endif
+
/* This determines whether or not we support link-once semantics. */
#ifndef SUPPORTS_ONE_ONLY
#ifdef MAKE_DECL_ONE_ONLY
/* If we have named sections, and we're using crtstuff to run ctors,
use them for registering eh frame information. */
#if defined (TARGET_ASM_NAMED_SECTION) && DWARF2_UNWIND_INFO \
- && !defined(EH_FRAME_IN_DATA_SECTION)
+ && !defined (EH_FRAME_THROUGH_COLLECT2)
#ifndef EH_FRAME_SECTION_NAME
#define EH_FRAME_SECTION_NAME ".eh_frame"
#endif
#endif
#endif
-/* If we have named section and we support weak symbols, then use the
- .jcr section for recording java classes which need to be registered
- at program start-up time. */
-#if defined (TARGET_ASM_NAMED_SECTION) && SUPPORTS_WEAK
-#ifndef JCR_SECTION_NAME
-#define JCR_SECTION_NAME ".jcr"
-#endif
+/* Provide defaults for stuff that may not be defined when using
+ sjlj exceptions. */
+#ifndef EH_RETURN_DATA_REGNO
+#define EH_RETURN_DATA_REGNO(N) INVALID_REGNUM
#endif
-/* This decision to use a .jcr section can be overridden by defining
- USE_JCR_SECTION to 0 in target file. This is necessary if target
- can define JCR_SECTION_NAME but does not have crtstuff or
- linker support for .jcr section. */
-#ifndef TARGET_USE_JCR_SECTION
-#ifdef JCR_SECTION_NAME
-#define TARGET_USE_JCR_SECTION 1
-#else
-#define TARGET_USE_JCR_SECTION 0
+/* Offset between the eh handler address and entry in eh tables. */
+#ifndef RETURN_ADDR_OFFSET
+#define RETURN_ADDR_OFFSET 0
#endif
+
+#ifndef MASK_RETURN_ADDR
+#define MASK_RETURN_ADDR NULL_RTX
#endif
/* Number of hardware registers that go into the DWARF-2 unwind info.
#define DWARF_FRAME_REGNUM(REG) DBX_REGISTER_NUMBER (REG)
#endif
+/* The mapping from dwarf CFA reg number to internal dwarf reg numbers. */
+#ifndef DWARF_REG_TO_UNWIND_COLUMN
+#define DWARF_REG_TO_UNWIND_COLUMN(REGNO) (REGNO)
+#endif
+
/* Map register numbers held in the call frame info that gcc has
collected using DWARF_FRAME_REGNUM to those that should be output in
.debug_frame and .eh_frame. */
Dwarf 2 addresses need to be larger than the architecture's
pointers. */
#ifndef DWARF2_ADDR_SIZE
-#define DWARF2_ADDR_SIZE (POINTER_SIZE / BITS_PER_UNIT)
+#define DWARF2_ADDR_SIZE ((POINTER_SIZE + BITS_PER_UNIT - 1) / BITS_PER_UNIT)
#endif
/* The size in bytes of a DWARF field indicating an offset or length
your target, you should override these values by defining the
appropriate symbols in your tm.h file. */
-#ifndef BITS_PER_UNIT
-#define BITS_PER_UNIT 8
-#endif
-
#ifndef BITS_PER_WORD
#define BITS_PER_WORD (BITS_PER_UNIT * UNITS_PER_WORD)
#endif
affect C++ name mangling because in C++ these are distinct types
not typedefs. */
+#ifndef CHAR8_TYPE
+#define CHAR8_TYPE "unsigned char"
+#endif
+
#ifdef UINT_LEAST16_TYPE
#define CHAR16_TYPE UINT_LEAST16_TYPE
#else
#ifndef POINTER_SIZE
#define POINTER_SIZE BITS_PER_WORD
#endif
+#ifndef POINTER_SIZE_UNITS
+#define POINTER_SIZE_UNITS ((POINTER_SIZE + BITS_PER_UNIT - 1) / BITS_PER_UNIT)
+#endif
+
#ifndef PIC_OFFSET_TABLE_REGNUM
#define PIC_OFFSET_TABLE_REGNUM INVALID_REGNUM
#define NEXT_OBJC_RUNTIME 0
#endif
-/* Supply a default definition for PUSH_ARGS. */
-#ifndef PUSH_ARGS
-#ifdef PUSH_ROUNDING
-#define PUSH_ARGS !ACCUMULATE_OUTGOING_ARGS
-#else
-#define PUSH_ARGS 0
-#endif
-#endif
-
/* Decide whether a function's arguments should be processed
from first to last or from last to first.
#ifndef PUSH_ARGS_REVERSED
#if defined (STACK_GROWS_DOWNWARD) != defined (ARGS_GROW_DOWNWARD)
-#define PUSH_ARGS_REVERSED PUSH_ARGS
+#define PUSH_ARGS_REVERSED targetm.calls.push_argument (0)
#endif
#endif
#endif
#endif
+/* Decide whether target supports aliases. */
+#ifndef TARGET_SUPPORTS_ALIASES
+#ifdef ASM_OUTPUT_DEF
+#define TARGET_SUPPORTS_ALIASES 1
+#else
+#define TARGET_SUPPORTS_ALIASES 0
+#endif
+#endif
+
/* Select a format to encode pointers in exception handling data. We
prefer those that result in fewer dynamic relocations. Assume no
special support here and encode direct references. */
/* If more than one debugging type is supported, you must define
PREFERRED_DEBUGGING_TYPE to choose the default. */
-#if 1 < (defined (DBX_DEBUGGING_INFO) + defined (SDB_DEBUGGING_INFO) \
+#if 1 < (defined (DBX_DEBUGGING_INFO) \
+ defined (DWARF2_DEBUGGING_INFO) + defined (XCOFF_DEBUGGING_INFO) \
+ defined (VMS_DEBUGGING_INFO))
#ifndef PREFERRED_DEBUGGING_TYPE
#elif defined DBX_DEBUGGING_INFO
#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
-#elif defined SDB_DEBUGGING_INFO
-#define PREFERRED_DEBUGGING_TYPE SDB_DEBUG
-
-#elif defined DWARF2_DEBUGGING_INFO
+#elif defined DWARF2_DEBUGGING_INFO || defined DWARF2_LINENO_DEBUGGING_INFO
#define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
#elif defined VMS_DEBUGGING_INFO
#define PREFERRED_DEBUGGING_TYPE NO_DEBUG
#endif
-#ifndef LARGEST_EXPONENT_IS_NORMAL
-#define LARGEST_EXPONENT_IS_NORMAL(SIZE) 0
-#endif
-
-#ifndef ROUND_TOWARDS_ZERO
-#define ROUND_TOWARDS_ZERO 0
-#endif
-
#ifndef FLOAT_LIB_COMPARE_RETURNS_BOOL
#define FLOAT_LIB_COMPARE_RETURNS_BOOL(MODE, COMPARISON) false
#endif
#define REG_WORDS_BIG_ENDIAN WORDS_BIG_ENDIAN
#endif
-#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
#define TARGET_DEC_EVAL_METHOD 2
#define DEFAULT_USE_CXA_ATEXIT 0
#endif
-/* If none of these macros are defined, the port must use the new
- technique of defining constraints in the machine description.
- tm_p.h will define those macros that machine-independent code
- still uses. */
-#if !defined CONSTRAINT_LEN \
- && !defined REG_CLASS_FROM_LETTER \
- && !defined REG_CLASS_FROM_CONSTRAINT \
- && !defined CONST_OK_FOR_LETTER_P \
- && !defined CONST_OK_FOR_CONSTRAINT_P \
- && !defined CONST_DOUBLE_OK_FOR_LETTER_P \
- && !defined CONST_DOUBLE_OK_FOR_CONSTRAINT_P \
- && !defined EXTRA_CONSTRAINT \
- && !defined EXTRA_CONSTRAINT_STR \
- && !defined EXTRA_MEMORY_CONSTRAINT \
- && !defined EXTRA_ADDRESS_CONSTRAINT
-
-#define USE_MD_CONSTRAINTS
-
#if GCC_VERSION >= 3000 && defined IN_GCC
/* These old constraint macros shouldn't appear anywhere in a
configuration using MD constraint definitions. */
-#pragma GCC poison REG_CLASS_FROM_LETTER CONST_OK_FOR_LETTER_P \
- CONST_DOUBLE_OK_FOR_LETTER_P EXTRA_CONSTRAINT
-#endif
-
-#else /* old constraint mechanism in use */
-
-/* Determine whether extra constraint letter should be handled
- via address reload (like 'o'). */
-#ifndef EXTRA_MEMORY_CONSTRAINT
-#define EXTRA_MEMORY_CONSTRAINT(C,STR) 0
-#endif
-
-/* Determine whether extra constraint letter should be handled
- as an address (like 'p'). */
-#ifndef EXTRA_ADDRESS_CONSTRAINT
-#define EXTRA_ADDRESS_CONSTRAINT(C,STR) 0
-#endif
-
-/* When a port defines CONSTRAINT_LEN, it should use DEFAULT_CONSTRAINT_LEN
- for all the characters that it does not want to change, so things like the
- 'length' of a digit in a matching constraint is an implementation detail,
- and not part of the interface. */
-#define DEFAULT_CONSTRAINT_LEN(C,STR) 1
-
-#ifndef CONSTRAINT_LEN
-#define CONSTRAINT_LEN(C,STR) DEFAULT_CONSTRAINT_LEN (C, STR)
-#endif
-
-#if defined (CONST_OK_FOR_LETTER_P) && ! defined (CONST_OK_FOR_CONSTRAINT_P)
-#define CONST_OK_FOR_CONSTRAINT_P(VAL,C,STR) CONST_OK_FOR_LETTER_P (VAL, C)
-#endif
-
-#if defined (CONST_DOUBLE_OK_FOR_LETTER_P) && ! defined (CONST_DOUBLE_OK_FOR_CONSTRAINT_P)
-#define CONST_DOUBLE_OK_FOR_CONSTRAINT_P(OP,C,STR) \
- CONST_DOUBLE_OK_FOR_LETTER_P (OP, C)
-#endif
-
-#ifndef REG_CLASS_FROM_CONSTRAINT
-#define REG_CLASS_FROM_CONSTRAINT(C,STR) REG_CLASS_FROM_LETTER (C)
-#endif
-
-#if defined (EXTRA_CONSTRAINT) && ! defined (EXTRA_CONSTRAINT_STR)
-#define EXTRA_CONSTRAINT_STR(OP, C,STR) EXTRA_CONSTRAINT (OP, C)
-#endif
-
-#endif /* old constraint mechanism in use */
-
-/* Determine whether the entire c99 runtime
- is present in the runtime library. */
-#ifndef TARGET_C99_FUNCTIONS
-#define TARGET_C99_FUNCTIONS 0
-#endif
-
-/* Determine whether the target runtime library has
- a sincos implementation following the GNU extension. */
-#ifndef TARGET_HAS_SINCOS
-#define TARGET_HAS_SINCOS 0
#endif
/* Determin whether the target runtime library is Bionic */
#define MOVE_MAX_PIECES MOVE_MAX
#endif
+/* STORE_MAX_PIECES is the number of bytes at a time that we can
+ store efficiently. Due to internal GCC limitations, this is
+ MOVE_MAX_PIECES limited by the number of bytes GCC can represent
+ for an immediate constant. */
+
+#ifndef STORE_MAX_PIECES
+#define STORE_MAX_PIECES MIN (MOVE_MAX_PIECES, 2 * sizeof (HOST_WIDE_INT))
+#endif
+
+/* Likewise for block comparisons. */
+#ifndef COMPARE_MAX_PIECES
+#define COMPARE_MAX_PIECES MOVE_MAX_PIECES
+#endif
+
#ifndef MAX_MOVE_MAX
#define MAX_MOVE_MAX MOVE_MAX
#endif
#define LOCAL_REGNO(REGNO) 0
#endif
+#ifndef HONOR_REG_ALLOC_ORDER
+#define HONOR_REG_ALLOC_ORDER 0
+#endif
+
/* EXIT_IGNORE_STACK should be nonzero if, when returning from a function,
the stack pointer does not matter. The value is tested only in
functions that have frame pointers. */
#define CASE_VECTOR_PC_RELATIVE 0
#endif
+/* Force minimum alignment to be able to use the least significant bits
+ for distinguishing descriptor addresses from code addresses. */
+#define FUNCTION_ALIGNMENT(ALIGN) \
+ (lang_hooks.custom_function_descriptors \
+ && targetm.calls.custom_function_descriptors > 0 \
+ ? MAX ((ALIGN), \
+ 2 * targetm.calls.custom_function_descriptors * BITS_PER_UNIT)\
+ : (ALIGN))
+
/* Assume that trampolines need function alignment. */
#ifndef TRAMPOLINE_ALIGNMENT
-#define TRAMPOLINE_ALIGNMENT FUNCTION_BOUNDARY
+#define TRAMPOLINE_ALIGNMENT FUNCTION_ALIGNMENT (FUNCTION_BOUNDARY)
#endif
/* Register mappings for target machines without register windows. */
#define FRAME_GROWS_DOWNWARD 0
#endif
+#ifndef RETURN_ADDR_IN_PREVIOUS_FRAME
+#define RETURN_ADDR_IN_PREVIOUS_FRAME 0
+#endif
+
/* On most machines, the CFA coincides with the first incoming parm. */
#ifndef ARG_POINTER_CFA_OFFSET
#define ARG_POINTER_CFA_OFFSET(FNDECL) \
#define ATTRIBUTE_ALIGNED_VALUE BIGGEST_ALIGNMENT
#endif
-/* Many ports have no mode-dependent addresses (except possibly autoincrement
- and autodecrement addresses, which are handled by target-independent code
- in recog.c). */
-#ifndef GO_IF_MODE_DEPENDENT_ADDRESS
-#define GO_IF_MODE_DEPENDENT_ADDRESS(X, WIN)
-#endif
-
/* For most ports anything that evaluates to a constant symbolic
or integer value is acceptable as a constant address. */
#ifndef CONSTANT_ADDRESS_P
#define DEFAULT_PCC_STRUCT_RETURN 1
#endif
+#ifndef PCC_BITFIELD_TYPE_MATTERS
+#define PCC_BITFIELD_TYPE_MATTERS false
+#endif
+
+#ifndef INSN_SETS_ARE_DELAYED
+#define INSN_SETS_ARE_DELAYED(INSN) false
+#endif
+
+#ifndef INSN_REFERENCES_ARE_DELAYED
+#define INSN_REFERENCES_ARE_DELAYED(INSN) false
+#endif
+
+#ifndef NO_FUNCTION_CSE
+#define NO_FUNCTION_CSE false
+#endif
+
+#ifndef HARD_REGNO_RENAME_OK
+#define HARD_REGNO_RENAME_OK(FROM, TO) true
+#endif
+
+#ifndef EPILOGUE_USES
+#define EPILOGUE_USES(REG) false
+#endif
+
+#ifndef ARGS_GROW_DOWNWARD
+#define ARGS_GROW_DOWNWARD 0
+#endif
+
+#ifndef STACK_GROWS_DOWNWARD
+#define STACK_GROWS_DOWNWARD 0
+#endif
+
+#ifndef STACK_PUSH_CODE
+#if STACK_GROWS_DOWNWARD
+#define STACK_PUSH_CODE PRE_DEC
+#else
+#define STACK_PUSH_CODE PRE_INC
+#endif
+#endif
+
+/* Default value for flag_pie when flag_pie is initialized to -1:
+ --enable-default-pie: Default flag_pie to -fPIE.
+ --disable-default-pie: Default flag_pie to 0.
+ */
+#ifdef ENABLE_DEFAULT_PIE
+# ifndef DEFAULT_FLAG_PIE
+# define DEFAULT_FLAG_PIE 2
+# endif
+#else
+# define DEFAULT_FLAG_PIE 0
+#endif
+
+#ifndef SWITCHABLE_TARGET
+#define SWITCHABLE_TARGET 0
+#endif
+
+/* If the target supports integers that are wider than two
+ HOST_WIDE_INTs on the host compiler, then the target should define
+ TARGET_SUPPORTS_WIDE_INT and make the appropriate fixups.
+ Otherwise the compiler really is not robust. */
+#ifndef TARGET_SUPPORTS_WIDE_INT
+#define TARGET_SUPPORTS_WIDE_INT 0
+#endif
+
+#ifndef SHORT_IMMEDIATES_SIGN_EXTEND
+#define SHORT_IMMEDIATES_SIGN_EXTEND 0
+#endif
+
+#ifndef WORD_REGISTER_OPERATIONS
+#define WORD_REGISTER_OPERATIONS 0
+#endif
+
+#ifndef LOAD_EXTEND_OP
+#define LOAD_EXTEND_OP(M) UNKNOWN
+#endif
+
+#ifndef INITIAL_FRAME_ADDRESS_RTX
+#define INITIAL_FRAME_ADDRESS_RTX NULL
+#endif
+
+#ifndef SETUP_FRAME_ADDRESSES
+#define SETUP_FRAME_ADDRESSES() do { } while (0)
+#endif
+
+#ifndef DYNAMIC_CHAIN_ADDRESS
+#define DYNAMIC_CHAIN_ADDRESS(x) (x)
+#endif
+
+#ifndef FRAME_ADDR_RTX
+#define FRAME_ADDR_RTX(x) (x)
+#endif
+
+#ifndef REVERSE_CONDITION
+#define REVERSE_CONDITION(code, mode) reverse_condition (code)
+#endif
+
+#ifndef TARGET_PECOFF
+#define TARGET_PECOFF 0
+#endif
+
+#ifndef TARGET_COFF
+#define TARGET_COFF 0
+#endif
+
+#ifndef EH_RETURN_HANDLER_RTX
+#define EH_RETURN_HANDLER_RTX NULL
+#endif
+
#ifdef GCC_INSN_FLAGS_H
/* Dependent default target macro definitions
#endif
/* If a memory-to-memory move would take MOVE_RATIO or more simple
- move-instruction sequences, we will do a movmem or libcall instead. */
+ move-instruction sequences, we will do a cpymem or libcall instead. */
#ifndef MOVE_RATIO
-#if defined (HAVE_movmemqi) || defined (HAVE_movmemhi) || defined (HAVE_movmemsi) || defined (HAVE_movmemdi) || defined (HAVE_movmemti)
+#if defined (HAVE_cpymemqi) || defined (HAVE_cpymemhi) || defined (HAVE_cpymemsi) || defined (HAVE_cpymemdi) || defined (HAVE_cpymemti)
#define MOVE_RATIO(speed) 2
#else
/* If we are optimizing for space (-Os), cut down the default move ratio. */
#endif
/* If a memory set (to value other than zero) operation would take
- SET_RATIO or more simple move-instruction sequences, we will do a movmem
+ SET_RATIO or more simple move-instruction sequences, we will do a setmem
or libcall instead. */
#ifndef SET_RATIO
-#define SET_RATIO(speed) MOVE_RATIO(speed)
-#endif
-
-/* Supply a default definition for FUNCTION_ARG_PADDING:
- usually pad upward, but pad short args downward on
- big-endian machines. */
-
-#define DEFAULT_FUNCTION_ARG_PADDING(MODE, TYPE) \
- (! BYTES_BIG_ENDIAN \
- ? upward \
- : (((MODE) == BLKmode \
- ? ((TYPE) && TREE_CODE (TYPE_SIZE (TYPE)) == INTEGER_CST \
- && int_size_in_bytes (TYPE) < (PARM_BOUNDARY / BITS_PER_UNIT)) \
- : GET_MODE_BITSIZE (MODE) < PARM_BOUNDARY) \
- ? downward : upward))
-
-#ifndef FUNCTION_ARG_PADDING
-#define FUNCTION_ARG_PADDING(MODE, TYPE) \
- DEFAULT_FUNCTION_ARG_PADDING ((MODE), (TYPE))
+#define SET_RATIO(speed) MOVE_RATIO (speed)
#endif
/* Supply a default definition of STACK_SAVEAREA_MODE for emit_stack_save.
#define STACK_SIZE_MODE word_mode
#endif
+/* Default value for flag_stack_protect when flag_stack_protect is initialized to -1:
+ --enable-default-ssp: Default flag_stack_protect to -fstack-protector-strong.
+ --disable-default-ssp: Default flag_stack_protect to 0.
+ */
+#ifdef ENABLE_DEFAULT_SSP
+# ifndef DEFAULT_FLAG_SSP
+# define DEFAULT_FLAG_SSP 3
+# endif
+#else
+# define DEFAULT_FLAG_SSP 0
+#endif
+
/* Provide default values for the macros controlling stack checking. */
/* The default is neither full builtin stack checking... */
#define STACK_OLD_CHECK_PROTECT STACK_CHECK_PROTECT
#else
#define STACK_OLD_CHECK_PROTECT \
- (targetm_common.except_unwind_info (&global_options) == UI_SJLJ \
+ (!global_options.x_flag_exceptions \
? 75 * UNITS_PER_WORD \
- : 8 * 1024)
+ : targetm_common.except_unwind_info (&global_options) == UI_SJLJ \
+ ? 4 * 1024 \
+ : 8 * 1024)
#endif
/* Minimum amount of stack required to recover from an anticipated stack
of stack required to propagate an exception. */
#ifndef STACK_CHECK_PROTECT
#define STACK_CHECK_PROTECT \
- (targetm_common.except_unwind_info (&global_options) == UI_SJLJ \
- ? 75 * UNITS_PER_WORD \
- : 12 * 1024)
+ (!global_options.x_flag_exceptions \
+ ? 4 * 1024 \
+ : targetm_common.except_unwind_info (&global_options) == UI_SJLJ \
+ ? 8 * 1024 \
+ : 12 * 1024)
#endif
/* Make the maximum frame size be the largest we can and still only need
#define TARGET_VTABLE_USES_DESCRIPTORS 0
#endif
-#ifndef SWITCHABLE_TARGET
-#define SWITCHABLE_TARGET 0
+#endif /* GCC_INSN_FLAGS_H */
+
+#ifndef DWARF_GNAT_ENCODINGS_DEFAULT
+#define DWARF_GNAT_ENCODINGS_DEFAULT DWARF_GNAT_ENCODINGS_GDB
#endif
-#endif /* GCC_INSN_FLAGS_H */
+#ifndef USED_FOR_TARGET
+/* Done this way to keep gengtype happy. */
+#if BITS_PER_UNIT == 8
+#define TARGET_UNIT uint8_t
+#elif BITS_PER_UNIT == 16
+#define TARGET_UNIT uint16_t
+#elif BITS_PER_UNIT == 32
+#define TARGET_UNIT uint32_t
+#else
+#error Unknown BITS_PER_UNIT
+#endif
+typedef TARGET_UNIT target_unit;
+#endif
#endif /* ! GCC_DEFAULTS_H */
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