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defaults.h
Go to the documentation of this file.
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/* Definitions of various defaults for tm.h macros.
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Copyright (C) 1992-2013 Free Software Foundation, Inc.
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Contributed by Ron Guilmette (rfg@monkeys.com)
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3, or (at your option) any later
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License and
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a copy of the GCC Runtime Library Exception along with this program;
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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<http://www.gnu.org/licenses/>. */
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#ifndef GCC_DEFAULTS_H
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#define GCC_DEFAULTS_H
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/* How to start an assembler comment. */
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#ifndef ASM_COMMENT_START
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#define ASM_COMMENT_START ";#"
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#endif
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/* Store in OUTPUT a string (made with alloca) containing an
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assembler-name for a local static variable or function named NAME.
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LABELNO is an integer which is different for each call. */
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#ifndef ASM_PN_FORMAT
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# ifndef NO_DOT_IN_LABEL
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# define ASM_PN_FORMAT "%s.%lu"
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# else
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# ifndef NO_DOLLAR_IN_LABEL
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# define ASM_PN_FORMAT "%s$%lu"
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# else
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# define ASM_PN_FORMAT "__%s_%lu"
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# endif
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# endif
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#endif
/* ! ASM_PN_FORMAT */
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#ifndef ASM_FORMAT_PRIVATE_NAME
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# define ASM_FORMAT_PRIVATE_NAME(OUTPUT, NAME, LABELNO) \
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do { const char *const name_ = (NAME); \
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char *const output_ = (OUTPUT) = \
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(char *) alloca (strlen (name_) + 32); \
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sprintf (output_, ASM_PN_FORMAT, name_, (unsigned long)(LABELNO)); \
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} while (0)
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#endif
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59
/* Choose a reasonable default for ASM_OUTPUT_ASCII. */
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61
#ifndef ASM_OUTPUT_ASCII
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#define ASM_OUTPUT_ASCII(MYFILE, MYSTRING, MYLENGTH) \
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do { \
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FILE *_hide_asm_out_file = (MYFILE); \
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const unsigned char *_hide_p = (const unsigned char *) (MYSTRING); \
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int _hide_thissize = (MYLENGTH); \
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{ \
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FILE *asm_out_file = _hide_asm_out_file; \
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const unsigned char *p = _hide_p; \
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int thissize = _hide_thissize; \
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int i; \
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fprintf (asm_out_file, "\t.ascii \""); \
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\
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for (i = 0; i < thissize; i++) \
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{ \
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int c = p[i]; \
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if (c == '\"' || c == '\\') \
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putc ('\\', asm_out_file); \
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if (ISPRINT (c)) \
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putc (c, asm_out_file); \
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else \
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{ \
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fprintf (asm_out_file, "\\%o", c); \
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/* After an octal-escape, if a digit follows, \
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terminate one string constant and start another. \
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The VAX assembler fails to stop reading the escape \
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after three digits, so this is the only way we \
88
can get it to parse the data properly. */
\
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if (i < thissize - 1 && ISDIGIT (p[i + 1])) \
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fprintf (asm_out_file, "\"\n\t.ascii \""); \
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} \
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} \
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fprintf (asm_out_file, "\"\n"); \
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} \
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} \
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while (0)
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#endif
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/* This is how we tell the assembler to equate two values. */
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#ifdef SET_ASM_OP
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#ifndef ASM_OUTPUT_DEF
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#define ASM_OUTPUT_DEF(FILE,LABEL1,LABEL2) \
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do { fprintf ((FILE), "%s", SET_ASM_OP); \
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assemble_name (FILE, LABEL1); \
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fprintf (FILE, ","); \
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assemble_name (FILE, LABEL2); \
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fprintf (FILE, "\n"); \
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} while (0)
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#endif
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#endif
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#ifndef IFUNC_ASM_TYPE
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#define IFUNC_ASM_TYPE "gnu_indirect_function"
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#endif
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#ifndef TLS_COMMON_ASM_OP
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#define TLS_COMMON_ASM_OP ".tls_common"
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#endif
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#if defined (HAVE_AS_TLS) && !defined (ASM_OUTPUT_TLS_COMMON)
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#define ASM_OUTPUT_TLS_COMMON(FILE, DECL, NAME, SIZE) \
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do \
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{ \
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fprintf ((FILE), "\t%s\t", TLS_COMMON_ASM_OP); \
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assemble_name ((FILE), (NAME)); \
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fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED",%u\n", \
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(SIZE), DECL_ALIGN (DECL) / BITS_PER_UNIT); \
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} \
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while (0)
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#endif
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/* Decide whether to defer emitting the assembler output for an equate
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of two values. The default is to not defer output. */
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#ifndef TARGET_DEFERRED_OUTPUT_DEFS
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#define TARGET_DEFERRED_OUTPUT_DEFS(DECL,TARGET) false
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#endif
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/* This is how to output the definition of a user-level label named
139
NAME, such as the label on variable NAME. */
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#ifndef ASM_OUTPUT_LABEL
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#define ASM_OUTPUT_LABEL(FILE,NAME) \
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do { \
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assemble_name ((FILE), (NAME)); \
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fputs (":\n", (FILE)); \
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} while (0)
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#endif
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149
/* This is how to output the definition of a user-level label named
150
NAME, such as the label on a function. */
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#ifndef ASM_OUTPUT_FUNCTION_LABEL
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#define ASM_OUTPUT_FUNCTION_LABEL(FILE, NAME, DECL) \
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ASM_OUTPUT_LABEL ((FILE), (NAME))
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#endif
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/* Output the definition of a compiler-generated label named NAME. */
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#ifndef ASM_OUTPUT_INTERNAL_LABEL
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#define ASM_OUTPUT_INTERNAL_LABEL(FILE,NAME) \
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do { \
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assemble_name_raw ((FILE), (NAME)); \
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fputs (":\n", (FILE)); \
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} while (0)
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#endif
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/* This is how to output a reference to a user-level label named NAME. */
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#ifndef ASM_OUTPUT_LABELREF
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#define ASM_OUTPUT_LABELREF(FILE,NAME) \
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do { \
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fputs (user_label_prefix, (FILE)); \
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fputs ((NAME), (FILE)); \
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} while (0);
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#endif
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/* Allow target to print debug info labels specially. This is useful for
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VLIW targets, since debug info labels should go into the middle of
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instruction bundles instead of breaking them. */
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#ifndef ASM_OUTPUT_DEBUG_LABEL
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#define ASM_OUTPUT_DEBUG_LABEL(FILE, PREFIX, NUM) \
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(*targetm.asm_out.internal_label) (FILE, PREFIX, NUM)
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#endif
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/* This is how we tell the assembler that a symbol is weak. */
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#ifndef ASM_OUTPUT_WEAK_ALIAS
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#if defined (ASM_WEAKEN_LABEL) && defined (ASM_OUTPUT_DEF)
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#define ASM_OUTPUT_WEAK_ALIAS(STREAM, NAME, VALUE) \
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do \
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{ \
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ASM_WEAKEN_LABEL (STREAM, NAME); \
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if (VALUE) \
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ASM_OUTPUT_DEF (STREAM, NAME, VALUE); \
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} \
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while (0)
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#endif
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#endif
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/* This is how we tell the assembler that a symbol is a weak alias to
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another symbol that doesn't require the other symbol to be defined.
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Uses of the former will turn into weak uses of the latter, i.e.,
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uses that, in case the latter is undefined, will not cause errors,
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and will add it to the symbol table as weak undefined. However, if
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the latter is referenced directly, a strong reference prevails. */
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#ifndef ASM_OUTPUT_WEAKREF
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#if defined HAVE_GAS_WEAKREF
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#define ASM_OUTPUT_WEAKREF(FILE, DECL, NAME, VALUE) \
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do \
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{ \
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fprintf ((FILE), "\t.weakref\t"); \
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assemble_name ((FILE), (NAME)); \
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fprintf ((FILE), ","); \
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assemble_name ((FILE), (VALUE)); \
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fprintf ((FILE), "\n"); \
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} \
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while (0)
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#endif
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#endif
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/* How to emit a .type directive. */
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#ifndef ASM_OUTPUT_TYPE_DIRECTIVE
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#if defined TYPE_ASM_OP && defined TYPE_OPERAND_FMT
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#define ASM_OUTPUT_TYPE_DIRECTIVE(STREAM, NAME, TYPE) \
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do \
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{ \
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fputs (TYPE_ASM_OP, STREAM); \
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assemble_name (STREAM, NAME); \
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fputs (", ", STREAM); \
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fprintf (STREAM, TYPE_OPERAND_FMT, TYPE); \
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putc ('\n', STREAM); \
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} \
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while (0)
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#endif
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#endif
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/* How to emit a .size directive. */
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#ifndef ASM_OUTPUT_SIZE_DIRECTIVE
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#ifdef SIZE_ASM_OP
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#define ASM_OUTPUT_SIZE_DIRECTIVE(STREAM, NAME, SIZE) \
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do \
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{ \
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HOST_WIDE_INT size_ = (SIZE); \
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fputs (SIZE_ASM_OP, STREAM); \
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assemble_name (STREAM, NAME); \
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fprintf (STREAM, ", " HOST_WIDE_INT_PRINT_DEC "\n", size_); \
246
} \
247
while (0)
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249
#define ASM_OUTPUT_MEASURED_SIZE(STREAM, NAME) \
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do \
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{ \
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fputs (SIZE_ASM_OP, STREAM); \
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assemble_name (STREAM, NAME); \
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fputs (", .-", STREAM); \
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assemble_name (STREAM, NAME); \
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putc ('\n', STREAM); \
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} \
258
while (0)
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#endif
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#endif
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/* This determines whether or not we support weak symbols. SUPPORTS_WEAK
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must be a preprocessor constant. */
265
#ifndef SUPPORTS_WEAK
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#if defined (ASM_WEAKEN_LABEL) || defined (ASM_WEAKEN_DECL)
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#define SUPPORTS_WEAK 1
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#else
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#define SUPPORTS_WEAK 0
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#endif
271
#endif
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/* This determines whether or not we support weak symbols during target
274
code generation. TARGET_SUPPORTS_WEAK can be any valid C expression. */
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#ifndef TARGET_SUPPORTS_WEAK
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#define TARGET_SUPPORTS_WEAK (SUPPORTS_WEAK)
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#endif
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/* This determines whether or not we support the discriminator
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attribute in the .loc directive. */
281
#ifndef SUPPORTS_DISCRIMINATOR
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#ifdef HAVE_GAS_DISCRIMINATOR
283
#define SUPPORTS_DISCRIMINATOR 1
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#else
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#define SUPPORTS_DISCRIMINATOR 0
286
#endif
287
#endif
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/* This determines whether or not we support link-once semantics. */
290
#ifndef SUPPORTS_ONE_ONLY
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#ifdef MAKE_DECL_ONE_ONLY
292
#define SUPPORTS_ONE_ONLY 1
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#else
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#define SUPPORTS_ONE_ONLY 0
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#endif
296
#endif
297
298
/* This determines whether weak symbols must be left out of a static
299
archive's table of contents. Defining this macro to be nonzero has
300
the consequence that certain symbols will not be made weak that
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otherwise would be. The C++ ABI requires this macro to be zero;
302
see the documentation. */
303
#ifndef TARGET_WEAK_NOT_IN_ARCHIVE_TOC
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#define TARGET_WEAK_NOT_IN_ARCHIVE_TOC 0
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#endif
306
307
/* This determines whether or not we need linkonce unwind information. */
308
#ifndef TARGET_USES_WEAK_UNWIND_INFO
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#define TARGET_USES_WEAK_UNWIND_INFO 0
310
#endif
311
312
/* By default, there is no prefix on user-defined symbols. */
313
#ifndef USER_LABEL_PREFIX
314
#define USER_LABEL_PREFIX ""
315
#endif
316
317
/* If the target supports weak symbols, define TARGET_ATTRIBUTE_WEAK to
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provide a weak attribute. Else define it to nothing.
319
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This would normally belong in ansidecl.h, but SUPPORTS_WEAK is
321
not available at that time.
322
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Note, this is only for use by target files which we know are to be
324
compiled by GCC. */
325
#ifndef TARGET_ATTRIBUTE_WEAK
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# if SUPPORTS_WEAK
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# define TARGET_ATTRIBUTE_WEAK __attribute__ ((weak))
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# else
329
# define TARGET_ATTRIBUTE_WEAK
330
# endif
331
#endif
332
333
/* By default we can assume that all global symbols are in one namespace,
334
across all shared libraries. */
335
#ifndef MULTIPLE_SYMBOL_SPACES
336
# define MULTIPLE_SYMBOL_SPACES 0
337
#endif
338
339
/* If the target supports init_priority C++ attribute, give
340
SUPPORTS_INIT_PRIORITY a nonzero value. */
341
#ifndef SUPPORTS_INIT_PRIORITY
342
#define SUPPORTS_INIT_PRIORITY 1
343
#endif
/* SUPPORTS_INIT_PRIORITY */
344
345
/* If we have a definition of INCOMING_RETURN_ADDR_RTX, assume that
346
the rest of the DWARF 2 frame unwind support is also provided. */
347
#if !defined (DWARF2_UNWIND_INFO) && defined (INCOMING_RETURN_ADDR_RTX)
348
#define DWARF2_UNWIND_INFO 1
349
#endif
350
351
/* If we have named sections, and we're using crtstuff to run ctors,
352
use them for registering eh frame information. */
353
#if defined (TARGET_ASM_NAMED_SECTION) && DWARF2_UNWIND_INFO \
354
&& !defined (EH_FRAME_IN_DATA_SECTION)
355
#ifndef EH_FRAME_SECTION_NAME
356
#define EH_FRAME_SECTION_NAME ".eh_frame"
357
#endif
358
#endif
359
360
/* On many systems, different EH table encodings are used under
361
difference circumstances. Some will require runtime relocations;
362
some will not. For those that do not require runtime relocations,
363
we would like to make the table read-only. However, since the
364
read-only tables may need to be combined with read-write tables
365
that do require runtime relocation, it is not safe to make the
366
tables read-only unless the linker will merge read-only and
367
read-write sections into a single read-write section. If your
368
linker does not have this ability, but your system is such that no
369
encoding used with non-PIC code will ever require a runtime
370
relocation, then you can define EH_TABLES_CAN_BE_READ_ONLY to 1 in
371
your target configuration file. */
372
#ifndef EH_TABLES_CAN_BE_READ_ONLY
373
#ifdef HAVE_LD_RO_RW_SECTION_MIXING
374
#define EH_TABLES_CAN_BE_READ_ONLY 1
375
#else
376
#define EH_TABLES_CAN_BE_READ_ONLY 0
377
#endif
378
#endif
379
380
/* If we have named section and we support weak symbols, then use the
381
.jcr section for recording java classes which need to be registered
382
at program start-up time. */
383
#if defined (TARGET_ASM_NAMED_SECTION) && SUPPORTS_WEAK
384
#ifndef JCR_SECTION_NAME
385
#define JCR_SECTION_NAME ".jcr"
386
#endif
387
#endif
388
389
/* This decision to use a .jcr section can be overridden by defining
390
USE_JCR_SECTION to 0 in target file. This is necessary if target
391
can define JCR_SECTION_NAME but does not have crtstuff or
392
linker support for .jcr section. */
393
#ifndef TARGET_USE_JCR_SECTION
394
#ifdef JCR_SECTION_NAME
395
#define TARGET_USE_JCR_SECTION 1
396
#else
397
#define TARGET_USE_JCR_SECTION 0
398
#endif
399
#endif
400
401
/* Number of hardware registers that go into the DWARF-2 unwind info.
402
If not defined, equals FIRST_PSEUDO_REGISTER */
403
404
#ifndef DWARF_FRAME_REGISTERS
405
#define DWARF_FRAME_REGISTERS FIRST_PSEUDO_REGISTER
406
#endif
407
408
/* Offsets recorded in opcodes are a multiple of this alignment factor. */
409
#ifndef DWARF_CIE_DATA_ALIGNMENT
410
#ifdef STACK_GROWS_DOWNWARD
411
#define DWARF_CIE_DATA_ALIGNMENT (-((int) UNITS_PER_WORD))
412
#else
413
#define DWARF_CIE_DATA_ALIGNMENT ((int) UNITS_PER_WORD)
414
#endif
415
#endif
416
417
/* The DWARF 2 CFA column which tracks the return address. Normally this
418
is the column for PC, or the first column after all of the hard
419
registers. */
420
#ifndef DWARF_FRAME_RETURN_COLUMN
421
#ifdef PC_REGNUM
422
#define DWARF_FRAME_RETURN_COLUMN DWARF_FRAME_REGNUM (PC_REGNUM)
423
#else
424
#define DWARF_FRAME_RETURN_COLUMN DWARF_FRAME_REGISTERS
425
#endif
426
#endif
427
428
/* How to renumber registers for dbx and gdb. If not defined, assume
429
no renumbering is necessary. */
430
431
#ifndef DBX_REGISTER_NUMBER
432
#define DBX_REGISTER_NUMBER(REGNO) (REGNO)
433
#endif
434
435
/* The mapping from gcc register number to DWARF 2 CFA column number.
436
By default, we just provide columns for all registers. */
437
#ifndef DWARF_FRAME_REGNUM
438
#define DWARF_FRAME_REGNUM(REG) DBX_REGISTER_NUMBER (REG)
439
#endif
440
441
/* Map register numbers held in the call frame info that gcc has
442
collected using DWARF_FRAME_REGNUM to those that should be output in
443
.debug_frame and .eh_frame. */
444
#ifndef DWARF2_FRAME_REG_OUT
445
#define DWARF2_FRAME_REG_OUT(REGNO, FOR_EH) (REGNO)
446
#endif
447
448
/* The size of addresses as they appear in the Dwarf 2 data.
449
Some architectures use word addresses to refer to code locations,
450
but Dwarf 2 info always uses byte addresses. On such machines,
451
Dwarf 2 addresses need to be larger than the architecture's
452
pointers. */
453
#ifndef DWARF2_ADDR_SIZE
454
#define DWARF2_ADDR_SIZE (POINTER_SIZE / BITS_PER_UNIT)
455
#endif
456
457
/* The size in bytes of a DWARF field indicating an offset or length
458
relative to a debug info section, specified to be 4 bytes in the
459
DWARF-2 specification. The SGI/MIPS ABI defines it to be the same
460
as PTR_SIZE. */
461
#ifndef DWARF_OFFSET_SIZE
462
#define DWARF_OFFSET_SIZE 4
463
#endif
464
465
/* The size in bytes of a DWARF 4 type signature. */
466
#ifndef DWARF_TYPE_SIGNATURE_SIZE
467
#define DWARF_TYPE_SIGNATURE_SIZE 8
468
#endif
469
470
/* Default sizes for base C types. If the sizes are different for
471
your target, you should override these values by defining the
472
appropriate symbols in your tm.h file. */
473
474
#ifndef BITS_PER_UNIT
475
#define BITS_PER_UNIT 8
476
#endif
477
478
#ifndef BITS_PER_WORD
479
#define BITS_PER_WORD (BITS_PER_UNIT * UNITS_PER_WORD)
480
#endif
481
482
#ifndef CHAR_TYPE_SIZE
483
#define CHAR_TYPE_SIZE BITS_PER_UNIT
484
#endif
485
486
#ifndef BOOL_TYPE_SIZE
487
/* `bool' has size and alignment `1', on almost all platforms. */
488
#define BOOL_TYPE_SIZE CHAR_TYPE_SIZE
489
#endif
490
491
#ifndef SHORT_TYPE_SIZE
492
#define SHORT_TYPE_SIZE (BITS_PER_UNIT * MIN ((UNITS_PER_WORD + 1) / 2, 2))
493
#endif
494
495
#ifndef INT_TYPE_SIZE
496
#define INT_TYPE_SIZE BITS_PER_WORD
497
#endif
498
499
#ifndef LONG_TYPE_SIZE
500
#define LONG_TYPE_SIZE BITS_PER_WORD
501
#endif
502
503
#ifndef LONG_LONG_TYPE_SIZE
504
#define LONG_LONG_TYPE_SIZE (BITS_PER_WORD * 2)
505
#endif
506
507
#ifndef WCHAR_TYPE_SIZE
508
#define WCHAR_TYPE_SIZE INT_TYPE_SIZE
509
#endif
510
511
#ifndef FLOAT_TYPE_SIZE
512
#define FLOAT_TYPE_SIZE BITS_PER_WORD
513
#endif
514
515
#ifndef DOUBLE_TYPE_SIZE
516
#define DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2)
517
#endif
518
519
#ifndef LONG_DOUBLE_TYPE_SIZE
520
#define LONG_DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2)
521
#endif
522
523
#ifndef DECIMAL32_TYPE_SIZE
524
#define DECIMAL32_TYPE_SIZE 32
525
#endif
526
527
#ifndef DECIMAL64_TYPE_SIZE
528
#define DECIMAL64_TYPE_SIZE 64
529
#endif
530
531
#ifndef DECIMAL128_TYPE_SIZE
532
#define DECIMAL128_TYPE_SIZE 128
533
#endif
534
535
#ifndef SHORT_FRACT_TYPE_SIZE
536
#define SHORT_FRACT_TYPE_SIZE BITS_PER_UNIT
537
#endif
538
539
#ifndef FRACT_TYPE_SIZE
540
#define FRACT_TYPE_SIZE (BITS_PER_UNIT * 2)
541
#endif
542
543
#ifndef LONG_FRACT_TYPE_SIZE
544
#define LONG_FRACT_TYPE_SIZE (BITS_PER_UNIT * 4)
545
#endif
546
547
#ifndef LONG_LONG_FRACT_TYPE_SIZE
548
#define LONG_LONG_FRACT_TYPE_SIZE (BITS_PER_UNIT * 8)
549
#endif
550
551
#ifndef SHORT_ACCUM_TYPE_SIZE
552
#define SHORT_ACCUM_TYPE_SIZE (SHORT_FRACT_TYPE_SIZE * 2)
553
#endif
554
555
#ifndef ACCUM_TYPE_SIZE
556
#define ACCUM_TYPE_SIZE (FRACT_TYPE_SIZE * 2)
557
#endif
558
559
#ifndef LONG_ACCUM_TYPE_SIZE
560
#define LONG_ACCUM_TYPE_SIZE (LONG_FRACT_TYPE_SIZE * 2)
561
#endif
562
563
#ifndef LONG_LONG_ACCUM_TYPE_SIZE
564
#define LONG_LONG_ACCUM_TYPE_SIZE (LONG_LONG_FRACT_TYPE_SIZE * 2)
565
#endif
566
567
/* We let tm.h override the types used here, to handle trivial differences
568
such as the choice of unsigned int or long unsigned int for size_t.
569
When machines start needing nontrivial differences in the size type,
570
it would be best to do something here to figure out automatically
571
from other information what type to use. */
572
573
#ifndef SIZE_TYPE
574
#define SIZE_TYPE "long unsigned int"
575
#endif
576
577
#ifndef SIZETYPE
578
#define SIZETYPE SIZE_TYPE
579
#endif
580
581
#ifndef PID_TYPE
582
#define PID_TYPE "int"
583
#endif
584
585
/* If GCC knows the exact uint_least16_t and uint_least32_t types from
586
<stdint.h>, use them for char16_t and char32_t. Otherwise, use
587
these guesses; getting the wrong type of a given width will not
588
affect C++ name mangling because in C++ these are distinct types
589
not typedefs. */
590
591
#ifdef UINT_LEAST16_TYPE
592
#define CHAR16_TYPE UINT_LEAST16_TYPE
593
#else
594
#define CHAR16_TYPE "short unsigned int"
595
#endif
596
597
#ifdef UINT_LEAST32_TYPE
598
#define CHAR32_TYPE UINT_LEAST32_TYPE
599
#else
600
#define CHAR32_TYPE "unsigned int"
601
#endif
602
603
#ifndef WCHAR_TYPE
604
#define WCHAR_TYPE "int"
605
#endif
606
607
/* WCHAR_TYPE gets overridden by -fshort-wchar. */
608
#define MODIFIED_WCHAR_TYPE \
609
(flag_short_wchar ? "short unsigned int" : WCHAR_TYPE)
610
611
#ifndef PTRDIFF_TYPE
612
#define PTRDIFF_TYPE "long int"
613
#endif
614
615
#ifndef WINT_TYPE
616
#define WINT_TYPE "unsigned int"
617
#endif
618
619
#ifndef INTMAX_TYPE
620
#define INTMAX_TYPE ((INT_TYPE_SIZE == LONG_LONG_TYPE_SIZE) \
621
? "int" \
622
: ((LONG_TYPE_SIZE == LONG_LONG_TYPE_SIZE) \
623
? "long int" \
624
: "long long int"))
625
#endif
626
627
#ifndef UINTMAX_TYPE
628
#define UINTMAX_TYPE ((INT_TYPE_SIZE == LONG_LONG_TYPE_SIZE) \
629
? "unsigned int" \
630
: ((LONG_TYPE_SIZE == LONG_LONG_TYPE_SIZE) \
631
? "long unsigned int" \
632
: "long long unsigned int"))
633
#endif
634
635
636
/* There are no default definitions of these <stdint.h> types. */
637
638
#ifndef SIG_ATOMIC_TYPE
639
#define SIG_ATOMIC_TYPE ((const char *) NULL)
640
#endif
641
642
#ifndef INT8_TYPE
643
#define INT8_TYPE ((const char *) NULL)
644
#endif
645
646
#ifndef INT16_TYPE
647
#define INT16_TYPE ((const char *) NULL)
648
#endif
649
650
#ifndef INT32_TYPE
651
#define INT32_TYPE ((const char *) NULL)
652
#endif
653
654
#ifndef INT64_TYPE
655
#define INT64_TYPE ((const char *) NULL)
656
#endif
657
658
#ifndef UINT8_TYPE
659
#define UINT8_TYPE ((const char *) NULL)
660
#endif
661
662
#ifndef UINT16_TYPE
663
#define UINT16_TYPE ((const char *) NULL)
664
#endif
665
666
#ifndef UINT32_TYPE
667
#define UINT32_TYPE ((const char *) NULL)
668
#endif
669
670
#ifndef UINT64_TYPE
671
#define UINT64_TYPE ((const char *) NULL)
672
#endif
673
674
#ifndef INT_LEAST8_TYPE
675
#define INT_LEAST8_TYPE ((const char *) NULL)
676
#endif
677
678
#ifndef INT_LEAST16_TYPE
679
#define INT_LEAST16_TYPE ((const char *) NULL)
680
#endif
681
682
#ifndef INT_LEAST32_TYPE
683
#define INT_LEAST32_TYPE ((const char *) NULL)
684
#endif
685
686
#ifndef INT_LEAST64_TYPE
687
#define INT_LEAST64_TYPE ((const char *) NULL)
688
#endif
689
690
#ifndef UINT_LEAST8_TYPE
691
#define UINT_LEAST8_TYPE ((const char *) NULL)
692
#endif
693
694
#ifndef UINT_LEAST16_TYPE
695
#define UINT_LEAST16_TYPE ((const char *) NULL)
696
#endif
697
698
#ifndef UINT_LEAST32_TYPE
699
#define UINT_LEAST32_TYPE ((const char *) NULL)
700
#endif
701
702
#ifndef UINT_LEAST64_TYPE
703
#define UINT_LEAST64_TYPE ((const char *) NULL)
704
#endif
705
706
#ifndef INT_FAST8_TYPE
707
#define INT_FAST8_TYPE ((const char *) NULL)
708
#endif
709
710
#ifndef INT_FAST16_TYPE
711
#define INT_FAST16_TYPE ((const char *) NULL)
712
#endif
713
714
#ifndef INT_FAST32_TYPE
715
#define INT_FAST32_TYPE ((const char *) NULL)
716
#endif
717
718
#ifndef INT_FAST64_TYPE
719
#define INT_FAST64_TYPE ((const char *) NULL)
720
#endif
721
722
#ifndef UINT_FAST8_TYPE
723
#define UINT_FAST8_TYPE ((const char *) NULL)
724
#endif
725
726
#ifndef UINT_FAST16_TYPE
727
#define UINT_FAST16_TYPE ((const char *) NULL)
728
#endif
729
730
#ifndef UINT_FAST32_TYPE
731
#define UINT_FAST32_TYPE ((const char *) NULL)
732
#endif
733
734
#ifndef UINT_FAST64_TYPE
735
#define UINT_FAST64_TYPE ((const char *) NULL)
736
#endif
737
738
#ifndef INTPTR_TYPE
739
#define INTPTR_TYPE ((const char *) NULL)
740
#endif
741
742
#ifndef UINTPTR_TYPE
743
#define UINTPTR_TYPE ((const char *) NULL)
744
#endif
745
746
/* Width in bits of a pointer. Mind the value of the macro `Pmode'. */
747
#ifndef POINTER_SIZE
748
#define POINTER_SIZE BITS_PER_WORD
749
#endif
750
751
#ifndef PIC_OFFSET_TABLE_REGNUM
752
#define PIC_OFFSET_TABLE_REGNUM INVALID_REGNUM
753
#endif
754
755
#ifndef PIC_OFFSET_TABLE_REG_CALL_CLOBBERED
756
#define PIC_OFFSET_TABLE_REG_CALL_CLOBBERED 0
757
#endif
758
759
#ifndef TARGET_DLLIMPORT_DECL_ATTRIBUTES
760
#define TARGET_DLLIMPORT_DECL_ATTRIBUTES 0
761
#endif
762
763
#ifndef TARGET_DECLSPEC
764
#if TARGET_DLLIMPORT_DECL_ATTRIBUTES
765
/* If the target supports the "dllimport" attribute, users are
766
probably used to the "__declspec" syntax. */
767
#define TARGET_DECLSPEC 1
768
#else
769
#define TARGET_DECLSPEC 0
770
#endif
771
#endif
772
773
/* By default, the preprocessor should be invoked the same way in C++
774
as in C. */
775
#ifndef CPLUSPLUS_CPP_SPEC
776
#ifdef CPP_SPEC
777
#define CPLUSPLUS_CPP_SPEC CPP_SPEC
778
#endif
779
#endif
780
781
#ifndef ACCUMULATE_OUTGOING_ARGS
782
#define ACCUMULATE_OUTGOING_ARGS 0
783
#endif
784
785
/* By default, use the GNU runtime for Objective C. */
786
#ifndef NEXT_OBJC_RUNTIME
787
#define NEXT_OBJC_RUNTIME 0
788
#endif
789
790
/* Supply a default definition for PUSH_ARGS. */
791
#ifndef PUSH_ARGS
792
#ifdef PUSH_ROUNDING
793
#define PUSH_ARGS !ACCUMULATE_OUTGOING_ARGS
794
#else
795
#define PUSH_ARGS 0
796
#endif
797
#endif
798
799
/* Decide whether a function's arguments should be processed
800
from first to last or from last to first.
801
802
They should if the stack and args grow in opposite directions, but
803
only if we have push insns. */
804
805
#ifdef PUSH_ROUNDING
806
807
#ifndef PUSH_ARGS_REVERSED
808
#if defined (STACK_GROWS_DOWNWARD) != defined (ARGS_GROW_DOWNWARD)
809
#define PUSH_ARGS_REVERSED PUSH_ARGS
810
#endif
811
#endif
812
813
#endif
814
815
#ifndef PUSH_ARGS_REVERSED
816
#define PUSH_ARGS_REVERSED 0
817
#endif
818
819
/* Default value for the alignment (in bits) a C conformant malloc has to
820
provide. This default is intended to be safe and always correct. */
821
#ifndef MALLOC_ABI_ALIGNMENT
822
#define MALLOC_ABI_ALIGNMENT BITS_PER_WORD
823
#endif
824
825
/* If PREFERRED_STACK_BOUNDARY is not defined, set it to STACK_BOUNDARY.
826
STACK_BOUNDARY is required. */
827
#ifndef PREFERRED_STACK_BOUNDARY
828
#define PREFERRED_STACK_BOUNDARY STACK_BOUNDARY
829
#endif
830
831
/* Set INCOMING_STACK_BOUNDARY to PREFERRED_STACK_BOUNDARY if it is not
832
defined. */
833
#ifndef INCOMING_STACK_BOUNDARY
834
#define INCOMING_STACK_BOUNDARY PREFERRED_STACK_BOUNDARY
835
#endif
836
837
#ifndef TARGET_DEFAULT_PACK_STRUCT
838
#define TARGET_DEFAULT_PACK_STRUCT 0
839
#endif
840
841
/* By default, the vtable entries are void pointers, the so the alignment
842
is the same as pointer alignment. The value of this macro specifies
843
the alignment of the vtable entry in bits. It should be defined only
844
when special alignment is necessary. */
845
#ifndef TARGET_VTABLE_ENTRY_ALIGN
846
#define TARGET_VTABLE_ENTRY_ALIGN POINTER_SIZE
847
#endif
848
849
/* There are a few non-descriptor entries in the vtable at offsets below
850
zero. If these entries must be padded (say, to preserve the alignment
851
specified by TARGET_VTABLE_ENTRY_ALIGN), set this to the number of
852
words in each data entry. */
853
#ifndef TARGET_VTABLE_DATA_ENTRY_DISTANCE
854
#define TARGET_VTABLE_DATA_ENTRY_DISTANCE 1
855
#endif
856
857
/* Decide whether it is safe to use a local alias for a virtual function
858
when constructing thunks. */
859
#ifndef TARGET_USE_LOCAL_THUNK_ALIAS_P
860
#ifdef ASM_OUTPUT_DEF
861
#define TARGET_USE_LOCAL_THUNK_ALIAS_P(DECL) 1
862
#else
863
#define TARGET_USE_LOCAL_THUNK_ALIAS_P(DECL) 0
864
#endif
865
#endif
866
867
/* Select a format to encode pointers in exception handling data. We
868
prefer those that result in fewer dynamic relocations. Assume no
869
special support here and encode direct references. */
870
#ifndef ASM_PREFERRED_EH_DATA_FORMAT
871
#define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) DW_EH_PE_absptr
872
#endif
873
874
/* By default, the C++ compiler will use the lowest bit of the pointer
875
to function to indicate a pointer-to-member-function points to a
876
virtual member function. However, if FUNCTION_BOUNDARY indicates
877
function addresses aren't always even, the lowest bit of the delta
878
field will be used. */
879
#ifndef TARGET_PTRMEMFUNC_VBIT_LOCATION
880
#define TARGET_PTRMEMFUNC_VBIT_LOCATION \
881
(FUNCTION_BOUNDARY >= 2 * BITS_PER_UNIT \
882
? ptrmemfunc_vbit_in_pfn : ptrmemfunc_vbit_in_delta)
883
#endif
884
885
#ifndef DEFAULT_GDB_EXTENSIONS
886
#define DEFAULT_GDB_EXTENSIONS 1
887
#endif
888
889
/* If more than one debugging type is supported, you must define
890
PREFERRED_DEBUGGING_TYPE to choose the default. */
891
892
#if 1 < (defined (DBX_DEBUGGING_INFO) + defined (SDB_DEBUGGING_INFO) \
893
+ defined (DWARF2_DEBUGGING_INFO) + defined (XCOFF_DEBUGGING_INFO) \
894
+ defined (VMS_DEBUGGING_INFO))
895
#ifndef PREFERRED_DEBUGGING_TYPE
896
#error You must define PREFERRED_DEBUGGING_TYPE
897
#endif
/* no PREFERRED_DEBUGGING_TYPE */
898
899
/* If only one debugging format is supported, define PREFERRED_DEBUGGING_TYPE
900
here so other code needn't care. */
901
#elif defined DBX_DEBUGGING_INFO
902
#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
903
904
#elif defined SDB_DEBUGGING_INFO
905
#define PREFERRED_DEBUGGING_TYPE SDB_DEBUG
906
907
#elif defined DWARF2_DEBUGGING_INFO
908
#define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
909
910
#elif defined VMS_DEBUGGING_INFO
911
#define PREFERRED_DEBUGGING_TYPE VMS_AND_DWARF2_DEBUG
912
913
#elif defined XCOFF_DEBUGGING_INFO
914
#define PREFERRED_DEBUGGING_TYPE XCOFF_DEBUG
915
916
#else
917
/* No debugging format is supported by this target. */
918
#define PREFERRED_DEBUGGING_TYPE NO_DEBUG
919
#endif
920
921
#ifndef LARGEST_EXPONENT_IS_NORMAL
922
#define LARGEST_EXPONENT_IS_NORMAL(SIZE) 0
923
#endif
924
925
#ifndef ROUND_TOWARDS_ZERO
926
#define ROUND_TOWARDS_ZERO 0
927
#endif
928
929
#ifndef FLOAT_LIB_COMPARE_RETURNS_BOOL
930
#define FLOAT_LIB_COMPARE_RETURNS_BOOL(MODE, COMPARISON) false
931
#endif
932
933
/* True if the targets integer-comparison functions return { 0, 1, 2
934
} to indicate { <, ==, > }. False if { -1, 0, 1 } is used
935
instead. The libgcc routines are biased. */
936
#ifndef TARGET_LIB_INT_CMP_BIASED
937
#define TARGET_LIB_INT_CMP_BIASED (true)
938
#endif
939
940
/* If FLOAT_WORDS_BIG_ENDIAN is not defined in the header files,
941
then the word-endianness is the same as for integers. */
942
#ifndef FLOAT_WORDS_BIG_ENDIAN
943
#define FLOAT_WORDS_BIG_ENDIAN WORDS_BIG_ENDIAN
944
#endif
945
946
#ifndef REG_WORDS_BIG_ENDIAN
947
#define REG_WORDS_BIG_ENDIAN WORDS_BIG_ENDIAN
948
#endif
949
950
#ifdef TARGET_FLT_EVAL_METHOD
951
#define TARGET_FLT_EVAL_METHOD_NON_DEFAULT 1
952
#else
953
#define TARGET_FLT_EVAL_METHOD 0
954
#define TARGET_FLT_EVAL_METHOD_NON_DEFAULT 0
955
#endif
956
957
#ifndef TARGET_DEC_EVAL_METHOD
958
#define TARGET_DEC_EVAL_METHOD 2
959
#endif
960
961
#ifndef HAS_LONG_COND_BRANCH
962
#define HAS_LONG_COND_BRANCH 0
963
#endif
964
965
#ifndef HAS_LONG_UNCOND_BRANCH
966
#define HAS_LONG_UNCOND_BRANCH 0
967
#endif
968
969
/* Determine whether __cxa_atexit, rather than atexit, is used to
970
register C++ destructors for local statics and global objects. */
971
#ifndef DEFAULT_USE_CXA_ATEXIT
972
#define DEFAULT_USE_CXA_ATEXIT 0
973
#endif
974
975
/* If none of these macros are defined, the port must use the new
976
technique of defining constraints in the machine description.
977
tm_p.h will define those macros that machine-independent code
978
still uses. */
979
#if !defined CONSTRAINT_LEN \
980
&& !defined REG_CLASS_FROM_LETTER \
981
&& !defined REG_CLASS_FROM_CONSTRAINT \
982
&& !defined CONST_OK_FOR_LETTER_P \
983
&& !defined CONST_OK_FOR_CONSTRAINT_P \
984
&& !defined CONST_DOUBLE_OK_FOR_LETTER_P \
985
&& !defined CONST_DOUBLE_OK_FOR_CONSTRAINT_P \
986
&& !defined EXTRA_CONSTRAINT \
987
&& !defined EXTRA_CONSTRAINT_STR \
988
&& !defined EXTRA_MEMORY_CONSTRAINT \
989
&& !defined EXTRA_ADDRESS_CONSTRAINT
990
991
#define USE_MD_CONSTRAINTS
992
993
#if GCC_VERSION >= 3000 && defined IN_GCC
994
/* These old constraint macros shouldn't appear anywhere in a
995
configuration using MD constraint definitions. */
996
#pragma GCC poison REG_CLASS_FROM_LETTER CONST_OK_FOR_LETTER_P \
997
CONST_DOUBLE_OK_FOR_LETTER_P EXTRA_CONSTRAINT
998
#endif
999
1000
#else
/* old constraint mechanism in use */
1001
1002
/* Determine whether extra constraint letter should be handled
1003
via address reload (like 'o'). */
1004
#ifndef EXTRA_MEMORY_CONSTRAINT
1005
#define EXTRA_MEMORY_CONSTRAINT(C,STR) 0
1006
#endif
1007
1008
/* Determine whether extra constraint letter should be handled
1009
as an address (like 'p'). */
1010
#ifndef EXTRA_ADDRESS_CONSTRAINT
1011
#define EXTRA_ADDRESS_CONSTRAINT(C,STR) 0
1012
#endif
1013
1014
/* When a port defines CONSTRAINT_LEN, it should use DEFAULT_CONSTRAINT_LEN
1015
for all the characters that it does not want to change, so things like the
1016
'length' of a digit in a matching constraint is an implementation detail,
1017
and not part of the interface. */
1018
#define DEFAULT_CONSTRAINT_LEN(C,STR) 1
1019
1020
#ifndef CONSTRAINT_LEN
1021
#define CONSTRAINT_LEN(C,STR) DEFAULT_CONSTRAINT_LEN (C, STR)
1022
#endif
1023
1024
#if defined (CONST_OK_FOR_LETTER_P) && ! defined (CONST_OK_FOR_CONSTRAINT_P)
1025
#define CONST_OK_FOR_CONSTRAINT_P(VAL,C,STR) CONST_OK_FOR_LETTER_P (VAL, C)
1026
#endif
1027
1028
#if defined (CONST_DOUBLE_OK_FOR_LETTER_P) && ! defined (CONST_DOUBLE_OK_FOR_CONSTRAINT_P)
1029
#define CONST_DOUBLE_OK_FOR_CONSTRAINT_P(OP,C,STR) \
1030
CONST_DOUBLE_OK_FOR_LETTER_P (OP, C)
1031
#endif
1032
1033
#ifndef REG_CLASS_FROM_CONSTRAINT
1034
#define REG_CLASS_FROM_CONSTRAINT(C,STR) REG_CLASS_FROM_LETTER (C)
1035
#endif
1036
1037
#if defined (EXTRA_CONSTRAINT) && ! defined (EXTRA_CONSTRAINT_STR)
1038
#define EXTRA_CONSTRAINT_STR(OP, C,STR) EXTRA_CONSTRAINT (OP, C)
1039
#endif
1040
1041
#endif
/* old constraint mechanism in use */
1042
1043
/* Determin whether the target runtime library is Bionic */
1044
#ifndef TARGET_HAS_BIONIC
1045
#define TARGET_HAS_BIONIC 0
1046
#endif
1047
1048
/* Indicate that CLZ and CTZ are undefined at zero. */
1049
#ifndef CLZ_DEFINED_VALUE_AT_ZERO
1050
#define CLZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE) 0
1051
#endif
1052
#ifndef CTZ_DEFINED_VALUE_AT_ZERO
1053
#define CTZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE) 0
1054
#endif
1055
1056
/* Provide a default value for STORE_FLAG_VALUE. */
1057
#ifndef STORE_FLAG_VALUE
1058
#define STORE_FLAG_VALUE 1
1059
#endif
1060
1061
/* This macro is used to determine what the largest unit size that
1062
move_by_pieces can use is. */
1063
1064
/* MOVE_MAX_PIECES is the number of bytes at a time which we can
1065
move efficiently, as opposed to MOVE_MAX which is the maximum
1066
number of bytes we can move with a single instruction. */
1067
1068
#ifndef MOVE_MAX_PIECES
1069
#define MOVE_MAX_PIECES MOVE_MAX
1070
#endif
1071
1072
#ifndef MAX_MOVE_MAX
1073
#define MAX_MOVE_MAX MOVE_MAX
1074
#endif
1075
1076
#ifndef MIN_UNITS_PER_WORD
1077
#define MIN_UNITS_PER_WORD UNITS_PER_WORD
1078
#endif
1079
1080
#ifndef MAX_BITS_PER_WORD
1081
#define MAX_BITS_PER_WORD BITS_PER_WORD
1082
#endif
1083
1084
#ifndef STACK_POINTER_OFFSET
1085
#define STACK_POINTER_OFFSET 0
1086
#endif
1087
1088
#ifndef LOCAL_REGNO
1089
#define LOCAL_REGNO(REGNO) 0
1090
#endif
1091
1092
/* EXIT_IGNORE_STACK should be nonzero if, when returning from a function,
1093
the stack pointer does not matter. The value is tested only in
1094
functions that have frame pointers. */
1095
#ifndef EXIT_IGNORE_STACK
1096
#define EXIT_IGNORE_STACK 0
1097
#endif
1098
1099
/* Assume that case vectors are not pc-relative. */
1100
#ifndef CASE_VECTOR_PC_RELATIVE
1101
#define CASE_VECTOR_PC_RELATIVE 0
1102
#endif
1103
1104
/* Assume that trampolines need function alignment. */
1105
#ifndef TRAMPOLINE_ALIGNMENT
1106
#define TRAMPOLINE_ALIGNMENT FUNCTION_BOUNDARY
1107
#endif
1108
1109
/* Register mappings for target machines without register windows. */
1110
#ifndef INCOMING_REGNO
1111
#define INCOMING_REGNO(N) (N)
1112
#endif
1113
1114
#ifndef OUTGOING_REGNO
1115
#define OUTGOING_REGNO(N) (N)
1116
#endif
1117
1118
#ifndef SHIFT_COUNT_TRUNCATED
1119
#define SHIFT_COUNT_TRUNCATED 0
1120
#endif
1121
1122
#ifndef LEGITIMATE_PIC_OPERAND_P
1123
#define LEGITIMATE_PIC_OPERAND_P(X) 1
1124
#endif
1125
1126
#ifndef TARGET_MEM_CONSTRAINT
1127
#define TARGET_MEM_CONSTRAINT 'm'
1128
#endif
1129
1130
#ifndef REVERSIBLE_CC_MODE
1131
#define REVERSIBLE_CC_MODE(MODE) 0
1132
#endif
1133
1134
/* Biggest alignment supported by the object file format of this machine. */
1135
#ifndef MAX_OFILE_ALIGNMENT
1136
#define MAX_OFILE_ALIGNMENT BIGGEST_ALIGNMENT
1137
#endif
1138
1139
#ifndef FRAME_GROWS_DOWNWARD
1140
#define FRAME_GROWS_DOWNWARD 0
1141
#endif
1142
1143
/* On most machines, the CFA coincides with the first incoming parm. */
1144
#ifndef ARG_POINTER_CFA_OFFSET
1145
#define ARG_POINTER_CFA_OFFSET(FNDECL) \
1146
(FIRST_PARM_OFFSET (FNDECL) + crtl->args.pretend_args_size)
1147
#endif
1148
1149
/* On most machines, we use the CFA as DW_AT_frame_base. */
1150
#ifndef CFA_FRAME_BASE_OFFSET
1151
#define CFA_FRAME_BASE_OFFSET(FNDECL) 0
1152
#endif
1153
1154
/* The offset from the incoming value of %sp to the top of the stack frame
1155
for the current function. */
1156
#ifndef INCOMING_FRAME_SP_OFFSET
1157
#define INCOMING_FRAME_SP_OFFSET 0
1158
#endif
1159
1160
#ifndef HARD_REGNO_NREGS_HAS_PADDING
1161
#define HARD_REGNO_NREGS_HAS_PADDING(REGNO, MODE) 0
1162
#define HARD_REGNO_NREGS_WITH_PADDING(REGNO, MODE) -1
1163
#endif
1164
1165
#ifndef OUTGOING_REG_PARM_STACK_SPACE
1166
#define OUTGOING_REG_PARM_STACK_SPACE(FNTYPE) 0
1167
#endif
1168
1169
/* MAX_STACK_ALIGNMENT is the maximum stack alignment guaranteed by
1170
the backend. MAX_SUPPORTED_STACK_ALIGNMENT is the maximum best
1171
effort stack alignment supported by the backend. If the backend
1172
supports stack alignment, MAX_SUPPORTED_STACK_ALIGNMENT and
1173
MAX_STACK_ALIGNMENT are the same. Otherwise, the incoming stack
1174
boundary will limit the maximum guaranteed stack alignment. */
1175
#ifdef MAX_STACK_ALIGNMENT
1176
#define MAX_SUPPORTED_STACK_ALIGNMENT MAX_STACK_ALIGNMENT
1177
#else
1178
#define MAX_STACK_ALIGNMENT STACK_BOUNDARY
1179
#define MAX_SUPPORTED_STACK_ALIGNMENT PREFERRED_STACK_BOUNDARY
1180
#endif
1181
1182
#define SUPPORTS_STACK_ALIGNMENT (MAX_STACK_ALIGNMENT > STACK_BOUNDARY)
1183
1184
#ifndef LOCAL_ALIGNMENT
1185
#define LOCAL_ALIGNMENT(TYPE, ALIGNMENT) ALIGNMENT
1186
#endif
1187
1188
#ifndef STACK_SLOT_ALIGNMENT
1189
#define STACK_SLOT_ALIGNMENT(TYPE,MODE,ALIGN) \
1190
((TYPE) ? LOCAL_ALIGNMENT ((TYPE), (ALIGN)) : (ALIGN))
1191
#endif
1192
1193
#ifndef LOCAL_DECL_ALIGNMENT
1194
#define LOCAL_DECL_ALIGNMENT(DECL) \
1195
LOCAL_ALIGNMENT (TREE_TYPE (DECL), DECL_ALIGN (DECL))
1196
#endif
1197
1198
#ifndef MINIMUM_ALIGNMENT
1199
#define MINIMUM_ALIGNMENT(EXP,MODE,ALIGN) (ALIGN)
1200
#endif
1201
1202
/* Alignment value for attribute ((aligned)). */
1203
#ifndef ATTRIBUTE_ALIGNED_VALUE
1204
#define ATTRIBUTE_ALIGNED_VALUE BIGGEST_ALIGNMENT
1205
#endif
1206
1207
#ifndef SLOW_UNALIGNED_ACCESS
1208
#define SLOW_UNALIGNED_ACCESS(MODE, ALIGN) STRICT_ALIGNMENT
1209
#endif
1210
1211
/* For most ports anything that evaluates to a constant symbolic
1212
or integer value is acceptable as a constant address. */
1213
#ifndef CONSTANT_ADDRESS_P
1214
#define CONSTANT_ADDRESS_P(X) (CONSTANT_P (X) && GET_CODE (X) != CONST_DOUBLE)
1215
#endif
1216
1217
#ifndef MAX_FIXED_MODE_SIZE
1218
#define MAX_FIXED_MODE_SIZE GET_MODE_BITSIZE (DImode)
1219
#endif
1220
1221
/* Nonzero if structures and unions should be returned in memory.
1222
1223
This should only be defined if compatibility with another compiler or
1224
with an ABI is needed, because it results in slower code. */
1225
1226
#ifndef DEFAULT_PCC_STRUCT_RETURN
1227
#define DEFAULT_PCC_STRUCT_RETURN 1
1228
#endif
1229
1230
#ifdef GCC_INSN_FLAGS_H
1231
/* Dependent default target macro definitions
1232
1233
This section of defaults.h defines target macros that depend on generated
1234
headers. This is a bit awkward: We want to put all default definitions
1235
for target macros in defaults.h, but some of the defaults depend on the
1236
HAVE_* flags defines of insn-flags.h. But insn-flags.h is not always
1237
included by files that do include defaults.h.
1238
1239
Fortunately, the default macro definitions that depend on the HAVE_*
1240
macros are also the ones that will only be used inside GCC itself, i.e.
1241
not in the gen* programs or in target objects like libgcc.
1242
1243
Obviously, it would be best to keep this section of defaults.h as small
1244
as possible, by converting the macros defined below to target hooks or
1245
functions.
1246
*/
1247
1248
/* The default branch cost is 1. */
1249
#ifndef BRANCH_COST
1250
#define BRANCH_COST(speed_p, predictable_p) 1
1251
#endif
1252
1253
/* If a memory-to-memory move would take MOVE_RATIO or more simple
1254
move-instruction sequences, we will do a movmem or libcall instead. */
1255
1256
#ifndef MOVE_RATIO
1257
#if defined (HAVE_movmemqi) || defined (HAVE_movmemhi) || defined (HAVE_movmemsi) || defined (HAVE_movmemdi) || defined (HAVE_movmemti)
1258
#define MOVE_RATIO(speed) 2
1259
#else
1260
/* If we are optimizing for space (-Os), cut down the default move ratio. */
1261
#define MOVE_RATIO(speed) ((speed) ? 15 : 3)
1262
#endif
1263
#endif
1264
1265
/* If a clear memory operation would take CLEAR_RATIO or more simple
1266
move-instruction sequences, we will do a setmem or libcall instead. */
1267
1268
#ifndef CLEAR_RATIO
1269
#if defined (HAVE_setmemqi) || defined (HAVE_setmemhi) || defined (HAVE_setmemsi) || defined (HAVE_setmemdi) || defined (HAVE_setmemti)
1270
#define CLEAR_RATIO(speed) 2
1271
#else
1272
/* If we are optimizing for space, cut down the default clear ratio. */
1273
#define CLEAR_RATIO(speed) ((speed) ? 15 :3)
1274
#endif
1275
#endif
1276
1277
/* If a memory set (to value other than zero) operation would take
1278
SET_RATIO or more simple move-instruction sequences, we will do a movmem
1279
or libcall instead. */
1280
#ifndef SET_RATIO
1281
#define SET_RATIO(speed) MOVE_RATIO (speed)
1282
#endif
1283
1284
/* Supply a default definition for FUNCTION_ARG_PADDING:
1285
usually pad upward, but pad short args downward on
1286
big-endian machines. */
1287
1288
#define DEFAULT_FUNCTION_ARG_PADDING(MODE, TYPE) \
1289
(! BYTES_BIG_ENDIAN \
1290
? upward \
1291
: (((MODE) == BLKmode \
1292
? ((TYPE) && TREE_CODE (TYPE_SIZE (TYPE)) == INTEGER_CST \
1293
&& int_size_in_bytes (TYPE) < (PARM_BOUNDARY / BITS_PER_UNIT)) \
1294
: GET_MODE_BITSIZE (MODE) < PARM_BOUNDARY) \
1295
? downward : upward))
1296
1297
#ifndef FUNCTION_ARG_PADDING
1298
#define FUNCTION_ARG_PADDING(MODE, TYPE) \
1299
DEFAULT_FUNCTION_ARG_PADDING ((MODE), (TYPE))
1300
#endif
1301
1302
/* Supply a default definition of STACK_SAVEAREA_MODE for emit_stack_save.
1303
Normally move_insn, so Pmode stack pointer. */
1304
1305
#ifndef STACK_SAVEAREA_MODE
1306
#define STACK_SAVEAREA_MODE(LEVEL) Pmode
1307
#endif
1308
1309
/* Supply a default definition of STACK_SIZE_MODE for
1310
allocate_dynamic_stack_space. Normally PLUS/MINUS, so word_mode. */
1311
1312
#ifndef STACK_SIZE_MODE
1313
#define STACK_SIZE_MODE word_mode
1314
#endif
1315
1316
/* Provide default values for the macros controlling stack checking. */
1317
1318
/* The default is neither full builtin stack checking... */
1319
#ifndef STACK_CHECK_BUILTIN
1320
#define STACK_CHECK_BUILTIN 0
1321
#endif
1322
1323
/* ...nor static builtin stack checking. */
1324
#ifndef STACK_CHECK_STATIC_BUILTIN
1325
#define STACK_CHECK_STATIC_BUILTIN 0
1326
#endif
1327
1328
/* The default interval is one page (4096 bytes). */
1329
#ifndef STACK_CHECK_PROBE_INTERVAL_EXP
1330
#define STACK_CHECK_PROBE_INTERVAL_EXP 12
1331
#endif
1332
1333
/* The default is not to move the stack pointer. */
1334
#ifndef STACK_CHECK_MOVING_SP
1335
#define STACK_CHECK_MOVING_SP 0
1336
#endif
1337
1338
/* This is a kludge to try to capture the discrepancy between the old
1339
mechanism (generic stack checking) and the new mechanism (static
1340
builtin stack checking). STACK_CHECK_PROTECT needs to be bumped
1341
for the latter because part of the protection area is effectively
1342
included in STACK_CHECK_MAX_FRAME_SIZE for the former. */
1343
#ifdef STACK_CHECK_PROTECT
1344
#define STACK_OLD_CHECK_PROTECT STACK_CHECK_PROTECT
1345
#else
1346
#define STACK_OLD_CHECK_PROTECT \
1347
(targetm_common.except_unwind_info (&global_options) == UI_SJLJ \
1348
? 75 * UNITS_PER_WORD \
1349
: 8 * 1024)
1350
#endif
1351
1352
/* Minimum amount of stack required to recover from an anticipated stack
1353
overflow detection. The default value conveys an estimate of the amount
1354
of stack required to propagate an exception. */
1355
#ifndef STACK_CHECK_PROTECT
1356
#define STACK_CHECK_PROTECT \
1357
(targetm_common.except_unwind_info (&global_options) == UI_SJLJ \
1358
? 75 * UNITS_PER_WORD \
1359
: 12 * 1024)
1360
#endif
1361
1362
/* Make the maximum frame size be the largest we can and still only need
1363
one probe per function. */
1364
#ifndef STACK_CHECK_MAX_FRAME_SIZE
1365
#define STACK_CHECK_MAX_FRAME_SIZE \
1366
((1 << STACK_CHECK_PROBE_INTERVAL_EXP) - UNITS_PER_WORD)
1367
#endif
1368
1369
/* This is arbitrary, but should be large enough everywhere. */
1370
#ifndef STACK_CHECK_FIXED_FRAME_SIZE
1371
#define STACK_CHECK_FIXED_FRAME_SIZE (4 * UNITS_PER_WORD)
1372
#endif
1373
1374
/* Provide a reasonable default for the maximum size of an object to
1375
allocate in the fixed frame. We may need to be able to make this
1376
controllable by the user at some point. */
1377
#ifndef STACK_CHECK_MAX_VAR_SIZE
1378
#define STACK_CHECK_MAX_VAR_SIZE (STACK_CHECK_MAX_FRAME_SIZE / 100)
1379
#endif
1380
1381
/* By default, the C++ compiler will use function addresses in the
1382
vtable entries. Setting this nonzero tells the compiler to use
1383
function descriptors instead. The value of this macro says how
1384
many words wide the descriptor is (normally 2). It is assumed
1385
that the address of a function descriptor may be treated as a
1386
pointer to a function. */
1387
#ifndef TARGET_VTABLE_USES_DESCRIPTORS
1388
#define TARGET_VTABLE_USES_DESCRIPTORS 0
1389
#endif
1390
1391
#ifndef SWITCHABLE_TARGET
1392
#define SWITCHABLE_TARGET 0
1393
#endif
1394
1395
#endif
/* GCC_INSN_FLAGS_H */
1396
1397
#endif
/* ! GCC_DEFAULTS_H */
gcc
defaults.h
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