461 lines
14 KiB
C
461 lines
14 KiB
C
/* Definitions of various defaults for tm.h macros.
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Copyright (C) 1992, 1996, 1997, 1998, 1999, 2000, 2001
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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 2, 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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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING. If not, write to the Free
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Software Foundation, 59 Temple Place - Suite 330, Boston, MA
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02111-1307, USA. */
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#ifndef GCC_DEFAULTS_H
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#define GCC_DEFAULTS_H
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/* Define default standard character escape sequences. */
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#ifndef TARGET_BELL
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# define TARGET_BELL 007
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# define TARGET_BS 010
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# define TARGET_TAB 011
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# define TARGET_NEWLINE 012
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# define TARGET_VT 013
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# define TARGET_FF 014
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# define TARGET_CR 015
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# define TARGET_ESC 033
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#endif
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/* Store in OUTPUT a string (made with alloca) containing
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an 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_FORMAT_PRIVATE_NAME
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#define ASM_FORMAT_PRIVATE_NAME(OUTPUT, NAME, LABELNO) \
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do { \
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int len = strlen (NAME); \
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char *temp = (char *) alloca (len + 3); \
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temp[0] = 'L'; \
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strcpy (&temp[1], (NAME)); \
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temp[len + 1] = '.'; \
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temp[len + 2] = 0; \
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(OUTPUT) = (char *) alloca (strlen (NAME) + 11); \
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ASM_GENERATE_INTERNAL_LABEL (OUTPUT, temp, LABELNO); \
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} while (0)
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#endif
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#ifndef ASM_STABD_OP
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#define ASM_STABD_OP "\t.stabd\t"
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#endif
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/* This is how to output an element of a case-vector that is absolute.
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Some targets don't use this, but we have to define it anyway. */
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#ifndef ASM_OUTPUT_ADDR_VEC_ELT
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#define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \
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do { fputs (integer_asm_op (POINTER_SIZE / UNITS_PER_WORD, TRUE), FILE); \
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ASM_OUTPUT_INTERNAL_LABEL (FILE, "L", (VALUE)); \
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fputc ('\n', FILE); \
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} while (0)
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#endif
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/* Provide default for ASM_OUTPUT_ALTERNATE_LABEL_NAME. */
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#ifndef ASM_OUTPUT_ALTERNATE_LABEL_NAME
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#define ASM_OUTPUT_ALTERNATE_LABEL_NAME(FILE,INSN) \
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do { ASM_OUTPUT_LABEL(FILE,LABEL_ALTERNATE_NAME (INSN)); } while (0)
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#endif
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/* choose a reasonable default for ASM_OUTPUT_ASCII. */
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#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 \
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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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/* 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) asm_fprintf ((FILE), "%U%s", (NAME))
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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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ASM_OUTPUT_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 determines whether or not we support weak symbols. */
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#ifndef SUPPORTS_WEAK
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#ifdef ASM_WEAKEN_LABEL
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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
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#endif
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/* This determines whether or not we support link-once semantics. */
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#ifndef SUPPORTS_ONE_ONLY
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#ifdef MAKE_DECL_ONE_ONLY
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#define SUPPORTS_ONE_ONLY 1
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#else
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#define SUPPORTS_ONE_ONLY 0
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#endif
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#endif
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/* If the target supports weak symbols, define TARGET_ATTRIBUTE_WEAK to
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provide a weak attribute. Else define it to nothing.
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This would normally belong in ansidecl.h, but SUPPORTS_WEAK is
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not available at that time.
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Note, this is only for use by target files which we know are to be
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compiled by GCC. */
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#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
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# define TARGET_ATTRIBUTE_WEAK
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# endif
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#endif
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/* If the target supports init_priority C++ attribute, give
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SUPPORTS_INIT_PRIORITY a nonzero value. */
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#ifndef SUPPORTS_INIT_PRIORITY
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#define SUPPORTS_INIT_PRIORITY 1
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#endif /* SUPPORTS_INIT_PRIORITY */
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/* If duplicate library search directories can be removed from a
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linker command without changing the linker's semantics, give this
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symbol a nonzero. */
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#ifndef LINK_ELIMINATE_DUPLICATE_LDIRECTORIES
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#define LINK_ELIMINATE_DUPLICATE_LDIRECTORIES 0
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#endif /* LINK_ELIMINATE_DUPLICATE_LDIRECTORIES */
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/* If we have a definition of INCOMING_RETURN_ADDR_RTX, assume that
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the rest of the DWARF 2 frame unwind support is also provided. */
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#if !defined (DWARF2_UNWIND_INFO) && defined (INCOMING_RETURN_ADDR_RTX)
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#define DWARF2_UNWIND_INFO 1
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#endif
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/* If we have named sections, and we're using crtstuff to run ctors,
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use them for registering eh frame information. */
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#if defined (TARGET_ASM_NAMED_SECTION) && !defined(EH_FRAME_IN_DATA_SECTION)
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#ifndef EH_FRAME_SECTION_NAME
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#define EH_FRAME_SECTION_NAME ".eh_frame"
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#endif
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#endif
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/* If we have named section and we support weak symbols, then use the
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.jcr section for recording java classes which need to be registered
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at program start-up time. */
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#if defined (TARGET_ASM_NAMED_SECTION) && SUPPORTS_WEAK
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#ifndef JCR_SECTION_NAME
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#define JCR_SECTION_NAME ".jcr"
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#endif
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#endif
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/* If we have no definition for UNIQUE_SECTION, but do have the
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ability to generate arbitrary sections, construct something
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reasonable. */
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#ifndef UNIQUE_SECTION
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#define UNIQUE_SECTION(DECL,RELOC) \
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do { \
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int len; \
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const char *name; \
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char *string; \
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\
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name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (DECL)); \
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/* Strip off any encoding in name. */ \
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STRIP_NAME_ENCODING (name, name); \
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\
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len = strlen (name) + 1; \
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string = alloca (len + 1); \
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sprintf (string, ".%s", name); \
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\
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DECL_SECTION_NAME (DECL) = build_string (len, string); \
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} while (0)
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#endif
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/* By default, we generate a label at the beginning and end of the
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text section, and compute the size of the text section by
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subtracting the two. However, on some platforms that doesn't
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work, and we use the section itself, rather than a label at the
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beginning of it, to indicate the start of the section. On such
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platforms, define this to zero. */
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#ifndef DWARF2_GENERATE_TEXT_SECTION_LABEL
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#define DWARF2_GENERATE_TEXT_SECTION_LABEL 1
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#endif
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/* Supply a default definition for PROMOTE_PROTOTYPES. */
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#ifndef PROMOTE_PROTOTYPES
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#define PROMOTE_PROTOTYPES 0
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#endif
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/* Number of hardware registers that go into the DWARF-2 unwind info.
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If not defined, equals FIRST_PSEUDO_REGISTER */
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#ifndef DWARF_FRAME_REGISTERS
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#define DWARF_FRAME_REGISTERS FIRST_PSEUDO_REGISTER
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#endif
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/* How to renumber registers for dbx and gdb. If not defined, assume
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no renumbering is necessary. */
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#ifndef DBX_REGISTER_NUMBER
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#define DBX_REGISTER_NUMBER(REGNO) (REGNO)
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#endif
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/* Default sizes for base C types. If the sizes are different for
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your target, you should override these values by defining the
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appropriate symbols in your tm.h file. */
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#ifndef CHAR_TYPE_SIZE
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#define CHAR_TYPE_SIZE BITS_PER_UNIT
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#endif
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#ifndef SHORT_TYPE_SIZE
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#define SHORT_TYPE_SIZE (BITS_PER_UNIT * MIN ((UNITS_PER_WORD + 1) / 2, 2))
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#endif
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#ifndef INT_TYPE_SIZE
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#define INT_TYPE_SIZE BITS_PER_WORD
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#endif
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#ifndef LONG_TYPE_SIZE
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#define LONG_TYPE_SIZE BITS_PER_WORD
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#endif
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#ifndef LONG_LONG_TYPE_SIZE
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#define LONG_LONG_TYPE_SIZE (BITS_PER_WORD * 2)
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#endif
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#ifndef WCHAR_TYPE_SIZE
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#define WCHAR_TYPE_SIZE INT_TYPE_SIZE
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#endif
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#ifndef WCHAR_UNSIGNED
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#define WCHAR_UNSIGNED 0
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#endif
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#ifndef FLOAT_TYPE_SIZE
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#define FLOAT_TYPE_SIZE BITS_PER_WORD
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#endif
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#ifndef DOUBLE_TYPE_SIZE
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#define DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2)
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#endif
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#ifndef LONG_DOUBLE_TYPE_SIZE
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#define LONG_DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2)
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#endif
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#ifndef BUILD_VA_LIST_TYPE
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#define BUILD_VA_LIST_TYPE(X) ((X) = ptr_type_node)
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#endif
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#ifndef PIC_OFFSET_TABLE_REGNUM
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#define PIC_OFFSET_TABLE_REGNUM INVALID_REGNUM
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#endif
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/* Type used by GCOV counters. Use 64bit data type if target supports
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it. */
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#if LONG_TYPE_SIZE >= 64
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#define GCOV_TYPE_SIZE LONG_TYPE_SIZE
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#else
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#define GCOV_TYPE_SIZE LONG_LONG_TYPE_SIZE
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#endif
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/* By default, the preprocessor should be invoked the same way in C++
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as in C. */
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#ifndef CPLUSPLUS_CPP_SPEC
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#ifdef CPP_SPEC
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#define CPLUSPLUS_CPP_SPEC CPP_SPEC
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#endif
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#endif
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#ifndef ACCUMULATE_OUTGOING_ARGS
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#define ACCUMULATE_OUTGOING_ARGS 0
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#endif
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/* Supply a default definition for PUSH_ARGS. */
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#ifndef PUSH_ARGS
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#ifdef PUSH_ROUNDING
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#define PUSH_ARGS !ACCUMULATE_OUTGOING_ARGS
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#else
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#define PUSH_ARGS 0
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#endif
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#endif
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/* If PREFERRED_STACK_BOUNDARY is not defined, set it to STACK_BOUNDARY.
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STACK_BOUNDARY is required. */
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#ifndef PREFERRED_STACK_BOUNDARY
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#define PREFERRED_STACK_BOUNDARY STACK_BOUNDARY
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#endif
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/* By default, the C++ compiler will use function addresses in the
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vtable entries. Setting this non-zero tells the compiler to use
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function descriptors instead. The value of this macro says how
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many words wide the descriptor is (normally 2). It is assumed
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that the address of a function descriptor may be treated as a
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pointer to a function. */
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#ifndef TARGET_VTABLE_USES_DESCRIPTORS
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#define TARGET_VTABLE_USES_DESCRIPTORS 0
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#endif
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/* Select a format to encode pointers in exception handling data. We
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prefer those that result in fewer dynamic relocations. Assume no
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special support here and encode direct references. */
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#ifndef ASM_PREFERRED_EH_DATA_FORMAT
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#define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) DW_EH_PE_absptr
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#endif
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/* By default, the C++ compiler will use the lowest bit of the pointer
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to function to indicate a pointer-to-member-function points to a
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virtual member function. However, if FUNCTION_BOUNDARY indicates
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function addresses aren't always even, the lowest bit of the delta
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field will be used. */
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#ifndef TARGET_PTRMEMFUNC_VBIT_LOCATION
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#define TARGET_PTRMEMFUNC_VBIT_LOCATION \
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(FUNCTION_BOUNDARY >= 2 * BITS_PER_UNIT \
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? ptrmemfunc_vbit_in_pfn : ptrmemfunc_vbit_in_delta)
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#endif
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/* True if it is possible to profile code that does not have a frame
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pointer. */
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#ifndef TARGET_ALLOWS_PROFILING_WITHOUT_FRAME_POINTER
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#define TARGET_ALLOWS_PROFILING_WITHOUT_FRAME_POINTER true
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#endif
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#ifndef DEFAULT_GDB_EXTENSIONS
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#define DEFAULT_GDB_EXTENSIONS 1
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#endif
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/* If more than one debugging type is supported, you must define
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PREFERRED_DEBUGGING_TYPE to choose a format in a system-dependent way.
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This is one long line cause VAXC can't handle a \-newline. */
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#if 1 < (defined (DBX_DEBUGGING_INFO) + defined (SDB_DEBUGGING_INFO) + defined (DWARF_DEBUGGING_INFO) + defined (DWARF2_DEBUGGING_INFO) + defined (XCOFF_DEBUGGING_INFO) + defined (VMS_DEBUGGING_INFO))
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#ifndef PREFERRED_DEBUGGING_TYPE
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You Lose! You must define PREFERRED_DEBUGGING_TYPE!
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#endif /* no PREFERRED_DEBUGGING_TYPE */
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#else /* Only one debugging format supported. Define PREFERRED_DEBUGGING_TYPE
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so other code needn't care. */
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#ifdef DBX_DEBUGGING_INFO
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#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
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#endif
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#ifdef SDB_DEBUGGING_INFO
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#define PREFERRED_DEBUGGING_TYPE SDB_DEBUG
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#endif
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#ifdef DWARF_DEBUGGING_INFO
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#define PREFERRED_DEBUGGING_TYPE DWARF_DEBUG
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#endif
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#ifdef DWARF2_DEBUGGING_INFO
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#define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
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#endif
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#ifdef VMS_DEBUGGING_INFO
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#define PREFERRED_DEBUGGING_TYPE VMS_AND_DWARF2_DEBUG
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#endif
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#ifdef XCOFF_DEBUGGING_INFO
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#define PREFERRED_DEBUGGING_TYPE XCOFF_DEBUG
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#endif
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#endif /* More than one debugger format enabled. */
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/* If still not defined, must have been because no debugging formats
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are supported. */
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#ifndef PREFERRED_DEBUGGING_TYPE
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#define PREFERRED_DEBUGGING_TYPE NO_DEBUG
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#endif
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/* This is set to 1 if BYTES_BIG_ENDIAN is defined but the target uses a
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little-endian method of passing and returning structures in registers.
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On the HP-UX IA64 and PA64 platforms structures are aligned differently
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then integral values and setting this value to 1 will allow for the
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special handling of structure arguments and return values in regs. */
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#ifndef FUNCTION_ARG_REG_LITTLE_ENDIAN
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#define FUNCTION_ARG_REG_LITTLE_ENDIAN 0
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#endif
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/* Determine the register class for registers suitable to be the base
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address register in a MEM. Allow the choice to be dependent upon
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the mode of the memory access. */
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#ifndef MODE_BASE_REG_CLASS
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#define MODE_BASE_REG_CLASS(MODE) BASE_REG_CLASS
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#endif
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#endif /* ! GCC_DEFAULTS_H */
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