191 lines
6.6 KiB
C
191 lines
6.6 KiB
C
/* Definitions of various defaults for how to do assembler output
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(most of which are designed to be appropriate for GAS or for
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some BSD assembler).
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Copyright (C) 1992, 1996-1999 Free Software Foundation, Inc.
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Contributed by Ron Guilmette (rfg@monkeys.com)
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This file is part of GNU CC.
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GNU CC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU CC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License 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 GNU CC; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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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 ".stabd"
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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 { fprintf (FILE, "\t%s\t", ASM_LONG); \
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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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unsigned char *_hide_p = (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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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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register int c = p[i]; \
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if (c == '\"' || c == '\\') \
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putc ('\\', asm_out_file); \
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if (c >= ' ' && c < 0177) \
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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 \
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&& p[i + 1] >= '0' && p[i + 1] <= '9') \
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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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#ifndef ASM_IDENTIFY_GCC
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/* Default the definition, only if ASM_IDENTIFY_GCC is not set,
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because if it is set, we might not want ASM_IDENTIFY_LANGUAGE
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outputting labels, if we do want it to, then it must be defined
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in the tm.h file. */
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#ifndef ASM_IDENTIFY_LANGUAGE
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#define ASM_IDENTIFY_LANGUAGE(FILE) output_lang_identify (FILE);
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#endif
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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), "\t%s\t", 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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/* 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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/* 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 gansidecl.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 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 defined (DWARF2_UNWIND_INFO) && !defined (EH_FRAME_SECTION)
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# if defined (EH_FRAME_SECTION_ASM_OP)
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# define EH_FRAME_SECTION() eh_frame_section();
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# else
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/* If we aren't using crtstuff to run ctors, don't use it for EH. */
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# if defined (ASM_OUTPUT_SECTION_NAME) && defined (ASM_OUTPUT_CONSTRUCTOR)
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# define EH_FRAME_SECTION_ASM_OP ".section\t.eh_frame,\"aw\""
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# define EH_FRAME_SECTION() \
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do { named_section (NULL_TREE, ".eh_frame", 0); } while (0)
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# endif
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# endif
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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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