news.h

gcc3.2.1源代码

/* Definitions of target machine for GNU compiler.  SONY NEWS-OS 4 version.
   Copyright (C) 1987, 1989, 1993, 1994, 1996, 1997, 1998, 1999
   Free Software Foundation, Inc.

This file is part of GNU CC.

GNU CC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.

GNU CC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with GNU CC; see the file COPYING.  If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.  */

#ifndef USE_GAS
/* This controls conditionals in m68k.h.  */
#define MOTOROLA		/* Use Motorola syntax rather than "MIT" */
#define SGS_NO_LI		/* Suppress jump table label usage */
#endif

#define NEWS
#define NO_DOLLAR_IN_LABEL
#define NO_DOT_IN_LABEL

#include "m68k/m68k.h"

/* See m68k.h.  7 means 68020 with 68881.  */

#define TARGET_DEFAULT (MASK_BITFIELD|MASK_68881|MASK_68020)

/* Define __HAVE_68881__ in preprocessor, unless -msoft-float is specified.
   This will control the use of inline 68881 insns in certain macros.  */

#define CPP_SPEC "%{!msoft-float:-D__HAVE_68881__}"

/* Names to predefine in the preprocessor for this target machine.  */
/* These are the ones defined by Sony, plus mc68000 for uniformity with
   GCC on other 68000 systems.  */

#ifdef MOTOROLA
#define CPP_PREDEFINES "-Dunix -Dbsd43 -Dsony -Dsony_news -Dmc68000 -Dmc68020 -Dnews700 -D__motorola__ -Asystem=unix -Asystem=bsd -Acpu=m68k -Amachine=m68k"
#else
#define CPP_PREDEFINES "-Dunix -Dbsd43 -Dsony -Dsony_news -Dmc68000 -Dmc68020 -Dnews700 -Asystem=unix -Asystem=bsd -Acpu=m68k -Amachine=m68k"
#endif

/* These conditionals tested for different submodels,
   but they were incorrect since they tested the host rather than the target.
   The choice of model shouldn't actually matter.  */

#if 0
#ifdef news800
#define CPP_PREDEFINES "-Dunix -Dbsd43 -Dsony -Dsony_news -Dmc68000 -Dmc68020 -Dnews800 -Asystem=unix -Asystem=bsd -Acpu=m68k -Amachine=m68k"
#endif
#ifdef news900
#define CPP_PREDEFINES "-Dunix -Dbsd43 -Dsony -Dsony_news -Dmc68000 -Dmc68020 -Dnews900 -Asystem=unix -Asystem=bsd -Acpu=m68k -Amachine=m68k"
#endif
#ifdef news1500
#define CPP_PREDEFINES "-Dunix -Dbsd43 -Dsony -Dsony_news -Dmc68000 -Dmc68020 -Dmc68030 -Dnews1500 -Asystem=unix -Asystem=bsd -Acpu=m68k -Amachine=m68k"
#endif
#ifdef news1700
#define CPP_PREDEFINES "-Dunix -Dbsd43 -Dsony -Dsony_news -Dmc68000 -Dmc68020 -Dmc68030 -Dnews1700 -Asystem=unix -Asystem=bsd -Acpu=m68k -Amachine=m68k"
#endif
#ifdef news1800
#define CPP_PREDEFINES "-Dunix -Dbsd43 -Dsony -Dsony_news -Dmc68000 -Dmc68020 -Dmc68030 -Dnews1800 -Asystem=unix -Asystem=bsd -Acpu=m68k -Amachine=m68k"
#endif
#ifdef news1900
#define CPP_PREDEFINES "-Dunix -Dbsd43 -Dsony -Dsony_news -Dmc68000 -Dmc68020 -Dmc68030 -Dnews1900 -Asystem=unix -Asystem=bsd -Acpu=m68k -Amachine=m68k"
#endif
#endif

/* Link with libg.a when debugging, for dbx's sake.  */

#define LIB_SPEC "%{g:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p} "

/* This is BSD, so it wants DBX format.  */

#define DBX_DEBUGGING_INFO

#if 0
/* This is to be compatible with types.h.
   It was found to be necessary with Newsos 3.  */

#define SIZE_TYPE "long int"
#endif

/* Override parts of m68k.h to fit Sony's assembler syntax.  */

#undef BIGGEST_ALIGNMENT
#undef CALL_USED_REGISTERS
#undef FUNCTION_VALUE
#undef LIBCALL_VALUE
#undef FUNCTION_PROFILER

#ifdef MOTOROLA
#undef REGISTER_NAMES
#undef ASM_OUTPUT_REG_PUSH
#undef ASM_OUTPUT_REG_POP
#undef ASM_OUTPUT_SKIP
#undef ASM_FORMAT_PRIVATE_NAME
#endif  

#undef ASM_OUTPUT_ALIGN

/* There is no point aligning anything to a rounder boundary than this.  */
#define BIGGEST_ALIGNMENT 32

/* A bitfield declared as `int' forces `int' alignment for the struct.  */
#define PCC_BITFIELD_TYPE_MATTERS 1
  
/* NEWS makes d2, d3, fp2 and fp3 unsaved registers, unlike the Sun system.  */
  
#define CALL_USED_REGISTERS \
 {1, 1, 1, 1, 0, 0, 0, 0, \
  1, 1, 0, 0, 0, 0, 0, 1, \
  1, 1, 1, 1, 0, 0, 0, 0}

/* NEWS returns floats and doubles in fp0, not d0/d1.  */

#define FUNCTION_VALUE(VALTYPE,FUNC) LIBCALL_VALUE (TYPE_MODE (VALTYPE))

#define LIBCALL_VALUE(MODE)					\
 gen_rtx_REG ((MODE),						\
	      ((TARGET_68881					\
		&& ((MODE) == SFmode || (MODE) == DFmode	\
		    || (MODE) == XFmode))			\
	       ? 16 : 0))

#define ASM_OUTPUT_ALIGN(FILE,LOG)	\
  fprintf (FILE, "\t.align %d\n", (LOG))

#ifdef MOTOROLA

#define FUNCTION_PROFILER(FILE, LABEL_NO) \
   fprintf (FILE, "\tmove.l #LP%d,d0\n\tjsr mcount\n", (LABEL_NO));

/* Difference from m68k.h is in `fp' instead of `a6'.  */

#define REGISTER_NAMES \
{"d0", "d1", "d2", "d3", "d4", "d5", "d6", "d7",	\
 "a0", "a1", "a2", "a3", "a4", "a5", "fp", "sp",	\
 "fp0", "fp1", "fp2", "fp3", "fp4", "fp5", "fp6", "fp7"}

/* This is how to output an insn to push a register on the stack.
   It need not be very fast code.  */

#define ASM_OUTPUT_REG_PUSH(FILE,REGNO)  \
  fprintf (FILE, "\tmove.l %s,-(sp)\n", reg_names[REGNO])

/* This is how to output an insn to pop a register from the stack.
   It need not be very fast code.  */

#define ASM_OUTPUT_REG_POP(FILE,REGNO)  \
  fprintf (FILE, "\tmove.l (sp)+,%s\n", reg_names[REGNO])
  
#define ASM_OUTPUT_SKIP(FILE,SIZE)  \
  fprintf (FILE, "\t.space %u\n", (SIZE))

#if 0
/* The NEWS assembler in version 3.4 complains about fmove.d, but this
   macro proved not to work right.  3.4 is old, so forget about it.  */
#define ASM_OUTPUT_OPCODE(FILE, STRING) \
{						\
  if (!strncmp (STRING, "fmove.d", 7)		\
      && CONSTANT_P (operands[1]))		\
    {						\
      fprintf (FILE, "fmove.x");		\
      STRING += 7;				\
    }						\
}
#endif

/* Store in OUTPUT a string (made with alloca) containing
   an assembler-name for a local static variable named NAME.
   LABELNO is an integer which is different for each call.  */

#define ASM_FORMAT_PRIVATE_NAME(OUTPUT, NAME, LABELNO)	\
( (OUTPUT) = (char *) alloca (strlen ((NAME)) + 13),	\
  sprintf ((OUTPUT), "%s$$$%d", (NAME), (LABELNO)))

/* Output a float value (represented as a C double) as an immediate operand.
   This macro is a 68k-specific macro.  */

#undef ASM_OUTPUT_FLOAT_OPERAND
#define ASM_OUTPUT_FLOAT_OPERAND(CODE,FILE,VALUE)			\
 do {									\
      if (CODE == 'f')							\
        {								\
          char dstr[30];						\
          REAL_VALUE_TO_DECIMAL (VALUE, "%.9e", dstr);			\
          if (REAL_VALUE_ISINF (VALUE) || REAL_VALUE_ISNAN (VALUE))	\
	    {								\
	      if (REAL_VALUE_NEGATIVE (VALUE))				\
		fprintf (FILE, "#0f-99e999");				\
	      else							\
		fprintf (FILE, "#0f99e999");				\
	    }								\
          else if (REAL_VALUE_MINUS_ZERO (VALUE))			\
            fprintf (FILE, "#0f-0.0");					\
          else								\
            fprintf (FILE, "#0f%s", dstr); 				\
        }								\
      else								\
        {								\
          long l;							\
          REAL_VALUE_TO_TARGET_SINGLE (VALUE, l);			\
          fprintf (FILE, "#0x%lx", l);					\
        }								\
     } while (0)

/* Output a double value (represented as a C double) as an immediate operand.
   This macro is a 68k-specific macro.  */
#undef ASM_OUTPUT_DOUBLE_OPERAND
#define ASM_OUTPUT_DOUBLE_OPERAND(FILE,VALUE)				\