tm-sun3.h

来自「这是完整的gcc源代码」· C头文件 代码 · 共 188 行

/* Definitions of target machine for GNU compiler.  Sun 68000/68020 version.
   Copyright (C) 1987, 1988 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 1, 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, 675 Mass Ave, Cambridge, MA 02139, USA.  */

/* This comment is here to see if it will keep Sun's cpp from dying.  */

#include "tm-m68k.h"

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

#ifndef TARGET_DEFAULT
#define TARGET_DEFAULT 7
#endif

/* Define __HAVE_FPA__ or __HAVE_68881__ in preprocessor,
   according to the -m flags.
   This will control the use of inline 68881 insns in certain macros.
   Also inform the program which CPU this is for.  */

#if TARGET_DEFAULT & 02

/* -m68881 is the default */
#define CPP_SPEC \
"%{!msoft-float:%{mfpa:-D__HAVE_FPA__ }%{!mfpa:-D__HAVE_68881__ }}\
%{!ansi:%{m68000:-Dmc68010}%{mc68000:-Dmc68010}%{!mc68000:%{!m68000:-Dmc68020}}}"

#else
#if TARGET_DEFAULT & 0100

/* -mfpa is the default */
#define CPP_SPEC \
"%{!msoft-float:%{m68881:-D__HAVE_68881__ }%{!m68881:-D__HAVE_FPA__ }}\
%{!ansi:%{m68000:-Dmc68010}%{mc68000:-Dmc68010}%{!mc68000:%{!m68000:-Dmc68020}}}"

#else

/* -msoft-float is the default */
#define CPP_SPEC \
"%{m68881:-D__HAVE_68881__ }%{mfpa:-D__HAVE_FPA__ }\
%{!ansi:%{m68000:-Dmc68010}%{mc68000:-Dmc68010}%{!mc68000:%{!m68000:-Dmc68020}}}"

#endif
#endif

/* Prevent error on `-sun3' and `-target sun3' options.  */

#define CC1_SPEC "%{sun3:} %{target:}"

/* These compiler options take an argument.  We ignore -target for now.  */

#define WORD_SWITCH_TAKES_ARG(STR) \
  (!strcmp (STR, "target") || !strcmp (STR, "Tdata"))

/* -m68000 requires special flags to the assembler.  */

#define ASM_SPEC \
 "%{m68000:-mc68010}%{mc68000:-mc68010}%{!mc68000:%{!m68000:-mc68020}}"

/* Names to predefine in the preprocessor for this target machine.  */

#define CPP_PREDEFINES "-Dmc68000 -Dsun -Dunix"

/* STARTFILE_SPEC to include sun floating point initialization
   This is necessary (tr: Sun does it) for both the m68881 and the fpa
   routines.
   Note that includes knowledge of the default specs for gcc, ie. no
   args translates to the same effect as -m68881
   I'm not sure what would happen below if people gave contradictory
   arguments (eg. -msoft-float -mfpa) */

#if TARGET_DEFAULT & 0100
/* -mfpa is the default */
#define STARTFILE_SPEC					\
  "%{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}}	\
   %{m68881:Mcrt1.o%s}					\
   %{msoft-float:Fcrt1.o%s}				\
   %{!m68881:%{!msoft-float:Wcrt1.o%s}}"
#else
#if TARGET_DEFAULT & 2
/* -m68881 is the default */
#define STARTFILE_SPEC					\
  "%{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}}	\
   %{mfpa:Wcrt1.o%s}					\
   %{msoft-float:Fcrt1.o%s}				\
   %{!mfpa:%{!msoft-float:Mcrt1.o%s}}"
#else
/* -msoft-float is the default */
#define STARTFILE_SPEC					\
  "%{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}}	\
   %{m68881:Mcrt1.o%s}					\
   %{mfpa:Wcrt1.o%s}					\
   %{!m68881:%{!mfpa:Fcrt1.o%s}}"
#endif
#endif

/* Specify library to handle `-a' basic block profiling.  */

/* Specify library to handle `-a' basic block profiling.
   Control choice of libm.a (if user says -lm)
   based on fp arith default and options.  */

#if TARGET_DEFAULT & 0100
/* -mfpa is the default */
#define LIB_SPEC "%{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p} \
%{a:/usr/lib/bb_link.o -lc} %{g:-lg} \
%{msoft-float:-L/usr/lib/fsoft}%{m68881:-L/usr/lib/f68881}\
%{!msoft_float:%{!m68881:-L/usr/lib/ffpa}}"
#else
#if TARGET_DEFAULT & 2
/* -m68881 is the default */
#define LIB_SPEC "%{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p} \
%{a:/usr/lib/bb_link.o -lc} %{g:-lg} \
%{msoft-float:-L/usr/lib/fsoft}%{!msoft-float:%{!mfpa:-L/usr/lib/f68881}}\
%{mfpa:-L/usr/lib/ffpa}"
#else
/* -msoft-float is the default */
#define LIB_SPEC "%{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p} \
%{a:/usr/lib/bb_link.o -lc} %{g:-lg} \
%{!m68881:%{!mfpa:-L/usr/lib/fsoft}}%{m68881:-L/usr/lib/f68881}\
%{mfpa:-L/usr/lib/ffpa}"
#endif
#endif

/* Provide required defaults for linker -e and -d switches.
   Also, it is hard to debug with shared libraries,
   so don't use them if going to debug.  */

#define LINK_SPEC "%{!e*:-e start} -dc -dp %{static:-Bstatic} %{-Bstatic}"

/* Every structure or union's size must be a multiple of 2 bytes.  */

#define STRUCTURE_SIZE_BOUNDARY 16

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

#define DBX_DEBUGGING_INFO

/* This is how to output an assembler line defining a `double' constant.  */

#undef ASM_OUTPUT_DOUBLE
#define ASM_OUTPUT_DOUBLE(FILE,VALUE)					\
  (isinf ((VALUE))							\
   ? fprintf (FILE, "\t.double 0r%s99e999\n", ((VALUE) > 0 ? "" : "-")) \
   : double_is_minus_zero ((VALUE))					\
   ? fprintf (FILE, "\t.long 0x80000000,0\n")				\
   : fprintf (FILE, "\t.double 0r%.20e\n", (VALUE)))

/* This is how to output an assembler line defining a `float' constant.  */

#undef ASM_OUTPUT_FLOAT
#define ASM_OUTPUT_FLOAT(FILE,VALUE)					\
  (isinf ((VALUE))							\
   ? fprintf (FILE, "\t.single 0r%s99e999\n", ((VALUE) > 0 ? "" : "-")) \
   : double_is_minus_zero ((VALUE))					\
   ? fprintf (FILE, "\t.long 0x80000000\n")				\
   : fprintf (FILE, "\t.single 0r%.20e\n", (VALUE)))

#undef ASM_OUTPUT_FLOAT_OPERAND
#define ASM_OUTPUT_FLOAT_OPERAND(FILE,VALUE)				\
  (isinf ((VALUE))							\
   ? fprintf (FILE, "#0r%s99e999", ((VALUE) > 0 ? "" : "-")) 		\
   : double_is_minus_zero ((VALUE))					\
   ? fprintf (FILE, "#0r-0.0")						\
   : fprintf (FILE, "#0r%.9g", (VALUE)))

#undef ASM_OUTPUT_DOUBLE_OPERAND
#define ASM_OUTPUT_DOUBLE_OPERAND(FILE,VALUE)				\
  (isinf ((VALUE))							\
   ? fprintf (FILE, "#0r%s99e999", ((VALUE) > 0 ? "" : "-"))		\
   : double_is_minus_zero ((VALUE))					\
   ? fprintf (FILE, "#0r-0.0")						\
   : fprintf (FILE, "#0r%.20g", (VALUE)))