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8sa1-gcc/gcc/config/m68k/sun3.h
Jim Wilson 645894f812 entered into RCS 
From-SVN: r740
1992-04-13 15:35:46 -07:00

219 lines
7.1 KiB
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/* 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 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, 675 Mass Ave, Cambridge, MA 02139, USA. */
/* This comment is here to see if it will keep Sun's cpp from dying. */
/* If you do not need to generate floating point code for the optional
Sun FPA board, you can safely comment out the SUPPORT_SUN_FPA define
to gain a little speed and code size. */
#define SUPPORT_SUN_FPA
#include "m68k.h"
/* See 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__ }}\
%{m68000:-D__mc68010__}%{mc68000:-D__mc68010__}%{!mc68000:%{!m68000:-D__mc68020__}} \
%{!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__ }\
%{m68000:-D__mc68010__}%{mc68000:-D__mc68010__}%{!mc68000:%{!m68000:-D__mc68020__}} \
%{!ansi:%{m68000:-Dmc68010}%{mc68000:-Dmc68010}%{!mc68000:%{!m68000:-Dmc68020}}}"
#endif
/* Prevent error on `-sun3' and `-target sun3' options. */
#define CC1_SPEC "%{sun3:} %{target:}"
#define PTRDIFF_TYPE "int"
#define SIZE_TYPE "int"
/* We must override m68k.h. */
#undef WCHAR_TYPE
#undef WCHAR_TYPE_SIZE
#define WCHAR_TYPE "short unsigned int"
#define WCHAR_TYPE_SIZE 16
/* These compiler options take an argument. We ignore -target for now. */
#define WORD_SWITCH_TAKES_ARG(STR) \
(!strcmp (STR, "Tdata") || !strcmp (STR, "include") \
|| !strcmp (STR, "imacros") || !strcmp (STR, "target") \
|| !strcmp (STR, "assert") || !strcmp (STR, "aux-info"))
/* -m68000 requires special flags to the assembler. */
#define ASM_SPEC \
"%{m68000:-mc68010}%{mc68000:-mc68010}%{!mc68000:%{!m68000:-mc68020}} \
%{fpic:-k} %{fPIC:-k}"
/* 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.
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 "%{g:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p} \
%{a:/usr/lib/bb_link.o} %{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 "%{g:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p} \
%{a:/usr/lib/bb_link.o} %{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 "%{g:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p} \
%{a:/usr/lib/bb_link.o} %{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. */
#define LINK_SPEC \
"%{!nostdlib:%{!e*:-e start}} -dc -dp %{static:-Bstatic} %{assert*}"
/* 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
/* Allow folding division by zero. */
#define REAL_INFINITY
/* Generate calls to memcpy, memcmp and memset. */
#define TARGET_MEM_FUNCTIONS
/* This is how to output an assembler line defining a `double' constant. */
#undef ASM_OUTPUT_DOUBLE
#define ASM_OUTPUT_DOUBLE(FILE,VALUE) \
{ \
if (REAL_VALUE_ISINF (VALUE)) \
fprintf (FILE, "\t.double 0r%s99e999\n", (VALUE) > 0 ? "" : "-"); \
else if (REAL_VALUE_ISNAN (VALUE)) \
{ \
union { double d; long l[2];} t; \
t.d = (VALUE); \
fprintf (FILE, "\t.long 0x%lx\n\t.long 0x%lx\n", t.l[0], t.l[1]); \
} \
else \
fprintf (FILE, "\t.double 0r%.17g\n", VALUE); \
}
/* This is how to output an assembler line defining a `float' constant. */
#undef ASM_OUTPUT_FLOAT
#define ASM_OUTPUT_FLOAT(FILE,VALUE) \
{ \
if (REAL_VALUE_ISINF (VALUE)) \
fprintf (FILE, "\t.single 0r%s99e999\n", (VALUE) > 0 ? "" : "-"); \
else if (REAL_VALUE_ISNAN (VALUE)) \
{ \
union { float f; long l;} t; \
t.f = (VALUE); \
fprintf (FILE, "\t.long 0x%lx\n", t.l); \
} \
else \
fprintf (FILE, "\t.single 0r%.9g\n", VALUE); \
}
/* This is how to output an assembler lines defining floating operands.
There's no way to output a NaN's fraction, so we lose it. */
#undef ASM_OUTPUT_FLOAT_OPERAND
#define ASM_OUTPUT_FLOAT_OPERAND(FILE,VALUE) \
(REAL_VALUE_ISINF ((VALUE)) \
? (asm_fprintf (FILE, "%I0r%s99e999", ((VALUE) > 0 ? "" : "-")), 0) \
: (VALUE) == -0.0 \
? (asm_fprintf (FILE, "%I0r-0.0"), 0) \
: (asm_fprintf (FILE, "%I0r%.9g", (VALUE)), 0))
#undef ASM_OUTPUT_DOUBLE_OPERAND
#define ASM_OUTPUT_DOUBLE_OPERAND(FILE,VALUE) \
(REAL_VALUE_ISINF ((VALUE)) \
? (asm_fprintf (FILE, "%I0r%s99e999", ((VALUE) > 0 ? "" : "-")), 0) \
: (VALUE) == -0.0 \
? (asm_fprintf (FILE, "%I0r-0.0"), 0) \
: (asm_fprintf (FILE, "%I0r%.17g", (VALUE)), 0))
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