mot3300.h

GUN开源阻止下的编译器GCC

/* Definitions of target machine for GNU compiler,
   SysV68 Motorola 3300 Delta Series.
   Copyright (C) 1987, 1993, 1994, 1995 Free Software Foundation, Inc.
   Contributed by Abramo and Roberto Bagnara ([e-mail])
   based on Alex Crain's 3B1 definitions.
   Maintained by Philippe De Muyter ([e-mail]).

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.  */

#define MOTOROLA		/* Use Motorola syntax rather than "MIT" */
#define MOTOROLA_BSR		/* Use Span-dependent optimized bsr */
#define SGS			/* Uses SGS assembler */
#define SGS_CMP_ORDER		/* Takes cmp operands in reverse order */
#define SGS_SWAP_W		/* Use swap.w rather than just plain swap */

#define NO_DOLLAR_IN_LABEL
#define NO_DOT_IN_LABEL

#include "m68k/m68k.h"

/* See m68k.h.  0407 means 68020-68040.  */

#ifndef TARGET_DEFAULT
#define	TARGET_DEFAULT 0407
#endif

/* -m[c]6800 requires special flag to the assembler.  */

#undef ASM_SPEC
#define ASM_SPEC "%{m68000:-p 000}%{mc68000:-p 000}"

/* NYI: FP= is equivalent to -msoft-float  */

/* We use /lib/libp/lib* when profiling.  */

/* NYI: if FP=M68881U library is -lc881u  */
/* NYI: if FP= library is -lc.  */
/* Default for us: FP=M68881 library is -lc881  */
#undef LIB_SPEC
#define LIB_SPEC "%{!shlib:%{p:-L/usr/lib/libp} %{pg:-L/usr/lib/libp} -lc881}"

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

/* Shared libraries need to use crt0s.o  */

#undef STARTFILE_SPEC
#define STARTFILE_SPEC \
  "%{!shlib:%{pg:mcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}}}\
   %{shlib:crt0s.o%s shlib.ifile%s} "

/* Generate calls to memcpy, memcmp and memset.  */

#define TARGET_MEM_FUNCTIONS

/* size_t is unsigned int.  */

#define SIZE_TYPE "unsigned int"

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

#define STRUCTURE_SIZE_BOUNDARY 16

/* Follow sysV68 cc regarding alignment imposed by char:0; */

#define PCC_BITFIELD_TYPE_MATTERS 1
  
/* Allocation boundary (in *bits*) for storing arguments in argument list.  */
/* Be compatible with native compiler.  */
#undef PARM_BOUNDARY
#define PARM_BOUNDARY 16

/* cpp has to support a #sccs directive for the /usr/include files */

#define SCCS_DIRECTIVE

/* Make output for SDB.  */

#define SDB_DEBUGGING_INFO

#undef REGISTER_PREFIX
#define REGISTER_PREFIX "%"

#if 0
#undef LOCAL_LABEL_PREFIX
#define LOCAL_LABEL_PREFIX "~"
#endif

#undef IMMEDIATE_PREFIX
#define IMMEDIATE_PREFIX "&"

#undef REGISTER_NAMES
#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"}

#undef FUNCTION_EXTRA_EPILOGUE
#define FUNCTION_EXTRA_EPILOGUE(FILE, SIZE)				\
  { extern int current_function_returns_pointer;			\
    if ((current_function_returns_pointer) &&				\
      ! find_equiv_reg (0, get_last_insn (), 0, 0, 0, 8, Pmode))        \
      asm_fprintf (FILE, "\tmov.l %Ra0,%Rd0\n"); } 

#undef FUNCTION_PROFILER
#define FUNCTION_PROFILER(FILE, LABEL_NO)	\
    fprintf (FILE, "\tmov.l &LP%%%d,%%a0\n\tjsr mcount%%\n", (LABEL_NO))

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

#undef ASM_OUTPUT_REG_PUSH
#define ASM_OUTPUT_REG_PUSH(FILE,REGNO)  \
  fprintf (FILE, "\tmov.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.  */

#undef ASM_OUTPUT_REG_POP
#define ASM_OUTPUT_REG_POP(FILE,REGNO)  \
  fprintf (FILE, "\tmov.l (%%sp)+,%s\n", reg_names[REGNO])

#undef ASM_APP_ON
#define ASM_APP_ON ""

#undef ASM_APP_OFF
#define ASM_APP_OFF ""

#undef TEXT_SECTION_ASM_OP
#define TEXT_SECTION_ASM_OP "text"
#undef DATA_SECTION_ASM_OP
#define DATA_SECTION_ASM_OP "data"
#undef ASCII_DATA_ASM_OP
#define	ASCII_DATA_ASM_OP "byte"

/* The file command should always begin the output.  */

#undef ASM_FILE_START
#define ASM_FILE_START(FILE) \
output_file_directive ((FILE), main_input_filename)

/* The sysV68 assembler does not accept dots in labels.
   Let's use percent instead  */

#define ASM_IDENTIFY_GCC(FILE)        fputs("gcc2_compiled%:\n", FILE)

/* Names to predefine in the preprocessor for this target machine.  */
/* ihnp4!lmayk![e-mail] says mc68000 and m68k should not be here,
   on the other hand I don't care what he says.  */

#undef CPP_PREDEFINES
#define CPP_PREDEFINES "-Dm68k -Dunix -DsysV68 -D__motorola__ -Asystem(unix) -Asystem(svr3) -Acpu(m68k) -Amachine(m68k)"

#undef TARGET_VERSION
#define TARGET_VERSION fprintf (stderr, " (68k, SGS/AT&T sysV68 syntax)");

/* Function calls save all but a0, a1, d0, d1, fp0, fp1.  */

#undef CALL_USED_REGISTERS
#define CALL_USED_REGISTERS						\
 {1, 1, 0, 0, 0, 0, 0, 0,						\
  1, 1, 0, 0, 0, 0, 0, 1,						\
  1, 1, 0, 0, 0, 0, 0, 0}

/* This will return small structs in d0.  */
#define RETURN_IN_MEMORY(type) \
  ((TYPE_MODE (type) == BLKmode) \
   || (AGGREGATE_TYPE_P (type) \
       && GET_MODE_SIZE (TYPE_MODE (type)) > UNITS_PER_WORD))

/* Don't default to pcc-struct-return, because we have already specified
   exactly how to return structures in the RETURN_IN_MEMORY macro.  */
#define DEFAULT_PCC_STRUCT_RETURN 0

/* If TARGET_68881, return SF and DF values in fp0 instead of d0.  */
/* NYI: If FP=M68881U return SF and DF values in d0. */
/* NYI: If -mold return pointer in a0 and d0 */

#undef FUNCTION_VALUE
/* sysV68 (brain damaged) cc convention support. */
#define FUNCTION_VALUE(VALTYPE,FUNC) \
  (TREE_CODE (VALTYPE) == REAL_TYPE && TARGET_68881 	\
   ? gen_rtx (REG, TYPE_MODE (VALTYPE), 16)		\
   : (POINTER_TYPE_P (VALTYPE)				\
      ? gen_rtx (REG, TYPE_MODE (VALTYPE), 8)		\
      : gen_rtx (REG, TYPE_MODE (VALTYPE), 0)))

/* If TARGET_68881, SF and DF values are returned in fp0 instead of d0.  */

/* Is LIBCALL_VALUE never called with a pointer ? */
#undef LIBCALL_VALUE
#define LIBCALL_VALUE(MODE)						   \
 gen_rtx (REG, (MODE),							   \
	  ((TARGET_68881						   \
	    && ((MODE) == SFmode || (MODE) == DFmode || (MODE) == XFmode)) \
	   ? 16 : 0))

/* 1 if N is a possible register number for a function value.
   d0 may be used, and fp0 as well if -msoft-float is not specified.  */

#undef FUNCTION_VALUE_REGNO_P
/* sysV68 (brain damaged) cc convention support. */
#define FUNCTION_VALUE_REGNO_P(N) \
 ((N) == 0 || (N) == 8 || (TARGET_68881 && (N) == 16))

/* Define this to be true when FUNCTION_VALUE_REGNO_P is true for
   more than one register.  */

#undef NEEDS_UNTYPED_CALL
#define NEEDS_UNTYPED_CALL 1
 
/* This is the command to make the user-level label named NAME
   defined for reference from other files.  */

#undef GLOBAL_ASM_OP
#define GLOBAL_ASM_OP "global"

/* 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.  */

#undef ASM_FORMAT_PRIVATE_NAME
#define ASM_FORMAT_PRIVATE_NAME(OUTPUT, NAME, LABELNO)	\
( (OUTPUT) = (char *) alloca (strlen ((NAME)) + 12),	\
  sprintf ((OUTPUT), "%s_%%%d", (NAME), (LABELNO)))

/* The sysV68 as doesn't know about double's and float's.  */
/* This is how to output an assembler line defining a `double' constant.  */

#undef ASM_OUTPUT_DOUBLE
#define ASM_OUTPUT_DOUBLE(FILE,VALUE)  \
do { long l[2];						\
     REAL_VALUE_TO_TARGET_DOUBLE (VALUE, l);		\
     fprintf (FILE, "\tlong 0x%x,0x%x\n", l[0], l[1]); \
   } while (0)

#undef ASM_OUTPUT_LONG_DOUBLE
#define ASM_OUTPUT_LONG_DOUBLE(FILE,VALUE)  				\
do { long l[3];								\
     REAL_VALUE_TO_TARGET_LONG_DOUBLE (VALUE, l);			\
     fprintf (FILE, "\tlong 0x%x,0x%x,0x%x\n", l[0], l[1], l[2]);	\
   } while (0)

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

#undef ASM_OUTPUT_FLOAT
#define ASM_OUTPUT_FLOAT(FILE,VALUE)  \
do { long l;					\
     REAL_VALUE_TO_TARGET_SINGLE (VALUE, l);	\
     fprintf ((FILE), "\tlong 0x%x\n", l);	\
   } while (0)

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

#undef ASM_OUTPUT_INT
#define ASM_OUTPUT_INT(FILE,VALUE)  \
( fprintf (FILE, "\tlong "),			\
  output_addr_const (FILE, (VALUE)),		\
  fprintf (FILE, "\n"))

/* Likewise for `char' and `short' constants.  */

#undef ASM_OUTPUT_SHORT
#define ASM_OUTPUT_SHORT(FILE,VALUE)  \
( fprintf (FILE, "\tshort "),			\
  output_addr_const (FILE, (VALUE)),		\
  fprintf (FILE, "\n"))

#undef ASM_OUTPUT_CHAR
#define ASM_OUTPUT_CHAR(FILE,VALUE)  \
( fprintf (FILE, "\tbyte "),			\
  output_addr_const (FILE, (VALUE)),		\
  fprintf (FILE, "\n"))

/* This is how to output an assembler line for a numeric constant byte.  */

#undef ASM_OUTPUT_BYTE
#define ASM_OUTPUT_BYTE(FILE,VALUE)  \
  fprintf (FILE, "\tbyte 0x%x\n", (VALUE))

/* This is how to output an assembler line
   that says to advance the location counter
   to a multiple of 2**LOG bytes.  */

#undef ASM_OUTPUT_ALIGN
#define ASM_OUTPUT_ALIGN(FILE,LOG)	\
  if ((LOG) == 1)			\
    fprintf (FILE, "\teven\n");		\