crds.h

gcc-2.95.3 Linux下最常用的C编译器

    { REAL_VALUE_TYPE r;						\
      REAL_VALUE_FROM_CONST_DOUBLE (r, X);				\
      ASM_OUTPUT_LONG_DOUBLE_OPERAND (FILE, r); }			\
  else { putc ('$', FILE); output_addr_const (FILE, X); }}
#endif

/* Note that this contains a kludge that knows that the only reason
   we have an address (plus (label_ref...) (reg...))
   is in the insn before a tablejump, and we know that m68k.md
   generates a label LInnn: on such an insn.  */
#undef PRINT_OPERAND_ADDRESS
#define PRINT_OPERAND_ADDRESS(FILE, ADDR)  \
{ register rtx reg1, reg2, breg, ireg;					\
  register rtx addr = ADDR;						\
  rtx offset;								\
  switch (GET_CODE (addr))						\
    {									\
    case REG:								\
      fprintf (FILE, "(%s)", reg_names[REGNO (addr)]);			\
      break;								\
    case PRE_DEC:							\
      fprintf (FILE, "-(%s)", reg_names[REGNO (XEXP (addr, 0))]);	\
      break;								\
    case POST_INC:							\
      fprintf (FILE, "(%s)+", reg_names[REGNO (XEXP (addr, 0))]);	\
      break;								\
    case PLUS:								\
      reg1 = 0;	reg2 = 0;						\
      ireg = 0;	breg = 0;						\
      offset = 0;							\
      if (CONSTANT_ADDRESS_P (XEXP (addr, 0)))				\
	{								\
	  offset = XEXP (addr, 0);					\
	  addr = XEXP (addr, 1);					\
	}								\
      else if (CONSTANT_ADDRESS_P (XEXP (addr, 1)))			\
	{								\
	  offset = XEXP (addr, 1);					\
	  addr = XEXP (addr, 0);					\
	}								\
      if (GET_CODE (addr) != PLUS) ;					\
      else if (GET_CODE (XEXP (addr, 0)) == SIGN_EXTEND)		\
	{								\
	  reg1 = XEXP (addr, 0);					\
	  addr = XEXP (addr, 1);					\
	}								\
      else if (GET_CODE (XEXP (addr, 1)) == SIGN_EXTEND)		\
	{								\
	  reg1 = XEXP (addr, 1);					\
	  addr = XEXP (addr, 0);					\
	}								\
      else if (GET_CODE (XEXP (addr, 0)) == MULT)			\
	{								\
	  reg1 = XEXP (addr, 0);					\
	  addr = XEXP (addr, 1);					\
	}								\
      else if (GET_CODE (XEXP (addr, 1)) == MULT)			\
	{								\
	  reg1 = XEXP (addr, 1);					\
	  addr = XEXP (addr, 0);					\
	}								\
      else if (GET_CODE (XEXP (addr, 0)) == REG)			\
	{								\
	  reg1 = XEXP (addr, 0);					\
	  addr = XEXP (addr, 1);					\
	}								\
      else if (GET_CODE (XEXP (addr, 1)) == REG)			\
	{								\
	  reg1 = XEXP (addr, 1);					\
	  addr = XEXP (addr, 0);					\
	}								\
      if (GET_CODE (addr) == REG || GET_CODE (addr) == MULT		\
	  || GET_CODE (addr) == SIGN_EXTEND)				\
	{ if (reg1 == 0) reg1 = addr; else reg2 = addr; addr = 0; }	\
      if (offset != 0) { if (addr != 0) abort (); addr = offset; }	\
      if ((reg1 && (GET_CODE (reg1) == SIGN_EXTEND			\
		    || GET_CODE (reg1) == MULT))			\
	  || (reg2 != 0 && REGNO_OK_FOR_BASE_P (REGNO (reg2))))		\
	{ breg = reg2; ireg = reg1; }					\
      else if (reg1 != 0 && REGNO_OK_FOR_BASE_P (REGNO (reg1)))		\
	{ breg = reg1; ireg = reg2; }					\
      if (ireg != 0 && breg == 0 && GET_CODE (addr) == LABEL_REF)	\
        { int scale = 1;						\
	  if (GET_CODE (ireg) == MULT)					\
	    { scale = INTVAL (XEXP (ireg, 1));				\
	      ireg = XEXP (ireg, 0); }					\
	  if (GET_CODE (ireg) == SIGN_EXTEND)				\
	    fprintf (FILE, "L%d-LI%d-2(pc,%s.w",			\
		     CODE_LABEL_NUMBER (XEXP (addr, 0)),		\
		     CODE_LABEL_NUMBER (XEXP (addr, 0)),		\
		     reg_names[REGNO (XEXP (ireg, 0))]); 		\
	  else								\
	    fprintf (FILE, "L%d-LI%d-2(pc,%s.l",			\
		     CODE_LABEL_NUMBER (XEXP (addr, 0)),		\
		     CODE_LABEL_NUMBER (XEXP (addr, 0)),		\
		     reg_names[REGNO (ireg)]);				\
	  if (scale != 1) fprintf (FILE, ":%d", scale);			\
	  putc (')', FILE);						\
	  break; }							\
      if (breg != 0 && ireg == 0 && GET_CODE (addr) == LABEL_REF)	\
        { fprintf (FILE, "L%d-LI%d-2(pc,%s.l",				\
		   CODE_LABEL_NUMBER (XEXP (addr, 0)),			\
		   CODE_LABEL_NUMBER (XEXP (addr, 0)),			\
		   reg_names[REGNO (breg)]);				\
	  putc (')', FILE);						\
	  break; }							\
      if (ireg != 0 || breg != 0)					\
	{ int scale = 1;						\
	  if (breg == 0)						\
	    abort ();							\
	  if (addr && GET_CODE (addr) == LABEL_REF) abort ();		\
	  if (addr != 0)						\
	    output_addr_const (FILE, addr);				\
	  fprintf (FILE, "(%s", reg_names[REGNO (breg)]);		\
	  if (breg != 0 && ireg != 0)					\
	    putc (',', FILE);						\
	  if (ireg != 0 && GET_CODE (ireg) == MULT)			\
	    { scale = INTVAL (XEXP (ireg, 1));				\
	      ireg = XEXP (ireg, 0); }					\
	  if (ireg != 0 && GET_CODE (ireg) == SIGN_EXTEND)		\
	    fprintf (FILE, "%s.w", reg_names[REGNO (XEXP (ireg, 0))]);	\
	  else if (ireg != 0)						\
	    fprintf (FILE, "%s.l", reg_names[REGNO (ireg)]);		\
	  if (scale != 1) fprintf (FILE, ":%d", scale);			\
	  putc (')', FILE);						\
	  break;							\
	}								\
      else if (reg1 != 0 && GET_CODE (addr) == LABEL_REF)		\
	{ fprintf (FILE, "L%d-LI%d-2(pc,%s.l)",				\
		   CODE_LABEL_NUMBER (XEXP (addr, 0)),			\
		   CODE_LABEL_NUMBER (XEXP (addr, 0)),			\
		   reg_names[REGNO (reg1)]);				\
	  break; }							\
    default:								\
      if (GET_CODE (addr) == CONST_INT					\
	  && INTVAL (addr) < 0x8000					\
	  && INTVAL (addr) >= -0x8000)					\
	fprintf (FILE, "%d", INTVAL (addr));				\
      else								\
        output_addr_const (FILE, addr);					\
    }}

#define ASM_OUTPUT_SOURCE_FILENAME(FILE, FILENAME) \
  do {	fprintf (FILE, "\t; file\t");			\
	output_quoted_string (FILE, FILENAME);		\
	fprintf (FILE, "\n");				\
  } while (0)

#define ASM_OUTPUT_SOURCE_LINE(FILE, LINENO)	\
  fprintf (FILE, "\t; ln\t%d\n",			\
	   (sdb_begin_function_line		\
	    ? last_linenum - sdb_begin_function_line : 1))

/* This macro generates the assembly code for function entry.
   FILE is a stdio stream to output the code to.
   SIZE is an int: how many units of temporary storage to allocate.
   Refer to the array `regs_ever_live' to determine which registers
   to save; `regs_ever_live[I]' is nonzero if register number I
   is ever used in the function.  This macro is responsible for
   knowing which registers should not be saved even if used.  */

/* Note that the order of the bit mask for fmovem is the opposite
   of the order for movem!  */

#undef FUNCTION_PROLOGUE
#define FUNCTION_PROLOGUE(FILE, SIZE)     \
{ register int regno;						\
  register int mask = 0;					\
  extern char call_used_regs[];					\
  int fsize = ((SIZE) + 3) & -4;				\
  /* unos stack probe */					\
  if ( fsize > 30000 ) {					\
    fprintf (FILE, "\tmovel sp,a0\n");				\
    fprintf (FILE, "\taddl $-%d,a0\n", 2048 + fsize);		\
    fprintf (FILE, "\ttstb (a0)\n");				\
  } else {							\
    fprintf (FILE, "\ttstb -%d(sp)\n", 2048 + fsize);		\
  }								\
  if (frame_pointer_needed)					\
    { if (TARGET_68020 || fsize < 0x8000)			\
        fprintf (FILE, "\tlink a6,$%d\n", -fsize);		\
      else							\
	fprintf (FILE, "\tlink a6,$0\n\tsubl $%d,sp\n", fsize); }  \
  else if (fsize)						      \
    {								      \
      /* Adding negative number is faster on the 68040.  */	      \
      if (fsize + 4 < 0x8000)					      \
	{							      \
	  fprintf (FILE, "\tadd.w #%d,sp\n", - (fsize + 4));	      \
	}							      \
      else							      \
	{							      \
	  fprintf (FILE, "\tadd.l #%d,sp\n", - (fsize + 4));          \
	}							      \
    }								      \
  for (regno = 16; regno < 24; regno++)				\
    if (regs_ever_live[regno] && ! call_used_regs[regno])	\
       mask |= 1 << (regno - 16);				\
  if ((mask & 0xff) != 0)					\
    fprintf (FILE, "\tfmovem $0x%x,-(sp)\n", mask & 0xff);       \
  mask = 0;							\
  for (regno = 0; regno < 16; regno++)				\
    if (regs_ever_live[regno] && ! call_used_regs[regno])	\
       mask |= 1 << (15 - regno);				\
  if (frame_pointer_needed)					\
    mask &= ~ (1 << (15-FRAME_POINTER_REGNUM));			\
  if (exact_log2 (mask) >= 0)					\
    fprintf (FILE, "\tmovel %s,-(sp)\n", reg_names[15 - exact_log2 (mask)]);  \
  else if (mask) fprintf (FILE, "\tmovem $0x%x,-(sp)\n", mask); }

/* Must put address in  %a0 , not  %d0 . -- LGM, 7/15/88 */
/* UNOS ?? */
#undef FUNCTION_PROFILER
#define FUNCTION_PROFILER(FILE, LABEL_NO)	\
    fprintf (FILE, "\tmovl &LP%%%d,%%a0\n\tjsr mcount\n", (LABEL_NO))

/* This macro generates the assembly code for function exit,
   on machines that need it.  If FUNCTION_EPILOGUE is not defined
   then individual return instructions are generated for each
   return statement.  Args are same as for FUNCTION_PROLOGUE.

   The function epilogue should not depend on the current stack pointer!
   It should use the frame pointer only.  This is mandatory because
   of alloca; we also take advantage of it to omit stack adjustments
   before returning.  */

#undef FUNCTION_EPILOGUE
#define FUNCTION_EPILOGUE(FILE, SIZE) \
{ register int regno;						\
  register int mask, fmask;					\
  register int nregs;						\
  int offset, foffset, fpoffset;				\
  extern char call_used_regs[];					\
  int fsize = ((SIZE) + 3) & -4;				\
  int big = 0;							\
  nregs = 0;  fmask = 0; fpoffset = 0;				\
  for (regno = 16; regno < 24; regno++)				\
    if (regs_ever_live[regno] && ! call_used_regs[regno])	\
      { nregs++; fmask |= 1 << (23 - regno); }			\
  foffset = fpoffset + nregs * 12;				\
  nregs = 0;  mask = 0;						\
  if (frame_pointer_needed) regs_ever_live[FRAME_POINTER_REGNUM] = 0; \
  for (regno = 0; regno < 16; regno++)				\
    if (regs_ever_live[regno] && ! call_used_regs[regno])	\
      { nregs++; mask |= 1 << regno; }				\
  offset = foffset + nregs * 4;					\
  if (offset + fsize >= 0x8000 					\
      && frame_pointer_needed 					\
      && (mask || fmask || fpoffset)) 				\
    { fprintf (FILE, "\tmovel $%d,a0\n", -fsize);		\
      fsize = 0, big = 1; }					\
  if (exact_log2 (mask) >= 0) {					\
    if (big)							\
      fprintf (FILE, "\tmovel -%d(a6,a0.l),%s\n",		\
	       offset + fsize, reg_names[exact_log2 (mask)]);	\
    else if (! frame_pointer_needed)				\
      fprintf (FILE, "\tmovel (sp)+,%s\n",			\
	       reg_names[exact_log2 (mask)]);			\
    else							\
      fprintf (FILE, "\tmovel -%d(a6),%s\n",			\
	       offset + fsize, reg_names[exact_log2 (mask)]); }	\
  else if (mask) {						\
    if (big)							\
      fprintf (FILE, "\tmovem -%d(a6,a0.l),$0x%x\n",		\
	       offset + fsize, mask);				\
    else if (! frame_pointer_needed)				\
      fprintf (FILE, "\tmovem (sp)+,$0x%x\n", mask);		\
    else							\
      fprintf (FILE, "\tmovem -%d(a6),$0x%x\n",		\
	       offset + fsize, mask); }				\
  if (fmask) {							\
    if (big)							\
      fprintf (FILE, "\tfmovem -%d(a6,a0.l),$0x%x\n",		\
	       foffset + fsize, fmask);				\
    else if (! frame_pointer_needed)				\
      fprintf (FILE, "\tfmovem (sp)+,$0x%x\n", fmask);		\
    else							\
      fprintf (FILE, "\tfmovem -%d(a6),$0x%x\n",		\
	       foffset + fsize, fmask); }			\
  if (fpoffset != 0)						\
    for (regno = 55; regno >= 24; regno--)			\
      if (regs_ever_live[regno] && ! call_used_regs[regno]) {	\
	if (big)						\
	  fprintf(FILE, "\tfpmoved -%d(a6,a0.l), %s\n",	\
		  fpoffset + fsize, reg_names[regno]);		\
	else if (! frame_pointer_needed)			\
	  fprintf(FILE, "\tfpmoved (sp)+, %s\n",			\
		  reg_names[regno]);				\
	else							\
	  fprintf(FILE, "\tfpmoved -%d(a6), %s\n",		\
		  fpoffset + fsize, reg_names[regno]);		\
	fpoffset -= 8;						\
      }								\
  if (frame_pointer_needed)					\
    fprintf (FILE, "\tunlk a6\n");				\
  else if (fsize)                                                     \
    {                                                                 \
      if (fsize + 4 < 0x8000)                                         \
	{                                                             \
	  fprintf (FILE, "\tadd.w #%d,sp\n", fsize + 4);              \
	}                                                             \
      else                                                            \
	{                                                             \
	  fprintf (FILE, "\tadd.l #%d,sp\n", fsize + 4);              \
	}                                                             \
    }                                                                 \
  if (current_function_pops_args)				\
    fprintf (FILE, "\trtd $%d\n", current_function_pops_args);	\
  else fprintf (FILE, "\trts\n"); }