iq2000.h

Mac OS X 10.4.9 for x86 Source Code gcc 实现源代码

#define CAN_ELIMINATE(FROM, TO)						\
  (((FROM) == RETURN_ADDRESS_POINTER_REGNUM && (! leaf_function_p ()	\
   || (TO == GP_REG_FIRST + 31 && leaf_function_p)))   			\
  || ((FROM) != RETURN_ADDRESS_POINTER_REGNUM				\
   && ((TO) == HARD_FRAME_POINTER_REGNUM 				\
   || ((TO) == STACK_POINTER_REGNUM && ! frame_pointer_needed))))

#define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET)			 \
        (OFFSET) = iq2000_initial_elimination_offset ((FROM), (TO))

/* Passing Function Arguments on the Stack.  */

/* #define PUSH_ROUNDING(BYTES) 0 */

#define ACCUMULATE_OUTGOING_ARGS 1

#define REG_PARM_STACK_SPACE(FNDECL) 0

#define OUTGOING_REG_PARM_STACK_SPACE

#define RETURN_POPS_ARGS(FUNDECL,FUNTYPE,SIZE) 0


/* Function Arguments in Registers.  */

#define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) \
  function_arg (& CUM, MODE, TYPE, NAMED)

#define MAX_ARGS_IN_REGISTERS 8

typedef struct iq2000_args
{
  int gp_reg_found;		/* Whether a gp register was found yet.  */
  unsigned int arg_number;	/* Argument number.  */
  unsigned int arg_words;	/* # total words the arguments take.  */
  unsigned int fp_arg_words;	/* # words for FP args (IQ2000_EABI only).  */
  int last_arg_fp;		/* Nonzero if last arg was FP (EABI only).  */
  int fp_code;			/* Mode of FP arguments.  */
  unsigned int num_adjusts;	/* Number of adjustments made.  */
				/* Adjustments made to args pass in regs.  */
  struct rtx_def * adjust[MAX_ARGS_IN_REGISTERS * 2];
} CUMULATIVE_ARGS;

/* Initialize a variable CUM of type CUMULATIVE_ARGS
   for a call to a function whose data type is FNTYPE.
   For a library call, FNTYPE is 0.  */
#define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, INDIRECT, N_NAMED_ARGS) \
  init_cumulative_args (& CUM, FNTYPE, LIBNAME)				\

#define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED)			\
  function_arg_advance (& CUM, MODE, TYPE, NAMED)

#define FUNCTION_ARG_PADDING(MODE, TYPE)				\
  (! BYTES_BIG_ENDIAN							\
   ? upward								\
   : (((MODE) == BLKmode						\
       ? ((TYPE) && TREE_CODE (TYPE_SIZE (TYPE)) == INTEGER_CST		\
	  && int_size_in_bytes (TYPE) < (PARM_BOUNDARY / BITS_PER_UNIT))\
       : (GET_MODE_BITSIZE (MODE) < PARM_BOUNDARY			\
	  && (GET_MODE_CLASS (MODE) == MODE_INT)))			\
      ? downward : upward))

#define FUNCTION_ARG_BOUNDARY(MODE, TYPE)				\
  (((TYPE) != 0)							\
	? ((TYPE_ALIGN(TYPE) <= PARM_BOUNDARY)				\
		? PARM_BOUNDARY						\
		: TYPE_ALIGN(TYPE))					\
	: ((GET_MODE_ALIGNMENT(MODE) <= PARM_BOUNDARY)			\
		? PARM_BOUNDARY						\
		: GET_MODE_ALIGNMENT(MODE)))

#define FUNCTION_ARG_REGNO_P(N)						\
  (((N) >= GP_ARG_FIRST && (N) <= GP_ARG_LAST))			


/* How Scalar Function Values are Returned.  */

#define FUNCTION_VALUE(VALTYPE, FUNC)	iq2000_function_value (VALTYPE, FUNC)

#define LIBCALL_VALUE(MODE)				\
  gen_rtx_REG (((GET_MODE_CLASS (MODE) != MODE_INT	\
		 || GET_MODE_SIZE (MODE) >= 4)		\
		? (MODE)				\
		: SImode),				\
	       GP_RETURN)

/* On the IQ2000, R2 and R3 are the only register thus used.  */

#define FUNCTION_VALUE_REGNO_P(N) ((N) == GP_RETURN)


/* How Large Values are Returned.  */

#define DEFAULT_PCC_STRUCT_RETURN 0

/* Function Entry and Exit.  */

#define EXIT_IGNORE_STACK 1


/* Generating Code for Profiling.  */

#define FUNCTION_PROFILER(FILE, LABELNO)				\
{									\
  fprintf (FILE, "\t.set\tnoreorder\n");				\
  fprintf (FILE, "\t.set\tnoat\n");					\
  fprintf (FILE, "\tmove\t%s,%s\t\t# save current return address\n",	\
	   reg_names[GP_REG_FIRST + 1], reg_names[GP_REG_FIRST + 31]);	\
  fprintf (FILE, "\tjal\t_mcount\n");					\
  fprintf (FILE,							\
	   "\t%s\t%s,%s,%d\t\t# _mcount pops 2 words from  stack\n",	\
	   "subu",							\
	   reg_names[STACK_POINTER_REGNUM],				\
	   reg_names[STACK_POINTER_REGNUM],				\
	   Pmode == DImode ? 16 : 8);					\
  fprintf (FILE, "\t.set\treorder\n");					\
  fprintf (FILE, "\t.set\tat\n");					\
}


/* Implementing the Varargs Macros.  */

#define EXPAND_BUILTIN_VA_START(valist, nextarg) \
  iq2000_va_start (valist, nextarg)


/* Trampolines for Nested Functions.  */

/* A C statement to output, on the stream FILE, assembler code for a
   block of data that contains the constant parts of a trampoline.
   This code should not include a label--the label is taken care of
   automatically.  */

#define TRAMPOLINE_TEMPLATE(STREAM)					 \
{									 \
  fprintf (STREAM, "\t.word\t0x03e00821\t\t# move   $1,$31\n");		\
  fprintf (STREAM, "\t.word\t0x04110001\t\t# bgezal $0,.+8\n");		\
  fprintf (STREAM, "\t.word\t0x00000000\t\t# nop\n");			\
  if (Pmode == DImode)							\
    {									\
      fprintf (STREAM, "\t.word\t0xdfe30014\t\t# ld     $3,20($31)\n");	\
      fprintf (STREAM, "\t.word\t0xdfe2001c\t\t# ld     $2,28($31)\n");	\
    }									\
  else									\
    {									\
      fprintf (STREAM, "\t.word\t0x8fe30014\t\t# lw     $3,20($31)\n");	\
      fprintf (STREAM, "\t.word\t0x8fe20018\t\t# lw     $2,24($31)\n");	\
    }									\
  fprintf (STREAM, "\t.word\t0x0060c821\t\t# move   $25,$3 (abicalls)\n"); \
  fprintf (STREAM, "\t.word\t0x00600008\t\t# jr     $3\n");		\
  fprintf (STREAM, "\t.word\t0x0020f821\t\t# move   $31,$1\n");		\
  fprintf (STREAM, "\t.word\t0x00000000\t\t# <function address>\n"); \
  fprintf (STREAM, "\t.word\t0x00000000\t\t# <static chain value>\n"); \
}

#define TRAMPOLINE_SIZE (40)

#define TRAMPOLINE_ALIGNMENT 32

#define INITIALIZE_TRAMPOLINE(ADDR, FUNC, CHAIN)			    \
{									    \
  rtx addr = ADDR;							    \
    emit_move_insn (gen_rtx_MEM (SImode, plus_constant (addr, 32)), FUNC); \
    emit_move_insn (gen_rtx_MEM (SImode, plus_constant (addr, 36)), CHAIN);\
}


/* Addressing Modes.  */

#define CONSTANT_ADDRESS_P(X)						\
  (   (GET_CODE (X) == LABEL_REF || GET_CODE (X) == SYMBOL_REF		\
    || GET_CODE (X) == CONST_INT || GET_CODE (X) == HIGH		\
    || (GET_CODE (X) == CONST)))

#define MAX_REGS_PER_ADDRESS 1

#ifdef REG_OK_STRICT
#define GO_IF_LEGITIMATE_ADDRESS(MODE, X, ADDR)		\
  {							\
    if (iq2000_legitimate_address_p (MODE, X, 1))	\
      goto ADDR;					\
  }
#else
#define GO_IF_LEGITIMATE_ADDRESS(MODE, X, ADDR)		\
  {							\
    if (iq2000_legitimate_address_p (MODE, X, 0))	\
      goto ADDR;					\
  }
#endif

#define REG_OK_FOR_INDEX_P(X) 0


/* For the IQ2000, transform:

	memory(X + <large int>)
   into:
	Y = <large int> & ~0x7fff;
	Z = X + Y
	memory (Z + (<large int> & 0x7fff));
*/

#define LEGITIMIZE_ADDRESS(X,OLDX,MODE,WIN)				\
{									\
  rtx xinsn = (X);							\
									\
  if (TARGET_DEBUG_B_MODE)						\
    {									\
      GO_PRINTF ("\n========== LEGITIMIZE_ADDRESS\n");			\
      GO_DEBUG_RTX (xinsn);						\
    }									\
									\
  if (iq2000_check_split (X, MODE))		\
    {									\
      X = gen_rtx_LO_SUM (Pmode,					\
			  copy_to_mode_reg (Pmode,			\
					    gen_rtx_HIGH (Pmode, X)),	\
			  X);						\
      goto WIN;								\
    }									\
									\
  if (GET_CODE (xinsn) == PLUS)						\
    {									\
      rtx xplus0 = XEXP (xinsn, 0);					\
      rtx xplus1 = XEXP (xinsn, 1);					\
      enum rtx_code code0 = GET_CODE (xplus0);				\
      enum rtx_code code1 = GET_CODE (xplus1);				\
									\
      if (code0 != REG && code1 == REG)					\
	{								\
	  xplus0 = XEXP (xinsn, 1);					\
	  xplus1 = XEXP (xinsn, 0);					\
	  code0 = GET_CODE (xplus0);					\
	  code1 = GET_CODE (xplus1);					\
	}								\
									\
      if (code0 == REG && REG_MODE_OK_FOR_BASE_P (xplus0, MODE)		\
	  && code1 == CONST_INT && !SMALL_INT (xplus1))			\
	{								\
	  rtx int_reg = gen_reg_rtx (Pmode);				\
	  rtx ptr_reg = gen_reg_rtx (Pmode);				\
									\
	  emit_move_insn (int_reg,					\
			  GEN_INT (INTVAL (xplus1) & ~ 0x7fff));	\
									\
	  emit_insn (gen_rtx_SET (VOIDmode,				\
				  ptr_reg,				\
				  gen_rtx_PLUS (Pmode, xplus0, int_reg))); \
									\
	  X = plus_constant (ptr_reg, INTVAL (xplus1) & 0x7fff);	\
	  goto WIN;							\
	}								\
    }									\
									\
  if (TARGET_DEBUG_B_MODE)						\
    GO_PRINTF ("LEGITIMIZE_ADDRESS could not fix.\n");			\
}

#define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR,LABEL) {}

#define LEGITIMATE_CONSTANT_P(X) (1)


/* Describing Relative Costs of Operations.  */

#define REGISTER_MOVE_COST(MODE, FROM, TO)	2

#define MEMORY_MOVE_COST(MODE,CLASS,TO_P)	\
  (TO_P ? 2 : 16)

#define BRANCH_COST 2

#define SLOW_BYTE_ACCESS 1

#define NO_FUNCTION_CSE 1

#define ADJUST_COST(INSN,LINK,DEP_INSN,COST)				\
  if (REG_NOTE_KIND (LINK) != 0)					\
    (COST) = 0; /* Anti or output dependence.  */


/* Dividing the output into sections.  */

#define TEXT_SECTION_ASM_OP	"\t.text"	/* Instructions.  */

#define DATA_SECTION_ASM_OP	"\t.data"	/* Large data.  */


/* The Overall Framework of an Assembler File.  */

#define ASM_COMMENT_START " #"

#define ASM_APP_ON "#APP\n"

#define ASM_APP_OFF "#NO_APP\n"


/* Output and Generation of Labels.  */

#undef ASM_GENERATE_INTERNAL_LABEL
#define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM)			\
  sprintf ((LABEL), "*%s%s%ld", (LOCAL_LABEL_PREFIX), (PREFIX), (long) (NUM))

#define GLOBAL_ASM_OP "\t.globl\t"


/* Output of Assembler Instructions.  */

#define REGISTER_NAMES							\
{									\
 "%0",   "%1",   "%2",   "%3",   "%4",   "%5",   "%6",   "%7",		\
 "%8",   "%9",   "%10",  "%11",  "%12",  "%13",  "%14",  "%15",		\
 "%16",  "%17",  "%18",  "%19",  "%20",  "%21",  "%22",  "%23",		\
 "%24",  "%25",  "%26",  "%27",  "%28",  "%29",  "%30",  "%31",  "%rap"	\
};

#define ADDITIONAL_REGISTER_NAMES					\
{									\
  { "%0",	 0 + GP_REG_FIRST },					\
  { "%1",	 1 + GP_REG_FIRST },					\
  { "%2",	 2 + GP_REG_FIRST },					\
  { "%3",	 3 + GP_REG_FIRST },					\
  { "%4",	 4 + GP_REG_FIRST },					\
  { "%5",	 5 + GP_REG_FIRST },					\
  { "%6",	 6 + GP_REG_FIRST },					\
  { "%7",	 7 + GP_REG_FIRST },					\
  { "%8",	 8 + GP_REG_FIRST },					\
  { "%9",	 9 + GP_REG_FIRST },					\
  { "%10",	10 + GP_REG_FIRST },					\
  { "%11",	11 + GP_REG_FIRST },					\
  { "%12",	12 + GP_REG_FIRST },					\
  { "%13",	13 + GP_REG_FIRST },					\
  { "%14",	14 + GP_REG_FIRST },					\
  { "%15",	15 + GP_REG_FIRST },					\
  { "%16",	16 + GP_REG_FIRST },					\
  { "%17",	17 + GP_REG_FIRST },					\
  { "%18",	18 + GP_REG_FIRST },					\
  { "%19",	19 + GP_REG_FIRST },					\
  { "%20",	20 + GP_REG_FIRST },					\
  { "%21",	21 + GP_REG_FIRST },					\
  { "%22",	22 + GP_REG_FIRST },					\
  { "%23",	23 + GP_REG_FIRST },					\
  { "%24",	24 + GP_REG_FIRST },					\
  { "%25",	25 + GP_REG_FIRST },					\
  { "%26",	26 + GP_REG_FIRST },					\
  { "%27",	27 + GP_REG_FIRST },					\
  { "%28",	28 + GP_REG_FIRST },					\
  { "%29",	29 + GP_REG_FIRST },					\
  { "%30",	27 + GP_REG_FIRST },					\
  { "%31",	31 + GP_REG_FIRST },					\
  { "%rap",	32 + GP_REG_FIRST },					\
}

/* Check if the current insn needs a nop in front of it
   because of load delays, and also update the delay slot statistics.  */

#define FINAL_PRESCAN_INSN(INSN, OPVEC, NOPERANDS)			\
  final_prescan_insn (INSN, OPVEC, NOPERANDS)

/* See iq2000.c for the IQ2000 specific codes.  */
#define PRINT_OPERAND(FILE, X, CODE) print_operand (FILE, X, CODE)

#define PRINT_OPERAND_PUNCT_VALID_P(CODE) iq2000_print_operand_punct[CODE]

#define PRINT_OPERAND_ADDRESS(FILE, ADDR) print_operand_address (FILE, ADDR)

#define DBR_OUTPUT_SEQEND(STREAM)					\
do									\
  {									\
    fputs ("\n", STREAM);						\
  }									\
while (0)

#define LOCAL_LABEL_PREFIX	"$"

#define USER_LABEL_PREFIX	""


/* Output of dispatch tables.  */

#define ASM_OUTPUT_ADDR_DIFF_ELT(STREAM, BODY, VALUE, REL)		\
  do									\
    {									\
      fprintf (STREAM, "\t%s\t%sL%d\n",					\
	       Pmode == DImode ? ".dword" : ".word",			\
	       LOCAL_LABEL_PREFIX, VALUE);				\
    }									\
  while (0)

#define ASM_OUTPUT_ADDR_VEC_ELT(STREAM, VALUE)				\
  fprintf (STREAM, "\t%s\t%sL%d\n",					\
	   Pmode == DImode ? ".dword" : ".word",			\
	   LOCAL_LABEL_PREFIX,						\
	   VALUE)


/* Assembler Commands for Alignment.  */

#undef ASM_OUTPUT_SKIP
#define ASM_OUTPUT_SKIP(STREAM,SIZE)					\
  fprintf (STREAM, "\t.space\t%u\n", (SIZE))

#define ASM_OUTPUT_ALIGN(STREAM,LOG)					\
  if ((LOG) != 0)                       				\
    fprintf (STREAM, "\t.balign %d\n", 1<<(LOG))


/* Macros Affecting all Debug Formats.  */

#define DEBUGGER_AUTO_OFFSET(X)  \