ns32k.h

GUN开源阻止下的编译器GCC

/* Nonzero if access to memory by bytes is slow and undesirable.  */
#define SLOW_BYTE_ACCESS 0

/* Define if shifts truncate the shift count
   which implies one can omit a sign-extension or zero-extension
   of a shift count.  */
/* #define SHIFT_COUNT_TRUNCATED */

/* Value is 1 if truncating an integer of INPREC bits to OUTPREC bits
   is done just by pretending it is already truncated.  */
#define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1

/* We assume that the store-condition-codes instructions store 0 for false
   and some other value for true.  This is the value stored for true.  */

#define STORE_FLAG_VALUE 1

/* Specify the machine mode that pointers have.
   After generation of rtl, the compiler makes no further distinction
   between pointers and any other objects of this machine mode.  */
#define Pmode SImode

/* A function address in a call instruction
   is a byte address (for indexing purposes)
   so give the MEM rtx a byte's mode.  */
#define FUNCTION_MODE QImode

/* Compute the cost of address ADDRESS. */

#define ADDRESS_COST(RTX) calc_address_cost (RTX)

/* Compute the cost of computing a constant rtl expression RTX
   whose rtx-code is CODE.  The body of this macro is a portion
   of a switch statement.  If the code is computed here,
   return it with a return statement.  Otherwise, break from the switch.  */

#define CONST_COSTS(RTX,CODE,OUTER_CODE) \
  case CONST_INT:						\
    if (INTVAL (RTX) <= 7 && INTVAL (RTX) >= -8) return 0;	\
    if (INTVAL (RTX) < 0x2000 && INTVAL (RTX) >= -0x2000)	\
      return 1;							\
  case CONST:							\
  case LABEL_REF:						\
  case SYMBOL_REF:						\
    return 3;							\
  case CONST_DOUBLE:						\
    return 5;

/* Tell final.c how to eliminate redundant test instructions.  */

/* Here we define machine-dependent flags and fields in cc_status
   (see `conditions.h').  */

/* This bit means that what ought to be in the Z bit
   should be tested in the F bit.  */
#define CC_Z_IN_F 04000

/* This bit means that what ought to be in the Z bit
   is complemented in the F bit.  */
#define CC_Z_IN_NOT_F 010000

/* Store in cc_status the expressions
   that the condition codes will describe
   after execution of an instruction whose pattern is EXP.
   Do not alter them if the instruction would not alter the cc's.  */

#define NOTICE_UPDATE_CC(EXP, INSN) \
{ if (GET_CODE (EXP) == SET)					\
    { if (GET_CODE (SET_DEST (EXP)) == CC0)			\
	{ cc_status.flags = 0;					\
	  cc_status.value1 = SET_DEST (EXP);			\
	  cc_status.value2 = SET_SRC (EXP);			\
	}							\
      else if (GET_CODE (SET_SRC (EXP)) == CALL)		\
	{ CC_STATUS_INIT; }					\
      else if (GET_CODE (SET_DEST (EXP)) == REG)		\
	{ if (cc_status.value1					\
	      && reg_overlap_mentioned_p (SET_DEST (EXP), cc_status.value1)) \
	    cc_status.value1 = 0;				\
	  if (cc_status.value2					\
	      && reg_overlap_mentioned_p (SET_DEST (EXP), cc_status.value2)) \
	    cc_status.value2 = 0;				\
	}							\
      else if (GET_CODE (SET_DEST (EXP)) == MEM)		\
	{ CC_STATUS_INIT; }					\
    }								\
  else if (GET_CODE (EXP) == PARALLEL				\
	   && GET_CODE (XVECEXP (EXP, 0, 0)) == SET)		\
    { if (GET_CODE (SET_DEST (XVECEXP (EXP, 0, 0))) == CC0)	\
	{ cc_status.flags = 0;					\
	  cc_status.value1 = SET_DEST (XVECEXP (EXP, 0, 0));	\
	  cc_status.value2 = SET_SRC (XVECEXP (EXP, 0, 0));	\
	}							\
      else if (GET_CODE (SET_DEST (XVECEXP (EXP, 0, 0))) == REG) \
	{ if (cc_status.value1					\
	      && reg_overlap_mentioned_p (SET_DEST (XVECEXP (EXP, 0, 0)), cc_status.value1)) \
	    cc_status.value1 = 0;				\
	  if (cc_status.value2					\
	      && reg_overlap_mentioned_p (SET_DEST (XVECEXP (EXP, 0, 0)), cc_status.value2)) \
	    cc_status.value2 = 0;				\
	}							\
      else if (GET_CODE (SET_DEST (XVECEXP (EXP, 0, 0))) == MEM) \
	{ CC_STATUS_INIT; }					\
    }								\
  else if (GET_CODE (EXP) == CALL)				\
    { /* all bets are off */ CC_STATUS_INIT; }			\
  else { /* nothing happens? CC_STATUS_INIT; */}		\
  if (cc_status.value1 && GET_CODE (cc_status.value1) == REG	\
      && cc_status.value2					\
      && reg_overlap_mentioned_p (cc_status.value1, cc_status.value2))	\
    abort ();			\
}

/* Describe the costs of the following register moves which are discouraged:
   1.) Moves between the Floating point registers and the frame pointer and stack pointer
   2.) Moves between the stack pointer and the frame pointer
   3.) Moves between the floating point and general registers */

#define REGISTER_MOVE_COST(CLASS1, CLASS2)   \
  ((((CLASS1) == FLOAT_REGS && ((CLASS2) == STACK_POINTER_REG || (CLASS2) == FRAME_POINTER_REG))    \
   || ((CLASS2) == FLOAT_REGS && ((CLASS1) == STACK_POINTER_REG || (CLASS1) == FRAME_POINTER_REG))  \
   || ((CLASS1) == STACK_POINTER_REG && (CLASS2) == FRAME_POINTER_REG)                              \
   || ((CLASS2) == STACK_POINTER_REG && (CLASS1) == FRAME_POINTER_REG)                              \
   || ((CLASS1) == FLOAT_REGS && (CLASS2) == GENERAL_REGS)                                          \
   || ((CLASS1) == GENERAL_REGS && (CLASS2) == FLOAT_REGS))                                         \
 ? 4  : 2)

#define OUTPUT_JUMP(NORMAL, NO_OV)  \
{ if (cc_status.flags & CC_NO_OVERFLOW)				\
    return NO_OV;						\
  return NORMAL; }

/* Dividing the output into sections */

/* Output before read-only data.  */

#define TEXT_SECTION_ASM_OP ".text"

/* Output before writable data.  */

#define DATA_SECTION_ASM_OP ".data"

/* Define the output Assembly Language */

/* Output at beginning of assembler file.  */

#define ASM_FILE_START(FILE) fprintf (FILE, "#NO_APP\n");

/* Output to assembler file text saying following lines
   may contain character constants, extra white space, comments, etc.  */

#define ASM_APP_ON "#APP\n"

/* Output to assembler file text saying following lines
   no longer contain unusual constructs.  */

#define ASM_APP_OFF "#NO_APP\n"

/* Output of Data */

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

#define ASM_OUTPUT_DOUBLE(FILE,VALUE)  \
  fprintf (FILE, "\t.double 0d%.20e\n", (VALUE))

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

#define ASM_OUTPUT_FLOAT(FILE,VALUE)  \
  fprintf (FILE, "\t.float 0f%.20e\n", (VALUE))

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

#define ASM_OUTPUT_INT(FILE,VALUE)  \
( fprintf (FILE, "\t.long "),			\
  output_addr_const (FILE, (VALUE)),		\
  fprintf (FILE, "\n"))

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

#define ASM_OUTPUT_SHORT(FILE,VALUE)  \
( fprintf (FILE, "\t.word "),			\
  output_addr_const (FILE, (VALUE)),		\
  fprintf (FILE, "\n"))

#define ASM_OUTPUT_CHAR(FILE,VALUE)  \
( fprintf (FILE, "\t.byte "),			\
  output_addr_const (FILE, (VALUE)),		\
  fprintf (FILE, "\n"))

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

#define ASM_OUTPUT_BYTE(FILE,VALUE)  \
  fprintf (FILE, "\t.byte 0x%x\n", (VALUE))

/* This is how to output an assembler line defining an external/static
   address which is not in tree format (for collect.c).  */

#define ASM_OUTPUT_LABELREF_AS_INT(STREAM, NAME)			\
do {									\
  fprintf (STREAM, "\t.long\t");					\
  ASM_OUTPUT_LABELREF (STREAM, NAME);					\
  fprintf (STREAM, "\n");						\
} while (0)

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

#define ASM_OUTPUT_REG_PUSH(FILE,REGNO)  \
  fprintf (FILE, "\tmovd %s,tos\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.  */

#define ASM_OUTPUT_REG_POP(FILE,REGNO)  \
  fprintf (FILE, "\tmovd tos,%s\n", reg_names[REGNO])

/* How to refer to registers in assembler output.
   This sequence is indexed by compiler's hard-register-number (see above).  */

#define REGISTER_NAMES \
{"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", \
 "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", \
 "fp", "sp"}

/* How to renumber registers for dbx and gdb.
   NS32000 may need more change in the numeration.  */

#define DBX_REGISTER_NUMBER(REGNO) ((REGNO < 8) ? (REGNO)+4 : (REGNO))

/* This is how to output the definition of a user-level label named NAME,
   such as the label on a static function or variable NAME.  */

#ifndef COLLECT
#define ASM_OUTPUT_LABEL(FILE,NAME)	\
  do { assemble_name (FILE, NAME); fputs (":\n", FILE); } while (0)
#else
#define ASM_OUTPUT_LABEL(STREAM,NAME)					\
do {									\
  fprintf (STREAM, "%s:\n", NAME);					\
} while (0)
#endif

/* This is how to output a command to make the user-level label named NAME
   defined for reference from other files.  */

#ifndef COLLECT
#define ASM_GLOBALIZE_LABEL(FILE,NAME)	\
  do { fputs (".globl ", FILE); assemble_name (FILE, NAME); fputs ("\n", FILE);} while (0)
#else
#define ASM_GLOBALIZE_LABEL(STREAM,NAME)				\
do {									\
  fprintf (STREAM, "\t.globl\t%s\n", NAME);				\
} while (0)
#endif

/* This is how to output a reference to a user-level label named NAME.
   `assemble_name' uses this.  */

#define ASM_OUTPUT_LABELREF(FILE,NAME)	\
  fprintf (FILE, "_%s", NAME)

/* This is how to output an internal numbered label where
   PREFIX is the class of label and NUM is the number within the class.  */

#define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM)	\
  fprintf (FILE, "%s%d:\n", PREFIX, NUM)

/* This is how to store into the string LABEL
   the symbol_ref name of an internal numbered label where
   PREFIX is the class of label and NUM is the number within the class.
   This is suitable for output with `assemble_name'.  */

#define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM)	\
  sprintf (LABEL, "*%s%d", PREFIX, NUM)

/* This is how to align the code that follows an unconditional branch.
   Note that 0xa2 is a no-op.  */

#define ASM_OUTPUT_ALIGN_CODE(FILE)	\
  fprintf (FILE, "\t.align 2,0xa2\n")

/* This is how to output an element of a case-vector that is absolute.
   (The ns32k does not use such vectors,
   but we must define this macro anyway.)  */

#define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE)  \
  fprintf (FILE, "\t.long L%d\n", VALUE)

/* This is how to output an element of a case-vector that is relative.  */
/* ** Notice that the second element is LI format! */
#define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, VALUE, REL)  \
  fprintf (FILE, "\t.long L%d-LI%d\n", VALUE, REL)

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

#define ASM_OUTPUT_ALIGN(FILE,LOG)  \
  fprintf (FILE, "\t.align %d\n", (LOG))

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

/* This says how to output an assembler line
   to define a global common symbol.  */

#define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED)  \
( fputs (".comm ", (FILE)),			\
  assemble_name ((FILE), (NAME)),		\
  fprintf ((FILE), ",%u\n", (ROUNDED)))

/* This says how to output an assembler line
   to define a local common symbol.  */

#define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED)  \
( fputs (".lcomm ", (FILE)),			\
  assemble_name ((FILE), (NAME)),		\
  fprintf ((FILE), ",%u\n", (ROUNDED)))

/* 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.  */

#define ASM_FORMAT_PRIVATE_NAME(OUTPUT, NAME, LABELNO)	\
( (OUTPUT) = (char *) alloca (strlen ((NAME)) + 10),	\
  sprintf ((OUTPUT), "%s.%d", (NAME), (LABELNO)))

/* Define the parentheses used to group arithmetic operations
   in assembler code.  */

#define ASM_OPEN_PAREN "("
#define ASM_CLOSE_PAREN ")"

/* Define results of standard character escape sequences.  */
#define TARGET_BELL 007
#define TARGET_BS 010
#define TARGET_TAB 011
#define TARGET_NEWLINE 012
#define TARGET_VT 013
#define TARGET_FF 014
#define TARGET_CR 015

/* Print an instruction operand X on file FILE.
   CODE is the code from the %-spec that requested printing this operand;
   if `%z3' was used to print operand 3, then CODE is 'z'. */

/* %$ means print the prefix for an immediate operand.  */

#define PRINT_OPERAND_PUNCT_VALID_P(CODE)				\
  ((CODE) == '$' || (CODE) == '?')

#define PRINT_OPERAND(FILE, X, CODE)       print_operand(FILE, X, CODE)

/* Print a memory operand whose address is X, on file FILE.  */

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

/* Define functions in ns32k.c and used in insn-output.c.  */

extern char *output_move_double ();
extern char *output_shift_insn ();
extern char *output_move_dconst ();

/*
Local variables:
version-control: t
End:
*/