tm-tahoe.h

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       && CONSTANT_ADDRESS_P (XEXP (X, 1))))

/* If x is a non-indexed-address, go to ADDR. */

#define GO_IF_NONINDEXED_ADDRESS(X, ADDR)  \
{ register rtx xfoob = (X);						\
  if (GET_CODE (xfoob) == REG) goto ADDR;				\
  if (INDIRECTABLE_ADDRESS_P (xfoob)) goto ADDR;			\
  xfoob = XEXP (X, 0);							\
  if (GET_CODE (X) == MEM && INDIRECTABLE_ADDRESS_P (xfoob))		\
    goto ADDR;								\
  if ((GET_CODE (X) == PRE_DEC || GET_CODE (X) == POST_INC)		\
      && GET_CODE (xfoob) == REG && REGNO (xfoob) == 14)		\
    goto ADDR; }

/* Is PROD an index term in mode MODE. */

#define INDEX_TERM_P(PROD, MODE)   \
(GET_MODE_SIZE (MODE) == 1						\
 ? (GET_CODE (PROD) == REG && REG_OK_FOR_BASE_P (PROD))			\
 : (GET_CODE (PROD) == MULT						\
    &&									\
    (xfoo0 = XEXP (PROD, 0), xfoo1 = XEXP (PROD, 1),			\
     ((GET_CODE (xfoo0) == CONST_INT					\
       && INTVAL (xfoo0) == GET_MODE_SIZE (MODE)			\
       && GET_CODE (xfoo1) == REG					\
       && REG_OK_FOR_INDEX_P (xfoo1))					\
      ||								\
      (GET_CODE (xfoo1) == CONST_INT					\
       && INTVAL (xfoo1) == GET_MODE_SIZE (MODE)			\
       && GET_CODE (xfoo0) == REG					\
       && REG_OK_FOR_INDEX_P (xfoo0))))))

/* Is the addition to the index a reg? */

#define GO_IF_REG_PLUS_INDEX(X, MODE, ADDR)	\
{ register rtx xfooa;							\
  if (GET_CODE (X) == PLUS)						\
    { if (GET_CODE (XEXP (X, 0)) == REG					\
	  && REG_OK_FOR_BASE_P (XEXP (X, 0))				\
	  && (xfooa = XEXP (X, 1),					\
	      INDEX_TERM_P (xfooa, MODE)))				\
	goto ADDR;							\
      if (GET_CODE (XEXP (X, 1)) == REG					\
	  && REG_OK_FOR_BASE_P (XEXP (X, 1))				\
	  && (xfooa = XEXP (X, 0),					\
	      INDEX_TERM_P (xfooa, MODE)))				\
	goto ADDR; } }

/* Is the rtx X a valid memoy address for operand of mode MODE? */
/* If it is, go to ADDR */

#define GO_IF_LEGITIMATE_ADDRESS(MODE, X, ADDR)  \
{ register rtx xfoo, xfoo0, xfoo1;					\
  GO_IF_NONINDEXED_ADDRESS (X, ADDR);					\
  if (GET_CODE (X) == PLUS)						\
    { xfoo = XEXP (X, 0);						\
      if (INDEX_TERM_P (xfoo, MODE))					\
	{ GO_IF_NONINDEXED_ADDRESS (XEXP (X, 1), ADDR); }		\
      xfoo = XEXP (X, 1);						\
      if (INDEX_TERM_P (xfoo, MODE))					\
	{ GO_IF_NONINDEXED_ADDRESS (XEXP (X, 0), ADDR); }		\
      if (CONSTANT_ADDRESS_P (XEXP (X, 0)))				\
	{ if (GET_CODE (XEXP (X, 1)) == REG				\
	      && REG_OK_FOR_BASE_P (XEXP (X, 1)))			\
	    goto ADDR;							\
	  GO_IF_REG_PLUS_INDEX (XEXP (X, 1), MODE, ADDR); }		\
      if (CONSTANT_ADDRESS_P (XEXP (X, 1)))				\
	{ if (GET_CODE (XEXP (X, 0)) == REG				\
	      && REG_OK_FOR_BASE_P (XEXP (X, 0)))			\
	    goto ADDR;							\
	  GO_IF_REG_PLUS_INDEX (XEXP (X, 0), MODE, ADDR); } } }

/* Register 16 can never be used for index or base */

#ifndef REG_OK_STRICT
#define REG_OK_FOR_INDEX_P(X) (REGNO(X) != 16)
#define REG_OK_FOR_BASE_P(X) (REGNO(X) != 16)
#else
#define REG_OK_FOR_INDEX_P(X) REGNO_OK_FOR_INDEX_P (REGNO (X))
#define REG_OK_FOR_BASE_P(X) REGNO_OK_FOR_BASE_P (REGNO (X))
#endif

/* Addressing is too simple to allow optimizing here */

#define LEGITIMIZE_ADDRESS(X,OLDX,MODE,WIN)  {}

/* Post_inc and pre_dec always adds 4 */

#define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR,LABEL)	\
 { if (GET_CODE(ADDR) == POST_INC || GET_CODE(ADDR) == PRE_DEC)		\
       goto LABEL;							\
   if (GET_CODE (ADDR) == PLUS)						\
     { if (CONSTANT_ADDRESS_P (XEXP (ADDR, 0))				\
	   && GET_CODE (XEXP (ADDR, 1)) == REG);			\
       else if (CONSTANT_ADDRESS_P (XEXP (ADDR, 1))			\
		&& GET_CODE (XEXP (ADDR, 0)) == REG);			\
       else goto LABEL; }}

/* Double's are not legitimate as immediate operands */

#define LEGITIMATE_CONSTANT_P(X) \
  (GET_CODE (X) != CONST_DOUBLE)


/*
 * Miscellaneous Parameters
 */

/* the elements in the case jump table are all words */

#define CASE_VECTOR_MODE HImode

/* each of the table elements in a case are relative to the jump addess */

#define CASE_VECTOR_PC_RELATIVE

/* tahoe case instructions just fall through to the next instruction */
/* if not satisfied. It doesn't support a default action	     */

#define CASE_DROPS_THROUGH

/* the standard answer is given here and work ok */

#define IMPLICIT_FIX_EXPR FIX_ROUND_EXPR

/* in a general div case, it's easiest to use TRUNC_DIV_EXPR */

#define EASY_DIV_EXPR TRUNC_DIV_EXPR

/* the standard seems to be leaving char's as signed so we left it */
/* this way even though we think they should be unsigned!	   */

#define DEFAULT_SIGNED_CHAR 1

/* the most we can move without cutting down speed is 4 bytes */

#define MOVE_MAX 4

/* our int is 32 bits */

#define INT_TYPE_SIZE 32

/* byte access isn't really slower than anything else */

#define SLOW_BYTE_ACCESS 0

/* zero extension is more than one instruction so try to avoid it */

#define SLOW_ZERO_EXTEND

/* any bits higher than the low 4 are ignored in the shift count */
/* so don't bother zero extending or sign extending them         */

#define SHIFT_COUNT_TRUNCATED

/* we don't need to officially convert from one fixed type to another */
/* in order to use it as that type. We can just assume it's the same  */

#define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1

/* pass chars as ints */

#define PROMOTE_PROTOTYPES

/* pointers can be represented by an si mode expression */

#define Pmode SImode

/* function addresses are made by specifying a byte address */

#define FUNCTION_MODE QImode

/* all the costs here were borrowed from the vax version of the */
/* tm file. They're pretty much the same in the tahoe           */

#define CONST_COSTS(RTX,CODE) \
  case CONST_INT:						\
    if (RTX == const0_rtx) return 0;				\
    if ((unsigned) INTVAL (RTX) < 077) return 1;		\
  case CONST:							\
  case LABEL_REF:						\
  case SYMBOL_REF:						\
    return 3;							\
  case CONST_DOUBLE:						\
    return 5;


/*
 * Condition Code Information
 */

/* Condition codes still break in one case that we haven't tracked */
/* down yet, so we have to leave them like this for now.	   */

#define NOTICE_UPDATE_CC(EXP, INSN) \
{ if (GET_CODE(EXP) == SET && GET_CODE(SET_DEST(EXP)) == CC0) {		\
	cc_status.flags = 0;					\
	cc_status.value1 = SET_DEST(EXP);			\
	cc_status.value2 = SET_SRC(EXP);			\
  } else							\
	CC_STATUS_INIT; }


/*
 * Output of Assembler Code
 */

/* start the assembly by turning off APP */

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

/* the instruction that turns on the APP for the gnu assembler */

#define ASM_APP_ON "#APP\n"

/* the instruction that turns off the APP for the gnu assembler */

#define ASM_APP_OFF "#NO_APP\n"

/* what to output before read-only data.  */

#define TEXT_SECTION_ASM_OP ".text"

/* what to output before writable data.  */

#define DATA_SECTION_ASM_OP ".data"

/* this is what we call each of the regs. notice that the FPP reg is   */
/* called "ac". This should never get used due to the way we've set    */
/* up FPP instructions in the md file. But we call it "ac" here to     */
/* fill the list.						       */

#define REGISTER_NAMES \
{"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", "r8", \
 "r9", "r10", "r11", "r12", "fp", "sp", "pc", "ac"}

/* registers are called the same thing in dbx anything else */

#define DBX_REGISTER_NUMBER(REGNO) (REGNO)

/* allow generation of dbx info in the assembly */

#define DBX_DEBUGGING_INFO

/* our dbx doesn't support this */

#define DBX_NO_XREFS

/* we don't want symbols broken up */

#define DBX_CONTIN_LENGTH 0

/* this'll really never be used, but we'll leave it at this */

#define DBX_CONTIN_CHAR '?'

/* labels are the label followed by a colon and a newline */
/* must be a statement, so surround it in a null loop     */

#define ASM_OUTPUT_LABEL(FILE,NAME)	\
  do { assemble_name (FILE, NAME); fputs (":\n", FILE); } while (0)

/* use the .globl directive to make labels global for the linker */

#define ASM_GLOBALIZE_LABEL(FILE,NAME)	\
  do { fputs (".globl ", FILE); assemble_name (FILE, NAME); fputs ("\n", FILE);} while (0)

/* output a label by appending an underscore to it */

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

/* use the standard format for printing internal labels */

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

/* a * is used for label indirection in unix assembly */

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

/* outputing a double is easy cause we only have one kind */

#define ASM_OUTPUT_DOUBLE(FILE,VALUE)  \
{							\
  union { int i[2]; double d;} temp;			\
  temp.d = (VALUE);					\
  if (TARGET_HEX_FLOAT)					\
    fprintf ((FILE), "\t.long 0x%x,0x%x  # %.20e\n",	\
	     temp.i[0], temp.i[1], temp.d);		\
  else							\
    fprintf (FILE, "\t.dfloat 0d%.20e\n", temp.d);	\
}

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

#define ASM_OUTPUT_FLOAT(FILE,VALUE)  \
{							\
  union { int i; float f;} temp;			\
  temp.f = (float) (VALUE);				\
  if (TARGET_HEX_FLOAT)					\
    fprintf ((FILE), "\t.long 0x%x  # %.20e\n",		\
	     temp.i, temp.f);				\
  else							\
    fprintf (FILE, "\t.float 0f%.20e\n", temp.f);	\
}

/* 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 the insn to push a register onto the stack */

#define ASM_OUTPUT_REG_PUSH(FILE,REGNO)	\
  fprintf (FILE, "\tpushl %s\n", reg_names[REGNO])

/* this is the insn to pop a register from the stack */

#define ASM_OUTPUT_REG_POP(FILE,REGNO)	\
  fprintf (FILE, "\tmovl (sp)+,%s\n", reg_names[REGNO])

/* this is required even thought tahoe doesn't support it */
/* cause the C code expects it to be defined		  */

#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.  */

#define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, VALUE, REL)  \
  fprintf (FILE, "\t.word L%d-L%d\n", VALUE, REL)

/* This aligns the assembler output */

#define ASM_OUTPUT_ALIGN(FILE,LOG)  \
  LOG ? fprintf (FILE, "\t.align %d\n", (LOG)) : 0

/* This is how to skip over some space */

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

/* This defines common variables across files */

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

/* This defines a common varible in the local file */

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

/* code to generate a label */

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

/* parenthesis for expressions in the assembly */

#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 operand.  Some difference from the vax code,
   since the tahoe can't support immediate floats and doubles.

   %@ means print the proper alignment operand for aligning after a casesi.
   This depends on the assembler syntax.
   This is 1 for our assembler, since .align is logarithmic.  */

#define PRINT_OPERAND_PUNCT_VALID_P(CODE)				\
  ((CODE) == '@')

#define PRINT_OPERAND(FILE, X, CODE)  \
{ if (CODE == '@')							\
    putc ('1', FILE);							\
  else if (GET_CODE (X) == REG)						\
    fprintf (FILE, "%s", reg_names[REGNO (X)]);				\
  else if (GET_CODE (X) == MEM)						\
    output_address (XEXP (X, 0));					\
  else { putc ('$', FILE); output_addr_const (FILE, X); }}

/* When the operand is an address, call print_operand_address to */
/* do the work from output-tahoe.c.				 */

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