[deliverable/binutils-gdb.git] / gdb / tm-convex.h

/* Definitions to make GDB run on Convex Unix (4bsd)
   Copyright 1989, 1991, 1993 Free Software Foundation, Inc.

This file is part of GDB.

This program 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 of the License, or
(at your option) any later version.

This program 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 this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */

#define TARGET_BYTE_ORDER BIG_ENDIAN

/* There is come problem with the debugging symbols generated by the
   compiler such that the debugging symbol for the first line of a
   function overlap with the function prologue.  */
#define PROLOGUE_FIRSTLINE_OVERLAP

/* When convex pcc says CHAR or SHORT, it provides the correct address.  */

#define BELIEVE_PCC_PROMOTION 1

/* Symbol types to ignore.  */
/* 0xc4 is N_MONPT.  Use the numeric value for the benefit of people
   with (rather) old OS's.  */
#define IGNORE_SYMBOL(TYPE) \
    (((TYPE) & ~N_EXT) == N_TBSS       \
     || ((TYPE) & ~N_EXT) == N_TDATA   \
     || ((TYPE) & ~N_EXT) == 0xc4)

/* Offset from address of function to start of its code.
   Zero on most machines.  */

#define FUNCTION_START_OFFSET 0

/* Advance PC across any function entry prologue instructions
   to reach some "real" code.
   Convex prolog is:
       [sub.w #-,sp]		in one of 3 possible sizes
       [mov psw,-		fc/vc main program prolog
        and #-,-		  (skip it because the "mov psw" saves the
	mov -,psw]		   T bit, so continue gets a surprise trap)
       [and #-,sp]		fc/vc O2 main program prolog
       [ld.- -(ap),-]		pcc/gcc register arg loads
*/

#define SKIP_PROLOGUE(pc)  \
{ int op, ix;								\
  op = read_memory_integer (pc, 2);					\
  if ((op & 0xffc7) == 0x5ac0) pc += 2;					\
  else if (op == 0x1580) pc += 4;					\
  else if (op == 0x15c0) pc += 6;					\
  if ((read_memory_integer (pc, 2) & 0xfff8) == 0x7c40			\
      && (read_memory_integer (pc + 2, 2) & 0xfff8) == 0x1240		\
      && (read_memory_integer (pc + 8, 2) & 0xfff8) == 0x7c48)		\
    pc += 10;								\
  if (read_memory_integer (pc, 2) == 0x1240) pc += 6;			\
  for (;;) {								\
    op = read_memory_integer (pc, 2);					\
    ix = (op >> 3) & 7;							\
    if (ix != 6) break;							\
    if ((op & 0xfcc0) == 0x3000) pc += 4;				\
    else if ((op & 0xfcc0) == 0x3040) pc += 6;				\
    else if ((op & 0xfcc0) == 0x2800) pc += 4;				\
    else if ((op & 0xfcc0) == 0x2840) pc += 6;				\
    else break;}}

/* Immediately after a function call, return the saved pc.
   (ignore frame and return *$sp so we can handle both calls and callq) */

#define SAVED_PC_AFTER_CALL(frame) \
    read_memory_integer (read_register (SP_REGNUM), 4)

/* Address of end of stack space.
   This is ((USRSTACK + 0xfff) & -0x1000)) from <convex/vmparam.h> but
   that expression depends on the kernel version; instead, fetch a
   page-zero pointer and get it from that.  This will be invalid if
   they ever change the way bkpt signals are delivered.  */

#define STACK_END_ADDR (0xfffff000 & *(unsigned *) 0x80000050)

/* User-mode traps push an extended rtn block,
   then fault with one of the following PCs */

#define is_trace_pc(pc)  ((unsigned) ((pc) - (*(int *) 0x80000040)) <= 4)
#define is_arith_pc(pc)  ((unsigned) ((pc) - (*(int *) 0x80000044)) <= 4)
#define is_break_pc(pc)  ((unsigned) ((pc) - (*(int *) 0x80000050)) <= 4)

/* We need to manipulate trap bits in the psw */

#define PSW_TRAP_FLAGS	0x69670000
#define PSW_T_BIT	0x08000000
#define PSW_S_BIT	0x01000000

/* Stack grows downward.  */

#define INNER_THAN <

/* Sequence of bytes for breakpoint instruction. (bkpt)  */

#define BREAKPOINT {0x7d,0x50}

/* Amount PC must be decremented by after a breakpoint.
   This is often the number of bytes in BREAKPOINT but not always.
   (The break PC needs to be decremented by 2, but we do it when the
   break frame is recognized and popped.  That way gdb can tell breaks
   from trace traps with certainty.) */

#define DECR_PC_AFTER_BREAK 0

/* Nonzero if instruction at PC is a return instruction. (rtn or rtnq) */

#define ABOUT_TO_RETURN(pc) \
    ((read_memory_integer (pc, 2) & 0xffe0) == 0x7c80)

/* Return 1 if P points to an invalid floating point value. */

#define INVALID_FLOAT(p,len)   0

/* Say how long (ordinary) registers are.  */

#define REGISTER_TYPE long long

/* Number of machine registers */

#define NUM_REGS 26

/* Initializer for an array of names of registers.
   There should be NUM_REGS strings in this initializer.  */

#define REGISTER_NAMES {"pc","psw","fp","ap","a5","a4","a3","a2","a1","sp",\
			"s7","s6","s5","s4","s3","s2","s1","s0",\
			"S7","S6","S5","S4","S3","S2","S1","S0"}

/* Register numbers of various important registers.
   Note that some of these values are "real" register numbers,
   and correspond to the general registers of the machine,
   and some are "phony" register numbers which are too large
   to be actual register numbers as far as the user is concerned
   but do serve to get the desired values when passed to read_register.  */

#define S0_REGNUM 25		/* the real S regs */
#define S7_REGNUM 18
#define s0_REGNUM 17		/* low-order halves of S regs */
#define s7_REGNUM 10
#define SP_REGNUM 9 		/* A regs */
#define A1_REGNUM 8
#define A5_REGNUM 4
#define AP_REGNUM 3
#define FP_REGNUM 2		/* Contains address of executing stack frame */
#define PS_REGNUM 1		/* Contains processor status */
#define PC_REGNUM 0		/* Contains program counter */

/* convert dbx stab register number (from `r' declaration) to a gdb REGNUM */

#define STAB_REG_TO_REGNUM(value) \
      ((value) < 8 ? S0_REGNUM - (value) : SP_REGNUM - ((value) - 8))

/* Vector register numbers, not handled as ordinary regs.
   They are treated as convenience variables whose values are read
   from the inferior when needed.  */

#define V0_REGNUM 0
#define V7_REGNUM 7
#define VM_REGNUM 8
#define VS_REGNUM 9
#define VL_REGNUM 10

/* Total amount of space needed to store our copies of the machine's
   register state, the array `registers'.  */
#define REGISTER_BYTES (4*10 + 8*8)

/* Index within `registers' of the first byte of the space for
   register N.
   NB: must match structure of struct syscall_context for correct operation */

#define REGISTER_BYTE(N) ((N) < s7_REGNUM ? 4*(N) : \
			  (N) < S7_REGNUM ? 44 + 8 * ((N)-s7_REGNUM) : \
			                    40 + 8 * ((N)-S7_REGNUM))

/* Number of bytes of storage in the actual machine representation
   for register N. */

#define REGISTER_RAW_SIZE(N) ((N) < S7_REGNUM ? 4 : 8)

/* Number of bytes of storage in the program's representation
   for register N.   */

#define REGISTER_VIRTUAL_SIZE(N) REGISTER_RAW_SIZE(N)

/* Largest value REGISTER_RAW_SIZE can have.  */

#define MAX_REGISTER_RAW_SIZE 8

/* Largest value REGISTER_VIRTUAL_SIZE can have.  */

#define MAX_REGISTER_VIRTUAL_SIZE 8

/* Nonzero if register N requires conversion
   from raw format to virtual format.  */

#define REGISTER_CONVERTIBLE(N) 0

/* Convert data from raw format for register REGNUM
   to virtual format for register REGNUM.  */

#define REGISTER_CONVERT_TO_VIRTUAL(REGNUM,FROM,TO)	\
   bcopy ((FROM), (TO), REGISTER_RAW_SIZE (REGNUM));

/* Convert data from virtual format for register REGNUM
   to raw format for register REGNUM.  */

#define REGISTER_CONVERT_TO_RAW(REGNUM,FROM,TO)	\
  bcopy ((FROM), (TO), REGISTER_RAW_SIZE (REGNUM));

/* Return the GDB type object for the "standard" data type
   of data in register N.  */

#define REGISTER_VIRTUAL_TYPE(N) \
   ((N) < S7_REGNUM ? builtin_type_int : builtin_type_long_long)

/* Store the address of the place in which to copy the structure the
   subroutine will return.  This is called from call_function. */

#define STORE_STRUCT_RETURN(ADDR, SP) \
  { write_register (A1_REGNUM, (ADDR)); }

/* Extract from an array REGBUF containing the (raw) register state
   a function return value of type TYPE, and copy that, in virtual format,
   into VALBUF.  */

#define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
  bcopy (&((char *) REGBUF) [REGISTER_BYTE (S0_REGNUM) + \
			     8 - TYPE_LENGTH (TYPE)],\
	 VALBUF, TYPE_LENGTH (TYPE))

/* Write into appropriate registers a function return value
   of type TYPE, given in virtual format.  */

#define STORE_RETURN_VALUE(TYPE,VALBUF) \
    write_register_bytes (REGISTER_BYTE (S0_REGNUM), VALBUF, 8)

/* Extract from an array REGBUF containing the (raw) register state
   the address in which a function should return its structure value,
   as a CORE_ADDR (or an expression that can be used as one).  */

#define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) \
    (*(int *) & ((char *) REGBUF) [REGISTER_BYTE (s0_REGNUM)])

/* Define trapped internal variable hooks to read and write
   vector and communication registers.  */

#define IS_TRAPPED_INTERNALVAR is_trapped_internalvar
#define VALUE_OF_TRAPPED_INTERNALVAR value_of_trapped_internalvar
#define SET_TRAPPED_INTERNALVAR set_trapped_internalvar

extern struct value *value_of_trapped_internalvar ();

/* Hooks to read data from soff exec and core files,
   and to describe the files.  */

#define XFER_CORE_FILE
#define FILES_INFO_HOOK print_maps

/* Hook to call to print a typeless integer value, normally printed in decimal.
   For convex, use hex instead if the number looks like an address.  */

#define PRINT_TYPELESS_INTEGER decout

/* For the native compiler, variables for a particular lexical context
   are listed after the beginning LBRAC instead of before in the
   executables list of symbols.  Using "gcc_compiled." to distinguish
   between GCC and native compiler doesn't work on Convex because the
   linker sorts the symbols to put "gcc_compiled." in the wrong place.
   desc is nonzero for native, zero for gcc.   */
#define VARIABLES_INSIDE_BLOCK(desc, gcc_p) (desc != 0)

/* Pcc occaisionally puts an SO where there should be an SOL.   */
#define PCC_SOL_BROKEN
\f
/* Describe the pointer in each stack frame to the previous stack frame
   (its caller).  */

/* FRAME_CHAIN takes a frame_info with a frame's nominal address in fi->frame,
   and produces the frame's chain-pointer. */

/* (caller fp is saved at 8(fp)) */

#define FRAME_CHAIN(fi)   (read_memory_integer ((fi)->frame + 8, 4))

/* Define other aspects of the stack frame.  */

/* We need the boundaries of the text in the exec file, as a kludge,
   for FRAMELESS_FUNCTION_INVOCATION and CALL_DUMMY_LOCATION. */

#define	NEED_TEXT_START_END

/* A macro that tells us whether the function invocation represented
   by FI does not have a frame on the stack associated with it.  If it
   does not, FRAMELESS is set to 1, else 0.
   On convex, check at the return address for `callq' -- if so, frameless,
   otherwise, not.  */

#define FRAMELESS_FUNCTION_INVOCATION(FI, FRAMELESS) \
{ 									\
  extern CORE_ADDR text_start, text_end;				\
  CORE_ADDR call_addr = SAVED_PC_AFTER_CALL (FI);			\
  (FRAMELESS) = (call_addr >= text_start && call_addr < text_end	\
		 && read_memory_integer (call_addr - 6, 1) == 0x22);	\
}

#define FRAME_SAVED_PC(fi) (read_memory_integer ((fi)->frame, 4))

#define FRAME_ARGS_ADDRESS(fi) (read_memory_integer ((fi)->frame + 12, 4))

#define FRAME_LOCALS_ADDRESS(fi) (fi)->frame

/* Return number of args passed to a frame.
   Can return -1, meaning no way to tell.  */

#define FRAME_NUM_ARGS(numargs, fi)  \
{ numargs = read_memory_integer (FRAME_ARGS_ADDRESS (fi) - 4, 4); \
  if (numargs < 0 || numargs >= 256) numargs = -1;}

/* Return number of bytes at start of arglist that are not really args.  */

#define FRAME_ARGS_SKIP 0

/* Put here the code to store, into a struct frame_saved_regs,
   the addresses of the saved registers of frame described by FRAME_INFO.
   This includes special registers such as pc and fp saved in special
   ways in the stack frame.  sp is even more special:
   the address we return for it IS the sp for the next frame.  */

/* Normal (short) frames save only PC, FP, (callee's) AP.  To reasonably
   handle gcc and pcc register variables, scan the code following the
   call for the instructions the compiler inserts to reload register
   variables from stack slots and record the stack slots as the saved
   locations of those registers.  This will occasionally identify some
   random load as a saved register; this is harmless.  vc does not
   declare its register allocation actions in the stabs.  */

#define FRAME_FIND_SAVED_REGS(frame_info, frame_saved_regs)		\
{ register int regnum;							\
  register int frame_length =	/* 3 short, 2 long, 1 extended, 0 context */\
      (read_memory_integer ((frame_info)->frame + 4, 4) >> 25) & 3;	\
  register CORE_ADDR frame_fp =						\
      read_memory_integer ((frame_info)->frame + 8, 4);			\
  register CORE_ADDR next_addr;						\
  bzero (&frame_saved_regs, sizeof frame_saved_regs);			\
  (frame_saved_regs).regs[PC_REGNUM] = (frame_info)->frame + 0;		\
  (frame_saved_regs).regs[PS_REGNUM] = (frame_info)->frame + 4;		\
  (frame_saved_regs).regs[FP_REGNUM] = (frame_info)->frame + 8;		\
  (frame_saved_regs).regs[AP_REGNUM] = frame_fp + 12;			\
  next_addr = (frame_info)->frame + 12;					\
  if (frame_length < 3)							\
    for (regnum = A5_REGNUM; regnum < SP_REGNUM; ++regnum)		\
      (frame_saved_regs).regs[regnum] = (next_addr += 4);		\
  if (frame_length < 2)							\
    (frame_saved_regs).regs[SP_REGNUM] = (next_addr += 4);		\
  next_addr -= 4;							\
  if (frame_length < 3)							\
    for (regnum = S7_REGNUM; regnum < S0_REGNUM; ++regnum)		\
      (frame_saved_regs).regs[regnum] = (next_addr += 8);		\
  if (frame_length < 2)							\
    (frame_saved_regs).regs[S0_REGNUM] = (next_addr += 8);		\
  else									\
    (frame_saved_regs).regs[SP_REGNUM] = next_addr + 8;			\
  if (frame_length == 3) {						\
    CORE_ADDR pc = read_memory_integer ((frame_info)->frame, 4);	\
    int op, ix, disp;							\
    op = read_memory_integer (pc, 2);					\
    if ((op & 0xffc7) == 0x1480) pc += 4; 	/* add.w #-,sp */	\
    else if ((op & 0xffc7) == 0x58c0) pc += 2;	/* add.w #-,sp */	\
    op = read_memory_integer (pc, 2);					\
    if ((op & 0xffc7) == 0x2a06) pc += 4;	/* ld.w -,ap */		\
    for (;;) {								\
      op = read_memory_integer (pc, 2);					\
      ix = (op >> 3) & 7;						\
      if ((op & 0xfcc0) == 0x2800) {		/* ld.- -,ak */		\
        regnum = SP_REGNUM - (op & 7);					\
	disp = read_memory_integer (pc + 2, 2);				\
	pc += 4;}							\
      else if ((op & 0xfcc0) == 0x2840) {	/* ld.- -,ak */		\
        regnum = SP_REGNUM - (op & 7);					\
	disp = read_memory_integer (pc + 2, 4);				\
	pc += 6;}							\
      if ((op & 0xfcc0) == 0x3000) {		/* ld.- -,sk */		\
        regnum = S0_REGNUM - (op & 7);					\
	disp = read_memory_integer (pc + 2, 2);				\
	pc += 4;}							\
      else if ((op & 0xfcc0) == 0x3040) {	/* ld.- -,sk */		\
        regnum = S0_REGNUM - (op & 7);					\
	disp = read_memory_integer (pc + 2, 4);				\
	pc += 6;}							\
      else if ((op & 0xff00) == 0x7100) {	/* br crossjump */	\
        pc += 2 * (char) op;						\
        continue;}							\
      else if (op == 0x0140) {			/* jmp crossjump */	\
        pc = read_memory_integer (pc + 2, 4);				\
        continue;}							\
      else break;							\
      if ((frame_saved_regs).regs[regnum])				\
	break;								\
      if (ix == 7) disp += frame_fp;					\
      else if (ix == 6) disp += read_memory_integer (frame_fp + 12, 4);	\
      else if (ix != 0) break;						\
      (frame_saved_regs).regs[regnum] =					\
	disp - 8 + (1 << ((op >> 8) & 3));				\
      if (regnum >= S7_REGNUM)						\
        (frame_saved_regs).regs[regnum - S0_REGNUM + s0_REGNUM] =	\
	  disp - 4 + (1 << ((op >> 8) & 3));				\
    }									\
  }									\
}
\f
/* Things needed for making the inferior call functions.  */

#define	CALL_DUMMY_LOCATION	BEFORE_TEXT_END

/* Push an empty stack frame, to record the current PC, etc.  */

#define PUSH_DUMMY_FRAME \
{ register CORE_ADDR sp = read_register (SP_REGNUM);			\
  register int regnum;				    			\
  char buf[8];					    			\
  long word;								\
  for (regnum = S0_REGNUM; regnum >= S7_REGNUM; --regnum) { 		\
    read_register_bytes (REGISTER_BYTE (regnum), buf, 8); 		\
    sp = push_bytes (sp, buf, 8);}		    			\
  for (regnum = SP_REGNUM; regnum >= FP_REGNUM; --regnum) { 		\
    word = read_register (regnum);					\
    sp = push_bytes (sp, &word, 4);}   					\
  word = (read_register (PS_REGNUM) &~ (3<<25)) | (1<<25);		\
  sp = push_bytes (sp, &word, 4); 					\
  word = read_register (PC_REGNUM);					\
  sp = push_bytes (sp, &word, 4);   					\
  write_register (SP_REGNUM, sp);		    			\
  write_register (FP_REGNUM, sp);		    			\
  write_register (AP_REGNUM, sp);}

/* Discard from the stack the innermost frame, restoring all registers.  */

#define POP_FRAME  do {\
  register CORE_ADDR fp = read_register (FP_REGNUM);	    \
  register int regnum;					    \
  register int frame_length =	/* 3 short, 2 long, 1 extended, 0 context */ \
      (read_memory_integer (fp + 4, 4) >> 25) & 3;          \
  char buf[8];					            \
  write_register (PC_REGNUM, read_memory_integer (fp, 4));  \
  write_register (PS_REGNUM, read_memory_integer (fp += 4, 4));  \
  write_register (FP_REGNUM, read_memory_integer (fp += 4, 4));  \
  write_register (AP_REGNUM, read_memory_integer (fp += 4, 4));  \
  if (frame_length < 3) 				     \
    for (regnum = A5_REGNUM; regnum < SP_REGNUM; ++regnum)   \
      write_register (regnum, read_memory_integer (fp += 4, 4)); \
  if (frame_length < 2)					     \
    write_register (SP_REGNUM, read_memory_integer (fp += 4, 4)); \
  fp -= 4;							\
  if (frame_length < 3)  					\
    for (regnum = S7_REGNUM; regnum < S0_REGNUM; ++regnum) {	\
      read_memory (fp += 8, buf, 8);				\
      write_register_bytes (REGISTER_BYTE (regnum), buf, 8);}   \
  if (frame_length < 2)	{					\
    read_memory (fp += 8, buf, 8);				\
    write_register_bytes (REGISTER_BYTE (regnum), buf, 8);}     \
  else write_register (SP_REGNUM, fp + 8);			\
  flush_cached_frames ();					\
  set_current_frame (create_new_frame (read_register (FP_REGNUM), \
				       read_pc ())); 		\
} while (0)

/* This sequence of words is the instructions
     mov sp,ap
     pshea 69696969
     calls 32323232
     bkpt
   Note this is 16 bytes.  */

#define CALL_DUMMY {0x50860d4069696969LL,0x2140323232327d50LL}

#define CALL_DUMMY_LENGTH 16

#define CALL_DUMMY_START_OFFSET 0

/* Insert the specified number of args and function address
   into a call sequence of the above form stored at DUMMYNAME.  */

#define FIX_CALL_DUMMY(dummyname, pc, fun, nargs, args, type, gcc_p)   \
{ *(int *)((char *) dummyname + 4) = nargs;	\
  *(int *)((char *) dummyname + 10) = fun; }
\f
/* Defs to read soff symbol tables, see dbxread.c */

#define NUMBER_OF_SYMBOLS    ((long) opthdr.o_nsyms)
#define STRING_TABLE_OFFSET  ((long) filehdr.h_strptr)
#define SYMBOL_TABLE_OFFSET  ((long) opthdr.o_symptr)
#define STRING_TABLE_SIZE    ((long) filehdr.h_strsiz)
#define SIZE_OF_TEXT_SEGMENT ((long) txthdr.s_size)
#define ENTRY_POINT          ((long) opthdr.o_entry)

#define READ_STRING_TABLE_SIZE(BUFFER) \
    (BUFFER = STRING_TABLE_SIZE)

#define DECLARE_FILE_HEADERS \
  FILEHDR filehdr;							\
  OPTHDR opthdr;							\
  SCNHDR txthdr

#define READ_FILE_HEADERS(DESC,NAME) \
{									\
  int n;								\
  val = myread (DESC, &filehdr, sizeof filehdr);			\
  if (val < 0)								\
    perror_with_name (NAME);						\
  if (! IS_SOFF_MAGIC (filehdr.h_magic))				\
    error ("%s: not an executable file.", NAME);			\
  lseek (DESC, 0L, 0);							\
  if (myread (DESC, &filehdr, sizeof filehdr) < 0)			\
    perror_with_name (NAME);						\
  if (myread (DESC, &opthdr, filehdr.h_opthdr) <= 0)			\
    perror_with_name (NAME);						\
  for (n = 0; n < filehdr.h_nscns; n++)					\
    {									\
      if (myread (DESC, &txthdr, sizeof txthdr) < 0)			\
	perror_with_name (NAME);					\
      if ((txthdr.s_flags & S_TYPMASK) == S_TEXT)			\
	break;								\
    }									\
}
Commit	Line	Data
dd3b648e	1	/* Definitions to make GDB run on Convex Unix (4bsd)
58dbaabd	2	Copyright 1989, 1991, 1993 Free Software Foundation, Inc.
dd3b648e RP	3
	4	This file is part of GDB.
	5
99a7de40	6	This program is free software; you can redistribute it and/or modify
dd3b648e	7	it under the terms of the GNU General Public License as published by
99a7de40 JG	8	the Free Software Foundation; either version 2 of the License, or
99a7de40 JG	9	(at your option) any later version.
dd3b648e	10
99a7de40	11	This program is distributed in the hope that it will be useful,
dd3b648e RP	12	but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	GNU General Public License for more details.
	15
	16	You should have received a copy of the GNU General Public License
99a7de40 JG	17	along with this program; if not, write to the Free Software
99a7de40 JG	18	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
dd3b648e RP	19
	20	#define TARGET_BYTE_ORDER BIG_ENDIAN
	21
dd3b648e RP	22	/* There is come problem with the debugging symbols generated by the
	23	compiler such that the debugging symbol for the first line of a
	24	function overlap with the function prologue. */
	25	#define PROLOGUE_FIRSTLINE_OVERLAP
	26
	27	/* When convex pcc says CHAR or SHORT, it provides the correct address. */
	28
	29	#define BELIEVE_PCC_PROMOTION 1
	30
	31	/* Symbol types to ignore. */
	32	/* 0xc4 is N_MONPT. Use the numeric value for the benefit of people
	33	with (rather) old OS's. */
	34	#define IGNORE_SYMBOL(TYPE) \
	35	(((TYPE) & ~N_EXT) == N_TBSS \
	36	\|\| ((TYPE) & ~N_EXT) == N_TDATA \
	37	\|\| ((TYPE) & ~N_EXT) == 0xc4)
	38
	39	/* Offset from address of function to start of its code.
	40	Zero on most machines. */
	41
	42	#define FUNCTION_START_OFFSET 0
	43
	44	/* Advance PC across any function entry prologue instructions
	45	to reach some "real" code.
	46	Convex prolog is:
	47	[sub.w #-,sp] in one of 3 possible sizes
	48	[mov psw,- fc/vc main program prolog
	49	and #-,- (skip it because the "mov psw" saves the
	50	mov -,psw] T bit, so continue gets a surprise trap)
	51	[and #-,sp] fc/vc O2 main program prolog
	52	[ld.- -(ap),-] pcc/gcc register arg loads
	53	*/
	54
	55	#define SKIP_PROLOGUE(pc) \
	56	{ int op, ix; \
	57	op = read_memory_integer (pc, 2); \
	58	if ((op & 0xffc7) == 0x5ac0) pc += 2; \
	59	else if (op == 0x1580) pc += 4; \
	60	else if (op == 0x15c0) pc += 6; \
	61	if ((read_memory_integer (pc, 2) & 0xfff8) == 0x7c40 \
	62	&& (read_memory_integer (pc + 2, 2) & 0xfff8) == 0x1240 \
	63	&& (read_memory_integer (pc + 8, 2) & 0xfff8) == 0x7c48) \
	64	pc += 10; \
	65	if (read_memory_integer (pc, 2) == 0x1240) pc += 6; \
	66	for (;;) { \
	67	op = read_memory_integer (pc, 2); \
	68	ix = (op >> 3) & 7; \
	69	if (ix != 6) break; \
	70	if ((op & 0xfcc0) == 0x3000) pc += 4; \
	71	else if ((op & 0xfcc0) == 0x3040) pc += 6; \
	72	else if ((op & 0xfcc0) == 0x2800) pc += 4; \
	73	else if ((op & 0xfcc0) == 0x2840) pc += 6; \
	74	else break;}}
	75
	76	/* Immediately after a function call, return the saved pc.
	77	(ignore frame and return $sp so we can handle both calls and callq) /
	78
	79	#define SAVED_PC_AFTER_CALL(frame) \
	80	read_memory_integer (read_register (SP_REGNUM), 4)
	81
	82	/* Address of end of stack space.
	83	This is ((USRSTACK + 0xfff) & -0x1000)) from <convex/vmparam.h> but
	84	that expression depends on the kernel version; instead, fetch a
	85	page-zero pointer and get it from that. This will be invalid if
86	they ever change the way bkpt signals are delivered. */
87
88	#define STACK_END_ADDR (0xfffff000 & (unsigned ) 0x80000050)
89
90	/* User-mode traps push an extended rtn block,
91	then fault with one of the following PCs */
92
93	#define is_trace_pc(pc) ((unsigned) ((pc) - ((int ) 0x80000040)) <= 4)
94	#define is_arith_pc(pc) ((unsigned) ((pc) - ((int ) 0x80000044)) <= 4)
95	#define is_break_pc(pc) ((unsigned) ((pc) - ((int ) 0x80000050)) <= 4)
96
97	/* We need to manipulate trap bits in the psw */
98
99	#define PSW_TRAP_FLAGS 0x69670000
100	#define PSW_T_BIT 0x08000000
101	#define PSW_S_BIT 0x01000000
102
103	/* Stack grows downward. */
104
105	#define INNER_THAN <
106
107	/* Sequence of bytes for breakpoint instruction. (bkpt) */
108
109	#define BREAKPOINT {0x7d,0x50}
110
111	/* Amount PC must be decremented by after a breakpoint.
112	This is often the number of bytes in BREAKPOINT but not always.
113	(The break PC needs to be decremented by 2, but we do it when the
114	break frame is recognized and popped. That way gdb can tell breaks
115	from trace traps with certainty.) */
116
117	#define DECR_PC_AFTER_BREAK 0
118
119	/* Nonzero if instruction at PC is a return instruction. (rtn or rtnq) */
120
121	#define ABOUT_TO_RETURN(pc) \
122	((read_memory_integer (pc, 2) & 0xffe0) == 0x7c80)
123
124	/* Return 1 if P points to an invalid floating point value. */
125
126	#define INVALID_FLOAT(p,len) 0
127
128	/* Say how long (ordinary) registers are. */
129
130	#define REGISTER_TYPE long long
131
132	/* Number of machine registers */
133
134	#define NUM_REGS 26
135
136	/* Initializer for an array of names of registers.
137	There should be NUM_REGS strings in this initializer. */
138
139	#define REGISTER_NAMES {"pc","psw","fp","ap","a5","a4","a3","a2","a1","sp",\
140	"s7","s6","s5","s4","s3","s2","s1","s0",\
141	"S7","S6","S5","S4","S3","S2","S1","S0"}
142
143	/* Register numbers of various important registers.
144	Note that some of these values are "real" register numbers,
145	and correspond to the general registers of the machine,
146	and some are "phony" register numbers which are too large
147	to be actual register numbers as far as the user is concerned
148	but do serve to get the desired values when passed to read_register. */
149
150	#define S0_REGNUM 25 /* the real S regs */
151	#define S7_REGNUM 18
152	#define s0_REGNUM 17 /* low-order halves of S regs */
153	#define s7_REGNUM 10
154	#define SP_REGNUM 9 /* A regs */
155	#define A1_REGNUM 8
156	#define A5_REGNUM 4
157	#define AP_REGNUM 3
158	#define FP_REGNUM 2 /* Contains address of executing stack frame */
159	#define PS_REGNUM 1 /* Contains processor status */
160	#define PC_REGNUM 0 /* Contains program counter */
161
162	/* convert dbx stab register number (from `r' declaration) to a gdb REGNUM */
163
164	#define STAB_REG_TO_REGNUM(value) \
165	((value) < 8 ? S0_REGNUM - (value) : SP_REGNUM - ((value) - 8))
166
167	/* Vector register numbers, not handled as ordinary regs.
168	They are treated as convenience variables whose values are read
169	from the inferior when needed. */
170
171	#define V0_REGNUM 0
172	#define V7_REGNUM 7
173	#define VM_REGNUM 8
174	#define VS_REGNUM 9
175	#define VL_REGNUM 10
176
177	/* Total amount of space needed to store our copies of the machine's
178	register state, the array `registers'. */
179	#define REGISTER_BYTES (410 + 88)
180
181	/* Index within `registers' of the first byte of the space for
182	register N.
183	NB: must match structure of struct syscall_context for correct operation */
184
185	#define REGISTER_BYTE(N) ((N) < s7_REGNUM ? 4*(N) : \
186	(N) < S7_REGNUM ? 44 + 8 * ((N)-s7_REGNUM) : \
187	40 + 8 * ((N)-S7_REGNUM))
188
189	/* Number of bytes of storage in the actual machine representation
190	for register N. */
191
192	#define REGISTER_RAW_SIZE(N) ((N) < S7_REGNUM ? 4 : 8)
193
194	/* Number of bytes of storage in the program's representation
195	for register N. */
196
197	#define REGISTER_VIRTUAL_SIZE(N) REGISTER_RAW_SIZE(N)
198
199	/* Largest value REGISTER_RAW_SIZE can have. */
200
201	#define MAX_REGISTER_RAW_SIZE 8
202
203	/* Largest value REGISTER_VIRTUAL_SIZE can have. */
204
205	#define MAX_REGISTER_VIRTUAL_SIZE 8
206
207	/* Nonzero if register N requires conversion
208	from raw format to virtual format. */
209
210	#define REGISTER_CONVERTIBLE(N) 0
211
212	/* Convert data from raw format for register REGNUM
213	to virtual format for register REGNUM. */
214
215	#define REGISTER_CONVERT_TO_VIRTUAL(REGNUM,FROM,TO) \
216	bcopy ((FROM), (TO), REGISTER_RAW_SIZE (REGNUM));
217
218	/* Convert data from virtual format for register REGNUM
219	to raw format for register REGNUM. */
220
221	#define REGISTER_CONVERT_TO_RAW(REGNUM,FROM,TO) \
222	bcopy ((FROM), (TO), REGISTER_RAW_SIZE (REGNUM));
223
224	/* Return the GDB type object for the "standard" data type
225	of data in register N. */
226
227	#define REGISTER_VIRTUAL_TYPE(N) \
228	((N) < S7_REGNUM ? builtin_type_int : builtin_type_long_long)
229
230	/* Store the address of the place in which to copy the structure the
231	subroutine will return. This is called from call_function. */
232
233	#define STORE_STRUCT_RETURN(ADDR, SP) \
234	{ write_register (A1_REGNUM, (ADDR)); }
235
236	/* Extract from an array REGBUF containing the (raw) register state
237	a function return value of type TYPE, and copy that, in virtual format,
238	into VALBUF. */
239
240	#define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
241	bcopy (&((char *) REGBUF) [REGISTER_BYTE (S0_REGNUM) + \
242	8 - TYPE_LENGTH (TYPE)],\
243	VALBUF, TYPE_LENGTH (TYPE))
244
245	/* Write into appropriate registers a function return value
246	of type TYPE, given in virtual format. */
247
248	#define STORE_RETURN_VALUE(TYPE,VALBUF) \
249	write_register_bytes (REGISTER_BYTE (S0_REGNUM), VALBUF, 8)
250
251	/* Extract from an array REGBUF containing the (raw) register state
252	the address in which a function should return its structure value,
253	as a CORE_ADDR (or an expression that can be used as one). */
254
255	#define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) \
256	((int ) & ((char *) REGBUF) [REGISTER_BYTE (s0_REGNUM)])
257
258	/* Define trapped internal variable hooks to read and write
259	vector and communication registers. */
260
261	#define IS_TRAPPED_INTERNALVAR is_trapped_internalvar
262	#define VALUE_OF_TRAPPED_INTERNALVAR value_of_trapped_internalvar
263	#define SET_TRAPPED_INTERNALVAR set_trapped_internalvar
264
265	extern struct value *value_of_trapped_internalvar ();
266
267	/* Hooks to read data from soff exec and core files,
268	and to describe the files. */
269
270	#define XFER_CORE_FILE
271	#define FILES_INFO_HOOK print_maps
272
273	/* Hook to call to print a typeless integer value, normally printed in decimal.
274	For convex, use hex instead if the number looks like an address. */
275
276	#define PRINT_TYPELESS_INTEGER decout
277
278	/* For the native compiler, variables for a particular lexical context
279	are listed after the beginning LBRAC instead of before in the
280	executables list of symbols. Using "gcc_compiled." to distinguish
281	between GCC and native compiler doesn't work on Convex because the
282	linker sorts the symbols to put "gcc_compiled." in the wrong place.
283	desc is nonzero for native, zero for gcc. */
284	#define VARIABLES_INSIDE_BLOCK(desc, gcc_p) (desc != 0)
285
286	/* Pcc occaisionally puts an SO where there should be an SOL. */
287	#define PCC_SOL_BROKEN
dd3b648e RP	288	\f
	289	/* Describe the pointer in each stack frame to the previous stack frame
	290	(its caller). */
	291
	292	/* FRAME_CHAIN takes a frame_info with a frame's nominal address in fi->frame,
5e2e79f8	293	and produces the frame's chain-pointer. */
dd3b648e RP	294
	295	/* (caller fp is saved at 8(fp)) */
	296
	297	#define FRAME_CHAIN(fi) (read_memory_integer ((fi)->frame + 8, 4))
	298
dd3b648e RP	299	/* Define other aspects of the stack frame. */
dd3b648e RP	300
841c051c JG	301	/* We need the boundaries of the text in the exec file, as a kludge,
	302	for FRAMELESS_FUNCTION_INVOCATION and CALL_DUMMY_LOCATION. */
	303
	304	#define NEED_TEXT_START_END
	305
dd3b648e RP	306	/* A macro that tells us whether the function invocation represented
	307	by FI does not have a frame on the stack associated with it. If it
	308	does not, FRAMELESS is set to 1, else 0.
	309	On convex, check at the return address for `callq' -- if so, frameless,
	310	otherwise, not. */
	311
	312	#define FRAMELESS_FUNCTION_INVOCATION(FI, FRAMELESS) \
	313	{ \
	314	extern CORE_ADDR text_start, text_end; \
	315	CORE_ADDR call_addr = SAVED_PC_AFTER_CALL (FI); \
	316	(FRAMELESS) = (call_addr >= text_start && call_addr < text_end \
	317	&& read_memory_integer (call_addr - 6, 1) == 0x22); \
	318	}
	319
	320	#define FRAME_SAVED_PC(fi) (read_memory_integer ((fi)->frame, 4))
	321
	322	#define FRAME_ARGS_ADDRESS(fi) (read_memory_integer ((fi)->frame + 12, 4))
	323
	324	#define FRAME_LOCALS_ADDRESS(fi) (fi)->frame
	325
	326	/* Return number of args passed to a frame.
	327	Can return -1, meaning no way to tell. */
	328
	329	#define FRAME_NUM_ARGS(numargs, fi) \
	330	{ numargs = read_memory_integer (FRAME_ARGS_ADDRESS (fi) - 4, 4); \
	331	if (numargs < 0 \|\| numargs >= 256) numargs = -1;}
	332
	333	/* Return number of bytes at start of arglist that are not really args. */
	334
	335	#define FRAME_ARGS_SKIP 0
	336
	337	/* Put here the code to store, into a struct frame_saved_regs,
	338	the addresses of the saved registers of frame described by FRAME_INFO.
	339	This includes special registers such as pc and fp saved in special
	340	ways in the stack frame. sp is even more special:
	341	the address we return for it IS the sp for the next frame. */
	342
	343	/* Normal (short) frames save only PC, FP, (callee's) AP. To reasonably
	344	handle gcc and pcc register variables, scan the code following the
	345	call for the instructions the compiler inserts to reload register
	346	variables from stack slots and record the stack slots as the saved
	347	locations of those registers. This will occasionally identify some
	348	random load as a saved register; this is harmless. vc does not
	349	declare its register allocation actions in the stabs. */
	350
	351	#define FRAME_FIND_SAVED_REGS(frame_info, frame_saved_regs) \
	352	{ register int regnum; \
	353	register int frame_length = /* 3 short, 2 long, 1 extended, 0 context */\
	354	(read_memory_integer ((frame_info)->frame + 4, 4) >> 25) & 3; \
	355	register CORE_ADDR frame_fp = \
	356	read_memory_integer ((frame_info)->frame + 8, 4); \
	357	register CORE_ADDR next_addr; \
	358	bzero (&frame_saved_regs, sizeof frame_saved_regs); \
	359	(frame_saved_regs).regs[PC_REGNUM] = (frame_info)->frame + 0; \
	360	(frame_saved_regs).regs[PS_REGNUM] = (frame_info)->frame + 4; \
	361	(frame_saved_regs).regs[FP_REGNUM] = (frame_info)->frame + 8; \
	362	(frame_saved_regs).regs[AP_REGNUM] = frame_fp + 12; \
	363	next_addr = (frame_info)->frame + 12; \
	364	if (frame_length < 3) \
	365	for (regnum = A5_REGNUM; regnum < SP_REGNUM; ++regnum) \
	366	(frame_saved_regs).regs[regnum] = (next_addr += 4); \
	367	if (frame_length < 2) \
	368	(frame_saved_regs).regs[SP_REGNUM] = (next_addr += 4); \
	369	next_addr -= 4; \
370	if (frame_length < 3) \
371	for (regnum = S7_REGNUM; regnum < S0_REGNUM; ++regnum) \
372	(frame_saved_regs).regs[regnum] = (next_addr += 8); \
373	if (frame_length < 2) \
374	(frame_saved_regs).regs[S0_REGNUM] = (next_addr += 8); \
375	else \
376	(frame_saved_regs).regs[SP_REGNUM] = next_addr + 8; \
377	if (frame_length == 3) { \
378	CORE_ADDR pc = read_memory_integer ((frame_info)->frame, 4); \
379	int op, ix, disp; \
380	op = read_memory_integer (pc, 2); \
381	if ((op & 0xffc7) == 0x1480) pc += 4; /* add.w #-,sp */ \
382	else if ((op & 0xffc7) == 0x58c0) pc += 2; /* add.w #-,sp */ \
383	op = read_memory_integer (pc, 2); \
384	if ((op & 0xffc7) == 0x2a06) pc += 4; /* ld.w -,ap */ \
385	for (;;) { \
386	op = read_memory_integer (pc, 2); \
387	ix = (op >> 3) & 7; \
388	if ((op & 0xfcc0) == 0x2800) { /* ld.- -,ak */ \
389	regnum = SP_REGNUM - (op & 7); \
390	disp = read_memory_integer (pc + 2, 2); \
391	pc += 4;} \
392	else if ((op & 0xfcc0) == 0x2840) { /* ld.- -,ak */ \
393	regnum = SP_REGNUM - (op & 7); \
394	disp = read_memory_integer (pc + 2, 4); \
395	pc += 6;} \
396	if ((op & 0xfcc0) == 0x3000) { /* ld.- -,sk */ \
397	regnum = S0_REGNUM - (op & 7); \
398	disp = read_memory_integer (pc + 2, 2); \
399	pc += 4;} \
400	else if ((op & 0xfcc0) == 0x3040) { /* ld.- -,sk */ \
401	regnum = S0_REGNUM - (op & 7); \
402	disp = read_memory_integer (pc + 2, 4); \
403	pc += 6;} \
404	else if ((op & 0xff00) == 0x7100) { /* br crossjump */ \
405	pc += 2 * (char) op; \
406	continue;} \
407	else if (op == 0x0140) { /* jmp crossjump */ \
408	pc = read_memory_integer (pc + 2, 4); \
409	continue;} \
410	else break; \
411	if ((frame_saved_regs).regs[regnum]) \
412	break; \
413	if (ix == 7) disp += frame_fp; \
414	else if (ix == 6) disp += read_memory_integer (frame_fp + 12, 4); \
415	else if (ix != 0) break; \
416	(frame_saved_regs).regs[regnum] = \
417	disp - 8 + (1 << ((op >> 8) & 3)); \
418	if (regnum >= S7_REGNUM) \
419	(frame_saved_regs).regs[regnum - S0_REGNUM + s0_REGNUM] = \
420	disp - 4 + (1 << ((op >> 8) & 3)); \
421	} \
422	} \
423	}
424	\f
425	/* Things needed for making the inferior call functions. */
426
841c051c JG	427	#define CALL_DUMMY_LOCATION BEFORE_TEXT_END
841c051c JG	428
dd3b648e RP	429	/* Push an empty stack frame, to record the current PC, etc. */
	430
	431	#define PUSH_DUMMY_FRAME \
	432	{ register CORE_ADDR sp = read_register (SP_REGNUM); \
	433	register int regnum; \
	434	char buf[8]; \
	435	long word; \
	436	for (regnum = S0_REGNUM; regnum >= S7_REGNUM; --regnum) { \
	437	read_register_bytes (REGISTER_BYTE (regnum), buf, 8); \
	438	sp = push_bytes (sp, buf, 8);} \
	439	for (regnum = SP_REGNUM; regnum >= FP_REGNUM; --regnum) { \
	440	word = read_register (regnum); \
	441	sp = push_bytes (sp, &word, 4);} \
	442	word = (read_register (PS_REGNUM) &~ (3<<25)) \| (1<<25); \
	443	sp = push_bytes (sp, &word, 4); \
	444	word = read_register (PC_REGNUM); \
	445	sp = push_bytes (sp, &word, 4); \
	446	write_register (SP_REGNUM, sp); \
	447	write_register (FP_REGNUM, sp); \
	448	write_register (AP_REGNUM, sp);}
	449
	450	/* Discard from the stack the innermost frame, restoring all registers. */
	451
	452	#define POP_FRAME do {\
	453	register CORE_ADDR fp = read_register (FP_REGNUM); \
	454	register int regnum; \
	455	register int frame_length = /* 3 short, 2 long, 1 extended, 0 context */ \
	456	(read_memory_integer (fp + 4, 4) >> 25) & 3; \
	457	char buf[8]; \
	458	write_register (PC_REGNUM, read_memory_integer (fp, 4)); \
	459	write_register (PS_REGNUM, read_memory_integer (fp += 4, 4)); \
	460	write_register (FP_REGNUM, read_memory_integer (fp += 4, 4)); \
	461	write_register (AP_REGNUM, read_memory_integer (fp += 4, 4)); \
	462	if (frame_length < 3) \
	463	for (regnum = A5_REGNUM; regnum < SP_REGNUM; ++regnum) \
	464	write_register (regnum, read_memory_integer (fp += 4, 4)); \
	465	if (frame_length < 2) \
	466	write_register (SP_REGNUM, read_memory_integer (fp += 4, 4)); \
	467	fp -= 4; \
	468	if (frame_length < 3) \
	469	for (regnum = S7_REGNUM; regnum < S0_REGNUM; ++regnum) { \
	470	read_memory (fp += 8, buf, 8); \
	471	write_register_bytes (REGISTER_BYTE (regnum), buf, 8);} \
	472	if (frame_length < 2) { \
	473	read_memory (fp += 8, buf, 8); \
	474	write_register_bytes (REGISTER_BYTE (regnum), buf, 8);} \
	475	else write_register (SP_REGNUM, fp + 8); \
	476	flush_cached_frames (); \
	477	set_current_frame (create_new_frame (read_register (FP_REGNUM), \
	478	read_pc ())); \
	479	} while (0)
	480
	481	/* This sequence of words is the instructions
	482	mov sp,ap
	483	pshea 69696969
	484	calls 32323232
	485	bkpt
	486	Note this is 16 bytes. */
	487
	488	#define CALL_DUMMY {0x50860d4069696969LL,0x2140323232327d50LL}
	489
	490	#define CALL_DUMMY_LENGTH 16
	491
	492	#define CALL_DUMMY_START_OFFSET 0
493
494	/* Insert the specified number of args and function address
495	into a call sequence of the above form stored at DUMMYNAME. */
496
497	#define FIX_CALL_DUMMY(dummyname, pc, fun, nargs, args, type, gcc_p) \
498	{ (int )((char *) dummyname + 4) = nargs; \
499	(int )((char *) dummyname + 10) = fun; }
500	\f
501	/* Defs to read soff symbol tables, see dbxread.c */
502
503	#define NUMBER_OF_SYMBOLS ((long) opthdr.o_nsyms)
504	#define STRING_TABLE_OFFSET ((long) filehdr.h_strptr)
505	#define SYMBOL_TABLE_OFFSET ((long) opthdr.o_symptr)
506	#define STRING_TABLE_SIZE ((long) filehdr.h_strsiz)
507	#define SIZE_OF_TEXT_SEGMENT ((long) txthdr.s_size)
508	#define ENTRY_POINT ((long) opthdr.o_entry)
509
510	#define READ_STRING_TABLE_SIZE(BUFFER) \
511	(BUFFER = STRING_TABLE_SIZE)
512
513	#define DECLARE_FILE_HEADERS \
514	FILEHDR filehdr; \
515	OPTHDR opthdr; \
516	SCNHDR txthdr
517
518	#define READ_FILE_HEADERS(DESC,NAME) \
519	{ \
520	int n; \
521	val = myread (DESC, &filehdr, sizeof filehdr); \
522	if (val < 0) \
523	perror_with_name (NAME); \
524	if (! IS_SOFF_MAGIC (filehdr.h_magic)) \
525	error ("%s: not an executable file.", NAME); \
526	lseek (DESC, 0L, 0); \
527	if (myread (DESC, &filehdr, sizeof filehdr) < 0) \
528	perror_with_name (NAME); \
529	if (myread (DESC, &opthdr, filehdr.h_opthdr) <= 0) \
530	perror_with_name (NAME); \
531	for (n = 0; n < filehdr.h_nscns; n++) \
532	{ \
533	if (myread (DESC, &txthdr, sizeof txthdr) < 0) \
534	perror_with_name (NAME); \
535	if ((txthdr.s_flags & S_TYPMASK) == S_TEXT) \
536	break; \
537	} \
538	}