[binutils.git] / gdb / tm-tahoe.h

/* Definitions to make GDB target for a tahoe running 4.3-Reno.
   Copyright (C) 1986, 1987, 1989, 1991 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.  */

/*
 * Ported by the State University of New York at Buffalo by the Distributed
 * Computer Systems Lab, Department of Computer Science, 1991.
 */

#define TARGET_BYTE_ORDER BIG_ENDIAN
#define BITS_BIG_ENDIAN 0

/* Define this if the C compiler puts an underscore at the front
   of external names before giving them to the linker.  */

#define NAMES_HAVE_UNDERSCORE

/* Debugger information will be in DBX format.  */

#define READ_DBX_FORMAT

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

#define FUNCTION_START_OFFSET 2

/* Advance PC across any function entry prologue instructions
   to reach some "real" code.  */

#define SKIP_PROLOGUE(pc)	\
{ register int op = (unsigned char) read_memory_integer (pc, 1);  \
  if (op == 0x11) pc += 2;  /* skip brb */			  \
  if (op == 0x13) pc += 3;  /* skip brw */			  \
  if (op == 0x2c &&						  \
      ((unsigned char) read_memory_integer (pc+2, 1)) == 0x5e)	  \
    pc += 3;  /* skip subl2 */					  \
  if (op == 0xe9 &&						  \
      ((unsigned char) read_memory_integer (pc+1, 1)) == 0xae &&  \
      ((unsigned char) read_memory_integer(pc+3, 1)) == 0x5e)	  \
     pc += 4;  /* skip movab */					  \
  if (op == 0xe9 &&						  \
      ((unsigned char) read_memory_integer (pc+1, 1)) == 0xce &&  \
      ((unsigned char) read_memory_integer(pc+4, 1)) == 0x5e)	  \
    pc += 5;  /* skip movab */					  \
  if (op == 0xe9 &&						  \
      ((unsigned char) read_memory_integer (pc+1, 1)) == 0xee &&  \
      ((unsigned char) read_memory_integer(pc+6, 1)) == 0x5e)	  \
    pc += 7;  /* skip movab */					  \
}

/* Immediately after a function call, return the saved pc.
   Can't always go through the frames for this because on some machines
   the new frame is not set up until the new function executes
   some instructions.  */

#define SAVED_PC_AFTER_CALL(frame) FRAME_SAVED_PC(frame)

/* Wrong for cross-debugging.  I don't know the real values.  */
#include <machine/param.h>
#define TARGET_UPAGES UPAGES
#define TARGET_NBPG NBPG

/* This is the amount to subtract from u.u_ar0
   to get the offset in the core file of the register values.  */

#define KERNEL_U_ADDR (0xc0000000 - (TARGET_UPAGES * TARGET_NBPG))

/* Address of end of stack space.  */

#define STACK_END_ADDR (0xc0000000 - (TARGET_UPAGES * TARGET_NBPG))

/* On BSD, sigtramp is in the u area.  Can't check the exact
   addresses because for cross-debugging we don't have target include
   files around.  This should be close enough.  */
#define IN_SIGTRAMP(pc, name) ((pc) >= STACK_END_ADDR && (pc < 0xc0000000))

/* Stack grows downward.  */

#define INNER_THAN <

/* Sequence of bytes for breakpoint instruction.  */

#define BREAKPOINT {0x30}

/* Amount PC must be decremented by after a breakpoint.
   This is often the number of bytes in BREAKPOINT
   but not always.  */

#define DECR_PC_AFTER_BREAK 0

/* Nonzero if instruction at PC is a return instruction.  */

#define ABOUT_TO_RETURN(pc) (read_memory_integer (pc, 1) == 0x40)

/* Return 1 if P points to an invalid floating point value.
   LEN is the length in bytes -- not relevant on the Tahoe. */

#define INVALID_FLOAT(p, len) ((*(short *) p & 0xff80) == 0x8000)

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

#define REGISTER_TYPE long

/* Number of machine registers */

#define NUM_REGS 19

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

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

#define FP_REGNUM 13		/* Contains address of executing stack frame */
#define SP_REGNUM 14		/* Contains address of top of stack */
#define PC_REGNUM 15		/* Contains program counter */
#define PS_REGNUM 16		/* Contains processor status */

#define AL_REGNUM 17		/* Contains accumulator */
#define AH_REGNUM 18

/* Total amount of space needed to store our copies of the machine's
   register state, the array `registers'.  */

#define REGISTER_BYTES (19*4)

/* Index within `registers' of the first byte of the space for
   register N.  */

#define REGISTER_BYTE(N) ((N) * 4)

/* Number of bytes of storage in the actual machine representation
   for register N.  On the tahoe, all regs are 4 bytes.  */

#define REGISTER_RAW_SIZE(N) 4

/* Number of bytes of storage in the program's representation
   for register N.  On the tahoe, all regs are 4 bytes.  */

#define REGISTER_VIRTUAL_SIZE(N) 4

/* Largest value REGISTER_RAW_SIZE can have.  */

#define MAX_REGISTER_RAW_SIZE 4

/* Largest value REGISTER_VIRTUAL_SIZE can have.  */

#define MAX_REGISTER_VIRTUAL_SIZE 4

/* 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), 4);

/* 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), 4);

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

#define REGISTER_VIRTUAL_TYPE(N) builtin_type_int

/* 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 (1, (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 (REGBUF, 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 (0, VALBUF, TYPE_LENGTH (TYPE))

/* 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 *)(REGBUF))

/* Describe the pointer in each stack frame to the previous stack frame
   (its caller).

   FRAME_CHAIN takes a frame's nominal address
   and produces the frame's chain-pointer.

   FRAME_CHAIN_COMBINE takes the chain pointer and the frame's nominal address
   and produces the nominal address of the caller frame.

   However, if FRAME_CHAIN_VALID returns zero,
   it means the given frame is the outermost one and has no caller.
   In that case, FRAME_CHAIN_COMBINE is not used.  */

/* In the case of the Tahoe, the frame's nominal address is the FP value,
   and it points to the old FP */

#define FRAME_CHAIN(thisframe)  \
  (outside_startup_file ((thisframe)->pc) ? \
   read_memory_integer ((thisframe)->frame, 4) :\
   0)

#define FRAME_CHAIN_VALID(chain, thisframe) \
  (chain != 0 && (outside_startup_file (FRAME_SAVED_PC (thisframe))))

#define FRAME_CHAIN_COMBINE(chain, thisframe) (chain)

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

/* Saved PC */

#define FRAME_SAVED_PC(FRAME) (read_memory_integer ((FRAME)->frame - 8, 4))

/* In most of GDB, getting the args address is too important to
   just say "I don't know". */

#define FRAME_ARGS_ADDRESS(fi) ((fi)->frame+4)

/* Address to use as an anchor for finding local variables */

#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 = ((0xffff & read_memory_integer(((fi)->frame-4),4)) - 4) >> 2; }

/* 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.  */

#define FRAME_FIND_SAVED_REGS(frame_info, frame_saved_regs) \
{ register int regnum;     \
  register int rmask = read_memory_integer ((frame_info)->frame-4, 4) >> 16;\
  register CORE_ADDR next_addr;     \
  bzero (&frame_saved_regs, sizeof frame_saved_regs);     \
  next_addr = (frame_info)->frame - 8;     \
  for (regnum = 12; regnum >= 0; regnum--, rmask <<= 1)  \
    (frame_saved_regs).regs[regnum] = (rmask & 0x1000) ? (next_addr -= 4) : 0;\
  (frame_saved_regs).regs[SP_REGNUM] = (frame_info)->frame + 4;  \
  (frame_saved_regs).regs[PC_REGNUM] = (frame_info)->frame - 8;  \
  (frame_saved_regs).regs[FP_REGNUM] = (frame_info)->frame;      \
}

/* Things needed for making the inferior call functions.  */

/* 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;					\
printf("PUSH_DUMMY_FRAME\n");				\
  sp = push_word (sp, read_register (FP_REGNUM));	\
  write_register (FP_REGNUM, sp);			\
  sp = push_word (sp, 0x1fff0004);   /*SAVE MASK*/	\
  sp = push_word (sp, read_register (PC_REGNUM));	\
  for (regnum = 12; regnum >= 0; regnum--)		\
    sp = push_word (sp, read_register (regnum));	\
  write_register (SP_REGNUM, sp);			\
}

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

#define POP_FRAME  \
{ register CORE_ADDR fp = read_register (FP_REGNUM);			\
  register int regnum;							\
  register int regmask = read_memory_integer (fp-4, 4);			\
printf("POP_FRAME\n");							\
  regmask >>= 16;                                               	\
  write_register (SP_REGNUM, fp+4);	                           	\
  write_register (PC_REGNUM, read_memory_integer(fp-8, 4));	  	\
  write_register (FP_REGNUM, read_memory_integer(fp, 4));  		\
  fp -= 8;								\
  for (regnum = 12; regnum >= 0; regnum--, regmask <<= 1)		\
    if (regmask & 0x1000)                                            	\
      write_register (regnum, read_memory_integer (fp-=4, 4));		\
  flush_cached_frames ();						\
  set_current_frame (create_new_frame (read_register (FP_REGNUM),	\
					read_pc ())); }

/* This sequence of words is the instructions
     calls #69, @#32323232
     bpt
   Note this is 8 bytes.  */

#define CALL_DUMMY {0xbf699f32, 0x32323230}

/* Start execution at beginning of dummy */

#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, valtype, using_gcc) \
{ int temp = (int) fun;				\
  *((char *) dummyname + 1) = nargs;		\
  bcopy(&temp,(char *)dummyname+3,4); }
Commit	Line	Data
cb173f45 JK	1	/* Definitions to make GDB target for a tahoe running 4.3-Reno.
	2	Copyright (C) 1986, 1987, 1989, 1991 Free Software Foundation, Inc.
	3
	4	This file is part of GDB.
	5
99a7de40	6	This program is free software; you can redistribute it and/or modify
cb173f45	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.
cb173f45	10
99a7de40	11	This program is distributed in the hope that it will be useful,
cb173f45 JK	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. */
cb173f45 JK	19
	20	/*
	21	* Ported by the State University of New York at Buffalo by the Distributed
	22	* Computer Systems Lab, Department of Computer Science, 1991.
	23	*/
	24
	25	#define TARGET_BYTE_ORDER BIG_ENDIAN
	26	#define BITS_BIG_ENDIAN 0
	27
	28	/* Define this if the C compiler puts an underscore at the front
	29	of external names before giving them to the linker. */
	30
	31	#define NAMES_HAVE_UNDERSCORE
	32
	33	/* Debugger information will be in DBX format. */
	34
	35	#define READ_DBX_FORMAT
	36
	37	/* Offset from address of function to start of its code.
	38	Zero on most machines. */
	39
	40	#define FUNCTION_START_OFFSET 2
	41
	42	/* Advance PC across any function entry prologue instructions
	43	to reach some "real" code. */
	44
	45	#define SKIP_PROLOGUE(pc) \
	46	{ register int op = (unsigned char) read_memory_integer (pc, 1); \
	47	if (op == 0x11) pc += 2; /* skip brb */ \
	48	if (op == 0x13) pc += 3; /* skip brw */ \
	49	if (op == 0x2c && \
	50	((unsigned char) read_memory_integer (pc+2, 1)) == 0x5e) \
	51	pc += 3; /* skip subl2 */ \
	52	if (op == 0xe9 && \
	53	((unsigned char) read_memory_integer (pc+1, 1)) == 0xae && \
	54	((unsigned char) read_memory_integer(pc+3, 1)) == 0x5e) \
	55	pc += 4; /* skip movab */ \
	56	if (op == 0xe9 && \
	57	((unsigned char) read_memory_integer (pc+1, 1)) == 0xce && \
	58	((unsigned char) read_memory_integer(pc+4, 1)) == 0x5e) \
	59	pc += 5; /* skip movab */ \
	60	if (op == 0xe9 && \
	61	((unsigned char) read_memory_integer (pc+1, 1)) == 0xee && \
	62	((unsigned char) read_memory_integer(pc+6, 1)) == 0x5e) \
	63	pc += 7; /* skip movab */ \
	64	}
	65
	66	/* Immediately after a function call, return the saved pc.
	67	Can't always go through the frames for this because on some machines
	68	the new frame is not set up until the new function executes
	69	some instructions. */
	70
	71	#define SAVED_PC_AFTER_CALL(frame) FRAME_SAVED_PC(frame)
	72
	73	/* Wrong for cross-debugging. I don't know the real values. */
0c540082	74	#include <machine/param.h>
cb173f45 JK	75	#define TARGET_UPAGES UPAGES
	76	#define TARGET_NBPG NBPG
	77
	78	/* This is the amount to subtract from u.u_ar0
	79	to get the offset in the core file of the register values. */
	80
	81	#define KERNEL_U_ADDR (0xc0000000 - (TARGET_UPAGES * TARGET_NBPG))
	82
	83	/* Address of end of stack space. */
	84
	85	#define STACK_END_ADDR (0xc0000000 - (TARGET_UPAGES * TARGET_NBPG))
	86
	87	/* On BSD, sigtramp is in the u area. Can't check the exact
	88	addresses because for cross-debugging we don't have target include
	89	files around. This should be close enough. */
	90	#define IN_SIGTRAMP(pc, name) ((pc) >= STACK_END_ADDR && (pc < 0xc0000000))
	91
	92	/* Stack grows downward. */
	93
	94	#define INNER_THAN <
	95
	96	/* Sequence of bytes for breakpoint instruction. */
	97
	98	#define BREAKPOINT {0x30}
	99
	100	/* Amount PC must be decremented by after a breakpoint.
	101	This is often the number of bytes in BREAKPOINT
	102	but not always. */
	103
	104	#define DECR_PC_AFTER_BREAK 0
	105
	106	/* Nonzero if instruction at PC is a return instruction. */
	107
	108	#define ABOUT_TO_RETURN(pc) (read_memory_integer (pc, 1) == 0x40)
	109
	110	/* Return 1 if P points to an invalid floating point value.
	111	LEN is the length in bytes -- not relevant on the Tahoe. */
	112
	113	#define INVALID_FLOAT(p, len) (((short ) p & 0xff80) == 0x8000)
	114
	115	/* Say how long (ordinary) registers are. */
	116
	117	#define REGISTER_TYPE long
	118
	119	/* Number of machine registers */
	120
	121	#define NUM_REGS 19
	122
	123	/* Initializer for an array of names of registers.
	124	There should be NUM_REGS strings in this initializer. */
	125
	126	#define REGISTER_NAMES {"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12", "fp", "sp", "pc", "ps", "al", "ah"}
	127
	128	#define FP_REGNUM 13 /* Contains address of executing stack frame */
	129	#define SP_REGNUM 14 /* Contains address of top of stack */
	130	#define PC_REGNUM 15 /* Contains program counter */
	131	#define PS_REGNUM 16 /* Contains processor status */
	132
	133	#define AL_REGNUM 17 /* Contains accumulator */
	134	#define AH_REGNUM 18
	135
	136	/* Total amount of space needed to store our copies of the machine's
	137	register state, the array `registers'. */
	138
139	#define REGISTER_BYTES (19*4)
140
141	/* Index within `registers' of the first byte of the space for
142	register N. */
143
144	#define REGISTER_BYTE(N) ((N) * 4)
145
146	/* Number of bytes of storage in the actual machine representation
147	for register N. On the tahoe, all regs are 4 bytes. */
148
149	#define REGISTER_RAW_SIZE(N) 4
150
151	/* Number of bytes of storage in the program's representation
152	for register N. On the tahoe, all regs are 4 bytes. */
153
154	#define REGISTER_VIRTUAL_SIZE(N) 4
155
156	/* Largest value REGISTER_RAW_SIZE can have. */
157
158	#define MAX_REGISTER_RAW_SIZE 4
159
160	/* Largest value REGISTER_VIRTUAL_SIZE can have. */
161
162	#define MAX_REGISTER_VIRTUAL_SIZE 4
163
164	/* Nonzero if register N requires conversion
165	from raw format to virtual format. */
166
167	#define REGISTER_CONVERTIBLE(N) 0
168
169	/* Convert data from raw format for register REGNUM
170	to virtual format for register REGNUM. */
171
172	#define REGISTER_CONVERT_TO_VIRTUAL(REGNUM,FROM,TO) \
173	bcopy ((FROM), (TO), 4);
174
175	/* Convert data from virtual format for register REGNUM
176	to raw format for register REGNUM. */
177
178	#define REGISTER_CONVERT_TO_RAW(REGNUM,FROM,TO) \
179	bcopy ((FROM), (TO), 4);
180
181	/* Return the GDB type object for the "standard" data type
182	of data in register N. */
183
184	#define REGISTER_VIRTUAL_TYPE(N) builtin_type_int
185
186	/* Store the address of the place in which to copy the structure the
187	subroutine will return. This is called from call_function. */
188
189	#define STORE_STRUCT_RETURN(ADDR, SP) \
190	{ write_register (1, (ADDR)); }
191
192	/* Extract from an array REGBUF containing the (raw) register state
193	a function return value of type TYPE, and copy that, in virtual format,
194	into VALBUF. */
195
196	#define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
197	bcopy (REGBUF, VALBUF, TYPE_LENGTH (TYPE))
198
199	/* Write into appropriate registers a function return value
200	of type TYPE, given in virtual format. */
201
202	#define STORE_RETURN_VALUE(TYPE,VALBUF) \
203	write_register_bytes (0, VALBUF, TYPE_LENGTH (TYPE))
204
205	/* Extract from an array REGBUF containing the (raw) register state
206	the address in which a function should return its structure value,
207	as a CORE_ADDR (or an expression that can be used as one). */
208
209	#define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) ((int )(REGBUF))
210
211	/* Describe the pointer in each stack frame to the previous stack frame
212	(its caller).
213
214	FRAME_CHAIN takes a frame's nominal address
215	and produces the frame's chain-pointer.
216
217	FRAME_CHAIN_COMBINE takes the chain pointer and the frame's nominal address
218	and produces the nominal address of the caller frame.
219
220	However, if FRAME_CHAIN_VALID returns zero,
221	it means the given frame is the outermost one and has no caller.
222	In that case, FRAME_CHAIN_COMBINE is not used. */
223
224	/* In the case of the Tahoe, the frame's nominal address is the FP value,
225	and it points to the old FP */
226
227	#define FRAME_CHAIN(thisframe) \
228	(outside_startup_file ((thisframe)->pc) ? \
229	read_memory_integer ((thisframe)->frame, 4) :\
230	0)
231
232	#define FRAME_CHAIN_VALID(chain, thisframe) \
233	(chain != 0 && (outside_startup_file (FRAME_SAVED_PC (thisframe))))
234
235	#define FRAME_CHAIN_COMBINE(chain, thisframe) (chain)
236
237	/* Define other aspects of the stack frame. */
238
239	/* Saved PC */
240
241	#define FRAME_SAVED_PC(FRAME) (read_memory_integer ((FRAME)->frame - 8, 4))
242
243	/* In most of GDB, getting the args address is too important to
244	just say "I don't know". */
245
246	#define FRAME_ARGS_ADDRESS(fi) ((fi)->frame+4)
247
248	/* Address to use as an anchor for finding local variables */
249
250	#define FRAME_LOCALS_ADDRESS(fi) ((fi)->frame)
251
252	/* Return number of args passed to a frame.
253	Can return -1, meaning no way to tell. */
254
255	#define FRAME_NUM_ARGS(numargs, fi) \
256	{ numargs = ((0xffff & read_memory_integer(((fi)->frame-4),4)) - 4) >> 2; }
257
258	/* Return number of bytes at start of arglist that are not really args. */
259
260	#define FRAME_ARGS_SKIP 0
261
262	/* Put here the code to store, into a struct frame_saved_regs,
263	the addresses of the saved registers of frame described by FRAME_INFO.
264	This includes special registers such as pc and fp saved in special
265	ways in the stack frame. sp is even more special:
266	the address we return for it IS the sp for the next frame. */
267
268	#define FRAME_FIND_SAVED_REGS(frame_info, frame_saved_regs) \
269	{ register int regnum; \
270	register int rmask = read_memory_integer ((frame_info)->frame-4, 4) >> 16;\
271	register CORE_ADDR next_addr; \
272	bzero (&frame_saved_regs, sizeof frame_saved_regs); \
273	next_addr = (frame_info)->frame - 8; \
274	for (regnum = 12; regnum >= 0; regnum--, rmask <<= 1) \
275	(frame_saved_regs).regs[regnum] = (rmask & 0x1000) ? (next_addr -= 4) : 0;\
276	(frame_saved_regs).regs[SP_REGNUM] = (frame_info)->frame + 4; \
277	(frame_saved_regs).regs[PC_REGNUM] = (frame_info)->frame - 8; \
278	(frame_saved_regs).regs[FP_REGNUM] = (frame_info)->frame; \
279	}
280
281	/* Things needed for making the inferior call functions. */
282
283	/* Push an empty stack frame, to record the current PC, etc. */
284
285	#define PUSH_DUMMY_FRAME \
286	{ register CORE_ADDR sp = read_register (SP_REGNUM); \
287	register int regnum; \
288	printf("PUSH_DUMMY_FRAME\n"); \
289	sp = push_word (sp, read_register (FP_REGNUM)); \
290	write_register (FP_REGNUM, sp); \
291	sp = push_word (sp, 0x1fff0004); /SAVE MASK/ \
292	sp = push_word (sp, read_register (PC_REGNUM)); \
293	for (regnum = 12; regnum >= 0; regnum--) \
294	sp = push_word (sp, read_register (regnum)); \
295	write_register (SP_REGNUM, sp); \
296	}
297
298	/* Discard from the stack the innermost frame, restoring all registers. */
299
300	#define POP_FRAME \
301	{ register CORE_ADDR fp = read_register (FP_REGNUM); \
302	register int regnum; \
303	register int regmask = read_memory_integer (fp-4, 4); \
304	printf("POP_FRAME\n"); \
305	regmask >>= 16; \
306	write_register (SP_REGNUM, fp+4); \
307	write_register (PC_REGNUM, read_memory_integer(fp-8, 4)); \
308	write_register (FP_REGNUM, read_memory_integer(fp, 4)); \
309	fp -= 8; \
310	for (regnum = 12; regnum >= 0; regnum--, regmask <<= 1) \
311	if (regmask & 0x1000) \
312	write_register (regnum, read_memory_integer (fp-=4, 4)); \
313	flush_cached_frames (); \
314	set_current_frame (create_new_frame (read_register (FP_REGNUM), \
315	read_pc ())); }
316
317	/* This sequence of words is the instructions
318	calls #69, @#32323232
319	bpt
320	Note this is 8 bytes. */
321
322	#define CALL_DUMMY {0xbf699f32, 0x32323230}
323
324	/* Start execution at beginning of dummy */
325
326	#define CALL_DUMMY_START_OFFSET 0
327
328	/* Insert the specified number of args and function address
329	into a call sequence of the above form stored at DUMMYNAME. */
330
0c540082	331	#define FIX_CALL_DUMMY(dummyname, pc, fun, nargs, args, valtype, using_gcc) \
cb173f45 JK	332	{ int temp = (int) fun; \
	333	((char ) dummyname + 1) = nargs; \
	334	bcopy(&temp,(char *)dummyname+3,4); }
	335