[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

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