[deliverable/binutils-gdb.git] / gdb / findvar.c

/* Find a variable's value in memory, for GDB, the GNU debugger.
   Copyright (C) 1986, 1987 Free Software Foundation, Inc.

GDB is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY.  No author or distributor accepts responsibility to anyone
for the consequences of using it or for whether it serves any
particular purpose or works at all, unless he says so in writing.
Refer to the GDB General Public License for full details.

Everyone is granted permission to copy, modify and redistribute GDB,
but only under the conditions described in the GDB General Public
License.  A copy of this license is supposed to have been given to you
along with GDB so you can know your rights and responsibilities.  It
should be in a file named COPYING.  Among other things, the copyright
notice and this notice must be preserved on all copies.

In other words, go ahead and share GDB, but don't try to stop
anyone else from sharing it farther.  Help stamp out software hoarding!
*/

#include "defs.h"
#include "initialize.h"
#include "param.h"
#include "symtab.h"
#include "frame.h"
#include "value.h"

CORE_ADDR read_register ();

START_FILE
\f
/* Return the address in which frame FRAME's value of register REGNUM
   has been saved in memory.  Or return zero if it has not been saved.
   If REGNUM specifies the SP, the value we return is actually
   the SP value, not an address where it was saved.  */

static CORE_ADDR
find_saved_register (frame, regnum)
     FRAME frame;
     int regnum;
{
  struct frame_info fi;
  struct frame_saved_regs saved_regs;

  register FRAME frame1 = 0;
  register CORE_ADDR addr = 0;

  while (1)
    {
      QUIT;
      fi = get_prev_frame_info (frame1);
      if (fi.frame == 0 || fi.frame == frame)
	break;
      get_frame_saved_regs (&fi, &saved_regs);
      if (saved_regs.regs[regnum])
	addr = saved_regs.regs[regnum];
      frame1 = fi.frame;
    }

  return addr;
}

/* Copy the bytes of register REGNUM, relative to the current stack frame,
   into our memory at MYADDR.
   The number of bytes copied is REGISTER_RAW_SIZE (REGNUM).  */

void
read_relative_register_raw_bytes (regnum, myaddr)
     int regnum;
     char *myaddr;
{
  register CORE_ADDR addr;

  if (regnum == FP_REGNUM)
    {
      bcopy (&selected_frame, myaddr, sizeof (CORE_ADDR));
      return;
    }

  addr = find_saved_register (selected_frame, regnum);

  if (addr)
    {
      if (regnum == SP_REGNUM)
	{
	  CORE_ADDR buffer = addr;
	  bcopy (&buffer, myaddr, sizeof (CORE_ADDR));
	}
      else
	read_memory (addr, myaddr, REGISTER_RAW_SIZE (regnum));
      return;
    }
  read_register_bytes (REGISTER_BYTE (regnum),
		       myaddr, REGISTER_RAW_SIZE (regnum));
}

/* Return a `value' with the contents of register REGNUM
   in its virtual format, with the type specified by
   REGISTER_VIRTUAL_TYPE.  */

value
value_of_register (regnum)
     int regnum;
{
  register CORE_ADDR addr = find_saved_register (selected_frame, regnum);
  register value val;
  char raw_buffer[MAX_REGISTER_RAW_SIZE];
  char virtual_buffer[MAX_REGISTER_VIRTUAL_SIZE];

  if (addr)
    {
      if (regnum == SP_REGNUM)
	return value_from_long (builtin_type_int, addr);
      read_memory (addr, raw_buffer, REGISTER_RAW_SIZE (regnum));
    }
  else
    read_register_bytes (REGISTER_BYTE (regnum), raw_buffer,
			 REGISTER_RAW_SIZE (regnum));

  REGISTER_CONVERT_TO_VIRTUAL (regnum, raw_buffer, virtual_buffer);
  val = allocate_value (REGISTER_VIRTUAL_TYPE (regnum));
  bcopy (virtual_buffer, VALUE_CONTENTS (val), REGISTER_VIRTUAL_SIZE (regnum));
  VALUE_LVAL (val) = addr ? lval_memory : lval_register;
  VALUE_ADDRESS (val) = addr ? addr : REGISTER_BYTE (regnum);
  VALUE_REGNO (val) = regnum;
  return val;
}
\f
/* Low level examining and depositing of registers.

   Note that you must call `fetch_registers' once
   before examining or depositing any registers.  */

char registers[REGISTER_BYTES];

/* Copy LEN bytes of consecutive data from registers
   starting with the REGBYTE'th byte of register data
   into memory at MYADDR.  */

read_register_bytes (regbyte, myaddr, len)
     int regbyte;
     char *myaddr;
     int len;
{
  bcopy (&registers[regbyte], myaddr, len);
}

/* Copy LEN bytes of consecutive data from memory at MYADDR
   into registers starting with the REGBYTE'th byte of register data.  */

write_register_bytes (regbyte, myaddr, len)
     int regbyte;
     char *myaddr;
     int len;
{
  bcopy (myaddr, &registers[regbyte], len);
  if (have_inferior_p ())
    store_inferior_registers (-1);
}

/* Return the contents of register REGNO,
   regarding it as an integer.  */

CORE_ADDR
read_register (regno)
     int regno;
{
  /* This loses when REGISTER_RAW_SIZE (regno) != sizeof (int) */
  return *(int *) &registers[REGISTER_BYTE (regno)];
}

/* Store VALUE in the register number REGNO, regarded as an integer.  */

void
write_register (regno, val)
     int regno, val;
{
  /* This loses when REGISTER_RAW_SIZE (regno) != sizeof (int) */
  *(int *) &registers[REGISTER_BYTE (regno)] = val;

  if (have_inferior_p ())
    store_inferior_registers (regno);
}

/* Record that register REGNO contains VAL.
   This is used when the value is obtained from the inferior or core dump,
   so there is no need to store the value there.  */

void
supply_register (regno, val)
     int regno;
     char *val;
{
  bcopy (val, &registers[REGISTER_BYTE (regno)], REGISTER_RAW_SIZE (regno));
}
\f
/* Given a struct symbol for a variable,
   and a stack frame address, read the value of the variable
   and return a (pointer to a) struct value containing the value.  */

value
read_var_value (var, frame)
     register struct symbol *var;
     FRAME frame;
{
  register value v;

  struct frame_info fi;

  struct type *type = SYMBOL_TYPE (var);
  register CORE_ADDR addr = 0;
  int val = SYMBOL_VALUE (var);
  register int len;

  v = allocate_value (type);
  VALUE_LVAL (v) = lval_memory;	/* The most likely possibility.  */
  len = TYPE_LENGTH (type);

  if (frame == 0) frame = selected_frame;

  switch (SYMBOL_CLASS (var))
    {
    case LOC_CONST:
    case LOC_LABEL:
      bcopy (&val, VALUE_CONTENTS (v), len);
      VALUE_LVAL (v) = not_lval;
      return v;

    case LOC_CONST_BYTES:
      bcopy (val, VALUE_CONTENTS (v), len);
      VALUE_LVAL (v) = not_lval;
      return v;

    case LOC_STATIC:
      addr = val;
      break;

    case LOC_ARG:
      fi = get_frame_info (frame);
      addr = val + FRAME_ARGS_ADDRESS (fi);
      break;

    case LOC_LOCAL:
      fi = get_frame_info (frame);
      addr = val + FRAME_LOCALS_ADDRESS (fi);
      break;

    case LOC_TYPEDEF:
      error ("Cannot look up value of a typedef");

    case LOC_BLOCK:
      VALUE_ADDRESS (v) = BLOCK_START (SYMBOL_BLOCK_VALUE (var));
      return v;

    case LOC_REGISTER:
      {
	char raw_buffer[MAX_REGISTER_RAW_SIZE];
	char virtual_buffer[MAX_REGISTER_VIRTUAL_SIZE];

	VALUE_REGNO (v) = val;

	/* Locate the register's contents in a real register or in core;
	   read the data in raw format.  */

	addr = find_saved_register (frame, val);
	if (addr == 0)
	  {
	    /* Value is really in a register.  */

	    VALUE_LVAL (v) = lval_register;
	    VALUE_ADDRESS (v) = REGISTER_BYTE (val);

	    read_register_bytes (REGISTER_BYTE (val),
				 raw_buffer, REGISTER_RAW_SIZE (val));
	  }
	else
	  {
	    /* Value was in a register that has been saved in memory.  */

	    read_memory (addr, raw_buffer, REGISTER_RAW_SIZE (val));
	    VALUE_ADDRESS (v) = addr;
	  }

	/* Convert the raw contents to virtual contents.
	   (Just copy them if the formats are the same.)  */

	REGISTER_CONVERT_TO_VIRTUAL (val, raw_buffer, virtual_buffer);

	if (REGISTER_CONVERTIBLE (val))
	  {
	    /* When the raw and virtual formats differ, the virtual format
	       corresponds to a specific data type.  If we want that type,
	       copy the data into the value.
	       Otherwise, do a type-conversion.  */

	    if (type != REGISTER_VIRTUAL_TYPE (val))
	      {
		/* eg a variable of type `float' in a 68881 register
		   with raw type `extended' and virtual type `double'.
		   Fetch it as a `double' and then convert to `float'.  */
		v = allocate_value (REGISTER_VIRTUAL_TYPE (val));
		bcopy (virtual_buffer, VALUE_CONTENTS (v), len);
		v = value_cast (type, v);
	      }
	    else
	      bcopy (virtual_buffer, VALUE_CONTENTS (v), len);
	  }
	else
	  {
	    /* Raw and virtual formats are the same for this register.  */

	    union { int i; char c; } test;
	    /* If we want less than the full size, we need to
	       test for a big-endian or little-endian machine.  */
	    test.i = 1;
	    if (test.c != 1 && len < REGISTER_RAW_SIZE (val))
	      {
		/* Big-endian, and we want less than full size.  */
		VALUE_OFFSET (v) = REGISTER_RAW_SIZE (val) - len;
	      }

	    bcopy (virtual_buffer + VALUE_OFFSET (v),
		   VALUE_CONTENTS (v), len);
	  }

	return v;
      }
    }

  read_memory (addr, VALUE_CONTENTS (v), len);
  VALUE_ADDRESS (v) = addr;
  return v;
}
\f
/* Given a struct symbol for a variable,
   and a stack frame address,
   return a (pointer to a) struct value containing the variable's address.  */

value
locate_var_value (var, frame)
     register struct symbol *var;
     FRAME frame;
{
  register CORE_ADDR addr = 0;
  int val = SYMBOL_VALUE (var);
  struct frame_info fi;
  struct type *type = SYMBOL_TYPE (var);

  if (frame == 0) frame = selected_frame;

  switch (SYMBOL_CLASS (var))
    {
    case LOC_CONST:
    case LOC_CONST_BYTES:
      error ("Address requested for identifier \"%s\" which is a constant.",
	     SYMBOL_NAME (var));

    case LOC_REGISTER:
      addr = find_saved_register (frame, val);
      if (addr != 0)
	{
	  union { int i; char c; } test;
	  int len = TYPE_LENGTH (type);
	  /* If var is less than the full size of register, we need to
	     test for a big-endian or little-endian machine.  */
	  test.i = 1;
	  if (test.c != 1 && len < REGISTER_RAW_SIZE (val))
	    /* Big-endian, and we want less than full size.  */
	    addr += REGISTER_RAW_SIZE (val) - len;
	  break;
	}
      error ("Address requested for identifier \"%s\" which is in a register.",
	     SYMBOL_NAME (var));

    case LOC_STATIC:
    case LOC_LABEL:
      addr = val;
      break;

    case LOC_ARG:
      fi = get_frame_info (frame);
      addr = val + FRAME_ARGS_ADDRESS (fi);
      break;

    case LOC_LOCAL:
      fi = get_frame_info (frame);
      addr = val + FRAME_LOCALS_ADDRESS (fi);
      break;

    case LOC_TYPEDEF:
      error ("Address requested for identifier \"%s\" which is a typedef.",
	     SYMBOL_NAME (var));

    case LOC_BLOCK:
      addr = BLOCK_START (SYMBOL_BLOCK_VALUE (var));
      break;
    }

  return value_cast (lookup_pointer_type (type),
		     value_from_long (builtin_type_long, addr));
}

static
initialize ()
{}

END_FILE
Commit	Line	Data
7b4ac7e1	1	/* Find a variable's value in memory, for GDB, the GNU debugger.
	2	Copyright (C) 1986, 1987 Free Software Foundation, Inc.
	3
	4	GDB is distributed in the hope that it will be useful, but WITHOUT ANY
	5	WARRANTY. No author or distributor accepts responsibility to anyone
	6	for the consequences of using it or for whether it serves any
	7	particular purpose or works at all, unless he says so in writing.
	8	Refer to the GDB General Public License for full details.
	9
	10	Everyone is granted permission to copy, modify and redistribute GDB,
	11	but only under the conditions described in the GDB General Public
	12	License. A copy of this license is supposed to have been given to you
	13	along with GDB so you can know your rights and responsibilities. It
	14	should be in a file named COPYING. Among other things, the copyright
	15	notice and this notice must be preserved on all copies.
	16
	17	In other words, go ahead and share GDB, but don't try to stop
	18	anyone else from sharing it farther. Help stamp out software hoarding!
	19	*/
	20
	21	#include "defs.h"
	22	#include "initialize.h"
	23	#include "param.h"
	24	#include "symtab.h"
	25	#include "frame.h"
	26	#include "value.h"
	27
	28	CORE_ADDR read_register ();
	29
	30	START_FILE
	31	\f
	32	/* Return the address in which frame FRAME's value of register REGNUM
	33	has been saved in memory. Or return zero if it has not been saved.
	34	If REGNUM specifies the SP, the value we return is actually
	35	the SP value, not an address where it was saved. */
	36
	37	static CORE_ADDR
	38	find_saved_register (frame, regnum)
	39	FRAME frame;
	40	int regnum;
	41	{
	42	struct frame_info fi;
	43	struct frame_saved_regs saved_regs;
	44
	45	register FRAME frame1 = 0;
	46	register CORE_ADDR addr = 0;
	47
	48	while (1)
	49	{
	50	QUIT;
	51	fi = get_prev_frame_info (frame1);
	52	if (fi.frame == 0 \|\| fi.frame == frame)
	53	break;
	54	get_frame_saved_regs (&fi, &saved_regs);
	55	if (saved_regs.regs[regnum])
	56	addr = saved_regs.regs[regnum];
	57	frame1 = fi.frame;
	58	}
	59
	60	return addr;
	61	}
	62
	63	/* Copy the bytes of register REGNUM, relative to the current stack frame,
	64	into our memory at MYADDR.
65	The number of bytes copied is REGISTER_RAW_SIZE (REGNUM). */
66
67	void
68	read_relative_register_raw_bytes (regnum, myaddr)
69	int regnum;
70	char *myaddr;
71	{
72	register CORE_ADDR addr;
73
74	if (regnum == FP_REGNUM)
75	{
76	bcopy (&selected_frame, myaddr, sizeof (CORE_ADDR));
77	return;
78	}
79
80	addr = find_saved_register (selected_frame, regnum);
81
82	if (addr)
83	{
84	if (regnum == SP_REGNUM)
85	{
86	CORE_ADDR buffer = addr;
87	bcopy (&buffer, myaddr, sizeof (CORE_ADDR));
88	}
89	else
90	read_memory (addr, myaddr, REGISTER_RAW_SIZE (regnum));
91	return;
92	}
93	read_register_bytes (REGISTER_BYTE (regnum),
94	myaddr, REGISTER_RAW_SIZE (regnum));
95	}
96
97	/* Return a `value' with the contents of register REGNUM
98	in its virtual format, with the type specified by
99	REGISTER_VIRTUAL_TYPE. */
100
101	value
102	value_of_register (regnum)
103	int regnum;
104	{
105	register CORE_ADDR addr = find_saved_register (selected_frame, regnum);
106	register value val;
107	char raw_buffer[MAX_REGISTER_RAW_SIZE];
108	char virtual_buffer[MAX_REGISTER_VIRTUAL_SIZE];
109
110	if (addr)
111	{
112	if (regnum == SP_REGNUM)
113	return value_from_long (builtin_type_int, addr);
114	read_memory (addr, raw_buffer, REGISTER_RAW_SIZE (regnum));
115	}
116	else
117	read_register_bytes (REGISTER_BYTE (regnum), raw_buffer,
118	REGISTER_RAW_SIZE (regnum));
119
120	REGISTER_CONVERT_TO_VIRTUAL (regnum, raw_buffer, virtual_buffer);
121	val = allocate_value (REGISTER_VIRTUAL_TYPE (regnum));
122	bcopy (virtual_buffer, VALUE_CONTENTS (val), REGISTER_VIRTUAL_SIZE (regnum));
123	VALUE_LVAL (val) = addr ? lval_memory : lval_register;
124	VALUE_ADDRESS (val) = addr ? addr : REGISTER_BYTE (regnum);
125	VALUE_REGNO (val) = regnum;
126	return val;
127	}
128	\f
129	/* Low level examining and depositing of registers.
130
131	Note that you must call `fetch_registers' once
132	before examining or depositing any registers. */
133
134	char registers[REGISTER_BYTES];
135
136	/* Copy LEN bytes of consecutive data from registers
137	starting with the REGBYTE'th byte of register data
138	into memory at MYADDR. */
139
140	read_register_bytes (regbyte, myaddr, len)
141	int regbyte;
142	char *myaddr;
143	int len;
144	{
145	bcopy (&registers[regbyte], myaddr, len);
146	}
147
148	/* Copy LEN bytes of consecutive data from memory at MYADDR
149	into registers starting with the REGBYTE'th byte of register data. */
150
151	write_register_bytes (regbyte, myaddr, len)
152	int regbyte;
153	char *myaddr;
154	int len;
155	{
156	bcopy (myaddr, &registers[regbyte], len);
157	if (have_inferior_p ())
158	store_inferior_registers (-1);
159	}
160
161	/* Return the contents of register REGNO,
162	regarding it as an integer. */
163
164	CORE_ADDR
165	read_register (regno)
166	int regno;
167	{
168	/* This loses when REGISTER_RAW_SIZE (regno) != sizeof (int) */
169	return (int ) &registers[REGISTER_BYTE (regno)];
170	}
171
172	/* Store VALUE in the register number REGNO, regarded as an integer. */
173
174	void
175	write_register (regno, val)
176	int regno, val;
177	{
178	/* This loses when REGISTER_RAW_SIZE (regno) != sizeof (int) */
179	(int ) &registers[REGISTER_BYTE (regno)] = val;
180
181	if (have_inferior_p ())
182	store_inferior_registers (regno);
183	}
184
185	/* Record that register REGNO contains VAL.
186	This is used when the value is obtained from the inferior or core dump,
187	so there is no need to store the value there. */
188
189	void
190	supply_register (regno, val)
191	int regno;
192	char *val;
193	{
194	bcopy (val, &registers[REGISTER_BYTE (regno)], REGISTER_RAW_SIZE (regno));
195	}
196	\f
197	/* Given a struct symbol for a variable,
198	and a stack frame address, read the value of the variable
199	and return a (pointer to a) struct value containing the value. */
200
201	value
202	read_var_value (var, frame)
203	register struct symbol *var;
204	FRAME frame;
205	{
206	register value v;
207
208	struct frame_info fi;
209
210	struct type *type = SYMBOL_TYPE (var);
211	register CORE_ADDR addr = 0;
212	int val = SYMBOL_VALUE (var);
213	register int len;
214
7b4ac7e1	215	v = allocate_value (type);
	216	VALUE_LVAL (v) = lval_memory; /* The most likely possibility. */
	217	len = TYPE_LENGTH (type);
	218
	219	if (frame == 0) frame = selected_frame;
	220
	221	switch (SYMBOL_CLASS (var))
	222	{
	223	case LOC_CONST:
	224	case LOC_LABEL:
	225	bcopy (&val, VALUE_CONTENTS (v), len);
	226	VALUE_LVAL (v) = not_lval;
	227	return v;
	228
	229	case LOC_CONST_BYTES:
	230	bcopy (val, VALUE_CONTENTS (v), len);
	231	VALUE_LVAL (v) = not_lval;
	232	return v;
	233
	234	case LOC_STATIC:
	235	addr = val;
	236	break;
	237
	238	case LOC_ARG:
	239	fi = get_frame_info (frame);
	240	addr = val + FRAME_ARGS_ADDRESS (fi);
	241	break;
	242
	243	case LOC_LOCAL:
	244	fi = get_frame_info (frame);
	245	addr = val + FRAME_LOCALS_ADDRESS (fi);
	246	break;
	247
	248	case LOC_TYPEDEF:
	249	error ("Cannot look up value of a typedef");
	250
	251	case LOC_BLOCK:
	252	VALUE_ADDRESS (v) = BLOCK_START (SYMBOL_BLOCK_VALUE (var));
	253	return v;
	254
	255	case LOC_REGISTER:
	256	{
	257	char raw_buffer[MAX_REGISTER_RAW_SIZE];
	258	char virtual_buffer[MAX_REGISTER_VIRTUAL_SIZE];
	259
	260	VALUE_REGNO (v) = val;
	261
	262	/* Locate the register's contents in a real register or in core;
	263	read the data in raw format. */
	264
	265	addr = find_saved_register (frame, val);
	266	if (addr == 0)
	267	{
	268	/* Value is really in a register. */
	269
	270	VALUE_LVAL (v) = lval_register;
	271	VALUE_ADDRESS (v) = REGISTER_BYTE (val);
	272
	273	read_register_bytes (REGISTER_BYTE (val),
	274	raw_buffer, REGISTER_RAW_SIZE (val));
	275	}
	276	else
	277	{
	278	/* Value was in a register that has been saved in memory. */
279
280	read_memory (addr, raw_buffer, REGISTER_RAW_SIZE (val));
281	VALUE_ADDRESS (v) = addr;
282	}
283
284	/* Convert the raw contents to virtual contents.
285	(Just copy them if the formats are the same.) */
286
287	REGISTER_CONVERT_TO_VIRTUAL (val, raw_buffer, virtual_buffer);
288
289	if (REGISTER_CONVERTIBLE (val))
290	{
291	/* When the raw and virtual formats differ, the virtual format
292	corresponds to a specific data type. If we want that type,
293	copy the data into the value.
294	Otherwise, do a type-conversion. */
295
296	if (type != REGISTER_VIRTUAL_TYPE (val))
297	{
298	/* eg a variable of type `float' in a 68881 register
299	with raw type `extended' and virtual type `double'.
300	Fetch it as a `double' and then convert to `float'. */
301	v = allocate_value (REGISTER_VIRTUAL_TYPE (val));
302	bcopy (virtual_buffer, VALUE_CONTENTS (v), len);
303	v = value_cast (type, v);
304	}
305	else
306	bcopy (virtual_buffer, VALUE_CONTENTS (v), len);
307	}
308	else
309	{
310	/* Raw and virtual formats are the same for this register. */
311
312	union { int i; char c; } test;
313	/* If we want less than the full size, we need to
314	test for a big-endian or little-endian machine. */
315	test.i = 1;
316	if (test.c != 1 && len < REGISTER_RAW_SIZE (val))
317	{
318	/* Big-endian, and we want less than full size. */
319	VALUE_OFFSET (v) = REGISTER_RAW_SIZE (val) - len;
320	}
321
322	bcopy (virtual_buffer + VALUE_OFFSET (v),
323	VALUE_CONTENTS (v), len);
324	}
325
326	return v;
327	}
328	}
329
330	read_memory (addr, VALUE_CONTENTS (v), len);
331	VALUE_ADDRESS (v) = addr;
332	return v;
333	}
334	\f
335	/* Given a struct symbol for a variable,
336	and a stack frame address,
337	return a (pointer to a) struct value containing the variable's address. */
338
339	value
340	locate_var_value (var, frame)
341	register struct symbol *var;
342	FRAME frame;
343	{
344	register CORE_ADDR addr = 0;
345	int val = SYMBOL_VALUE (var);
346	struct frame_info fi;
3bf57d21	347	struct type *type = SYMBOL_TYPE (var);
7b4ac7e1	348
	349	if (frame == 0) frame = selected_frame;
	350
	351	switch (SYMBOL_CLASS (var))
	352	{
	353	case LOC_CONST:
	354	case LOC_CONST_BYTES:
	355	error ("Address requested for identifier \"%s\" which is a constant.",
	356	SYMBOL_NAME (var));
	357
	358	case LOC_REGISTER:
	359	addr = find_saved_register (frame, val);
	360	if (addr != 0)
	361	{
	362	union { int i; char c; } test;
3bf57d21	363	int len = TYPE_LENGTH (type);
7b4ac7e1	364	/* If var is less than the full size of register, we need to
	365	test for a big-endian or little-endian machine. */
	366	test.i = 1;
	367	if (test.c != 1 && len < REGISTER_RAW_SIZE (val))
	368	/* Big-endian, and we want less than full size. */
632ea0cc	369	addr += REGISTER_RAW_SIZE (val) - len;
7b4ac7e1	370	break;
	371	}
	372	error ("Address requested for identifier \"%s\" which is in a register.",
	373	SYMBOL_NAME (var));
	374
	375	case LOC_STATIC:
	376	case LOC_LABEL:
	377	addr = val;
	378	break;
	379
	380	case LOC_ARG:
	381	fi = get_frame_info (frame);
	382	addr = val + FRAME_ARGS_ADDRESS (fi);
	383	break;
	384
	385	case LOC_LOCAL:
	386	fi = get_frame_info (frame);
	387	addr = val + FRAME_LOCALS_ADDRESS (fi);
	388	break;
	389
	390	case LOC_TYPEDEF:
	391	error ("Address requested for identifier \"%s\" which is a typedef.",
	392	SYMBOL_NAME (var));
	393
	394	case LOC_BLOCK:
	395	addr = BLOCK_START (SYMBOL_BLOCK_VALUE (var));
	396	break;
	397	}
	398
3bf57d21	399	return value_cast (lookup_pointer_type (type),
7b4ac7e1	400	value_from_long (builtin_type_long, addr));
	401	}
	402
	403	static
	404	initialize ()
	405	{}
	406
	407	END_FILE