/* Find a variable's value in memory, for GDB, the GNU debugger.
- Copyright 1986, 87, 89, 91, 94, 95, 96, 1998
+ Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
+ 1996, 1997, 1998, 1999, 2000, 2001
Free Software Foundation, Inc.
This file is part of GDB.
#include "gdb_string.h"
#include "floatformat.h"
#include "symfile.h" /* for overlay functions */
+#include "regcache.h"
/* This is used to indicate that we don't know the format of the floating point
number. Typically, this is useful for native ports, where the actual format
{
if (TYPE_CODE (type) != TYPE_CODE_PTR
&& TYPE_CODE (type) != TYPE_CODE_REF)
- internal_error ("findvar.c (extract_typed_address): "
+ internal_error (__FILE__, __LINE__,
+ "extract_typed_address: "
"type is not a pointer or reference");
return POINTER_TO_ADDRESS (type, buf);
{
if (TYPE_CODE (type) != TYPE_CODE_PTR
&& TYPE_CODE (type) != TYPE_CODE_REF)
- internal_error ("findvar.c (store_typed_address): "
+ internal_error (__FILE__, __LINE__,
+ "store_typed_address: "
"type is not a pointer or reference");
ADDRESS_TO_POINTER (type, buf, addr);
-\f
-/* Extract a floating-point number from a target-order byte-stream at ADDR.
- Returns the value as type DOUBLEST.
-
- If the host and target formats agree, we just copy the raw data into the
- appropriate type of variable and return, letting the host increase precision
- as necessary. Otherwise, we call the conversion routine and let it do the
- dirty work. */
-
-DOUBLEST
-extract_floating (void *addr, int len)
-{
- DOUBLEST dretval;
-
- if (len * TARGET_CHAR_BIT == TARGET_FLOAT_BIT)
- {
- if (HOST_FLOAT_FORMAT == TARGET_FLOAT_FORMAT)
- {
- float retval;
-
- memcpy (&retval, addr, sizeof (retval));
- return retval;
- }
- else
- floatformat_to_doublest (TARGET_FLOAT_FORMAT, addr, &dretval);
- }
- else if (len * TARGET_CHAR_BIT == TARGET_DOUBLE_BIT)
- {
- if (HOST_DOUBLE_FORMAT == TARGET_DOUBLE_FORMAT)
- {
- double retval;
-
- memcpy (&retval, addr, sizeof (retval));
- return retval;
- }
- else
- floatformat_to_doublest (TARGET_DOUBLE_FORMAT, addr, &dretval);
- }
- else if (len * TARGET_CHAR_BIT == TARGET_LONG_DOUBLE_BIT)
- {
- if (HOST_LONG_DOUBLE_FORMAT == TARGET_LONG_DOUBLE_FORMAT)
- {
- DOUBLEST retval;
-
- memcpy (&retval, addr, sizeof (retval));
- return retval;
- }
- else
- floatformat_to_doublest (TARGET_LONG_DOUBLE_FORMAT, addr, &dretval);
- }
- else
- {
- error ("Can't deal with a floating point number of %d bytes.", len);
- }
-
- return dretval;
-}
-
-void
-store_floating (void *addr, int len, DOUBLEST val)
-{
- if (len * TARGET_CHAR_BIT == TARGET_FLOAT_BIT)
- {
- if (HOST_FLOAT_FORMAT == TARGET_FLOAT_FORMAT)
- {
- float floatval = val;
-
- memcpy (addr, &floatval, sizeof (floatval));
- }
- else
- floatformat_from_doublest (TARGET_FLOAT_FORMAT, &val, addr);
- }
- else if (len * TARGET_CHAR_BIT == TARGET_DOUBLE_BIT)
- {
- if (HOST_DOUBLE_FORMAT == TARGET_DOUBLE_FORMAT)
- {
- double doubleval = val;
-
- memcpy (addr, &doubleval, sizeof (doubleval));
- }
- else
- floatformat_from_doublest (TARGET_DOUBLE_FORMAT, &val, addr);
- }
- else if (len * TARGET_CHAR_BIT == TARGET_LONG_DOUBLE_BIT)
- {
- if (HOST_LONG_DOUBLE_FORMAT == TARGET_LONG_DOUBLE_FORMAT)
- memcpy (addr, &val, sizeof (val));
- else
- floatformat_from_doublest (TARGET_LONG_DOUBLE_FORMAT, &val, addr);
- }
- else
- {
- error ("Can't deal with a floating point number of %d bytes.", len);
- }
-}
-
/* Return a `value' with the contents of register REGNUM
in its virtual format, with the type specified by
REGISTER_VIRTUAL_TYPE.
Caller will check return value or die! */
value_ptr
-value_of_register (regnum)
- int regnum;
+value_of_register (int regnum)
{
CORE_ADDR addr;
int optim;
register value_ptr reg_val;
- char raw_buffer[MAX_REGISTER_RAW_SIZE];
+ char *raw_buffer = (char*) alloca (MAX_REGISTER_RAW_SIZE);
enum lval_type lval;
get_saved_register (raw_buffer, &optim, &addr,
memcpy (VALUE_CONTENTS_RAW (reg_val), raw_buffer,
REGISTER_RAW_SIZE (regnum));
else
- internal_error ("Register \"%s\" (%d) has conflicting raw (%d) and virtual (%d) size",
+ internal_error (__FILE__, __LINE__,
+ "Register \"%s\" (%d) has conflicting raw (%d) and virtual (%d) size",
REGISTER_NAME (regnum),
regnum,
REGISTER_RAW_SIZE (regnum),
up caring what frame it is being evaluated relative to? SYM must
be non-NULL. */
int
-symbol_read_needs_frame (sym)
- struct symbol *sym;
+symbol_read_needs_frame (struct symbol *sym)
{
switch (SYMBOL_CLASS (sym))
{
If FRAME is NULL, use the selected_frame. */
value_ptr
-read_var_value (var, frame)
- register struct symbol *var;
- struct frame_info *frame;
+read_var_value (register struct symbol *var, struct frame_info *frame)
{
register value_ptr v;
struct type *type = SYMBOL_TYPE (var);
break;
case LOC_INDIRECT:
- /* The import slot does not have a real address in it from the
- dynamic loader (dld.sl on HP-UX), if the target hasn't begun
- execution yet, so check for that. */
- if (!target_has_execution)
- error ("\
+ {
+ /* The import slot does not have a real address in it from the
+ dynamic loader (dld.sl on HP-UX), if the target hasn't
+ begun execution yet, so check for that. */
+ CORE_ADDR locaddr;
+ struct value *loc;
+ if (!target_has_execution)
+ error ("\
Attempt to access variable defined in different shared object or load module when\n\
addresses have not been bound by the dynamic loader. Try again when executable is running.");
- addr = SYMBOL_VALUE_ADDRESS (var);
- addr = read_memory_unsigned_integer
- (addr, TARGET_PTR_BIT / TARGET_CHAR_BIT);
- break;
+ locaddr = SYMBOL_VALUE_ADDRESS (var);
+ loc = value_at (lookup_pointer_type (type), locaddr, NULL);
+ addr = value_as_pointer (loc);
+ }
case LOC_ARG:
if (frame == NULL)
break;
case LOC_REF_ARG:
- if (frame == NULL)
- return 0;
- addr = FRAME_ARGS_ADDRESS (frame);
- if (!addr)
- return 0;
- addr += SYMBOL_VALUE (var);
- addr = read_memory_unsigned_integer
- (addr, TARGET_PTR_BIT / TARGET_CHAR_BIT);
- break;
+ {
+ struct value *ref;
+ CORE_ADDR argref;
+ if (frame == NULL)
+ return 0;
+ argref = FRAME_ARGS_ADDRESS (frame);
+ if (!argref)
+ return 0;
+ argref += SYMBOL_VALUE (var);
+ ref = value_at (lookup_pointer_type (type), argref, NULL);
+ addr = value_as_pointer (ref);
+ break;
+ }
case LOC_LOCAL:
case LOC_LOCAL_ARG:
case LOC_BASEREG:
case LOC_BASEREG_ARG:
- {
- char buf[MAX_REGISTER_RAW_SIZE];
- get_saved_register (buf, NULL, NULL, frame, SYMBOL_BASEREG (var),
- NULL);
- addr = extract_address (buf, REGISTER_RAW_SIZE (SYMBOL_BASEREG (var)));
- addr += SYMBOL_VALUE (var);
- break;
- }
-
case LOC_THREAD_LOCAL_STATIC:
{
- char buf[MAX_REGISTER_RAW_SIZE];
+ value_ptr regval;
- get_saved_register (buf, NULL, NULL, frame, SYMBOL_BASEREG (var),
- NULL);
- addr = extract_address (buf, REGISTER_RAW_SIZE (SYMBOL_BASEREG (var)));
+ regval = value_from_register (lookup_pointer_type (type),
+ SYMBOL_BASEREG (var), frame);
+ if (regval == NULL)
+ error ("Value of base register not available.");
+ addr = value_as_pointer (regval);
addr += SYMBOL_VALUE (var);
break;
}
Caller will check return value or die! */
value_ptr
-value_from_register (type, regnum, frame)
- struct type *type;
- int regnum;
- struct frame_info *frame;
+value_from_register (struct type *type, int regnum, struct frame_info *frame)
{
- char raw_buffer[MAX_REGISTER_RAW_SIZE];
+ char *raw_buffer = (char*) alloca (MAX_REGISTER_RAW_SIZE);
CORE_ADDR addr;
int optim;
value_ptr v = allocate_value (type);
CHECK_TYPEDEF (type);
len = TYPE_LENGTH (type);
- /* Pointers on D10V are really only 16 bits,
- but we lie to gdb elsewhere... */
- if (GDB_TARGET_IS_D10V && TYPE_CODE (type) == TYPE_CODE_PTR)
- len = 2;
-
VALUE_REGNO (v) = regnum;
num_storage_locs = (len > REGISTER_VIRTUAL_SIZE (regnum) ?
VALUE_ADDRESS (v) = first_addr;
}
else
- internal_error ("value_from_register: Value not stored anywhere!");
+ internal_error (__FILE__, __LINE__,
+ "value_from_register: Value not stored anywhere!");
VALUE_OPTIMIZED_OUT (v) = optim;
memcpy (VALUE_CONTENTS_RAW (v), raw_buffer + VALUE_OFFSET (v), len);
}
- if (GDB_TARGET_IS_D10V
- && TYPE_CODE (type) == TYPE_CODE_PTR)
- {
- unsigned long num;
- unsigned short snum;
-
- snum = (unsigned short)
- extract_unsigned_integer (VALUE_CONTENTS_RAW (v), 2);
-
- if (TYPE_TARGET_TYPE (type) /* pointer to function */
- && (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_FUNC))
- num = D10V_MAKE_IADDR (snum);
- else /* pointer to data */
- num = D10V_MAKE_DADDR (snum);
-
- store_address (VALUE_CONTENTS_RAW (v), 4, num);
- }
-
return v;
}
\f
address. */
value_ptr
-locate_var_value (var, frame)
- register struct symbol *var;
- struct frame_info *frame;
+locate_var_value (register struct symbol *var, struct frame_info *frame)
{
CORE_ADDR addr = 0;
struct type *type = SYMBOL_TYPE (var);
projects / deliverable / binutils-gdb.git / blobdiff