/* Find a variable's value in memory, for GDB, the GNU debugger.
Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994,
- 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004 Free Software
- Foundation, Inc.
+ 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005 Free
+ Software Foundation, Inc.
This file is part of GDB.
reg_val = allocate_value (register_type (current_gdbarch, regnum));
- /* Convert raw data to virtual format if necessary. */
-
- if (DEPRECATED_REGISTER_CONVERTIBLE (regnum))
- {
- DEPRECATED_REGISTER_CONVERT_TO_VIRTUAL (regnum, register_type (current_gdbarch, regnum),
- raw_buffer, VALUE_CONTENTS_RAW (reg_val));
- }
- else if (DEPRECATED_REGISTER_RAW_SIZE (regnum) == DEPRECATED_REGISTER_VIRTUAL_SIZE (regnum))
- memcpy (VALUE_CONTENTS_RAW (reg_val), raw_buffer,
- DEPRECATED_REGISTER_RAW_SIZE (regnum));
- else
- internal_error (__FILE__, __LINE__,
- "Register \"%s\" (%d) has conflicting raw (%d) and virtual (%d) size",
- REGISTER_NAME (regnum),
- regnum,
- DEPRECATED_REGISTER_RAW_SIZE (regnum),
- DEPRECATED_REGISTER_VIRTUAL_SIZE (regnum));
+ memcpy (value_contents_raw (reg_val), raw_buffer,
+ register_size (current_gdbarch, regnum));
VALUE_LVAL (reg_val) = lval;
VALUE_ADDRESS (reg_val) = addr;
- VALUE_REGNO (reg_val) = regnum;
- VALUE_OPTIMIZED_OUT (reg_val) = optim;
+ VALUE_REGNUM (reg_val) = regnum;
+ set_value_optimized_out (reg_val, optim);
+ VALUE_FRAME_ID (reg_val) = get_frame_id (frame);
return reg_val;
}
v = allocate_value (type);
VALUE_LVAL (v) = lval_memory; /* The most likely possibility. */
- VALUE_BFD_SECTION (v) = SYMBOL_BFD_SECTION (var);
len = TYPE_LENGTH (type);
{
case LOC_CONST:
/* Put the constant back in target format. */
- store_signed_integer (VALUE_CONTENTS_RAW (v), len,
+ store_signed_integer (value_contents_raw (v), len,
(LONGEST) SYMBOL_VALUE (var));
VALUE_LVAL (v) = not_lval;
return v;
CORE_ADDR addr
= symbol_overlayed_address (SYMBOL_VALUE_ADDRESS (var),
SYMBOL_BFD_SECTION (var));
- store_typed_address (VALUE_CONTENTS_RAW (v), type, addr);
+ store_typed_address (value_contents_raw (v), type, addr);
}
else
- store_typed_address (VALUE_CONTENTS_RAW (v), type,
+ store_typed_address (value_contents_raw (v), type,
SYMBOL_VALUE_ADDRESS (var));
VALUE_LVAL (v) = not_lval;
return v;
{
char *bytes_addr;
bytes_addr = SYMBOL_VALUE_BYTES (var);
- memcpy (VALUE_CONTENTS_RAW (v), bytes_addr, len);
+ memcpy (value_contents_raw (v), bytes_addr, len);
VALUE_LVAL (v) = not_lval;
return v;
}
addresses have not been bound by the dynamic loader. Try again when executable is running.");
locaddr = SYMBOL_VALUE_ADDRESS (var);
- loc = value_at (lookup_pointer_type (type), locaddr, NULL);
+ loc = value_at (lookup_pointer_type (type), locaddr);
addr = value_as_address (loc);
}
if (!argref)
return 0;
argref += SYMBOL_VALUE (var);
- ref = value_at (lookup_pointer_type (type), argref, NULL);
+ ref = value_at (lookup_pointer_type (type), argref);
addr = value_as_address (ref);
break;
}
case LOC_OPTIMIZED_OUT:
VALUE_LVAL (v) = not_lval;
- VALUE_OPTIMIZED_OUT (v) = 1;
+ set_value_optimized_out (v, 1);
return v;
default:
}
VALUE_ADDRESS (v) = addr;
- VALUE_LAZY (v) = 1;
+ set_value_lazy (v, 1);
return v;
}
struct value *v = allocate_value (type);
CHECK_TYPEDEF (type);
- if (CONVERT_REGISTER_P (regnum, type))
+ if (TYPE_LENGTH (type) == 0)
+ {
+ /* It doesn't matter much what we return for this: since the
+ length is zero, it could be anything. But if allowed to see
+ a zero-length type, the register-finding loop below will set
+ neither mem_stor nor reg_stor, and then report an internal
+ error.
+
+ Zero-length types can legitimately arise from declarations
+ like 'struct {}' (a GCC extension, not valid ISO C). GDB may
+ also create them when it finds bogus debugging information;
+ for example, in GCC 2.95.4 and binutils 2.11.93.0.2, the
+ STABS BINCL->EXCL compression process can create bad type
+ numbers. GDB reads these as TYPE_CODE_UNDEF types, with zero
+ length. (That bug is actually the only known way to get a
+ zero-length value allocated to a register --- which is what
+ it takes to make it here.)
+
+ We'll just attribute the value to the original register. */
+ VALUE_LVAL (v) = lval_register;
+ VALUE_ADDRESS (v) = regnum;
+ VALUE_REGNUM (v) = regnum;
+ }
+ else if (CONVERT_REGISTER_P (regnum, type))
{
/* The ISA/ABI need to something weird when obtaining the
specified value from this register. It might need to
the corresponding [integer] type (see Alpha). The assumption
is that REGISTER_TO_VALUE populates the entire value
including the location. */
- REGISTER_TO_VALUE (frame, regnum, type, VALUE_CONTENTS_RAW (v));
- VALUE_LVAL (v) = lval_reg_frame_relative;
+ REGISTER_TO_VALUE (frame, regnum, type, value_contents_raw (v));
+ VALUE_LVAL (v) = lval_register;
VALUE_FRAME_ID (v) = get_frame_id (frame);
- VALUE_FRAME_REGNUM (v) = regnum;
+ VALUE_REGNUM (v) = regnum;
}
else
{
/* Copy all of the data out, whereever it may be. */
for (local_regnum = regnum, value_bytes_copied = 0;
value_bytes_copied < len;
- (value_bytes_copied += DEPRECATED_REGISTER_RAW_SIZE (local_regnum),
+ (value_bytes_copied += register_size (current_gdbarch, local_regnum),
++local_regnum))
{
int realnum;
{
mem_stor++;
+ /* FIXME: cagney/2004-11-12: I think this is trying to
+ check that the stored registers are adjacent in
+ memory. It isn't doing a good job? */
mem_tracking = (mem_tracking
&& (regnum == local_regnum
|| addr == last_addr));
last_addr = addr;
}
- /* FIXME: cagney/2003-06-04: Shouldn't this always use
- lval_reg_frame_relative? If it doesn't and the register's
- location changes (say after a resume) then this value is
- going to have wrong information. */
- if ((reg_stor && mem_stor)
- || (mem_stor && !mem_tracking))
- /* Mixed storage; all of the hassle we just went through was
- for some good purpose. */
- {
- VALUE_LVAL (v) = lval_reg_frame_relative;
- VALUE_FRAME_ID (v) = get_frame_id (frame);
- VALUE_FRAME_REGNUM (v) = regnum;
- }
- else if (mem_stor)
+ if (mem_tracking && mem_stor && !reg_stor)
{
VALUE_LVAL (v) = lval_memory;
VALUE_ADDRESS (v) = first_addr;
}
- else if (reg_stor)
+ else
{
VALUE_LVAL (v) = lval_register;
- VALUE_ADDRESS (v) = first_addr;
- VALUE_REGNO (v) = first_realnum;
+ VALUE_FRAME_ID (v) = get_frame_id (frame);
+ VALUE_REGNUM (v) = regnum;
}
- else
- internal_error (__FILE__, __LINE__,
- "value_from_register: Value not stored anywhere!");
- VALUE_OPTIMIZED_OUT (v) = optimized;
+ set_value_optimized_out (v, optimized);
/* Any structure stored in more than one register will always be
an integral number of registers. Otherwise, you need to do
some fiddling with the last register copied here for little
endian machines. */
if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG
- && len < DEPRECATED_REGISTER_RAW_SIZE (regnum))
+ && len < register_size (current_gdbarch, regnum))
/* Big-endian, and we want less than full size. */
- VALUE_OFFSET (v) = DEPRECATED_REGISTER_RAW_SIZE (regnum) - len;
+ set_value_offset (v, register_size (current_gdbarch, regnum) - len);
else
- VALUE_OFFSET (v) = 0;
- memcpy (VALUE_CONTENTS_RAW (v), value_bytes + VALUE_OFFSET (v), len);
+ set_value_offset (v, 0);
+ memcpy (value_contents_raw (v), value_bytes + value_offset (v), len);
}
return v;
}
if (lazy_value == 0)
error ("Address of \"%s\" is unknown.", SYMBOL_PRINT_NAME (var));
- if (VALUE_LAZY (lazy_value)
+ if (value_lazy (lazy_value)
|| TYPE_CODE (type) == TYPE_CODE_FUNC)
{
struct value *val;
addr = VALUE_ADDRESS (lazy_value);
val = value_from_pointer (lookup_pointer_type (type), addr);
- VALUE_BFD_SECTION (val) = VALUE_BFD_SECTION (lazy_value);
return val;
}
switch (VALUE_LVAL (lazy_value))
{
case lval_register:
- gdb_assert (REGISTER_NAME (VALUE_REGNO (lazy_value)) != NULL
- && *REGISTER_NAME (VALUE_REGNO (lazy_value)) != '\0');
+ gdb_assert (REGISTER_NAME (VALUE_REGNUM (lazy_value)) != NULL
+ && *REGISTER_NAME (VALUE_REGNUM (lazy_value)) != '\0');
error("Address requested for identifier "
"\"%s\" which is in register $%s",
SYMBOL_PRINT_NAME (var),
- REGISTER_NAME (VALUE_REGNO (lazy_value)));
- break;
-
- case lval_reg_frame_relative:
- gdb_assert (REGISTER_NAME (VALUE_FRAME_REGNUM (lazy_value)) != NULL
- && *REGISTER_NAME (VALUE_FRAME_REGNUM (lazy_value)) != '\0');
- error("Address requested for identifier "
- "\"%s\" which is in frame register $%s",
- SYMBOL_PRINT_NAME (var),
- REGISTER_NAME (VALUE_FRAME_REGNUM (lazy_value)));
+ REGISTER_NAME (VALUE_REGNUM (lazy_value)));
break;
default:
projects / binutils-gdb.git / blobdiff