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* values.c (value_primitive_field): Account for offset when

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extracting the value of a bitfield.
	From Paul Hilfinger <hilfingr@CS.Berkeley.EDU>.
This commit is contained in:
Peter Schauer 1997-08-09 08:51:41 +00:00
parent 0485d3df51
commit 93e7a07fd7
2 changed files with 16 additions and 7 deletions
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6
gdb/ChangeLog
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@ -1,3 +1,9 @@
Sat Aug 9 01:50:14 1997 Peter Schauer (pes@regent.e-technik.tu-muenchen.de)
* values.c (value_primitive_field): Account for offset when
extracting the value of a bitfield.
From Paul Hilfinger <hilfingr@CS.Berkeley.EDU>.
Fri Aug 8 21:35:44 1997 Mark Alexander <marka@cygnus.com>
start-sanitize-tic80

13
gdb/values.c
View file

@ -1,5 +1,5 @@
/* Low level packing and unpacking of values for GDB, the GNU Debugger.
Copyright 1986, 1987, 1989, 1991, 1993, 1994, 1995, 1996
Copyright 1986, 1987, 1989, 1991, 1993, 1994, 1995, 1996, 1997
Free Software Foundation, Inc.
This file is part of GDB.
@ -761,12 +761,12 @@ value_primitive_field (arg1, offset, fieldno, arg_type)
/* Handle packed fields */
offset += TYPE_FIELD_BITPOS (arg_type, fieldno) / 8;
if (TYPE_FIELD_BITSIZE (arg_type, fieldno))
{
v = value_from_longest (type,
unpack_field_as_long (arg_type,
VALUE_CONTENTS (arg1),
VALUE_CONTENTS (arg1)
+ offset,
fieldno));
VALUE_BITPOS (v) = TYPE_FIELD_BITPOS (arg_type, fieldno) % 8;
VALUE_BITSIZE (v) = TYPE_FIELD_BITSIZE (arg_type, fieldno);
@ -777,14 +777,17 @@ value_primitive_field (arg1, offset, fieldno, arg_type)
if (VALUE_LAZY (arg1))
VALUE_LAZY (v) = 1;
else
memcpy (VALUE_CONTENTS_RAW (v), VALUE_CONTENTS_RAW (arg1) + offset,
memcpy (VALUE_CONTENTS_RAW (v),
VALUE_CONTENTS_RAW (arg1) + offset
+ TYPE_FIELD_BITPOS (arg_type, fieldno) / 8,
TYPE_LENGTH (type));
}
VALUE_LVAL (v) = VALUE_LVAL (arg1);
if (VALUE_LVAL (arg1) == lval_internalvar)
VALUE_LVAL (v) = lval_internalvar_component;
VALUE_ADDRESS (v) = VALUE_ADDRESS (arg1);
VALUE_OFFSET (v) = offset + VALUE_OFFSET (arg1);
VALUE_OFFSET (v) = VALUE_OFFSET (arg1) + offset
+ TYPE_FIELD_BITPOS (arg_type, fieldno) / 8;
return v;
}