780 lines
22 KiB
C
780 lines
22 KiB
C
/* Find a variable's value in memory, for GDB, the GNU debugger.
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Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994,
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1995, 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005 Free
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Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA. */
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#include "defs.h"
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#include "symtab.h"
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#include "gdbtypes.h"
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#include "frame.h"
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#include "value.h"
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#include "gdbcore.h"
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#include "inferior.h"
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#include "target.h"
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#include "gdb_string.h"
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#include "gdb_assert.h"
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#include "floatformat.h"
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#include "symfile.h" /* for overlay functions */
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#include "regcache.h"
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#include "user-regs.h"
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#include "block.h"
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/* Basic byte-swapping routines. GDB has needed these for a long time...
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All extract a target-format integer at ADDR which is LEN bytes long. */
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#if TARGET_CHAR_BIT != 8 || HOST_CHAR_BIT != 8
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/* 8 bit characters are a pretty safe assumption these days, so we
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assume it throughout all these swapping routines. If we had to deal with
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9 bit characters, we would need to make len be in bits and would have
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to re-write these routines... */
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you lose
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#endif
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LONGEST
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extract_signed_integer (const gdb_byte *addr, int len)
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{
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LONGEST retval;
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const unsigned char *p;
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const unsigned char *startaddr = addr;
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const unsigned char *endaddr = startaddr + len;
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if (len > (int) sizeof (LONGEST))
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error (_("\
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That operation is not available on integers of more than %d bytes."),
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(int) sizeof (LONGEST));
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/* Start at the most significant end of the integer, and work towards
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the least significant. */
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if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
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{
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p = startaddr;
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/* Do the sign extension once at the start. */
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retval = ((LONGEST) * p ^ 0x80) - 0x80;
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for (++p; p < endaddr; ++p)
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retval = (retval << 8) | *p;
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}
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else
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{
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p = endaddr - 1;
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/* Do the sign extension once at the start. */
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retval = ((LONGEST) * p ^ 0x80) - 0x80;
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for (--p; p >= startaddr; --p)
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retval = (retval << 8) | *p;
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}
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return retval;
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}
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ULONGEST
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extract_unsigned_integer (const gdb_byte *addr, int len)
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{
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ULONGEST retval;
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const unsigned char *p;
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const unsigned char *startaddr = addr;
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const unsigned char *endaddr = startaddr + len;
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if (len > (int) sizeof (ULONGEST))
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error (_("\
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That operation is not available on integers of more than %d bytes."),
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(int) sizeof (ULONGEST));
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/* Start at the most significant end of the integer, and work towards
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the least significant. */
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retval = 0;
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if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
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{
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for (p = startaddr; p < endaddr; ++p)
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retval = (retval << 8) | *p;
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}
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else
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{
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for (p = endaddr - 1; p >= startaddr; --p)
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retval = (retval << 8) | *p;
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}
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return retval;
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}
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/* Sometimes a long long unsigned integer can be extracted as a
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LONGEST value. This is done so that we can print these values
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better. If this integer can be converted to a LONGEST, this
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function returns 1 and sets *PVAL. Otherwise it returns 0. */
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int
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extract_long_unsigned_integer (const gdb_byte *addr, int orig_len,
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LONGEST *pval)
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{
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const gdb_byte *p;
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const gdb_byte *first_addr;
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int len;
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len = orig_len;
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if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
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{
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for (p = addr;
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len > (int) sizeof (LONGEST) && p < addr + orig_len;
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p++)
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{
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if (*p == 0)
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len--;
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else
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break;
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}
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first_addr = p;
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}
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else
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{
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first_addr = addr;
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for (p = addr + orig_len - 1;
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len > (int) sizeof (LONGEST) && p >= addr;
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p--)
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{
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if (*p == 0)
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len--;
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else
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break;
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}
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}
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if (len <= (int) sizeof (LONGEST))
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{
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*pval = (LONGEST) extract_unsigned_integer (first_addr,
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sizeof (LONGEST));
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return 1;
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}
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return 0;
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}
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/* Treat the bytes at BUF as a pointer of type TYPE, and return the
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address it represents. */
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CORE_ADDR
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extract_typed_address (const gdb_byte *buf, struct type *type)
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{
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if (TYPE_CODE (type) != TYPE_CODE_PTR
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&& TYPE_CODE (type) != TYPE_CODE_REF)
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internal_error (__FILE__, __LINE__,
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_("extract_typed_address: "
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"type is not a pointer or reference"));
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return POINTER_TO_ADDRESS (type, buf);
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}
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void
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store_signed_integer (gdb_byte *addr, int len, LONGEST val)
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{
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gdb_byte *p;
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gdb_byte *startaddr = addr;
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gdb_byte *endaddr = startaddr + len;
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/* Start at the least significant end of the integer, and work towards
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the most significant. */
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if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
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{
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for (p = endaddr - 1; p >= startaddr; --p)
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{
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*p = val & 0xff;
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val >>= 8;
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}
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}
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else
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{
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for (p = startaddr; p < endaddr; ++p)
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{
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*p = val & 0xff;
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val >>= 8;
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}
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}
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}
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void
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store_unsigned_integer (gdb_byte *addr, int len, ULONGEST val)
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{
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unsigned char *p;
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unsigned char *startaddr = (unsigned char *) addr;
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unsigned char *endaddr = startaddr + len;
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/* Start at the least significant end of the integer, and work towards
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the most significant. */
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if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
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{
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for (p = endaddr - 1; p >= startaddr; --p)
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{
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*p = val & 0xff;
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val >>= 8;
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}
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}
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else
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{
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for (p = startaddr; p < endaddr; ++p)
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{
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*p = val & 0xff;
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val >>= 8;
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}
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}
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}
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/* Store the address ADDR as a pointer of type TYPE at BUF, in target
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form. */
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void
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store_typed_address (gdb_byte *buf, struct type *type, CORE_ADDR addr)
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{
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if (TYPE_CODE (type) != TYPE_CODE_PTR
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&& TYPE_CODE (type) != TYPE_CODE_REF)
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internal_error (__FILE__, __LINE__,
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_("store_typed_address: "
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"type is not a pointer or reference"));
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ADDRESS_TO_POINTER (type, buf, addr);
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}
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/* Return a `value' with the contents of (virtual or cooked) register
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REGNUM as found in the specified FRAME. The register's type is
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determined by register_type().
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NOTE: returns NULL if register value is not available. Caller will
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check return value or die! */
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struct value *
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value_of_register (int regnum, struct frame_info *frame)
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{
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CORE_ADDR addr;
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int optim;
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struct value *reg_val;
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int realnum;
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gdb_byte raw_buffer[MAX_REGISTER_SIZE];
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enum lval_type lval;
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/* User registers lie completely outside of the range of normal
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registers. Catch them early so that the target never sees them. */
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if (regnum >= NUM_REGS + NUM_PSEUDO_REGS)
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return value_of_user_reg (regnum, frame);
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frame_register (frame, regnum, &optim, &lval, &addr, &realnum, raw_buffer);
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/* FIXME: cagney/2002-05-15: This test is just bogus.
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It indicates that the target failed to supply a value for a
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register because it was "not available" at this time. Problem
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is, the target still has the register and so get saved_register()
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may be returning a value saved on the stack. */
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if (register_cached (regnum) < 0)
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return NULL; /* register value not available */
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reg_val = allocate_value (register_type (current_gdbarch, regnum));
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memcpy (value_contents_raw (reg_val), raw_buffer,
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register_size (current_gdbarch, regnum));
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VALUE_LVAL (reg_val) = lval;
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VALUE_ADDRESS (reg_val) = addr;
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VALUE_REGNUM (reg_val) = regnum;
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set_value_optimized_out (reg_val, optim);
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VALUE_FRAME_ID (reg_val) = get_frame_id (frame);
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return reg_val;
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}
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/* Given a pointer of type TYPE in target form in BUF, return the
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address it represents. */
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CORE_ADDR
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unsigned_pointer_to_address (struct type *type, const gdb_byte *buf)
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{
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return extract_unsigned_integer (buf, TYPE_LENGTH (type));
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}
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CORE_ADDR
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signed_pointer_to_address (struct type *type, const gdb_byte *buf)
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{
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return extract_signed_integer (buf, TYPE_LENGTH (type));
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}
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/* Given an address, store it as a pointer of type TYPE in target
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format in BUF. */
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void
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unsigned_address_to_pointer (struct type *type, gdb_byte *buf,
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CORE_ADDR addr)
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{
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store_unsigned_integer (buf, TYPE_LENGTH (type), addr);
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}
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void
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address_to_signed_pointer (struct type *type, gdb_byte *buf, CORE_ADDR addr)
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{
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store_signed_integer (buf, TYPE_LENGTH (type), addr);
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}
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/* Will calling read_var_value or locate_var_value on SYM end
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up caring what frame it is being evaluated relative to? SYM must
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be non-NULL. */
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int
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symbol_read_needs_frame (struct symbol *sym)
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{
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switch (SYMBOL_CLASS (sym))
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{
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/* All cases listed explicitly so that gcc -Wall will detect it if
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we failed to consider one. */
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case LOC_COMPUTED:
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case LOC_COMPUTED_ARG:
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/* FIXME: cagney/2004-01-26: It should be possible to
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unconditionally call the SYMBOL_OPS method when available.
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Unfortunately DWARF 2 stores the frame-base (instead of the
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function) location in a function's symbol. Oops! For the
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moment enable this when/where applicable. */
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return SYMBOL_OPS (sym)->read_needs_frame (sym);
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case LOC_REGISTER:
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case LOC_ARG:
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case LOC_REF_ARG:
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case LOC_REGPARM:
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case LOC_REGPARM_ADDR:
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case LOC_LOCAL:
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case LOC_LOCAL_ARG:
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case LOC_BASEREG:
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case LOC_BASEREG_ARG:
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case LOC_HP_THREAD_LOCAL_STATIC:
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return 1;
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case LOC_UNDEF:
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case LOC_CONST:
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case LOC_STATIC:
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case LOC_INDIRECT:
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case LOC_TYPEDEF:
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case LOC_LABEL:
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/* Getting the address of a label can be done independently of the block,
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even if some *uses* of that address wouldn't work so well without
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the right frame. */
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case LOC_BLOCK:
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case LOC_CONST_BYTES:
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case LOC_UNRESOLVED:
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case LOC_OPTIMIZED_OUT:
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return 0;
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}
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return 1;
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}
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/* Given a struct symbol for a variable,
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and a stack frame id, read the value of the variable
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and return a (pointer to a) struct value containing the value.
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If the variable cannot be found, return a zero pointer.
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If FRAME is NULL, use the deprecated_selected_frame. */
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struct value *
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read_var_value (struct symbol *var, struct frame_info *frame)
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{
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struct value *v;
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struct type *type = SYMBOL_TYPE (var);
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CORE_ADDR addr;
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int len;
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if (SYMBOL_CLASS (var) == LOC_COMPUTED
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|| SYMBOL_CLASS (var) == LOC_COMPUTED_ARG
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|| SYMBOL_CLASS (var) == LOC_REGISTER
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|| SYMBOL_CLASS (var) == LOC_REGPARM)
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/* These cases do not use V. */
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v = NULL;
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else
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{
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v = allocate_value (type);
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VALUE_LVAL (v) = lval_memory; /* The most likely possibility. */
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}
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len = TYPE_LENGTH (type);
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/* FIXME drow/2003-09-06: this call to the selected frame should be
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pushed upwards to the callers. */
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if (frame == NULL)
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frame = deprecated_safe_get_selected_frame ();
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switch (SYMBOL_CLASS (var))
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{
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case LOC_CONST:
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/* Put the constant back in target format. */
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store_signed_integer (value_contents_raw (v), len,
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(LONGEST) SYMBOL_VALUE (var));
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VALUE_LVAL (v) = not_lval;
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return v;
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case LOC_LABEL:
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/* Put the constant back in target format. */
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if (overlay_debugging)
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{
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CORE_ADDR addr
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= symbol_overlayed_address (SYMBOL_VALUE_ADDRESS (var),
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SYMBOL_BFD_SECTION (var));
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store_typed_address (value_contents_raw (v), type, addr);
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}
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else
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store_typed_address (value_contents_raw (v), type,
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SYMBOL_VALUE_ADDRESS (var));
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VALUE_LVAL (v) = not_lval;
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return v;
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case LOC_CONST_BYTES:
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{
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memcpy (value_contents_raw (v), SYMBOL_VALUE_BYTES (var), len);
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VALUE_LVAL (v) = not_lval;
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return v;
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}
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case LOC_STATIC:
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if (overlay_debugging)
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addr = symbol_overlayed_address (SYMBOL_VALUE_ADDRESS (var),
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SYMBOL_BFD_SECTION (var));
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else
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addr = SYMBOL_VALUE_ADDRESS (var);
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break;
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case LOC_INDIRECT:
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{
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/* The import slot does not have a real address in it from the
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dynamic loader (dld.sl on HP-UX), if the target hasn't
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begun execution yet, so check for that. */
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CORE_ADDR locaddr;
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struct value *loc;
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if (!target_has_execution)
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error (_("\
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Attempt to access variable defined in different shared object or load module when\n\
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addresses have not been bound by the dynamic loader. Try again when executable is running."));
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locaddr = SYMBOL_VALUE_ADDRESS (var);
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loc = value_at (lookup_pointer_type (type), locaddr);
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addr = value_as_address (loc);
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break;
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}
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case LOC_ARG:
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if (frame == NULL)
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return 0;
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addr = get_frame_args_address (frame);
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if (!addr)
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return 0;
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addr += SYMBOL_VALUE (var);
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break;
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case LOC_REF_ARG:
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{
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struct value *ref;
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CORE_ADDR argref;
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if (frame == NULL)
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return 0;
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argref = get_frame_args_address (frame);
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if (!argref)
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return 0;
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argref += SYMBOL_VALUE (var);
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ref = value_at (lookup_pointer_type (type), argref);
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addr = value_as_address (ref);
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break;
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}
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case LOC_LOCAL:
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case LOC_LOCAL_ARG:
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if (frame == NULL)
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return 0;
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addr = get_frame_locals_address (frame);
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addr += SYMBOL_VALUE (var);
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break;
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case LOC_BASEREG:
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case LOC_BASEREG_ARG:
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case LOC_HP_THREAD_LOCAL_STATIC:
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{
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struct value *regval;
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regval = value_from_register (lookup_pointer_type (type),
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SYMBOL_BASEREG (var), frame);
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if (regval == NULL)
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error (_("Value of base register not available."));
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addr = value_as_address (regval);
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addr += SYMBOL_VALUE (var);
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break;
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}
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case LOC_TYPEDEF:
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error (_("Cannot look up value of a typedef"));
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break;
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case LOC_BLOCK:
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if (overlay_debugging)
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VALUE_ADDRESS (v) = symbol_overlayed_address
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(BLOCK_START (SYMBOL_BLOCK_VALUE (var)), SYMBOL_BFD_SECTION (var));
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else
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VALUE_ADDRESS (v) = BLOCK_START (SYMBOL_BLOCK_VALUE (var));
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return v;
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case LOC_REGISTER:
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case LOC_REGPARM:
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case LOC_REGPARM_ADDR:
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{
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struct block *b;
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int regno = SYMBOL_VALUE (var);
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struct value *regval;
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if (frame == NULL)
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return 0;
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b = get_frame_block (frame, 0);
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if (SYMBOL_CLASS (var) == LOC_REGPARM_ADDR)
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{
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regval = value_from_register (lookup_pointer_type (type),
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regno,
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frame);
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if (regval == NULL)
|
||
error (_("Value of register variable not available."));
|
||
|
||
addr = value_as_address (regval);
|
||
VALUE_LVAL (v) = lval_memory;
|
||
}
|
||
else
|
||
{
|
||
regval = value_from_register (type, regno, frame);
|
||
|
||
if (regval == NULL)
|
||
error (_("Value of register variable not available."));
|
||
return regval;
|
||
}
|
||
}
|
||
break;
|
||
|
||
case LOC_COMPUTED:
|
||
case LOC_COMPUTED_ARG:
|
||
/* FIXME: cagney/2004-01-26: It should be possible to
|
||
unconditionally call the SYMBOL_OPS method when available.
|
||
Unfortunately DWARF 2 stores the frame-base (instead of the
|
||
function) location in a function's symbol. Oops! For the
|
||
moment enable this when/where applicable. */
|
||
if (frame == 0 && SYMBOL_OPS (var)->read_needs_frame (var))
|
||
return 0;
|
||
return SYMBOL_OPS (var)->read_variable (var, frame);
|
||
|
||
case LOC_UNRESOLVED:
|
||
{
|
||
struct minimal_symbol *msym;
|
||
|
||
msym = lookup_minimal_symbol (DEPRECATED_SYMBOL_NAME (var), NULL, NULL);
|
||
if (msym == NULL)
|
||
return 0;
|
||
if (overlay_debugging)
|
||
addr = symbol_overlayed_address (SYMBOL_VALUE_ADDRESS (msym),
|
||
SYMBOL_BFD_SECTION (msym));
|
||
else
|
||
addr = SYMBOL_VALUE_ADDRESS (msym);
|
||
}
|
||
break;
|
||
|
||
case LOC_OPTIMIZED_OUT:
|
||
VALUE_LVAL (v) = not_lval;
|
||
set_value_optimized_out (v, 1);
|
||
return v;
|
||
|
||
default:
|
||
error (_("Cannot look up value of a botched symbol."));
|
||
break;
|
||
}
|
||
|
||
VALUE_ADDRESS (v) = addr;
|
||
set_value_lazy (v, 1);
|
||
return v;
|
||
}
|
||
|
||
/* Return a value of type TYPE, stored in register REGNUM, in frame
|
||
FRAME.
|
||
|
||
NOTE: returns NULL if register value is not available.
|
||
Caller will check return value or die! */
|
||
|
||
struct value *
|
||
value_from_register (struct type *type, int regnum, struct frame_info *frame)
|
||
{
|
||
struct gdbarch *gdbarch = get_frame_arch (frame);
|
||
struct value *v = allocate_value (type);
|
||
CHECK_TYPEDEF (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
|
||
re-order non-adjacent, starting with REGNUM (see MIPS and
|
||
i386). It might need to convert the [float] register into
|
||
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_register;
|
||
VALUE_FRAME_ID (v) = get_frame_id (frame);
|
||
VALUE_REGNUM (v) = regnum;
|
||
}
|
||
else
|
||
{
|
||
int local_regnum;
|
||
int mem_stor = 0, reg_stor = 0;
|
||
int mem_tracking = 1;
|
||
CORE_ADDR last_addr = 0;
|
||
CORE_ADDR first_addr = 0;
|
||
int first_realnum = regnum;
|
||
int len = TYPE_LENGTH (type);
|
||
int value_bytes_copied;
|
||
int optimized = 0;
|
||
gdb_byte *value_bytes = alloca (len + MAX_REGISTER_SIZE);
|
||
|
||
/* 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 += register_size (current_gdbarch, local_regnum),
|
||
++local_regnum))
|
||
{
|
||
int realnum;
|
||
int optim;
|
||
enum lval_type lval;
|
||
CORE_ADDR addr;
|
||
frame_register (frame, local_regnum, &optim, &lval, &addr,
|
||
&realnum, value_bytes + value_bytes_copied);
|
||
optimized += optim;
|
||
if (register_cached (local_regnum) == -1)
|
||
return NULL; /* register value not available */
|
||
|
||
if (regnum == local_regnum)
|
||
{
|
||
first_addr = addr;
|
||
first_realnum = realnum;
|
||
}
|
||
if (lval == lval_register)
|
||
reg_stor++;
|
||
else
|
||
{
|
||
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;
|
||
}
|
||
|
||
if (mem_tracking && mem_stor && !reg_stor)
|
||
{
|
||
VALUE_LVAL (v) = lval_memory;
|
||
VALUE_ADDRESS (v) = first_addr;
|
||
}
|
||
else
|
||
{
|
||
VALUE_LVAL (v) = lval_register;
|
||
VALUE_FRAME_ID (v) = get_frame_id (frame);
|
||
VALUE_REGNUM (v) = regnum;
|
||
}
|
||
|
||
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 < register_size (current_gdbarch, regnum))
|
||
/* Big-endian, and we want less than full size. */
|
||
set_value_offset (v, register_size (current_gdbarch, regnum) - len);
|
||
else
|
||
set_value_offset (v, 0);
|
||
memcpy (value_contents_raw (v), value_bytes + value_offset (v), len);
|
||
}
|
||
return v;
|
||
}
|
||
|
||
|
||
/* Given a struct symbol for a variable or function,
|
||
and a stack frame id,
|
||
return a (pointer to a) struct value containing the properly typed
|
||
address. */
|
||
|
||
struct value *
|
||
locate_var_value (struct symbol *var, struct frame_info *frame)
|
||
{
|
||
CORE_ADDR addr = 0;
|
||
struct type *type = SYMBOL_TYPE (var);
|
||
struct value *lazy_value;
|
||
|
||
/* Evaluate it first; if the result is a memory address, we're fine.
|
||
Lazy evaluation pays off here. */
|
||
|
||
lazy_value = read_var_value (var, frame);
|
||
if (lazy_value == 0)
|
||
error (_("Address of \"%s\" is unknown."), SYMBOL_PRINT_NAME (var));
|
||
|
||
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);
|
||
return val;
|
||
}
|
||
|
||
/* Not a memory address; check what the problem was. */
|
||
switch (VALUE_LVAL (lazy_value))
|
||
{
|
||
case lval_register:
|
||
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_REGNUM (lazy_value)));
|
||
break;
|
||
|
||
default:
|
||
error (_("Can't take address of \"%s\" which isn't an lvalue."),
|
||
SYMBOL_PRINT_NAME (var));
|
||
break;
|
||
}
|
||
return 0; /* For lint -- never reached */
|
||
}
|