old-cross-binutils/gdb/tm-vx68.h

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/* Target machine description for VxWorks 68k's, for GDB, the GNU debugger.
Copyright 1986, 1987, 1989, 1991, 1992 Free Software Foundation, Inc.
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Contributed by Cygnus Support.
This file is part of GDB.
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
the Free Software Foundation; either version 2 of the License, or
(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
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#define GDBINIT_FILENAME ".vxgdbinit"
#define DEFAULT_PROMPT "(vxgdb) "
/* Kludge... */
#include "tm-sun3.h"
/* Define this if the C compiler puts an underscore at the front
of external names before giving them to the linker. */
#define NAMES_HAVE_UNDERSCORE
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#undef SAVED_PC_AFTER_CALL
#define SAVED_PC_AFTER_CALL(frame) \
read_memory_integer (read_register (SP_REGNUM), 4)
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/* We have more complex, useful breakpoints on the target. */
#undef DECR_PC_AFTER_BREAK
#define DECR_PC_AFTER_BREAK 0
/* We are guaranteed to have a zero frame pointer at bottom of stack, too. */
#undef FRAME_CHAIN
#undef FRAME_CHAIN_VALID
/* Takes the current frame-struct pointer and returns the chain-pointer
to get to the calling frame.
If our current frame pointer is zero, we're at the top; else read out
the saved FP from memory pointed to by the current FP. */
#define FRAME_CHAIN(thisframe) ((thisframe)->frame? read_memory_integer ((thisframe)->frame, 4): 0)
/* If the chain pointer is zero (either because the saved value fetched
by FRAME_CHAIN was zero, or because the current FP was zero so FRAME_CHAIN
never fetched anything), we are at the top of the stack. */
#define FRAME_CHAIN_VALID(chain, thisframe) (chain != 0)