56 lines
2.0 KiB
C
56 lines
2.0 KiB
C
/* Macro defintions for i386.
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Copyright (C) 1986, 1987, 1989 Free 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
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/*
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* Changes for 80386 by Pace Willisson (pace@prep.ai.mit.edu)
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* July 1988
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*/
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#define HOST_BYTE_ORDER LITTLE_ENDIAN
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/* I'm running gdb 3.4 under 386/ix 2.0.2, which is a derivative of AT&T's
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Sys V/386 3.2.
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On some machines, gdb crashes when it's starting up while calling the
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vendor's termio tgetent() routine. It always works when run under
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itself (actually, under 3.2, it's not an infinitely recursive bug.)
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After some poking around, it appears that depending on the environment
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size, or whether you're running YP, or the phase of the moon or something,
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the stack is not always long-aligned when main() is called, and tgetent()
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takes strong offense at that. On some machines this bug never appears, but
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on those where it does, it occurs quite reliably. */
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#define ALIGN_STACK_ON_STARTUP
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/* define USG if you are using sys5 /usr/include's */
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#define USG
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#define HAVE_TERMIO
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/* Get rid of any system-imposed stack limit if possible. */
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/* #define SET_STACK_LIMIT_HUGE not in sys5 */
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/* This is the amount to subtract from u.u_ar0
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to get the offset in the core file of the register values. */
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#define KERNEL_U_ADDR 0xe0000000
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#define REGISTER_U_ADDR(addr, blockend, regno) \
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(addr) = i386_register_u_addr ((blockend),(regno));
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