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[/] [or1k/] [trunk/] [insight/] [gdb/] [config/] [vax/] [xm-vax.h] - Blame information for rev 1765

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1 578 markom
/* Common definitions to make GDB run on Vaxen under 4.2bsd and Ultrix.
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   Copyright (C) 1986, 1987, 1989, 1992 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., 59 Temple Place - Suite 330,
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   Boston, MA 02111-1307, USA.  */
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#define HOST_BYTE_ORDER LITTLE_ENDIAN
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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 (0x80000000 - (UPAGES * NBPG))
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/* Kernel is a bit tenacious about sharing text segments, disallowing bpts.  */
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#define ONE_PROCESS_WRITETEXT
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/* Interface definitions for kernel debugger KDB.  */
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/* Map machine fault codes into signal numbers.
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   First subtract 0, divide by 4, then index in a table.
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   Faults for which the entry in this table is 0
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   are not handled by KDB; the program's own trap handler
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   gets to handle then.  */
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#define FAULT_CODE_ORIGIN 0
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#define FAULT_CODE_UNITS 4
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#define FAULT_TABLE    \
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{ 0, SIGKILL, SIGSEGV, 0, 0, 0, 0, 0, \
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  0, 0, SIGTRAP, SIGTRAP, 0, 0, 0, 0, \
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  0, 0, 0, 0, 0, 0, 0, 0}
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/* Start running with a stack stretching from BEG to END.
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   BEG and END should be symbols meaningful to the assembler.
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   This is used only for kdb.  */
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#define INIT_STACK(beg, end)  \
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{ asm (".globl end");         \
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  asm ("movl $ end, sp");      \
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  asm ("clrl fp"); }
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/* Push the frame pointer register on the stack.  */
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#define PUSH_FRAME_PTR        \
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  asm ("pushl fp");
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/* Copy the top-of-stack to the frame pointer register.  */
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#define POP_FRAME_PTR  \
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  asm ("movl (sp), fp");
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/* After KDB is entered by a fault, push all registers
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   that GDB thinks about (all NUM_REGS of them),
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   so that they appear in order of ascending GDB register number.
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   The fault code will be on the stack beyond the last register.  */
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#define PUSH_REGISTERS        \
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{ asm ("pushl 8(sp)");        \
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  asm ("pushl 8(sp)");        \
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  asm ("pushal 0x14(sp)");    \
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  asm ("pushr $037777"); }
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/* Assuming the registers (including processor status) have been
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   pushed on the stack in order of ascending GDB register number,
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   restore them and return to the address in the saved PC register.  */
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#define POP_REGISTERS      \
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{ asm ("popr $037777");    \
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  asm ("subl2 $8,(sp)");   \
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  asm ("movl (sp),sp");    \
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  asm ("rei"); }

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