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2002-02-04 Pierre Muller <muller@ics.u-strasbg.fr>

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Add support for hardware watchpoints on win32 native.
	* win32-nat.c (CONTEXT_DEBUG_DR macro): Add use of
	CONTEXT_DEBUG_REGISTERS.
	(dr variable): New variable. Static array containing a local copy
	of debug registers.
	(debug_registers_changed): New variable.  Reflects when debug registers
	are changed and need to be written to inferior.
	(debug_registers_used): New variable. Reflects when any debug register
	was set, used when new threads are created.
	(cygwin_set_dr, cygwin_set_dr7, cygwin_get_dr6): New functions used by
	i386-nat code.
	(thread_rec): Set dr array if id is the thread of current_event .
	(child_continue, child_resume): Change the debug registers for all
	threads if debug_registers_changed.
	(child_add_thread): Change the debug registers if debug_registers_used.
	* config/i386/cygwin.mh: Add use of i386-nat.o file.
	Link nm.h to new nm-cygwin.h file.
	+ config/i386/nm-cygwin.h: New file. Contains the macros used for use
	of hardware registers.
This commit is contained in:
Pierre Muller 2002-02-04 11:00:10 +00:00
parent 4fa5c2a8c0
commit fa4ba8da6c
5 changed files with 282 additions and 20 deletions
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38
gdb/config/i386/nm-cygwin.h Normal file
View file

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/* Native definitions for Intel x86 running CYGWIN.
Copyright (C) 2002 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
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.
This program is distributed in the hope that it will be useful,
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., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#define NO_PTRACE_H
#define I386_USE_GENERIC_WATCHPOINTS
#include "i386/nm-i386.h"
/* Support for hardware-assisted breakpoints and watchpoints. */
#define I386_DR_LOW_SET_CONTROL(VAL) cygwin_set_dr7 (VAL)
extern void cygwin_set_dr7 (unsigned);
#define I386_DR_LOW_SET_ADDR(N,ADDR) cygwin_set_dr (N,ADDR)
extern void cygwin_set_dr (int, CORE_ADDR);
#define I386_DR_LOW_RESET_ADDR(N)
#define I386_DR_LOW_GET_STATUS() cygwin_get_dr6 ()
extern unsigned cygwin_get_dr6 (void);