/* Copyright (C) 2007, 2008 Free Software Foundation, Inc.
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/* Copyright (C) 2007, 2008 Free Software Foundation, Inc.
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This file is part of GDB.
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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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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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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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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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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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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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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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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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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "server.h"
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#include "server.h"
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#include "win32-low.h"
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#include "win32-low.h"
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#define FCS_REGNUM 27
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#define FCS_REGNUM 27
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#define FOP_REGNUM 31
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#define FOP_REGNUM 31
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#define FLAG_TRACE_BIT 0x100
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#define FLAG_TRACE_BIT 0x100
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static unsigned dr[8];
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static unsigned dr[8];
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static int debug_registers_changed = 0;
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static int debug_registers_changed = 0;
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static int debug_registers_used = 0;
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static int debug_registers_used = 0;
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static void
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static void
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i386_initial_stuff (void)
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i386_initial_stuff (void)
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{
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{
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memset (&dr, 0, sizeof (dr));
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memset (&dr, 0, sizeof (dr));
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debug_registers_changed = 0;
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debug_registers_changed = 0;
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debug_registers_used = 0;
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debug_registers_used = 0;
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}
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}
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static void
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static void
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i386_get_thread_context (win32_thread_info *th, DEBUG_EVENT* current_event)
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i386_get_thread_context (win32_thread_info *th, DEBUG_EVENT* current_event)
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{
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{
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th->context.ContextFlags = \
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th->context.ContextFlags = \
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CONTEXT_FULL | \
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CONTEXT_FULL | \
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CONTEXT_FLOATING_POINT | \
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CONTEXT_FLOATING_POINT | \
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CONTEXT_EXTENDED_REGISTERS | \
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CONTEXT_EXTENDED_REGISTERS | \
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CONTEXT_DEBUG_REGISTERS;
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CONTEXT_DEBUG_REGISTERS;
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GetThreadContext (th->h, &th->context);
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GetThreadContext (th->h, &th->context);
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debug_registers_changed = 0;
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debug_registers_changed = 0;
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if (th->tid == current_event->dwThreadId)
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if (th->tid == current_event->dwThreadId)
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{
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{
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/* Copy dr values from the current thread. */
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/* Copy dr values from the current thread. */
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dr[0] = th->context.Dr0;
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dr[0] = th->context.Dr0;
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dr[1] = th->context.Dr1;
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dr[1] = th->context.Dr1;
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dr[2] = th->context.Dr2;
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dr[2] = th->context.Dr2;
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dr[3] = th->context.Dr3;
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dr[3] = th->context.Dr3;
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dr[6] = th->context.Dr6;
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dr[6] = th->context.Dr6;
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dr[7] = th->context.Dr7;
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dr[7] = th->context.Dr7;
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}
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}
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}
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}
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static void
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static void
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i386_set_thread_context (win32_thread_info *th, DEBUG_EVENT* current_event)
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i386_set_thread_context (win32_thread_info *th, DEBUG_EVENT* current_event)
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{
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{
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if (debug_registers_changed)
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if (debug_registers_changed)
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{
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{
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th->context.Dr0 = dr[0];
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th->context.Dr0 = dr[0];
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th->context.Dr1 = dr[1];
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th->context.Dr1 = dr[1];
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th->context.Dr2 = dr[2];
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th->context.Dr2 = dr[2];
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th->context.Dr3 = dr[3];
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th->context.Dr3 = dr[3];
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/* th->context.Dr6 = dr[6];
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/* th->context.Dr6 = dr[6];
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FIXME: should we set dr6 also ?? */
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FIXME: should we set dr6 also ?? */
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th->context.Dr7 = dr[7];
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th->context.Dr7 = dr[7];
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}
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}
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SetThreadContext (th->h, &th->context);
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SetThreadContext (th->h, &th->context);
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}
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}
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static void
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static void
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i386_thread_added (win32_thread_info *th)
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i386_thread_added (win32_thread_info *th)
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{
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{
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/* Set the debug registers for the new thread if they are used. */
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/* Set the debug registers for the new thread if they are used. */
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if (debug_registers_used)
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if (debug_registers_used)
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{
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{
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th->context.ContextFlags = CONTEXT_DEBUG_REGISTERS;
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th->context.ContextFlags = CONTEXT_DEBUG_REGISTERS;
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GetThreadContext (th->h, &th->context);
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GetThreadContext (th->h, &th->context);
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th->context.Dr0 = dr[0];
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th->context.Dr0 = dr[0];
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th->context.Dr1 = dr[1];
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th->context.Dr1 = dr[1];
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th->context.Dr2 = dr[2];
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th->context.Dr2 = dr[2];
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th->context.Dr3 = dr[3];
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th->context.Dr3 = dr[3];
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/* th->context.Dr6 = dr[6];
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/* th->context.Dr6 = dr[6];
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FIXME: should we set dr6 also ?? */
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FIXME: should we set dr6 also ?? */
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th->context.Dr7 = dr[7];
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th->context.Dr7 = dr[7];
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SetThreadContext (th->h, &th->context);
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SetThreadContext (th->h, &th->context);
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th->context.ContextFlags = 0;
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th->context.ContextFlags = 0;
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}
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}
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}
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}
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static void
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static void
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i386_single_step (win32_thread_info *th)
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i386_single_step (win32_thread_info *th)
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{
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{
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th->context.EFlags |= FLAG_TRACE_BIT;
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th->context.EFlags |= FLAG_TRACE_BIT;
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}
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}
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/* An array of offset mappings into a Win32 Context structure.
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/* An array of offset mappings into a Win32 Context structure.
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This is a one-to-one mapping which is indexed by gdb's register
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This is a one-to-one mapping which is indexed by gdb's register
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numbers. It retrieves an offset into the context structure where
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numbers. It retrieves an offset into the context structure where
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the 4 byte register is located.
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the 4 byte register is located.
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An offset value of -1 indicates that Win32 does not provide this
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An offset value of -1 indicates that Win32 does not provide this
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register in it's CONTEXT structure. In this case regptr will return
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register in it's CONTEXT structure. In this case regptr will return
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a pointer into a dummy register. */
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a pointer into a dummy register. */
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#define context_offset(x) ((int)&(((CONTEXT *)NULL)->x))
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#define context_offset(x) ((int)&(((CONTEXT *)NULL)->x))
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static const int mappings[] = {
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static const int mappings[] = {
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context_offset (Eax),
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context_offset (Eax),
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context_offset (Ecx),
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context_offset (Ecx),
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context_offset (Edx),
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context_offset (Edx),
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context_offset (Ebx),
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context_offset (Ebx),
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context_offset (Esp),
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context_offset (Esp),
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context_offset (Ebp),
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context_offset (Ebp),
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context_offset (Esi),
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context_offset (Esi),
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context_offset (Edi),
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context_offset (Edi),
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context_offset (Eip),
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context_offset (Eip),
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context_offset (EFlags),
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context_offset (EFlags),
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context_offset (SegCs),
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context_offset (SegCs),
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context_offset (SegSs),
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context_offset (SegSs),
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context_offset (SegDs),
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context_offset (SegDs),
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context_offset (SegEs),
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context_offset (SegEs),
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context_offset (SegFs),
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context_offset (SegFs),
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context_offset (SegGs),
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context_offset (SegGs),
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context_offset (FloatSave.RegisterArea[0 * 10]),
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context_offset (FloatSave.RegisterArea[0 * 10]),
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context_offset (FloatSave.RegisterArea[1 * 10]),
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context_offset (FloatSave.RegisterArea[1 * 10]),
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context_offset (FloatSave.RegisterArea[2 * 10]),
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context_offset (FloatSave.RegisterArea[2 * 10]),
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context_offset (FloatSave.RegisterArea[3 * 10]),
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context_offset (FloatSave.RegisterArea[3 * 10]),
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context_offset (FloatSave.RegisterArea[4 * 10]),
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context_offset (FloatSave.RegisterArea[4 * 10]),
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context_offset (FloatSave.RegisterArea[5 * 10]),
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context_offset (FloatSave.RegisterArea[5 * 10]),
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context_offset (FloatSave.RegisterArea[6 * 10]),
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context_offset (FloatSave.RegisterArea[6 * 10]),
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context_offset (FloatSave.RegisterArea[7 * 10]),
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context_offset (FloatSave.RegisterArea[7 * 10]),
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context_offset (FloatSave.ControlWord),
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context_offset (FloatSave.ControlWord),
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context_offset (FloatSave.StatusWord),
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context_offset (FloatSave.StatusWord),
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context_offset (FloatSave.TagWord),
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context_offset (FloatSave.TagWord),
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context_offset (FloatSave.ErrorSelector),
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context_offset (FloatSave.ErrorSelector),
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context_offset (FloatSave.ErrorOffset),
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context_offset (FloatSave.ErrorOffset),
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context_offset (FloatSave.DataSelector),
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context_offset (FloatSave.DataSelector),
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context_offset (FloatSave.DataOffset),
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context_offset (FloatSave.DataOffset),
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context_offset (FloatSave.ErrorSelector),
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context_offset (FloatSave.ErrorSelector),
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/* XMM0-7 */
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/* XMM0-7 */
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context_offset (ExtendedRegisters[10 * 16]),
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context_offset (ExtendedRegisters[10 * 16]),
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context_offset (ExtendedRegisters[11 * 16]),
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context_offset (ExtendedRegisters[11 * 16]),
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context_offset (ExtendedRegisters[12 * 16]),
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context_offset (ExtendedRegisters[12 * 16]),
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context_offset (ExtendedRegisters[13 * 16]),
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context_offset (ExtendedRegisters[13 * 16]),
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context_offset (ExtendedRegisters[14 * 16]),
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context_offset (ExtendedRegisters[14 * 16]),
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context_offset (ExtendedRegisters[15 * 16]),
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context_offset (ExtendedRegisters[15 * 16]),
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context_offset (ExtendedRegisters[16 * 16]),
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context_offset (ExtendedRegisters[16 * 16]),
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context_offset (ExtendedRegisters[17 * 16]),
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context_offset (ExtendedRegisters[17 * 16]),
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/* MXCSR */
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/* MXCSR */
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context_offset (ExtendedRegisters[24])
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context_offset (ExtendedRegisters[24])
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};
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};
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#undef context_offset
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#undef context_offset
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/* Fetch register from gdbserver regcache data. */
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/* Fetch register from gdbserver regcache data. */
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static void
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static void
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i386_fetch_inferior_register (win32_thread_info *th, int r)
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i386_fetch_inferior_register (win32_thread_info *th, int r)
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{
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{
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char *context_offset = (char *) &th->context + mappings[r];
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char *context_offset = (char *) &th->context + mappings[r];
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long l;
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long l;
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if (r == FCS_REGNUM)
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if (r == FCS_REGNUM)
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{
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{
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l = *((long *) context_offset) & 0xffff;
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l = *((long *) context_offset) & 0xffff;
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supply_register (r, (char *) &l);
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supply_register (r, (char *) &l);
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}
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}
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else if (r == FOP_REGNUM)
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else if (r == FOP_REGNUM)
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{
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{
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l = (*((long *) context_offset) >> 16) & ((1 << 11) - 1);
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l = (*((long *) context_offset) >> 16) & ((1 << 11) - 1);
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supply_register (r, (char *) &l);
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supply_register (r, (char *) &l);
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}
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}
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else
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else
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supply_register (r, context_offset);
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supply_register (r, context_offset);
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}
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}
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/* Store a new register value into the thread context of TH. */
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/* Store a new register value into the thread context of TH. */
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static void
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static void
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i386_store_inferior_register (win32_thread_info *th, int r)
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i386_store_inferior_register (win32_thread_info *th, int r)
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{
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{
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char *context_offset = (char *) &th->context + mappings[r];
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char *context_offset = (char *) &th->context + mappings[r];
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collect_register (r, context_offset);
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collect_register (r, context_offset);
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}
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}
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struct win32_target_ops the_low_target = {
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struct win32_target_ops the_low_target = {
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sizeof (mappings) / sizeof (mappings[0]),
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sizeof (mappings) / sizeof (mappings[0]),
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i386_initial_stuff,
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i386_initial_stuff,
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i386_get_thread_context,
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i386_get_thread_context,
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i386_set_thread_context,
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i386_set_thread_context,
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i386_thread_added,
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i386_thread_added,
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i386_fetch_inferior_register,
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i386_fetch_inferior_register,
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i386_store_inferior_register,
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i386_store_inferior_register,
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i386_single_step,
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i386_single_step,
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NULL, /* breakpoint */
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NULL, /* breakpoint */
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0, /* breakpoint_len */
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0, /* breakpoint_len */
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"i386" /* arch_string */
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"i386" /* arch_string */
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};
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};
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