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/* Copyright (C) 2007 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., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
#include "server.h"
#include "win32-low.h"
#ifndef CONTEXT_FLOATING_POINT
#define CONTEXT_FLOATING_POINT 0
#endif
static void
arm_get_thread_context (win32_thread_info *th, DEBUG_EVENT* current_event)
{
th->context.ContextFlags = \
CONTEXT_FULL | \
CONTEXT_FLOATING_POINT;
GetThreadContext (th->h, &th->context);
}
static void
arm_set_thread_context (win32_thread_info *th, DEBUG_EVENT* current_event)
{
SetThreadContext (th->h, &th->context);
}
#define context_offset(x) ((int)&(((CONTEXT *)NULL)->x))
static const int mappings[] = {
context_offset (R0),
context_offset (R1),
context_offset (R2),
context_offset (R3),
context_offset (R4),
context_offset (R5),
context_offset (R6),
context_offset (R7),
context_offset (R8),
context_offset (R9),
context_offset (R10),
context_offset (R11),
context_offset (R12),
context_offset (Sp),
context_offset (Lr),
context_offset (Pc),
-1, /* f0 */
-1, /* f1 */
-1, /* f2 */
-1, /* f3 */
-1, /* f4 */
-1, /* f5 */
-1, /* f6 */
-1, /* f7 */
-1, /* fps */
context_offset (Psr),
};
#undef context_offset
/* Return a pointer into a CONTEXT field indexed by gdb register number.
Return a pointer to an dummy register holding zero if there is no
corresponding CONTEXT field for the given register number. */
static char *
regptr (CONTEXT* c, int r)
{
if (mappings[r] < 0)
{
static ULONG zero;
/* Always force value to zero, in case the user tried to write
to this register before. */
zero = 0;
return (char *) &zero;
}
else
return (char *) c + mappings[r];
}
/* Fetch register from gdbserver regcache data. */
static void
arm_fetch_inferior_register (win32_thread_info *th, int r)
{
char *context_offset = regptr (&th->context, r);
supply_register (r, context_offset);
}
/* Store a new register value into the thread context of TH. */
static void
arm_store_inferior_register (win32_thread_info *th, int r)
{
collect_register (r, regptr (&th->context, r));
}
/* Correct in either endianness. We do not support Thumb yet. */
static const unsigned long arm_wince_breakpoint = 0xe6000001;
#define arm_wince_breakpoint_len 4
struct win32_target_ops the_low_target = {
sizeof (mappings) / sizeof (mappings[0]),
NULL, /* initial_stuff */
arm_get_thread_context,
arm_set_thread_context,
NULL, /* thread_added */
arm_fetch_inferior_register,
arm_store_inferior_register,
NULL, /* single_step */
(const unsigned char *) &arm_wince_breakpoint,
arm_wince_breakpoint_len,
"arm" /* arch_string */
};
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