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https://github.com/darlinghq/darling-gdb.git
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133 lines
3.6 KiB
C
133 lines
3.6 KiB
C
/* Copyright (C) 2007-2012 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 3 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, see <http://www.gnu.org/licenses/>. */
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#include "server.h"
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#include "win32-low.h"
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#ifndef CONTEXT_FLOATING_POINT
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#define CONTEXT_FLOATING_POINT 0
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#endif
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/* Defined in auto-generated file reg-arm.c. */
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void init_registers_arm (void);
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static void
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arm_get_thread_context (win32_thread_info *th, DEBUG_EVENT* current_event)
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{
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th->context.ContextFlags = \
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CONTEXT_FULL | \
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CONTEXT_FLOATING_POINT;
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GetThreadContext (th->h, &th->context);
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}
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static void
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arm_set_thread_context (win32_thread_info *th, DEBUG_EVENT* current_event)
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{
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SetThreadContext (th->h, &th->context);
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}
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#define context_offset(x) ((int)&(((CONTEXT *)NULL)->x))
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static const int mappings[] = {
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context_offset (R0),
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context_offset (R1),
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context_offset (R2),
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context_offset (R3),
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context_offset (R4),
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context_offset (R5),
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context_offset (R6),
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context_offset (R7),
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context_offset (R8),
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context_offset (R9),
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context_offset (R10),
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context_offset (R11),
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context_offset (R12),
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context_offset (Sp),
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context_offset (Lr),
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context_offset (Pc),
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-1, /* f0 */
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-1, /* f1 */
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-1, /* f2 */
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-1, /* f3 */
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-1, /* f4 */
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-1, /* f5 */
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-1, /* f6 */
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-1, /* f7 */
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-1, /* fps */
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context_offset (Psr),
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};
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#undef context_offset
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/* Return a pointer into a CONTEXT field indexed by gdb register number.
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Return a pointer to an dummy register holding zero if there is no
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corresponding CONTEXT field for the given register number. */
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static char *
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regptr (CONTEXT* c, int r)
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{
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if (mappings[r] < 0)
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{
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static ULONG zero;
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/* Always force value to zero, in case the user tried to write
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to this register before. */
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zero = 0;
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return (char *) &zero;
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}
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else
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return (char *) c + mappings[r];
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}
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/* Fetch register from gdbserver regcache data. */
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static void
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arm_fetch_inferior_register (struct regcache *regcache,
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win32_thread_info *th, int r)
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{
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char *context_offset = regptr (&th->context, r);
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supply_register (regcache, r, context_offset);
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}
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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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arm_store_inferior_register (struct regcache *regcache,
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win32_thread_info *th, int r)
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{
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collect_register (regcache, r, regptr (&th->context, r));
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}
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/* Correct in either endianness. We do not support Thumb yet. */
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static const unsigned long arm_wince_breakpoint = 0xe6000010;
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#define arm_wince_breakpoint_len 4
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struct win32_target_ops the_low_target = {
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init_registers_arm,
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sizeof (mappings) / sizeof (mappings[0]),
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NULL, /* initial_stuff */
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arm_get_thread_context,
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arm_set_thread_context,
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NULL, /* thread_added */
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arm_fetch_inferior_register,
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arm_store_inferior_register,
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NULL, /* single_step */
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(const unsigned char *) &arm_wince_breakpoint,
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arm_wince_breakpoint_len,
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/* Watchpoint related functions. See target.h for comments. */
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NULL, /* insert_point */
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NULL, /* remove_point */
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NULL, /* stopped_by_watchpoint */
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NULL /* stopped_data_address */
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};
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