1 files changed, 134 insertions, 0 deletions
diff --git a/gdbserver/win32-arm-low.c b/gdbserver/win32-arm-low.c
new file mode 100644
index 00000000000..619847d10fc
--- /dev/null
+++ b/gdbserver/win32-arm-low.c
@@ -0,0 +1,134 @@
+/* Copyright (C) 2007-2020 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 3 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, see <http://www.gnu.org/licenses/>.  */
+
+#include "server.h"
+#include "win32-low.h"
+
+#ifndef CONTEXT_FLOATING_POINT
+#define CONTEXT_FLOATING_POINT 0
+#endif
+
+/* Defined in auto-generated file reg-arm.c.  */
+void init_registers_arm (void);
+extern const struct target_desc *tdesc_arm;
+
+static void
+arm_get_thread_context (win32_thread_info *th)
+{
+  th->context.ContextFlags = \
+    CONTEXT_FULL | \
+    CONTEXT_FLOATING_POINT;
+
+  GetThreadContext (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 (struct regcache *regcache,
+			     win32_thread_info *th, int r)
+{
+  char *context_offset = regptr (&th->context, r);
+  supply_register (regcache, r, context_offset);
+}
+
+/* Store a new register value into the thread context of TH.  */
+static void
+arm_store_inferior_register (struct regcache *regcache,
+			     win32_thread_info *th, int r)
+{
+  collect_register (regcache, r, regptr (&th->context, r));
+}
+
+static void
+arm_arch_setup (void)
+{
+  init_registers_arm ();
+  win32_tdesc = tdesc_arm;
+}
+
+/* Correct in either endianness.  We do not support Thumb yet.  */
+static const unsigned long arm_wince_breakpoint = 0xe6000010;
+#define arm_wince_breakpoint_len 4
+
+struct win32_target_ops the_low_target = {
+  arm_arch_setup,
+  sizeof (mappings) / sizeof (mappings[0]),
+  NULL, /* initial_stuff */
+  arm_get_thread_context,
+  NULL, /* prepare_to_resume */
+  NULL, /* thread_added */
+  arm_fetch_inferior_register,
+  arm_store_inferior_register,
+  NULL, /* single_step */
+  (const unsigned char *) &arm_wince_breakpoint,
+  arm_wince_breakpoint_len,
+  /* Watchpoint related functions.  See target.h for comments.  */
+  NULL, /* supports_z_point_type */
+  NULL, /* insert_point */
+  NULL, /* remove_point */
+  NULL, /* stopped_by_watchpoint */
+  NULL  /* stopped_data_address */
+};