linux low: Make the arch code free arch_process_info

[deliverable/binutils-gdb.git] / gdb / gdbserver / win32-arm-low.c

diff --git a/gdb/gdbserver/win32-arm-low.c b/gdb/gdbserver/win32-arm-low.c
index 08c5a0945e4080b28c029ecd6f617269c590d9e2..45a919b107938ceab6ddabd13cc0323ab809c2ca 100644 (file)
--- a/gdb/gdbserver/win32-arm-low.c
+++ b/gdb/gdbserver/win32-arm-low.c
@@ -1,10 +1,10 @@
-/* Copyright (C) 2007 Free Software Foundation, Inc.
+/* Copyright (C) 2007-2017 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
+   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,
@@ -13,19 +13,27 @@
    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.  */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #include "server.h"
 #include "win32-low.h"
 
-/* Fetch register(s) from gdbserver regcache data.  */
+#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
-do_fetch_inferior_registers (win32_thread_info *th, int r)
+arm_get_thread_context (win32_thread_info *th)
 {
-  char *context_offset = regptr (&th->context, r);
-  supply_register (r, context_offset);
+  th->context.ContextFlags = \
+    CONTEXT_FULL | \
+    CONTEXT_FLOATING_POINT;
+
+  GetThreadContext (th->h, &th->context);
 }
 
 #define context_offset(x) ((int)&(((CONTEXT *)NULL)->x))
@@ -59,18 +67,68 @@ static const int mappings[] = {
 };
 #undef context_offset
 
-static const unsigned char arm_wince_le_breakpoint[] =
-  { 0x10, 0x00, 0x00, 0xe6 };
+/* 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 = {
-  mappings,
+  arm_arch_setup,
   sizeof (mappings) / sizeof (mappings[0]),
   NULL, /* initial_stuff */
-  NULL, /* store_debug_registers */
-  NULL, /* load_debug_registers */
-  do_fetch_inferior_registers,
+  arm_get_thread_context,
+  NULL, /* prepare_to_resume */
+  NULL, /* thread_added */
+  arm_fetch_inferior_register,
+  arm_store_inferior_register,
   NULL, /* single_step */
-  arm_wince_le_breakpoint,
-  sizeof (arm_wince_le_breakpoint) / sizeof (arm_wince_le_breakpoint[0]),
-  "arm" /* arch_string */
+  (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 */
 };