2009-07-01 Tristan Gingold <gingold@adacore.com>

[deliverable/binutils-gdb.git] / gdb / arm-wince-tdep.c

diff --git a/gdb/arm-wince-tdep.c b/gdb/arm-wince-tdep.c
index 7ec5b15d0f513a2a76de1817fa3434753b37cbeb..ad34fb25c71ff859b30d4af41bd5ee35ce8c75b2 100644 (file)
--- a/gdb/arm-wince-tdep.c
+++ b/gdb/arm-wince-tdep.c
@@ -1,13 +1,13 @@
 /* Target-dependent code for Windows CE running on ARM processors,
    for GDB.
 
-   Copyright (C) 2007 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2008, 2009 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,
@@ -16,14 +16,14 @@
    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 "defs.h"
 #include "osabi.h"
-#include "solib-svr4.h"
+#include "gdbcore.h"
 #include "target.h"
+#include "solib.h"
+#include "solib-target.h"
 
 #include "gdb_string.h"
 
@@ -34,7 +34,45 @@ static const char arm_wince_thumb_le_breakpoint[] = { 0xfe, 0xdf };
 
 /* Description of the longjmp buffer.  */
 #define ARM_WINCE_JB_ELEMENT_SIZE      INT_REGISTER_SIZE
-#define ARM_WINCE_JB_PC                        21
+#define ARM_WINCE_JB_PC                        10
+
+static CORE_ADDR
+arm_pe_skip_trampoline_code (struct frame_info *frame, CORE_ADDR pc)
+{
+  ULONGEST indirect;
+  struct minimal_symbol *indsym;
+  char *symname;
+  CORE_ADDR next_pc;
+
+  /* The format of an ARM DLL trampoline is:
+       ldr  ip, [pc]
+       ldr  pc, [ip]
+       .dw __imp_<func>  */
+
+  if (pc == 0
+      || read_memory_unsigned_integer (pc + 0, 4) != 0xe59fc000
+      || read_memory_unsigned_integer (pc + 4, 4) != 0xe59cf000)
+    return 0;
+
+  indirect = read_memory_unsigned_integer (pc + 8, 4);
+  if (indirect == 0)
+    return 0;
+
+  indsym = lookup_minimal_symbol_by_pc (indirect);
+  if (indsym == NULL)
+    return 0;
+
+  symname = SYMBOL_LINKAGE_NAME (indsym);
+  if (symname == NULL || strncmp (symname, "__imp_", 6) != 0)
+    return 0;
+
+  next_pc = read_memory_unsigned_integer (indirect, 4);
+  if (next_pc != 0)
+    return next_pc;
+
+  /* Check with the default arm gdbarch_skip_trampoline.  */
+  return arm_skip_stub (frame, pc);
+}
 
 static void
 arm_wince_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
@@ -56,7 +94,8 @@ arm_wince_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
   set_gdbarch_char_signed (gdbarch, 1);
 
   /* Shared library handling.  */
-  set_gdbarch_skip_trampoline_code (gdbarch, find_solib_trampoline_target);
+  set_solib_ops (gdbarch, &solib_target_so_ops);
+  set_gdbarch_skip_trampoline_code (gdbarch, arm_pe_skip_trampoline_code);
 
   /* Single stepping.  */
   set_gdbarch_software_single_step (gdbarch, arm_software_single_step);