From 6dc134122f43d3607284c0e372e239321b4ab7fb Mon Sep 17 00:00:00 2001
From: Pedro Alves <palves@redhat.com>
Date: Mon, 3 Sep 2007 22:24:24 +0000
Subject: [PATCH] 	* arm-tdep.h (arm_skip_stub): Declare. 	*
 arm-wince-tdep.c: Don't include "solib-svr4.h".  Include 	"gdbcore.h". 
 (arm_pe_skip_trampoline_code): New function. 	(arm_wince_init_abi): Register
 arm_pe_skip_trampoline_code as 	gdbarch_skip_trampoline_code callback.
 	* Makefile.in (arm-wince-tdep.o): Update dependencies.

---
 gdb/ChangeLog        | 10 ++++++++++
 gdb/Makefile.in      |  4 ++--
 gdb/arm-tdep.h       |  1 +
 gdb/arm-wince-tdep.c | 42 ++++++++++++++++++++++++++++++++++++++++--
 4 files changed, 53 insertions(+), 4 deletions(-)

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 2e9817e81ec..1ca6d284695 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,13 @@
+2007-09-03  Pedro Alves  <pedro_alves@portugalmail.pt>
+
+	* arm-tdep.h (arm_skip_stub): Declare.
+	* arm-wince-tdep.c: Don't include "solib-svr4.h".  Include
+	"gdbcore.h".
+	(arm_pe_skip_trampoline_code): New function.
+	(arm_wince_init_abi): Register arm_pe_skip_trampoline_code as
+	gdbarch_skip_trampoline_code callback.
+	* Makefile.in (arm-wince-tdep.o): Update dependencies.
+
 2007-09-03  Daniel Jacobowitz  <dan@codesourcery.com>
 
 	* MAINTAINERS: Move Fred Fish to Past Maintainers.
diff --git a/gdb/Makefile.in b/gdb/Makefile.in
index 95e38bf1da6..a8c7d3737f7 100644
--- a/gdb/Makefile.in
+++ b/gdb/Makefile.in
@@ -1823,8 +1823,8 @@ arm-tdep.o: arm-tdep.c $(defs_h) $(frame_h) $(inferior_h) $(gdbcmd_h) \
 	$(gdb_assert_h) $(bfd_in2_h) $(libcoff_h) $(objfiles_h) \
 	$(dwarf2_frame_h) $(gdbtypes_h) $(prologue_value_h) \
 	$(target_descriptions_h) $(user_regs_h)
-arm-wince-tdep.o: arm-wince-tdep.c $(defs_h) $(osabi_h) $(solib_svr4_h) \
-	$(target_h) $(gdb_string_h) $(arm_tdep_h)
+arm-wince-tdep.o: arm-wince-tdep.c $(defs_h) $(osabi_h) \
+	$(gdbcore_h) $(target_h) $(gdb_string_h) $(arm_tdep_h)
 auxv.o: auxv.c $(defs_h) $(target_h) $(gdbtypes_h) $(command_h) \
 	$(inferior_h) $(valprint_h) $(gdb_assert_h) $(auxv_h) \
 	$(elf_common_h)
diff --git a/gdb/arm-tdep.h b/gdb/arm-tdep.h
index 5ac35ca1745..5fa8b62d382 100644
--- a/gdb/arm-tdep.h
+++ b/gdb/arm-tdep.h
@@ -180,6 +180,7 @@ struct gdbarch_tdep
 #define LOWEST_PC (gdbarch_tdep (current_gdbarch)->lowest_pc)
 #endif
 
+CORE_ADDR arm_skip_stub (struct frame_info *, CORE_ADDR);
 int arm_software_single_step (struct frame_info *);
 
 /* Functions exported from armbsd-tdep.h.  */
diff --git a/gdb/arm-wince-tdep.c b/gdb/arm-wince-tdep.c
index 423589655d2..dd7e3efed5d 100644
--- a/gdb/arm-wince-tdep.c
+++ b/gdb/arm-wince-tdep.c
@@ -20,7 +20,7 @@
 
 #include "defs.h"
 #include "osabi.h"
-#include "solib-svr4.h"
+#include "gdbcore.h"
 #include "target.h"
 
 #include "gdb_string.h"
@@ -34,6 +34,44 @@ static const char arm_wince_thumb_le_breakpoint[] = { 0xfe, 0xdf };
 #define ARM_WINCE_JB_ELEMENT_SIZE	INT_REGISTER_SIZE
 #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)
 {
@@ -54,7 +92,7 @@ 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_gdbarch_skip_trampoline_code (gdbarch, arm_pe_skip_trampoline_code);
 
   /* Single stepping.  */
   set_gdbarch_software_single_step (gdbarch, arm_software_single_step);
-- 
2.30.2