* 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.

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 2e9817e81ecaee19f66de4fd29fbe11f45c0e78b..1ca6d284695bfa1b4ceb0ea0022cb2a2561e0650 100644 (file)
--- 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 95e38bf1da60bc5370255c9e1736ae916860b051..a8c7d3737f76ad902166a7bfc849fdbee2709e9f 100644 (file)
--- 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 5ac35ca1745605f0a613a21c12bc11f8ddb939a6..5fa8b62d3828055d7e0c765c9f95164435387a1b 100644 (file)
--- 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 423589655d2ebf11f9110c43ab5eca78869b2bbb..dd7e3efed5d703da02d4bee1cfa68452d24f8b20 100644 (file)
--- 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);