Use memmove to copy overlap memory.

[deliverable/binutils-gdb.git] / gdb / rs6000-tdep.c

diff --git a/gdb/rs6000-tdep.c b/gdb/rs6000-tdep.c
index d21e87bc9666702411836f1c1ff32703c063df84..09c7f8ff9c4fdadb95720c54efe4aa8de4d33948 100644 (file)
--- a/gdb/rs6000-tdep.c
+++ b/gdb/rs6000-tdep.c
@@ -1,8 +1,8 @@
 /* Target-dependent code for GDB, the GNU debugger.
 
    Copyright (C) 1986, 1987, 1989, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
-   1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
-   Free Software Foundation, Inc.
+   1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
+   2010 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -66,6 +66,7 @@
 #include "features/rs6000/powerpc-vsx32.c"
 #include "features/rs6000/powerpc-403.c"
 #include "features/rs6000/powerpc-403gc.c"
+#include "features/rs6000/powerpc-405.c"
 #include "features/rs6000/powerpc-505.c"
 #include "features/rs6000/powerpc-601.c"
 #include "features/rs6000/powerpc-602.c"
@@ -1057,6 +1058,15 @@ ppc_displaced_step_fixup (struct gdbarch *gdbarch,
                                    from + offset);
 }
 
+/* Always use hardware single-stepping to execute the
+   displaced instruction.  */
+static int
+ppc_displaced_step_hw_singlestep (struct gdbarch *gdbarch,
+                                 struct displaced_step_closure *closure)
+{
+  return 1;
+}
+
 /* Instruction masks used during single-stepping of atomic sequences.  */
 #define LWARX_MASK 0xfc0007fe
 #define LWARX_INSTRUCTION 0x7c000028
@@ -1074,6 +1084,7 @@ int
 ppc_deal_with_atomic_sequence (struct frame_info *frame)
 {
   struct gdbarch *gdbarch = get_frame_arch (frame);
+  struct address_space *aspace = get_frame_address_space (frame);
   enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
   CORE_ADDR pc = get_frame_pc (frame);
   CORE_ADDR breaks[2] = {-1, -1};
@@ -1147,7 +1158,7 @@ ppc_deal_with_atomic_sequence (struct frame_info *frame)
 
   /* Effectively inserts the breakpoints.  */
   for (index = 0; index <= last_breakpoint; index++)
-    insert_single_step_breakpoint (gdbarch, breaks[index]);
+    insert_single_step_breakpoint (gdbarch, aspace, breaks[index]);
 
   return 1;
 }
@@ -2310,6 +2321,7 @@ rs6000_builtin_type_vec128 (struct gdbarch *gdbarch)
 
         type = union __ppc_builtin_type_vec128 {
             uint128_t uint128;
+            double v2_double[2];
             float v4_float[4];
             int32_t v4_int32[4];
             int16_t v8_int16[8];
@@ -2322,6 +2334,8 @@ rs6000_builtin_type_vec128 (struct gdbarch *gdbarch)
       t = arch_composite_type (gdbarch,
                               "__ppc_builtin_type_vec128", TYPE_CODE_UNION);
       append_composite_type_field (t, "uint128", bt->builtin_uint128);
+      append_composite_type_field (t, "v2_double",
+                                  init_vector_type (bt->builtin_double, 2));
       append_composite_type_field (t, "v4_float",
                                   init_vector_type (bt->builtin_float, 4));
       append_composite_type_field (t, "v4_int32",
@@ -2948,6 +2962,8 @@ static struct variant variants[] =
    bfd_mach_rs6k, &tdesc_rs6000},
   {"403", "IBM PowerPC 403", bfd_arch_powerpc,
    bfd_mach_ppc_403, &tdesc_powerpc_403},
+  {"405", "IBM PowerPC 405", bfd_arch_powerpc,
+   bfd_mach_ppc_405, &tdesc_powerpc_405},
   {"601", "Motorola PowerPC 601", bfd_arch_powerpc,
    bfd_mach_ppc_601, &tdesc_powerpc_601},
   {"602", "Motorola PowerPC 602", bfd_arch_powerpc,
@@ -3357,6 +3373,16 @@ rs6000_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
   int num_pseudoregs = 0;
   int cur_reg;
 
+  /* INFO may refer to a binary that is not of the PowerPC architecture,
+     e.g. when debugging a stand-alone SPE executable on a Cell/B.E. system.
+     In this case, we must not attempt to infer properties of the (PowerPC
+     side) of the target system from properties of that executable.  Trust
+     the target description instead.  */
+  if (info.abfd
+      && bfd_get_arch (info.abfd) != bfd_arch_powerpc
+      && bfd_get_arch (info.abfd) != bfd_arch_rs6000)
+    info.abfd = NULL;
+
   from_xcoff_exec = info.abfd && info.abfd->format == bfd_object &&
     bfd_get_flavour (info.abfd) == bfd_target_xcoff_flavour;
 
@@ -3882,6 +3908,8 @@ rs6000_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
   /* Setup displaced stepping.  */
   set_gdbarch_displaced_step_copy_insn (gdbarch,
                                        simple_displaced_step_copy_insn);
+  set_gdbarch_displaced_step_hw_singlestep (gdbarch,
+                                           ppc_displaced_step_hw_singlestep);
   set_gdbarch_displaced_step_fixup (gdbarch, ppc_displaced_step_fixup);
   set_gdbarch_displaced_step_free_closure (gdbarch,
                                           simple_displaced_step_free_closure);
@@ -4038,6 +4066,7 @@ _initialize_rs6000_tdep (void)
   initialize_tdesc_powerpc_vsx32 ();
   initialize_tdesc_powerpc_403 ();
   initialize_tdesc_powerpc_403gc ();
+  initialize_tdesc_powerpc_405 ();
   initialize_tdesc_powerpc_505 ();
   initialize_tdesc_powerpc_601 ();
   initialize_tdesc_powerpc_602 ();