* arm-tdep.c (arm_analyze_load_stack_chk_guard): Avoid build break

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

diff --git a/gdb/rs6000-tdep.c b/gdb/rs6000-tdep.c
index cd5135ed7cefa4cac8c13115158d6b20991eab36..9832b5bb3fdfb9a55c407b6c1cd7136ad142bd25 100644 (file)
--- a/gdb/rs6000-tdep.c
+++ b/gdb/rs6000-tdep.c
@@ -2090,12 +2090,12 @@ static CORE_ADDR
 rs6000_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR pc)
 {
   struct rs6000_framedata frame;
-  CORE_ADDR limit_pc, func_addr;
+  CORE_ADDR limit_pc, func_addr, func_end_addr = 0;
 
   /* See if we can determine the end of the prologue via the symbol table.
      If so, then return either PC, or the PC after the prologue, whichever
      is greater.  */
-  if (find_pc_partial_function (pc, NULL, &func_addr, NULL))
+  if (find_pc_partial_function (pc, NULL, &func_addr, &func_end_addr))
     {
       CORE_ADDR post_prologue_pc
        = skip_prologue_using_sal (gdbarch, func_addr);
@@ -2113,6 +2113,11 @@ rs6000_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR pc)
   if (limit_pc == 0)
     limit_pc = pc + 100;          /* Magic.  */
 
+  /* Do not allow limit_pc to be past the function end, if we know
+     where that end is...  */
+  if (func_end_addr && limit_pc > func_end_addr)
+    limit_pc = func_end_addr;
+
   pc = skip_prologue (gdbarch, pc, limit_pc, &frame);
   return pc;
 }
@@ -4183,6 +4188,16 @@ powerpc_set_vector_abi (char *args, int from_tty,
     internal_error (__FILE__, __LINE__, _("could not update architecture"));
 }
 
+/* Show the current setting of the exact watchpoints flag.  */
+
+static void
+show_powerpc_exact_watchpoints (struct ui_file *file, int from_tty,
+                               struct cmd_list_element *c,
+                               const char *value)
+{
+  fprintf_filtered (file, _("Use of exact watchpoints is %s.\n"), value);
+}
+
 /* Initialization code.  */
 
 /* -Wmissing-prototypes */
@@ -4240,4 +4255,17 @@ _initialize_rs6000_tdep (void)
                        _("Show the vector ABI."),
                        NULL, powerpc_set_vector_abi, NULL,
                        &setpowerpccmdlist, &showpowerpccmdlist);
+
+  add_setshow_boolean_cmd ("exact-watchpoints", class_support,
+                          &target_exact_watchpoints,
+                          _("\
+Set whether to use just one debug register for watchpoints on scalars."),
+                          _("\
+Show whether to use just one debug register for watchpoints on scalars."),
+                          _("\
+If true, GDB will use only one debug register when watching a variable of\n\
+scalar type, thus assuming that the variable is accessed through the address\n\
+of its first byte."),
+                          NULL, show_powerpc_exact_watchpoints,
+                          &setpowerpccmdlist, &showpowerpccmdlist);
 }