merge from gcc

[deliverable/binutils-gdb.git] / gdb / dummy-frame.c

diff --git a/gdb/dummy-frame.c b/gdb/dummy-frame.c
index 7f3b2a2edc178903aee36950fd0311966ac6a923..3b10c51640b5f86ee0d73318c46f02904ee1987c 100644 (file)
--- a/gdb/dummy-frame.c
+++ b/gdb/dummy-frame.c
@@ -29,6 +29,8 @@
 #include "inferior.h"
 #include "gdb_assert.h"
 #include "frame-unwind.h"
+#include "command.h"
+#include "gdbcmd.h"
 
 static void dummy_frame_this_id (struct frame_info *next_frame,
                                 void **this_prologue_cache,
@@ -97,7 +99,7 @@ find_dummy_frame (CORE_ADDR pc, CORE_ADDR fp)
              FP against the saved SP and FP.  NOTE: If you're trying
              to fix a problem with GDB not correctly finding a dummy
              frame, check the comments that go with FRAME_ALIGN() and
-             SAVE_DUMMY_FRAME_TOS().  */
+             UNWIND_DUMMY_ID().  */
          if (fp != dummyframe->fp && fp != dummyframe->sp)
            continue;
        }
@@ -109,7 +111,7 @@ find_dummy_frame (CORE_ADDR pc, CORE_ADDR fp)
 }
 
 struct regcache *
-generic_find_dummy_frame (CORE_ADDR pc, CORE_ADDR fp)
+deprecated_find_dummy_frame_regcache (CORE_ADDR pc, CORE_ADDR fp)
 {
   struct dummy_frame *dummy = find_dummy_frame (pc, fp);
   if (dummy != NULL)
@@ -121,7 +123,7 @@ generic_find_dummy_frame (CORE_ADDR pc, CORE_ADDR fp)
 char *
 deprecated_generic_find_dummy_frame (CORE_ADDR pc, CORE_ADDR fp)
 {
-  struct regcache *regcache = generic_find_dummy_frame (pc, fp);
+  struct regcache *regcache = deprecated_find_dummy_frame_regcache (pc, fp);
   if (regcache == NULL)
     return NULL;
   return deprecated_grub_regcache_for_registers (regcache);
@@ -149,8 +151,9 @@ generic_pc_in_call_dummy (CORE_ADDR pc, CORE_ADDR sp, CORE_ADDR fp)
    figure out what the real PC (as in the resume address) is BEFORE
    calling this function (Oh, and I'm not even sure that this function
    is called with an decremented PC, the call to pc_in_call_dummy() in
-   that file is conditional on !CALL_DUMMY_BREAKPOINT_OFFSET_P yet
-   generic dummy targets set CALL_DUMMY_BREAKPOINT_OFFSET. True?).  */
+   that file is conditional on
+   !DEPRECATED_CALL_DUMMY_BREAKPOINT_OFFSET_P yet generic dummy
+   targets set DEPRECATED_CALL_DUMMY_BREAKPOINT_OFFSET. True?).  */
 
 int
 pc_in_dummy_frame (CORE_ADDR pc)
@@ -173,14 +176,14 @@ pc_in_dummy_frame (CORE_ADDR pc)
 CORE_ADDR
 deprecated_read_register_dummy (CORE_ADDR pc, CORE_ADDR fp, int regno)
 {
-  struct regcache *dummy_regs = generic_find_dummy_frame (pc, fp);
+  struct regcache *dummy_regs = deprecated_find_dummy_frame_regcache (pc, fp);
 
   if (dummy_regs)
     {
       /* NOTE: cagney/2002-08-12: Replaced a call to
         regcache_raw_read_as_address() with a call to
         regcache_cooked_read_unsigned().  The old, ...as_address
-        function was eventually calling extract_unsigned_integer (via
+        function was eventually calling extract_unsigned_integer (nee
         extract_address) to unpack the registers value.  The below is
         doing an unsigned extract so that it is functionally
         equivalent.  The read needs to be cooked as, otherwise, it
@@ -357,10 +360,6 @@ dummy_frame_this_id (struct frame_info *next_frame,
      just asking for trouble.  */
   if (gdbarch_unwind_dummy_id_p (current_gdbarch))
     {
-      /* Assume call_function_by_hand(), via SAVE_DUMMY_FRAME_TOS,
-        previously saved the dummy frame's ID.  Things only work if
-        the two return the same value.  */
-      gdb_assert (SAVE_DUMMY_FRAME_TOS_P ());
       /* Use an architecture specific method to extract the prev's
         dummy ID from the next frame.  Note that this method uses
         frame_register_unwind to obtain the register values needed to
@@ -388,7 +387,7 @@ dummy_frame_this_id (struct frame_info *next_frame,
     }
   else
     {
-      /* Outch!  We're not trying to find the innermost frame's ID yet
+      /* Ouch!  We're not trying to find the innermost frame's ID yet
         we're trying to unwind to a dummy.  The architecture must
         provide the unwind_dummy_id() method.  Abandon the unwind
         process but only after first warning the user.  */
@@ -409,8 +408,9 @@ static struct frame_unwind dummy_frame_unwind =
 };
 
 const struct frame_unwind *
-dummy_frame_p (CORE_ADDR pc)
+dummy_frame_sniffer (struct frame_info *next_frame)
 {
+  CORE_ADDR pc = frame_pc_unwind (next_frame);
   if (DEPRECATED_PC_IN_CALL_DUMMY_P ()
       ? DEPRECATED_PC_IN_CALL_DUMMY (pc, 0, 0)
       : pc_in_dummy_frame (pc))
@@ -418,3 +418,49 @@ dummy_frame_p (CORE_ADDR pc)
   else
     return NULL;
 }
+
+static void
+fprint_dummy_frames (struct ui_file *file)
+{
+  struct dummy_frame *s;
+  for (s = dummy_frame_stack; s != NULL; s = s->next)
+    {
+      gdb_print_host_address (s, file);
+      fprintf_unfiltered (file, ":");
+      fprintf_unfiltered (file, " pc=0x%s", paddr (s->pc));
+      fprintf_unfiltered (file, " fp=0x%s", paddr (s->fp));
+      fprintf_unfiltered (file, " sp=0x%s", paddr (s->sp));
+      fprintf_unfiltered (file, " top=0x%s", paddr (s->top));
+      fprintf_unfiltered (file, " id=");
+      fprint_frame_id (file, s->id);
+      fprintf_unfiltered (file, " call_lo=0x%s", paddr (s->call_lo));
+      fprintf_unfiltered (file, " call_hi=0x%s", paddr (s->call_hi));
+      fprintf_unfiltered (file, "\n");
+    }
+}
+
+static void
+maintenance_print_dummy_frames (char *args, int from_tty)
+{
+  if (args == NULL)
+    fprint_dummy_frames (gdb_stdout);
+  else
+    {
+      struct ui_file *file = gdb_fopen (args, "w");
+      if (file == NULL)
+       perror_with_name ("maintenance print dummy-frames");
+      fprint_dummy_frames (file);    
+      ui_file_delete (file);
+    }
+}
+
+extern void _initialize_dummy_frame (void);
+
+void
+_initialize_dummy_frame (void)
+{
+  add_cmd ("dummy-frames", class_maintenance, maintenance_print_dummy_frames,
+          "Print the contents of the internal dummy-frame stack.",
+          &maintenanceprintlist);
+
+}