Change tui_data_item_window::content to be a unique_xmalloc_ptr

[external/binutils.git] / gdb / dwarf2-frame.c

diff --git a/gdb/dwarf2-frame.c b/gdb/dwarf2-frame.c
index a24235a..7839942 100644 (file)
--- a/gdb/dwarf2-frame.c
+++ b/gdb/dwarf2-frame.c
@@ -40,7 +40,7 @@
 #include "dwarf2loc.h"
 #include "dwarf2-frame-tailcall.h"
 #if GDB_SELF_TEST
-#include "common/selftest.h"
+#include "gdbsupport/selftest.h"
 #include "selftest-arch.h"
 #endif
 
@@ -290,7 +290,7 @@ class dwarf_expr_executor : public dwarf_expr_context
 
   CORE_ADDR get_addr_index (unsigned int index) override
   {
-    invalid ("DW_OP_GNU_addr_index");
+    invalid ("DW_OP_addrx or DW_OP_GNU_addr_index");
   }
 
  private:
@@ -1023,7 +1023,13 @@ dwarf2_frame_cache (struct frame_info *this_frame, void **this_cache)
   /* Save the initialized register set.  */
   fs.initial = fs.regs;
 
-  if (get_frame_func_if_available (this_frame, &entry_pc))
+  /* Fetching the entry pc for THIS_FRAME won't necessarily result
+     in an address that's within the range of FDE locations.  This
+     is due to the possibility of the function occupying non-contiguous
+     ranges.  */
+  if (get_frame_func_if_available (this_frame, &entry_pc)
+      && fde->initial_location <= entry_pc
+      && entry_pc < fde->initial_location + fde->address_range)
     {
       /* Decode the insns in the FDE up to the entry PC.  */
       instr = execute_cfa_program (fde, fde->instructions, fde->end, gdbarch,
@@ -1076,7 +1082,7 @@ dwarf2_frame_cache (struct frame_info *this_frame, void **this_cache)
          return cache;
        }
 
-      throw_exception (ex);
+      throw;
     }
 
   /* Initialize the register state.  */
@@ -1463,7 +1469,9 @@ dwarf2_frame_cfa (struct frame_info *this_frame)
   return get_frame_base (this_frame);
 }
 \f
-const struct objfile_data *dwarf2_frame_objfile_data;
+const struct objfile_key<dwarf2_fde_table,
+                        gdb::noop_deleter<dwarf2_fde_table>>
+  dwarf2_frame_objfile_data;
 
 static unsigned int
 read_1_byte (bfd *abfd, const gdb_byte *buf)
@@ -1487,7 +1495,7 @@ static ULONGEST
 read_initial_length (bfd *abfd, const gdb_byte *buf,
                     unsigned int *bytes_read_ptr)
 {
-  LONGEST result;
+  ULONGEST result;
 
   result = bfd_get_32 (abfd, buf);
   if (result == 0xffffffff)
@@ -1708,13 +1716,11 @@ dwarf2_frame_find_fde (CORE_ADDR *pc, CORE_ADDR *out_offset)
       CORE_ADDR offset;
       CORE_ADDR seek_pc;
 
-      fde_table = ((struct dwarf2_fde_table *)
-                  objfile_data (objfile, dwarf2_frame_objfile_data));
+      fde_table = dwarf2_frame_objfile_data.get (objfile);
       if (fde_table == NULL)
        {
          dwarf2_build_frame_info (objfile);
-         fde_table = ((struct dwarf2_fde_table *)
-                      objfile_data (objfile, dwarf2_frame_objfile_data));
+         fde_table = dwarf2_frame_objfile_data.get (objfile);
        }
       gdb_assert (fde_table != NULL);
 
@@ -1788,7 +1794,7 @@ decode_frame_entry_1 (struct comp_unit *unit, const gdb_byte *start,
 {
   struct gdbarch *gdbarch = get_objfile_arch (unit->objfile);
   const gdb_byte *buf, *end;
-  LONGEST length;
+  ULONGEST length;
   unsigned int bytes_read;
   int dwarf64_p;
   ULONGEST cie_id;
@@ -1799,15 +1805,15 @@ decode_frame_entry_1 (struct comp_unit *unit, const gdb_byte *start,
   buf = start;
   length = read_initial_length (unit->abfd, buf, &bytes_read);
   buf += bytes_read;
-  end = buf + length;
-
-  /* Are we still within the section?  */
-  if (end > unit->dwarf_frame_buffer + unit->dwarf_frame_size)
-    return NULL;
+  end = buf + (size_t) length;
 
   if (length == 0)
     return end;
 
+  /* Are we still within the section?  */
+  if (end <= buf || end > unit->dwarf_frame_buffer + unit->dwarf_frame_size)
+    return NULL;
+
   /* Distinguish between 32 and 64-bit encoded frame info.  */
   dwarf64_p = (bytes_read == 12);
 
@@ -2397,7 +2403,7 @@ dwarf2_build_frame_info (struct objfile *objfile)
       xfree (fde_table.entries);
     }
 
-  set_objfile_data (objfile, dwarf2_frame_objfile_data, fde_table2);
+  dwarf2_frame_objfile_data.set (objfile, fde_table2);
 }
 
 /* Handle 'maintenance show dwarf unwinders'.  */
@@ -2416,7 +2422,6 @@ void
 _initialize_dwarf2_frame (void)
 {
   dwarf2_frame_data = gdbarch_data_register_pre_init (dwarf2_frame_init);
-  dwarf2_frame_objfile_data = register_objfile_data ();
 
   add_setshow_boolean_cmd ("unwinders", class_obscure,
                           &dwarf2_frame_unwinders_enabled_p , _("\