2009-03-19 H.J. Lu <hongjiu.lu@intel.com>

	* dwarf.c (dwarf_regnames): Moved before frame_need_space.
	(dwarf_regnames_count): Likewise.
	(frame_need_space): Return int.
	(display_debug_frames): Check invalid registers.

diff --git a/binutils/ChangeLog b/binutils/ChangeLog
index c9423f7..e601e61 100644 (file)
--- a/binutils/ChangeLog
+++ b/binutils/ChangeLog
@@ -1,5 +1,12 @@
 2009-03-19  H.J. Lu  <hongjiu.lu@intel.com>
 
+       * dwarf.c (dwarf_regnames): Moved before frame_need_space.
+       (dwarf_regnames_count): Likewise.
+       (frame_need_space): Return int.
+       (display_debug_frames): Check invalid registers.
+
+2009-03-19  H.J. Lu  <hongjiu.lu@intel.com>
+
        * readelf.c (debug_apply_relocations): Check relocations
        against STT_SECTION symbol.
 

diff --git a/binutils/dwarf.c b/binutils/dwarf.c
index 2eca61e..d5dbb78 100644 (file)
--- a/binutils/dwarf.c
+++ b/binutils/dwarf.c
@@ -3621,17 +3621,27 @@ typedef struct Frame_Chunk
 }
 Frame_Chunk;
 
+static const char *const *dwarf_regnames;
+static unsigned int dwarf_regnames_count;
+
 /* A marker for a col_type that means this column was never referenced
    in the frame info.  */
 #define DW_CFA_unreferenced (-1)
 
-static void
-frame_need_space (Frame_Chunk *fc, int reg)
+/* Return 0 if not more space is needed, 1 if more space is needed,
+   -1 for invalid reg.  */
+
+static int
+frame_need_space (Frame_Chunk *fc, unsigned int reg)
 {
   int prev = fc->ncols;
 
-  if (reg < fc->ncols)
-    return;
+  if (reg < (unsigned int) fc->ncols)
+    return 0;
+
+  if (dwarf_regnames_count
+      && reg > dwarf_regnames_count)
+    return -1;
 
   fc->ncols = reg + 1;
   fc->col_type = xcrealloc (fc->col_type, fc->ncols, sizeof (short int));
@@ -3643,6 +3653,7 @@ frame_need_space (Frame_Chunk *fc, int reg)
       fc->col_offset[prev] = 0;
       prev++;
     }
+  return 1;
 }
 
 static const char *const dwarf_regnames_i386[] =
@@ -3684,9 +3695,6 @@ static const char *const dwarf_regnames_x86_64[] =
   "mxcsr", "fcw", "fsw"
 };
 
-static const char *const *dwarf_regnames;
-static unsigned int dwarf_regnames_count;
-
 void
 init_dwarf_regnames (unsigned int e_machine)
 {
@@ -3816,6 +3824,7 @@ display_debug_frames (struct dwarf_section *section,
   int is_eh = strcmp (section->name, ".eh_frame") == 0;
   unsigned int length_return;
   int max_regs = 0;
+  const char *bad_reg = _("bad register: ");
 
   printf (_("Contents of the %s section:\n"), section->name);
 
@@ -4089,12 +4098,12 @@ display_debug_frames (struct dwarf_section *section,
                  break;
                case DW_CFA_offset:
                  LEB ();
-                 frame_need_space (fc, opa);
-                 fc->col_type[opa] = DW_CFA_undefined;
+                 if (frame_need_space (fc, opa) >= 0)
+                   fc->col_type[opa] = DW_CFA_undefined;
                  break;
                case DW_CFA_restore:
-                 frame_need_space (fc, opa);
-                 fc->col_type[opa] = DW_CFA_undefined;
+                 if (frame_need_space (fc, opa) >= 0)
+                   fc->col_type[opa] = DW_CFA_undefined;
                  break;
                case DW_CFA_set_loc:
                  start += encoded_ptr_size;
@@ -4111,28 +4120,29 @@ display_debug_frames (struct dwarf_section *section,
                case DW_CFA_offset_extended:
                case DW_CFA_val_offset:
                  reg = LEB (); LEB ();
-                 frame_need_space (fc, reg);
-                 fc->col_type[reg] = DW_CFA_undefined;
+                 if (frame_need_space (fc, reg) >= 0)
+                   fc->col_type[reg] = DW_CFA_undefined;
                  break;
                case DW_CFA_restore_extended:
                  reg = LEB ();
                  frame_need_space (fc, reg);
-                 fc->col_type[reg] = DW_CFA_undefined;
+                 if (frame_need_space (fc, reg) >= 0)
+                   fc->col_type[reg] = DW_CFA_undefined;
                  break;
                case DW_CFA_undefined:
                  reg = LEB ();
-                 frame_need_space (fc, reg);
-                 fc->col_type[reg] = DW_CFA_undefined;
+                 if (frame_need_space (fc, reg) >= 0)
+                   fc->col_type[reg] = DW_CFA_undefined;
                  break;
                case DW_CFA_same_value:
                  reg = LEB ();
-                 frame_need_space (fc, reg);
-                 fc->col_type[reg] = DW_CFA_undefined;
+                 if (frame_need_space (fc, reg) >= 0)
+                   fc->col_type[reg] = DW_CFA_undefined;
                  break;
                case DW_CFA_register:
                  reg = LEB (); LEB ();
-                 frame_need_space (fc, reg);
-                 fc->col_type[reg] = DW_CFA_undefined;
+                 if (frame_need_space (fc, reg) >= 0)
+                   fc->col_type[reg] = DW_CFA_undefined;
                  break;
                case DW_CFA_def_cfa:
                  LEB (); LEB ();
@@ -4152,14 +4162,14 @@ display_debug_frames (struct dwarf_section *section,
                  reg = LEB ();
                  tmp = LEB ();
                  start += tmp;
-                 frame_need_space (fc, reg);
-                 fc->col_type[reg] = DW_CFA_undefined;
+                 if (frame_need_space (fc, reg) >= 0)
+                   fc->col_type[reg] = DW_CFA_undefined;
                  break;
                case DW_CFA_offset_extended_sf:
                case DW_CFA_val_offset_sf:
                  reg = LEB (); SLEB ();
-                 frame_need_space (fc, reg);
-                 fc->col_type[reg] = DW_CFA_undefined;
+                 if (frame_need_space (fc, reg) >= 0)
+                   fc->col_type[reg] = DW_CFA_undefined;
                  break;
                case DW_CFA_def_cfa_sf:
                  LEB (); SLEB ();
@@ -4175,9 +4185,9 @@ display_debug_frames (struct dwarf_section *section,
                  break;
                case DW_CFA_GNU_negative_offset_extended:
                  reg = LEB (); LEB ();
-                 frame_need_space (fc, reg);
-                 fc->col_type[reg] = DW_CFA_undefined;
-
+                 if (frame_need_space (fc, reg) >= 0)
+                   fc->col_type[reg] = DW_CFA_undefined;
+                 break;
                default:
                  break;
                }
@@ -4194,6 +4204,7 @@ display_debug_frames (struct dwarf_section *section,
          unsigned long ul, reg, roffs;
          long l, ofs;
          dwarf_vma vma;
+         const char *reg_prefix = "";
 
          op = *start++;
          opa = op & 0x3f;
@@ -4216,18 +4227,31 @@ display_debug_frames (struct dwarf_section *section,
 
            case DW_CFA_offset:
              roffs = LEB ();
-             if (! do_debug_frames_interp)
-               printf ("  DW_CFA_offset: %s at cfa%+ld\n",
-                       regname (opa, 0), roffs * fc->data_factor);
-             fc->col_type[opa] = DW_CFA_offset;
-             fc->col_offset[opa] = roffs * fc->data_factor;
+             if (opa >= (unsigned int) fc->ncols)
+               reg_prefix = bad_reg;
+             if (! do_debug_frames_interp || *reg_prefix != '\0')
+               printf ("  DW_CFA_offset: %s%s at cfa%+ld\n",
+                       reg_prefix, regname (opa, 0),
+                       roffs * fc->data_factor);
+             if (*reg_prefix == '\0')
+               {
+                 fc->col_type[opa] = DW_CFA_offset;
+                 fc->col_offset[opa] = roffs * fc->data_factor;
+               }
              break;
 
            case DW_CFA_restore:
-             if (! do_debug_frames_interp)
-               printf ("  DW_CFA_restore: %s\n", regname (opa, 0));
-             fc->col_type[opa] = cie->col_type[opa];
-             fc->col_offset[opa] = cie->col_offset[opa];
+             if (opa >= (unsigned int) cie->ncols
+                 || opa >= (unsigned int) fc->ncols)
+               reg_prefix = bad_reg;
+             if (! do_debug_frames_interp || *reg_prefix != '\0')
+               printf ("  DW_CFA_restore: %s%s\n",
+                       reg_prefix, regname (opa, 0));
+             if (*reg_prefix == '\0')
+               {
+                 fc->col_type[opa] = cie->col_type[opa];
+                 fc->col_offset[opa] = cie->col_offset[opa];
+               }
              break;
 
            case DW_CFA_set_loc:
@@ -4278,59 +4302,94 @@ display_debug_frames (struct dwarf_section *section,
            case DW_CFA_offset_extended:
              reg = LEB ();
              roffs = LEB ();
-             if (! do_debug_frames_interp)
-               printf ("  DW_CFA_offset_extended: %s at cfa%+ld\n",
-                       regname (reg, 0), roffs * fc->data_factor);
-             fc->col_type[reg] = DW_CFA_offset;
-             fc->col_offset[reg] = roffs * fc->data_factor;
+             if (reg >= (unsigned int) fc->ncols)
+               reg_prefix = bad_reg;
+             if (! do_debug_frames_interp || *reg_prefix != '\0')
+               printf ("  DW_CFA_offset_extended: %s%s at cfa%+ld\n",
+                       reg_prefix, regname (reg, 0),
+                       roffs * fc->data_factor);
+             if (*reg_prefix == '\0')
+               {
+                 fc->col_type[reg] = DW_CFA_offset;
+                 fc->col_offset[reg] = roffs * fc->data_factor;
+               }
              break;
 
            case DW_CFA_val_offset:
              reg = LEB ();
              roffs = LEB ();
-             if (! do_debug_frames_interp)
-               printf ("  DW_CFA_val_offset: %s at cfa%+ld\n",
-                       regname (reg, 0), roffs * fc->data_factor);
-             fc->col_type[reg] = DW_CFA_val_offset;
-             fc->col_offset[reg] = roffs * fc->data_factor;
+             if (reg >= (unsigned int) fc->ncols)
+               reg_prefix = bad_reg;
+             if (! do_debug_frames_interp || *reg_prefix != '\0')
+               printf ("  DW_CFA_val_offset: %s%s at cfa%+ld\n",
+                       reg_prefix, regname (reg, 0),
+                       roffs * fc->data_factor);
+             if (*reg_prefix == '\0')
+               {
+                 fc->col_type[reg] = DW_CFA_val_offset;
+                 fc->col_offset[reg] = roffs * fc->data_factor;
+               }
              break;
 
            case DW_CFA_restore_extended:
              reg = LEB ();
-             if (! do_debug_frames_interp)
-               printf ("  DW_CFA_restore_extended: %s\n",
-                       regname (reg, 0));
-             fc->col_type[reg] = cie->col_type[reg];
-             fc->col_offset[reg] = cie->col_offset[reg];
+             if (reg >= (unsigned int) cie->ncols
+                 || reg >= (unsigned int) fc->ncols)
+               reg_prefix = bad_reg;
+             if (! do_debug_frames_interp || *reg_prefix != '\0')
+               printf ("  DW_CFA_restore_extended: %s%s\n",
+                       reg_prefix, regname (reg, 0));
+             if (*reg_prefix == '\0')
+               {
+                 fc->col_type[reg] = cie->col_type[reg];
+                 fc->col_offset[reg] = cie->col_offset[reg];
+               }
              break;
 
            case DW_CFA_undefined:
              reg = LEB ();
-             if (! do_debug_frames_interp)
-               printf ("  DW_CFA_undefined: %s\n", regname (reg, 0));
-             fc->col_type[reg] = DW_CFA_undefined;
-             fc->col_offset[reg] = 0;
+             if (reg >= (unsigned int) fc->ncols)
+               reg_prefix = bad_reg;
+             if (! do_debug_frames_interp || *reg_prefix != '\0')
+               printf ("  DW_CFA_undefined: %s%s\n",
+                       reg_prefix, regname (reg, 0));
+             if (*reg_prefix == '\0')
+               {
+                 fc->col_type[reg] = DW_CFA_undefined;
+                 fc->col_offset[reg] = 0;
+               }
              break;
 
            case DW_CFA_same_value:
              reg = LEB ();
-             if (! do_debug_frames_interp)
-               printf ("  DW_CFA_same_value: %s\n", regname (reg, 0));
-             fc->col_type[reg] = DW_CFA_same_value;
-             fc->col_offset[reg] = 0;
+             if (reg >= (unsigned int) fc->ncols)
+               reg_prefix = bad_reg;
+             if (! do_debug_frames_interp || *reg_prefix != '\0')
+               printf ("  DW_CFA_same_value: %s%s\n",
+                       reg_prefix, regname (reg, 0));
+             if (*reg_prefix == '\0')
+               {
+                 fc->col_type[reg] = DW_CFA_same_value;
+                 fc->col_offset[reg] = 0;
+               }
              break;
 
            case DW_CFA_register:
              reg = LEB ();
              roffs = LEB ();
-             if (! do_debug_frames_interp)
+             if (reg >= (unsigned int) fc->ncols)
+               reg_prefix = bad_reg;
+             if (! do_debug_frames_interp || *reg_prefix != '\0')
                {
-                 printf ("  DW_CFA_register: %s in ",
-                         regname (reg, 0));
+                 printf ("  DW_CFA_register: %s%s in ",
+                         reg_prefix, regname (reg, 0));
                  puts (regname (roffs, 0));
                }
-             fc->col_type[reg] = DW_CFA_register;
-             fc->col_offset[reg] = roffs;
+             if (*reg_prefix == '\0')
+               {
+                 fc->col_type[reg] = DW_CFA_register;
+                 fc->col_offset[reg] = roffs;
+               }
              break;
 
            case DW_CFA_remember_state:
@@ -4409,53 +4468,69 @@ display_debug_frames (struct dwarf_section *section,
            case DW_CFA_expression:
              reg = LEB ();
              ul = LEB ();
-             if (! do_debug_frames_interp)
+             if (reg >= (unsigned int) fc->ncols)
+               reg_prefix = bad_reg;
+             if (! do_debug_frames_interp || *reg_prefix != '\0')
                {
-                 printf ("  DW_CFA_expression: %s (",
-                         regname (reg, 0));
+                 printf ("  DW_CFA_expression: %s%s (",
+                         reg_prefix, regname (reg, 0));
                  decode_location_expression (start, eh_addr_size,
                                              ul, 0, section);
                  printf (")\n");
                }
-             fc->col_type[reg] = DW_CFA_expression;
+             if (*reg_prefix == '\0')
+               fc->col_type[reg] = DW_CFA_expression;
              start += ul;
              break;
 
            case DW_CFA_val_expression:
              reg = LEB ();
              ul = LEB ();
-             if (! do_debug_frames_interp)
+             if (reg >= (unsigned int) fc->ncols)
+               reg_prefix = bad_reg;
+             if (! do_debug_frames_interp || *reg_prefix != '\0')
                {
-                 printf ("  DW_CFA_val_expression: %s (",
-                         regname (reg, 0));
+                 printf ("  DW_CFA_val_expression: %s%s (",
+                         reg_prefix, regname (reg, 0));
                  decode_location_expression (start, eh_addr_size, ul, 0,
                                              section);
                  printf (")\n");
                }
-             fc->col_type[reg] = DW_CFA_val_expression;
+             if (*reg_prefix == '\0')
+               fc->col_type[reg] = DW_CFA_val_expression;
              start += ul;
              break;
 
            case DW_CFA_offset_extended_sf:
              reg = LEB ();
              l = SLEB ();
-             frame_need_space (fc, reg);
-             if (! do_debug_frames_interp)
-               printf ("  DW_CFA_offset_extended_sf: %s at cfa%+ld\n",
-                       regname (reg, 0), l * fc->data_factor);
-             fc->col_type[reg] = DW_CFA_offset;
-             fc->col_offset[reg] = l * fc->data_factor;
+             if (frame_need_space (fc, reg) < 0)
+               reg_prefix = bad_reg;
+             if (! do_debug_frames_interp || *reg_prefix != '\0')
+               printf ("  DW_CFA_offset_extended_sf: %s%s at cfa%+ld\n",
+                       reg_prefix, regname (reg, 0),
+                       l * fc->data_factor);
+             if (*reg_prefix == '\0')
+               {
+                 fc->col_type[reg] = DW_CFA_offset;
+                 fc->col_offset[reg] = l * fc->data_factor;
+               }
              break;
 
            case DW_CFA_val_offset_sf:
              reg = LEB ();
              l = SLEB ();
-             frame_need_space (fc, reg);
-             if (! do_debug_frames_interp)
-               printf ("  DW_CFA_val_offset_sf: %s at cfa%+ld\n",
-                       regname (reg, 0), l * fc->data_factor);
-             fc->col_type[reg] = DW_CFA_val_offset;
-             fc->col_offset[reg] = l * fc->data_factor;
+             if (frame_need_space (fc, reg) < 0)
+               reg_prefix = bad_reg;
+             if (! do_debug_frames_interp || *reg_prefix != '\0')
+               printf ("  DW_CFA_val_offset_sf: %s%s at cfa%+ld\n",
+                       reg_prefix, regname (reg, 0),
+                       l * fc->data_factor);
+             if (*reg_prefix == '\0')
+               {
+                 fc->col_type[reg] = DW_CFA_val_offset;
+                 fc->col_offset[reg] = l * fc->data_factor;
+               }
              break;
 
            case DW_CFA_def_cfa_sf:
@@ -4500,12 +4575,17 @@ display_debug_frames (struct dwarf_section *section,
            case DW_CFA_GNU_negative_offset_extended:
              reg = LEB ();
              l = - LEB ();
-             frame_need_space (fc, reg);
-             if (! do_debug_frames_interp)
-               printf ("  DW_CFA_GNU_negative_offset_extended: %s at cfa%+ld\n",
-                       regname (reg, 0), l * fc->data_factor);
-             fc->col_type[reg] = DW_CFA_offset;
-             fc->col_offset[reg] = l * fc->data_factor;
+             if (frame_need_space (fc, reg) < 0)
+               reg_prefix = bad_reg;
+             if (! do_debug_frames_interp || *reg_prefix != '\0')
+               printf ("  DW_CFA_GNU_negative_offset_extended: %s%s at cfa%+ld\n",
+                       reg_prefix, regname (reg, 0),
+                       l * fc->data_factor);
+             if (*reg_prefix == '\0')
+               {
+                 fc->col_type[reg] = DW_CFA_offset;
+                 fc->col_offset[reg] = l * fc->data_factor;
+               }
              break;
 
            default: