bfd/

	* elf-eh-frame.c (_bfd_elf_parse_eh_frame): Handle CIE version 4
	provided that it has the expected address size and zero segment
	length.
binutils/
	* dwarf.c (struct Frame_Chunk): Add ptr_size and segment_size
	fields.
	(display_debug_frames): Handle CIE version 4.

diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index 33139c3..95f411e 100644 (file)
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -1,5 +1,9 @@
 2010-04-05  Jakub Jelinek  <jakub@redhat.com>
 
+       * elf-eh-frame.c (_bfd_elf_parse_eh_frame): Handle CIE version 4
+       provided that it has the expected address size and zero segment
+       length.
+
        * dwarf2.c (struct line_head): Add maximum_ops_per_insn field.
        (struct line_info): Add op_index field, change end_sequence type to
        unsigned char.

diff --git a/bfd/elf-eh-frame.c b/bfd/elf-eh-frame.c
index 37c9255..c948df2 100644 (file)
--- a/bfd/elf-eh-frame.c
+++ b/bfd/elf-eh-frame.c
@@ -1,5 +1,5 @@
 /* .eh_frame section optimization.
-   Copyright 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
+   Copyright 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
    Free Software Foundation, Inc.
    Written by Jakub Jelinek <jakub@redhat.com>.
 
@@ -636,7 +636,9 @@ _bfd_elf_parse_eh_frame (bfd *abfd, struct bfd_link_info *info,
          REQUIRE (read_byte (&buf, end, &cie->version));
 
          /* Cannot handle unknown versions.  */
-         REQUIRE (cie->version == 1 || cie->version == 3);
+         REQUIRE (cie->version == 1
+                  || cie->version == 3
+                  || cie->version == 4);
          REQUIRE (strlen ((char *) buf) < sizeof (cie->augmentation));
 
          strcpy (cie->augmentation, (char *) buf);
@@ -651,6 +653,13 @@ _bfd_elf_parse_eh_frame (bfd *abfd, struct bfd_link_info *info,
              REQUIRE (skip_bytes (&buf, end, ptr_size));
              SKIP_RELOCS (buf);
            }
+         if (cie->version >= 4)
+           {
+             REQUIRE (buf + 1 < end);
+             REQUIRE (buf[0] == ptr_size);
+             REQUIRE (buf[1] == 0);
+             buf += 2;
+           }
          REQUIRE (read_uleb128 (&buf, end, &cie->code_align));
          REQUIRE (read_sleb128 (&buf, end, &cie->data_align));
          if (cie->version == 1)

diff --git a/binutils/ChangeLog b/binutils/ChangeLog
index 385586b..999760d 100644 (file)
--- a/binutils/ChangeLog
+++ b/binutils/ChangeLog
@@ -1,5 +1,9 @@
 2010-04-05  Jakub Jelinek  <jakub@redhat.com>
 
+       * dwarf.c (struct Frame_Chunk): Add ptr_size and segment_size
+       fields.
+       (display_debug_frames): Handle CIE version 4.
+
        * dwarf.c (struct State_Machine_Registers): Add op_index field,
        change end_sequence type to unsigned char.
        (reset_state_machine): Clear op_index.

diff --git a/binutils/dwarf.c b/binutils/dwarf.c
index 6e49cac..094fd27 100644 (file)
--- a/binutils/dwarf.c
+++ b/binutils/dwarf.c
@@ -3906,6 +3906,8 @@ typedef struct Frame_Chunk
   int ra;
   unsigned char fde_encoding;
   unsigned char cfa_exp;
+  unsigned char ptr_size;
+  unsigned char segment_size;
 }
 Frame_Chunk;
 
@@ -4114,6 +4116,7 @@ display_debug_frames (struct dwarf_section *section,
   unsigned int length_return;
   int max_regs = 0;
   const char *bad_reg = _("bad register: ");
+  int saved_eh_addr_size = eh_addr_size;
 
   printf (_("Contents of the %s section:\n"), section->name);
 
@@ -4128,7 +4131,7 @@ display_debug_frames (struct dwarf_section *section,
       int need_col_headers = 1;
       unsigned char *augmentation_data = NULL;
       unsigned long augmentation_data_len = 0;
-      int encoded_ptr_size = eh_addr_size;
+      int encoded_ptr_size = saved_eh_addr_size;
       int offset_size;
       int initial_length_size;
 
@@ -4184,48 +4187,36 @@ display_debug_frames (struct dwarf_section *section,
          fc->augmentation = (char *) start;
          start = (unsigned char *) strchr ((char *) start, '\0') + 1;
 
-         if (fc->augmentation[0] == 'z')
+         if (strcmp (fc->augmentation, "eh") == 0)
+           start += eh_addr_size;
+
+         if (version >= 4)
            {
-             fc->code_factor = LEB ();
-             fc->data_factor = SLEB ();
-             if (version == 1)
-               {
-                 fc->ra = GET (1);
-               }
-             else
-               {
-                 fc->ra = LEB ();
-               }
-             augmentation_data_len = LEB ();
-             augmentation_data = start;
-             start += augmentation_data_len;
+             fc->ptr_size = GET (1);
+             fc->segment_size = GET (1);
+             eh_addr_size = fc->ptr_size;
            }
-         else if (strcmp (fc->augmentation, "eh") == 0)
+         else
            {
-             start += eh_addr_size;
-             fc->code_factor = LEB ();
-             fc->data_factor = SLEB ();
-             if (version == 1)
-               {
-                 fc->ra = GET (1);
-               }
-             else
-               {
-                 fc->ra = LEB ();
-               }
+             fc->ptr_size = eh_addr_size;
+             fc->segment_size = 0;
+           }
+         fc->code_factor = LEB ();
+         fc->data_factor = SLEB ();
+         if (version == 1)
+           {
+             fc->ra = GET (1);
            }
          else
            {
-             fc->code_factor = LEB ();
-             fc->data_factor = SLEB ();
-             if (version == 1)
-               {
-                 fc->ra = GET (1);
-               }
-             else
-               {
-                 fc->ra = LEB ();
-               }
+             fc->ra = LEB ();
+           }
+
+         if (fc->augmentation[0] == 'z')
+           {
+             augmentation_data_len = LEB ();
+             augmentation_data = start;
+             start += augmentation_data_len;
            }
          cie = fc;
 
@@ -4240,6 +4231,11 @@ display_debug_frames (struct dwarf_section *section,
                      (unsigned long)(saved_start - section_start), length, cie_id);
              printf ("  Version:               %d\n", version);
              printf ("  Augmentation:          \"%s\"\n", fc->augmentation);
+             if (version >= 4)
+               {
+                 printf ("  Pointer Size:          %u\n", fc->ptr_size);
+                 printf ("  Segment Size:          %u\n", fc->segment_size);
+               }
              printf ("  Code alignment factor: %u\n", fc->code_factor);
              printf ("  Data alignment factor: %d\n", fc->data_factor);
              printf ("  Return address column: %d\n", fc->ra);
@@ -4286,6 +4282,7 @@ display_debug_frames (struct dwarf_section *section,
        {
          unsigned char *look_for;
          static Frame_Chunk fde_fc;
+         unsigned long segment_selector;
 
          fc = & fde_fc;
          memset (fc, 0, sizeof (Frame_Chunk));
@@ -4307,6 +4304,8 @@ display_debug_frames (struct dwarf_section *section,
              cie = fc;
              fc->augmentation = "";
              fc->fde_encoding = 0;
+             fc->ptr_size = eh_addr_size;
+             fc->segment_size = 0;
            }
          else
            {
@@ -4316,6 +4315,9 @@ display_debug_frames (struct dwarf_section *section,
              memcpy (fc->col_type, cie->col_type, fc->ncols * sizeof (short int));
              memcpy (fc->col_offset, cie->col_offset, fc->ncols * sizeof (int));
              fc->augmentation = cie->augmentation;
+             fc->ptr_size = cie->ptr_size;
+             eh_addr_size = cie->ptr_size;
+             fc->segment_size = cie->segment_size;
              fc->code_factor = cie->code_factor;
              fc->data_factor = cie->data_factor;
              fc->cfa_reg = cie->cfa_reg;
@@ -4328,6 +4330,12 @@ display_debug_frames (struct dwarf_section *section,
          if (fc->fde_encoding)
            encoded_ptr_size = size_of_encoded_value (fc->fde_encoding);
 
+         segment_selector = 0;
+         if (fc->segment_size)
+           {
+             segment_selector = byte_get (start, fc->segment_size);
+             start += fc->segment_size;
+           }
          fc->pc_begin = get_encoded_value (start, fc->fde_encoding);
          if ((fc->fde_encoding & 0x70) == DW_EH_PE_pcrel)
            fc->pc_begin += section->address + (start - section_start);
@@ -4342,10 +4350,12 @@ display_debug_frames (struct dwarf_section *section,
              start += augmentation_data_len;
            }
 
-         printf ("\n%08lx %08lx %08lx FDE cie=%08lx pc=%08lx..%08lx\n",
+         printf ("\n%08lx %08lx %08lx FDE cie=%08lx pc=",
                  (unsigned long)(saved_start - section_start), length, cie_id,
-                 (unsigned long)(cie->chunk_start - section_start),
-                 fc->pc_begin, fc->pc_begin + fc->pc_range);
+                 (unsigned long)(cie->chunk_start - section_start));
+         if (fc->segment_size)
+           printf ("%04lx:", segment_selector);
+         printf ("%08lx..%08lx\n", fc->pc_begin, fc->pc_begin + fc->pc_range);
          if (! do_debug_frames_interp && augmentation_data_len)
            {
              unsigned long i;
@@ -4893,6 +4903,7 @@ display_debug_frames (struct dwarf_section *section,
        frame_display_row (fc, &need_col_headers, &max_regs);
 
       start = block_end;
+      eh_addr_size = saved_eh_addr_size;
     }
 
   printf ("\n");