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| author | Alan Modra <amodra@gmail.com> | 2017-04-27 11:08:14 +0930 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2017-04-27 11:54:29 +0930 |
| commit | d7153c4ac333c9127c18efcf184607d368bb142d (patch) | |
| tree | 72ca75116b4aadb183ba62ac329282406e67a064 /bfd/elf-bfd.h | |
| parent | 641338d8e9b62bde9672f13f0dca2324b61e46e2 (diff) | |
| download | gdb-d7153c4ac333c9127c18efcf184607d368bb142d.zip gdb-d7153c4ac333c9127c18efcf184607d368bb142d.tar.gz gdb-d7153c4ac333c9127c18efcf184607d368bb142d.tar.bz2 | |
Edit .eh_frame symbols
Experimental support for moving symbols defined in .eh_frame as their
CIEs/FDEs are edited or merged.
* elf-bfd.h (struct eh_cie_fde): Add aug_str_len and aug_data_len.
(_bfd_elf_adjust_eh_frame_global_symbol): Declare.
* elf-eh-frame.c (_bfd_elf_parse_eh_frame): Set aug_str_len and
aug_data_len.
(offset_adjust): New function.
(_bfd_elf_adjust_eh_frame_global_symbol): Likewise.
(adjust_eh_frame_local_symbols): Likewise.
(_bfd_elf_discard_section_eh_frame): Call adjust_eh_frame_local_symbols
after changing anything. Return true if anything changed.
* elflink.c (bfd_elf_discard_info): If .eh_frame changed, call
_bfd_elf_adjust_eh_frame_global_symbol for globals.
Diffstat (limited to 'bfd/elf-bfd.h')
| -rw-r--r-- | bfd/elf-bfd.h | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/bfd/elf-bfd.h b/bfd/elf-bfd.h index 2649939..bff6abc 100644 --- a/bfd/elf-bfd.h +++ b/bfd/elf-bfd.h @@ -326,6 +326,12 @@ struct eh_cie_fde or 0 if the CIE doesn't have any. */ unsigned int personality_offset : 8; + /* Length of augmentation. aug_str_len is the length of the + string including null terminator. aug_data_len is the length + of the rest up to the initial insns. */ + unsigned int aug_str_len : 3; + unsigned int aug_data_len : 5; + /* True if we have marked relocations associated with this CIE. */ unsigned int gc_mark : 1; @@ -354,7 +360,7 @@ struct eh_cie_fde unsigned int merged : 1; /* Unused bits. */ - unsigned int pad1 : 17; + unsigned int pad1 : 9; } cie; } u; unsigned int reloc_index; @@ -2180,6 +2186,8 @@ extern bfd_boolean _bfd_elf_end_eh_frame_parsing extern bfd_boolean _bfd_elf_discard_section_eh_frame (bfd *, struct bfd_link_info *, asection *, bfd_boolean (*) (bfd_vma, void *), struct elf_reloc_cookie *); +extern bfd_boolean _bfd_elf_adjust_eh_frame_global_symbol + (struct elf_link_hash_entry *, void *); extern bfd_boolean _bfd_elf_discard_section_eh_frame_hdr (bfd *, struct bfd_link_info *); extern bfd_vma _bfd_elf_eh_frame_section_offset |