2016-12-25 David Anderson
* dwarf.h: DWARF5 changed DW_FORM_ref_sup to DW_FORM_ref_sup4
and added DW_FORM_ref_sup8.
2016-12-20 David Anderson
* libdwarfdefs.h: Removed definition of SHF_COMPRESSED.
There was no reason to define it early in a local header file.
* dwarf_init_finish.c: Added definition of SHF_COMPRESSED.
Making it a late definition avoids a conflict with Centos-7.3.
2016-12-06 David Anderson
* dwarf.h: Comments mention certain values unused in
DWARF2 and later as being from DWARF1.
2016-11-24 David Anderson
* libdwarf/gennames.c: Update version string.
2016-11-24 David Anderson
* Makefile.in: Clean *~
2016-11-16 David Anderson
* dwarf_die_deliv.c(dwarf_child): Added a check for 'at end of DIEs',
removed pointless parens in returns, and added {} to make an if()
follow normal form.
* dwarf_query.c: Removed pointless parens in return.
* dwarf_util.c(_dwarf_get_size_of_val): Changed return 0
to return DW_DLV_OK so it reads as is supposed to.
For DW_FORM_block1 check a pointer for validity before
dereferencing. In _dwarf_check_string_valid() added
comments clarifying the intent of the function.
2016-11-11 David Anderson
* dwarf_init_finish.c: Remove a few bytes of trailing whitespace.
* dwarf_leb.c(_dwarf_decode_s_leb128_chk): Now we avoid
using code with undefined behavior. And add new test cases
in the #ifdef TESTING code that shows the problem is fixed.
2016-11-04 David Anderson
* libdwarf.h.in: Removed trailing whitespace, three places.
Added DW_DLE_ZLIB_UNCOMPRESS_ERROR.
* dwarf_arange.c(dwarf_get_aranges_list): Add checks for the sanity
of aranges headers and values to catch corrupted dwarf..
* dwarf_errmsg_list.c: Add DW_DLE_ZLIB_UNCOMPRESS_ERROR to
identify impossible zlib compression.
* dwarf_form.c:(dwarf_formblock): Check for overrun of
a section-end. Return witw DW_DLE_FORM_BLOCK_LENGTH_ERROR as
the error when such corrupt dwarf is encountered.
* dwarf_init_finish.c(do_decompress_zlib): Check for corrupted
zlib compression information and set DW_DLE_ZLIB_UNCOMPRESS_ERROR
when a corrupted expanded-length is found.
* dwarf_macro5.c(_dwarf_skim_forms): For DW_FORM_STRING call
_dwarf_check_string_valid() to ensure a string does not
run off the end of a malloc block.
* dwarf_util.c(_dwarf_check_string_valid): Remove and add
a blank line to get the usual way functions begin with
declarations, a blank line, then code. No change in logic.
2016-11-01 David Anderson
* dwarf.h: Adding Ada GNAT gcc attributes DW_AT_GNU_numerator,
DW_AT_GNU_denominator, DW_AT_GNU_bias.
2016-10-21 David Anderson
* gennames.c: Update version string.
2016-10-15 David Anderson
* libdwarf.h.in: Added DWARF5 values
to enum Dwarf_Form_Class.
* dwarf_query.c(dwarf_get_form_class): Added DWARF5 support.
2016-10-11 David Anderson
* pro_forms.c, pro_section.c: Restoring DW_AT_MIPS_linkage_name
and DW_AT_MIPS_abstract_name (lost by accident in July 2007)
and adding DW_AT_linkage_name (DWARF5, but usable in
earlier DWARF versions if you wish to use it).
2016-10-07 David Anderson
* libdwarf2p.1.mm: Improved the documentation of
dwarf_pro_set_default_string_form().
* libdwarf2p.1.pdf: Version 1.46. Regenerated.
* pro_die.c: Now the code allows modification
of the start of real strings in .debug_str easily.
Was a bit brittle before, allowed offset of 1 to work
but not zero.
* pro_opaque.h: Add dse_has_table_offset member to
eliminate brittleness in the logic for .debug_str.
* pro_init.c: Use dse_has_table_offset member to
eliminate brittleness in the logic for .debug_str.
2016-10-04 David Anderson
* dwarf_elf_access.c: Remove trailing whitespace.
* dwarf_form.c: Fix an indent.
* dwarf_init_finish.c: Comment the #if 0 so it is clear
these are for debugging only.
* dwarf_leb.c: Remove trailing whitespace.
* dwarf_line.c: Remove unused #if 0/#endif code.
* dwarf_macro5.c: Remove some obsolete #if 0 code.
Comment the remaining #if 0 so it is clear
these are for debugging only.
Remove trailing whitespace.
* dwarf_util.h: Delete obsolete #if 0 macro.
* dwgetopt.c: Comment the #if 0 so it is clear
these are for debugging only.
* pro_frame.h: Delete never-used #if 0 macro.
2016-10-04 David Anderson
* dwarf_util.c(_dwarf_check_string_valid):
removed accidental test code.
2016-10-04 David Anderson
* dwarf_leb.c: The 'make tests' test code had some
warnings, which are now fixed.
* libdwarf.h.in: Adding error codes.
* dwarf_util.c(_dwarf_check_string_valid): Uses passed-in error
code in case pointer out of bounds.
_dwarf_get_size_of_val now calls _dwarf_check_string_valid()
on a DW_FORM_string.
* dwarf_util.h: _dwarf_check_string_valid() interface changed.
* dwarf_errmsg_list.c: Adding error codes.
* dwarf_form.c, dwarf_frame2.c, dwarf_global.c,
dwarf_line.c, dwarf_line_table_reader_common.c,
dwarf_macro.c, dwarf_macro5.c, dwarf_string.c:
Using the new _dwarf_check_string_valid interface and
new error codes.
* dwarf_elf_access.c: Added commentary about a libelf call
and possible outcomes.
2016-10-03 David Anderson
* Makefile.in: Now run tests at build time to ensure DW_DLE macros correct.
* dwarf_errmsg_list.c: Add new error code and add test code to verify
DW_DLE_ macros specified correctly.
* dwarf_sort_line.c: While this file is not used, for consistency
it uses the checking macros so deleting the non-checking ones
would not look odd.
* dwarf_util.c: Add a check for running off end of abbreviation data
at a spot that was missed till now.
* dwarf_util.h: Delete unused non-checking DECODE_LEB128_UWORD and
DECODE_LEB128_SWORD and SKIP_LEB128_WORD macros.
* libdwarf.h.in: Add DW_DLE_ABBREV_OFF_END and correct
the numbering (again). Now critical parts
are checked at build time.
2016-09-30 David Anderson
* dwarf_leb.c: One comparison was accidentally
signed vs unsigned. Now both unsigned.
2016-09-30 David Anderson
* Makefile.in: Ensure test executable removed by make clean.
2016-09-30 David Anderson
* dwarf_leb.c: Fix decode and encode leb to avoid
runtime warning from left-shift signed value,
we got into undefined behavior.
Add test code used by 'make tests'.
* Makefile.in: Add leb testing to 'make tests'
* configure.in: Add additional -fsanitize tests.
* configure: Regenerated.
2016-09-28 David Anderson
* dwarf_opaque.h: New interface for
_dwarf_extract_string_offset_via_str_offsets().
Remove duplicate declaration of the function.
* dwarf_form.c(_dwarf_extract_string_offset_via_str_offsets):
Had a test for end of section
on what was sometimes the wrong section.
Now section end passed in and correct.
Depending on circumstances such
as where elf data was in memory, the
result was a single regression test would
get a DW_DLE_LEB_IMPROPER
error ... or not get it.
* dwarf_macro5.c: A test for DW_DLV_OK was testing the
wrong local variable.
2016-09-28 David Anderson
* dwarf_errmsg_list.c: Added error codes for
duplicated DWARF5 .debug_loclists and .debug_rnglists
sections.
* dwarf_init_finish.c: Adds incomplete support for
DWARF5 .debug_names.c, .debug_loclists, and .debug_rnglists
Adds dwarf_get_section_max_offsets_d() to return all the possible
DWARF section sizes across all DWARF2..5
* dwarf_line_table_reader_common.c: DW_LNCT renamed as
DW_LNCT_GNU as the DWARF5 standard has some differences
from the experimental version (no named)DW_LNCT_GNU.
* dwarf_loc2.c: Renames DW_LLE to DW_LLEX as these are
the non-standard experimental version (not the same
as the DWARF5 standard).
* dwarf_opaque.h: Updated version number comments.
Added new section support data in Dwarf_Debug_s.
* dwarf_ranges.c(dwarf_get_ranges_a): deleted unused local variable.
* libdwarf.h.in: New error codes. Declaration for
dwarf_get_section_max_offsets_d() added.
Now has all the DWARF5 dwarf_get_*_name() function declarations too.
* dwarf_error.h: Deleted two unwanted blank lines.
2016-09-28 David Anderson
* gennames.c: Now the comparison function to qsort
guarantees a stable sort by also referencing the
original array location (a new data item
in the struct). Needed for consistent
output.
2016-09-28 David Anderson
* dwarf_alloc.c: Special function
_dwarf_special_no_dbg_error_malloc() was failing
to return a value. Serious bug. Now it returns
a value.
2016-09-27 David Anderson
* dwarf.h: The previous experimental DW_LLE_
non-standard names are renamed as DW_LLEX_
temporarily. Do not use the LLEX names.
2016-09-27 David Anderson
* dwarf.h: Added commentary about DW_children_yes[no] which
are non-standard. Use DW_CHILDREN_yes[no] instead.
2016-09-27 David Anderson
* dwarf.h: Update with the probably-final DWARF5
tags, attributes, etc.
2016-09-26 David Anderson
* dwarf_query.c: Removed four lines of code associated with
DWARF5 DW_MACRO_define_strx that
should not have existed.
There are as yet no testcases using strx, though
one fuzzed testcase (liu/NULLdereference0519.elf)
made it appear such was in use.
2016-09-25 David Anderson
* dwarf_opaque.h: Accidentally had a function pointer
definition _dwarf_get_elf_flags_func_ptr but now has a
typedef of _dwarf_get_elf_flags_func_ptr_type instead.
* dwarf_init_finish.c: Add definition of _dwarf_get_elf_flags_func.
2016-09-23 David Anderson
* gennames.c: gennames -t generated incorrect tables.
gcc -fsanitize=address noticed out of bounds references
in the generated code. The code has been wrong for quite a while.
It's likely no one was using the table form, gennames -s
is generally better to use anyway.
* pro_frame.c: Was using strdup() and now uses _dwarf_p_get_alloc()
and strcpy() so we do not leak a string.
2016-09-22 David Anderson
* dwarf_abbrev.c: Was calling _dwarf_error() with NULL dbg
when a real dbg was available. fixed.
* dwarf_alloc.c: Was testing for the static DW_DLA_ERROR
too late in dwarf_dealloc(). So the address sanitizer reported the
erroneous address calculation that resulted.
* dwarf_error.c,dwarf_error.h: Now DE_STANDARD,DE_STATIC,DE_MALLOC
let dwarf_dealloc free up Dwarf_Error resources properly.
2016-09-22 David Anderson
* dwarf_ranges.c: dwarf_get_ranges_a() was allocating at the wrong
place and not freeing all it should.
2016-09-21 David Anderson
* dwarf_errmsg_list.c,libdwarf.h.in: Added DW_DLE_LINE_TABLE_BAD.
* dwarf_line_table_reader_common.c: Added tests to prevent running
off end of line table. Second commit is fix 3 line indent error.
2016-09-21 David Anderson
* configure.in: Support --enable-sanitize
* configure: Regenerated.
* dwarf_alloc.c: Rearrange DW_DLA_STRING check to avoid
calculating and using an address that may not exist.
And check earlier for a NULL dbg.
* dwarf_die_deliv.c: Add offset and length checks to catch
corrupt dwarf.
* dwarf_errmsg_list.c: Add DW_DLE_LOCLIST_OFFSET_BAD error code.
* dwarf_form.c: Delete three completely blank lines for
consistency in formatting..
* dwarf_loc.c: Add offset and length checks to catch
corrupt dwarf. Correct the initialization of loc_section_end
in _dwarf_read_loc_section().
* dwarf_ranges.c: Add free() in two places to avoid
memory leak.
* dwarf_util.c: Add length error checks for DW_FORM_block* .
Correct initialization of end_abbrev_ptr in
_dwarf_get_abbrev_for_code().
* libdwarf.h.in: Add DW_DLE_LOCLIST_OFFSET_BAD.
2016-09-17 David Anderson
* libdwarf.h.in: Added error code DW_DLE_SIBLING_LIST_IMPROPER.
* dwarf_errmsg_list.c: Added DW_DLE_SIBLING_LIST_IMPROPER.
* dwarf_die_deliv.c: Vulnerability DW201609-001.
Added a check to catch invalid DWARF instead of
reading a byte inappropriately (that might not even
be addressable).
The error code generated is DW_DLE_SIBLING_LIST_IMPROPER.
2016-09-15 David Anderson
* configure.in: Add check for unistd.h .
* configure: Regenerated.
* gennames.c: Add HAVE_UNISTD_H check for the include
of unistd.h.
2016-09-15 David Anderson
* dwarf_elf_access.c: Depends on libelf.h, so if libelf.h
is missing (as shown in the generated config.h)
the compile stops with an error.
2016-09-15 David Anderson
* libdwarf.h.in: New interface functions
dwarf_producer_finish_a() and
dwarf_add_die_to_debug_a()
declared, providing libdwarf-standard
int return value.
* libdwarf2p.1.mm: Document dwarf_producer_finish_a()
and dwarf_add_die_to_debug_a().
* libdwarf2p.1.pdf: Regenerated. Rev 1.45.
* pro_init.c: Remove use of C99 type uint32_t
and use DW_TSHASHTYPE instead.
* pro_finish.c: Implement dwarf_producer_finish_a().
* pro_die.c: Implement dwarf_add_die_to_debug_a().
2016-09-14 David Anderson
* dwarf_dsc.h: Removed accidental typedef redeclaration
of Dwarf_Dsc_Head: it is already in libdwarf.h and
FreeBSD compiler complained.
* pro_section.c: Removed trailing whitespace from three lines.
Fixed indentation on one line.
2016-09-13 David Anderson
* pro_section.c: new interface dwarf_get_section_bytes_a().
* libdwarf.h.in: Declaration for dwarf_get_section_bytes_a() added.
* libdwarf2p.1.mm: Document dwarf_get_section_bytes_a().
* libdwarf2p.1.pdf: Regenerated. Rev 1.44.
2016-09-12 David Anderson
* libdwarf.h.in: Declaring dwarf_new_die_a()
and dwarf_die_link_a().
Renamed yesterday's new function dwarf_transform_to_disk_form_b() to
dwarf_transform_to_disk_form_a() for consistency
with the new dwarf_new_die_a().
* pro_die.c: Implementing dwarf_new_die_a()
and dwarf_die_link_a() with easier to use
error handling than dwarf_new_die()
and dwarf_die_link().
* libdwarf2p.1.mm: Document the new and renamed *_a() functions.
* libdwarf2p.1.pdf: Regenerated. Rev 1.43.
2016-09-11 David Anderson
* dwarf_errmsg_list.c: Adding DW_DLE_LEB_OUT_ERROR.
* libdwarf.h.in: Adding DW_DLE_LEB_OUT_ERROR
and dwarf_transform_to_disk_form_b(), first steps
to making type-safe producer functions.
* libdwarf2p.1.mm: Document dwarf_transform_to_disk_form_b().
* libdwarf2p.1.pdf: Rev 1.42.
* pro_arange.c: Altered internal interface to _dwarf_transform_arange_to_disk().
* pro_die.c: Altered internal error return to use DW_DLV_ERROR.
* pro_macinfo.c,pro_macinfo.h: Altered internal interface to
_dwarf_pro_transform_macro_info_to_disk().
* pro_section.c: Implemented dwarf_transform_to_disk_form_b() and
changed internals to use DW_DLV_OK/DW_DLV_ERROR.
Many places where errors were ignored now have checks for error.
* pro_section.h: Added GET_CHUNK_ERR to return DW_DLV_ERROR
on error. Altered internal function _dwarf_transform_arange_to_disk()
and _dwarf_transform_simplename_to_disk()
to the newer interface.
* pro_types.h: Internal declaration of _dwarf_transform_simplename_to_disk()
now uses the new interface.
2016-09-11 David Anderson
* dwarf_dsc.c: Set the internal flag so we do not redo the
leb decoding over and over.
2016-09-08 David Anderson
* Makefile.in: Add dwarf_dsc.c to the build to access
DW_AT_discr_list attributes.
* dwarf.h: Added comment that DW_AT_discr_list is DWARF2.
* dwarf_alloc.c, dwarf_alloc.h: Added DW_DLA_DSC_HEAD support.
* dwarf_dsc.c: Implement the new discriminant list
functions.
* dwarf_dsc.h: Internal discriminant types.
* libdwarf.h.in: A new opaque type and new functions
dwarf_discr_list etc.
* dwarf_errmsg_list.c: New error code for
discriminants: DW_DLE_DISCR_ARRAY_ERROR.
* checkexample.c: Added a new example. for dwarf_descr_list().
2016-09-01 David Anderson
* libdwarf2.1.mm: Improved the wording for dwarf_diename()
and dwarf_die_text().
* libdwarf2.1.pdf: Regenerated as Version 2.51.
2016-08-28 David Anderson
* libdwarf.h.in: Added dwarf_pro_get_string_stats() for producer
library users to know how libdwarf handled DW_AT_name etc.
* pro_die.c: Corrected the tsearch-related compare/hash functions
to work correctly.
* pro_finish.c: Implements dwarf_pro_get_string_stats().
* pro_init.c: Hash function for tsearch implemented correctly now.
* pro_opaque.h: Changed the hash data structure so it can work
correctly. Added the statistics struct to the Dwarf_P_Debug
structure.
* libdwarf2p.1.mm: Documents dwarf_pro_get_string_stats().
* libdwarf2p.1.pdf: Revision 1.41. Regenerated.
2016-08-27 David Anderson
* pro_section.c, pro_reloc_stream.c: In a couple of places names were
shadowing other names. Fixed. No change in functionality.
2016-08-25 David Anderson
* libdwarf.h.in: Added new error code relating to DW_FORM_strp
relocations.
* dwarf_errmsg_list.c: Added DW_DLE_DEBUGSTR_UNEXPECTED_REL string.
* pro_die.c: Added a comment related to DW_FORM_strp.
* pro_opaque.h: Added/modified commentary.
* pro_section.c: Now sets the correct section symbol for
relocations for strings in .debug_str.
* pro_reloc.c: Added commentary, deleted blank lines.
* pro_reloc_stream.c: Moved declarations to inner
contexts where possible. Refined looping for clarity.
2016-08-23 David Anderson
* libdwarf2p.1.mm: Document dwarf_pro_set_default_string_form.
* libdwarf2p.1.pdf: Regenerated. Rev 1.40.
2016-08-23 David Anderson
* dwarf_alloc.c,dwarf_frame.c: Remove trailing whitespace.
* dwarf_errmsg_list.c: Has four new error codes to deal
with emitting .debug_str from the producer.
* gennames.c: Added 'static' to a static function to
avoid compiler warnings.
* libdwarf.h.in: Four new error codes.
A new producer function: dwarf_pro_set_default_string_form() which
causes debug_info strings to be emitted in .debug_str where
that seems like it might save space.
* pro_alloc.c: A new debug_str producer string
hashtab free helper function to clean up the .debug_str
hash table..
* pro_die.c: Now calls a single function to emit strings and
can emit in either .debug_info or .debug_str.
* pro_die.h: Declares _dwarf_pro_set_string_attr() now.
* pro_forms.c: Some local variables are always initialized now
at declaration point. Now uses common code to set up strings.
* pro_init.c: Initializes debug_str hash table for strings
And sets up the section properly. Defines the hashfunc.
* pro_opaque.h: Fixes some spacing awkwardness. Adds
.debug_str hash data and eliminates unused data.
* pro_section.c: Now emits .debug_str when such is
wanted.
2016-06-13 David Anderson
* dwarf_alloc.c: Dwarf_Fde_s now has a destructor.
* dwarf_frame.c,dwarf_frame.h: Now dwarf_get_fde_info_for_reg3 memoizes
frame data making one pattern of use (from dwarfdump)
much much faster.
2016-06-13 David Anderson
* dwarf_frame.c: Revised some local assignments so
we are sure the same value used as intended.
Added some {} on if for consistency with libdwarf use.
* gennames.c: Update version string.
2016-06-12 David Anderson
* libdwarf/gennames.c: Update version string.
2016-06-12 David Anderson
* dwarf_frame.c: Adding dwarf_get_fde_info_for_cfa_reg3_b()
which lets dwarfdump print frame data a bit more quickly.
It is unclear whether other applications will find this
new interface to be of value.
* dwarf_frame.h,dwarf_frame3.c: Internal interfaces changed slightly
to allow the new function to work.
* libdwarf.h.in: Added dwarf_get_fde_info_for_cfa_reg3_b()
declaration.
* libdwarf2.1.mm: Documents dwarf_get_fde_info_for_cfa_reg3_b().
Rev.2.50
* libdwarf2.1.pdf: Regenerated.
2016-06-08 David Anderson
* dwarf_init_finish.c, dwarf_line_table_reader_common.c: Remove
trailing whitespace. Fix one indent.
2016-06-08 David Anderson
* gennames.c: Update version string.
2016-06-07 David Anderson
* Makefile.in: Use $(SONAME) rather than libdwarf.so.1 whereever
possible.
2016-06-01 David Anderson
* Makefile.in: Tweaks for debian build compatibility.
* gennames.c: Use DW_VERSION_DATE_STR instead of __DATE__ __TIME__
2016-05-23 David Anderson
* dwarf_errmsg_list.c, libdwarf.h.in: Added
DW_DLE_COMPRESSED_EMPTY_SECTION.
* dwarf_init_finish.c: If load_section gets
DW_DLV_NO_ENTRY just return that.
If requres-decompress but has no data call it
a corrupt Elf section (given what sections
libdwarf is interested in).
* dwarf_line_table_reader_common.c: Only
deal with line table format entries if the
count is > 0.
2016-05-23 David Anderson
* Makefile.in: add SONAME libdwarf.so.1 to dynamic section when
building shared libdwarf.so
We have not made an incompatible interface change since
May 19, 2014 (and that was to the producer code not to
what DWARF readers use).
2016-05-22 David Anderson
* libdwarf.h.in, dwarf_errmsg_list.c: Adding
DW_DLE_DIRECTORY_FORMAT_COUNT_VS_DIRECTORIES_MISMATCH error code.
Fixed unsigned/signed comparison warning in the table test code.
* dwarf_line.c: If we find a null pointer from include directores
we substitute "<erroneous NULL include dir pointer>" for the
reader.
* dwarf_line_table_reader_common.c: Detect a corrupted DWARF5
directory count vs directory format count problem and return
an error.
2016-05-20 David Anderson
* dwarf_macro5.c: Was failing to initialize
mc_cu_context leading to coredump.
If dwarf_srcfiles() returned zero as the count
of source files an erroneous calloc() would result in an
objection from valgrind: an erroneous calloc of zero bytes
of srcfiles pointers would never be freed.
2016-05-19 David Anderson
* Makefile.in: HOST_CFLAGS now references CFLAGS
at the request of the Debian project.
* configure.in: Now defaults to -fPIC always
(though in a nonshared build one could reasonably
turn it off with --disable-fpic)
Adds several messages reporting configure actions.
* configure: Regenerated.
2016-05-18 David Anderson
* dwarf_form.c: Directly check expression length against
section length in case expression length very very large.
* dwarf_query.c: _dwarf_calculate_info_section_*() routines
made clearer and the *_start_ptr() instance also now returns
the length (via a pointer arg).
* dwarf_xu_index.c: Check data read from the section so
a wildly large columns count or slots count will be caught
and an error returned.
2016-05-16 David Anderson
* dwarf_elf_access.c: Check more thoroughly for corrupt
relocation records and return an error if such found.
* dwarf_macro5.c: Remove trailing whitespace.
2016-05-10 David Anderson
* dwarf_arange.c,dwarf_die_deliv.c: All read operations check for overrun.
* dwarf_errmsg_list.c: DW_DLE_HEADER_LEN_BIGGER_THAN_SECSIZE,
DW_DLE_LOCEXPR_OFF_SECTION_END, and DW_DLE_POINTER_SECTION_UNKNOWN
added to error values.
* dwarf_form.c,dwarf_frame.c,dwarf_frame2.c,dwarf_global.c,dwarf_line.c,
dwarf_line_table_reader_common.c,dwarf_loc.c,dwarf_loc2.c,
dwarf_macro5.c,dwarf_print_lines.c,dwarf_query.c,
dwarf_ranges.c,dwarf_util.c, dwarf_xu_index.c: All read
operations check for overrun.
* dwarf_opaque.h: Put the 4 SGI-only section data
items next to each other to make it clear they
are such.
* dwarf_util.h: Added some checks to READ_AREA_LENGTH_CK
* libdwarf.h.in: Defined the new error names.
2016-05-07-b David Anderson
* libdwarf2.1.mm,libdwarf2p.1.mm: Fixed spelling errors.
* libdwarf2.1.pdf,libdwarf2p.1.pdf: Regenerated.
2016-05-07 David Anderson
* libdwarf.h.in, dwarf_errmsg_list.c: New error codes for
stopping due to corrupted frame data.
* dwarf_frame.c,dwarf_frame.h,dwarf_frame2.c,dwarf_line.c:
Notice frame area overrun and generate error.
2016-05-06 David Anderson
* dwarf_errmsg_list.c: Added DW_DLE_ZLIB_SECTION_SHORT.
* dwarf_form.c: Now checking for section overrun.
* dwarf_init_finish.c: Now checking zlib reading
for section overrun.
* dwarf_macro5.c: Now checking for section overrun and
also fixing double delete caused by having
_dwarf_get_alloc() space pointing at other _dwarf_get_alloc()
space. Because in case of error the order of free
of such is unpredictable!
* dwarf_macro5.h: Added comment on mc_srcfiles member.
* libdwarf.h.in: Added DW_DLE_ZLIB_SECTION_SHORT.
2016-05-05 David Anderson
* dwarf_form.c: Add a test so that a really large form_block length
will not be considered safe (due to unsigned arithmetic
overflow).
Fixed the new check-code reading string offsets section
so the endpoint in the check is that section, not debug_info.
* dwarf_query.c: New function _dwarf_calculate_info_section_start_ptr()
helps in some checking.
* dwarf_util.h: Add a test so arithmetic overflow will not show
a bogus value as being ok.
* libdwarf.h.in,dwarf_errmsg_list.c: Add error code
DW_DLE_FORM_BLOCK_LENGTH_ERROR so we have a specific
error for this case.
* dwarf_line.c: %lld switched to "%" DW_PR_DSd
* dwarf_opaque.h: Added function declaration for
_dwarf_calculate_info_section_start_ptr().
2016-05-04 David Anderson
* dwarf_macro5.c(construct_at_path_from_parts): Move 3 lines
of code up to test for NULL pointer. So we do not
dereference the pointer.
2016-05-03 David Anderson
* dwarf_die_deliv.c: Add checks for overrun of end of section
due to corrupted DWARF.
* dwarf_arange.c,dwarf_util.c: first use of READ_UNALIGNED_CK.
* dwarf_errmsg_list.c, libdwarf.h.in: DW_DLE_READ_LITTLEENDIAN_ERROR
and DW_DLE_READ_BIGENDIAN_ERROR are errors possible
in READ_UNALIGNED_CK. DW_DLE_LINE_OFFSET_WRONG_FORM gives
a more meaningful description of a particular corruption
problem (not a new test, just a new error name).
* dwarf_elf_access.c: Add a check on relocations to ensure
we do not write off the end of the section.
* dwarf_query.c: Using local variables for shorter lines.
* dwarf_util.h: Implement READ_UNALIGNED_CK macros.
* dwarf_leb.c: Improve a couple comments.
* dwarf_line.c: Now use DW_DLE_LINE_OFFSET_WRONG_FORM.
Add operandmismatch() to get better debug information
in case of corrupted dwarf. Revise the code for
clarity.
* dwarf_macro5.c: Duplicate free() could result if
dwarf_finish() was used to clean up from a dwarf macro
context. Two functions are really static so
the function type set properly now.
2016-04-30 David Anderson
* dwarf_frame.c, dwarf_line_table_reader_common.c,
dwarf_loc2.c: switch to using DECODE_LEB*_CK.
* dwarf_frame.c: Delete unused local variables.
Use DECODE_LEB*_CK for better error checking.
* dwarf_frame2.c, dwarf_frame.h: Internal functions get new
arguments to support DECODE_LEB*_CK.
* dwarf_arange.c: Using UNUSEDARG to suppress warning.
* dwarf_line_table_reader_common.c: Use DECODE_LEB*_CK
for better error checking.
* dwarf_loc2.c: Use DECODE_LEB*_CK
for better error checking.
2016-04-30 David Anderson
* dwarf_die_deliv.c: Deleted unused local variable.
* dwarf_form.c,dwarf_macro.c, dwarf_macro5.c: Now uses
DCODE_LEB128*_CK nearly everywhere
for better checking for corrupted data.
* dwarf_opaque.h:New argument to _dwarf_get_addr_index_itself()
for better data checks..
* dwarf_query.c: Uses revised _dwarf_get_addr_index_itself()
interface.
* dwarf_util.c: Fixed formatting errors.
2016-04-29 David Anderson
* dwarf_line_table_reader_common.c, dwarf_macro.c,
dwarf_macro5.c, dwarf_util.c, dwarf_util.h:
Now use DECODE_LEB128_*CK macros simplifying
the code while catching errors/corruption in DWARF
data.
2016-04-28 David Anderson
* dwarf_die_deliv.c: Now _dwarf_next_die_info_ptr() has
a section length argument.
* dwarf_query.c, dwarf_util.c: Now uses the checked version
of leb reading.
* dwarf_util.h: Now _dwarf_get_size_of_val() has
section_end_ptr argument for checking leb values
do not overrun end of section.
2016-04-27 David Anderson
* dwarf_frame2.c: Now notices a frame-length field
which is too large to be meaningful and returns
an error..
2016-04-27 David Anderson
* Makefile.in: Now dwarf_error.o dependency on
dwarf_errmsg_list.c is explicit.
* dwarf_errmsg_list.c: New error strings.
* libdwarf.h.in: New error values for when running off
end of section and line range and address size where
zero leads to trouble..
* dwarf_abbrev.c,dwarf_die_deliv.c, dwarf_frame.c,
dwarf_frame.h, dwarf_frame2.c,dwarf_frame3.c,dwarf_leb.c,
dwarf_line.c, dwarf_line.h, dwarf_line_table_reader_common.c,
dwarf_query.c,dwarf_util.c,dwarf_util.h:
Add checks for running off end of section.
2016-04-26 David Anderson
* Makefile.in: The new errmsg_check dependency
line was a bit wrong. libdwarf.h should not have $(srcdir)
2016-04-25 David Anderson
* dwarf_errmsg_list.c: When -DTESTING ensure all the
error messages have a value in () so we can check
that value.
2016-04-25 David Anderson
* dwarf_tied.c: A C11-ism crept in. Fixed.
Added 'static' to local function declaration.
Removed unused local variable.
* dwarf_errmsg_list.c: Now checks that the number in ()
matches the index (and still checks that the array size
is the declared size) when compiled -DTESTING.
2016-04-25 David Anderson
* dwarf_errmsg_list.c: Fixed indent mistakes.
* dwarf_leb.c: Fixed places were leb128_length
was assumed non-null (dwarf_form.c passes NULL!).
2016-04-25 David Anderson
* Makefile.in: Added testing of the _dwarf_errmsgs array.
* dwarf_error.c: Moved _dwarf_errmsgs out of dwarf_error.c into
dwarf_errmsg_list.c
* dwarf_errmsg_list.c: Now has error strings and test code.
2016-04-25 David Anderson
* dwarf_error.c: The error description
"DW_DLE_GDB_INDEX_INDEX_ERROR(264)" was missing the
comma so following errors were reporting the wrong string.
2016-04-21 Carlos Alberto Enciso
* Use the _WIN32 macro to identify a WINDOWS specific code.
2016-03-14 David Anderson
* dwarf_util.c: Changed 'byte' to 'byte pair'
in a comment. Where we read abbreviation AT/FORM lists.
2016-03-14 David Anderson
* dwarf_error.c(_dwarf_errno): Now prints to stdout and
does abort(1) when it has to give up. Instead of
using stderr and abort().
It is not a good idea for applications to fail to provide
error handling, so no one should notice this change.
* libdwarf2.1.mm: Documents behavior in case there is no error
handling provided by our caller.
* libdwarf2.1.pdf: Regenerated. Rev 2.48.
2016-03-14 David Anderson
* libdwarf2.1.mm: Documents Dwarf_Handler error handler function.
* libdwarf2.1.pdf: Regenerated. Rev 2.47.
2016-03-13 David Anderson
* dwarf_query.c: Use dwarf_formstring to read string
attributes as it handles all the string types already.
Now dwarf_diename() and dwarf_die_text() call dwarf_formstring()
so DW_FORM_strp_sup and DW_FORM_GNU_strp_alt are
properly handled(along with all the other string FORMs).
* dwarf_form.c: Handle an error in dwarf_formstring()
(for tied files, or the lack thereof)
differently so it all works properly even if the incoming
error argument is null.
2016-03-12 David Anderson
* dwarf_abbrev.c: Uses renamed fields abbrev internal struct.
Removes some gratuitous (). Adds clarifying {}
* dwarf_abbrev.h: renames Dwarf_Abbrev_s struct fields
from ab_tag to dab_tag, etc.
Adds global section offset to the fields.
* dwarf_die_deliv.c: Uses renamed Abbrev_List fields.
Adds dwarf_die_abbrev_global_offset() function so
clients can properly identify where an abbrev entry is
in .debug_abbrev.
* dwarf_die_deliv.h: renames Dwarf_Abbrev_List
struct fields from ab_tag to abl_tag etc.
Adds abl_goffset, abl_count.
* dwarf_query.c,dwarf_util.c: Uses renamed Dwarf_Abbrev_List
fields.
* libdwarf.h.in: Adds function dwarf_die_abbrev_global_offset().
* libdwarf2.1.mm: Documents dwarf_die_abbrev_global_offset().
* libdwarf2.1.pdf: Regenerated. Rev 2.46.
2016-03-11 David Anderson
* dwarf_die_deliv.c: Fixed issues with handling NULL
Dwarf_Error* and with mistakes treating DW_DLV_NO_ENTRY
as if it were DW_DLV_ERROR.
* dwarf_form.c: Only do dwarf_errno(*error) when error is non-null.
* dwarf_macro5.c, dwarf_query.c, dwarf_ranges.c: Avoid the
possibility of
doing dwarf_errno(*error) when error is null.
* dwarf_util.c(_dwarf_error_mv_s_to_t): Added code to
ensure that nothing crash-worthy happens
even if a future internal caller calls it with one or more NULL
arguments.
* libdwarf2.1.mm: Added a few words about Error Handling in general
to clarify earlier wording (earlier wording was not as explicit
as it should have been).
* libdwarf2.1.pdf: Regenerated. Version 2.45
* dwarf_sort_line.c: Though no longer built or used, added
an initializer to a local variable for correctness.
* dwarf_addr_finder.c: Though no longer compiled or used (is IRIX only),
cleaned up local variable declarations that were not
up to the current standard usage in libdwarf.
2016-03-11 David Anderson
* Makefile.in: Added a comment about pr and pdf-building.
2016-03-09 David Anderson
* libdwarf2.1.mm: Slightly altered the dwarf_offsets_list() documentation.
* libdwarf2.1.pdf: Rev 2.44. Regenerated.
2016-03-09 David Anderson
* dwarf_form.c: Correct and amplify a comment.
2016-03-01 David Anderson
* libdwarf2.1.mm: Documented dwarf_dietype() and
dwarf_offset_list().
* libdwarf2.1.pdf: Regenerated. Rev 2.43
* checkexamples.c: Added example for dwarf_offset_list().
2016-02-19 Carlos Alberto Enciso
* dwarf_alloc.h, dwarf_alloc.c, dwarf_base_types.h, dwarf_opaque.h:
New allocator type (DW_DLA_CHAIN_2), to allow a list of addressed
types (address, offset).
There was Memory corruption due to incorrect usage of
memory allocator type.
* dwarf_query.c: Use the new allocator type.
2016-02-14 David Anderson
* libdwarf2.1.mm: dwarf_exprloc -> dwarf_formexprloc.
The spelling error was introduced in version 2.41.
* libdwarf2.1.pdf: Regenerated. Version 2.42
2016-02-13 David Anderson
* libdwarf2.1.mm: Added dwarf_lineoff_b() documentation.
Fixed a typo in dwarf_formexprloc() documentation.
* libdwarf2.1.pdf: Regenerated. Version 2.41
* Makefile.in: Add HOSTCFLAGS HOSTLDFLAGS HOSTCC to make
it easier to cross-compile. Remove common.c, common.h
(a few lines of code moved to gennames.c).
* README: document use of HOSTCC
* common.c,common.h: Delete. A few lines of code moved to gennames.c.
* configure.in: for AC_TRY_RUN add [],[] for else and for
cross-compile cases.
* configure: Regenerated.
* dwarf_die_deliv.c, dwarf_frame2.c, dwarf_line.c,
dwarf_macro5.c, dwarf_print_lines.c, dwarf_ranges.c:
Renamed to avoid shadowing variables with same name.
For clarity.
* gennames.c: Incorporates a few lines from common.c
so common.c, common.h can be deleted.
2016-02-10 David Anderson
* README: Improved a comment about Dwarf_Obj_Access_Methods.
* dwarf_elf_access.c: New function _dwarf_get_elf_flags_func()
extracts the sh_flags field from Elf sections. In an odd way
so we preserve binary and source compatibility.+
* dwarf_error.c,libdwarf.h.in: New error DW_DLE_ELF_FLAGS_NOT_AVAILABLE.
* dwarf_init_finish.c: Use new (global) function pointer
_dwarf_get_elf_flags_func_ptr
to access extra Elf data without breaking compatibility.
Add additional way (SHF_COMPRESSED) to detect zlib
compression and expand the compressed data.
2016-02-08 David Anderson
* dwarf_alloc.c: Drop VALTYPE, use DW_TSHASHTYPE instead.
Use DW_TSHASHTYPE in the hash functions.
* dwarf_tied.c: Use DW_TSHASHTYPE in the hash function.
* dwarf_tsearchhash.c: Add back the UNUSEDARG to avoid
unused argument warnings.
2016-02-07 David Anderson
* dwarf_init_finish.c: Fix indents. remove a trailing space.
* dwarf_tsearch.h,dwarf_tsearchhash.c: Now DW_TSHASHTYPE (if not defined
otherwise) defines the type returned by the hash function
used in tsearchhash.
* pro_alloc.c: Removed trailing whitespace.
2016-02-07 David Anderson
* README: Mention
* dwarf_init_finish.c: If SHT_RELA not defined define it as 4
in hopes that will not cause trouble for mingw. For Elf
objects 4 is the correct value and is defined in elf.h
2016-02-06 David Anderson
* dwarf_elf_access.c,dwarf_original_elf_init.c,dwarf_tsearchhash.c,
libdwarfdefs.h: Remove trailing whitespace.
2016-02-06 David Anderson
* configure.in: defines HAVE_UNUSED_ATTRIBUTE
if the gcc '__attribute__ ((unused))' compiles ok.
* config.h.in, configure: Regenerated.
* libdwarfdefs.h: Test HAVE_UNUSED_ATTRIBUTE and define
UNUSEDARG appropriately.
* dwarf_alloc.c,dwarf_elf_access.c,dwarf_form.c,dwarf_frame2.c,
dwarf_gdbindex.c,dwarf_global.c,dwarf_init_finish.c,dwarf_line.c,
dwarf_line_table_reader_common.c,dwarf_macro5.c,
dwarf_original_elf_init.c,dwarf_print_lines.c,dwarf_ranges.c,
dwarf_tsearchhash.c,dwarf_util.c,dwarf_xu_index.c,
pro_alloc.c,pro_frame.c,pro_init.c,pro_reloc.c,
pro_reloc_stream.c,pro_section.c: Use UNUSEDARG to suppress
meaningless unused-parameter warnings from gcc.
2016-02-06 David Anderson
* dwarf_tsearchhash.c: The original default
hash table size (a prime number) was very small. Now its
closer to 100.
2016-02-06 David Anderson
* dwarf_frame.h: Added fde_fd_eh_table_value.
Added fde->fd_gnu_eh_aug_present so presence/absence
is unambiguous.
* dwarf_frame.c: Added code to set fd_eh_table_value when
appropriate, though there is no interface for dwarfdump to
get the value yet.
* dwarf_frame2.c: Update the new fields appropriately.
Corrected some comments about the eh_frame cie_id field.
2016-02-05 David Anderson
* dwarf_frame2.c: Comments in get_cieptr_given_offset()
were slightly incorrect and one calculation was pointlessly
full of casts. Fixed commentary about the CIE_pointer
(CIE id or FDE id) field in a frame header.
* dwarf_loc2.c: Fixed compiler warning on signed/unsigned
comparison by changing local variable int->Dwarf_Unsigned..
* pro_init.c: Removed extraneous semicolon to avoid
warning for C90.
2016-01-26 David Anderson
* dwarf_abbrev.c: Remove useless blank line.
* dwarf_macro5.c: Add check for macro_import offset correctness.
2016-01-21 David Anderson
* libdwarf.h.in: Typo, */* fixed to be * /*
* configure.in: Added new gcc compiler options to --enable-wall.
* configure: regenerated.
* dwarf_die_deliv.c dwarf_frame.c,dwarf_frame2.c,dwarf_gdbindex.c,
dwarf_gdbindex.h,dwarf_line.c,dwarf_line.h,
dwarf_line_table_reader_common.c,dwarf_macro5.c,dwarf_query.c,
dwarf_tsearchhash.c: Eliminated use of int/Dwarf_Signed
in favor of unsigned types where
signed served no purpose. Added ommitted return DW_DLV_NO_ERROR
in dwarf_frame2.c. Other than 'unused parameter' fixed
the warnings from gcc.
No interfaces changed though. To keep binary compatibility.
2016-01-20 David Anderson
* dwarf_query.c: New function dwarf_die_text() is a general way
to get strings from various attributes in a DIE.
* libdwarf.h.in: Add prototype for dwarf_die_text().
* libdwarf2.1.mm: Document dwarf_die_text().
* libdwarf2.1.pdf: Regenerated. Version 2.40.
2016-01-19 David Anderson
* Makefile.in: Remove dwarf_stubs.o.
* configure.in: Add various gcc opts to --enable-wall
to get appropriate coverage.
* configure: regenerated.
* dwarf_macro5.c: File-local functions now declared static.
* dwarf_query.c: File-local functions now declared static.
* dwarf_stubs.c: No longer this function. It never had a prototype
declaration and never had more than return DW_DLV_ERROR as
an implementation.
* dwarf_util.c: Remove trailing whitespace.
* dwarf_original_elf_init.c(dwarf_set_tied_dbg): Added
check for null dbg.
* dwgetopt.c: Add include of dwgetopt.h. #if 0 a testing-only function.
All functions prototyped, no ().
* libdwarf.h.in: Comment out argument names for safety.
Added dwarf_get_tied_dbg(), dwarf_dietype_offset(),
dwarf_pubtype_type_die_offset() declarations.
Sorted the dwarf_get_TAG_name() etc function names.
* pro_alloc.c: Documented and commented a useless function,
dwarf_p_dealloc(). .
* pro_alloc.h: Prototyped both the useful and useless
global-to-libdwarf producer
functions _dwarf_p_dealloc and dwarf_p_dealloc.
* libdwarf2.1.mm: Documented dwarf_get_tied_dbg(),
dwarf_fde_section_offset(), and dwarf_cie_section_offset()
* libdwarf2.1.pdf: Regenerated. Rev 2.39
2016-01-19 David Anderson
* dwarf_form.c,dwarf_macro5.c: Ensure declarations
before executable statements
* dwarf_loc.c: Cast pointer to Dwarf_Small* so pointer arithmetic
works (standard conformance).
Ensure declarations before executable statements
* dwarf_macro5.c: Ensure declarations before executable statements.
* dwarf_query.c: Ensure declarations before executable statements.
Add dwarf_dietype_offset() convenience function.
* dwarf_util.c: Use a local name that does not conflict
with standards. use mydw_errno, not errno.
* dwarf_frame2.c(dwarf_read_cie_fde_prefix): Add tests
to ensure we do not access past end of a section.
2016-01-19 David Anderson
* dwarf_form.c, dwarf_frame2.c,: Fix indentation and trailing whitespace.
2016-01-19 David Anderson
* dwarf_line.c, dwarf_line_table_reader_common.c,
dwarf_loc.c, dwarf_macro5.c, dwarf_query.c, pro_die.c:
Remove silly second ; from ;; where appropriate.
2016-01-19 David Anderson
* libdwarf.h.in, dwarf_error.c: New error numbers.
DW_DLE_LINE_STRP_OFFSET_BAD, DW_DLE_STRING_FORM_IMPROPER.
* dwarf_form.c: Added suport for DW_FORM_line_strp into
dwarf_form_string().
2016-01-17 David Anderson
* dwarf_frame2.c: Added additional checks for
bad frame section. Looking for premature end of frame data.
2016-01-16 David Anderson
* libdwarf2.1.mm: Documented DWARF5 macro operations.
Version 2.38
* libdwarf2.1.pdf: Regenerated.
* libdwarf2p.1.pdf: Regenerated following a trivial
clarification on cie production made a couple days ago.
2016-01-15 David Anderson
* pro_frame.h, pro_frame.c: The code adding a CIE for output
(dwarf_add_frame_cie())
was simply assuming that the augmentation string passed in was
in stable storage. Now it uses strdup() to guarantee there
no surprises.
2016-01-14 David Anderson
* dwarf_query.c(dwarf_die_offsets): 'res ==' corrected to 'res ='.
2016-01-12 David Anderson
* dwarf_macro5.c: Fixed DW_MACRO_define/undef
calls of _dwarf_check_string_valid().
Arranged to get the macro unit offset out
when creating context.
* libdwarf.h.in: Fixed declaration of dwarf_get_macro_context()
to get the macro unit offset out of it
so it can work properly in all contexts.