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| author | Nick Clifton <nickc@redhat.com> | 2015-03-05 12:14:26 +0000 |
|---|---|---|
| committer | Nick Clifton <nickc@redhat.com> | 2015-03-05 12:14:26 +0000 |
| commit | 425bd9e1bb32b25881dd20d76678d041f7bf04f8 (patch) | |
| tree | e503906efb4cab1957e3a053fda5d5b8c854bb13 /bfd/coffgen.c | |
| parent | f5771b1d96f844e0767a15b258b2de2d4cc52123 (diff) | |
| download | gdb-425bd9e1bb32b25881dd20d76678d041f7bf04f8.zip gdb-425bd9e1bb32b25881dd20d76678d041f7bf04f8.tar.gz gdb-425bd9e1bb32b25881dd20d76678d041f7bf04f8.tar.bz2 | |
Allows the binutils to cope with PE binaries where the section addresses have been changed, but the DWARF debug info has not been altered.
PR binutils/18025
* coffgen.c (coff_find_nearest_line_with_names): If the dwarf2
lookup fails, check for an address bias in the dwarf info, and if
one exists, retry the lookup with the biased value.
* dwarf2.c (_bfd_dwarf2_find_symbol_bias): New function.
Determines if a bias exists bewteen the addresses of functions
based on DWARF information vs symbol table information.
* libbfd-in.h (_bfd_dwarf2_find_symbol_bias): Prototype.
* libbfd.h: Regenerate.
Diffstat (limited to 'bfd/coffgen.c')
| -rw-r--r-- | bfd/coffgen.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/bfd/coffgen.c b/bfd/coffgen.c index 83673d4..5c664a4 100644 --- a/bfd/coffgen.c +++ b/bfd/coffgen.c @@ -2245,6 +2245,26 @@ coff_find_nearest_line_with_names (bfd *abfd, &coff_data(abfd)->dwarf2_find_line_info)) return TRUE; + /* If the DWARF lookup failed, but there is DWARF information available + then the problem might be that the file has been rebased. This tool + changes the VMAs of all the sections, but it does not update the DWARF + information. So try again, using a bias against the address sought. */ + if (coff_data (abfd)->dwarf2_find_line_info != NULL) + { + bfd_signed_vma bias; + + bias = _bfd_dwarf2_find_symbol_bias (symbols, + & coff_data (abfd)->dwarf2_find_line_info); + + if (bias + && _bfd_dwarf2_find_nearest_line (abfd, symbols, NULL, section, + offset + bias, + filename_ptr, functionname_ptr, + line_ptr, NULL, debug_sections, 0, + &coff_data(abfd)->dwarf2_find_line_info)) + return TRUE; + } + *filename_ptr = 0; *functionname_ptr = 0; *line_ptr = 0; |