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| -rw-r--r-- | gdb/doc/ChangeLog | 5 | ||||
| -rw-r--r-- | gdb/doc/stabs.texinfo | 14 |
2 files changed, 19 insertions, 0 deletions
diff --git a/gdb/doc/ChangeLog b/gdb/doc/ChangeLog index b17deb5..ecc2b69 100644 --- a/gdb/doc/ChangeLog +++ b/gdb/doc/ChangeLog @@ -1,3 +1,8 @@ +Thu May 5 20:23:36 1994 Stan Shebs (shebs@andros.cygnus.com) + + * stabs.texinfo (Stab Section Basics): Add comment about alignment + of stabs-in-coff sections. + Wed May 4 06:26:11 1994 Jim Kingdon (kingdon@lioth.cygnus.com) * annotate.texi: Change edition to 0.5 and date to May 1994. diff --git a/gdb/doc/stabs.texinfo b/gdb/doc/stabs.texinfo index 3d68856..8a8baf3 100644 --- a/gdb/doc/stabs.texinfo +++ b/gdb/doc/stabs.texinfo @@ -3936,6 +3936,8 @@ Offset in the @code{.stabstr} section to the source filename. @item n_other Unused field, always zero. +This may eventually be used to hold overflows from the count in +the @code{n_desc} field. @item n_desc Count of upcoming symbols, i.e., the number of remaining stabs for this @@ -3957,6 +3959,18 @@ header @code{sh_type} member set to @code{SHT_STRTAB} to mark it as a string table. SOM and COFF have no way of linking the sections together or marking them as string tables. +For COFF, the @code{.stab} and @code{.stabstr} sections are simply +concatenated by the linker. GDB then uses the @code{n_desc} fields to +figure out the extent of the original sections. Similarly, the +@code{n_value} fields of the header symbols are added together in order +to get the actual position of the strings in a desired @code{.stabstr} +section. Although this design obviates any need for the linker to relocate +or otherwise manipulate @code{.stab} and @code{.stabstr} sections, it also +requires some care to ensure that the offsets are calculated correctly. +For instance, if the linker were to pad in between the @code{.stabstr} +sections before concatenating, then the offsets to strings in the middle +of the executable's @code{.stabstr} section would be wrong. + @node ELF Linker Relocation @appendixsec Having the Linker Relocate Stabs in ELF |