information for the compilation unit that is normally found
in the \dotdebuginfo{} section.
\item
-\dotdebuglocdwo{} - Contains the location lists referenced by
+\dotdebugloclistsdwo{} - Contains the location lists referenced by
the debugging information entries in the \dotdebuginfodwo{}
section. This contains the location lists normally found in
-the \dotdebugloc{} section, with a
+the \dotdebugloclists{} section, with a
modified format to eliminate the need for relocations.
\item
\dotdebugstrdwo{} - Contains the string table for all indirect
The section header refers to a
compilation unit offset, which is the offset of the
skeleton compilation unit in the \dotdebuginfo{} section.
-\item
-\dotdebugranges{} - Contains the range lists.
+\bbeb
\item
\dotdebugstr{} - Contains any strings referenced by the skeleton
\dotdebuginfo{} sections (via \DWFORMstrp{} or \DWFORMstrx{}).
\DWAThighpc{},
\DWATlowpc{},
\DWATranges{},
-\DWATrangesbase{},
+\bbeb
\DWATstmtlist{},
\DWATstroffsetsbase{}
}
one \dotdwo{} section to another \dotdwo{} section
in the same compilation unit.
-\item Some values that need a relocation to refer to a
-relocatable program address use the \DWFORMaddrx{} form,
-referencing a relocatable value in the \dotdebugaddr{} section (which
-remains in the \texttt{.o} file).
-
-\item Some values that need a relocation to refer to the
-\dotdebugranges{} section in the \texttt{.o} file use a relocatable base
-specified by the \DWATrangesbase{} attribute (which is placed in the
-skeleton compilation unit in the \texttt{.o} file).
+\item Some values that need a relocation to refer to a relocatable
+program address use the \DWFORMaddrx{} form, referencing a relocatable
+value in the \dotdebugaddr{} section (which remains in the .o file).
+\bbpareb
\end{enumerate}
\hline
\DWATlanguage & \chkmk & \chkmk & & \chkmk & \chkmk \\
\hline
+\bb
+\DWATloclistsbase & \chkmk & & & &
+\eb
+\\
+\hline
\DWATlowpc & \chkmk & & \chkmk & & \\
\hline
\DWATmacros & \chkmk & & & \chkmk & \\
\hline
\DWATproducer & \chkmk & & & \chkmk & \\
\hline
-\DWATranges & \chkmk & & \chkmk & & \\
+\bb
+\DWATranges \eb & \chkmk & & & \chkmk & \\
\hline
-\DWATrangesbase & \chkmk & & \chkmk & & \\
+\bb
+\DWATrnglistsbase \eb & \chkmk & & & & \\
\hline
\DWATstmtlist & \chkmk & \chkmk & \chkmk & & \chkmk \\
\hline
\begin{alltt}
\dotdebugabbrev
\dotdebuginfo
- \dotdebugranges
\dotdebugline
\dotdebugstr
\dotdebugaddr
\DWATcompdir: (reference to directory name in .debug_str)
\DWATdwoname: (reference to "demo1.dwo" in .debug_str)
\DWATaddrbase: (reference to .debug_addr section)
- \DWATrangesbase: (reference to range list in .debug_ranges section)
- \DWATranges: (offset of range list in .debug_ranges section)
\DWATstmtlist: (reference to .debug_line section)
\DWATlowpc: 0
file, and it can be used to find the debug information in a DWARF
package file.
-\needlines{4}
The \DWATaddrbase{} attribute contains the relocatable offset of
-this object file's contribution to the \dotdebugaddr{} section, and
-the \DWATrangesbase{} attribute contains the relocatable offset
-of this object file's contribution to the \dotdebugranges{} section.
-The \DWATranges{} attribute refers to a specific range list within
-that contribution, and its value is a (non-relocatable) offset
-relative to the base. In a compilation unit with a single
-contiguous range of code, the \DWATranges{} attribute might be
-omitted, and instead replaced by the pair \DWATlowpc{} and
-\DWAThighpc.
+this object file's contribution to the \dotdebugaddr{} section.
+\bbeb
The \DWATstmtlist{} attribute contains the relocatable offset of
this file's contribution to the \dotdebugline{} table.
-There is both a \DWATranges{} attribute as well as a \DWATlowpc{}
-attribute which
-provides a default base address for the range list entries in the
-\dotdebugranges{} section.
-
-The \dotdebugranges{} section contains the range list referenced by
-the \DWATranges{} attribute in the skeleton compilation unit DIE,
-plus any range lists referenced by \DWATranges{} attributes in the
-split DWARF object. In this example, \texttt{demo1.o} contains range
-list entries for the function \texttt{Box::contains}, as well as for
-out-of-line copies of the inline functions \texttt{Point::x} and
-\texttt{Point::y}.
+\bbpareb
+\needlines{6}
The \dotdebugline{} section contains the full line number table for
the compiled code in the object file. As shown in
Figure \refersec{fig:splitobjectexamplesourcefragment1}, the line
\dotdebugabbrevdwo
\dotdebuginfodwo{} (for the compilation unit)
\dotdebuginfodwo{} (one COMDAT section for each type unit)
- \dotdebuglocdwo
+ \dotdebugloclistsdwo
\dotdebuglinedwo
\dotdebugmacrodwo
+ \dotdebugrnglistsdwo
\dotdebugstroffsetsdwo
\dotdebugstrdwo
\end{alltt}
form code \DWFORMstrx, referring to slots in the
\dotdebugstroffsetsdwo{} section.
-\item References to range lists in the \dotdebugranges{} section are
-all relative to the base offset given by \DWATrangesbase{}
-in the skeleton compilation unit.
+\bbpareb
\needlines{4}
\item References to relocatable addresses in the object file
an example of a DWARF package file.
\needlines{4}
-The \dotdebuglocdwo{} section contains the location lists referenced
+The \dotdebugloclistsdwo{} section contains the location lists referenced
by \DWATlocation{} attributes in the \dotdebuginfodwo{} section. This
-section has a similar format to the \dotdebugloc{} section in a
+section has a similar format to the \bbeb\dotdebugloclists{} section in a
non-split object, but it has some small differences as explained
-in Section \refersec{datarep:locationlistentriesinsplitobjects}.
+in Section \refersec{datarep:locationlists}.
\begin{figure}[b]
\figurepart{1}{2}
refers to the location list at offset \texttt{0x49}.
Figure \refersec{fig:splitobjectexampledemotwodwodwarfdebuglocdwoexcerpts}
shows a representation of the
-location lists at those offsets in the \dotdebuglocdwo{} section.
+location lists at those offsets in the \dotdebugloclistsdwo{} section.
% Special commands for use in the folloing table
-\newcommand{\XXLLEsl}{\hyperlink{chap:DWLLEstartlengthentry}{start\_length\_entry}
- \index{DW\_LLE\_start\_length\_entry}}
-\newcommand{\XXLLEeol}{\hyperlink{chap:DWLLEendoflistentry}{end\_of\_list\_entry}
- \index{DW\_LLE\_end\_of\_list\_entry}}
+\newcommand{\XXLLEsl}{\hyperlink{chap:DWLLEstartlength}{start\_length}
+ \index{DW\_LLE\_start\_length}}
+\newcommand{\XXLLEeol}{\hyperlink{chap:DWLLEendoflist}{end\_of\_list}
+ \index{DW\_LLE\_end\_of\_list}}
\begin{figure}[ht]
\begin{dwflisting}
+\begin{center}
\begin{tabular}{rl|rr|rl}
- & entry type & \multicolumn{2}{c}{range}
- & \multicolumn{2}{l}{\hspace{6mm}location} \\
-offset & (DW\_LLE\_*) & start & length & length & expression \\
+ \multicolumn{2}{c}{\textbf{Entry type}}
+ & \multicolumn{2}{c}{\textbf{Range}}
+ & \multicolumn{2}{l}{\hspace{6mm}\textbf{Counted Location Description}} \\
+offset& (DW\_LLE\_*)
+ & start& length & length & expression \\
\hline
&&&&& \\
0x5c & \XXLLEeol &&&& \\
&&&& \\
\end{tabular}
+\end{center}
\end{dwflisting}
-\caption{Split object example: \texttt{demo2.dwo} DWARF \dotdebuglocdwo{} excerpts}
+\caption{Split object example: \texttt{demo2.dwo} DWARF \dotdebugloclistsdwo{} excerpts}
\label{fig:splitobjectexampledemotwodwodwarfdebuglocdwoexcerpts}
\end{figure}
-In each \DWLLEstartlengthentry{}, the start field is the index
+\bb
+In each \DWLLEstartlength{} entry,
+\eb
+the start field is the index
of a slot in the \dotdebugaddr{} section, relative to the base
offset defined by the compilations unit's \DWATaddrbase{}
attribute. The \dotdebugaddr{} slots referenced by these entries give
type unit for class \texttt{Point} from \texttt{demo1.dwo} \newline
type unit for class \texttt{Line} from \texttt{demo2.dwo} \\
\hline
- \dotdebuglocdwo{}
-& \dotdebuglocdwo{} from \texttt{demo1.dwo} \newline
- \dotdebuglocdwo{} from \texttt{demo2.dwo} \\
+ \dotdebugloclistsdwo{}
+& \dotdebugloclistsdwo{} from \texttt{demo1.dwo} \newline
+ \dotdebugloclistsdwo{} from \texttt{demo2.dwo} \\
\hline
\dotdebuglinedwo{}
& \dotdebuglinedwo{} from \texttt{demo1.dwo} \newline
\end{figure}
\needlines{4}
-The \dotdebugabbrevdwo{}, \dotdebuglocdwo{} and \dotdebuglinedwo{}
+The \dotdebugabbrevdwo{}, \dotdebugloclistsdwo{} and \dotdebuglinedwo{}
sections are copied over from the two \texttt{.dwo} files as
individual contributions to the corresponding sections in the
\texttt{.dwp} file.
reference to a location list at offset 0x49 (decimal 73). Because
this is part of the compilation unit for \texttt{demo2.dwo}, with
unit signature \texttt{0xb5f0ecf455e7e97e}, we see that its contribution
-to \dotdebuglocdwo{} begins at offset 84, so the location list from
+to \dotdebugloclistsdwo{} begins at offset 84, so the location list from
Figure \refersec{fig:splitobjectexampledemotwodwodwarfdebuglocdwoexcerpts}
can be found in \texttt{demo.dwp} at offset 157 (84 + 73) in
-the combined \dotdebuglocdwo{} section.
+the combined \dotdebugloclistsdwo{} section.
\begin{figure}[ht]
\begin{center}
DWARF Git Projects / dwarf-doc.git / blobdiff