This commit documents the new command line options introduced by the
CTF and BTF debug formats.
2021-06-28 Indu Bhagat <indu.bha...@oracle.com>
* doc/invoke.texi: Document the CTF and BTF debug info options.
---
gcc/doc/invoke.texi | 32 +++++++++++++++++++++++++++++++-
1 file changed, 31 insertions(+), 1 deletion(-)
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index af2ce189fae..2dc6a2106d9 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -466,6 +466,7 @@ Objective-C and Objective-C++ Dialects}.
@item Debugging Options
@xref{Debugging Options,,Options for Debugging Your Program}.
@gccoptlist{-g -g@var{level} -gdwarf -gdwarf-@var{version} @gol
+-gbtf -gctf -gctf@var{level} @gol
-ggdb -grecord-gcc-switches -gno-record-gcc-switches @gol
-gstabs -gstabs+ -gstrict-dwarf -gno-strict-dwarf @gol
-gas-loc-support -gno-as-loc-support @gol
@@ -9647,7 +9648,9 @@ in the ``exploded graph'' and diagnostics associated with
them.
@cindex debugging information options
To tell GCC to emit extra information for use by a debugger, in almost
-all cases you need only to add @option{-g} to your other options.
+all cases you need only to add @option{-g} to your other options. Some debug
+formats can co-exist (like DWARF with CTF) when each of them is enabled
+explicitly by adding the respective command line option to your other options.
GCC allows you to use @option{-g} with
@option{-O}. The shortcuts taken by optimized code may occasionally
@@ -9708,6 +9711,33 @@ other DWARF-related options such as
@option{-fno-dwarf2-cfi-asm}) retain a reference to DWARF Version 2
in their names, but apply to all currently-supported versions of DWARF.
+@item -gbtf
+@opindex gbtf
+Request BTF debug information. BTF is the default debugging format for the
+eBPF target. On other targets, like x86, BTF debug information can be
+generated along with DWARF debug information when both of the debug formats are
+enabled explicitly via their respective command line options.
+
+@item -gctf
+@itemx -gctf@var{level}
+@opindex gctf
+Request CTF debug information and use level to specify how much CTF debug
+information should be produced. If @option{-gctf} is specified
+without a value for level, the default level of CTF debug information is 2.
+
+CTF debug information can be generated along with DWARF debug information when
+both of the debug formats are enabled explicitly via their respective command
+line options.
+
+Level 0 produces no CTF debug information at all. Thus, @option{-gctf0}
+negates @option{-gctf}.
+
+Level 1 produces CTF information for tracebacks only. This includes callsite
+information, but does not include type information.
+
+Level 2 produces type information for entities (functions, data objects etc.)
+at file-scope or global-scope only.
+
@item -gstabs
@opindex gstabs
Produce debugging information in stabs format (if that is supported),
--
2.25.0.2.g232378479e
