Both current lld and the next version of ld have an option -pdb, which
creates a PDB file which Microsoft's debuggers can use. This patch adds
a -gcodeview option, which passes this to the linker.
I do intend to expand this so it also creates the .debug$S and .debug$T
sections which would make this useful - I submitted patches for this a
while back, but they need to be rewritten to parse the DWARF DIEs rather
than using debug_hooks.
Clang also has -gcodeview, but AFAICS only uses it for .debug$S and
.debug$T, and doesn't use it for linker options (though IMO it probably
should).
---
gcc/common.opt | 4 ++++
gcc/doc/invoke.texi | 7 +++++++
gcc/gcc.cc | 4 ++++
gcc/opts.cc | 3 +++
4 files changed, 18 insertions(+)
diff --git a/gcc/common.opt b/gcc/common.opt
index 8a0dafc522d..77103f961d8 100644
--- a/gcc/common.opt
+++ b/gcc/common.opt
@@ -3253,6 +3253,10 @@ gas-locview-support
Common Driver Var(dwarf2out_as_locview_support)
Assume assembler support for view in (DWARF2+) .loc directives.
+gcodeview
+Common Driver JoinedOrMissing
+Generate debug information in CodeView format.
+
gcoff
Common Driver WarnRemoved
Does nothing. Preserved for backward compatibility.
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index ff6c338bedb..2d29fd2611d 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -483,6 +483,7 @@ Objective-C and Objective-C++ Dialects}.
-gstabs -gstabs+ -gstrict-dwarf -gno-strict-dwarf @gol
-gas-loc-support -gno-as-loc-support @gol
-gas-locview-support -gno-as-locview-support @gol
+-gcodeview @gol
-gcolumn-info -gno-column-info -gdwarf32 -gdwarf64 @gol
-gstatement-frontiers -gno-statement-frontiers @gol
-gvariable-location-views -gno-variable-location-views @gol
@@ -10358,6 +10359,12 @@ assembler (GAS) to fail with an error.
Produce debugging information in Alpha/VMS debug format (if that is
supported). This is the format used by DEBUG on Alpha/VMS systems.
+@item -gcodeview
+@opindex gcodeview
+Produce debugging information in CodeView debug format (if that is
+supported). This is the format used by Microsoft Visual C++ on
+Windows.
+
@item -g@var{level}
@itemx -ggdb@var{level}
@itemx -gstabs@var{level}
diff --git a/gcc/gcc.cc b/gcc/gcc.cc
index bb07cc244e3..2820f325282 100644
--- a/gcc/gcc.cc
+++ b/gcc/gcc.cc
@@ -4608,6 +4608,10 @@ driver_handle_option (struct gcc_options *opts,
do_save = false;
break;
+ case OPT_gcodeview:
+ add_infile ("-pdb=", "*");
+ break;
+
default:
/* Various driver options need no special processing at this
point, having been handled in a prescan above or being
diff --git a/gcc/opts.cc b/gcc/opts.cc
index 3a89da2dd03..e2633ee5439 100644
--- a/gcc/opts.cc
+++ b/gcc/opts.cc
@@ -3089,6 +3089,9 @@ common_handle_option (struct gcc_options *opts,
set_debug_level (NO_DEBUG, 2, arg, opts, opts_set, loc);
break;
+ case OPT_gcodeview:
+ break;
+
case OPT_gstabs:
case OPT_gstabs_:
set_debug_level (DBX_DEBUG, code == OPT_gstabs_, arg, opts, opts_set,
--
2.37.3
