Mario1159/verilator
1
0
Fork 0
forked from github/verilator
Code Pull Requests Releases 1 Activity

--gdbbt now documented, and uses return-child-results

Browse Source 
Use this in first test_c to backtrace if any problems.
This commit is contained in:
Wilson Snyder 2010-12-17 20:14:25 -05:00
parent 0837e39787
commit 233ff1b744
2 changed files with 30 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
bin/verilator
View File

@ -78,15 +78,17 @@ if (! GetOptions (
}
# Determine runtime flags and run
if ($opt_gdbbt && !gdb_works()) {
warn "-Info: --gdbbt ignored: gdb doesn't seem to be working\n" if $Debug;
$opt_gdbbt = 0;
}
if ($opt_gdbbt && !$opt_gdb && $Debug) {
# Run under GDB to get gdbbt
run ("gdb ".verilator_bin()
." --batch --quiet"
." --batch --quiet --return-child-result"
." -ex 'run ".join(' ',@Opt_Verilator_Sw)."'"
." -ex 'set width 0'"
." -ex 'bt'"
." -ex 'c'");
die "%Error: --gdbbt looses the exit status; so must assume run went badly...";
." -ex 'bt'");
} else {
# Normal, non gdb
run (($opt_gdb?"$opt_gdb ":"")
@ -117,9 +119,7 @@ sub verilator_bin {
|| ($Debug ? "verilator_bin_dbg" : "verilator_bin"));
if (defined($ENV{VERILATOR_ROOT})) {
my $dir = $ENV{VERILATOR_ROOT};
if (-x "$basename") {
$bin = $basename;
} elsif (-x "$dir/bin/$basename") { # From a "make install" into VERILATOR_ROOT
if (-x "$dir/bin/$basename") { # From a "make install" into VERILATOR_ROOT
$bin = "$dir/bin/$basename";
} else {
$bin = "$dir/$basename"; # From pointing to kit directory
@ -134,6 +134,17 @@ sub verilator_bin {
#######################################################################
# Utilities
sub gdb_works {
$! = undef; # Cleanup -x
system("gdb /bin/echo"
." --batch-silent --quiet --return-child-result"
." -ex 'run -n'" # `echo -n`
." -ex 'set width 0'"
." -ex 'bt'");
my $status = $?;
return $status==0;
}
sub run {
# Run command, check errors
my $command = shift;
@ -241,6 +252,7 @@ descriptions in the next sections for more information.
--exe Link to create executable
-F <file> Parse options from a file, relatively
-f <file> Parse options from a file
--gdbbt Run Verilator under GDB for backtrace
--help Display this help.
-I<dir> Directory to search for includes
+incdir+<dir> Directory to search for includes
@ -528,6 +540,12 @@ Read the specified file, and act as if all text inside it was specified as
command line parameters. Any relative paths are relative to the current
directory. Note -f is fairly standard across Verilog tools.
=item --gdbbt
If --debug is specified, run Verilator underneath a GDB process and print
a backtrace on exit. Without --debug or if GDB doesn't seem to work, this
flag is ignored.
=item --help
Displays this message and program version and exits.

7
test_c/Makefile
View File

@ -21,7 +21,8 @@ export VERILATOR_ROOT
# Pick up PERL and other variable settings
include $(VERILATOR_ROOT)/include/verilated.mk
DEBUG_ON = --debug --trace-dups
DEBUG_QUIET = --debug --debugi 0 --gdbbt --no-dump-tree
DEBUG_ON = --debug --trace-dups --gdbbt
#DEBUG = $(DEBUG_ON)
VALGRIND_ON = $(DEBUG_ON) --gdb "valgrind -v --leak-check=yes"
@ -33,8 +34,10 @@ test_valgrind: prep_vg compile run
VERILATOR_FLAGS = --cc -f $(VERILATOR_ROOT)/test_v/input.vc top.v
VERILATOR_FLAGS += --trace
#prep: Is the very first time we've executed Verilator after building
#so we make sure to run with --gdbbt, so if it dumps we'll get a trace.
prep:
$(PERL) $(VERILATOR_ROOT)/bin/verilator $(DEBUG) $(VERILATOR_FLAGS)
$(PERL) $(VERILATOR_ROOT)/bin/verilator $(DEBUG_QUIET) $(VERILATOR_FLAGS)
prep_dbg:
$(PERL) $(VERILATOR_ROOT)/bin/verilator $(DEBUG_ON) $(VERILATOR_FLAGS)
prep_vg: