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|
#!/usr/bin/perl
# IBM_PROLOG_BEGIN_TAG
# This is an automatically generated prolog.
#
# $Source: src/build/debug/Hostboot/ContTrace.pm $
#
# OpenPOWER HostBoot Project
#
# COPYRIGHT International Business Machines Corp. 2012,2014
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
# implied. See the License for the specific language governing
# permissions and limitations under the License.
#
# IBM_PROLOG_END_TAG
use strict;
package Hostboot::ContTrace;
use Exporter;
our @EXPORT_OK = ('main');
use constant CONT_TRACE_ENABLE_FLAG_OFFSET => 0;
use constant CONT_TRACE_BUFFER_SIZE => CONT_TRACE_ENABLE_FLAG_OFFSET + 2;
use constant CONT_TRACE_BUFFER_ADDR => CONT_TRACE_BUFFER_SIZE + 6;
use File::Temp ('tempfile');
sub main
{
my ($packName,$args) = @_;
#::userDisplay("args fsp-trace ".$args->{"fsp-trace"}."\n");
#::userDisplay("args with-file-names ".$args->{"with-file-names"}."\n");
if (not defined $args->{"fsp-trace"})
{
$args->{"fsp-trace"} = "fsp-trace";
}
my $dbgMsg = 0;
if (defined $args->{"debug"})
{
$dbgMsg = 1;
}
my $fsptrace_options = "";
if (defined $args->{"with-file-names"})
{
$fsptrace_options = $fsptrace_options."-f ";
}
my $symAddr = 0;
my $symSize = 0;
($symAddr, $symSize) = ::findSymbolAddress("TRACE::g_debugSettings");
if (not defined $symAddr)
{
::userDisplay "Cannot find symbol: TRACE::g_debugSettings.\n"; die;
}
if (defined $args->{"enable-cont-trace"})
{
my $new_enable = $args->{"enable-cont-trace"};
$new_enable = $new_enable ? 2 : 1;
my $enable = ::read8($symAddr + CONT_TRACE_ENABLE_FLAG_OFFSET);
if ($dbgMsg)
{
::userDisplay("current Cont Trace Enable Flag = $enable\n");
}
if (($enable < 2) && ($new_enable == 2))
{
# truncate tracMERG to 0
system( "cp /dev/null tracMERG" );
}
::write8($symAddr + CONT_TRACE_ENABLE_FLAG_OFFSET, $new_enable);
if ($dbgMsg)
{
$new_enable = ::read8($symAddr+CONT_TRACE_ENABLE_FLAG_OFFSET);
::userDisplay("new Cont Trace Enable Flag = $new_enable\n");
}
return;
}
my $trigger = ::readScom(0x00050038);
if ($dbgMsg)
{
::userDisplay("$trigger...\n");
my $cycles = `simgetcurrentcycle`;
$cycles =~ s/\n//g;
$cycles =~ s/.*is ([0-9]*).*/$1/g;
::userDisplay("$cycles\n");
$cycles = `date`;
::userDisplay("$cycles");
}
if (0 == $trigger)
{
if ($dbgMsg)
{
::userDisplay("No new trace to gather.\n");
}
return;
}
my $fh;
my $fname;
($fh,$fname) = tempfile();
binmode($fh);
my $buffAddr = ::read64($symAddr + CONT_TRACE_BUFFER_ADDR);
my $buffSize = ::read16($symAddr + CONT_TRACE_BUFFER_SIZE);
print $fh (::readData($buffAddr, $buffSize));
if ($dbgMsg)
{
my $cycles = `simgetcurrentcycle`;
$cycles =~ s/\n//g;
$cycles =~ s/.*is ([0-9]*).*/$1/g;
::userDisplay("$cycles\n");
}
::writeScom(0x00050038, 0x0);
open TRACE, ($args->{"fsp-trace"}." -s ".::getImgPath().
"hbotStringFile $fsptrace_options $fname |") || die;
while (my $line = <TRACE>)
{
::userDisplay $line;
}
unlink $fname;
if ($dbgMsg)
{
my $cycles = `date`;
::userDisplay("$cycles");
}
}
sub helpInfo
{
my %info = (
name => "ContTrace",
intro => ["Displays the continuous trace buffers."],
options => {
"fsp-trace=<path>" => ["Path to non-default fsp-trace utility."],
"with-file-names" => ["Trace statements will include file name of place the",
"trace was defined."],
"enable-cont-trace=<1|0>" => ["Turn on|off continuous trace"],
"debug" => ["Turn on debug messages"],
}
);
}
|
