diff options
Diffstat (limited to 'qemu/scripts/switch-timer-api')
| -rwxr-xr-x | qemu/scripts/switch-timer-api | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/qemu/scripts/switch-timer-api b/qemu/scripts/switch-timer-api new file mode 100755 index 000000000..b0e230b9f --- /dev/null +++ b/qemu/scripts/switch-timer-api @@ -0,0 +1,178 @@ +#!/usr/bin/perl + +use strict; +use warnings; +use Getopt::Long; +use FindBin; + +my @legacy = qw(qemu_clock_ptr qemu_get_clock_ns qemu_get_clock_ms qemu_register_clock_reset_notifier qemu_unregister_clock_reset_notifier qemu_new_timer qemu_free_timer qemu_del_timer qemu_mod_timer_ns qemu_mod_timer qemu_run_timers qemu_new_timer_ns qemu_new_timer_us qemu_new_timer_ms); +my $legacyre = '\b('.join('|', @legacy).')\b'; +my $option_git; +my $option_dryrun; +my $option_quiet; +my $option_rtc; +my $suffix=".tmp.$$"; +my @files; +my $getfiles = 'git grep -l -E \'\b((host|rt|vm|rtc)_clock\b|qemu_\w*timer)\' | egrep \'\.[ch]$\' | egrep -v \'qemu-timer\.c$|include/qemu/timer\.h$\''; + +sub Syntax +{ + print STDERR <<STOP; +Usage: $FindBin::Script [options] FILE ... + +Translate each FILE to the new QEMU timer API. If no files +are passed, a reasonable guess is taken. + +Options: + -q, --quiet Do not show warnings etc + -d, --dry-run Do a dry run + -g, --git Generate a git commit for each change + -r, --rtc Only fix up rtc usage + -h, --help Print this message + +STOP +return; +} + +sub ParseOptions +{ + if (!GetOptions ( + "dry-run|d" => \$option_dryrun, + "git|g" => \$option_git, + "quiet|q" => \$option_quiet, + "rtc|r" => \$option_rtc, + "help|h" => sub { Syntax(); exit(0); } + )) + { + Syntax(); + die "Bad options"; + } + + if ($#ARGV >=0) + { + @files = @ARGV; + } + else + { + @files = split(/\s+/, `$getfiles`); + } + + foreach my $file (@files) + { + die "Cannot find $file" unless (-f $file && -r $file); + } +} + +sub DoWarn +{ + my $text = shift @_; + my $line = shift @_; + return if ($option_quiet); + chomp ($line); + print STDERR "$text\n"; + print STDERR "$line\n\n"; +} + +sub Process +{ + my $ifn = shift @_; + my $ofn = $ifn.$suffix; + + my $intext; + my $outtext; + my $linenum = 0; + + open my $input, "<", $ifn || die "Cannot open $ifn for read: $!"; + + while (<$input>) + { + my $line = $_; + $intext .= $line; + $linenum++; + + # fix the specific uses + unless ($option_rtc) + { + $line =~ s/\bqemu_new_timer(_[num]s)\s*\((vm_|rt_|host_)clock\b/timer_new$1(XXX_$2clock/g; + $line =~ s/\bqemu_new_timer\s*\((vm_|rt_|host_)clock\b/timer_new(XXX_$1clock/g; + $line =~ s/\bqemu_get_clock(_[num]s)\s*\((vm_|rt_|host_)clock\b/qemu_clock_get$1(XXX_$2clock/g; + } + + # rtc is different + $line =~ s/\bqemu_new_timer(_[num]s)\s*\(rtc_clock\b/timer_new$1(rtc_clock/g; + $line =~ s/\bqemu_new_timer\s*\(rtc_clock\b/timer_new(rtc_clock/g; + $line =~ s/\bqemu_get_clock(_[num]s)\s*\(rtc_clock\b/qemu_clock_get$1(rtc_clock/g; + $line =~ s/\bqemu_register_clock_reset_notifier\s*\(rtc_clock\b/qemu_register_clock_reset_notifier(qemu_clock_ptr(rtc_clock)/g; + + unless ($option_rtc) + { + # fix up comments + $line =~ s/\b(vm_|rt_|host_)clock\b/XXX_$1clock/g if ($line =~ m,^[/ ]+\*,); + + # spurious fprintf error reporting + $line =~ s/: qemu_new_timer_ns failed/: timer_new_ns failed/g; + + # these have just changed name + $line =~ s/\bqemu_mod_timer\b/timer_mod/g; + $line =~ s/\bqemu_mod_timer_(ns|us|ms)\b/timer_mod_$1/g; + $line =~ s/\bqemu_free_timer\b/timer_free/g; + $line =~ s/\bqemu_del_timer\b/timer_del/g; + } + + # fix up rtc_clock + $line =~ s/QEMUClock \*rtc_clock;/QEMUClockType rtc_clock;/g; + $line =~ s/\brtc_clock = (vm_|rt_|host_)clock\b/rtc_clock = XXX_$1clock/g; + + unless ($option_rtc) + { + # replace any more general uses + $line =~ s/\b(vm_|rt_|host_)clock\b/qemu_clock_ptr(XXX_$1clock)/g; + } + + # fix up the place holders + $line =~ s/\bXXX_vm_clock\b/QEMU_CLOCK_VIRTUAL/g; + $line =~ s/\bXXX_rt_clock\b/QEMU_CLOCK_REALTIME/g; + $line =~ s/\bXXX_host_clock\b/QEMU_CLOCK_HOST/g; + + unless ($option_rtc) + { + DoWarn("$ifn:$linenum WARNING: timer $1 not fixed up", $line) if ($line =~ /\b((vm_|rt_|host_)clock)\b/); + DoWarn("$ifn:$linenum WARNING: function $1 not fixed up", $line) if ($line =~ /\b(qemu_new_timer\w+)\b/); + DoWarn("$ifn:$linenum WARNING: legacy function $1 remains", $line) if ($line =~ /$legacyre/o); + } + + $outtext .= $line; + } + + close $input; + + if ($intext ne $outtext) + { + print STDERR "Patching $ifn\n" unless ($option_quiet); + unless ($option_dryrun) + { + open my $output, ">", $ofn || die "Cannot open $ofn for write: $!"; + print $output $outtext; + close $output; + rename ($ofn, $ifn) || die "Cannot rename temp file to $ifn: $!"; + return 1; + } + } + return 0; +} + +sub DoCommit +{ + my $file = shift @_; + open (my $git, "| git commit -F - $file") || die "Cannot run git commit on $file: $!"; + print $git "timers api: use new timer api in $file\n\nConvert $file to use new timer API.\nThis is an automated commit made by scripts/switch-timer-api\n"; + close ($git); +} + +ParseOptions; + +foreach my $file (@files) +{ + my $changed = Process ($file); + DoCommit($file) if ($changed && $option_git); +} |