1#!/usr/bin/env python 2# -*- coding: utf-8 -*- 3 4""" 5trace/generated-tracers.h 6""" 7 8__author__ = "Lluís Vilanova <vilanova@ac.upc.edu>" 9__copyright__ = "Copyright 2012-2017, Lluís Vilanova <vilanova@ac.upc.edu>" 10__license__ = "GPL version 2 or (at your option) any later version" 11 12__maintainer__ = "Stefan Hajnoczi" 13__email__ = "stefanha@linux.vnet.ibm.com" 14 15 16from tracetool import out 17 18 19def generate(events, backend, group): 20 if group == "root": 21 header = "trace/control-vcpu.h" 22 else: 23 header = "trace/control.h" 24 25 out('/* This file is autogenerated by tracetool, do not edit. */', 26 '', 27 '#ifndef TRACE_%s_GENERATED_TRACERS_H' % group.upper(), 28 '#define TRACE_%s_GENERATED_TRACERS_H' % group.upper(), 29 '', 30 '#include "%s"' % header, 31 '') 32 33 for e in events: 34 out('extern TraceEvent %(event)s;', 35 event = e.api(e.QEMU_EVENT)) 36 37 for e in events: 38 out('extern uint16_t %s;' % e.api(e.QEMU_DSTATE)) 39 40 # static state 41 for e in events: 42 if 'disable' in e.properties: 43 enabled = 0 44 else: 45 enabled = 1 46 if "tcg-exec" in e.properties: 47 # a single define for the two "sub-events" 48 out('#define TRACE_%(name)s_ENABLED %(enabled)d', 49 name=e.original.name.upper(), 50 enabled=enabled) 51 out('#define TRACE_%s_ENABLED %d' % (e.name.upper(), enabled)) 52 53 backend.generate_begin(events, group) 54 55 for e in events: 56 # tracer-specific dstate 57 out('', 58 '#define %(api)s() ( \\', 59 api=e.api(e.QEMU_BACKEND_DSTATE)) 60 61 if "disable" not in e.properties: 62 backend.generate_backend_dstate(e, group) 63 64 out(' false)') 65 66 # tracer without checks 67 out('', 68 'static inline void %(api)s(%(args)s)', 69 '{', 70 api=e.api(e.QEMU_TRACE_NOCHECK), 71 args=e.args) 72 73 if "disable" not in e.properties: 74 backend.generate(e, group) 75 76 out('}') 77 78 # tracer wrapper with checks (per-vCPU tracing) 79 if "vcpu" in e.properties: 80 trace_cpu = next(iter(e.args))[1] 81 cond = "trace_event_get_vcpu_state(%(cpu)s,"\ 82 " TRACE_%(id)s)"\ 83 % dict( 84 cpu=trace_cpu, 85 id=e.name.upper()) 86 else: 87 cond = "true" 88 89 out('', 90 'static inline void %(api)s(%(args)s)', 91 '{', 92 ' if (%(cond)s) {', 93 ' %(api_nocheck)s(%(names)s);', 94 ' }', 95 '}', 96 api=e.api(), 97 api_nocheck=e.api(e.QEMU_TRACE_NOCHECK), 98 args=e.args, 99 names=", ".join(e.args.names()), 100 cond=cond) 101 102 backend.generate_end(events, group) 103 104 out('#endif /* TRACE_%s_GENERATED_TRACERS_H */' % group.upper()) 105