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