988fa10304
hw/tpm/trace-events uses TARGET_FMT_plx formats with uint64_t arguments. That's wrong, TARGET_FMT_plx takes hwaddr. Since hwaddr happens to be uint64_t, it works anyway. Messed up in commitec427498da, v2.12.0. Clean up by replacing TARGET_FMT_plx with its macro expansion. scripts/tracetool/format/log_stap.py (commit62dd1048c0, v4.0.0) has a special case for TARGET_FMT_plx. Delete it. Cc: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-Id: <20190812052359.30071-7-armbru@redhat.com>
125 lines
3.7 KiB
Python
125 lines
3.7 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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"""
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Generate .stp file that printfs log messages (DTrace with SystemTAP only).
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"""
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__author__ = "Daniel P. Berrange <berrange@redhat.com>"
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__copyright__ = "Copyright (C) 2014-2019, Red Hat, Inc."
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__license__ = "GPL version 2 or (at your option) any later version"
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__maintainer__ = "Daniel Berrange"
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__email__ = "berrange@redhat.com"
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import re
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from tracetool import out
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from tracetool.backend.dtrace import binary, probeprefix
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from tracetool.backend.simple import is_string
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from tracetool.format.stap import stap_escape
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def global_var_name(name):
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return probeprefix().replace(".", "_") + "_" + name
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STATE_SKIP = 0
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STATE_LITERAL = 1
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STATE_MACRO = 2
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def c_macro_to_format(macro):
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if macro.startswith("PRI"):
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return macro[3]
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raise Exception("Unhandled macro '%s'" % macro)
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def c_fmt_to_stap(fmt):
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state = 0
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bits = []
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literal = ""
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macro = ""
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escape = 0;
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for i in range(len(fmt)):
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if fmt[i] == '\\':
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if escape:
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escape = 0
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else:
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escape = 1
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if state != STATE_LITERAL:
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raise Exception("Unexpected escape outside string literal")
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literal = literal + fmt[i]
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elif fmt[i] == '"' and not escape:
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if state == STATE_LITERAL:
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state = STATE_SKIP
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bits.append(literal)
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literal = ""
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else:
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if state == STATE_MACRO:
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bits.append(c_macro_to_format(macro))
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state = STATE_LITERAL
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elif fmt[i] == ' ' or fmt[i] == '\t':
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if state == STATE_MACRO:
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bits.append(c_macro_to_format(macro))
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macro = ""
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state = STATE_SKIP
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elif state == STATE_LITERAL:
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literal = literal + fmt[i]
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else:
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escape = 0
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if state == STATE_SKIP:
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state = STATE_MACRO
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if state == STATE_LITERAL:
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literal = literal + fmt[i]
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else:
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macro = macro + fmt[i]
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if state == STATE_MACRO:
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bits.append(c_macro_to_format(macro))
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elif state == STATE_LITERAL:
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bits.append(literal)
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fmt = re.sub("%(\d*)z(x|u|d)", "%\\1\\2", "".join(bits))
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return fmt
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def generate(events, backend, group):
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out('/* This file is autogenerated by tracetool, do not edit. */',
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'')
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for event_id, e in enumerate(events):
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if 'disable' in e.properties:
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continue
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out('probe %(probeprefix)s.log.%(name)s = %(probeprefix)s.%(name)s ?',
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'{',
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probeprefix=probeprefix(),
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name=e.name)
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# Get references to userspace strings
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for type_, name in e.args:
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name = stap_escape(name)
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if is_string(type_):
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out(' try {',
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' arg%(name)s_str = %(name)s ? ' +
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'user_string_n(%(name)s, 512) : "<null>"',
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' } catch {}',
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name=name)
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# Determine systemtap's view of variable names
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fields = ["pid()", "gettimeofday_ns()"]
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for type_, name in e.args:
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name = stap_escape(name)
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if is_string(type_):
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fields.append("arg" + name + "_str")
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else:
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fields.append(name)
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# Emit the entire record in a single SystemTap printf()
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arg_str = ', '.join(arg for arg in fields)
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fmt_str = "%d@%d " + e.name + " " + c_fmt_to_stap(e.fmt) + "\\n"
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out(' printf("%(fmt_str)s", %(arg_str)s)',
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fmt_str=fmt_str, arg_str=arg_str)
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out('}')
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out()
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