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Copy pathmarks.py
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203 lines (182 loc) · 6.44 KB
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from __future__ import print_function
from jitlog import constants as const
from jitlog import merge_point
from jitlog.objects import FlatOp, MergePoint
from vmprof.binary import (read_word, read_string,
read_le_u16, read_le_u64,
read_le_s64, read_bytes, read_byte,
read_char)
import base64
import sys
import re
VERSIONS = {}
def get_reader(version, mark):
return VERSIONS[version][mark]
def version(*versions):
def func(parser):
for ver in versions:
if ver not in VERSIONS:
VERSIONS[ver] = {}
parsers = VERSIONS[ver]
#
name = parser.__name__
assert name.startswith("read_")
name = "MARK_" + name[5:].upper()
mark = getattr(const, name, -1)
assert mark not in parsers, "%s for version %d has already been defined" % (parser.__name__, ver)
parsers[mark] = parser
return parser
return func
@version(1)
def read_resop_meta(forest, trace, fileobj):
assert len(forest.resops) == 0
count = read_le_u16(fileobj)
for i in range(count):
opnum = read_le_u16(fileobj)
opname = read_string(fileobj, True)
forest.resops[opnum] = opname
@version(1)
def read_start_trace(forest, trace, fileobj):
trace_id = forest.read_le_addr(fileobj)
trace_type = read_string(fileobj, True)
trace_nmr = forest.read_le_addr(fileobj)
#
assert trace_id not in forest.traces
forest.add_trace(trace_type, trace_id, trace_nmr)
@version(1)
def read_trace(forest, trace, fileobj):
assert trace is not None
trace_id = forest.read_le_addr(fileobj)
assert trace_id == trace.unique_id
trace.start_mark(const.MARK_TRACE)
@version(1)
def read_trace_opt(forest, trace, fileobj):
assert trace is not None
trace_id = forest.read_le_addr(fileobj)
assert trace_id == trace.unique_id
trace.start_mark(const.MARK_TRACE_OPT)
@version(1)
def read_trace_asm(forest, trace, fileobj):
assert trace is not None
trace_id = forest.read_le_addr(fileobj)
assert trace_id == trace.unique_id
trace.start_mark(const.MARK_TRACE_ASM)
@version(1)
def read_input_args(forest, trace, fileobj):
assert trace is not None
argnames = read_string(fileobj, True).split(',')
trace.set_inputargs(argnames)
@version(1)
def read_resop(forest, trace, fileobj):
assert trace is not None
opnum = read_le_u16(fileobj)
args = read_string(fileobj, True).split(',')
result = args[0]
args = args[1:]
assert opnum in forest.resops, "opnum is not known: " + str(opnum) + \
" at binary pos " + str(hex(fileobj.tell()))
opname = forest.resops[opnum]
op = FlatOp(opnum, opname, args, result, None, -1)
trace.add_instr(op)
TOKEN_REGEX = re.compile("TargetToken\((\d+)\)")
@version(1)
def read_resop_descr(forest, trace, fileobj):
assert trace is not None
opnum = read_le_u16(fileobj)
args = read_string(fileobj, True).split(',')
descr_number = forest.read_le_addr(fileobj)
descr = args[-1]
result = args[0]
args = args[1:-1]
assert opnum in forest.resops, "opnum is not known: " + str(opnum) + \
" at binary pos " + str(hex(fileobj.tell()))
opname = forest.resops[opnum]
op = FlatOp(opnum, opname, args, result, descr, descr_number)
trace.add_instr(op)
@version(1)
def read_asm_addr(forest, trace, fileobj):
assert trace is not None
addr1 = forest.read_le_addr(fileobj)
addr2 = forest.read_le_addr(fileobj)
trace.set_addr_bounds(addr1, addr2)
@version(1)
def read_asm(forest, trace, fileobj):
assert trace is not None
rel_pos = read_le_u16(fileobj)
dump = read_bytes(fileobj)
trace.set_core_dump_to_last_op(rel_pos, dump)
@version(1)
def read_init_merge_point(forest, trace, fileobj):
count = read_le_u16(fileobj)
types = []
for i in range(count):
sem_type = read_byte(fileobj)
gen_type = read_char(fileobj)
d = merge_point.get_decoder(sem_type, gen_type, forest.version)
types.append(d)
stage = trace.get_last_stage()
assert stage is not None
stage.merge_point_types = types
@version(1)
def read_common_prefix(forest, trace, fileobj):
index = ord(fileobj.read(1))
prefix = read_string(fileobj, True)
stage = trace.get_last_stage()
stage.merge_point_types[index].set_prefix(prefix)
@version(1)
def read_merge_point(forest, trace, fileobj):
assert trace is not None
stage = trace.get_last_stage()
assert stage is not None
#
values = { decoder.sem_type : decoder.decode(fileobj)
for decoder in stage.merge_point_types }
trace.add_instr(MergePoint(values))
@version(1)
def read_stitch_bridge(forest, trace, fileobj):
descr_number = forest.read_le_addr(fileobj)
addr_tgt = forest.read_le_addr(fileobj)
forest.stitch_bridge(descr_number, addr_tgt)
@version(1)
def read_jitlog_counter(forest, trace, fileobj):
addr = forest.read_le_addr(fileobj)
type = read_char(fileobj)
count = read_le_u64(fileobj)
# entry: gets the globally numbered addr of the loop
# bridge: gets the addr of the fail descr
# label: gets the addr of the loop token
trace = forest.get_trace_by_id(addr)
if trace:
trace.add_up_enter_count(count)
return True
else:
if type == 'e':
# it can happen that jitlog counters are present,
# even though there is no trace to be found.
# vm starts up (bootstrapping creates 1-2 trace),
# jitlog is enabled afterwards
return False
assert type == 'b' or type == 'l'
point_in_trace = forest.get_point_in_trace_by_descr(addr)
if point_in_trace:
if type == 'b':
point_in_trace.trace.add_up_enter_count(count)
else:
point_in_trace.add_up_enter_count(count)
return True
sys.stderr.write("trace with 0x%x (type '%c' was executed %d times" \
" but was not recorded in the log\n" % (addr, type, count))
return False
@version(1)
def read_abort_trace(forest, trace, fileobj):
trace_id = forest.read_le_addr(fileobj)
# TODO?
@version(1)
def read_source_code(forest, trace, fileobj):
filename = read_string(fileobj, True)
count = read_le_u16(fileobj)
for i in range(count):
lineno = read_le_u16(fileobj)
indent = read_byte(fileobj)
text = read_string(fileobj, True)
forest.add_source_code_line(filename, lineno, indent, text)