f98ee40f4b
This is an ongoing series of commits that are reformatting our Python code. This catches the last of the python files to reformat. Since they where so few I bunched them together. Reformatting is done with `black`. If you end up having problems merging this commit because you have made changes to a python file, the best way to handle that is to run git checkout --ours <yourfile> and then reformat it with black. If you run into any problems, post to discourse about it and we will try to help. RFC Thread below: https://discourse.llvm.org/t/rfc-document-and-standardize-python-code-style Reviewed By: jhenderson, #libc, Mordante, sivachandra Differential Revision: https://reviews.llvm.org/D150784
113 lines
2.6 KiB
Python
113 lines
2.6 KiB
Python
import gdb
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import os
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import re
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import traceback
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import sys
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""" This module evaluates function parameters of those OMPD callbacks that need GDB API calls.
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"""
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""" Have the debugger print a string.
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"""
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def _print(*args):
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# args is a tuple with just one string element
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print_string = args[0]
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gdb.execute('printf "%s\n"' % args[0])
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""" Look up the address of a global symbol in the target.
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"""
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def _sym_addr(*args):
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# args is a tuple consisting of thread_id and symbol_name
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thread_id = args[0]
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symbol_name = args[1]
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if thread_id >= 0:
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gdb.execute("thread %d\n" % thread_id, to_string=True)
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return int(gdb.parse_and_eval("&" + symbol_name))
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""" Read string from the target and copy it into the provided buffer.
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"""
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def _read_string(*args):
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# args is a tuple with just the source address
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addr = args[0]
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try:
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buf = gdb.parse_and_eval("(unsigned char*)%li" % addr).string()
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except:
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traceback.print_exc()
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return buf
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""" Read memory from the target and copy it into the provided buffer.
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"""
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def _read(*args):
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# args is a tuple consisting of address and number of bytes to be read
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addr = args[0]
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nbytes = args[1]
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# print("_read(%i,%i)"%(addr, nbytes))
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ret_buf = bytearray()
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# try:
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buf = gdb.parse_and_eval("(unsigned char*)%li" % addr)
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for i in range(nbytes):
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ret_buf.append(int(buf[i]))
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# except:
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# traceback.print_exc()
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return ret_buf
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""" Get thread-specific context.
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Return -1 if no match is found.
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"""
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def _thread_context(*args):
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# args is a tuple consisting of thread_id and the thread kind
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thread_id = args[1]
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pthread = False
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lwp = False
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if args[0] == 0:
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pthread = True
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else:
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lwp = True
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info = gdb.execute("info threads", to_string=True).splitlines()
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for line in info:
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if pthread:
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m = re.search(r"(0x[a-fA-F0-9]+)", line)
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elif lwp:
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m = re.search(r"\([^)]*?(\d+)[^)]*?\)", line)
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if m == None:
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continue
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pid = int(m.group(1), 0)
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if pid == thread_id:
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return int(line[2:6], 0)
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return -1
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""" Test info threads / list threads / how to split output to get thread id
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and its size.
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"""
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def _test_threads(*args):
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info = gdb.execute("info threads", to_string=True).splitlines()
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for line in info[1:]:
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content = line.split()
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thread_id = None
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# fetch pointer to id
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if content[0].startswith("*"):
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thread_id = content[3]
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else:
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thread_id = content[2]
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sizeof_tid = sys.getsizeof(thread_id)
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print(sizeof_tid)
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print(info)
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