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v0.5.1
v0.5.1
https://github.com/python/cpython
Revision 25bfb1aa75c8358becdab11142954c8ee9c3607f authored by Miss Islington (bot) on 09 October 2018, 15:20:38 UTC, committed by GitHub on 09 October 2018, 15:20:38 UTC
When Python is built with the intel control-flow protection flags, -mcet -fcf-protection, gdb is not able to read the stack without actually jumping inside the function. This means an extra 'next' command is required to make the $pc (program counter) enter the function and make the stack of the function exposed to gdb. Co-Authored-By: Marcel Plch <gmarcel.plch@gmail.com> (cherry picked from commit 9b7c74ca32d1bec7128d550a9ab1b2ddc7046287) (cherry picked from commit 79d21331e605fdc941f947621846b8563485aab6) Co-authored-by: Victor Stinner <vstinner@redhat.com>
1 parent 64bcedc
Tip revision: 25bfb1aa75c8358becdab11142954c8ee9c3607f authored by Miss Islington (bot) on 09 October 2018, 15:20:38 UTC
bpo-32962: Fix test_gdb failure in debug build with -mcet -fcf-protection -O0 (GH-9656)
bpo-32962: Fix test_gdb failure in debug build with -mcet -fcf-protection -O0 (GH-9656)
Tip revision: 25bfb1a
makeopcodetargets.py
#! /usr/bin/env python
"""Generate C code for the jump table of the threaded code interpreter
(for compilers supporting computed gotos or "labels-as-values", such as gcc).
"""
import os
import sys
try:
from importlib.machinery import SourceFileLoader
except ImportError:
import imp
def find_module(modname):
"""Finds and returns a module in the local dist/checkout.
"""
modpath = os.path.join(
os.path.dirname(os.path.dirname(__file__)), "Lib")
return imp.load_module(modname, *imp.find_module(modname, [modpath]))
else:
def find_module(modname):
"""Finds and returns a module in the local dist/checkout.
"""
modpath = os.path.join(
os.path.dirname(os.path.dirname(__file__)), "Lib", modname + ".py")
return SourceFileLoader(modname, modpath).load_module()
def write_contents(f):
"""Write C code contents to the target file object.
"""
opcode = find_module('opcode')
targets = ['_unknown_opcode'] * 256
for opname, op in opcode.opmap.items():
targets[op] = "TARGET_%s" % opname
f.write("static void *opcode_targets[256] = {\n")
f.write(",\n".join([" &&%s" % s for s in targets]))
f.write("\n};\n")
def main():
if len(sys.argv) >= 3:
sys.exit("Too many arguments")
if len(sys.argv) == 2:
target = sys.argv[1]
else:
target = "Python/opcode_targets.h"
with open(target, "w") as f:
write_contents(f)
print("Jump table written into %s" % target)
if __name__ == "__main__":
main()
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