/*
* support.h: HVM support routines used by VT-x and SVM.
*
* Leendert van Doorn, leendert@watson.ibm.com
* Copyright (c) 2005, International Business Machines Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
* Place - Suite 330, Boston, MA 02111-1307 USA.
*/
#ifndef __ASM_X86_HVM_SUPPORT_H__
#define __ASM_X86_HVM_SUPPORT_H__
#include <xen/sched.h>
#include <asm/types.h>
#include <asm/regs.h>
#include <asm/processor.h>
#ifndef NDEBUG
#define HVM_DEBUG 1
#else
#define HVM_DEBUG 0
#endif
#define hvm_guest(v) ((v)->arch.guest_context.flags & VGCF_HVM_GUEST)
static inline shared_iopage_t *get_sp(struct domain *d)
{
return (shared_iopage_t *) d->arch.hvm_domain.shared_page_va;
}
static inline vcpu_iodata_t *get_vio(struct domain *d, unsigned long cpu)
{
return &get_sp(d)->vcpu_iodata[cpu];
}
static inline int iopacket_port(struct vcpu *v)
{
return get_vio(v->domain, v->vcpu_id)->vp_eport;
}
/* XXX these are really VMX specific */
#define TYPE_MOV_TO_DR (0 << 4)
#define TYPE_MOV_FROM_DR (1 << 4)
#define TYPE_MOV_TO_CR (0 << 4)
#define TYPE_MOV_FROM_CR (1 << 4)
#define TYPE_CLTS (2 << 4)
#define TYPE_LMSW (3 << 4)
enum hval_bitmaps {
EXCEPTION_BITMAP_TABLE=0,
};
#define EXCEPTION_BITMAP_DE (1 << 0) /* Divide Error */
#define EXCEPTION_BITMAP_DB (1 << 1) /* Debug */
#define EXCEPTION_BITMAP_NMI (1 << 2) /* NMI */
#define EXCEPTION_BITMAP_BP (1 << 3) /* Breakpoint */
#define EXCEPTION_BITMAP_OF (1 << 4) /* Overflow */
#define EXCEPTION_BITMAP_BR (1 << 5) /* BOUND Range Exceeded */
#define EXCEPTION_BITMAP_UD (1 << 6) /* Invalid Opcode */
#define EXCEPTION_BITMAP_NM (1 << 7) /* Device Not Available */
#define EXCEPTION_BITMAP_DF (1 << 8) /* Double Fault */
/* reserved */
#define EXCEPTION_BITMAP_TS (1 << 10) /* Invalid TSS */
#define EXCEPTION_BITMAP_NP (1 << 11) /* Segment Not Present */
#define EXCEPTION_BITMAP_SS (1 << 12) /* Stack-Segment Fault */
#define EXCEPTION_BITMAP_GP (1 << 13) /* General Protection */
#define EXCEPTION_BITMAP_PG (1 << 14) /* Page Fault */
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.highlight .il { color: #0000DD; font-weight: bold } /* Literal.Number.Integer.Long */# -*- coding: utf-8 -*-
import pytest
import re
import env # noqa: F401
from pybind11_tests import factory_constructors as m
from pybind11_tests.factory_constructors import tag
from pybind11_tests import ConstructorStats
def test_init_factory_basic():
"""Tests py::init_factory() wrapper around various ways of returning the object"""
cstats = [
ConstructorStats.get(c)
for c in [m.TestFactory1, m.TestFactory2, m.TestFactory3]
]
cstats[0].alive() # force gc
n_inst = ConstructorStats.detail_reg_inst()
x1 = m.TestFactory1(tag.unique_ptr, 3)
assert x1.value == "3"
y1 = m.TestFactory1(tag.pointer)
assert y1.value == "(empty)"
z1 = m.TestFactory1("hi!")
assert z1.value == "hi!"
assert ConstructorStats.detail_reg_inst() == n_inst + 3
x2 = m.TestFactory2(tag.move)
assert x2.value == "(empty2)"
y2 = m.TestFactory2(tag.pointer, 7)
assert y2.value == "7"
z2 = m.TestFactory2(tag.unique_ptr, "hi again")
assert z2.value == "hi again"
assert ConstructorStats.detail_reg_inst() == n_inst + 6
x3 = m.TestFactory3(tag.shared_ptr)
assert x3.value == "(empty3)"
y3 = m.TestFactory3(tag.pointer, 42)
assert y3.value == "42"
z3 = m.TestFactory3("bye")
assert z3.value == "bye"
for null_ptr_kind in [tag.null_ptr, tag.null_unique_ptr, tag.null_shared_ptr]:
with pytest.raises(TypeError) as excinfo:
m.TestFactory3(null_ptr_kind)
assert (
str(excinfo.value) == "pybind11::init(): factory function returned nullptr"
)
assert [i.alive() for i in cstats] == [3, 3, 3]
assert ConstructorStats.detail_reg_inst() == n_inst + 9
del x1, y2, y3, z3
assert [i.alive() for i in cstats] == [2, 2, 1]
assert ConstructorStats.detail_reg_inst() == n_inst + 5
del x2, x3, y1, z1, z2
assert [i.alive() for i in cstats] == [0, 0, 0]
assert ConstructorStats.detail_reg_inst() == n_inst
assert [i.values() for i in cstats] == [
["3", "hi!"],
["7", "hi again"],
["42", "bye"],
]
assert [i.default_constructions for i in cstats] == [1, 1, 1]
def test_init_factory_signature(msg):
with pytest.raises(TypeError) as excinfo:
m.TestFactory1("invalid", "constructor", "arguments")
assert (
msg(excinfo.value)
== """
__init__(): incompatible constructor arguments. The following argument types are supported:
1. m.factory_constructors.TestFactory1(arg0: m.factory_constructors.tag.unique_ptr_tag, arg1: int)
2. m.factory_constructors.TestFactory1(arg0: str)
3. m.factory_constructors.TestFactory1(arg0: m.factory_constructors.tag.pointer_tag)
4. m.factory_constructors.TestFactory1(arg0: handle, arg1: int, arg2: handle)
Invoked with: 'invalid', 'constructor', 'arguments'
""" # noqa: E501 line too long
)
assert (
msg(m.TestFactory1.__init__.__doc__)
== """
__init__(*args, **kwargs)
Overloaded function.
1. __init__(self: m.factory_constructors.TestFactory1, arg0: m.factory_constructors.tag.unique_ptr_tag, arg1: int) -> None
2. __init__(self: m.factory_constructors.TestFactory1, arg0: str) -> None
3. __init__(self: m.factory_constructors.TestFactory1, arg0: m.factory_constructors.tag.pointer_tag) -> None
4. __init__(self: m.factory_constructors.TestFactory1, arg0: handle, arg1: int, arg2: handle) -> None
""" # noqa: E501 line too long
)
def test_init_factory_casting():
"""Tests py::init_factory() wrapper with various upcasting and downcasting returns"""
cstats = [
ConstructorStats.get(c)
for c in [m.TestFactory3, m.TestFactory4, m.TestFactory5]
]
cstats[0].alive() # force gc
n_inst = ConstructorStats.detail_reg_inst()
# Construction from derived references:
a = m.TestFactory3(tag.pointer, tag.TF4, 4)
assert a.value == "4"
b = m.TestFactory3(tag.shared_ptr, tag.TF4, 5)
assert b.value == "5"
c = m.TestFactory3(tag.pointer, tag.TF5, 6)
assert c.value == "6"
d = m.TestFactory3(tag.shared_ptr, tag.TF5, 7)
assert d.value == "7"
assert ConstructorStats.detail_reg_inst() == n_inst + 4
# Shared a lambda with TF3:
e = m.TestFactory4(tag.pointer, tag.TF4, 8)
assert e.value == "8"
assert ConstructorStats.detail_reg_inst() == n_inst + 5
assert [i.alive() for i in cstats] == [5, 3, 2]
del a
assert [i.alive() for i in cstats] == [4, 2, 2]
assert ConstructorStats.detail_reg_inst() == n_inst + 4
del b, c, e
assert [i.alive() for i in cstats] == [1, 0, 1]
assert ConstructorStats.detail_reg_inst() == n_inst + 1
del d
assert [i.alive() for i in cstats] == [0, 0, 0]
assert ConstructorStats.detail_reg_inst() == n_inst
assert [i.values() for i in cstats] == [
["4", "5", "6", "7", "8"],
["4", "5", "8"],
["6", "7"],
]
def test_init_factory_alias():
"""Tests py::init_factory() wrapper with value conversions and alias types"""
cstats = [m.TestFactory6.get_cstats(), m.TestFactory6.get_alias_cstats()]
cstats[0].alive() # force gc
n_inst = ConstructorStats.detail_reg_inst()
a = m.TestFactory6(tag.base, 1)
assert a.get() == 1
assert not a.has_alias()
b = m.TestFactory6(tag.alias, "hi there")
assert b.get() == 8
assert b.has_alias()
c = m.TestFactory6(tag.alias, 3)
assert c.get() == 3
assert c.has_alias()
d = m.TestFactory6(tag.alias, tag.pointer, 4)
assert d.get() == 4
assert d.has_alias()
e = m.TestFactory6(tag.base, tag.pointer, 5)
assert e.get() == 5
assert not e.has_alias()
f = m.TestFactory6(tag.base, tag.alias, tag.pointer, 6)
assert f.get() == 6
assert f.has_alias()
assert ConstructorStats.detail_reg_inst() == n_inst + 6
assert [i.alive() for i in cstats] == [6, 4]
del a, b, e
assert [i.alive() for i in cstats] == [3, 3]
assert ConstructorStats.detail_reg_inst() == n_inst + 3
del f, c, d
assert [i.alive() for i in cstats] == [0, 0]
assert ConstructorStats.detail_reg_inst() == n_inst
class MyTest(m.TestFactory6):
def __init__(self, *args):
m.TestFactory6.__init__(self, *args)
def get(self):
return -5 + m.TestFactory6.get(self)
# Return Class by value, moved into new alias:
z = MyTest(tag.base, 123)
assert z.get() == 118
assert z.has_alias()
# Return alias by value, moved into new alias:
y = MyTest(tag.alias, "why hello!")
assert y.get() == 5
assert y.has_alias()
# Return Class by pointer, moved into new alias then original destroyed:
x = MyTest(tag.base, tag.pointer, 47)
assert x.get() == 42
assert x.has_alias()
assert ConstructorStats.detail_reg_inst() == n_inst + 3
assert [i.alive() for i in cstats] == [3, 3]
del x, y, z
assert [i.alive() for i in cstats] == [0, 0]
assert ConstructorStats.detail_reg_inst() == n_inst
assert [i.values() for i in cstats] == [
["1", "8", "3", "4", "5", "6", "123", "10", "47"],
["hi there", "3", "4", "6", "move", "123", "why hello!", "move", "47"],
]
def test_init_factory_dual():
"""Tests init factory functions with dual main/alias factory functions"""
from pybind11_tests.factory_constructors import TestFactory7
cstats = [TestFactory7.get_cstats(), TestFactory7.get_alias_cstats()]
cstats[0].alive() # force gc
n_inst = ConstructorStats.detail_reg_inst()
class PythFactory7(TestFactory7):
def get(self):
return 100 + TestFactory7.get(self)
a1 = TestFactory7(1)
a2 = PythFactory7(2)
assert a1.get() == 1
assert a2.get() == 102
assert not a1.has_alias()
assert a2.has_alias()
b1 = TestFactory7(tag.pointer, 3)
b2 = PythFactory7(tag.pointer, 4)
assert b1.get() == 3
assert b2.get() == 104
assert not b1.has_alias()
assert b2.has_alias()
c1 = TestFactory7(tag.mixed, 5)
c2 = PythFactory7(tag.mixed, 6)
assert c1.get() == 5
assert c2.get() == 106
assert not c1.has_alias()
assert c2.has_alias()
d1 = TestFactory7(tag.base, tag.pointer, 7)
d2 = PythFactory7(tag.base, tag.pointer, 8)
assert d1.get() == 7
assert d2.get() == 108
assert not d1.has_alias()
assert d2.has_alias()
# Both return an alias; the second multiplies the value by 10:
e1 = TestFactory7(tag.alias, tag.pointer, 9)
e2 = PythFactory7(tag.alias, tag.pointer, 10)
assert e1.get() == 9
assert e2.get() == 200
assert e1.has_alias()
assert e2.has_alias()
f1 = TestFactory7(tag.shared_ptr, tag.base, 11)
f2 = PythFactory7(tag.shared_ptr, tag.base, 12)
assert f1.get() == 11
assert f2.get() == 112
assert not f1.has_alias()
assert f2.has_alias()
g1 = TestFactory7(tag.shared_ptr, tag.invalid_base, 13)
assert g1.get() == 13
assert not g1.has_alias()
with pytest.raises(TypeError) as excinfo:
PythFactory7(tag.shared_ptr, tag.invalid_base, 14)
assert (
str(excinfo.value)
== "pybind11::init(): construction failed: returned holder-wrapped instance is not an "
"alias instance"
)
assert [i.alive() for i in cstats] == [13, 7]
assert ConstructorStats.detail_reg_inst() == n_inst + 13
del a1, a2, b1, d1, e1, e2
assert [i.alive() for i in cstats] == [7, 4]
assert ConstructorStats.detail_reg_inst() == n_inst + 7
del b2, c1, c2, d2, f1, f2, g1
assert [i.alive() for i in cstats] == [0, 0]
assert ConstructorStats.detail_reg_inst() == n_inst
assert [i.values() for i in cstats] == [
["1", "2", "3", "4", "5", "6", "7", "8", "9", "100", "11", "12", "13", "14"],
["2", "4", "6", "8", "9", "100", "12"],
]
def test_no_placement_new(capture):
"""Prior to 2.2, `py::init<...>` relied on the type supporting placement
new; this tests a class without placement new support."""
with capture:
a = m.NoPlacementNew(123)
found = re.search(r"^operator new called, returning (\d+)\n$", str(capture))
assert found
assert a.i == 123
with capture:
del a
pytest.gc_collect()
assert capture == "operator delete called on " + found.group(1)
with capture:
b = m.NoPlacementNew()
found = re.search(r"^operator new called, returning (\d+)\n$", str(capture))
assert found
assert b.i == 100
with capture:
del b
pytest.gc_collect()
assert capture == "operator delete called on " + found.group(1)
def test_multiple_inheritance():
class MITest(m.TestFactory1, m.TestFactory2):
def __init__(self):
m.TestFactory1.__init__(self, tag.unique_ptr, 33)
m.TestFactory2.__init__(self, tag.move)
a = MITest()
assert m.TestFactory1.value.fget(a) == "33"
assert m.TestFactory2.value.fget(a) == "(empty2)"
def create_and_destroy(*args):
a = m.NoisyAlloc(*args)
print("---")
del a
pytest.gc_collect()
def strip_comments(s):
return re.sub(r"\s+#.*", "", s)
def test_reallocation_a(capture, msg):
"""When the constructor is overloaded, previous overloads can require a preallocated value.
This test makes sure that such preallocated values only happen when they might be necessary,
and that they are deallocated properly."""
pytest.gc_collect()
with capture:
create_and_destroy(1)
assert (
msg(capture)
== """
noisy new
noisy placement new
NoisyAlloc(int 1)
---
~NoisyAlloc()
noisy delete
"""
)
def test_reallocation_b(capture, msg):
with capture:
create_and_destroy(1.5)
assert msg(capture) == strip_comments(
"""
noisy new # allocation required to attempt first overload
noisy delete # have to dealloc before considering factory init overload
noisy new # pointer factory calling "new", part 1: allocation
NoisyAlloc(double 1.5) # ... part two, invoking constructor
---
~NoisyAlloc() # Destructor
noisy delete # operator delete
"""
)
def test_reallocation_c(capture, msg):
with capture:
create_and_destroy(2, 3)
assert msg(capture) == strip_comments(
"""
noisy new # pointer factory calling "new", allocation
NoisyAlloc(int 2) # constructor
---
~NoisyAlloc() # Destructor
noisy delete # operator delete
"""
)
def test_reallocation_d(capture, msg):
with capture:
create_and_destroy(2.5, 3)
assert msg(capture) == strip_comments(
"""
NoisyAlloc(double 2.5) # construction (local func variable: operator_new not called)
noisy new # return-by-value "new" part 1: allocation
~NoisyAlloc() # moved-away local func variable destruction
---
~NoisyAlloc() # Destructor
noisy delete # operator delete
"""
)
def test_reallocation_e(capture, msg):
with capture:
create_and_destroy(3.5, 4.5)
assert msg(capture) == strip_comments(
"""
noisy new # preallocation needed before invoking placement-new overload
noisy placement new # Placement new
NoisyAlloc(double 3.5) # construction
---
~NoisyAlloc() # Destructor
noisy delete # operator delete
"""
)
def test_reallocation_f(capture, msg):
with capture:
create_and_destroy(4, 0.5)
assert msg(capture) == strip_comments(
"""
noisy new # preallocation needed before invoking placement-new overload
noisy delete # deallocation of preallocated storage
noisy new # Factory pointer allocation
NoisyAlloc(int 4) # factory pointer construction
---
~NoisyAlloc() # Destructor
noisy delete # operator delete
"""
)
def test_reallocation_g(capture, msg):
with capture:
create_and_destroy(5, "hi")
assert msg(capture) == strip_comments(
"""
noisy new # preallocation needed before invoking first placement new
noisy delete # delete before considering new-style constructor
noisy new # preallocation for second placement new
noisy placement new # Placement new in the second placement new overload
NoisyAlloc(int 5) # construction
---
~NoisyAlloc() # Destructor
noisy delete # operator delete
"""
)
@pytest.mark.skipif("env.PY2")
def test_invalid_self():
"""Tests invocation of the pybind-registered base class with an invalid `self` argument. You
can only actually do this on Python 3: Python 2 raises an exception itself if you try."""
class NotPybindDerived(object):
pass
# Attempts to initialize with an invalid type passed as `self`:
class BrokenTF1(m.TestFactory1):
def __init__(self, bad):
if bad == 1:
a = m.TestFactory2(tag.pointer, 1)
m.TestFactory1.__init__(a, tag.pointer)
elif bad == 2:
a = NotPybindDerived()
m.TestFactory1.__init__(a, tag.pointer)
# Same as above, but for a class with an alias:
class BrokenTF6(m.TestFactory6):
def __init__(self, bad):
if bad == 1:
a = m.TestFactory2(tag.pointer, 1)
m.TestFactory6.__init__(a, tag.base, 1)
elif bad == 2:
a = m.TestFactory2(tag.pointer, 1)
m.TestFactory6.__init__(a, tag.alias, 1)
elif bad == 3:
m.TestFactory6.__init__(
NotPybindDerived.__new__(NotPybindDerived), tag.base, 1
)
elif bad == 4:
m.TestFactory6.__init__(
NotPybindDerived.__new__(NotPybindDerived), tag.alias, 1
)
for arg in (1, 2):
with pytest.raises(TypeError) as excinfo:
BrokenTF1(arg)
assert (
str(excinfo.value)
== "__init__(self, ...) called with invalid `self` argument"
)
for arg in (1, 2, 3, 4):
with pytest.raises(TypeError) as excinfo:
BrokenTF6(arg)
assert (
str(excinfo.value)
== "__init__(self, ...) called with invalid `self` argument"
)
