1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181
|
"""
LLDB Formatters for LLVM data types for use in the swift project.
Load into LLDB with 'command script import /path/to/lldbSwiftDataFormatters.py'
"""
import sys
from enum import Enum
def __lldb_init_module(debugger, internal_dict):
category = 'swift-compiler-internals'
debugger.HandleCommand(f'type category define -e {category} -l c++')
tName = 'lldbSwiftDataFormatters.SmallBitVectorSummaryProvider'
debugger.HandleCommand('type summary add -w llvm '
f'-F {tName} -x "^llvm::SmallBitVector$"')
debugger.HandleCommand(f'type summary add --expand --skip-references -w {category} '
'-F lldbSwiftDataFormatters.DemangleNodeSummaryProvider '
'-x "^swift::Demangle::Node$"')
debugger.HandleCommand(f'type synthetic add --skip-references -w {category} '
'-l lldbSwiftDataFormatters.DemangleNodeSynthProvider '
'-x "^swift::Demangle::Node$"')
debugger.HandleCommand(f'type summary add -w {category} '
'-s "${var.Pointer%S}" '
'swift::Identifier')
def SmallBitVectorSummaryProvider(valobj, internal_dict):
underlyingValue = valobj.GetChildMemberWithName('X').GetValueAsUnsigned()
numBaseBits = 32
is64Bit = sys.maxsize > 2**32
if is64Bit:
numBaseBits = 64
smallNumRawBits = numBaseBits - 1
smallNumSizeBits = None
if numBaseBits == 32:
smallNumSizeBits = 5
elif numBaseBits == 64:
smallNumSizeBits = 6
else:
smallNumSizeBits = smallNumRawBits
smallNumDataBits = smallNumRawBits - smallNumSizeBits
# If our underlying value is not small, print we can not dump large values.
isSmallMask = 1
if (underlyingValue & isSmallMask) == 0:
return '<can not read large SmallBitVector>'
smallRawBits = underlyingValue >> 1
smallSize = smallRawBits >> smallNumDataBits
bits = smallRawBits & ((1 << (smallSize + 1)) - 1)
res = "["
for i in reversed(range(0, smallSize)):
if bool(bits & (1 << i)):
res += '1'
else:
res += '0'
res += "]"
return res
class DemangleNodePayloadKind(Enum):
NONE = 0
TEXT = 1
INDEX = 2
ONE_CHILD = 3
TWO_CHILDREN = 4
MANY_CHILDREN = 5
class DemangleNodeSynthProvider:
""" Provider for swift::Demangle::Node """
def __init__(self, valobj, internal_dict):
self.valobj = valobj
self.update() # initialize this provider
def num_children(self):
if self.payload_kind in [DemangleNodePayloadKind.TEXT,
DemangleNodePayloadKind.INDEX,
DemangleNodePayloadKind.ONE_CHILD]:
return 2
if self.payload_kind is DemangleNodePayloadKind.TWO_CHILDREN:
return 3
if self.payload_kind is DemangleNodePayloadKind.MANY_CHILDREN:
return self.payload.GetChildMemberWithName('Children'). \
GetChildMemberWithName('Number').GetValueAsUnsigned() + 1
return 1
def get_child_index(self, name):
if name == 'NodeKind':
return 0
if self.payload_kind is DemangleNodePayloadKind.TEXT and name == 'Text':
return 1
if self.payload_kind is DemangleNodePayloadKind.INDEX and name == 'Index':
return 1
if self.payload_kind is DemangleNodePayloadKind.NONE:
return None
try:
return int(name.lstrip('[').rstrip(']')) + 1
except ValueError:
return None
def get_child_at_index(self, index):
if index == 0:
return self.valobj.GetChildMemberWithName('NodeKind')
index -= 1
if self.payload_kind is DemangleNodePayloadKind.TEXT and index == 0:
return self.payload.GetChildMemberWithName('Text')
if self.payload_kind is DemangleNodePayloadKind.INDEX and index == 0:
return self.payload.GetChildMemberWithName('Index')
if self.payload_kind is DemangleNodePayloadKind.ONE_CHILD \
and index == 0:
return self.payload \
.GetChildMemberWithName('InlineChildren') \
.GetChildAtIndex(0)
if self.payload_kind is DemangleNodePayloadKind.TWO_CHILDREN \
and 0 <= index <= 1:
return self.payload \
.GetChildMemberWithName('InlineChildren') \
.GetChildAtIndex(index)
if self.payload_kind is DemangleNodePayloadKind.MANY_CHILDREN \
and index >= 0:
node_vector = self.payload.GetChildMemberWithName('Children')
length = node_vector.GetChildMemberWithName('Number')
if index >= length.GetValueAsUnsigned():
return None
nodes_ptr = node_vector.GetChildMemberWithName('Nodes')
offset = self.node_ptr_size * index
return nodes_ptr.CreateChildAtOffset('[' + str(index) + ']',
offset, self.node_ptr_type)
return None
def update(self):
self.payload_kind = DemangleNodePayloadKind(
self.valobj.GetChildMemberWithName('NodePayloadKind').GetValueAsUnsigned()
)
valobj_type = self.valobj.GetType()
if valobj_type.IsPointerType():
self.node_ptr_type = valobj_type
else:
self.node_ptr_type = valobj_type.GetPointerType()
self.node_ptr_size = self.node_ptr_type.GetByteSize()
self.payload = self.valobj.GetChildAtIndex(0)
def DemangleNodeSummaryProvider(valobj, internal_dict):
valobj = valobj.GetNonSyntheticValue()
result = valobj.GetChildMemberWithName('NodeKind').GetValue()
result += ', '
payload_kind = DemangleNodePayloadKind(
valobj.GetChildMemberWithName('NodePayloadKind').GetValueAsUnsigned()
)
if payload_kind is DemangleNodePayloadKind.NONE:
result += '0 children'
if payload_kind is DemangleNodePayloadKind.TEXT:
result += 'Text='
result += valobj \
.GetChildAtIndex(0) \
.GetChildMemberWithName('Text') \
.GetSummary()
if payload_kind is DemangleNodePayloadKind.INDEX:
result += 'Index='
index = valobj \
.GetChildAtIndex(0) \
.GetChildMemberWithName('Index') \
.GetValueAsUnsigned()
result += str(index)
if payload_kind is DemangleNodePayloadKind.ONE_CHILD:
result += '1 child'
if payload_kind in [DemangleNodePayloadKind.TWO_CHILDREN,
DemangleNodePayloadKind.MANY_CHILDREN]:
num_children = \
DemangleNodeSynthProvider(valobj, internal_dict).num_children() - 1
result += str(num_children)
result += ' children'
return result
|