forked from qt-creator/qt-creator
Debugger: libc++ 16 dumper for string
Change-Id: Ic3eed66d7af54a0251ec58886b68dda611682bef Reviewed-by: Marcus Tillmanns <marcus.tillmanns@qt.io>
This commit is contained in:
hjk
@@ -5,6 +5,7 @@ from stdtypes import qdump__std__array, qdump__std__complex, qdump__std__once_fl
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from utils import DisplayFormat
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from dumper import Children, DumperBase
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import struct
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def qform__std____1__array():
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return [DisplayFormat.ArrayPlot]
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@@ -163,231 +164,114 @@ def qdump__std____1__stack(d, value):
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d.putBetterType(value.type)
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def GetChildMemberWithName(value, name):
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members = value.members(True)
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for member in members:
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if member.name == name:
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return member
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return None
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def GetIndexOfChildWithName(value, name):
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members = value.members(True)
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for i, member in enumerate(members):
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if member.name == name:
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return i
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return None
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class StringLayout:
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CSD = 0
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DSC = 1
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def std_1_string_dumper_v2(d, value):
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charType = value['__l']['__data_'].dereference().type
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R = GetChildMemberWithName(value, "__r_")
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if not R:
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raise Exception("Could not find __r_")
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# __r_ is a compressed_pair of the actual data and the allocator. The data we
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# want is in the first base class.
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R_Base_SP = R[0]
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if not R_Base_SP:
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raise Exception("Could not find R_Base_SP")
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Rep_Sp = GetChildMemberWithName(R_Base_SP, "__value_")
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if not Rep_Sp:
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raise Exception("Could not find __value_")
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# Our layout seems a little different
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Rep_Sp = Rep_Sp[0]
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if not Rep_Sp:
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raise Exception("Could not find Rep_Sp")
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L = GetChildMemberWithName(Rep_Sp, "__l")
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if not L:
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raise Exception("Could not find __l")
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layout = StringLayout.CSD
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if GetIndexOfChildWithName(L, "__data_") == 0:
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layout = StringLayout.DSC
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short_mode = False
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using_bitmasks = True
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size = 0
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size_mode_value = 0
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Short_Sp = GetChildMemberWithName(Rep_Sp, "__s")
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if not Short_Sp:
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raise Exception("Could not find __s")
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Is_Long = GetChildMemberWithName(Short_Sp, "__is_long_")
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Size_Sp = GetChildMemberWithName(Short_Sp, "__size_")
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if not Size_Sp:
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raise Exception("Could not find __size_")
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if Is_Long:
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using_bitmasks = False
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short_mode = Is_Long.integer() == 0
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size = Size_Sp.integer()
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else:
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size_mode_value = Size_Sp.integer()
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mode_mask = 1
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if layout == StringLayout.DSC:
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mode_mask = 0x80
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short_mode = (size_mode_value & mode_mask) == 0
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if short_mode:
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Location_Sp = GetChildMemberWithName(Short_Sp, "__data_")
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if using_bitmasks:
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size = ((size_mode_value >> 1) % 256)
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if layout == StringLayout.DSC:
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size = size_mode_value
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# The string is most likely not initialized yet
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if size > 100 or not Location_Sp:
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raise Exception("Probably not initialized yet")
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d.putCharArrayHelper(d.extractPointer(Location_Sp), size,
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charType, d.currentItemFormat())
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return
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Location_Sp = GetChildMemberWithName(L, "__data_")
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Size_Vo = GetChildMemberWithName(L, "__size_")
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Capacity_Vo = GetChildMemberWithName(L, "__cap_")
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if not Location_Sp or not Size_Vo or not Capacity_Vo:
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raise Exception("Could not find Location_Sp, Size_Vo or Capacity_Vo")
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size = Size_Vo.integer()
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capacity = Capacity_Vo.integer()
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if not using_bitmasks and layout == StringLayout.CSD:
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capacity *= 2
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if capacity < size:
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raise Exception("Capacity is less than size")
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d.putCharArrayHelper(d.extractPointer(Location_Sp), size,
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charType, d.currentItemFormat())
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def std_1_string_dumper_v1(d, value):
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charType = value['__l']['__data_'].dereference().type
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D = None
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if d.isLldb:
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D = value[0][0][0][0]
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elif d.isGdb:
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D = value["__r_"].members(True)[0][0][0]
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else:
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raise Exception("Unknown debugger (neither gdb nor lldb)")
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layoutDecider = D[0][0]
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if not layoutDecider:
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raise Exception("Could not find layoutDecider")
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size = 0
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size_mode_value = 0
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short_mode = False
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libcxx_version = 14
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layoutModeIsDSC = layoutDecider.name == '__data_'
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if (layoutModeIsDSC):
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size_mode = D[1][1][0]
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if not size_mode:
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raise Exception("Could not find size_mode")
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if not size_mode.name == '__size_':
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size_mode = D[1][1][1]
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if not size_mode:
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raise Exception("Could not find size_mode")
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size_mode_value = size_mode.integer()
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short_mode = ((size_mode_value & 0x80) == 0)
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else:
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size_mode = D[1][0][0]
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if not size_mode:
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raise Exception("Could not find size_mode")
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if size_mode.name == '__is_long_':
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libcxx_version = 15
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short_mode = (size_mode.integer() == 0)
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size_mode = D[1][0][1]
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size_mode_value = size_mode.integer()
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else:
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size_mode_value = size_mode.integer()
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short_mode = ((size_mode_value & 1) == 0)
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if short_mode:
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s = D[1]
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if not s:
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raise Exception("Could not find s")
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if libcxx_version == 14:
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location_sp = s[0] if layoutModeIsDSC else s[1]
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size = size_mode_value if layoutModeIsDSC else ((size_mode_value >> 1) % 256)
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elif libcxx_version == 15:
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location_sp = s[0] if layoutModeIsDSC else s[2]
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size = size_mode_value
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else:
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l = D[0]
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if not l:
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raise Exception("Could not find l")
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# we can use the layout_decider object as the data pointer
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location_sp = layoutDecider if layoutModeIsDSC else l[2]
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size_vo = l[1]
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if not size_vo or not location_sp:
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raise Exception("Could not find size_vo or location_sp")
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size = size_vo.integer()
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if short_mode and location_sp:
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d.putCharArrayHelper(d.extractPointer(location_sp), size,
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charType, d.currentItemFormat())
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else:
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d.putCharArrayHelper(location_sp.integer(),
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size, charType, d.currentItemFormat())
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return
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# Examples for std::__1::string layouts for libcxx version 16
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#
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# std::string b = "asd"
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#
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# b = {
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# static __endian_factor = 2,
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# __r_ = {
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# <std::__1::__compressed_pair_elem<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >::__rep, 0, false>> = {
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# __value_ = {{
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# __l = {
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# {__is_long_ = 0, __cap_ = 842641539},
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# __size_ = 140737353746888,
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# __data_ = 0x7ffff7fa0a20 <std::__1::codecvt<wchar_t, char, __mbstate_t>::id> \"\\377\\377\\377\\377\\377\\377\\377\\377\\006\"
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# },
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# __s = {
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# {__is_long_ = 0 '\\000', __size_ = 3 '\\003'},
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# __padding_ = 0x7fffffffd859 \"asd\",
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# __data_ = \"asd\\000\\000\\000\\000\\310\\t\\372\\367\\377\\177\\000\\000 \\n\\372\\367\\377\\177\\000\"
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# },
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# __r = {
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# __words = {1685283078, 140737353746888, 140737353746976}
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# }
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# }}
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# },
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# <std::__1::__compressed_pair_elem<std::__1::allocator<char>, 1, true>> = {
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# <std::__1::allocator<char>> = {
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# <std::__1::__non_trivial_if<true, std::__1::allocator<char> >> = {
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# <No data fields>
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# },
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# <No data fields>
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# },
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# <No data fields>
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# },
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# <No data fields>
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# },
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# static npos = 18446744073709551615
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# }
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#
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#
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# std::string c = "asdlonasdlongstringasdlongstringasdlongstringasdlongstringgstring"
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#
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# c = {
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# static __endian_factor = 2,
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# __r_ = {
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# <std::__1::__compressed_pair_elem<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >::__rep, 0, false>> = {
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# __value_ = {{
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# __l = {
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# {__is_long_ = 1, __cap_ = 40}, # size_type: __cap_
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# __size_ = 65,
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# __data_ = 0x5555555592a0 \"asdlonasdlongstringasdlongstringasdlongstringasdlongstringgstring\"
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# },
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# __s = {
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# {__is_long_ = 1 '\\001', __size_ = 40 '('},
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# __padding_ = 0x7fffffffd831 \"\", __data_ = \"\\000\\000\\000\\000\\000\\000\\000A\\000\\000\\000\\000\\000\\000\\000\\240\\222UUUU\\000\"
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# },
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# __r = {
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# __words = {81, 65, 93824992252576}
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# }
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# }}
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# },
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# <std::__1::__compressed_pair_elem<std::__1::allocator<char>, 1, true>> = {
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# <std::__1::allocator<char>> = {
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# <std::__1::__non_trivial_if<true, std::__1::allocator<char> >> = {
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# <No data fields>
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# },
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# <No data fields>
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# },
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# <No data fields
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# >},
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# <No data fields>
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# },
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# static npos = 18446744073709551615
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# }"
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def qdump__std____1__string(d, value):
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try:
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std_1_string_dumper_v2(d, value)
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except Exception as eV2:
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try:
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std_1_string_dumper_v1(d, value)
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except Exception as eV1:
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d.putValue("Could not parse: %s, %s" % (eV1, eV2))
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def qdump__std____1__wstring(d, value):
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try:
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std_1_string_dumper_v2(d, value)
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except Exception as eV2:
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try:
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std_1_string_dumper_v1(d, value)
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except Exception as eV1:
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d.putValue("Could not parse: %s, %s" % (eV1, eV2))
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def qdump__std____1__basic_string(d, value):
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innerType = value.type[0].name
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if innerType in ("char", "char8_t", "char16_t"):
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qdump__std____1__string(d, value)
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elif innerType in ("wchar_t", "char32_t"):
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qdump__std____1__wstring(d, value)
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charType = value.type[0]
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blob = bytes(value.data())
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r0, r1, r2 = struct.unpack(d.packCode + 'QQQ', blob)
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if d.isLldb and d.isArmMac:
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is_long = r2 >> 63
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if is_long:
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# [---------------- data ptr ---------------] 63:0
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# [------------------ size ----------------]
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# [?---------------- alloc ----------------]
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data = r0
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size = r1
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else:
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# [------------------- data ----------------] 63:0
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# [------------------- data ----------------]
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# [?ssss-------------- data ----------------]
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data = value.laddress
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size = (r2 >> 56) & 255
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else:
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d.warn("UNKNOWN INNER TYPE %s" % innerType)
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is_long = r0 & 1
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if is_long:
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# [------------------ alloc ---------------?] 63:0
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# [------------------- size ----------------]
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# [----------------- data ptr --------------]
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data = r2
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size = r1
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else:
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# [------------------- data ----------sssss?] 63:0
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# [------------------- data ----------------]
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# [------------------- data ----------------]
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data = value.laddress + charType.size()
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size = (r0 & 255) // 2
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d.putCharArrayHelper(data, size, charType)
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def qdump__std____1__shared_ptr(d, value):
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@@ -1312,6 +1312,8 @@ class Dumper(DumperBase):
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self.reportResult('error="No frame"', args)
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return
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self.isArmMac = frame.module.triple.startswith('arm64-apple')
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self.output = []
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isPartial = len(self.partialVariable) > 0
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