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| author | 2020-08-03 15:06:44 +0000 | |
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| committer | 2020-08-03 15:06:44 +0000 | |
| commit | b64793999546ed8adebaeebd9d8345d18db8927d (patch) | |
| tree | 4357c27b561d73b0e089727c6ed659f2ceff5f47 /gnu/llvm/utils/gdb-scripts/prettyprinters.py | |
| parent | Add support for UTF-8 DISPLAY-HINTs with octet length. For now only (diff) | |
| download | wireguard-openbsd-b64793999546ed8adebaeebd9d8345d18db8927d.tar.xz wireguard-openbsd-b64793999546ed8adebaeebd9d8345d18db8927d.zip | |
Remove LLVM 8.0.1 files.
Diffstat (limited to 'gnu/llvm/utils/gdb-scripts/prettyprinters.py')
| -rw-r--r-- | gnu/llvm/utils/gdb-scripts/prettyprinters.py | 328 |
1 files changed, 0 insertions, 328 deletions
diff --git a/gnu/llvm/utils/gdb-scripts/prettyprinters.py b/gnu/llvm/utils/gdb-scripts/prettyprinters.py deleted file mode 100644 index 7ddc33acb20..00000000000 --- a/gnu/llvm/utils/gdb-scripts/prettyprinters.py +++ /dev/null @@ -1,328 +0,0 @@ -from __future__ import print_function -import sys - -import gdb.printing - -class Iterator: - def __iter__(self): - return self - - if sys.version_info.major == 2: - def next(self): - return self.__next__() - - def children(self): - return self - -def escape_bytes(val, l): - return '"' + val.string(encoding='Latin-1', length=l).encode('unicode_escape').decode() + '"' - -class SmallStringPrinter: - """Print an llvm::SmallString object.""" - - def __init__(self, val): - self.val = val - - def to_string(self): - begin = self.val['BeginX'] - return escape_bytes(begin.cast(gdb.lookup_type('char').pointer()), self.val['Size']) - -class StringRefPrinter: - """Print an llvm::StringRef object.""" - - def __init__(self, val): - self.val = val - - def to_string(self): - return escape_bytes(self.val['Data'], self.val['Length']) - -class SmallVectorPrinter(Iterator): - """Print an llvm::SmallVector object.""" - - def __init__(self, val): - self.val = val - t = val.type.template_argument(0).pointer() - self.begin = val['BeginX'].cast(t) - self.size = val['Size'] - self.i = 0 - - def __next__(self): - if self.i == self.size: - raise StopIteration - ret = '[{}]'.format(self.i), (self.begin+self.i).dereference() - self.i += 1 - return ret - - def to_string(self): - return 'llvm::SmallVector of Size {}, Capacity {}'.format(self.size, self.val['Capacity']) - - def display_hint (self): - return 'array' - -class ArrayRefPrinter: - """Print an llvm::ArrayRef object.""" - - class _iterator: - def __init__(self, begin, end): - self.cur = begin - self.end = end - self.count = 0 - - def __iter__(self): - return self - - def __next__(self): - if self.cur == self.end: - raise StopIteration - count = self.count - self.count = self.count + 1 - cur = self.cur - self.cur = self.cur + 1 - return '[%d]' % count, cur.dereference() - - if sys.version_info.major == 2: - next = __next__ - - def __init__(self, val): - self.val = val - - def children(self): - data = self.val['Data'] - return self._iterator(data, data + self.val['Length']) - - def to_string(self): - return 'llvm::ArrayRef of length %d' % (self.val['Length']) - - def display_hint (self): - return 'array' - -class ExpectedPrinter(Iterator): - """Print an llvm::Expected object.""" - - def __init__(self, val): - self.val = val - - def __next__(self): - val = self.val - if val is None: - raise StopIteration - self.val = None - if val['HasError']: - return ('error', val['ErrorStorage'].address.cast( - gdb.lookup_type('llvm::ErrorInfoBase').pointer()).dereference()) - return ('value', val['TStorage'].address.cast( - val.type.template_argument(0).pointer()).dereference()) - - def to_string(self): - return 'llvm::Expected{}'.format(' is error' if self.val['HasError'] else '') - -class OptionalPrinter(Iterator): - """Print an llvm::Optional object.""" - - def __init__(self, val): - self.val = val - - def __next__(self): - val = self.val - if val is None: - raise StopIteration - self.val = None - if not val['Storage']['hasVal']: - raise StopIteration - return ('value', val['Storage']['storage']['buffer'].address.cast( - val.type.template_argument(0).pointer()).dereference()) - - def to_string(self): - return 'llvm::Optional{}'.format('' if self.val['Storage']['hasVal'] else ' is not initialized') - -class DenseMapPrinter: - "Print a DenseMap" - - class _iterator: - def __init__(self, key_info_t, begin, end): - self.key_info_t = key_info_t - self.cur = begin - self.end = end - self.advancePastEmptyBuckets() - self.first = True - - def __iter__(self): - return self - - def advancePastEmptyBuckets(self): - # disabled until the comments below can be addressed - # keeping as notes/posterity/hints for future contributors - return - n = self.key_info_t.name - is_equal = gdb.parse_and_eval(n + '::isEqual') - empty = gdb.parse_and_eval(n + '::getEmptyKey()') - tombstone = gdb.parse_and_eval(n + '::getTombstoneKey()') - # the following is invalid, GDB fails with: - # Python Exception <class 'gdb.error'> Attempt to take address of value - # not located in memory. - # because isEqual took parameter (for the unsigned long key I was testing) - # by const ref, and GDB - # It's also not entirely general - we should be accessing the "getFirst()" - # member function, not the 'first' member variable, but I've yet to figure - # out how to find/call member functions (especially (const) overloaded - # ones) on a gdb.Value. - while self.cur != self.end and (is_equal(self.cur.dereference()['first'], empty) or is_equal(self.cur.dereference()['first'], tombstone)): - self.cur = self.cur + 1 - - def __next__(self): - if self.cur == self.end: - raise StopIteration - cur = self.cur - v = cur.dereference()['first' if self.first else 'second'] - if not self.first: - self.cur = self.cur + 1 - self.advancePastEmptyBuckets() - self.first = True - else: - self.first = False - return 'x', v - - if sys.version_info.major == 2: - next = __next__ - - def __init__(self, val): - self.val = val - - def children(self): - t = self.val.type.template_argument(3).pointer() - begin = self.val['Buckets'].cast(t) - end = (begin + self.val['NumBuckets']).cast(t) - return self._iterator(self.val.type.template_argument(2), begin, end) - - def to_string(self): - return 'llvm::DenseMap with %d elements' % (self.val['NumEntries']) - - def display_hint(self): - return 'map' - -class TwinePrinter: - "Print a Twine" - - def __init__(self, val): - self._val = val - - def display_hint(self): - return 'string' - - def string_from_pretty_printer_lookup(self, val): - '''Lookup the default pretty-printer for val and use it. - - If no pretty-printer is defined for the type of val, print an error and - return a placeholder string.''' - - pp = gdb.default_visualizer(val) - if pp: - s = pp.to_string() - - # The pretty-printer may return a LazyString instead of an actual Python - # string. Convert it to a Python string. However, GDB doesn't seem to - # register the LazyString type, so we can't check - # "type(s) == gdb.LazyString". - if 'LazyString' in type(s).__name__: - s = s.value().address.string() - - else: - print(('No pretty printer for {} found. The resulting Twine ' + - 'representation will be incomplete.').format(val.type.name)) - s = '(missing {})'.format(val.type.name) - - return s - - def is_twine_kind(self, kind, expected): - if not kind.endswith(expected): - return False - # apparently some GDB versions add the NodeKind:: namespace - # (happens for me on GDB 7.11) - return kind in ('llvm::Twine::' + expected, - 'llvm::Twine::NodeKind::' + expected) - - def string_from_child(self, child, kind): - '''Return the string representation of the Twine::Child child.''' - - if self.is_twine_kind(kind, 'EmptyKind') or self.is_twine_kind(kind, 'NullKind'): - return '' - - if self.is_twine_kind(kind, 'TwineKind'): - return self.string_from_twine_object(child['twine'].dereference()) - - if self.is_twine_kind(kind, 'CStringKind'): - return child['cString'].string() - - if self.is_twine_kind(kind, 'StdStringKind'): - val = child['stdString'].dereference() - return self.string_from_pretty_printer_lookup(val) - - if self.is_twine_kind(kind, 'StringRefKind'): - val = child['stringRef'].dereference() - pp = StringRefPrinter(val) - return pp.to_string() - - if self.is_twine_kind(kind, 'SmallStringKind'): - val = child['smallString'].dereference() - pp = SmallStringPrinter(val) - return pp.to_string() - - if self.is_twine_kind(kind, 'CharKind'): - return chr(child['character']) - - if self.is_twine_kind(kind, 'DecUIKind'): - return str(child['decUI']) - - if self.is_twine_kind(kind, 'DecIKind'): - return str(child['decI']) - - if self.is_twine_kind(kind, 'DecULKind'): - return str(child['decUL'].dereference()) - - if self.is_twine_kind(kind, 'DecLKind'): - return str(child['decL'].dereference()) - - if self.is_twine_kind(kind, 'DecULLKind'): - return str(child['decULL'].dereference()) - - if self.is_twine_kind(kind, 'DecLLKind'): - return str(child['decLL'].dereference()) - - if self.is_twine_kind(kind, 'UHexKind'): - val = child['uHex'].dereference() - return hex(int(val)) - - print(('Unhandled NodeKind {} in Twine pretty-printer. The result will be ' - 'incomplete.').format(kind)) - - return '(unhandled {})'.format(kind) - - def string_from_twine_object(self, twine): - '''Return the string representation of the Twine object twine.''' - - lhs_str = '' - rhs_str = '' - - lhs = twine['LHS'] - rhs = twine['RHS'] - lhs_kind = str(twine['LHSKind']) - rhs_kind = str(twine['RHSKind']) - - lhs_str = self.string_from_child(lhs, lhs_kind) - rhs_str = self.string_from_child(rhs, rhs_kind) - - return lhs_str + rhs_str - - def to_string(self): - return self.string_from_twine_object(self._val) - -pp = gdb.printing.RegexpCollectionPrettyPrinter("LLVMSupport") -pp.add_printer('llvm::SmallString', '^llvm::SmallString<.*>$', SmallStringPrinter) -pp.add_printer('llvm::StringRef', '^llvm::StringRef$', StringRefPrinter) -pp.add_printer('llvm::SmallVectorImpl', '^llvm::SmallVector(Impl)?<.*>$', SmallVectorPrinter) -pp.add_printer('llvm::ArrayRef', '^llvm::(Const)?ArrayRef<.*>$', ArrayRefPrinter) -pp.add_printer('llvm::Expected', '^llvm::Expected<.*>$', ExpectedPrinter) -pp.add_printer('llvm::Optional', '^llvm::Optional<.*>$', OptionalPrinter) -pp.add_printer('llvm::DenseMap', '^llvm::DenseMap<.*>$', DenseMapPrinter) -pp.add_printer('llvm::Twine', '^llvm::Twine$', TwinePrinter) -gdb.printing.register_pretty_printer(gdb.current_objfile(), pp) |
