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GDB: replace match statements with if statements in gdb debug script so it works with lower versions (#18226)

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Luis Carilla Ternero 2025-04-02 11:56:16 +02:00 • committed by GitHub
parent a9d4b49252
commit 02d58faad4
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2 changed files with 120 additions and 130 deletions
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125
scripts/gdb/php_gdb.py
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@ -112,28 +112,27 @@ class ZendTypePrettyPrinter(gdb.printing.PrettyPrinter):
for bit in range(0, type_mask_size):
if type_mask & (1 << bit):
type_name = ZendTypeBits.zendTypeName(bit)
match type_name:
case None:
parts.append('(1<<%d)' % bit)
case 'list':
list = t['ptr'].cast(gdb.lookup_type('zend_type_list').pointer())
num_types = int(list['num_types'])
types = list['types'].dereference().cast(gdb.lookup_type('zend_type').array(num_types))
for i in range(0, num_types):
str = self.format_type(types[i])
if any((c in set('|&()')) for c in str):
str = '(%s)' % str
parts.append(str)
case 'union' | 'arena':
meta.append(type_name)
case 'intersection':
meta.append(type_name)
separator = '&'
case 'name':
str = t['ptr'].cast(gdb.lookup_type('zend_string').pointer())
parts.append(format_zstr(str))
case _:
parts.append(type_name)
if type_name is None:
parts.append('(1<<%d)' % bit)
elif type_name == 'list':
list_ptr = t['ptr'].cast(gdb.lookup_type('zend_type_list').pointer())
num_types = int(list_ptr['num_types'])
types = list_ptr['types'].dereference().cast(gdb.lookup_type('zend_type').array(num_types))
for i in range(0, num_types):
type_str = self.format_type(types[i])
if any((c in set('|&()')) for c in type_str):
type_str = '(%s)' % type_str
parts.append(type_str)
elif type_name == 'union' or type_name == 'arena':
meta.append(type_name)
elif type_name == 'intersection':
meta.append(type_name)
separator = '&'
elif type_name == 'name':
name_str = t['ptr'].cast(gdb.lookup_type('zend_string').pointer())
parts.append(format_zstr(name_str))
else:
parts.append(type_name)
str = separator.join(parts)
@ -403,15 +402,15 @@ class ZendFunctionPrettyPrinter(gdb.printing.PrettyPrinter):
self.val = val
def to_string(self):
match int(self.val['type']):
case ZendFnTypes.ZEND_INTERNAL_FUNCTION:
typestr = 'internal'
case ZendFnTypes.ZEND_USER_FUNCTION:
typestr = 'user'
case ZendFnTypes.ZEND_EVAL_CODE:
typestr = 'eval'
case _:
typestr = '???'
val_type = int(self.val['type'])
if val_type == ZendFnTypes.ZEND_INTERNAL_FUNCTION:
typestr = 'internal'
elif val_type == ZendFnTypes.ZEND_USER_FUNCTION:
typestr = 'user'
elif val_type == ZendFnTypes.ZEND_EVAL_CODE:
typestr = 'eval'
else:
typestr = '???'
if self.val['common']['function_name']:
namestr = format_zstr(self.val['common']['function_name'])
@ -831,13 +830,12 @@ class ZendRefTypeInfo:
bits = self._bits
type_bits = None
match type_name:
case 'string':
type_bits = self._str_bits
case 'array':
type_bits = self._array_bits
case 'object':
type_bits = self._obj_bits
if type_name == 'string':
type_bits = self._str_bits
elif type_name == 'array':
type_bits = self._array_bits
elif type_name == 'object':
type_bits = self._obj_bits
type_flags = flags & self._flags_mask
for i in range(0, 31):
@ -860,15 +858,14 @@ class ZendRefTypeInfo:
if (flags & (1<<self.bit('GC_NOT_COLLECTABLE'))) == 0:
gc_color = (flags >> self._info_shift) & self._gc_color
match gc_color:
case self._gc_black:
names.append('GC_BLACK')
case self._gc_white:
names.append('GC_WHITE')
case self._gc_grey:
names.append('GC_GREY')
case self._gc_purple:
names.append('GC_PURPLE')
if gc_color == self._gc_black:
names.append('GC_BLACK')
elif gc_color == self._gc_white:
names.append('GC_WHITE')
elif gc_color == self._gc_grey:
names.append('GC_GREY')
elif gc_color == self._gc_purple:
names.append('GC_PURPLE')
gc_address = (flags >> self._info_shift) & self._gc_address
if gc_address != 0:
@ -907,17 +904,16 @@ class ZendRefTypeInfo:
pattern = re.compile(r'#define (GC_[^\s]+)\s+((0x)?[0-9a-f]+)')
matches = pattern.findall(content)
for name, bit, _ in matches:
match name:
case 'GC_TYPE_MASK':
self._type_mask = int(bit, 0)
case 'GC_FLAGS_MASK':
self._flags_mask = int(bit, 0)
case 'GC_INFO_MASK':
self._info_mask = int(bit, 0)
case 'GC_INFO_SHIFT':
self._info_shift = int(bit, 0)
case 'GC_FLAGS_SHIFT':
self._flags_shift = int(bit, 0)
if name == 'GC_TYPE_MASK':
self._type_mask = int(bit, 0)
elif name == 'GC_FLAGS_MASK':
self._flags_mask = int(bit, 0)
elif name == 'GC_INFO_MASK':
self._info_mask = int(bit, 0)
elif name == 'GC_INFO_SHIFT':
self._info_shift = int(bit, 0)
elif name == 'GC_FLAGS_SHIFT':
self._flags_shift = int(bit, 0)
# IS_STR_INTERNED GC_IMMUTABLE
# IS_STR_PERMANENT (1<<8)
@ -928,13 +924,12 @@ class ZendRefTypeInfo:
bit = bits.get(val)
if bit == None:
continue
match type:
case 'STR':
target = str_bits
case 'ARRAY':
target = array_bits
case 'OBJ':
target = obj_bits
if type == 'STR':
target = str_bits
elif type == 'ARRAY':
target = array_bits
elif type == 'OBJ':
target = obj_bits
target[name] = int(bit)
# Hard coded because these are not exposed in header files