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lldb: add pretty printer for cau and nav indices

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This commit is contained in:
Jacob Young
2024-12-20 16:37:25 -05:00
parent 5c76e08f49
commit 5776d8f270
2 changed files with 131 additions and 49 deletions
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54
tools/lldb_pretty_printers.py
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@@ -18,17 +18,14 @@ def create_struct(parent, name, struct_type, inits):
for field in struct_type.fields:
field_size = field.type.size
field_init = inits[field.name]
field_init_type = type(field_init)
if field_init_type == bool:
field_bytes = bytes([field_init])
elif field_init_type == int:
if isinstance(field_init, int):
match struct_data.byte_order:
case lldb.eByteOrderLittle:
byte_order = 'little'
case lldb.eByteOrderBig:
byte_order = 'big'
field_bytes = field_init.to_bytes(field_size, byte_order, signed=field.type.GetTypeFlags() & lldb.eTypeIsSigned != 0)
elif field_init_type == lldb.SBValue:
elif isinstance(field_init_type, lldb.SBValue):
field_bytes = field_init.data.uint8
else: return
match struct_data.byte_order:
@@ -731,6 +728,7 @@ class root_InternPool_Local_List_SynthProvider:
expr_path_re = re.compile(r'\{([^}]+)%([^%#}]+)(?:#([^%#}]+))?\}')
def root_InternPool_Index_SummaryProvider(value, _=None):
unwrapped = value.GetChildMemberWithName('unwrapped')
if not unwrapped: return '' # .none
tag = unwrapped.GetChildMemberWithName('tag')
tag_value = tag.value
summary = tag.CreateValueFromType(tag.type).GetChildMemberWithName('encodings').GetChildMemberWithName(tag_value.removeprefix('.')).GetChildMemberWithName('summary')
@@ -749,8 +747,8 @@ class root_InternPool_Index_SynthProvider:
if wrapped == (1 << 32) - 1: return
unwrapped_type = self.value.type.FindDirectNestedType('Unwrapped')
ip = self.value.CreateValueFromType(unwrapped_type).GetChildMemberWithName('debug_state').GetChildMemberWithName('intern_pool').GetNonSyntheticValue().GetChildMemberWithName('?')
tid_width, tid_shift_30 = ip.GetChildMemberWithName('tid_width').unsigned, ip.GetChildMemberWithName('tid_shift_30').unsigned
self.unwrapped = create_struct(self.value, '.unwrapped', unwrapped_type, { 'tid': wrapped >> tid_shift_30 & (1 << tid_width) - 1, 'index': wrapped & (1 << tid_shift_30) - 1 })
tid_shift_30 = ip.GetChildMemberWithName('tid_shift_30').unsigned
self.unwrapped = create_struct(self.value, '.unwrapped', unwrapped_type, { 'tid': wrapped >> tid_shift_30, 'index': wrapped & (1 << tid_shift_30) - 1 })
def has_children(self): return True
def num_children(self): return 0
def get_child_index(self, name):
@@ -870,9 +868,9 @@ class root_InternPool_Index_Unwrapped_SynthProvider:
except: pass
def root_InternPool_String_SummaryProvider(value, _=None):
wrapped = value.unsigned
ip = value.CreateValueFromType(value.type).GetChildMemberWithName('debug_state').GetChildMemberWithName('intern_pool').GetNonSyntheticValue().GetChildMemberWithName('?')
tid_shift_32 = ip.GetChildMemberWithName('tid_shift_32').unsigned
wrapped = value.unsigned
locals_value = ip.GetChildMemberWithName('locals').GetSyntheticValue()
local_value = locals_value.child[wrapped >> tid_shift_32]
if local_value is None:
@@ -882,6 +880,44 @@ def root_InternPool_String_SummaryProvider(value, _=None):
string.format = lldb.eFormatCString
return string.value
class root_InternPool_Cau_Index_SynthProvider:
def __init__(self, value, _=None): self.value = value
def update(self):
self.cau = None
wrapped = self.value.unsigned
if wrapped == (1 << 32) - 1: return
ip = self.value.CreateValueFromType(self.value.type).GetChildMemberWithName('debug_state').GetChildMemberWithName('intern_pool').GetNonSyntheticValue().GetChildMemberWithName('?')
tid_shift_31 = ip.GetChildMemberWithName('tid_shift_31').unsigned
locals_value = ip.GetChildMemberWithName('locals').GetSyntheticValue()
local_value = locals_value.child[wrapped >> tid_shift_31]
if local_value is None:
wrapped = 0
local_value = locals_value.child[0]
self.cau = local_value.GetChildMemberWithName('shared').GetChildMemberWithName('caus').GetChildMemberWithName('view').GetChildMemberWithName('0').child[wrapped & (1 << tid_shift_31) - 1]
def has_children(self): return self.cau.GetNumChildren(1) > 0
def num_children(self): return self.cau.GetNumChildren()
def get_child_index(self, name): return self.cau.GetIndexOfChildWithName(name)
def get_child_at_index(self, index): return self.cau.GetChildAtIndex(index)
class root_InternPool_Nav_Index_SynthProvider:
def __init__(self, value, _=None): self.value = value
def update(self):
self.nav = None
wrapped = self.value.unsigned
if wrapped == (1 << 32) - 1: return
ip = self.value.CreateValueFromType(self.value.type).GetChildMemberWithName('debug_state').GetChildMemberWithName('intern_pool').GetNonSyntheticValue().GetChildMemberWithName('?')
tid_shift_32 = ip.GetChildMemberWithName('tid_shift_32').unsigned
locals_value = ip.GetChildMemberWithName('locals').GetSyntheticValue()
local_value = locals_value.child[wrapped >> tid_shift_32]
if local_value is None:
wrapped = 0
local_value = locals_value.child[0]
self.nav = local_value.GetChildMemberWithName('shared').GetChildMemberWithName('navs').GetChildMemberWithName('view').child[wrapped & (1 << tid_shift_32) - 1]
def has_children(self): return self.nav.GetNumChildren(1) > 0
def num_children(self): return self.nav.GetNumChildren()
def get_child_index(self, name): return self.nav.GetIndexOfChildWithName(name)
def get_child_at_index(self, index): return self.nav.GetChildAtIndex(index)
# Initialize
def add(debugger, *, category, regex=False, type, identifier=None, synth=False, inline_children=False, expand=False, summary=False):
@@ -937,3 +973,5 @@ def __lldb_init_module(debugger, _=None):
add(debugger, category='zig', type='root.InternPool.Index', synth=True, summary=True)
add(debugger, category='zig', type='root.InternPool.Index.Unwrapped', synth=True)
add(debugger, category='zig', regex=True, type=r'^root\.InternPool\.(Optional)?(NullTerminated)?String$', identifier='root_InternPool_String', summary=True)
add(debugger, category='zig', regex=True, type=r'^root\.InternPool\.Cau\.Index(\.Optional)?$', identifier='root_InternPool_Cau_Index', synth=True)
add(debugger, category='zig', regex=True, type=r'^root\.InternPool\.Nav\.Index(\.Optional)?$', identifier='root_InternPool_Nav_Index', synth=True)