diff options
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/zig-gdb.py | 98 |
1 files changed, 97 insertions, 1 deletions
diff --git a/tools/zig-gdb.py b/tools/zig-gdb.py index b6ba4a7baf..ff1b20bb74 100644 --- a/tools/zig-gdb.py +++ b/tools/zig-gdb.py @@ -1,8 +1,9 @@ # pretty printing for stage1, stage2 and the standard library # put "source /path/to/zig-gdb.py" in ~/.gdbinit to load it automatically -import gdb.printing import re +import gdb.printing +import gdb.types class ZigListPrinter: def __init__(self, val): @@ -184,6 +185,95 @@ class ArrayHashMapPrinter: return 'map' return 'array' +class TypePrinter: + no_payload_count = 4096 + + # Keep in sync with src/type.zig + # Types which have no payload do not need to be entered here. + payload_type_names = { + 'array_u8': 'type.Len', + 'array_u8_sentinel_0': 'Len', + + 'single_const_pointer': 'ElemType', + 'single_mut_pointer': 'ElemType', + 'many_const_pointer': 'ElemType', + 'many_mut_pointer': 'ElemType', + 'c_const_pointer': 'ElemType', + 'c_mut_pointer': 'ElemType', + 'const_slice': 'ElemType', + 'mut_slice': 'ElemType', + 'optional': 'ElemType', + 'optional_single_mut_pointer': 'ElemType', + 'optional_single_const_pointer': 'ElemType', + 'anyframe_T': 'ElemType', + + 'int_signed': 'Bits', + 'int_unsigned': 'Bits', + + 'error_set': 'ErrorSet', + 'error_set_inferred': 'ErrorSetInferred', + 'error_set_merged': 'ErrorSetMerged', + + 'array': 'Array', + 'vector': 'Array', + + 'array_sentinel': 'ArraySentinel', + 'pointer': 'Pointer', + 'function': 'Function', + 'error_union': 'ErrorUnion', + 'error_set_single': 'Name', + 'opaque': 'Opaque', + 'struct': 'Struct', + 'union': 'Union', + 'union_tagged': 'Union', + 'enum_full, .enum_nonexhaustive': 'EnumFull', + 'enum_simple': 'EnumSimple', + 'enum_numbered': 'EnumNumbered', + 'empty_struct': 'ContainerScope', + 'tuple': 'Tuple', + 'anon_struct': 'AnonStruct', + } + + def __init__(self, val): + self.val = val + + def tag(self): + tag_if_small_enough = self.val['tag_if_small_enough'] + tag_type = tag_if_small_enough.type + + if tag_if_small_enough < TypePrinter.no_payload_count: + return tag_if_small_enough + else: + return self.val['ptr_otherwise'].dereference()['tag'] + + def payload_type(self): + tag = self.tag() + if tag is None: + return None + + type_name = TypePrinter.payload_type_names.get(str(tag)) + if type_name is None: + return None + return gdb.lookup_type('struct type.%s' % type_name) + + def to_string(self): + tag = self.tag() + if tag is None: + return 'Type.(invalid type)' + if self.val['tag_if_small_enough'] < TypePrinter.no_payload_count: + return '.%s' % str(tag) + return None + + def children(self): + if self.val['tag_if_small_enough'] < TypePrinter.no_payload_count: + return + + yield ('tag', '.%s' % str(self.tag())) + + payload_type = self.payload_type() + if payload_type is not None: + yield ('payload', self.val['ptr_otherwise'].cast(payload_type.pointer()).dereference()['data']) + pp1 = gdb.printing.RegexpCollectionPrettyPrinter('Zig stage1 compiler') pp1.add_printer('Buf', '^Buf$', BufPrinter) pp1.add_printer('ZigList<char>', '^ZigList<char>$', BufPrinter) @@ -193,6 +283,7 @@ gdb.printing.register_pretty_printer(gdb.current_objfile(), pp1) pplang = gdb.printing.RegexpCollectionPrettyPrinter('Zig language') pplang.add_printer('Slice', '^\[\]u8', SliceStringPrinter) pplang.add_printer('Slice', '^\[\]', SlicePrinter) +gdb.printing.register_pretty_printer(gdb.current_objfile(), pplang) ppstd = gdb.printing.RegexpCollectionPrettyPrinter('Zig standard library') ppstd.add_printer('ArrayList', r'^std\.array_list\.ArrayListAligned(Unmanaged)?\(.*\)$', ArrayListPrinter) @@ -200,3 +291,8 @@ ppstd.add_printer('MultiArrayList', r'^std\.multi_array_list\.MultiArrayList\(.* ppstd.add_printer('HashMap', r'^std\.hash_map\.HashMap(Unmanaged)?\(.*\)$', HashMapPrinter) ppstd.add_printer('ArrayHashMap', r'^std\.array_hash_map\.ArrayHashMap(Unmanaged)?\(.*\)$', ArrayHashMapPrinter) gdb.printing.register_pretty_printer(gdb.current_objfile(), ppstd) + +pp2 = gdb.printing.RegexpCollectionPrettyPrinter('Zig stage2 compiler') +ppstd.add_printer('Type', r'^type\.Type$', TypePrinter) +gdb.printing.register_pretty_printer(gdb.current_objfile(), pp2) + |