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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
commit | 698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch) | |
tree | 173a775858bd501c378080a10dca74132f05bc50 /src/etc/gdb_lookup.py | |
parent | Initial commit. (diff) | |
download | rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.tar.xz rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.zip |
Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | src/etc/gdb_lookup.py | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/src/etc/gdb_lookup.py b/src/etc/gdb_lookup.py new file mode 100644 index 000000000..292e91b4d --- /dev/null +++ b/src/etc/gdb_lookup.py @@ -0,0 +1,92 @@ +import gdb +import re + +from gdb_providers import * +from rust_types import * + + +_gdb_version_matched = re.search('([0-9]+)\\.([0-9]+)', gdb.VERSION) +gdb_version = [int(num) for num in _gdb_version_matched.groups()] if _gdb_version_matched else [] + +def register_printers(objfile): + objfile.pretty_printers.append(lookup) + + +# BACKCOMPAT: rust 1.35 +def is_hashbrown_hashmap(hash_map): + return len(hash_map.type.fields()) == 1 + + +def classify_rust_type(type): + type_class = type.code + if type_class == gdb.TYPE_CODE_STRUCT: + return classify_struct(type.tag, type.fields()) + if type_class == gdb.TYPE_CODE_UNION: + return classify_union(type.fields()) + + return RustType.OTHER + + +def check_enum_discriminant(valobj): + content = valobj[valobj.type.fields()[0]] + fields = content.type.fields() + if len(fields) > 1: + discriminant = int(content[fields[0]]) + 1 + if discriminant > len(fields): + # invalid discriminant + return False + return True + + +def lookup(valobj): + rust_type = classify_rust_type(valobj.type) + + if rust_type == RustType.ENUM: + # use enum provider only for GDB <7.12 + if gdb_version[0] < 7 or (gdb_version[0] == 7 and gdb_version[1] < 12): + if check_enum_discriminant(valobj): + return EnumProvider(valobj) + + if rust_type == RustType.STD_STRING: + return StdStringProvider(valobj) + if rust_type == RustType.STD_OS_STRING: + return StdOsStringProvider(valobj) + if rust_type == RustType.STD_STR: + return StdStrProvider(valobj) + if rust_type == RustType.STD_SLICE: + return StdSliceProvider(valobj) + if rust_type == RustType.STD_VEC: + return StdVecProvider(valobj) + if rust_type == RustType.STD_VEC_DEQUE: + return StdVecDequeProvider(valobj) + if rust_type == RustType.STD_BTREE_SET: + return StdBTreeSetProvider(valobj) + if rust_type == RustType.STD_BTREE_MAP: + return StdBTreeMapProvider(valobj) + if rust_type == RustType.STD_HASH_MAP: + if is_hashbrown_hashmap(valobj): + return StdHashMapProvider(valobj) + else: + return StdOldHashMapProvider(valobj) + if rust_type == RustType.STD_HASH_SET: + hash_map = valobj[valobj.type.fields()[0]] + if is_hashbrown_hashmap(hash_map): + return StdHashMapProvider(valobj, show_values=False) + else: + return StdOldHashMapProvider(hash_map, show_values=False) + + if rust_type == RustType.STD_RC: + return StdRcProvider(valobj) + if rust_type == RustType.STD_ARC: + return StdRcProvider(valobj, is_atomic=True) + + if rust_type == RustType.STD_CELL: + return StdCellProvider(valobj) + if rust_type == RustType.STD_REF: + return StdRefProvider(valobj) + if rust_type == RustType.STD_REF_MUT: + return StdRefProvider(valobj) + if rust_type == RustType.STD_REF_CELL: + return StdRefCellProvider(valobj) + + return None |