From 2aa4a82499d4becd2284cdb482213d541b8804dd Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 28 Apr 2024 16:29:10 +0200 Subject: Adding upstream version 86.0.1. Signed-off-by: Daniel Baumann --- js/src/gdb/mozilla/CellHeader.py | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) create mode 100644 js/src/gdb/mozilla/CellHeader.py (limited to 'js/src/gdb/mozilla/CellHeader.py') diff --git a/js/src/gdb/mozilla/CellHeader.py b/js/src/gdb/mozilla/CellHeader.py new file mode 100644 index 0000000000..8163e57e1b --- /dev/null +++ b/js/src/gdb/mozilla/CellHeader.py @@ -0,0 +1,25 @@ +# This Source Code Form is subject to the terms of the Mozilla Public +# License, v. 2.0. If a copy of the MPL was not distributed with this file, +# You can obtain one at http://mozilla.org/MPL/2.0/. + +import gdb + + +def get_header_ptr(value, ptr_t): + # Return the pointer stored in Cell::header_ for subclasses of + # TenuredCellWithNonGCPointer and CellWithTenuredGCPointer. + return value["header_"]["mValue"].cast(ptr_t) + + +def get_header_length_and_flags(value, cache): + # Return the length and flags values for subclasses of + # CellWithLengthAndFlags. + flags = value["header_"]["mValue"].cast(cache.uintptr_t) + try: + length = value["length_"] + except gdb.error: + # If we couldn't fetch the length directly, it must be stored + # within `flags`. + length = flags >> 32 + flags = flags % 2 ** 32 + return length, flags -- cgit v1.2.3