> Relativize initial_sp in interpreter frames. > > By changing the "initial_sp" (AKA "monitor_block_top" or "monitors" on > PowerPC) member in interpreter frames from being an absolute address into an > offset that is relative to the frame pointer, we don't need to change the > value as we freeze and thaw frames of virtual threads. This is since we might > freeze and thaw from and to different worker threads, so the absolute address > to locals might change, but the offset from the frame pointer will be > constant. > > This subtask only handles relativization of "initial_sp" and > "monitor_block_top" since it's the same slot in interpreter frames (roughly > the same as "monitors" on PowerPC). Relativization of other interpreter frame > members are handled in other subtasks to JDK-8289296. > > Tested tier1-tier7 on supported platforms. The rest was sanity tested using > Qemu.
Fredrik Bredberg has updated the pull request incrementally with one additional commit since the last revision: Updated after review. ------------- Changes: - all: https://git.openjdk.org/jdk/pull/15815/files - new: https://git.openjdk.org/jdk/pull/15815/files/dad25b66..29b576fd Webrevs: - full: https://webrevs.openjdk.org/?repo=jdk&pr=15815&range=01 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=15815&range=00-01 Stats: 29 lines in 6 files changed: 0 ins; 13 del; 16 mod Patch: https://git.openjdk.org/jdk/pull/15815.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/15815/head:pull/15815 PR: https://git.openjdk.org/jdk/pull/15815
