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authorrin <rin@NetBSD.org>2021-09-18 06:31:46 +0000
committerrin <rin@NetBSD.org>2021-09-18 06:31:46 +0000
commit63d0b6338f7bffaeadbc9d918b33b18f448d99f7 (patch)
tree28589116f21b6e2650255718e034948375adcd8e /sys/dev/microcode/run
parent0cea7c3aa9db057e7ded5aad50ad1391872e10dc (diff)
cksum128mod: Prepare jump address by 'mova', instead of 'mov.l'.
Since both this 'mova' and 'and #imm' above must be used against r0, we need extra 'mov r0, r3'. However, this should still be good both for sh3 and sh4: - For sh3, 'mov.l' at odd half-word address is removed; pipeline hazard due to instruction fetch is resolved. - For sh4, data cache line is no longer assigned for this 'mov.l'. Also: - Upcoming __PIC__ support (in order to avoid text relocations when built in tests/net/in_cksum) becomes simpler; no need CALL_DATUM_LOCAL() for cksum128_tail. - Shave off 4 bytes from text. No regression is observed for sh3 (hpcsh) and sh4 (landisk).
Diffstat (limited to 'sys/dev/microcode/run')
0 files changed, 0 insertions, 0 deletions