From 53af1e792db9f52c99daca47e6cc4bf77c1a6a8d Mon Sep 17 00:00:00 2001 From: Kostya Shishkov Date: Mon, 31 Mar 2025 18:01:37 +0200 Subject: [PATCH] h264: rearrange some instructions in cabac_coder --- nihav-itu/src/codecs/h264/cabac_coder.rs | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/nihav-itu/src/codecs/h264/cabac_coder.rs b/nihav-itu/src/codecs/h264/cabac_coder.rs index 82c20b0..2ff09e2 100644 --- a/nihav-itu/src/codecs/h264/cabac_coder.rs +++ b/nihav-itu/src/codecs/h264/cabac_coder.rs @@ -167,14 +167,14 @@ impl<'a> CABAC<'a> { asm!( // unpack state "movzx {state_idx:e}, byte ptr [{ctx} + 0x18 + {idx}]", + "movzx {tmp}, word ptr [{ctx} + 0x418]", "mov {val_mps:x}, {state_idx:x}", "and {state_idx}, 0x3F", "and {val_mps:r}, 0x80", - "movzx {tmp}, word ptr [{ctx} + 0x418]", - "mov {bit:r}, {val_mps:r}", "shr {tmp}, 6", - "and {tmp}, 3", + "mov {bit:r}, {val_mps:r}", "lea {range_lps:r}, {range_tab}[rip]", + "and {tmp}, 3", "lea {range_lps:r}, [{range_lps:r} + {state_idx} * 4]", "movzx {range_lps:x}, byte ptr [{range_lps:r} + {tmp}]", // self.cod_range -= range_lps; -- 2.39.5