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| author | Takamichi Horikawa <takamichiho@gmail.com> | 2017-03-30 23:31:39 +0000 |
|---|---|---|
| committer | Takamichi Horikawa <takamichiho@gmail.com> | 2017-03-30 23:31:39 +0000 |
| commit | f47eba7d7d4c6a1d9501e027b63bbab04bb7d417 (patch) | |
| tree | c6d8ebf4f84b76e9d32d4998d28a69d36fddd4a9 /fmdsp/fmdsp-vramlookup-neon.s | |
| parent | a86bb48b9f3acb081afa92e5efc50d0192c4f68c (diff) | |
add NEON optimization
Diffstat (limited to 'fmdsp/fmdsp-vramlookup-neon.s')
| -rw-r--r-- | fmdsp/fmdsp-vramlookup-neon.s | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/fmdsp/fmdsp-vramlookup-neon.s b/fmdsp/fmdsp-vramlookup-neon.s new file mode 100644 index 0000000..3cfb957 --- /dev/null +++ b/fmdsp/fmdsp-vramlookup-neon.s @@ -0,0 +1,83 @@ +@ neon register map +@ 0, 3, 6, 9, 12, 15, 18, 21 b +@ 1, 4, 7, 10, 13, 16, 19, 22 g +@ 2, 5, 9, 11, 14, 17, 20, 23 r + +@ 16, 17, 18, 19, 20, 21, 22, 23 vram + +@ 26, 27 r palette +@ 28, 29 g palette +@ 30, 31 b palette + +.global fmdsp_vramlookup_neon + +@ r0: uint8_t *vram32 +@ 4 bytes aligned +@ b, g, r, 0, +@ r1: const uint8_t *vram +@ r2: const uint8_t *palette +@ r0, g0, b0, r1, g1, b1, ... +@ r3: int stride +fmdsp_vramlookup_neon: + push {lr} +@ load palette + vld3.8 {d26, d28, d30}, [r2]! + vld1.8 {d27}, [r2]! + vld1.8 {d29}, [r2]! + vld1.8 {d31}, [r2]! + + mov r14, #400 +.loopcol: + mov r2, r0 + mov r12, #10 +.looprow: +@ row address + +@ load vram + vld1.8 {d16-d19}, [r1]! + vld1.8 {d20-d23}, [r1]! + +@ lookup + vtbl.8 d0, {d30-d31}, d16 + vtbl.8 d1, {d28-d29}, d16 + vtbl.8 d2, {d26-d27}, d16 + vtbl.8 d3, {d30-d31}, d17 + vtbl.8 d4, {d28-d29}, d17 + vtbl.8 d5, {d26-d27}, d17 + vtbl.8 d6, {d30-d31}, d18 + vtbl.8 d7, {d28-d29}, d18 + vtbl.8 d8, {d26-d27}, d18 + vtbl.8 d9, {d30-d31}, d19 + vtbl.8 d10, {d28-d29}, d19 + vtbl.8 d11, {d26-d27}, d19 + vtbl.8 d12, {d30-d31}, d20 + vtbl.8 d13, {d28-d29}, d20 + vtbl.8 d14, {d26-d27}, d20 + vtbl.8 d15, {d30-d31}, d21 + vtbl.8 d16, {d28-d29}, d21 + vtbl.8 d17, {d26-d27}, d21 + vtbl.8 d18, {d30-d31}, d22 + vtbl.8 d19, {d28-d29}, d22 + vtbl.8 d20, {d26-d27}, d22 + vtbl.8 d21, {d30-d31}, d23 + vtbl.8 d22, {d28-d29}, d23 + vtbl.8 d23, {d26-d27}, d23 + +@ store vram32 + vst4.8 {d0-d3}, [r2]! + vst4.8 {d3-d6}, [r2]! + vst4.8 {d6-d9}, [r2]! + vst4.8 {d9-d12}, [r2]! + vst4.8 {d12-d15}, [r2]! + vst4.8 {d15-d18}, [r2]! + vst4.8 {d18-d21}, [r2]! + vst4.8 {d21-d24}, [r2]! + + subs r12, #1 + bne .looprow + + add r0, r3 + subs r14, #1 + bne .loopcol + + pop {pc} |