diff options
Diffstat (limited to 'frontend/arm_utils.s')
| -rw-r--r-- | frontend/arm_utils.s | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/frontend/arm_utils.s b/frontend/arm_utils.s index edaafb8..d74c8b3 100644 --- a/frontend/arm_utils.s +++ b/frontend/arm_utils.s @@ -45,4 +45,25 @@ bgr555_to_rgb565: bx lr + +.global bgr888_to_rgb888 +bgr888_to_rgb888: + @ r2 /= 48 + mov r2, r2, lsr #4 + movw r3, #0x5556 + movt r3, #0x5555 + umull r12,r2, r3, r2 +0: + vld3.8 {d0-d2}, [r1, :64]! + vld3.8 {d3-d5}, [r1, :64]! + vswp d0, d2 + vswp d3, d5 + vst3.8 {d0-d2}, [r0, :64]! + vst3.8 {d3-d5}, [r0, :64]! + subs r2, r2, #1 + bne 0b + + bx lr + + @ vim:filetype=armasm |