diff options
Diffstat (limited to 'plugins/dfsound/arm_utils.s')
| -rw-r--r-- | plugins/dfsound/arm_utils.s | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/plugins/dfsound/arm_utils.s b/plugins/dfsound/arm_utils.s new file mode 100644 index 0000000..a278174 --- /dev/null +++ b/plugins/dfsound/arm_utils.s @@ -0,0 +1,98 @@ +/* + * (C) GraÅžvydas "notaz" Ignotas, 2011 + * + * This work is licensed under the terms of any of these licenses + * (at your option): + * - GNU GPL, version 2 or later. + * - GNU LGPL, version 2.1 or later. + * See the COPYING file in the top-level directory. + */ + + +.text +.align 2 + + +.global mix_chan @ (int start, int count, int lv, int rv) +mix_chan: + vmov.32 d14[0], r2 + vmov.32 d14[1], r3 @ multipliers + mov r12, r0 + movw r0, #:lower16:ChanBuf + movw r2, #:lower16:SSumLR + movt r0, #:upper16:ChanBuf + movt r2, #:upper16:SSumLR + add r0, r12, lsl #2 + add r2, r12, lsl #3 +0: + vldmia r0!, {d0-d1} + vldmia r2, {d2-d5} + vmul.s32 d10, d14, d0[0] + vmul.s32 d11, d14, d0[1] + vmul.s32 d12, d14, d1[0] + vmul.s32 d13, d14, d1[1] + vsra.s32 q1, q5, #14 + vsra.s32 q2, q6, #14 + subs r1, #4 + blt mc_finish + vstmia r2!, {d2-d5} + bgt 0b + nop + bxeq lr + +mc_finish: + vstmia r2!, {d2} + cmp r1, #2 + vstmiage r2!, {d3} + cmp r1, #3 + vstmiage r2!, {d4} + bx lr + + +.global mix_chan_rvb @ (int start, int count, int lv, int rv) +mix_chan_rvb: + vmov.32 d14[0], r2 + vmov.32 d14[1], r3 @ multipliers + mov r12, r0 + movw r0, #:lower16:ChanBuf + movw r3, #:lower16:sRVBStart + movw r2, #:lower16:SSumLR + movt r0, #:upper16:ChanBuf + movt r3, #:upper16:sRVBStart + movt r2, #:upper16:SSumLR + ldr r3, [r3] + add r0, r12, lsl #2 + add r2, r12, lsl #3 + add r3, r12, lsl #3 +0: + vldmia r0!, {d0-d1} + vldmia r2, {d2-d5} + vldmia r3, {d6-d9} + vmul.s32 d10, d14, d0[0] + vmul.s32 d11, d14, d0[1] + vmul.s32 d12, d14, d1[0] + vmul.s32 d13, d14, d1[1] + vsra.s32 q1, q5, #14 + vsra.s32 q2, q6, #14 + vsra.s32 q3, q5, #14 + vsra.s32 q4, q6, #14 + subs r1, #4 + blt mcr_finish + vstmia r2!, {d2-d5} + vstmia r3!, {d6-d9} + bgt 0b + nop + bxeq lr + +mcr_finish: + vstmia r2!, {d2} + vstmia r3!, {d6} + cmp r1, #2 + vstmiage r2!, {d3} + vstmiage r3!, {d7} + cmp r1, #3 + vstmiage r2!, {d4} + vstmiage r3!, {d8} + bx lr + +@ vim:filetype=armasm |