2 * (C) GraÅžvydas "notaz" Ignotas, 2011
4 * This work is licensed under the terms of any of these licenses
6 * - GNU GPL, version 2 or later.
7 * - GNU LGPL, version 2.1 or later.
8 * See the COPYING file in the top-level directory.
11 #include "arm_features.h"
16 ptr_ChanBuf: .word ESYM(ChanBuf)
17 ptr_SSumLR: .word ESYM(SSumLR)
23 .macro load_varadr reg var
24 #if defined(__ARM_ARCH_7A__) && !defined(__PIC__)
25 movw \reg, #:lower16:ESYM(\var)
26 movt \reg, #:upper16:ESYM(\var)
27 #elif defined(__ARM_ARCH_7A__) && defined(__MACH__)
28 movw \reg, #:lower16:(ptr_\var-(1678f+8))
29 movt \reg, #:upper16:(ptr_\var-(1678f+8))
39 FUNCTION(mix_chan): @ (int start, int count, int lv, int rv)
41 vmov.32 d14[1], r3 @ multipliers
42 load_varadr r2, SSumLR
44 load_varadr r0, ChanBuf
51 vmul.s32 d10, d14, d0[0]
52 vmul.s32 d11, d14, d0[1]
53 vmul.s32 d12, d14, d1[0]
54 vmul.s32 d13, d14, d1[1]
73 FUNCTION(mix_chan_rvb): @ (int start, int count, int lv, int rv, int *rvb)
75 vmov.32 d14[1], r3 @ multipliers
76 load_varadr r2, SSumLR
78 load_varadr r0, ChanBuf
88 vmul.s32 d10, d14, d0[0]
89 vmul.s32 d11, d14, d0[1]
90 vmul.s32 d12, d14, d1[0]
91 vmul.s32 d13, d14, d1[1]
115 #elif defined(HAVE_ARMV5)
117 FUNCTION(mix_chan): @ (int start, int count, int lv, int rv)
118 stmfd sp!, {r4-r8,lr}
119 orr r3, r2, r3, lsl #16
120 lsl r3, #1 @ packed multipliers << 1
121 load_varadr r2, SSumLR
123 load_varadr r0, ChanBuf
130 lsl r4, #1 @ adjust for mul
132 smlawb r6, r4, r3, r6
133 smlawt r7, r4, r3, r7
134 smlawb r8, r5, r3, r8
135 smlawt lr, r5, r3, lr
138 stmia r2!, {r6-r8,lr}
140 ldmeqfd sp!, {r4-r8,pc}
144 ldmfd sp!, {r4-r8,pc}
147 FUNCTION(mix_chan_rvb): @ (int start, int count, int lv, int rv, int *rvb)
148 stmfd sp!, {r4-r8,lr}
149 orr lr, r2, r3, lsl #16
151 load_varadr r2, SSumLR
154 load_varadr r4, ChanBuf
155 add r2, r2, r0, lsl #3
156 add r3, r3, r0, lsl #3
157 add r0, r4, r0, lsl #2
163 smlawb r6, r4, lr, r6 @ supposedly takes single cycle?
164 smlawt r7, r4, lr, r7
165 smlawb r8, r4, lr, r8
166 smlawt r12,r4, lr, r12
171 ldmfd sp!, {r4-r8,pc}
175 @ vim:filetype=armasm