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
43 load_varadr r0, ChanBuf
44 load_varadr r2, SSumLR
50 vmul.s32 d10, d14, d0[0]
51 vmul.s32 d11, d14, d0[1]
52 vmul.s32 d12, d14, d1[0]
53 vmul.s32 d13, d14, d1[1]
72 FUNCTION(mix_chan_rvb): @ (int start, int count, int lv, int rv, int *rvb)
74 vmov.32 d14[1], r3 @ multipliers
76 load_varadr r0, ChanBuf
78 load_varadr r2, SSumLR
86 vmul.s32 d10, d14, d0[0]
87 vmul.s32 d11, d14, d0[1]
88 vmul.s32 d12, d14, d1[0]
89 vmul.s32 d13, d14, d1[1]
113 #elif defined(HAVE_ARMV5)
115 FUNCTION(mix_chan): @ (int start, int count, int lv, int rv)
116 stmfd sp!, {r4-r8,lr}
117 orr r3, r2, r3, lsl #16
118 lsl r3, #1 @ packed multipliers << 1
120 load_varadr r0, ChanBuf
121 load_varadr r2, SSumLR
127 lsl r4, #1 @ adjust for mul
129 smlawb r6, r4, r3, r6
130 smlawt r7, r4, r3, r7
131 smlawb r8, r5, r3, r8
132 smlawt lr, r5, r3, lr
135 stmia r2!, {r6-r8,lr}
137 ldmeqfd sp!, {r4-r8,pc}
141 ldmfd sp!, {r4-r8,pc}
144 FUNCTION(mix_chan_rvb): @ (int start, int count, int lv, int rv, int *rvb)
145 stmfd sp!, {r4-r8,lr}
146 orr lr, r2, r3, lsl #16
149 load_varadr r2, SSumLR
150 load_varadr r4, ChanBuf
151 add r2, r2, r0, lsl #3
152 add r3, r3, r0, lsl #3
153 add r0, r4, r0, lsl #2
159 smlawb r6, r4, lr, r6 @ supposedly takes single cycle?
160 smlawt r7, r4, lr, r7
161 smlawb r8, r4, lr, r8
162 smlawt r12,r4, lr, r12
167 ldmfd sp!, {r4-r8,pc}
171 @ vim:filetype=armasm