X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=plugins%2Fdfsound%2Farm_utils.S;fp=plugins%2Fdfsound%2Farm_utils.S;h=22e584432fbf93b8681cde9b7190d52af0d52eae;hb=c67af2ac1a8305c7377c7dda844257c5bc1545e3;hp=0000000000000000000000000000000000000000;hpb=61bc6d40b4f6f846a0ae1b73ceecdca893c14df4;p=pcsx_rearmed.git

diff --git a/plugins/dfsound/arm_utils.S b/plugins/dfsound/arm_utils.S
new file mode 100644
index 00000000..22e58443
--- /dev/null
+++ b/plugins/dfsound/arm_utils.S
@@ -0,0 +1,164 @@
+/*
+ * (C) Gražvydas "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
+
+.macro load_varadr reg var
+#if defined(__ARM_ARCH_7A__) && !defined(__PIC__)
+	movw	\reg, #:lower16:\var
+	movt	\reg, #:upper16:\var
+#else
+	ldr	\reg, =\var
+#endif
+.endm
+
+#ifdef __ARM_NEON__
+
+.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
+    load_varadr r0, ChanBuf
+    load_varadr r2, 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, #-1
+    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
+    load_varadr r0, ChanBuf
+    load_varadr r3, sRVBStart
+    load_varadr r2, 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, #-1
+    vstmiage    r2!, {d4}
+    vstmiage    r3!, {d8}
+    bx          lr
+
+#else
+
+.global mix_chan @ (int start, int count, int lv, int rv)
+mix_chan:
+    stmfd       sp!, {r4-r8,lr}
+    orr         r3, r2, r3, lsl #16
+    lsl         r3, #1                 @ packed multipliers << 1
+    mov         r12, r0
+    load_varadr r0, ChanBuf
+    load_varadr r2, SSumLR
+    add         r0, r12, lsl #2
+    add         r2, r12, lsl #3
+0:
+    ldmia       r0!, {r4,r5}
+    ldmia       r2, {r6-r8,lr}
+    lsl         r4, #1                 @ adjust for mul
+    lsl         r5, #1
+    smlawb      r6, r4, r3, r6
+    smlawt      r7, r4, r3, r7
+    smlawb      r8, r5, r3, r8
+    smlawt      lr, r5, r3, lr
+    subs        r1, #2
+    blt         mc_finish
+    stmia       r2!, {r6-r8,lr}
+    bgt         0b
+    ldmeqfd     sp!, {r4-r8,pc}
+
+mc_finish:
+    stmia       r2!, {r6,r7}
+    ldmfd       sp!, {r4-r8,pc}
+
+
+.global mix_chan_rvb @ (int start, int count, int lv, int rv)
+mix_chan_rvb:
+    stmfd       sp!, {r4-r8,lr}
+    orr         lr, r2, r3, lsl #16
+    lsl         lr, #1
+    load_varadr r3, sRVBStart
+    load_varadr r2, SSumLR
+    load_varadr r4, ChanBuf
+    ldr         r3, [r3]
+    add         r2, r2, r0, lsl #3
+    add         r3, r3, r0, lsl #3
+    add         r0, r4, r0, lsl #2
+0:
+    ldr         r4, [r0], #4
+    ldmia       r2, {r6,r7}
+    ldmia       r3, {r8,r12}
+    lsl         r4, #1
+    smlawb      r6, r4, lr, r6         @ supposedly takes single cycle?
+    smlawt      r7, r4, lr, r7
+    smlawb      r8, r4, lr, r8
+    smlawt      r12,r4, lr, r12
+    subs        r1, #1
+    stmia       r2!, {r6,r7}
+    stmia       r3!, {r8,r12}
+    bgt         0b
+    ldmfd       sp!, {r4-r8,pc}
+
+#endif
+
+@ vim:filetype=armasm