416 lines
11 KiB
ArmAsm
416 lines
11 KiB
ArmAsm
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cPI3_8 EQU 0x30fbc54d
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cPI2_8 EQU 0x5a82799a
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cPI1_8 EQU 0x7641af3d
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AREA |.text|, CODE, READONLY, ALIGN=2
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THUMB
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REQUIRE8
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PRESERVE8
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mdct_butterfly_8 PROC
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add r9, r5, r1 ; x4 + x0
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sub r5, r5, r1 ; x4 - x0
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add r7, r6, r2 ; x5 + x1
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sub r6, r6, r2 ; x5 - x1
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add r8, r10, r3 ; x6 + x2
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sub r10, r10, r3 ; x6 - x2
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add r12, r11, r4 ; x7 + x3
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sub r11, r11, r4 ; x7 - x3
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add r1, r10, r6 ; y0 = (x6 - x2) + (x5 - x1)
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sub r2, r11, r5 ; y1 = (x7 - x3) - (x4 - x0)
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sub r3, r10, r6 ; y2 = (x6 - x2) - (x5 - x1)
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add r4, r11, r5 ; y3 = (x7 - x3) + (x4 - x0)
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sub r5, r8, r9 ; y4 = (x6 + x2) - (x4 + x0)
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sub r6, r12, r7 ; y5 = (x7 + x3) - (x5 + x1)
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add r10, r8, r9 ; y6 = (x6 + x2) + (x4 + x0)
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add r11, r12, r7 ; y7 = (x7 + x3) + (x5 + x1)
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stmia r0, {r1, r2, r3, r4, r5, r6, r10, r11}
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bx lr
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ENDP
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mdct_butterfly_16 PROC
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str lr, [sp, #-4]!
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add r1, r0, #8*4
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ldmia r0, {r2, r3, r4, r5}
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ldmia r1, {r6, r7, r8, r9}
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add r6, r6, r2 ; y8 = x8 + x0
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rsb r2, r6, r2, lsl #1 ; x0 - x8
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add r7, r7, r3 ; y9 = x9 + x1
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rsb r3, r7, r3, lsl #1 ; x1 - x9
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add r8, r8, r4 ; y10 = x10 + x2
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sub r11, r8, r4, lsl #1 ; x10 - x2
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add r9, r9, r5 ; y11 = x11 + x3
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rsb r10, r9, r5, lsl #1 ; x3 - x11
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stmia r1!, {r6, r7, r8, r9}
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add r2, r2, r3 ; (x0 - x8) + (x1 - x9)
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rsb r3, r2, r3, lsl #1 ; (x1 - x9) - (x0 - x8)
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ldr r12, =cPI2_8
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smull r8, r5, r12, r2
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smull r8, r6, r12, r3
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mov r5, r5, lsl #1
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mov r6, r6, lsl #1
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stmia r0!, {r5, r6, r10, r11}
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ldmia r0, {r2, r3, r4, r5}
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ldmia r1, {r6, r7, r8, r9}
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add r6, r6, r2 ; y12 = x12 + x4
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sub r2, r6, r2, lsl #1 ; x12 - x4
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add r7, r7, r3 ; y13 = x13 + x5
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sub r3, r7, r3, lsl #1 ; x13 - x5
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add r8, r8, r4 ; y10 = x14 + x6
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sub r10, r8, r4, lsl #1 ; x14 - x6
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add r9, r9, r5 ; y11 = x15 + x7
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sub r11, r9, r5, lsl #1 ; x15 - x7
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stmia r1, {r6, r7, r8, r9}
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sub r2, r2, r3 ; (x12 - x4) - (x13 - x5)
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add r3, r2, r3, lsl #1 ; (x12 - x4) + (x13 - x5)
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smull r8, r5, r12, r2
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smull r8, r6, r12, r3
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mov r5, r5, lsl #1
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mov r6, r6, lsl #1
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; no stmia here, r5, r6, r10, r11 are passed to mdct_butterfly_8
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sub r0, r0, #4*4
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ldmia r0, {r1, r2, r3, r4}
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bl mdct_butterfly_8
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add r0, r0, #8*4
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ldmia r0, {r1, r2, r3, r4, r5, r6, r10, r11}
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bl mdct_butterfly_8
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ldr pc, [sp], #4
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ENDP
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mdct_butterfly_32 PROC
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EXPORT mdct_butterfly_32
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stmdb sp!, {r4-r11, lr}
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add r1, r0, #16*4
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ldmia r0, {r2, r3, r4, r5}
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ldmia r1, {r6, r7, r8, r9}
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add r6, r6, r2 ; y16 = x16 + x0
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rsb r2, r6, r2, lsl #1 ; x0 - x16
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add r7, r7, r3 ; y17 = x17 + x1
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rsb r3, r7, r3, lsl #1 ; x1 - x17
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add r8, r8, r4 ; y18 = x18 + x2
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rsb r4, r8, r4, lsl #1 ; x2 - x18
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add r9, r9, r5 ; y19 = x19 + x3
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rsb r5, r9, r5, lsl #1 ; x3 - x19
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stmia r1!, {r6, r7, r8, r9}
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ldr r12, =cPI1_8
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ldr lr, =cPI3_8
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smull r10, r6, r12, r2
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rsb r2, r2, #0
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smlal r10, r6, lr, r3
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smull r10, r7, r12, r3
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smlal r10, r7, lr, r2
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mov r6, r6, lsl #1
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mov r7, r7, lsl #1
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add r4, r4, r5 ; (x3 - x19) + (x2 - x18)
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rsb r5, r4, r5, lsl #1 ; (x3 - x19) - (x2 - x18)
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ldr r11, =cPI2_8
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smull r10, r8, r4, r11
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smull r10, r9, r5, r11
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mov r8, r8, lsl #1
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mov r9, r9, lsl #1
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stmia r0!, {r6, r7, r8, r9}
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ldmia r0, {r2, r3, r4, r5}
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ldmia r1, {r6, r7, r8, r9}
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add r6, r6, r2 ; y20 = x20 + x4
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rsb r2, r6, r2, lsl #1 ; x4 - x20
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add r7, r7, r3 ; y21 = x21 + x5
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rsb r3, r7, r3, lsl #1 ; x5 - x21
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add r8, r8, r4 ; y22 = x22 + x6
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sub r4, r8, r4, lsl #1 ; x22 - x6
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add r9, r9, r5 ; y23 = x23 + x7
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rsb r5, r9, r5, lsl #1 ; x7 - x23
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stmia r1!, {r6, r7, r8, r9}
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smull r10, r6, lr, r2
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rsb r2, r2, #0
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smlal r10, r6, r12, r3
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smull r10, r7, lr, r3
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smlal r10, r7, r12, r2
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mov r6, r6, lsl #1
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mov r7, r7, lsl #1
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mov r8, r5
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mov r9, r4
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stmia r0!, {r6, r7, r8, r9}
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ldmia r0, {r2, r3, r4, r5}
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ldmia r1, {r6, r7, r8, r9}
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add r6, r6, r2 ; y24 = x24 + x8
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sub r2, r6, r2, lsl #1 ; x24 - x8
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add r7, r7, r3 ; y25 = x25 + x9
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sub r3, r7, r3, lsl #1 ; x25 - x9
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add r8, r8, r4 ; y26 = x26 + x10
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sub r4, r8, r4, lsl #1 ; x26 - x10
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add r9, r9, r5 ; y27 = x27 + x11
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sub r5, r9, r5, lsl #1 ; x27 - x11
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stmia r1!, {r6, r7, r8, r9}
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smull r10, r7, lr, r3
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rsb r3, r3, #0
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smlal r10, r7, r12, r2
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smull r10, r6, r12, r3
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smlal r10, r6, lr, r2
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mov r6, r6, lsl #1
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mov r7, r7, lsl #1
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sub r4, r4, r5 ; (x26 - x10) - (x27 - x11)
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add r5, r4, r5, lsl #1 ; (x26 - x10) + (x27 - x11)
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ldr r11, =cPI2_8
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smull r10, r8, r11, r4
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smull r10, r9, r11, r5
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mov r8, r8, lsl #1
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mov r9, r9, lsl #1
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stmia r0!, {r6, r7, r8, r9}
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ldmia r0, {r2, r3, r4, r5}
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ldmia r1, {r6, r7, r8, r9}
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add r6, r6, r2 ; y28 = x28 + x12
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sub r2, r6, r2, lsl #1 ; x28 - x12
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add r7, r7, r3 ; y29 = x29 + x13
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sub r3, r7, r3, lsl #1 ; x29 - x13
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add r8, r8, r4 ; y30 = x30 + x14
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sub r4, r8, r4, lsl #1 ; x30 - x14
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add r9, r9, r5 ; y31 = x31 + x15
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sub r5, r9, r5, lsl #1 ; x31 - x15
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stmia r1, {r6, r7, r8, r9}
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smull r10, r7, r12, r3
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rsb r3, r3, #0
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smlal r10, r7, lr, r2
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smull r10, r6, lr, r3
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smlal r10, r6, r12, r2
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mov r6, r6, lsl #1
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mov r7, r7, lsl #1
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mov r8, r4
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mov r9, r5
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stmia r0, {r6, r7, r8, r9}
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sub r0, r0, #12*4
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str r0, [sp, #-4]!
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bl mdct_butterfly_16
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ldr r0, [sp], #4
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add r0, r0, #16*4
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bl mdct_butterfly_16
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ldmia sp!, {r4-r11, pc}
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ENDP
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; mdct_butterfly_generic_loop(x1, x2, T0, step, Ttop)
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mdct_butterfly_generic_loop PROC
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EXPORT mdct_butterfly_generic_loop
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stmdb sp!, {r4-r11, lr}
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str r2, [sp, #-4]
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ldr r4, [sp, #36]
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label_1
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ldmdb r0, {r6, r7, r8, r9}
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ldmdb r1, {r10, r11, r12, r14}
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add r6, r6, r10
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sub r10, r6, r10, lsl #1
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add r7, r7, r11
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rsb r11, r7, r11, lsl #1
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add r8, r8, r12
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sub r12, r8, r12, lsl #1
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add r9, r9, r14
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rsb r14, r9, r14, lsl #1
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stmdb r0!, {r6, r7, r8, r9}
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ldmia r2, {r6, r7}
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smull r5, r8, r6, r14
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rsb r14, r14, #0
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smlal r5, r8, r7, r12
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smull r5, r9, r6, r12
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smlal r5, r9, r7, r14
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mov r8, r8, lsl #1
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mov r9, r9, lsl #1
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stmdb r1!, {r8, r9}
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add r2, r2, r3, lsl #2
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ldmia r2, {r6, r7}
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smull r5, r8, r6, r11
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rsb r11, r11, #0
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smlal r5, r8, r7, r10
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smull r5, r9, r6, r10
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smlal r5, r9, r7, r11
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mov r8, r8, lsl #1
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mov r9, r9, lsl #1
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stmdb r1!, {r8, r9}
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add r2, r2, r3, lsl #2
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cmp r2, r4
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blo label_1
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ldr r4, [sp, #-4]
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label_2
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ldmdb r0, {r6, r7, r8, r9}
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ldmdb r1, {r10, r11, r12, r14}
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add r6, r6, r10
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sub r10, r6, r10, lsl #1
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add r7, r7, r11
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sub r11, r7, r11, lsl #1
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add r8, r8, r12
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sub r12, r8, r12, lsl #1
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add r9, r9, r14
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sub r14, r9, r14, lsl #1
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stmdb r0!, {r6, r7, r8, r9}
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ldmia r2, {r6, r7}
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smull r5, r9, r6, r14
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rsb r14, r14, #0
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smlal r5, r9, r7, r12
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smull r5, r8, r6, r12
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smlal r5, r8, r7, r14
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mov r8, r8, lsl #1
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mov r9, r9, lsl #1
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stmdb r1!, {r8, r9}
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sub r2, r2, r3, lsl #2
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ldmia r2, {r6, r7}
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smull r5, r9, r6, r11
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rsb r11, r11, #0
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smlal r5, r9, r7, r10
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smull r5, r8, r6, r10
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smlal r5, r8, r7, r11
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mov r8, r8, lsl #1
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mov r9, r9, lsl #1
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stmdb r1!, {r8, r9}
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sub r2, r2, r3, lsl #2
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|
|
cmp r2, r4
|
||
|
|
bhi label_2
|
||
|
|
|
||
|
|
ldr r4, [sp, #36]
|
||
|
|
|
||
|
|
label_3
|
||
|
|
ldmdb r0, {r6, r7, r8, r9}
|
||
|
|
ldmdb r1, {r10, r11, r12, r14}
|
||
|
|
|
||
|
|
add r6, r6, r10
|
||
|
|
rsb r10, r6, r10, lsl #1
|
||
|
|
add r7, r7, r11
|
||
|
|
rsb r11, r7, r11, lsl #1
|
||
|
|
add r8, r8, r12
|
||
|
|
rsb r12, r8, r12, lsl #1
|
||
|
|
add r9, r9, r14
|
||
|
|
rsb r14, r9, r14, lsl #1
|
||
|
|
|
||
|
|
stmdb r0!, {r6, r7, r8, r9}
|
||
|
|
|
||
|
|
ldmia r2, {r6, r7}
|
||
|
|
smull r5, r8, r6, r12
|
||
|
|
rsb r12, r12, #0
|
||
|
|
smlal r5, r8, r7, r14
|
||
|
|
smull r5, r9, r6, r14
|
||
|
|
smlal r5, r9, r7, r12
|
||
|
|
|
||
|
|
mov r8, r8, lsl #1
|
||
|
|
mov r9, r9, lsl #1
|
||
|
|
stmdb r1!, {r8, r9}
|
||
|
|
add r2, r2, r3, lsl #2
|
||
|
|
|
||
|
|
ldmia r2, {r6, r7}
|
||
|
|
smull r5, r8, r6, r10
|
||
|
|
rsb r10, r10, #0
|
||
|
|
smlal r5, r8, r7, r11
|
||
|
|
smull r5, r9, r6, r11
|
||
|
|
smlal r5, r9, r7, r10
|
||
|
|
|
||
|
|
mov r8, r8, lsl #1
|
||
|
|
mov r9, r9, lsl #1
|
||
|
|
stmdb r1!, {r8, r9}
|
||
|
|
add r2, r2, r3, lsl #2
|
||
|
|
|
||
|
|
cmp r2, r4
|
||
|
|
blo label_3
|
||
|
|
|
||
|
|
ldr r4, [sp, #-4]
|
||
|
|
|
||
|
|
label_4
|
||
|
|
ldmdb r0, {r6, r7, r8, r9}
|
||
|
|
ldmdb r1, {r10, r11, r12, r14}
|
||
|
|
|
||
|
|
add r6, r6, r10
|
||
|
|
sub r10, r6, r10, lsl #1
|
||
|
|
add r7, r7, r11
|
||
|
|
rsb r11, r7, r11, lsl #1
|
||
|
|
add r8, r8, r12
|
||
|
|
sub r12, r8, r12, lsl #1
|
||
|
|
add r9, r9, r14
|
||
|
|
rsb r14, r9, r14, lsl #1
|
||
|
|
|
||
|
|
stmdb r0!, {r6, r7, r8, r9}
|
||
|
|
|
||
|
|
ldmia r2, {r6, r7}
|
||
|
|
smull r5, r9, r6, r12
|
||
|
|
smlal r5, r9, r7, r14
|
||
|
|
rsb r12, r12, #0
|
||
|
|
smull r5, r8, r6, r14
|
||
|
|
smlal r5, r8, r7, r12
|
||
|
|
|
||
|
|
mov r8, r8, lsl #1
|
||
|
|
mov r9, r9, lsl #1
|
||
|
|
stmdb r1!, {r8, r9}
|
||
|
|
sub r2, r2, r3, lsl #2
|
||
|
|
|
||
|
|
ldmia r2, {r6, r7}
|
||
|
|
smull r5, r9, r6, r10
|
||
|
|
rsb r10, r10, #0
|
||
|
|
smlal r5, r9, r7, r11
|
||
|
|
smull r5, r8, r6, r11
|
||
|
|
smlal r5, r8, r7, r10
|
||
|
|
|
||
|
|
mov r8, r8, lsl #1
|
||
|
|
mov r9, r9, lsl #1
|
||
|
|
stmdb r1!, {r8, r9}
|
||
|
|
sub r2, r2, r3, lsl #2
|
||
|
|
|
||
|
|
cmp r2, r4
|
||
|
|
bhi label_4
|
||
|
|
|
||
|
|
ldmia sp!, {r4-r11, pc}
|
||
|
|
|
||
|
|
ENDP
|
||
|
|
|
||
|
|
END
|