1 .macro push_v_regs 2 stp X8, X9, [sp, #-16]! 3 stp X10, X11, [sp, #-16]! 4 stp X12, X13, [sp, #-16]! 5 stp X14, X15, [sp, #-16]! 6 stp X20, X21, [sp, #-16]! 7 stp X26, X17, [sp, #-16]! 8 stp X27, X28, [sp, #-16]! 9 stp q2, q3, [sp, #-32]! 10 stp q0, q1, [sp, #-32]! 11 .endm 12 .macro pop_v_regs 13 ldp q0, q1, [sp], #32 14 ldp q2, q3, [sp], #32 15 ldp X27, X28, [sp], #16 16 ldp X26, X17, [sp], #16 17 ldp X20, X21, [sp], #16 18 ldp X14, X15, [sp], #16 19 ldp X12, X13, [sp], #16 20 ldp X10, X11, [sp], #16 21 ldp X8, X9, [sp], #16 22 .endm 23 24 .text 25 .p2align 2 26 .global ixheaacd_shiftrountine_with_rnd_eld 27 ixheaacd_shiftrountine_with_rnd_eld: 28 push_v_regs 29 30 ADD x12, x2, x3, LSL #1 31 MOV W9, #0x00008000 32 DUP V0.4s, w9 33 MOVI v3.4s, #9 34 MOV W27, #0x80000000 35 MOV W28, #0x7fffffff 36 MOV W26, #0 37 SUBS W3, W3, #1 38 BMI S_WITH_R_L6 39 40 S_WITH_R_L5: 41 LDR w5, [x1, x3, LSL #2] //i2 = qmfImag[j] 42 LDR w7, [x0, x3, LSL #2] //x2 = qmfReal[j] 43 LDR w14, [x0], #4 //x1 = *qmfReal 44 LDR w10, [x1], #4 //i1 = *qmfImag 45 46 ADD w6, w5, w7 //*qmfImag++ = add32(i2, x2) 47 MVN w6, w6 48 ADD w6, w6, #1 49 SUB w5, w7, w5 //qmfReal[j] = sub32(i2, x2) 50 ADD w7, w10, w14 //qmfImag[j] = add32(i1, x1) 51 MVN w7, w7 52 ADD w7, w7, #1 53 SUB w4, w14, w10 //*qmfReal++ = sub32(i1, x1) 54 55 56 57 MOV v1.s[0], W4 //QADD x4, x4, x9 58 MOV v1.s[1], W5 //QADD x4, x4, x9 59 MOV v1.s[2], W6 //QADD x4, x4, x9 60 MOV v1.s[3], W7 //QADD x4, x4, x9 61 lsl w14, w3, #1 62 63 SQSHL v1.4s, v1.4s, v3.4s 64 ADD X17, X2, X14 65 66 SQADD v2.4s, v1.4s, v0.4s 67 68 ST1 {v2.h}[1], [x2], #2 69 ST1 {v2.h}[3], [X17] 70 ADD X17, X12, X14 71 ST1 {v2.h}[7], [x17] //STRH w7, [x12, x14] 72 ST1 {v2.h}[5], [x12], #2 //STRH w6, [x12], #2 73 74 SUBS x3, x3, #2 75 76 BGE S_WITH_R_L5 77 S_WITH_R_L6: 78 pop_v_regs 79 ret 80
