831 lines
15 KiB
ArmAsm
831 lines
15 KiB
ArmAsm
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// Code generated by command: go run gen.go -out ../decompress_amd64.s -pkg=huff0. DO NOT EDIT.
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//go:build amd64 && !appengine && !noasm && gc
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// func decompress4x_main_loop_amd64(ctx *decompress4xContext)
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TEXT ·decompress4x_main_loop_amd64(SB), $0-8
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// Preload values
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MOVQ ctx+0(FP), AX
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MOVBQZX 8(AX), DI
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MOVQ 16(AX), BX
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MOVQ 48(AX), SI
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MOVQ 24(AX), R8
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MOVQ 32(AX), R9
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MOVQ (AX), R10
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// Main loop
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main_loop:
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XORL DX, DX
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CMPQ BX, SI
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SETGE DL
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// br0.fillFast32()
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MOVQ 32(R10), R11
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MOVBQZX 40(R10), R12
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CMPQ R12, $0x20
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JBE skip_fill0
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MOVQ 24(R10), AX
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SUBQ $0x20, R12
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SUBQ $0x04, AX
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MOVQ (R10), R13
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// b.value |= uint64(low) << (b.bitsRead & 63)
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MOVL (AX)(R13*1), R13
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MOVQ R12, CX
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SHLQ CL, R13
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MOVQ AX, 24(R10)
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ORQ R13, R11
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// exhausted += (br0.off < 4)
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CMPQ AX, $0x04
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ADCB $+0, DL
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skip_fill0:
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// val0 := br0.peekTopBits(peekBits)
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MOVQ R11, R13
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MOVQ DI, CX
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SHRQ CL, R13
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// v0 := table[val0&mask]
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MOVW (R9)(R13*2), CX
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// br0.advance(uint8(v0.entry)
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MOVB CH, AL
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SHLQ CL, R11
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ADDB CL, R12
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// val1 := br0.peekTopBits(peekBits)
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MOVQ DI, CX
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MOVQ R11, R13
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SHRQ CL, R13
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// v1 := table[val1&mask]
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MOVW (R9)(R13*2), CX
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// br0.advance(uint8(v1.entry))
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MOVB CH, AH
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SHLQ CL, R11
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ADDB CL, R12
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// these two writes get coalesced
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// out[id * dstEvery + 0] = uint8(v0.entry >> 8)
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// out[id * dstEvery + 1] = uint8(v1.entry >> 8)
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MOVW AX, (BX)
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// update the bitreader structure
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MOVQ R11, 32(R10)
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MOVB R12, 40(R10)
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// br1.fillFast32()
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MOVQ 80(R10), R11
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MOVBQZX 88(R10), R12
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CMPQ R12, $0x20
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JBE skip_fill1
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MOVQ 72(R10), AX
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SUBQ $0x20, R12
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SUBQ $0x04, AX
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MOVQ 48(R10), R13
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// b.value |= uint64(low) << (b.bitsRead & 63)
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MOVL (AX)(R13*1), R13
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MOVQ R12, CX
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SHLQ CL, R13
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MOVQ AX, 72(R10)
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ORQ R13, R11
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// exhausted += (br1.off < 4)
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CMPQ AX, $0x04
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ADCB $+0, DL
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skip_fill1:
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// val0 := br1.peekTopBits(peekBits)
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MOVQ R11, R13
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MOVQ DI, CX
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SHRQ CL, R13
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// v0 := table[val0&mask]
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MOVW (R9)(R13*2), CX
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// br1.advance(uint8(v0.entry)
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MOVB CH, AL
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SHLQ CL, R11
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ADDB CL, R12
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// val1 := br1.peekTopBits(peekBits)
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MOVQ DI, CX
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MOVQ R11, R13
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SHRQ CL, R13
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// v1 := table[val1&mask]
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MOVW (R9)(R13*2), CX
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// br1.advance(uint8(v1.entry))
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MOVB CH, AH
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SHLQ CL, R11
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ADDB CL, R12
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// these two writes get coalesced
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// out[id * dstEvery + 0] = uint8(v0.entry >> 8)
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// out[id * dstEvery + 1] = uint8(v1.entry >> 8)
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MOVW AX, (BX)(R8*1)
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// update the bitreader structure
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MOVQ R11, 80(R10)
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MOVB R12, 88(R10)
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// br2.fillFast32()
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MOVQ 128(R10), R11
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MOVBQZX 136(R10), R12
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CMPQ R12, $0x20
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JBE skip_fill2
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MOVQ 120(R10), AX
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SUBQ $0x20, R12
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SUBQ $0x04, AX
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MOVQ 96(R10), R13
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// b.value |= uint64(low) << (b.bitsRead & 63)
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MOVL (AX)(R13*1), R13
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MOVQ R12, CX
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SHLQ CL, R13
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MOVQ AX, 120(R10)
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ORQ R13, R11
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// exhausted += (br2.off < 4)
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CMPQ AX, $0x04
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ADCB $+0, DL
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skip_fill2:
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// val0 := br2.peekTopBits(peekBits)
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MOVQ R11, R13
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MOVQ DI, CX
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SHRQ CL, R13
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// v0 := table[val0&mask]
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MOVW (R9)(R13*2), CX
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// br2.advance(uint8(v0.entry)
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MOVB CH, AL
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SHLQ CL, R11
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ADDB CL, R12
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// val1 := br2.peekTopBits(peekBits)
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MOVQ DI, CX
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MOVQ R11, R13
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SHRQ CL, R13
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// v1 := table[val1&mask]
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MOVW (R9)(R13*2), CX
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// br2.advance(uint8(v1.entry))
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MOVB CH, AH
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SHLQ CL, R11
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ADDB CL, R12
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// these two writes get coalesced
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// out[id * dstEvery + 0] = uint8(v0.entry >> 8)
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// out[id * dstEvery + 1] = uint8(v1.entry >> 8)
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MOVW AX, (BX)(R8*2)
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// update the bitreader structure
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MOVQ R11, 128(R10)
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MOVB R12, 136(R10)
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// br3.fillFast32()
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MOVQ 176(R10), R11
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MOVBQZX 184(R10), R12
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CMPQ R12, $0x20
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JBE skip_fill3
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MOVQ 168(R10), AX
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SUBQ $0x20, R12
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SUBQ $0x04, AX
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MOVQ 144(R10), R13
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// b.value |= uint64(low) << (b.bitsRead & 63)
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MOVL (AX)(R13*1), R13
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MOVQ R12, CX
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SHLQ CL, R13
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MOVQ AX, 168(R10)
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ORQ R13, R11
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// exhausted += (br3.off < 4)
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CMPQ AX, $0x04
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ADCB $+0, DL
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skip_fill3:
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// val0 := br3.peekTopBits(peekBits)
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MOVQ R11, R13
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MOVQ DI, CX
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SHRQ CL, R13
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// v0 := table[val0&mask]
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MOVW (R9)(R13*2), CX
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// br3.advance(uint8(v0.entry)
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MOVB CH, AL
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SHLQ CL, R11
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ADDB CL, R12
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// val1 := br3.peekTopBits(peekBits)
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MOVQ DI, CX
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MOVQ R11, R13
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SHRQ CL, R13
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// v1 := table[val1&mask]
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MOVW (R9)(R13*2), CX
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// br3.advance(uint8(v1.entry))
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MOVB CH, AH
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SHLQ CL, R11
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ADDB CL, R12
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// these two writes get coalesced
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// out[id * dstEvery + 0] = uint8(v0.entry >> 8)
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// out[id * dstEvery + 1] = uint8(v1.entry >> 8)
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LEAQ (R8)(R8*2), CX
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MOVW AX, (BX)(CX*1)
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// update the bitreader structure
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MOVQ R11, 176(R10)
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MOVB R12, 184(R10)
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ADDQ $0x02, BX
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TESTB DL, DL
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JZ main_loop
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MOVQ ctx+0(FP), AX
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SUBQ 16(AX), BX
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SHLQ $0x02, BX
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MOVQ BX, 40(AX)
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RET
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// func decompress4x_8b_main_loop_amd64(ctx *decompress4xContext)
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TEXT ·decompress4x_8b_main_loop_amd64(SB), $0-8
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// Preload values
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MOVQ ctx+0(FP), CX
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MOVBQZX 8(CX), DI
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MOVQ 16(CX), BX
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MOVQ 48(CX), SI
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MOVQ 24(CX), R8
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MOVQ 32(CX), R9
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MOVQ (CX), R10
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// Main loop
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main_loop:
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XORL DX, DX
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CMPQ BX, SI
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SETGE DL
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// br0.fillFast32()
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MOVQ 32(R10), R11
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MOVBQZX 40(R10), R12
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CMPQ R12, $0x20
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JBE skip_fill0
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MOVQ 24(R10), R13
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SUBQ $0x20, R12
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SUBQ $0x04, R13
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MOVQ (R10), R14
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// b.value |= uint64(low) << (b.bitsRead & 63)
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MOVL (R13)(R14*1), R14
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MOVQ R12, CX
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SHLQ CL, R14
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MOVQ R13, 24(R10)
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ORQ R14, R11
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// exhausted += (br0.off < 4)
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CMPQ R13, $0x04
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ADCB $+0, DL
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skip_fill0:
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// val0 := br0.peekTopBits(peekBits)
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MOVQ R11, R13
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MOVQ DI, CX
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SHRQ CL, R13
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// v0 := table[val0&mask]
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MOVW (R9)(R13*2), CX
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// br0.advance(uint8(v0.entry)
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MOVB CH, AL
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SHLQ CL, R11
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ADDB CL, R12
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// val1 := br0.peekTopBits(peekBits)
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MOVQ R11, R13
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MOVQ DI, CX
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SHRQ CL, R13
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// v1 := table[val0&mask]
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MOVW (R9)(R13*2), CX
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// br0.advance(uint8(v1.entry)
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MOVB CH, AH
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SHLQ CL, R11
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ADDB CL, R12
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BSWAPL AX
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// val2 := br0.peekTopBits(peekBits)
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MOVQ R11, R13
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MOVQ DI, CX
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SHRQ CL, R13
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// v2 := table[val0&mask]
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MOVW (R9)(R13*2), CX
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// br0.advance(uint8(v2.entry)
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MOVB CH, AH
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SHLQ CL, R11
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ADDB CL, R12
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// val3 := br0.peekTopBits(peekBits)
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MOVQ R11, R13
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MOVQ DI, CX
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SHRQ CL, R13
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// v3 := table[val0&mask]
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MOVW (R9)(R13*2), CX
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// br0.advance(uint8(v3.entry)
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MOVB CH, AL
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SHLQ CL, R11
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ADDB CL, R12
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BSWAPL AX
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// these four writes get coalesced
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// out[id * dstEvery + 0] = uint8(v0.entry >> 8)
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// out[id * dstEvery + 1] = uint8(v1.entry >> 8)
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// out[id * dstEvery + 3] = uint8(v2.entry >> 8)
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// out[id * dstEvery + 4] = uint8(v3.entry >> 8)
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MOVL AX, (BX)
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// update the bitreader structure
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MOVQ R11, 32(R10)
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MOVB R12, 40(R10)
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// br1.fillFast32()
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MOVQ 80(R10), R11
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MOVBQZX 88(R10), R12
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CMPQ R12, $0x20
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JBE skip_fill1
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MOVQ 72(R10), R13
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SUBQ $0x20, R12
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SUBQ $0x04, R13
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MOVQ 48(R10), R14
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// b.value |= uint64(low) << (b.bitsRead & 63)
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MOVL (R13)(R14*1), R14
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MOVQ R12, CX
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SHLQ CL, R14
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MOVQ R13, 72(R10)
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ORQ R14, R11
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// exhausted += (br1.off < 4)
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CMPQ R13, $0x04
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ADCB $+0, DL
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||
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skip_fill1:
|
||
|
|
// val0 := br1.peekTopBits(peekBits)
|
||
|
|
MOVQ R11, R13
|
||
|
|
MOVQ DI, CX
|
||
|
|
SHRQ CL, R13
|
||
|
|
|
||
|
|
// v0 := table[val0&mask]
|
||
|
|
MOVW (R9)(R13*2), CX
|
||
|
|
|
||
|
|
// br1.advance(uint8(v0.entry)
|
||
|
|
MOVB CH, AL
|
||
|
|
SHLQ CL, R11
|
||
|
|
ADDB CL, R12
|
||
|
|
|
||
|
|
// val1 := br1.peekTopBits(peekBits)
|
||
|
|
MOVQ R11, R13
|
||
|
|
MOVQ DI, CX
|
||
|
|
SHRQ CL, R13
|
||
|
|
|
||
|
|
// v1 := table[val0&mask]
|
||
|
|
MOVW (R9)(R13*2), CX
|
||
|
|
|
||
|
|
// br1.advance(uint8(v1.entry)
|
||
|
|
MOVB CH, AH
|
||
|
|
SHLQ CL, R11
|
||
|
|
ADDB CL, R12
|
||
|
|
BSWAPL AX
|
||
|
|
|
||
|
|
// val2 := br1.peekTopBits(peekBits)
|
||
|
|
MOVQ R11, R13
|
||
|
|
MOVQ DI, CX
|
||
|
|
SHRQ CL, R13
|
||
|
|
|
||
|
|
// v2 := table[val0&mask]
|
||
|
|
MOVW (R9)(R13*2), CX
|
||
|
|
|
||
|
|
// br1.advance(uint8(v2.entry)
|
||
|
|
MOVB CH, AH
|
||
|
|
SHLQ CL, R11
|
||
|
|
ADDB CL, R12
|
||
|
|
|
||
|
|
// val3 := br1.peekTopBits(peekBits)
|
||
|
|
MOVQ R11, R13
|
||
|
|
MOVQ DI, CX
|
||
|
|
SHRQ CL, R13
|
||
|
|
|
||
|
|
// v3 := table[val0&mask]
|
||
|
|
MOVW (R9)(R13*2), CX
|
||
|
|
|
||
|
|
// br1.advance(uint8(v3.entry)
|
||
|
|
MOVB CH, AL
|
||
|
|
SHLQ CL, R11
|
||
|
|
ADDB CL, R12
|
||
|
|
BSWAPL AX
|
||
|
|
|
||
|
|
// these four writes get coalesced
|
||
|
|
// out[id * dstEvery + 0] = uint8(v0.entry >> 8)
|
||
|
|
// out[id * dstEvery + 1] = uint8(v1.entry >> 8)
|
||
|
|
// out[id * dstEvery + 3] = uint8(v2.entry >> 8)
|
||
|
|
// out[id * dstEvery + 4] = uint8(v3.entry >> 8)
|
||
|
|
MOVL AX, (BX)(R8*1)
|
||
|
|
|
||
|
|
// update the bitreader structure
|
||
|
|
MOVQ R11, 80(R10)
|
||
|
|
MOVB R12, 88(R10)
|
||
|
|
|
||
|
|
// br2.fillFast32()
|
||
|
|
MOVQ 128(R10), R11
|
||
|
|
MOVBQZX 136(R10), R12
|
||
|
|
CMPQ R12, $0x20
|
||
|
|
JBE skip_fill2
|
||
|
|
MOVQ 120(R10), R13
|
||
|
|
SUBQ $0x20, R12
|
||
|
|
SUBQ $0x04, R13
|
||
|
|
MOVQ 96(R10), R14
|
||
|
|
|
||
|
|
// b.value |= uint64(low) << (b.bitsRead & 63)
|
||
|
|
MOVL (R13)(R14*1), R14
|
||
|
|
MOVQ R12, CX
|
||
|
|
SHLQ CL, R14
|
||
|
|
MOVQ R13, 120(R10)
|
||
|
|
ORQ R14, R11
|
||
|
|
|
||
|
|
// exhausted += (br2.off < 4)
|
||
|
|
CMPQ R13, $0x04
|
||
|
|
ADCB $+0, DL
|
||
|
|
|
||
|
|
skip_fill2:
|
||
|
|
// val0 := br2.peekTopBits(peekBits)
|
||
|
|
MOVQ R11, R13
|
||
|
|
MOVQ DI, CX
|
||
|
|
SHRQ CL, R13
|
||
|
|
|
||
|
|
// v0 := table[val0&mask]
|
||
|
|
MOVW (R9)(R13*2), CX
|
||
|
|
|
||
|
|
// br2.advance(uint8(v0.entry)
|
||
|
|
MOVB CH, AL
|
||
|
|
SHLQ CL, R11
|
||
|
|
ADDB CL, R12
|
||
|
|
|
||
|
|
// val1 := br2.peekTopBits(peekBits)
|
||
|
|
MOVQ R11, R13
|
||
|
|
MOVQ DI, CX
|
||
|
|
SHRQ CL, R13
|
||
|
|
|
||
|
|
// v1 := table[val0&mask]
|
||
|
|
MOVW (R9)(R13*2), CX
|
||
|
|
|
||
|
|
// br2.advance(uint8(v1.entry)
|
||
|
|
MOVB CH, AH
|
||
|
|
SHLQ CL, R11
|
||
|
|
ADDB CL, R12
|
||
|
|
BSWAPL AX
|
||
|
|
|
||
|
|
// val2 := br2.peekTopBits(peekBits)
|
||
|
|
MOVQ R11, R13
|
||
|
|
MOVQ DI, CX
|
||
|
|
SHRQ CL, R13
|
||
|
|
|
||
|
|
// v2 := table[val0&mask]
|
||
|
|
MOVW (R9)(R13*2), CX
|
||
|
|
|
||
|
|
// br2.advance(uint8(v2.entry)
|
||
|
|
MOVB CH, AH
|
||
|
|
SHLQ CL, R11
|
||
|
|
ADDB CL, R12
|
||
|
|
|
||
|
|
// val3 := br2.peekTopBits(peekBits)
|
||
|
|
MOVQ R11, R13
|
||
|
|
MOVQ DI, CX
|
||
|
|
SHRQ CL, R13
|
||
|
|
|
||
|
|
// v3 := table[val0&mask]
|
||
|
|
MOVW (R9)(R13*2), CX
|
||
|
|
|
||
|
|
// br2.advance(uint8(v3.entry)
|
||
|
|
MOVB CH, AL
|
||
|
|
SHLQ CL, R11
|
||
|
|
ADDB CL, R12
|
||
|
|
BSWAPL AX
|
||
|
|
|
||
|
|
// these four writes get coalesced
|
||
|
|
// out[id * dstEvery + 0] = uint8(v0.entry >> 8)
|
||
|
|
// out[id * dstEvery + 1] = uint8(v1.entry >> 8)
|
||
|
|
// out[id * dstEvery + 3] = uint8(v2.entry >> 8)
|
||
|
|
// out[id * dstEvery + 4] = uint8(v3.entry >> 8)
|
||
|
|
MOVL AX, (BX)(R8*2)
|
||
|
|
|
||
|
|
// update the bitreader structure
|
||
|
|
MOVQ R11, 128(R10)
|
||
|
|
MOVB R12, 136(R10)
|
||
|
|
|
||
|
|
// br3.fillFast32()
|
||
|
|
MOVQ 176(R10), R11
|
||
|
|
MOVBQZX 184(R10), R12
|
||
|
|
CMPQ R12, $0x20
|
||
|
|
JBE skip_fill3
|
||
|
|
MOVQ 168(R10), R13
|
||
|
|
SUBQ $0x20, R12
|
||
|
|
SUBQ $0x04, R13
|
||
|
|
MOVQ 144(R10), R14
|
||
|
|
|
||
|
|
// b.value |= uint64(low) << (b.bitsRead & 63)
|
||
|
|
MOVL (R13)(R14*1), R14
|
||
|
|
MOVQ R12, CX
|
||
|
|
SHLQ CL, R14
|
||
|
|
MOVQ R13, 168(R10)
|
||
|
|
ORQ R14, R11
|
||
|
|
|
||
|
|
// exhausted += (br3.off < 4)
|
||
|
|
CMPQ R13, $0x04
|
||
|
|
ADCB $+0, DL
|
||
|
|
|
||
|
|
skip_fill3:
|
||
|
|
// val0 := br3.peekTopBits(peekBits)
|
||
|
|
MOVQ R11, R13
|
||
|
|
MOVQ DI, CX
|
||
|
|
SHRQ CL, R13
|
||
|
|
|
||
|
|
// v0 := table[val0&mask]
|
||
|
|
MOVW (R9)(R13*2), CX
|
||
|
|
|
||
|
|
// br3.advance(uint8(v0.entry)
|
||
|
|
MOVB CH, AL
|
||
|
|
SHLQ CL, R11
|
||
|
|
ADDB CL, R12
|
||
|
|
|
||
|
|
// val1 := br3.peekTopBits(peekBits)
|
||
|
|
MOVQ R11, R13
|
||
|
|
MOVQ DI, CX
|
||
|
|
SHRQ CL, R13
|
||
|
|
|
||
|
|
// v1 := table[val0&mask]
|
||
|
|
MOVW (R9)(R13*2), CX
|
||
|
|
|
||
|
|
// br3.advance(uint8(v1.entry)
|
||
|
|
MOVB CH, AH
|
||
|
|
SHLQ CL, R11
|
||
|
|
ADDB CL, R12
|
||
|
|
BSWAPL AX
|
||
|
|
|
||
|
|
// val2 := br3.peekTopBits(peekBits)
|
||
|
|
MOVQ R11, R13
|
||
|
|
MOVQ DI, CX
|
||
|
|
SHRQ CL, R13
|
||
|
|
|
||
|
|
// v2 := table[val0&mask]
|
||
|
|
MOVW (R9)(R13*2), CX
|
||
|
|
|
||
|
|
// br3.advance(uint8(v2.entry)
|
||
|
|
MOVB CH, AH
|
||
|
|
SHLQ CL, R11
|
||
|
|
ADDB CL, R12
|
||
|
|
|
||
|
|
// val3 := br3.peekTopBits(peekBits)
|
||
|
|
MOVQ R11, R13
|
||
|
|
MOVQ DI, CX
|
||
|
|
SHRQ CL, R13
|
||
|
|
|
||
|
|
// v3 := table[val0&mask]
|
||
|
|
MOVW (R9)(R13*2), CX
|
||
|
|
|
||
|
|
// br3.advance(uint8(v3.entry)
|
||
|
|
MOVB CH, AL
|
||
|
|
SHLQ CL, R11
|
||
|
|
ADDB CL, R12
|
||
|
|
BSWAPL AX
|
||
|
|
|
||
|
|
// these four writes get coalesced
|
||
|
|
// out[id * dstEvery + 0] = uint8(v0.entry >> 8)
|
||
|
|
// out[id * dstEvery + 1] = uint8(v1.entry >> 8)
|
||
|
|
// out[id * dstEvery + 3] = uint8(v2.entry >> 8)
|
||
|
|
// out[id * dstEvery + 4] = uint8(v3.entry >> 8)
|
||
|
|
LEAQ (R8)(R8*2), CX
|
||
|
|
MOVL AX, (BX)(CX*1)
|
||
|
|
|
||
|
|
// update the bitreader structure
|
||
|
|
MOVQ R11, 176(R10)
|
||
|
|
MOVB R12, 184(R10)
|
||
|
|
ADDQ $0x04, BX
|
||
|
|
TESTB DL, DL
|
||
|
|
JZ main_loop
|
||
|
|
MOVQ ctx+0(FP), AX
|
||
|
|
SUBQ 16(AX), BX
|
||
|
|
SHLQ $0x02, BX
|
||
|
|
MOVQ BX, 40(AX)
|
||
|
|
RET
|
||
|
|
|
||
|
|
// func decompress1x_main_loop_amd64(ctx *decompress1xContext)
|
||
|
|
TEXT ·decompress1x_main_loop_amd64(SB), $0-8
|
||
|
|
MOVQ ctx+0(FP), CX
|
||
|
|
MOVQ 16(CX), DX
|
||
|
|
MOVQ 24(CX), BX
|
||
|
|
CMPQ BX, $0x04
|
||
|
|
JB error_max_decoded_size_exceeded
|
||
|
|
LEAQ (DX)(BX*1), BX
|
||
|
|
MOVQ (CX), SI
|
||
|
|
MOVQ (SI), R8
|
||
|
|
MOVQ 24(SI), R9
|
||
|
|
MOVQ 32(SI), R10
|
||
|
|
MOVBQZX 40(SI), R11
|
||
|
|
MOVQ 32(CX), SI
|
||
|
|
MOVBQZX 8(CX), DI
|
||
|
|
JMP loop_condition
|
||
|
|
|
||
|
|
main_loop:
|
||
|
|
// Check if we have room for 4 bytes in the output buffer
|
||
|
|
LEAQ 4(DX), CX
|
||
|
|
CMPQ CX, BX
|
||
|
|
JGE error_max_decoded_size_exceeded
|
||
|
|
|
||
|
|
// Decode 4 values
|
||
|
|
CMPQ R11, $0x20
|
||
|
|
JL bitReader_fillFast_1_end
|
||
|
|
SUBQ $0x20, R11
|
||
|
|
SUBQ $0x04, R9
|
||
|
|
MOVL (R8)(R9*1), R12
|
||
|
|
MOVQ R11, CX
|
||
|
|
SHLQ CL, R12
|
||
|
|
ORQ R12, R10
|
||
|
|
|
||
|
|
bitReader_fillFast_1_end:
|
||
|
|
MOVQ DI, CX
|
||
|
|
MOVQ R10, R12
|
||
|
|
SHRQ CL, R12
|
||
|
|
MOVW (SI)(R12*2), CX
|
||
|
|
MOVB CH, AL
|
||
|
|
MOVBQZX CL, CX
|
||
|
|
ADDQ CX, R11
|
||
|
|
SHLQ CL, R10
|
||
|
|
MOVQ DI, CX
|
||
|
|
MOVQ R10, R12
|
||
|
|
SHRQ CL, R12
|
||
|
|
MOVW (SI)(R12*2), CX
|
||
|
|
MOVB CH, AH
|
||
|
|
MOVBQZX CL, CX
|
||
|
|
ADDQ CX, R11
|
||
|
|
SHLQ CL, R10
|
||
|
|
BSWAPL AX
|
||
|
|
CMPQ R11, $0x20
|
||
|
|
JL bitReader_fillFast_2_end
|
||
|
|
SUBQ $0x20, R11
|
||
|
|
SUBQ $0x04, R9
|
||
|
|
MOVL (R8)(R9*1), R12
|
||
|
|
MOVQ R11, CX
|
||
|
|
SHLQ CL, R12
|
||
|
|
ORQ R12, R10
|
||
|
|
|
||
|
|
bitReader_fillFast_2_end:
|
||
|
|
MOVQ DI, CX
|
||
|
|
MOVQ R10, R12
|
||
|
|
SHRQ CL, R12
|
||
|
|
MOVW (SI)(R12*2), CX
|
||
|
|
MOVB CH, AH
|
||
|
|
MOVBQZX CL, CX
|
||
|
|
ADDQ CX, R11
|
||
|
|
SHLQ CL, R10
|
||
|
|
MOVQ DI, CX
|
||
|
|
MOVQ R10, R12
|
||
|
|
SHRQ CL, R12
|
||
|
|
MOVW (SI)(R12*2), CX
|
||
|
|
MOVB CH, AL
|
||
|
|
MOVBQZX CL, CX
|
||
|
|
ADDQ CX, R11
|
||
|
|
SHLQ CL, R10
|
||
|
|
BSWAPL AX
|
||
|
|
|
||
|
|
// Store the decoded values
|
||
|
|
MOVL AX, (DX)
|
||
|
|
ADDQ $0x04, DX
|
||
|
|
|
||
|
|
loop_condition:
|
||
|
|
CMPQ R9, $0x08
|
||
|
|
JGE main_loop
|
||
|
|
|
||
|
|
// Update ctx structure
|
||
|
|
MOVQ ctx+0(FP), AX
|
||
|
|
SUBQ 16(AX), DX
|
||
|
|
MOVQ DX, 40(AX)
|
||
|
|
MOVQ (AX), AX
|
||
|
|
MOVQ R9, 24(AX)
|
||
|
|
MOVQ R10, 32(AX)
|
||
|
|
MOVB R11, 40(AX)
|
||
|
|
RET
|
||
|
|
|
||
|
|
// Report error
|
||
|
|
error_max_decoded_size_exceeded:
|
||
|
|
MOVQ ctx+0(FP), AX
|
||
|
|
MOVQ $-1, CX
|
||
|
|
MOVQ CX, 40(AX)
|
||
|
|
RET
|
||
|
|
|
||
|
|
// func decompress1x_main_loop_bmi2(ctx *decompress1xContext)
|
||
|
|
// Requires: BMI2
|
||
|
|
TEXT ·decompress1x_main_loop_bmi2(SB), $0-8
|
||
|
|
MOVQ ctx+0(FP), CX
|
||
|
|
MOVQ 16(CX), DX
|
||
|
|
MOVQ 24(CX), BX
|
||
|
|
CMPQ BX, $0x04
|
||
|
|
JB error_max_decoded_size_exceeded
|
||
|
|
LEAQ (DX)(BX*1), BX
|
||
|
|
MOVQ (CX), SI
|
||
|
|
MOVQ (SI), R8
|
||
|
|
MOVQ 24(SI), R9
|
||
|
|
MOVQ 32(SI), R10
|
||
|
|
MOVBQZX 40(SI), R11
|
||
|
|
MOVQ 32(CX), SI
|
||
|
|
MOVBQZX 8(CX), DI
|
||
|
|
JMP loop_condition
|
||
|
|
|
||
|
|
main_loop:
|
||
|
|
// Check if we have room for 4 bytes in the output buffer
|
||
|
|
LEAQ 4(DX), CX
|
||
|
|
CMPQ CX, BX
|
||
|
|
JGE error_max_decoded_size_exceeded
|
||
|
|
|
||
|
|
// Decode 4 values
|
||
|
|
CMPQ R11, $0x20
|
||
|
|
JL bitReader_fillFast_1_end
|
||
|
|
SUBQ $0x20, R11
|
||
|
|
SUBQ $0x04, R9
|
||
|
|
MOVL (R8)(R9*1), CX
|
||
|
|
SHLXQ R11, CX, CX
|
||
|
|
ORQ CX, R10
|
||
|
|
|
||
|
|
bitReader_fillFast_1_end:
|
||
|
|
SHRXQ DI, R10, CX
|
||
|
|
MOVW (SI)(CX*2), CX
|
||
|
|
MOVB CH, AL
|
||
|
|
MOVBQZX CL, CX
|
||
|
|
ADDQ CX, R11
|
||
|
|
SHLXQ CX, R10, R10
|
||
|
|
SHRXQ DI, R10, CX
|
||
|
|
MOVW (SI)(CX*2), CX
|
||
|
|
MOVB CH, AH
|
||
|
|
MOVBQZX CL, CX
|
||
|
|
ADDQ CX, R11
|
||
|
|
SHLXQ CX, R10, R10
|
||
|
|
BSWAPL AX
|
||
|
|
CMPQ R11, $0x20
|
||
|
|
JL bitReader_fillFast_2_end
|
||
|
|
SUBQ $0x20, R11
|
||
|
|
SUBQ $0x04, R9
|
||
|
|
MOVL (R8)(R9*1), CX
|
||
|
|
SHLXQ R11, CX, CX
|
||
|
|
ORQ CX, R10
|
||
|
|
|
||
|
|
bitReader_fillFast_2_end:
|
||
|
|
SHRXQ DI, R10, CX
|
||
|
|
MOVW (SI)(CX*2), CX
|
||
|
|
MOVB CH, AH
|
||
|
|
MOVBQZX CL, CX
|
||
|
|
ADDQ CX, R11
|
||
|
|
SHLXQ CX, R10, R10
|
||
|
|
SHRXQ DI, R10, CX
|
||
|
|
MOVW (SI)(CX*2), CX
|
||
|
|
MOVB CH, AL
|
||
|
|
MOVBQZX CL, CX
|
||
|
|
ADDQ CX, R11
|
||
|
|
SHLXQ CX, R10, R10
|
||
|
|
BSWAPL AX
|
||
|
|
|
||
|
|
// Store the decoded values
|
||
|
|
MOVL AX, (DX)
|
||
|
|
ADDQ $0x04, DX
|
||
|
|
|
||
|
|
loop_condition:
|
||
|
|
CMPQ R9, $0x08
|
||
|
|
JGE main_loop
|
||
|
|
|
||
|
|
// Update ctx structure
|
||
|
|
MOVQ ctx+0(FP), AX
|
||
|
|
SUBQ 16(AX), DX
|
||
|
|
MOVQ DX, 40(AX)
|
||
|
|
MOVQ (AX), AX
|
||
|
|
MOVQ R9, 24(AX)
|
||
|
|
MOVQ R10, 32(AX)
|
||
|
|
MOVB R11, 40(AX)
|
||
|
|
RET
|
||
|
|
|
||
|
|
// Report error
|
||
|
|
error_max_decoded_size_exceeded:
|
||
|
|
MOVQ ctx+0(FP), AX
|
||
|
|
MOVQ $-1, CX
|
||
|
|
MOVQ CX, 40(AX)
|
||
|
|
RET
|