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‎Asm/arm/7zCrcOpt.asm‎

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CODE32
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EXPORT |CrcUpdateT4@16|
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AREA |.text|, CODE, ARM
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MACRO
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CRC32_STEP_1
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ldrb r4, [r1], #1
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subs r2, r2, #1
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eor r4, r4, r0
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and r4, r4, #0xFF
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ldr r4, [r3, +r4, lsl #2]
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eor r0, r4, r0, lsr #8
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MEND
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MACRO
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CRC32_STEP_4 $STREAM_WORD
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eor r7, r7, r8
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eor r7, r7, r9
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eor r0, r0, r7
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eor r0, r0, $STREAM_WORD
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ldr $STREAM_WORD, [r1], #4
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and r7, r0, #0xFF
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and r8, r0, #0xFF00
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and r9, r0, #0xFF0000
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and r0, r0, #0xFF000000
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ldr r7, [r6, +r7, lsl #2]
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ldr r8, [r5, +r8, lsr #6]
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ldr r9, [r4, +r9, lsr #14]
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ldr r0, [r3, +r0, lsr #22]
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MEND
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|CrcUpdateT4@16| PROC
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stmdb sp!, {r4-r11, lr}
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cmp r2, #0
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beq |$fin|
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|$v1|
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tst r1, #7
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beq |$v2|
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CRC32_STEP_1
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bne |$v1|
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|$v2|
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cmp r2, #16
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blo |$v3|
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ldr r10, [r1], #4
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ldr r11, [r1], #4
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add r4, r3, #0x400
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add r5, r3, #0x800
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add r6, r3, #0xC00
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mov r7, #0
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mov r8, #0
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mov r9, #0
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sub r2, r2, #16
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|$loop|
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; pld [r1, #0x40]
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CRC32_STEP_4 r10
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CRC32_STEP_4 r11
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subs r2, r2, #8
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bhs |$loop|
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sub r1, r1, #8
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add r2, r2, #16
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eor r7, r7, r8
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eor r7, r7, r9
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eor r0, r0, r7
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|$v3|
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cmp r2, #0
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beq |$fin|
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|$v4|
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CRC32_STEP_1
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bne |$v4|
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|$fin|
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ldmia sp!, {r4-r11, pc}
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|CrcUpdateT4@16| ENDP
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END

‎Asm/x86/7zAsm.asm‎

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; 7zAsm.asm -- ASM macros
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; 2018-02-03 : Igor Pavlov : Public domain
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MY_ASM_START macro
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ifdef x64
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.code
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else
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.386
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.model flat
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_TEXT$00 SEGMENT PARA PUBLIC 'CODE'
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endif
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endm
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MY_PROC macro name:req, numParams:req
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align 16
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proc_numParams = numParams
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ifdef x64
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proc_name equ name
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else
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proc_name equ @CatStr(@,name,@, %numParams * 4)
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endif
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proc_name PROC
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endm
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MY_ENDP macro
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ifdef x64
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ret
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else
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if proc_numParams LT 3
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ret
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else
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ret (proc_numParams - 2) * 4
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endif
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endif
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proc_name ENDP
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endm
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ifdef x64
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REG_SIZE equ 8
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REG_LOGAR_SIZE equ 3
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else
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REG_SIZE equ 4
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REG_LOGAR_SIZE equ 2
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endif
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x0 equ EAX
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x1 equ ECX
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x2 equ EDX
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x3 equ EBX
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x4 equ ESP
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x5 equ EBP
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x6 equ ESI
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x7 equ EDI
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x0_W equ AX
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x1_W equ CX
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x2_W equ DX
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x3_W equ BX
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x5_W equ BP
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x6_W equ SI
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x7_W equ DI
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x0_L equ AL
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x1_L equ CL
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x2_L equ DL
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x3_L equ BL
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x0_H equ AH
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x1_H equ CH
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x2_H equ DH
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x3_H equ BH
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ifdef x64
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x5_L equ BPL
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x6_L equ SIL
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x7_L equ DIL
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r0 equ RAX
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r1 equ RCX
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r2 equ RDX
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r3 equ RBX
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r4 equ RSP
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r5 equ RBP
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r6 equ RSI
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r7 equ RDI
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x8 equ r8d
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x9 equ r9d
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x10 equ r10d
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x11 equ r11d
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x12 equ r12d
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x13 equ r13d
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x14 equ r14d
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x15 equ r15d
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else
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r0 equ x0
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r1 equ x1
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r2 equ x2
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r3 equ x3
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r4 equ x4
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r5 equ x5
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r6 equ x6
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r7 equ x7
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endif
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MY_PUSH_4_REGS macro
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push r3
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push r5
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push r6
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push r7
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endm
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MY_POP_4_REGS macro
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pop r7
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pop r6
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pop r5
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pop r3
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endm
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ifdef x64
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; for WIN64-x64 ABI:
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REG_PARAM_0 equ r1
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REG_PARAM_1 equ r2
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REG_PARAM_2 equ r8
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REG_PARAM_3 equ r9
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MY_PUSH_PRESERVED_REGS macro
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MY_PUSH_4_REGS
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push r12
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push r13
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push r14
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push r15
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endm
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MY_POP_PRESERVED_REGS macro
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pop r15
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pop r14
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pop r13
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pop r12
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MY_POP_4_REGS
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endm
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endif

‎Asm/x86/7zCrcOpt.asm‎

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; 7zCrcOpt.asm -- CRC32 calculation : optimized version
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; 2009-12-12 : Igor Pavlov : Public domain
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include 7zAsm.asm
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MY_ASM_START
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rD equ r2
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rN equ r7
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ifdef x64
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num_VAR equ r8
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table_VAR equ r9
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else
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data_size equ (REG_SIZE * 5)
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crc_table equ (REG_SIZE + data_size)
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num_VAR equ [r4 + data_size]
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table_VAR equ [r4 + crc_table]
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endif
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SRCDAT equ rN + rD + 4 *
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CRC macro op:req, dest:req, src:req, t:req
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op dest, DWORD PTR [r5 + src * 4 + 0400h * t]
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endm
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CRC_XOR macro dest:req, src:req, t:req
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CRC xor, dest, src, t
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endm
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CRC_MOV macro dest:req, src:req, t:req
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CRC mov, dest, src, t
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endm
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CRC1b macro
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movzx x6, BYTE PTR [rD]
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inc rD
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movzx x3, x0_L
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xor x6, x3
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shr x0, 8
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CRC xor, x0, r6, 0
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dec rN
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endm
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MY_PROLOG macro crc_end:req
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MY_PUSH_4_REGS
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mov x0, x1
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mov rN, num_VAR
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mov r5, table_VAR
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test rN, rN
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jz crc_end
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@@:
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test rD, 7
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jz @F
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CRC1b
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jnz @B
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@@:
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cmp rN, 16
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jb crc_end
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add rN, rD
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mov num_VAR, rN
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sub rN, 8
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and rN, NOT 7
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sub rD, rN
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xor x0, [SRCDAT 0]
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endm
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MY_EPILOG macro crc_end:req
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xor x0, [SRCDAT 0]
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mov rD, rN
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mov rN, num_VAR
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sub rN, rD
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crc_end:
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test rN, rN
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jz @F
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CRC1b
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jmp crc_end
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@@:
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MY_POP_4_REGS
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endm
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MY_PROC CrcUpdateT8, 4
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MY_PROLOG crc_end_8
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mov x1, [SRCDAT 1]
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align 16
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main_loop_8:
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mov x6, [SRCDAT 2]
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movzx x3, x1_L
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CRC_XOR x6, r3, 3
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movzx x3, x1_H
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CRC_XOR x6, r3, 2
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shr x1, 16
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movzx x3, x1_L
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movzx x1, x1_H
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CRC_XOR x6, r3, 1
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movzx x3, x0_L
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CRC_XOR x6, r1, 0
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mov x1, [SRCDAT 3]
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CRC_XOR x6, r3, 7
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movzx x3, x0_H
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shr x0, 16
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CRC_XOR x6, r3, 6
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movzx x3, x0_L
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CRC_XOR x6, r3, 5
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movzx x3, x0_H
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CRC_MOV x0, r3, 4
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xor x0, x6
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add rD, 8
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jnz main_loop_8
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MY_EPILOG crc_end_8
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MY_ENDP
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MY_PROC CrcUpdateT4, 4
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MY_PROLOG crc_end_4
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align 16
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main_loop_4:
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movzx x1, x0_L
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movzx x3, x0_H
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shr x0, 16
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movzx x6, x0_H
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and x0, 0FFh
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CRC_MOV x1, r1, 3
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xor x1, [SRCDAT 1]
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CRC_XOR x1, r3, 2
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CRC_XOR x1, r6, 0
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CRC_XOR x1, r0, 1
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movzx x0, x1_L
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movzx x3, x1_H
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shr x1, 16
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movzx x6, x1_H
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and x1, 0FFh
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CRC_MOV x0, r0, 3
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xor x0, [SRCDAT 2]
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CRC_XOR x0, r3, 2
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CRC_XOR x0, r6, 0
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CRC_XOR x0, r1, 1
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add rD, 8
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jnz main_loop_4
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MY_EPILOG crc_end_4
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MY_ENDP
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end

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