From 2aa4a82499d4becd2284cdb482213d541b8804dd Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 28 Apr 2024 16:29:10 +0200
Subject: Adding upstream version 86.0.1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 other-licenses/7zstub/src/Asm/x86/7zCrcOpt.asm | 147 +++++++++++++++++++++++++
 1 file changed, 147 insertions(+)
 create mode 100644 other-licenses/7zstub/src/Asm/x86/7zCrcOpt.asm

(limited to 'other-licenses/7zstub/src/Asm/x86/7zCrcOpt.asm')

diff --git a/other-licenses/7zstub/src/Asm/x86/7zCrcOpt.asm b/other-licenses/7zstub/src/Asm/x86/7zCrcOpt.asm
new file mode 100644
index 0000000000..2de51719ad
--- /dev/null
+++ b/other-licenses/7zstub/src/Asm/x86/7zCrcOpt.asm
@@ -0,0 +1,147 @@
+; 7zCrcOpt.asm -- CRC32 calculation : optimized version
+; 2009-12-12 : Igor Pavlov : Public domain
+
+include 7zAsm.asm
+
+MY_ASM_START
+
+rD   equ  r2
+rN   equ  r7
+
+ifdef x64
+    num_VAR     equ r8
+    table_VAR   equ r9
+else
+    data_size   equ (REG_SIZE * 5)
+    crc_table   equ (REG_SIZE + data_size)
+    num_VAR     equ [r4 + data_size]
+    table_VAR   equ [r4 + crc_table]
+endif
+
+SRCDAT  equ  rN + rD + 4 *
+
+CRC macro op:req, dest:req, src:req, t:req
+    op      dest, DWORD PTR [r5 + src * 4 + 0400h * t]
+endm
+
+CRC_XOR macro dest:req, src:req, t:req
+    CRC xor, dest, src, t
+endm
+
+CRC_MOV macro dest:req, src:req, t:req
+    CRC mov, dest, src, t
+endm
+
+CRC1b macro
+    movzx   x6, BYTE PTR [rD]
+    inc     rD
+    movzx   x3, x0_L
+    xor     x6, x3
+    shr     x0, 8
+    CRC     xor, x0, r6, 0
+    dec     rN
+endm
+
+MY_PROLOG macro crc_end:req
+    MY_PUSH_4_REGS
+    
+    mov     x0, x1
+    mov     rN, num_VAR
+    mov     r5, table_VAR
+    test    rN, rN
+    jz      crc_end
+  @@:
+    test    rD, 7
+    jz      @F
+    CRC1b
+    jnz     @B
+  @@:
+    cmp     rN, 16
+    jb      crc_end
+    add     rN, rD
+    mov     num_VAR, rN
+    sub     rN, 8
+    and     rN, NOT 7
+    sub     rD, rN
+    xor     x0, [SRCDAT 0]
+endm
+
+MY_EPILOG macro crc_end:req
+    xor     x0, [SRCDAT 0]
+    mov     rD, rN
+    mov     rN, num_VAR
+    sub     rN, rD
+  crc_end:
+    test    rN, rN
+    jz      @F
+    CRC1b
+    jmp     crc_end
+  @@:
+    MY_POP_4_REGS
+endm
+
+MY_PROC CrcUpdateT8, 4
+    MY_PROLOG crc_end_8
+    mov     x1, [SRCDAT 1]
+    align 16
+  main_loop_8:
+    mov     x6, [SRCDAT 2]
+    movzx   x3, x1_L
+    CRC_XOR x6, r3, 3
+    movzx   x3, x1_H
+    CRC_XOR x6, r3, 2
+    shr     x1, 16
+    movzx   x3, x1_L
+    movzx   x1, x1_H
+    CRC_XOR x6, r3, 1
+    movzx   x3, x0_L
+    CRC_XOR x6, r1, 0
+
+    mov     x1, [SRCDAT 3]
+    CRC_XOR x6, r3, 7
+    movzx   x3, x0_H
+    shr     x0, 16
+    CRC_XOR x6, r3, 6
+    movzx   x3, x0_L
+    CRC_XOR x6, r3, 5
+    movzx   x3, x0_H
+    CRC_MOV x0, r3, 4
+    xor     x0, x6
+    add     rD, 8
+    jnz     main_loop_8
+
+    MY_EPILOG crc_end_8
+MY_ENDP
+
+MY_PROC CrcUpdateT4, 4
+    MY_PROLOG crc_end_4
+    align 16
+  main_loop_4:
+    movzx   x1, x0_L
+    movzx   x3, x0_H
+    shr     x0, 16
+    movzx   x6, x0_H
+    and     x0, 0FFh
+    CRC_MOV x1, r1, 3
+    xor     x1, [SRCDAT 1]
+    CRC_XOR x1, r3, 2
+    CRC_XOR x1, r6, 0
+    CRC_XOR x1, r0, 1
+ 
+    movzx   x0, x1_L
+    movzx   x3, x1_H
+    shr     x1, 16
+    movzx   x6, x1_H
+    and     x1, 0FFh
+    CRC_MOV x0, r0, 3
+    xor     x0, [SRCDAT 2]
+    CRC_XOR x0, r3, 2
+    CRC_XOR x0, r6, 0
+    CRC_XOR x0, r1, 1
+    add     rD, 8
+    jnz     main_loop_4
+
+    MY_EPILOG crc_end_4
+MY_ENDP
+
+end
-- 
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