From 96ade47c182bf37a2efca2aa62922e54e5ff1660 Mon Sep 17 00:00:00 2001
From: Arttu Tarkiainen <arttu.tarkiainen@qt.io>
Date: Wed, 6 Apr 2022 13:33:38 +0300
Subject: Move LZMA SDK to 3rdparty subdirectory

Also add attribution document.

Task-number: QTIFW-2336
Change-Id: I91546bc6c3ace244e4b546b945f40b7d204f7463
Reviewed-by: Katja Marttila <katja.marttila@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
---
 src/libs/3rdparty/7zip/win/C/7zCrcOpt.c | 66 +++++++++++++++++++++++++++++++++
 1 file changed, 66 insertions(+)
 create mode 100644 src/libs/3rdparty/7zip/win/C/7zCrcOpt.c

(limited to 'src/libs/3rdparty/7zip/win/C/7zCrcOpt.c')

diff --git a/src/libs/3rdparty/7zip/win/C/7zCrcOpt.c b/src/libs/3rdparty/7zip/win/C/7zCrcOpt.c
new file mode 100644
index 000000000..ce132b5d4
--- /dev/null
+++ b/src/libs/3rdparty/7zip/win/C/7zCrcOpt.c
@@ -0,0 +1,66 @@
+/* 7zCrcOpt.c -- CRC32 calculation
+2013-11-12 : Igor Pavlov : Public domain */
+
+#include "Precomp.h"
+
+#include "CpuArch.h"
+
+#define CRC_UPDATE_BYTE_2(crc, b) (table[((crc) ^ (b)) & 0xFF] ^ ((crc) >> 8))
+
+#ifndef MY_CPU_BE
+
+UInt32 MY_FAST_CALL CrcUpdateT4(UInt32 v, const void *data, size_t size, const UInt32 *table)
+{
+  const Byte *p = (const Byte *)data;
+  for (; size > 0 && ((unsigned)(ptrdiff_t)p & 3) != 0; size--, p++)
+    v = CRC_UPDATE_BYTE_2(v, *p);
+  for (; size >= 4; size -= 4, p += 4)
+  {
+    v ^= *(const UInt32 *)p;
+    v =
+      table[0x300 + (v & 0xFF)] ^
+      table[0x200 + ((v >> 8) & 0xFF)] ^
+      table[0x100 + ((v >> 16) & 0xFF)] ^
+      table[0x000 + ((v >> 24))];
+  }
+  for (; size > 0; size--, p++)
+    v = CRC_UPDATE_BYTE_2(v, *p);
+  return v;
+}
+
+UInt32 MY_FAST_CALL CrcUpdateT8(UInt32 v, const void *data, size_t size, const UInt32 *table)
+{
+  return CrcUpdateT4(v, data, size, table);
+}
+
+#endif
+
+
+#ifndef MY_CPU_LE
+
+#define CRC_UINT32_SWAP(v) ((v >> 24) | ((v >> 8) & 0xFF00) | ((v << 8) & 0xFF0000) | (v << 24))
+
+UInt32 MY_FAST_CALL CrcUpdateT1_BeT4(UInt32 v, const void *data, size_t size, const UInt32 *table)
+{
+  const Byte *p = (const Byte *)data;
+  for (; size > 0 && ((unsigned)(ptrdiff_t)p & 3) != 0; size--, p++)
+    v = CRC_UPDATE_BYTE_2(v, *p);
+  v = CRC_UINT32_SWAP(v);
+  table += 0x100;
+  for (; size >= 4; size -= 4, p += 4)
+  {
+    v ^= *(const UInt32 *)p;
+    v =
+      table[0x000 + (v & 0xFF)] ^
+      table[0x100 + ((v >> 8) & 0xFF)] ^
+      table[0x200 + ((v >> 16) & 0xFF)] ^
+      table[0x300 + ((v >> 24))];
+  }
+  table -= 0x100;
+  v = CRC_UINT32_SWAP(v);
+  for (; size > 0; size--, p++)
+    v = CRC_UPDATE_BYTE_2(v, *p);
+  return v;
+}
+
+#endif
-- 
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