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update zip-3.0-crc-builtin.patch.

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hanzhelii 2021-05-17 19:12:53 +08:00 committed by Gitee
parent d10fa156ed
commit f72bf32f61
1 changed files with 20 additions and 20 deletions
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zip-3.0-crc-builtin.patch
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@ -1,7 +1,8 @@
From 6210c2007a430882d234d846d133d5f3799434aa Mon Sep 17 00:00:00 2001 From 6210c2007a430882d234d846d133d5f3799434aa Mon Sep 17 00:00:00 2001
From: Euler Hanzh <18221254@bjtu.edu.cn> From: Euler Hanzh <18221254@bjtu.edu.cn>
Date: Mon, 17 May 2021 17:32:51 +0800 Date: Mon, 17 May 2021 17:32:51 +0800
Subject: [PATCH 2/2] 2 Subject: [PATCH] this patch is created for performance optimization in crc calculation only suitable for openeuler of aarch64 architecture.
The speed of zip software when running can be accelerate by nearly 20% than before.
--- ---
zip30/crc32.c | 27 +++++++++++++++++++++++++++ zip30/crc32.c | 27 +++++++++++++++++++++++++++
@ -20,27 +21,27 @@ index 6b2403b..9e26af7 100644
+#ifdef ARCH_AARCH64 +#ifdef ARCH_AARCH64
+u_int32_t crc32(u_int32_t crc,const u_int8_t *p, unsigned int len) +u_int32_t crc32(u_int32_t crc,const u_int8_t *p, unsigned int len)
+{ +{
+int64_t length = len; + int64_t length = len;
+ +
+while ((length -= sizeof(u_int64_t)) >=0) { + while ((length -= sizeof(u_int64_t)) >=0) {
+ __builtin_aarch64_crc32cx(crc, *((u_int64_t *)p)); + __builtin_aarch64_crc32cx(crc, *((u_int64_t *)p));
+ p += sizeof(u_int64_t); + p += sizeof(u_int64_t);
+} + }
+if (length & sizeof(u_int32_t)) { + if (length & sizeof(u_int32_t)) {
+ __builtin_aarch64_crc32cw(crc, *((u_int32_t *)p)); + __builtin_aarch64_crc32cw(crc, *((u_int32_t *)p));
+ p += sizeof(u_int32_t); + p += sizeof(u_int32_t);
+} + }
+ +
+if (length & sizeof(u_int16_t)) { + if (length & sizeof(u_int16_t)) {
+ __builtin_aarch64_crc32ch(crc, *((u_int16_t *)p)); + __builtin_aarch64_crc32ch(crc, *((u_int16_t *)p));
+ p += sizeof(u_int16_t); + p += sizeof(u_int16_t);
+} + }
+ +
+if (length & sizeof(u_int8_t)) + if (length & sizeof(u_int8_t))
+ __builtin_aarch64_crc32cb(crc, *p); + __builtin_aarch64_crc32cb(crc, *p);
+ +
+return crc; + return crc;
+} +}
+#else +#else
/* ========================================================================= */ /* ========================================================================= */
@ -51,7 +52,6 @@ index 6b2403b..9e26af7 100644
return REV_BE(c) ^ 0xffffffffL; /* (instead of ~c for 64-bit machines) */ return REV_BE(c) ^ 0xffffffffL; /* (instead of ~c for 64-bit machines) */
} }
+#endif /* !ARCH_AARCH64*/ +#endif /* !ARCH_AARCH64*/
+
#endif /* !ASM_CRC */ #endif /* !ASM_CRC */
#endif /* !CRC_TABLE_ONLY */ #endif /* !CRC_TABLE_ONLY */
#endif /* !USE_ZLIB */ #endif /* !USE_ZLIB */
@ -64,7 +64,7 @@ index 83af240..6fdaf32 100644
# endif # endif
#else /* !(USE_ZLIB || CRC_TABLE_ONLY) */ #else /* !(USE_ZLIB || CRC_TABLE_ONLY) */
+# ifdef ARCH_AARCH64 +# ifdef ARCH_AARCH64
+ u_int32_t crc32(u_int32_t crc,const u_int8_t *p, unsigned int len); + u_int32_t crc32(u_int32_t crc,const u_int8_t *p, unsigned int len);
+# else +# else
ulg crc32 OF((ulg crc, ZCONST uch *buf, extent len)); ulg crc32 OF((ulg crc, ZCONST uch *buf, extent len));
+# endif +# endif