From: Michael Qiu <michael.qiu@intel.com>
Date: Mon, 23 Mar 2015 08:43:07 +0000 (+0800)
Subject: hash: fix crc32 error when built for i686 and run in x86_64
X-Git-Tag: spdx-start~9391
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=42a03256321858a576cef1d2c351b1015b3b4bf4;p=dpdk.git

hash: fix crc32 error when built for i686 and run in x86_64

When compile target i686 in platform x86_64, the stub function will
be called, and return zero.

Fixes: 12fa4a00788d ("hash: fix unsupported crc instruction in i686 platform")

Signed-off-by: Michael Qiu <michael.qiu@intel.com>
Acked-by: Thomas Monjalon <thomas.monjalon@6wind.com>
---

diff --git a/lib/librte_hash/rte_hash_crc.h b/lib/librte_hash/rte_hash_crc.h
index 3dcd362841..1cd626cb4a 100644
--- a/lib/librte_hash/rte_hash_crc.h
+++ b/lib/librte_hash/rte_hash_crc.h
@@ -366,7 +366,6 @@ crc32c_2words(uint64_t data, uint32_t init_val)
 }
 
 #if defined(RTE_ARCH_I686) || defined(RTE_ARCH_X86_64)
-
 static inline uint32_t
 crc32c_sse42_u32(uint32_t data, uint32_t init_val)
 {
@@ -390,27 +389,9 @@ crc32c_sse42_u64_mimic(uint64_t data, uint64_t init_val)
 	init_val = crc32c_sse42_u32(d.u32[1], init_val);
 	return init_val;
 }
-
-#else
-
-static inline uint32_t
-crc32c_sse42_u32(__rte_unused uint32_t data,
-                 __rte_unused uint32_t init_val)
-{
-	return 0;
-}
-
-static inline uint32_t
-crc32c_sse42_u64_mimic(__rte_unused uint32_t data,
-                       __rte_unused uint32_t init_val)
-{
-	return 0;
-}
-
 #endif
 
 #ifdef RTE_ARCH_X86_64
-
 static inline uint32_t
 crc32c_sse42_u64(uint64_t data, uint64_t init_val)
 {
@@ -420,16 +401,6 @@ crc32c_sse42_u64(uint64_t data, uint64_t init_val)
 			: [data] "rm" (data));
 	return init_val;
 }
-
-#else
-
-static inline uint32_t
-crc32c_sse42_u64(__rte_unused uint64_t data,
-                 __rte_unused uint64_t init_val)
-{
-	return 0;
-}
-
 #endif
 
 #define CRC32_SW            (1U << 0)
@@ -489,8 +460,10 @@ rte_hash_crc_init_alg(void)
 static inline uint32_t
 rte_hash_crc_4byte(uint32_t data, uint32_t init_val)
 {
+#if defined RTE_ARCH_I686 || defined RTE_ARCH_X86_64
 	if (likely(crc32_alg & CRC32_SSE42))
 		return crc32c_sse42_u32(data, init_val);
+#endif
 
 	return crc32c_1word(data, init_val);
 }
@@ -510,11 +483,15 @@ rte_hash_crc_4byte(uint32_t data, uint32_t init_val)
 static inline uint32_t
 rte_hash_crc_8byte(uint64_t data, uint32_t init_val)
 {
+#ifdef RTE_ARCH_X86_64
 	if (likely(crc32_alg == CRC32_SSE42_x64))
 		return crc32c_sse42_u64(data, init_val);
+#endif
 
+#if defined RTE_ARCH_I686 || defined RTE_ARCH_X86_64
 	if (likely(crc32_alg & CRC32_SSE42))
 		return crc32c_sse42_u64_mimic(data, init_val);
+#endif
 
 	return crc32c_2words(data, init_val);
 }