[dpdk-dev] [PATCH 1/3 v2] librte_hash: Fix unsupported instruction `crc32' in i686 platform

Michael Qiu michael.qiu at intel.com
Thu Mar 5 17:55:30 CET 2015


CC rte_hash.o
Error: unsupported instruction `crc32'

The root cause is that i686 platform does not support 'crc32q'
Need make it only available in x86_64 platform

Signed-off-by: Michael Qiu <michael.qiu at intel.com>
---
v2 --> v1:
         Make crc32 instruction only works in X86 platform
 lib/librte_hash/rte_hash_crc.h | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/lib/librte_hash/rte_hash_crc.h b/lib/librte_hash/rte_hash_crc.h
index d28bb2a..c0a789e 100644
--- a/lib/librte_hash/rte_hash_crc.h
+++ b/lib/librte_hash/rte_hash_crc.h
@@ -364,6 +364,7 @@ crc32c_2words(uint64_t data, uint32_t init_val)
 	return crc;
 }
 
+#if defined RTE_ARCH_I686 || defined RTE_ARCH_X86_64
 static inline uint32_t
 crc32c_sse42_u32(uint32_t data, uint32_t init_val)
 {
@@ -373,7 +374,9 @@ crc32c_sse42_u32(uint32_t data, uint32_t init_val)
 			: [data] "rm" (data));
 	return init_val;
 }
+#endif
 
+#ifdef RTE_ARCH_X86_64
 static inline uint32_t
 crc32c_sse42_u64(uint64_t data, uint64_t init_val)
 {
@@ -383,7 +386,9 @@ crc32c_sse42_u64(uint64_t data, uint64_t init_val)
 			: [data] "rm" (data));
 	return init_val;
 }
+#endif
 
+#if defined RTE_ARCH_I686 || defined RTE_ARCH_X86_64
 static inline uint32_t
 crc32c_sse42_u64_mimic(uint64_t data, uint64_t init_val)
 {
@@ -397,6 +402,7 @@ crc32c_sse42_u64_mimic(uint64_t data, uint64_t init_val)
 	init_val = crc32c_sse42_u32(d.u32[1], init_val);
 	return init_val;
 }
+#endif
 
 #define CRC32_SW            (1U << 0)
 #define CRC32_SSE42         (1U << 1)
@@ -455,8 +461,10 @@ 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);
 }
@@ -476,11 +484,15 @@ 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);
 }
-- 
1.9.3



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