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From: Tyler Retzlaff <roretzla@linux.microsoft.com>
To: dev@dpdk.org
Cc: bruce.richardson@intel.com, david.marchand@redhat.com, thomas@monjalon.net,
mb@smartsharesystems.com, konstantin.ananyev@huawei.com,
Tyler Retzlaff <roretzla@linux.microsoft.com>
Subject: [PATCH v6 01/15] eal: use rdtsc intrinsic
Date: Fri, 14 Apr 2023 18:15:32 -0700
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Inline assembly is not supported for MSVC x64. Convert code to use
__rdtsc intrinsic.
Signed-off-by: Tyler Retzlaff <roretzla@linux.microsoft.com>
Acked-by: Konstantin Ananyev <konstantin.v.ananyev@yandex.ru>
---
lib/eal/x86/include/rte_cycles.h | 14 ++++++++------
1 file changed, 8 insertions(+), 6 deletions(-)
diff --git a/lib/eal/x86/include/rte_cycles.h b/lib/eal/x86/include/rte_cycles.h
index a461a4d..cca5122 100644
--- a/lib/eal/x86/include/rte_cycles.h
+++ b/lib/eal/x86/include/rte_cycles.h
@@ -6,6 +6,12 @@
#ifndef _RTE_CYCLES_X86_64_H_
#define _RTE_CYCLES_X86_64_H_
+#ifndef RTE_TOOLCHAIN_MSVC
+#include <x86intrin.h>
+#else
+#include <intrin.h>
+#endif
+
#ifdef __cplusplus
extern "C" {
#endif
@@ -23,6 +29,7 @@
static inline uint64_t
rte_rdtsc(void)
{
+#ifdef RTE_LIBRTE_EAL_VMWARE_TSC_MAP_SUPPORT
union {
uint64_t tsc_64;
RTE_STD_C11
@@ -32,7 +39,6 @@
};
} tsc;
-#ifdef RTE_LIBRTE_EAL_VMWARE_TSC_MAP_SUPPORT
if (unlikely(rte_cycles_vmware_tsc_map)) {
/* ecx = 0x10000 corresponds to the physical TSC for VMware */
asm volatile("rdpmc" :
@@ -42,11 +48,7 @@
return tsc.tsc_64;
}
#endif
-
- asm volatile("rdtsc" :
- "=a" (tsc.lo_32),
- "=d" (tsc.hi_32));
- return tsc.tsc_64;
+ return __rdtsc();
}
static inline uint64_t
--
1.8.3.1