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/*
* Copyright (c) 2018 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef included_clib_pmc_h
#define included_clib_pmc_h
#if defined (__x86_64__)
always_inline u64
clib_rdpmc (int counter_id)
{
u32 a, d;
asm volatile ("rdpmc":"=a" (a), "=d" (d):"c" (counter_id));
return (u64) a + ((u64) d << (u64) 32);
}
#else
always_inline u64
clib_rdpmc (int counter_id)
{
return 0ULL;
}
#endif /* __aarch64__ */
#endif /* included_clib_pmc_h */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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