Date: Thu, 24 Jun 2021 05:27:28 GMT From: Colin Percival <cperciva@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: e6caac717b4f - main - libsa: Add tslog support for arm64 Message-ID: <202106240527.15O5RS2m000856@gitrepo.freebsd.org>
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The branch main has been updated by cperciva: URL: https://cgit.FreeBSD.org/src/commit/?id=e6caac717b4fc2b87cf93f67109884e768253e77 commit e6caac717b4fc2b87cf93f67109884e768253e77 Author: Colin Percival <cperciva@FreeBSD.org> AuthorDate: 2021-06-24 05:21:23 +0000 Commit: Colin Percival <cperciva@FreeBSD.org> CommitDate: 2021-06-24 05:21:23 +0000 libsa: Add tslog support for arm64 The original code only supported x86 and used rdtsc(); we now also support arm64 and use the CNTVCT_EL0 special register. --- stand/libsa/tslog.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/stand/libsa/tslog.c b/stand/libsa/tslog.c index 7ea18e0bb8f8..c6164aab02a9 100644 --- a/stand/libsa/tslog.c +++ b/stand/libsa/tslog.c @@ -29,7 +29,11 @@ __FBSDID("$FreeBSD$"); #include <sys/types.h> +#if defined(__amd64__) || defined(__i386__) #include <machine/cpufunc.h> +#elif defined(__aarch64__) +#include <machine/armreg.h> +#endif #include <stand.h> @@ -60,6 +64,8 @@ tslog(const char * type, const char * f, const char * s) { #if defined(__amd64__) || defined(__i386__) uint64_t tsc = rdtsc(); +#elif defined(__aarch64__) + uint64_t tsc = READ_SPECIALREG(cntvct_el0); #else uint64_t tsc = 0; #endif
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