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| author | Colin Percival <cperciva@FreeBSD.org> | 2021-06-24 05:21:23 +0000 |
|---|---|---|
| committer | Colin Percival <cperciva@FreeBSD.org> | 2021-06-24 05:21:23 +0000 |
| commit | e6caac717b4fc2b87cf93f67109884e768253e77 (patch) | |
| tree | af0e7c131c90d84155791cb15b22eee6e3413f2e | |
| parent | ccadcb8f3343562f22a426e845dba640319d4355 (diff) | |
| download | src-e6caac717b4fc2b87cf93f67109884e768253e77.tar.gz src-e6caac717b4fc2b87cf93f67109884e768253e77.zip | |
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.
| -rw-r--r-- | stand/libsa/tslog.c | 6 |
1 files changed, 6 insertions, 0 deletions
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 |