The branch main has been updated by bnovkov:
URL:
https://cgit.FreeBSD.org/src/commit/?id=593e874e61249c845ca83e9284e4d9061643e8fb
commit 593e874e61249c845ca83e9284e4d9061643e8fb
Author: Bojan Novković <bnov...@freebsd.org>
AuthorDate: 2024-12-15 14:02:13 +0000
Commit: Bojan Novković <bnov...@freebsd.org>
CommitDate: 2024-12-15 15:39:36 +0000
amd64: Add wrappers for XRSTORS and XSAVES
Reviewed by: kib
Differential Revision: https://reviews.freebsd.org/D46984
---
sys/amd64/include/cpufunc.h | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)
diff --git a/sys/amd64/include/cpufunc.h b/sys/amd64/include/cpufunc.h
index ca53d73b0186..d180f5c76afb 100644
--- a/sys/amd64/include/cpufunc.h
+++ b/sys/amd64/include/cpufunc.h
@@ -942,6 +942,29 @@ sgx_eremove(void *epc)
return (sgx_encls(SGX_EREMOVE, 0, (uint64_t)epc, 0));
}
+static __inline void
+xrstors(uint8_t *save_area, uint64_t state_bitmap)
+{
+ uint32_t low, hi;
+
+ low = state_bitmap;
+ hi = state_bitmap >> 32;
+ __asm __volatile("xrstors %0" : : "m"(*save_area), "a"(low),
+ "d"(hi));
+}
+
+static __inline void
+xsaves(uint8_t *save_area, uint64_t state_bitmap)
+{
+ uint32_t low, hi;
+
+ low = state_bitmap;
+ hi = state_bitmap >> 32;
+ __asm __volatile("xsaves %0" : "=m"(*save_area) : "a"(low),
+ "d"(hi)
+ : "memory");
+}
+
void reset_dbregs(void);
#ifdef _KERNEL
