From 73a209c0f7e350d819ce4b98374d4f2b83f7300d Mon Sep 17 00:00:00 2001
From: Ian Moffett <ian@osmora.org>
Date: Wed, 13 Mar 2024 21:20:53 -0400
Subject: kernel/amd64: cpu: Add fxsave/fxrstor helpers
Signed-off-by: Ian Moffett <ian@osmora.org>
---
sys/include/arch/amd64/cpu.h | 12 ++++++++++++
1 file changed, 12 insertions(+)
(limited to 'sys')
diff --git a/sys/include/arch/amd64/cpu.h b/sys/include/arch/amd64/cpu.h
index 1968569..ee9bad7 100644
--- a/sys/include/arch/amd64/cpu.h
+++ b/sys/include/arch/amd64/cpu.h
@@ -138,6 +138,18 @@ amd64_write_cr4(uint64_t val)
__ASMV("mov %0, %%cr4" :: "r" (val) : "memory");
}
+static inline void
+amd64_fxsave(void *area)
+{
+ __ASMV("fxsave (%0)" :: "r" (area) : "memory");
+}
+
+static inline void
+amd64_fxrstor(void *area)
+{
+ __ASMV("fxrstor (%0)" :: "r" (area) : "memory");
+}
+
struct cpu_info *amd64_this_cpu(void);
#endif /* !_AMD64_CPU_H_ */
--
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