From 776f6d71b0592a1eb6827d1929ad5a2ea71d0637 Mon Sep 17 00:00:00 2001
From: Alex <enderice2@users.noreply.github.com>
Date: Sun, 6 Nov 2022 04:55:01 +0200
Subject: [PATCH] implemented fxsr

---
 Architecture/amd64/cpu/fxsr.asm | 11 +++++++++++
 Architecture/i686/cpu/fxsr.asm  | 11 +++++++++++
 include/cpu.hpp                 |  7 +++++++
 3 files changed, 29 insertions(+)
 create mode 100644 Architecture/amd64/cpu/fxsr.asm
 create mode 100644 Architecture/i686/cpu/fxsr.asm

diff --git a/Architecture/amd64/cpu/fxsr.asm b/Architecture/amd64/cpu/fxsr.asm
new file mode 100644
index 0000000..b91d269
--- /dev/null
+++ b/Architecture/amd64/cpu/fxsr.asm
@@ -0,0 +1,11 @@
+[bits 64]
+
+[global _amd64_fxsave]
+_amd64_fxsave:
+	fxsave [rdi]
+	ret
+
+[global _amd64_fxrstor]
+_amd64_fxrstor:
+	fxrstor [rdi]
+	ret
diff --git a/Architecture/i686/cpu/fxsr.asm b/Architecture/i686/cpu/fxsr.asm
new file mode 100644
index 0000000..47e40d7
--- /dev/null
+++ b/Architecture/i686/cpu/fxsr.asm
@@ -0,0 +1,11 @@
+[bits 64]
+
+[global _i386_fxsave]
+_i386_fxsave:
+	fxsave [edi]
+	ret
+
+[global _i386_fxrstor]
+_i386_fxrstor:
+	fxrstor [edi]
+	ret
diff --git a/include/cpu.hpp b/include/cpu.hpp
index 4f0ad78..95b055d 100644
--- a/include/cpu.hpp
+++ b/include/cpu.hpp
@@ -5,6 +5,11 @@
 
 #include <cstring>
 
+extern "C" void _amd64_fxsave(char *Buffer);
+extern "C" void _amd64_fxrstor(char *Buffer);
+extern "C" void _i386_fxsave(char *Buffer);
+extern "C" void _i386_fxrstor(char *Buffer);
+
 #define x86_CPUID_VENDOR_OLDAMD "AMDisbetter!" /* Early engineering samples of AMD K5 processor */
 #define x86_CPUID_VENDOR_AMD "AuthenticAMD"
 #define x86_CPUID_VENDOR_INTEL "GenuineIntel"
@@ -1580,6 +1585,7 @@ namespace CPU
         __attribute__((no_stack_protector)) static inline void fxsave(char *FXSaveArea)
         {
 #if defined(__amd64__)
+            _amd64_fxsave(FXSaveArea);
             // asmv("fxsaveq (%0)"
             //      :
             //      : "r"(FXSaveArea)
@@ -1590,6 +1596,7 @@ namespace CPU
         __attribute__((no_stack_protector)) static inline void fxrstor(char *FXRstorArea)
         {
 #if defined(__amd64__)
+            _amd64_fxrstor(FXRstorArea);
             // asmv("fxrstorq (%0)"
             //      :
             //      : "r"(FXRstorArea)