refactor: Optimize the signal context overhead

[lunaix-os.git] / lunaix-os / includes / hal / cpu.h

diff --git a/lunaix-os/includes/hal/cpu.h b/lunaix-os/includes/hal/cpu.h
index 93805d8b981d4220feba2d1d9d6269ff2428de00..3b77c7eb12aeca27205d8406f738ae5c8a17f0c2 100644 (file)
--- a/lunaix-os/includes/hal/cpu.h
+++ b/lunaix-os/includes/hal/cpu.h
@@ -60,6 +60,14 @@ cpu_rcr3()
     return val;
 }
 
+static inline reg32
+cpu_rcr4()
+{
+    ptr_t val;
+    asm volatile("movl %%cr4,%0" : "=r"(val));
+    return val;
+}
+
 static inline reg32
 cpu_reflags()
 {
@@ -129,4 +137,10 @@ cpu_rdmsr(u32_t msr_idx, u32_t* reg_high, u32_t* reg_low);
 void
 cpu_wrmsr(u32_t msr_idx, u32_t reg_high, u32_t reg_low);
 
+static inline void
+cpu_ldvmspace(ptr_t vms)
+{
+    cpu_lcr3(vms);
+}
+
 #endif
\ No newline at end of file