Squash commits for public release

2025-02-12 09:54:05 -05:00
commit 7118adc514
1108 changed files with 80873 additions and 0 deletions
--- a/kernel/include/platform/x86/registers.h
+++ b/kernel/include/platform/x86/registers.h
@@ -0,0 +1,65 @@
+#ifndef _KERNEL_PLATFORM_X86_REGISTERS_H
+#define _KERNEL_PLATFORM_X86_REGISTERS_H
+
+#include <libkern/types.h>
+
+extern uintptr_t read_ip();
+static inline uintptr_t read_cr2()
+{
+    uintptr_t val;
+    asm volatile("mov %%cr2, %0"
+                 : "=r"(val));
+    return val;
+}
+
+static inline uintptr_t read_cr3()
+{
+    uintptr_t val;
+    asm volatile("mov %%cr3, %0"
+                 : "=r"(val));
+    return val;
+}
+
+static inline uintptr_t read_sp()
+{
+    uintptr_t val;
+#ifdef BITS32
+    asm volatile("mov %%esp, %0"
+                 : "=r"(val));
+#else
+    asm volatile("mov %%rsp, %0"
+                 : "=r"(val));
+#endif
+    return val;
+}
+
+static inline uintptr_t read_bp()
+{
+    uintptr_t val;
+#ifdef BITS32
+    asm volatile("mov %%ebp, %0"
+                 : "=r"(val));
+#else
+    asm volatile("mov %%rbp, %0"
+                 : "=r"(val));
+#endif
+    return val;
+}
+
+static inline uintptr_t read_cr0()
+{
+    uintptr_t val;
+    asm volatile("mov %%cr0, %0"
+                 : "=r"(val));
+    return val;
+}
+
+static inline void write_cr0(uintptr_t val)
+{
+    asm volatile("mov %0, %%cr0"
+                 :
+                 : "r"(val)
+                 : "memory");
+}
+
+#endif /* _KERNEL_PLATFORM_X86_REGISTERS_H */