dead@root

2024-05-25 19:20:33 +03:00
commit ea8f6b4ce0
39 changed files with 1769 additions and 0 deletions
--- a/user_space.c
+++ b/user_space.c
@@ -0,0 +1,22 @@
+void enter_user_space()
+{
+    asm volatile("cli; \
+                  mov $0x23, %ax; \
+                  mov %ax, %ds; \
+                  mov %ax, %es; \
+                  mov %ax, %fs; \
+                  mov %ax, %gs; \
+                  mov %esp, %eax; \
+                  push $0x23; \
+                  push %eax; \
+                  pushf; \
+                  pop %eax; \
+                  or $0x200, %eax; \
+                  push %eax; \
+                  push $0x1B; \
+                  push $user_code_entry; \
+                  iret; \
+                  user_code_entry: \
+                  call main; \
+                  ");
+}