Draft: lab 3 irq wtf

kernel/include/exception.h

@@ -0,0 +1,5 @@
+#pragma once
+
+void init_exception(void);
+void not_implemented_handler(void);
+void synchronous_handler(void);

kernel/include/exec.h

@@ -0,0 +1,3 @@
+#pragma once
+
+void user_exec(void *text, void *sp);

kernel/include/interrupt.h

@@ -0,0 +1,17 @@
+#pragma once
+
+#include <stddef.h>
+
+#define CORE0_TIMER_IRQ_CTRL ((volatile uint32_t *)0x40000040)
+#define CORE0_IRQ_SOURCE     ((volatile uint32_t *)0x40000060)
+
+enum :uint32_t {
+  CNTPNSIRQ_INT = ((uint32_t)1 << 1),
+  GPU_INT       = ((uint32_t)1 << 8)
+};
+
+void init_interrupt(void);
+void irq_handler(void);
+
+void enable_interrupt(void);
+void disable_interrupt(void);

kernel/include/shell.h

@@ -1,15 +1,7 @@
 #pragma once
 
-#include <initrd.h>
 #include <stddef.h>
-
-void help(void);
-void hello(void);
-void hwinfo(void);
-void memalloc(size_t size);
-void ls(file_node_t *root);
-void cat(file_node_t *root, const char *filename);
-void reboot(void);
+#include <initrd.h>
 
 int // is continue
 shell(file_node_t *);

kernel/include/utils.h

@@ -43,8 +43,14 @@ void exit(int);
     : [a] "=r" (ret) \
   )
 
-#define W_SYSREG(val, reg) \
+#define W_SYSREG(reg, val) \
   asm volatile( \
     "msr " #reg ", %[a]" \
-    : [a] "r" (val) \
+    :: [a] "r" (val) \
+  )
+
+#define R_REG(ret, reg) \
+  asm volatile( \
+    "mov %[a], " #reg \
+    : [a] "=r" (ret) \
   )