Draft: lab 5 failed

kernel/lib/exception.c

@@ -3,8 +3,10 @@
 #include <stddef.h>
 #include <logger.h>
 #include <utils.h>
+#include <syscall.h>
+#include <interrupt.h>
 
-void init_exception()
+void exception_init()
 {
   asm volatile(
     "adr x0, exception_vector_table" ENDL
@@ -18,11 +20,10 @@ void not_implemented_handler()
   DEBUG_EXCEP("not implemented caught");
 }
 
-void synchronous_handler()
+void synchronous_handler(trapframe_t *regs)
 {
-  static int poop = 0;
-  if (poop++ > 10)
-    exit(ERR_ADMINKILL);
+  disable_interrupt();
+
   DEBUG_EXCEP("synchronous caught");
   uint64_t x0 = 0x0;
   R_REG(x0, x0);
@@ -36,5 +37,12 @@ void synchronous_handler()
   uint64_t esr_el1 = 0x0;
   R_SYSREG(esr_el1, esr_el1);
 
-  LOG(x0); LOG(spsr_el1); LOG(elr_el1); DEBUG_EXCEP(esr_el1);
+  LOG(x0); LOG(spsr_el1); LOG(elr_el1); DEBUG_EXCEP(esr_el1)
+
+  switch ((esr_el1 >> 26) & 0x7f) {
+  case 0b010101:
+    syscall_handler(regs);
+    break;
+  default:
+  }
 }