Draft: lab 3 irq wtf

2025-03-24 10:48:35 +08:00
parent 6156975775
commit c5fc7e3102
19 changed files with 386 additions and 142 deletions
--- a/kernel/lib/exec.c
+++ b/kernel/lib/exec.c
@@ -0,0 +1,16 @@
+#include <exec.h>
+#include <utils.h>
+
+void user_exec(void *text, void *sp)
+{
+  // enable core timer
+  uint64_t cntkctl_el1 = 0x0;
+  R_SYSREG(cntkctl_el1, cntkctl_el1);
+  W_SYSREG(cntkctl_el1, cntkctl_el1 | 1);
+  W_SYSREG(cntp_ctl_el0, 1);
+  
+  W_SYSREG(spsr_el1, 0);
+  W_SYSREG(elr_el1, text);
+  W_SYSREG(sp_el0, sp);
+  asm volatile("eret");
+}