2 files changed, 28 insertions, 0 deletions
diff --git a/src/sys/arch/amd64/cpu/cpu_mp.c b/src/sys/arch/amd64/cpu/cpu_mp.c
index 8d84b1f..3483e4a 100644
--- a/src/sys/arch/amd64/cpu/cpu_mp.c
+++ b/src/sys/arch/amd64/cpu/cpu_mp.c
@@ -79,6 +79,23 @@ ap_entry(struct limine_smp_info *)
     for (;;);
 }
 
+/*
+ * Get a specific core descriptor
+ */
+struct pcore *
+cpu_get(uint16_t index)
+{
+    if (index == 0) {
+        return &g_bsp;
+    }
+
+    if ((index - 1) >= ncores_up) {
+        index %= (ncores_up - 1);
+    }
+
+    return corelist[index - 1];
+}
+
 void
 bsp_ap_startup(void)
 {
diff --git a/src/sys/include/sys/cpuvar.h b/src/sys/include/sys/cpuvar.h
index 9a2dc4d..5820646 100644
--- a/src/sys/include/sys/cpuvar.h
+++ b/src/sys/include/sys/cpuvar.h
@@ -80,6 +80,17 @@ void cpu_conf(struct pcore *pcore);
 void cpu_init(struct pcore *pcore);
 
 /*
+ * Get a specific CPU descriptor using a logical
+ * ID number (`index') as a key
+ *
+ * @index: Index / logical ID of desired processor
+ *
+ * Returns a pointer to the core descriptor on success,
+ * otherwise NULL to represent failure.
+ */
+struct pcore *cpu_get(uint16_t index);
+
+/*
  * Get the current processing element (core) as
  * a 'pcore' descriptor.
  *