cpu: Add initial bring-up and debug logic

Signed-off-by: Ian Moffett <ian@osmora.org>

1 files changed, 29 insertions, 4 deletions

diff --git a/emux64/src/include/cpu/cpu.h b/emux64/src/include/cpu/cpu.h
index 04b2a9f..9b045c9 100644
--- a/emux64/src/include/cpu/cpu.h
+++ b/emux64/src/include/cpu/cpu.h
@@ -38,6 +38,14 @@
 #include <stdint.h>
 #include <stddef.h>
 
+/* Bring up area physical base */
+#define CPU_BUA_PBASE 0xFFF00000
+
+/* Register type counts */
+#define N_GPREG    16
+#define N_FLOATREG 7
+#define N_DUBREG   7
+
 /*
  * Represents a single unit of execution
  *
@@ -47,9 +55,9 @@
  * @pc: Program counter
  */
 struct osmx_core {
-    uint64_t xn[16];
-    float fn[7];
-    double dn[7];
+    uint64_t xn[N_GPREG];
+    float fn[N_FLOATREG];
+    double dn[N_DUBREG];
     uintptr_t pc;
 };
 
@@ -60,7 +68,24 @@ struct osmx_core {
  * TODO: Dynamically allocate cores
  */
 struct osmx_cpu {
-    struct osmx_core[1];
+    struct osmx_core cores[1];
 };
 
+/*
+ * Bring the CPU to an initial reset state
+ *
+ * @core: Core to bring to reset state
+ *
+ * Returns zero on success
+ */
+int cpu_reset(struct osmx_core *core);
+
+/*
+ * Dump the registers to the console for debugging
+ * purposes
+ *
+ * @core: Core to dump
+ */
+void cpu_dump(struct osmx_core *core);
+
 #endif  /* !CPU_CPU_H */