Move source files to src/, add Makefile, fix all build and linkage errors, etc.

exosphere/src/smc_api.h

@@ -0,0 +1,21 @@
+#ifndef EXOSPHERE_SMC_API_H
+#define EXOSPHERE_SMC_API_H
+
+#include <stdint.h>
+
+#define SMC_HANDLER_USER 0
+#define SMC_HANDLER_PRIV 1
+
+typedef struct {
+    uint64_t X[8];
+} smc_args_t;
+
+void set_priv_smc_in_progress(void);
+void clear_priv_smc_in_progress(void);
+
+uintptr_t get_smc_core012_stack_address(void);
+uintptr_t get_exception_entry_stack_address(unsigned int core_id);
+
+void call_smc_handler(unsigned int handler_id, smc_args_t *args);
+
+#endif