1 files changed, 70 insertions, 0 deletions
diff --git a/kexec/kexec-xen.h b/kexec/kexec-xen.h
new file mode 100644
index 0000000..ffb8743
--- /dev/null
+++ b/kexec/kexec-xen.h
@@ -0,0 +1,70 @@
+#ifndef KEXEC_XEN_H
+#define KEXEC_XEN_H
+
+#ifdef HAVE_LIBXENCTRL
+#include <xenctrl.h>
+
+#ifdef CONFIG_LIBXENCTRL_DL
+#include <dlfcn.h>
+
+/* The handle from dlopen(), needed by dlsym(), dlclose() */
+extern void *xc_dlhandle;
+
+/* Wrappers around xc_interface_open/close() to insert dlopen/dlclose() */
+xc_interface *__xc_interface_open(xentoollog_logger *logger,
+				  xentoollog_logger *dombuild_logger,
+				  unsigned open_flags);
+int __xc_interface_close(xc_interface *xch);
+
+/* GCC expression statements for evaluating dlsym() */
+#define __xc_call(dtype, name, args...) \
+( \
+	{ dtype value; \
+	typedef dtype (*func_t)(xc_interface *, ...); \
+	func_t func = dlsym(xc_dlhandle, #name); \
+	value = func(args); \
+	value; } \
+)
+#define __xc_data(dtype, name) \
+( \
+	{ dtype *value = (dtype *)dlsym(xc_dlhandle, #name); value; } \
+)
+
+/* The wrappers around utilized xenctrl.h functions */
+#define xc_interface_open(a, b, c)  \
+	__xc_interface_open(a, b, c)
+#define xc_interface_close(a) \
+	__xc_interface_close(a)
+#define xc_version(args...) \
+	__xc_call(int, xc_version, args)
+#define xc_get_max_cpus(args...) \
+	__xc_call(int, xc_get_max_cpus, args)
+#define xc_get_machine_memory_map(args...) \
+	__xc_call(int, xc_get_machine_memory_map, args)
+#define xc_kexec_get_range(args...) \
+	__xc_call(int, xc_kexec_get_range, args)
+#define xc_kexec_load(args...) \
+	__xc_call(int, xc_kexec_load, args)
+#define xc_kexec_unload(args...) \
+	__xc_call(int, xc_kexec_unload, args)
+#define xc_kexec_status(args...) \
+	__xc_call(int, xc_kexec_status, args)
+#define xc_kexec_exec(args...) \
+	__xc_call(int, xc_kexec_exec, args)
+#define xc_hypercall_buffer_array_create(args...) \
+	__xc_call(xc_hypercall_buffer_array_t *, xc_hypercall_buffer_array_create, args)
+#define xc__hypercall_buffer_alloc_pages(args...) \
+	__xc_call(void *, xc__hypercall_buffer_alloc_pages, args)
+#define xc__hypercall_buffer_free_pages(args...) \
+	__xc_call(void  , xc__hypercall_buffer_free_pages, args)
+#define xc__hypercall_buffer_array_alloc(args...) \
+	__xc_call(void *, xc__hypercall_buffer_array_alloc, args)
+#define xc__hypercall_buffer_array_get(args...) \
+	__xc_call(void *, xc__hypercall_buffer_array_get, args)
+#define xc_hypercall_buffer_array_destroy(args...) \
+	__xc_call(void *, xc_hypercall_buffer_array_destroy, args)
+
+#endif /* CONFIG_LIBXENCTRL_DL */
+#endif /* HAVE_LIBXENCTRL */
+
+#endif /* KEXEC_XEN_H */