Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / ipxe / src / include / ipxe / umalloc.h

diff --git a/qemu/roms/ipxe/src/include/ipxe/umalloc.h b/qemu/roms/ipxe/src/include/ipxe/umalloc.h
new file mode 100644 (file)
index 0000000..4b25e18
--- /dev/null
+++ b/qemu/roms/ipxe/src/include/ipxe/umalloc.h
@@ -0,0 +1,69 @@
+#ifndef _IPXE_UMALLOC_H
+#define _IPXE_UMALLOC_H
+
+/**
+ * @file
+ *
+ * User memory allocation
+ *
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+#include <ipxe/api.h>
+#include <config/umalloc.h>
+#include <ipxe/uaccess.h>
+
+/**
+ * Provide a user memory allocation API implementation
+ *
+ * @v _prefix          Subsystem prefix
+ * @v _api_func                API function
+ * @v _func            Implementing function
+ */
+#define PROVIDE_UMALLOC( _subsys, _api_func, _func ) \
+       PROVIDE_SINGLE_API ( UMALLOC_PREFIX_ ## _subsys, _api_func, _func )
+
+/* Include all architecture-independent I/O API headers */
+#include <ipxe/efi/efi_umalloc.h>
+#include <ipxe/linux/linux_umalloc.h>
+
+/* Include all architecture-dependent I/O API headers */
+#include <bits/umalloc.h>
+
+/**
+ * Reallocate external memory
+ *
+ * @v userptr          Memory previously allocated by umalloc(), or UNULL
+ * @v new_size         Requested size
+ * @ret userptr                Allocated memory, or UNULL
+ *
+ * Calling realloc() with a new size of zero is a valid way to free a
+ * memory block.
+ */
+userptr_t urealloc ( userptr_t userptr, size_t new_size );
+
+/**
+ * Allocate external memory
+ *
+ * @v size             Requested size
+ * @ret userptr                Memory, or UNULL
+ *
+ * Memory is guaranteed to be aligned to a page boundary.
+ */
+static inline __always_inline userptr_t umalloc ( size_t size ) {
+       return urealloc ( UNULL, size );
+}
+
+/**
+ * Free external memory
+ *
+ * @v userptr          Memory allocated by umalloc(), or UNULL
+ *
+ * If @c ptr is UNULL, no action is taken.
+ */
+static inline __always_inline void ufree ( userptr_t userptr ) {
+       urealloc ( userptr, 0 );
+}
+
+#endif /* _IPXE_UMALLOC_H */