auto import from //depot/cupcake/@135843

1 files changed, 52 insertions, 0 deletions

diff --git a/qemu_file.h b/qemu_file.h
new file mode 100644
index 0000000..682e092
--- /dev/null
+++ b/qemu_file.h
@@ -0,0 +1,52 @@
+#ifndef _QEMU_FILE_H
+#define _QEMU_FILE_H
+
+#include "hw/hw.h"
+
+typedef enum {
+    Q_FIELD_END,          /* mark end of field list */
+    Q_FIELD_BYTE,         /* for 1-byte fields */
+    Q_FIELD_INT16,        /* for 2-byte fields */
+    Q_FIELD_INT32,        /* for 4-byte fields */
+    Q_FIELD_INT64,        /* for 8-byte fields */
+    Q_FIELD_BUFFER,       /* for buffer fields */
+    Q_FIELD_BUFFER_SIZE,  /* to specify the size of buffers */
+
+#if TARGET_LONG_BITS == 64
+    Q_FIELD_TL = Q_FIELD_INT64,           /* target long, either 4 or 8 bytes */
+#else
+    Q_FIELD_TL = Q_FIELD_INT32
+#endif
+
+} QFieldType;
+
+typedef struct {
+    QFieldType  type : 16; /* field type */
+    uint16_t    offset;    /* offset of field in structure */
+} QField;
+
+#define  QFIELD_BEGIN(name)  \
+    static const QField    name[] = {
+
+#define  _QFIELD_(t, f)    { t, offsetof(QFIELD_STRUCT,f) }
+#define  QFIELD_BYTE(f)   _QFIELD_(Q_FIELD_BYTE, f)
+#define  QFIELD_INT16(f)  _QFIELD_(Q_FIELD_INT16, f)
+#define  QFIELD_INT32(f)  _QFIELD_(Q_FIELD_INT32, f)
+#define  QFIELD_INT64(f)  _QFIELD_(Q_FIELD_INT64, f)
+#define  QFIELD_TL(f)     _QFIELD_(Q_FIELD_TL, f)
+
+#define  _QFIELD_SIZEOF(f)   sizeof(((QFIELD_STRUCT*)0)->f)
+
+#define  QFIELD_BUFFER(f)  \
+    _QFIELD_(Q_FIELD_BUFFER, f), \
+    { Q_FIELD_BUFFER_SIZE, (uint16_t)(_QFIELD_SIZEOF(f) >> 16) }, \
+    { Q_FIELD_BUFFER_SIZE, (uint16_t) _QFIELD_SIZEOF(f) }
+
+#define  QFIELD_END           \
+        { Q_FIELD_END, 0 },   \
+    };
+
+extern void  qemu_put_struct(QEMUFile*  f, const QField*  fields, const void*  s);
+extern int   qemu_get_struct(QEMUFile*  f, const QField*  fields, void*  s);
+
+#endif /* _QEMU_FILE_H */