Add qemu 2.4.0

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

diff --git a/qemu/roms/ipxe/src/include/ipxe/vsprintf.h b/qemu/roms/ipxe/src/include/ipxe/vsprintf.h
new file mode 100644 (file)
index 0000000..c48c97a
--- /dev/null
+++ b/qemu/roms/ipxe/src/include/ipxe/vsprintf.h
@@ -0,0 +1,74 @@
+#ifndef _IPXE_VSPRINTF_H
+#define _IPXE_VSPRINTF_H
+
+/** @file
+ *
+ * printf() and friends
+ *
+ * Etherboot's printf() functions understand the following subset of
+ * the standard C printf()'s format specifiers:
+ *
+ *     - Flag characters
+ *             - '#'           - Alternate form (i.e. "0x" prefix)
+ *             - '0'           - Zero-pad
+ *     - Field widths
+ *     - Length modifiers
+ *             - 'hh'          - Signed / unsigned char
+ *             - 'h'           - Signed / unsigned short
+ *             - 'l'           - Signed / unsigned long
+ *             - 'll'          - Signed / unsigned long long
+ *             - 'z'           - Signed / unsigned size_t
+ *     - Conversion specifiers
+ *             - 'd'           - Signed decimal
+ *             - 'x','X'       - Unsigned hexadecimal
+ *             - 'c'           - Character
+ *             - 's'           - String
+ *             - 'p'           - Pointer
+ *
+ * Hexadecimal numbers are always zero-padded to the specified field
+ * width (if any); decimal numbers are always space-padded.  Decimal
+ * long longs are not supported.
+ *
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+#include <stdint.h>
+#include <stdarg.h>
+#include <stdio.h>
+
+/**
+ * A printf context
+ *
+ * Contexts are used in order to be able to share code between
+ * vprintf() and vsnprintf(), without requiring the allocation of a
+ * buffer for vprintf().
+ */
+struct printf_context {
+       /**
+        * Character handler
+        *
+        * @v ctx       Context
+        * @v c         Character
+        *
+        * This method is called for each character written to the
+        * formatted string.
+        */
+       void ( * handler ) ( struct printf_context *ctx, unsigned int c );
+       /** Length of formatted string
+        *
+        * When handler() is called, @len will be set to the number of
+        * characters written so far (i.e. zero for the first call to
+        * handler()).
+        */
+       size_t len;
+};
+
+extern size_t vcprintf ( struct printf_context *ctx, const char *fmt,
+                        va_list args );
+extern int vssnprintf ( char *buf, ssize_t ssize, const char *fmt,
+                       va_list args );
+extern int __attribute__ (( format ( printf, 3, 4 ) ))
+ssnprintf ( char *buf, ssize_t ssize, const char *fmt, ... );
+
+#endif /* _IPXE_VSPRINTF_H */