1 files changed, 80 insertions, 0 deletions
diff --git a/include/gmputil.h b/include/gmputil.h
new file mode 100644
index 0000000..c524ace
--- /dev/null
+++ b/include/gmputil.h
@@ -0,0 +1,80 @@
+#ifndef NFTABLES_GMPUTIL_H
+#define NFTABLES_GMPUTIL_H
+
+#ifdef HAVE_LIBGMP
+#include <gmp.h>
+#else
+#include <mini-gmp.h>
+#include <stdarg.h>
+#include <stdio.h>
+/* mini-gmp doesn't come with gmp_vfprintf, so we use our own minimal variant */
+extern int mpz_vfprintf(FILE *fp, const char *format, va_list args);
+#define gmp_vfprintf mpz_vfprintf
+#endif
+
+#include <inttypes.h>
+#include <asm/byteorder.h>
+
+enum mpz_word_order {
+	MPZ_MSWF		= 1,
+	MPZ_LSWF		= -1,
+};
+
+#ifdef __LITTLE_ENDIAN_BITFIELD
+#define MPZ_HWO	MPZ_LSWF
+#elif defined(__BIG_ENDIAN_BITFIELD)
+#define MPZ_HWO MPZ_MSWF
+#else
+#error "byteorder undefined"
+#endif
+
+enum mpz_byte_order {
+	MPZ_BIG_ENDIAN		= 1,
+	MPZ_HOST_ENDIAN		= 0,
+	MPZ_LITTLE_ENDIAN	= -1,
+};
+
+extern void mpz_bitmask(mpz_t rop, unsigned int width);
+extern void mpz_init_bitmask(mpz_t rop, unsigned int width);
+extern void mpz_prefixmask(mpz_t rop, unsigned int width, unsigned int prefix_len);
+
+extern void mpz_lshift_ui(mpz_t rop, unsigned int n);
+extern void mpz_rshift_ui(mpz_t rop, unsigned int n);
+
+extern uint64_t mpz_get_uint64(const mpz_t op);
+extern uint32_t mpz_get_uint32(const mpz_t op);
+extern uint16_t mpz_get_uint16(const mpz_t op);
+extern uint8_t mpz_get_uint8(const mpz_t op);
+
+extern uint32_t mpz_get_be32(const mpz_t op);
+extern uint16_t mpz_get_be16(const mpz_t op);
+
+enum byteorder;
+extern void *__mpz_export_data(void *data, const mpz_t op,
+			       enum byteorder byteorder, unsigned int len);
+extern void __mpz_import_data(mpz_t rop, const void *data,
+			      enum byteorder byteorder, unsigned int len);
+extern void __mpz_switch_byteorder(mpz_t rop, unsigned int len);
+
+#include <assert.h>
+#include <datatype.h>
+
+#define mpz_export_data(data, op, byteorder, len)		\
+{								\
+	assert(len > 0);					\
+	__mpz_export_data(data, op, byteorder, len); 		\
+}
+
+#define mpz_import_data(rop, data, byteorder, len)		\
+{								\
+	assert(len > 0);					\
+	__mpz_import_data(rop, data, byteorder, len);		\
+}
+
+#define mpz_switch_byteorder(rop, len)				\
+{								\
+	assert(len > 0);					\
+	__mpz_switch_byteorder(rop, len);			\
+}
+
+#endif /* NFTABLES_GMPUTIL_H */