386BSD 0.0 development

Work on file usr/src/usr.bin/gcc/gnulib/longlong/longlong.h

Co-Authored-By: Lynne Greer Jolitz <ljolitz@cardio.ucsf.edu>
Synthesized-from: 386BSD-0.0/src

diff --git a/usr/src/usr.bin/gcc/gnulib/longlong/longlong.h b/usr/src/usr.bin/gcc/gnulib/longlong/longlong.h
new file mode 100644 (file)
index 0000000..83cb1df
--- /dev/null
+++ b/usr/src/usr.bin/gcc/gnulib/longlong/longlong.h
@@ -0,0 +1,67 @@
+/* More subroutines needed by GCC output code on some machines.  */
+/* Compile this one with gcc.  */
+
+#include "config.h"
+#include <stddef.h>
+
+#ifndef SItype
+#define SItype long int
+#endif
+
+/* long long ints are pairs of long ints in the order determined by
+   WORDS_BIG_ENDIAN.  */
+
+#ifdef WORDS_BIG_ENDIAN
+  struct longlong {long high, low;};
+#else
+  struct longlong {long low, high;};
+#endif
+
+/* We need this union to unpack/pack longlongs, since we don't have
+   any arithmetic yet.  Incoming long long parameters are stored
+   into the `ll' field, and the unpacked result is read from the struct
+   longlong.  */
+
+typedef union
+{
+  struct longlong s;
+  long long ll;
+  SItype i[2];
+  unsigned SItype ui[2];
+} long_long;
+
+/* Internally, long long ints are strings of unsigned shorts in the
+   order determined by BYTES_BIG_ENDIAN.  */
+
+#define B 0x10000
+#define low16 (B - 1)
+
+#ifdef BYTES_BIG_ENDIAN
+
+/* Note that HIGH and LOW do not describe the order
+   of words in a long long.  They describe the order of words
+   in vectors ordered according to the byte order.  */
+
+#define HIGH 0
+#define LOW 1
+
+#define big_end(n)     0 
+#define little_end(n)  ((n) - 1)
+#define next_msd(i)    ((i) - 1)
+#define next_lsd(i)    ((i) + 1)
+#define is_not_msd(i,n)        ((i) >= 0)
+#define is_not_lsd(i,n)        ((i) < (n))
+
+#else
+
+#define LOW 0
+#define HIGH 1
+
+#define big_end(n)     ((n) - 1)
+#define little_end(n)  0 
+#define next_msd(i)    ((i) + 1)
+#define next_lsd(i)    ((i) - 1)
+#define is_not_msd(i,n)        ((i) < (n))
+#define is_not_lsd(i,n)        ((i) >= 0)
+
+#endif