1 files changed, 63 insertions, 0 deletions

diff --git a/arch/s390/math-emu/sfp-util.h b/arch/s390/math-emu/sfp-util.h
new file mode 100644
index 000000000000..ab556b600f73
--- /dev/null
+++ b/arch/s390/math-emu/sfp-util.h
@@ -0,0 +1,63 @@
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/types.h>
+#include <asm/byteorder.h>
+
+#define add_ssaaaa(sh, sl, ah, al, bh, bl) ({           \
+        unsigned int __sh = (ah);                       \
+        unsigned int __sl = (al);                       \
+        __asm__ ("   alr  %1,%3\n"                      \
+                 "   brc  12,0f\n"                      \
+                 "   ahi  %0,1\n"                       \
+                 "0: alr  %0,%2"                        \
+                 : "+&d" (__sh), "+d" (__sl)            \
+                 : "d" (bh), "d" (bl) : "cc" );         \
+        (sh) = __sh;                                    \
+        (sl) = __sl;                                    \
+})
+
+#define sub_ddmmss(sh, sl, ah, al, bh, bl) ({           \
+       unsigned int __sh = (ah);                        \
+       unsigned int __sl = (al);                        \
+       __asm__ ("   slr  %1,%3\n"                       \
+                "   brc  3,0f\n"                        \
+                "   ahi  %0,-1\n"                       \
+                "0: slr  %0,%2"                         \
+                : "+&d" (__sh), "+d" (__sl)             \
+                : "d" (bh), "d" (bl) : "cc" );          \
+       (sh) = __sh;                                     \
+       (sl) = __sl;                                     \
+})
+
+/* a umul b = a mul b + (a>=2<<31) ? b<<32:0 + (b>=2<<31) ? a<<32:0 */
+#define umul_ppmm(wh, wl, u, v) ({                      \
+        unsigned int __wh = u;                          \
+        unsigned int __wl = v;                          \
+        __asm__ ("   ltr  1,%0\n"                       \
+                 "   mr   0,%1\n"                       \
+                 "   jnm  0f\n"                         \
+                 "   alr  0,%1\n"                       \
+                 "0: ltr  %1,%1\n"                      \
+                 "   jnm  1f\n"                         \
+                 "   alr  0,%0\n"                       \
+                 "1: lr   %0,0\n"                       \
+                 "   lr   %1,1\n"                       \
+                 : "+d" (__wh), "+d" (__wl)             \
+                 : : "0", "1", "cc" );                  \
+        wh = __wh;                                      \
+        wl = __wl;                                      \
+})
+
+#define udiv_qrnnd(q, r, n1, n0, d)                     \
+  do { unsigned long __r;                               \
+    (q) = __udiv_qrnnd (&__r, (n1), (n0), (d));         \
+    (r) = __r;                                          \
+  } while (0)
+extern unsigned long __udiv_qrnnd (unsigned long *, unsigned long,
+                                   unsigned long , unsigned long);
+
+#define UDIV_NEEDS_NORMALIZATION 0
+
+#define abort() return 0
+
+#define __BYTE_ORDER __BIG_ENDIAN