powerpc: move math-emu over to arch/powerpc

[pandora-kernel.git] / arch / powerpc / math-emu / single.h

diff --git a/arch/powerpc/math-emu/single.h b/arch/powerpc/math-emu/single.h
new file mode 100644 (file)
index 0000000..f19d994
--- /dev/null
+++ b/arch/powerpc/math-emu/single.h
@@ -0,0 +1,66 @@
+/*
+ * Definitions for IEEE Single Precision
+ */
+
+#if _FP_W_TYPE_SIZE < 32
+#error "Here's a nickel kid.  Go buy yourself a real computer."
+#endif
+
+#define _FP_FRACBITS_S         24
+#define _FP_FRACXBITS_S                (_FP_W_TYPE_SIZE - _FP_FRACBITS_S)
+#define _FP_WFRACBITS_S                (_FP_WORKBITS + _FP_FRACBITS_S)
+#define _FP_WFRACXBITS_S       (_FP_W_TYPE_SIZE - _FP_WFRACBITS_S)
+#define _FP_EXPBITS_S          8
+#define _FP_EXPBIAS_S          127
+#define _FP_EXPMAX_S           255
+#define _FP_QNANBIT_S          ((_FP_W_TYPE)1 << (_FP_FRACBITS_S-2))
+#define _FP_IMPLBIT_S          ((_FP_W_TYPE)1 << (_FP_FRACBITS_S-1))
+#define _FP_OVERFLOW_S         ((_FP_W_TYPE)1 << (_FP_WFRACBITS_S))
+
+/* The implementation of _FP_MUL_MEAT_S and _FP_DIV_MEAT_S should be
+   chosen by the target machine.  */
+
+union _FP_UNION_S
+{
+  float flt;
+  struct {
+#if __BYTE_ORDER == __BIG_ENDIAN
+    unsigned sign : 1;
+    unsigned exp  : _FP_EXPBITS_S;
+    unsigned frac : _FP_FRACBITS_S - (_FP_IMPLBIT_S != 0);
+#else
+    unsigned frac : _FP_FRACBITS_S - (_FP_IMPLBIT_S != 0);
+    unsigned exp  : _FP_EXPBITS_S;
+    unsigned sign : 1;
+#endif
+  } bits __attribute__((packed));
+};
+
+#define FP_DECL_S(X)           _FP_DECL(1,X)
+#define FP_UNPACK_RAW_S(X,val) _FP_UNPACK_RAW_1(S,X,val)
+#define FP_PACK_RAW_S(val,X)   _FP_PACK_RAW_1(S,val,X)
+
+#define FP_UNPACK_S(X,val)             \
+  do {                                 \
+    _FP_UNPACK_RAW_1(S,X,val);         \
+    _FP_UNPACK_CANONICAL(S,1,X);       \
+  } while (0)
+
+#define FP_PACK_S(val,X)               \
+  do {                                 \
+    _FP_PACK_CANONICAL(S,1,X);         \
+    _FP_PACK_RAW_1(S,val,X);           \
+  } while (0)
+
+#define FP_NEG_S(R,X)          _FP_NEG(S,1,R,X)
+#define FP_ADD_S(R,X,Y)                _FP_ADD(S,1,R,X,Y)
+#define FP_SUB_S(R,X,Y)                _FP_SUB(S,1,R,X,Y)
+#define FP_MUL_S(R,X,Y)                _FP_MUL(S,1,R,X,Y)
+#define FP_DIV_S(R,X,Y)                _FP_DIV(S,1,R,X,Y)
+#define FP_SQRT_S(R,X)         _FP_SQRT(S,1,R,X)
+
+#define FP_CMP_S(r,X,Y,un)     _FP_CMP(S,1,r,X,Y,un)
+#define FP_CMP_EQ_S(r,X,Y)     _FP_CMP_EQ(S,1,r,X,Y)
+
+#define FP_TO_INT_S(r,X,rsz,rsg)  _FP_TO_INT(S,1,r,X,rsz,rsg)
+#define FP_FROM_INT_S(X,r,rs,rt)  _FP_FROM_INT(S,1,X,r,rs,rt)