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-rw-r--r--arch/powerpc/math-emu/soft-fp.h104
1 files changed, 104 insertions, 0 deletions
diff --git a/arch/powerpc/math-emu/soft-fp.h b/arch/powerpc/math-emu/soft-fp.h
new file mode 100644
index 000000000000..cca39598f873
--- /dev/null
+++ b/arch/powerpc/math-emu/soft-fp.h
@@ -0,0 +1,104 @@
+#ifndef SOFT_FP_H
+#define SOFT_FP_H
+
+#include "sfp-machine.h"
+
+#define _FP_WORKBITS 3
+#define _FP_WORK_LSB ((_FP_W_TYPE)1 << 3)
+#define _FP_WORK_ROUND ((_FP_W_TYPE)1 << 2)
+#define _FP_WORK_GUARD ((_FP_W_TYPE)1 << 1)
+#define _FP_WORK_STICKY ((_FP_W_TYPE)1 << 0)
+
+#ifndef FP_RND_NEAREST
+# define FP_RND_NEAREST 0
+# define FP_RND_ZERO 1
+# define FP_RND_PINF 2
+# define FP_RND_MINF 3
+#ifndef FP_ROUNDMODE
+# define FP_ROUNDMODE FP_RND_NEAREST
+#endif
+#endif
+
+#define _FP_ROUND_NEAREST(wc, X) \
+({ int __ret = 0; \
+ int __frac = _FP_FRAC_LOW_##wc(X) & 15; \
+ if (__frac & 7) { \
+ __ret = EFLAG_INEXACT; \
+ if ((__frac & 7) != _FP_WORK_ROUND) \
+ _FP_FRAC_ADDI_##wc(X, _FP_WORK_ROUND); \
+ else if (__frac & _FP_WORK_LSB) \
+ _FP_FRAC_ADDI_##wc(X, _FP_WORK_ROUND); \
+ } \
+ __ret; \
+})
+
+#define _FP_ROUND_ZERO(wc, X) \
+({ int __ret = 0; \
+ if (_FP_FRAC_LOW_##wc(X) & 7) \
+ __ret = EFLAG_INEXACT; \
+ __ret; \
+})
+
+#define _FP_ROUND_PINF(wc, X) \
+({ int __ret = EFLAG_INEXACT; \
+ if (!X##_s && (_FP_FRAC_LOW_##wc(X) & 7)) \
+ _FP_FRAC_ADDI_##wc(X, _FP_WORK_LSB); \
+ else __ret = 0; \
+ __ret; \
+})
+
+#define _FP_ROUND_MINF(wc, X) \
+({ int __ret = EFLAG_INEXACT; \
+ if (X##_s && (_FP_FRAC_LOW_##wc(X) & 7)) \
+ _FP_FRAC_ADDI_##wc(X, _FP_WORK_LSB); \
+ else __ret = 0; \
+ __ret; \
+})
+
+#define _FP_ROUND(wc, X) \
+({ int __ret = 0; \
+ switch (FP_ROUNDMODE) \
+ { \
+ case FP_RND_NEAREST: \
+ __ret |= _FP_ROUND_NEAREST(wc,X); \
+ break; \
+ case FP_RND_ZERO: \
+ __ret |= _FP_ROUND_ZERO(wc,X); \
+ break; \
+ case FP_RND_PINF: \
+ __ret |= _FP_ROUND_PINF(wc,X); \
+ break; \
+ case FP_RND_MINF: \
+ __ret |= _FP_ROUND_MINF(wc,X); \
+ break; \
+ }; \
+ __ret; \
+})
+
+#define FP_CLS_NORMAL 0
+#define FP_CLS_ZERO 1
+#define FP_CLS_INF 2
+#define FP_CLS_NAN 3
+
+#define _FP_CLS_COMBINE(x,y) (((x) << 2) | (y))
+
+#include "op-1.h"
+#include "op-2.h"
+#include "op-4.h"
+#include "op-common.h"
+
+/* Sigh. Silly things longlong.h needs. */
+#define UWtype _FP_W_TYPE
+#define W_TYPE_SIZE _FP_W_TYPE_SIZE
+
+typedef int SItype __attribute__((mode(SI)));
+typedef int DItype __attribute__((mode(DI)));
+typedef unsigned int USItype __attribute__((mode(SI)));
+typedef unsigned int UDItype __attribute__((mode(DI)));
+#if _FP_W_TYPE_SIZE == 32
+typedef unsigned int UHWtype __attribute__((mode(HI)));
+#elif _FP_W_TYPE_SIZE == 64
+typedef USItype UHWtype;
+#endif
+
+#endif