mediaop.isa (6560:323d48647000) mediaop.isa (6562:571fd8d89903)
1/// Copyright (c) 2009 The Regents of The University of Michigan
2// All rights reserved.
3//
4// Redistribution and use in source and binary forms, with or without
5// modification, are permitted provided that the following conditions are
6// met: redistributions of source code must retain the above copyright
7// notice, this list of conditions and the following disclaimer;
8// redistributions in binary form must reproduce the above copyright

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753 res.d = arg1.d / arg2.d;
754 resBits = res.i;
755 }
756
757 result = insertBits(result, hiIndex, loIndex, resBits);
758 }
759 FpDestReg.uqw = result;
760 '''
1/// Copyright (c) 2009 The Regents of The University of Michigan
2// All rights reserved.
3//
4// Redistribution and use in source and binary forms, with or without
5// modification, are permitted provided that the following conditions are
6// met: redistributions of source code must retain the above copyright
7// notice, this list of conditions and the following disclaimer;
8// redistributions in binary form must reproduce the above copyright

--- 744 unchanged lines hidden (view full) ---

753 res.d = arg1.d / arg2.d;
754 resBits = res.i;
755 }
756
757 result = insertBits(result, hiIndex, loIndex, resBits);
758 }
759 FpDestReg.uqw = result;
760 '''
761
762 class Cvti2f(MediaOp):
763 def __init__(self, dest, src, \
764 size = None, destSize = None, srcSize = None, ext = None):
765 super(Cvti2f, self).__init__(dest, src,\
766 "InstRegIndex(0)", size, destSize, srcSize, ext)
767 code = '''
768 union floatInt
769 {
770 float f;
771 uint32_t i;
772 };
773 union doubleInt
774 {
775 double d;
776 uint64_t i;
777 };
778
779 assert(destSize == 4 || destSize == 8);
780 assert(srcSize == 4 || srcSize == 8);
781 int srcSizeBits = srcSize * 8;
782 int destSizeBits = destSize * 8;
783 int items;
784 int srcStart = 0;
785 int destStart = 0;
786 if (srcSize == 2 * destSize) {
787 items = (ext & 0x1) ? 1: sizeof(FloatRegBits) / srcSize;
788 if (ext & 0x2)
789 destStart = destSizeBits * items;
790 } else if (destSize == 2 * srcSize) {
791 items = (ext & 0x1) ? 1: sizeof(FloatRegBits) / destSize;
792 if (ext & 0x2)
793 srcStart = srcSizeBits * items;
794 } else {
795 items = (ext & 0x1) ? 1: sizeof(FloatRegBits) / destSize;
796 }
797 uint64_t result = FpDestReg.uqw;
798
799 for (int i = 0; i < items; i++) {
800 int srcHiIndex = srcStart + (i + 1) * srcSizeBits - 1;
801 int srcLoIndex = srcStart + (i + 0) * srcSizeBits;
802 uint64_t argBits = bits(FpSrcReg1.uqw, srcHiIndex, srcLoIndex);
803 int64_t sArg = argBits | (0 - (argBits & (1 << srcHiIndex)));
804 double arg = sArg;
805
806 if (destSize == 4) {
807 floatInt fi;
808 fi.f = arg;
809 argBits = fi.i;
810 } else {
811 doubleInt di;
812 di.d = arg;
813 argBits = di.i;
814 }
815 int destHiIndex = destStart + (i + 1) * destSizeBits - 1;
816 int destLoIndex = destStart + (i + 0) * destSizeBits;
817 result = insertBits(result, destHiIndex, destLoIndex, argBits);
818 }
819 FpDestReg.uqw = result;
820 '''
761}};
821}};