changeset a5dbea7ba3f9 in /z/repo/m5
details: http://repo.m5sim.org/m5?cmd=changeset;node=a5dbea7ba3f9
description:
X86: Implement a mask move microop.
diffstat:
1 file changed, 18 insertions(+)
src/arch/x86/isa/microops/mediaop.isa | 18 ++++++++++++++++++
diffs (28 lines):
diff -r f27fd3c3a153 -r a5dbea7ba3f9 src/arch/x86/isa/microops/mediaop.isa
--- a/src/arch/x86/isa/microops/mediaop.isa Mon Aug 17 20:22:56 2009 -0700
+++ b/src/arch/x86/isa/microops/mediaop.isa Mon Aug 17 20:22:56 2009 -0700
@@ -347,6 +347,24 @@
DestReg = DestReg | result;
'''
+ class Maskmov(MediaOp):
+ code = '''
+ assert(srcSize == destSize);
+ int size = srcSize;
+ int sizeBits = size * 8;
+ int items = (ext & 0x1) ? 1: (sizeof(FloatRegBits) / size);
+ uint64_t result = FpDestReg.uqw;
+
+ for (int i = 0; i < items; i++) {
+ int hiIndex = (i + 1) * sizeBits - 1;
+ int loIndex = (i + 0) * sizeBits;
+ uint64_t arg1Bits = bits(FpSrcReg1.uqw, hiIndex, loIndex);
+ if (bits(FpSrcReg2.uqw, hiIndex))
+ result = insertBits(result, hiIndex, loIndex, arg1Bits);
+ }
+ FpDestReg.uqw = result;
+ '''
+
class Unpack(MediaOp):
code = '''
assert(srcSize == destSize);
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