mediaop.isa (6603:b3333ef98685) mediaop.isa (6605:e16cf917dcec)
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

--- 1162 unchanged lines hidden (view full) ---

1171 resBits = (arg1Bits << shiftAmt);
1172 }
1173
1174 result = insertBits(result, hiIndex, loIndex, resBits);
1175 }
1176 FpDestReg.uqw = result;
1177 '''
1178
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

--- 1162 unchanged lines hidden (view full) ---

1171 resBits = (arg1Bits << shiftAmt);
1172 }
1173
1174 result = insertBits(result, hiIndex, loIndex, resBits);
1175 }
1176 FpDestReg.uqw = result;
1177 '''
1178
1179 class Cvtf2i(MediaOp):
1180 def __init__(self, dest, src, \
1181 size = None, destSize = None, srcSize = None, ext = None):
1182 super(Cvtf2i, self).__init__(dest, src,\
1183 "InstRegIndex(0)", size, destSize, srcSize, ext)
1184 code = '''
1185 union floatInt
1186 {
1187 float f;
1188 uint32_t i;
1189 };
1190 union doubleInt
1191 {
1192 double d;
1193 uint64_t i;
1194 };
1195
1196 assert(destSize == 4 || destSize == 8);
1197 assert(srcSize == 4 || srcSize == 8);
1198 int srcSizeBits = srcSize * 8;
1199 int destSizeBits = destSize * 8;
1200 int items;
1201 int srcStart = 0;
1202 int destStart = 0;
1203 if (srcSize == 2 * destSize) {
1204 items = (ext & 0x1) ? 1: sizeof(FloatRegBits) / srcSize;
1205 if (ext & 0x2)
1206 destStart = destSizeBits * items;
1207 } else if (destSize == 2 * srcSize) {
1208 items = (ext & 0x1) ? 1: sizeof(FloatRegBits) / destSize;
1209 if (ext & 0x2)
1210 srcStart = srcSizeBits * items;
1211 } else {
1212 items = (ext & 0x1) ? 1: sizeof(FloatRegBits) / destSize;
1213 }
1214 uint64_t result = FpDestReg.uqw;
1215
1216 for (int i = 0; i < items; i++) {
1217 int srcHiIndex = srcStart + (i + 1) * srcSizeBits - 1;
1218 int srcLoIndex = srcStart + (i + 0) * srcSizeBits;
1219 uint64_t argBits = bits(FpSrcReg1.uqw, srcHiIndex, srcLoIndex);
1220 double arg;
1221
1222 if (srcSize == 4) {
1223 floatInt fi;
1224 fi.i = argBits;
1225 arg = fi.f;
1226 } else {
1227 doubleInt di;
1228 di.i = argBits;
1229 arg = di.d;
1230 }
1231
1232 if (ext & 0x4) {
1233 if (arg >= 0)
1234 arg += 0.5;
1235 else
1236 arg -= 0.5;
1237 }
1238
1239 if (destSize == 4) {
1240 argBits = (uint32_t)(float)arg;
1241 } else {
1242 argBits = (uint64_t)arg;
1243 }
1244 int destHiIndex = destStart + (i + 1) * destSizeBits - 1;
1245 int destLoIndex = destStart + (i + 0) * destSizeBits;
1246 result = insertBits(result, destHiIndex, destLoIndex, argBits);
1247 }
1248 FpDestReg.uqw = result;
1249 '''
1250
1179 class Cvti2f(MediaOp):
1180 def __init__(self, dest, src, \
1181 size = None, destSize = None, srcSize = None, ext = None):
1182 super(Cvti2f, self).__init__(dest, src,\
1183 "InstRegIndex(0)", size, destSize, srcSize, ext)
1184 code = '''
1185 union floatInt
1186 {

--- 296 unchanged lines hidden --- 		1251 class Cvti2f(MediaOp):
1252 def __init__(self, dest, src, \
1253 size = None, destSize = None, srcSize = None, ext = None):
1254 super(Cvti2f, self).__init__(dest, src,\
1255 "InstRegIndex(0)", size, destSize, srcSize, ext)
1256 code = '''
1257 union floatInt
1258 {

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