pred_inst.hh (12616:4b463b4dc098) pred_inst.hh (13120:690a0db8e58b)
1/*
1/*
2 * Copyright (c) 2010, 2012-2013 ARM Limited
2 * Copyright (c) 2010, 2012-2013, 2017-2018 ARM Limited
3 * All rights reserved
4 *
5 * The license below extends only to copyright in the software and shall
6 * not be construed as granting a license to any other intellectual
7 * property including but not limited to intellectual property relating
8 * to a hardware implementation of the functionality of the software
9 * licensed hereunder. You may use the software subject to the license
10 * terms below provided that you ensure that this notice is replicated

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153 M5_FALLTHROUGH;
154 default:
155 immValid = false;
156 break;
157 }
158 return bigData;
159}
160
3 * All rights reserved
4 *
5 * The license below extends only to copyright in the software and shall
6 * not be construed as granting a license to any other intellectual
7 * property including but not limited to intellectual property relating
8 * to a hardware implementation of the functionality of the software
9 * licensed hereunder. You may use the software subject to the license
10 * terms below provided that you ensure that this notice is replicated

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153 M5_FALLTHROUGH;
154 default:
155 immValid = false;
156 break;
157 }
158 return bigData;
159}
160
161/** Floating point data types. */
162enum class FpDataType { Fp16, Fp32, Fp64 };
163
161static inline uint64_t
164static inline uint64_t
162vfp_modified_imm(uint8_t data, bool wide)
165vfp_modified_imm(uint8_t data, FpDataType dtype)
163{
164 uint64_t bigData = data;
165 uint64_t repData;
166{
167 uint64_t bigData = data;
168 uint64_t repData;
166 if (wide) {
167 repData = bits(data, 6) ? 0xFF : 0;
168 bigData = (bits(bigData, 5, 0) << 48) |
169 (repData << 54) | (bits(~bigData, 6) << 62) |
170 (bits(bigData, 7) << 63);
171 } else {
169 switch (dtype) {
170 case FpDataType::Fp16:
171 repData = bits(data, 6) ? 0x3 : 0;
172 bigData = (bits(bigData, 5, 0) << 6) |
173 (repData << 12) | (bits(~bigData, 6) << 14) |
174 (bits(bigData, 7) << 15);
175 break;
176 case FpDataType::Fp32:
172 repData = bits(data, 6) ? 0x1F : 0;
173 bigData = (bits(bigData, 5, 0) << 19) |
174 (repData << 25) | (bits(~bigData, 6) << 30) |
175 (bits(bigData, 7) << 31);
177 repData = bits(data, 6) ? 0x1F : 0;
178 bigData = (bits(bigData, 5, 0) << 19) |
179 (repData << 25) | (bits(~bigData, 6) << 30) |
180 (bits(bigData, 7) << 31);
181 break;
182 case FpDataType::Fp64:
183 repData = bits(data, 6) ? 0xFF : 0;
184 bigData = (bits(bigData, 5, 0) << 48) |
185 (repData << 54) | (bits(~bigData, 6) << 62) |
186 (bits(bigData, 7) << 63);
187 break;
188 default:
189 assert(0);
176 }
177 return bigData;
178}
179
190 }
191 return bigData;
192}
193
194static inline FpDataType
195decode_fp_data_type(uint8_t encoding)
196{
197 switch (encoding) {
198 case 1: return FpDataType::Fp16;
199 case 2: return FpDataType::Fp32;
200 case 3: return FpDataType::Fp64;
201 default:
202 panic(
203 "Invalid floating point data type in VFP/SIMD or SVE instruction");
204 }
205}
180
181/**
182 * Base class for predicated integer operations.
183 */
184class PredOp : public ArmStaticInst
185{
186 protected:
187

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207/**
208 * Base class for predicated integer operations.
209 */
210class PredOp : public ArmStaticInst
211{
212 protected:
213

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