2 * Copyright (c) 2011-2015 Advanced Micro Devices, Inc.
5 * For use for simulation and test purposes only
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions are met:
10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright notice,
14 * this list of conditions and the following disclaimer in the documentation
15 * and/or other materials provided with the distribution.
17 * 3. Neither the name of the copyright holder nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
22 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
25 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31 * POSSIBILITY OF SUCH DAMAGE.
33 * Author: Steve Reinhardt
43 #include "base/misc.hh"
47 typedef std::bitset<std::numeric_limits<unsigned long long>::digits> VectorMask;
48 typedef std::shared_ptr<GPUDynInst> GPUDynInstPtr;
53 WaitClass() : nxtAvail(0), lookAheadAvail(0), tcnt(0) { }
54 void init(uint64_t *_tcnt, uint32_t _numStages=0)
57 numStages = _numStages;
62 fatal_if(nxtAvail > *tcnt,
63 "Can't allocate resource because it is busy!!!");
66 void preset(uint32_t delay)
68 lookAheadAvail = std::max(lookAheadAvail, delay + (*tcnt) - numStages);
70 bool rdy() const { return *tcnt >= nxtAvail; }
71 bool prerdy() const { return *tcnt >= lookAheadAvail; }
74 // timestamp indicating when resource will be available
76 // timestamp indicating when resource will be available including
77 // pending uses of the resource (when there is a cycle gap between
79 uint64_t lookAheadAvail;
82 // number of stages between checking if a resource is ready and
83 // setting the resource's utilization
92 Float16() { val = 0; }
94 Float16(const Float16 &x) : val(x.val) { }
98 uint32_t ai = *(uint32_t *)&x;
100 uint32_t s = (ai >> 31) & 0x1;
101 uint32_t exp = (ai >> 23) & 0xff;
102 uint32_t mant = (ai >> 0) & 0x7fffff;
104 if (exp == 0 || exp <= 0x70) {
107 } else if (exp == 0xff) {
109 } else if (exp >= 0x8f) {
113 exp = exp - 0x7f + 0x0f;
124 operator float() const
126 uint32_t s = (val >> 15) & 0x1;
127 uint32_t exp = (val >> 10) & 0x1f;
128 uint32_t mant = (val >> 0) & 0x3ff;
133 } else if (exp == 0x1f) {
136 exp = exp - 0x0f + 0x7f;
142 val1 |= (mant << 13);
144 return *(float*)&val1;
148 #endif // __MISC_HH__