1/*
2 * Copyright (c) 2011-2015 Advanced Micro Devices, Inc.
3 * All rights reserved.
4 *
5 * For use for simulation and test purposes only
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions are met:
9 *
10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer.
12 *
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.
16 *
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.
20 *
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.
32 *
33 * Author: Steve Reinhardt
34 */
35
36#ifndef __MISC_HH__
37#define __MISC_HH__
38
39#include <bitset>
40#include <limits>
41#include <memory>
42
| 1/*
2 * Copyright (c) 2011-2015 Advanced Micro Devices, Inc.
3 * All rights reserved.
4 *
5 * For use for simulation and test purposes only
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions are met:
9 *
10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer.
12 *
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.
16 *
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.
20 *
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.
32 *
33 * Author: Steve Reinhardt
34 */
35
36#ifndef __MISC_HH__
37#define __MISC_HH__
38
39#include <bitset>
40#include <limits>
41#include <memory>
42
|
44
45class GPUDynInst;
46
47typedef std::bitset<std::numeric_limits<unsigned long long>::digits> VectorMask;
48typedef std::shared_ptr<GPUDynInst> GPUDynInstPtr;
49
50class WaitClass
51{
52 public:
53 WaitClass() : nxtAvail(0), lookAheadAvail(0), tcnt(0) { }
54 void init(uint64_t *_tcnt, uint32_t _numStages=0)
55 {
56 tcnt = _tcnt;
57 numStages = _numStages;
58 }
59
60 void set(uint32_t i)
61 {
62 fatal_if(nxtAvail > *tcnt,
63 "Can't allocate resource because it is busy!!!");
64 nxtAvail = *tcnt + i;
65 }
66 void preset(uint32_t delay)
67 {
68 lookAheadAvail = std::max(lookAheadAvail, delay + (*tcnt) - numStages);
69 }
70 bool rdy() const { return *tcnt >= nxtAvail; }
71 bool prerdy() const { return *tcnt >= lookAheadAvail; }
72
73 private:
74 // timestamp indicating when resource will be available
75 uint64_t nxtAvail;
76 // timestamp indicating when resource will be available including
77 // pending uses of the resource (when there is a cycle gap between
78 // rdy() and set()
79 uint64_t lookAheadAvail;
80 // current timestamp
81 uint64_t *tcnt;
82 // number of stages between checking if a resource is ready and
83 // setting the resource's utilization
84 uint32_t numStages;
85};
86
87class Float16
88{
89 public:
90 uint16_t val;
91
92 Float16() { val = 0; }
93
94 Float16(const Float16 &x) : val(x.val) { }
95
96 Float16(float x)
97 {
98 uint32_t ai = *(uint32_t *)&x;
99
100 uint32_t s = (ai >> 31) & 0x1;
101 uint32_t exp = (ai >> 23) & 0xff;
102 uint32_t mant = (ai >> 0) & 0x7fffff;
103
104 if (exp == 0 || exp <= 0x70) {
105 exp = 0;
106 mant = 0;
107 } else if (exp == 0xff) {
108 exp = 0x1f;
109 } else if (exp >= 0x8f) {
110 exp = 0x1f;
111 mant = 0;
112 } else {
113 exp = exp - 0x7f + 0x0f;
114 }
115
116 mant = mant >> 13;
117
118 val = 0;
119 val |= (s << 15);
120 val |= (exp << 10);
121 val |= (mant << 0);
122 }
123
124 operator float() const
125 {
126 uint32_t s = (val >> 15) & 0x1;
127 uint32_t exp = (val >> 10) & 0x1f;
128 uint32_t mant = (val >> 0) & 0x3ff;
129
130 if (!exp) {
131 exp = 0;
132 mant = 0;
133 } else if (exp == 0x1f) {
134 exp = 0xff;
135 } else {
136 exp = exp - 0x0f + 0x7f;
137 }
138
139 uint32_t val1 = 0;
140 val1 |= (s << 31);
141 val1 |= (exp << 23);
142 val1 |= (mant << 13);
143
144 return *(float*)&val1;
145 }
146};
147
148#endif // __MISC_HH__
| 44
45class GPUDynInst;
46
47typedef std::bitset<std::numeric_limits<unsigned long long>::digits> VectorMask;
48typedef std::shared_ptr<GPUDynInst> GPUDynInstPtr;
49
50class WaitClass
51{
52 public:
53 WaitClass() : nxtAvail(0), lookAheadAvail(0), tcnt(0) { }
54 void init(uint64_t *_tcnt, uint32_t _numStages=0)
55 {
56 tcnt = _tcnt;
57 numStages = _numStages;
58 }
59
60 void set(uint32_t i)
61 {
62 fatal_if(nxtAvail > *tcnt,
63 "Can't allocate resource because it is busy!!!");
64 nxtAvail = *tcnt + i;
65 }
66 void preset(uint32_t delay)
67 {
68 lookAheadAvail = std::max(lookAheadAvail, delay + (*tcnt) - numStages);
69 }
70 bool rdy() const { return *tcnt >= nxtAvail; }
71 bool prerdy() const { return *tcnt >= lookAheadAvail; }
72
73 private:
74 // timestamp indicating when resource will be available
75 uint64_t nxtAvail;
76 // timestamp indicating when resource will be available including
77 // pending uses of the resource (when there is a cycle gap between
78 // rdy() and set()
79 uint64_t lookAheadAvail;
80 // current timestamp
81 uint64_t *tcnt;
82 // number of stages between checking if a resource is ready and
83 // setting the resource's utilization
84 uint32_t numStages;
85};
86
87class Float16
88{
89 public:
90 uint16_t val;
91
92 Float16() { val = 0; }
93
94 Float16(const Float16 &x) : val(x.val) { }
95
96 Float16(float x)
97 {
98 uint32_t ai = *(uint32_t *)&x;
99
100 uint32_t s = (ai >> 31) & 0x1;
101 uint32_t exp = (ai >> 23) & 0xff;
102 uint32_t mant = (ai >> 0) & 0x7fffff;
103
104 if (exp == 0 || exp <= 0x70) {
105 exp = 0;
106 mant = 0;
107 } else if (exp == 0xff) {
108 exp = 0x1f;
109 } else if (exp >= 0x8f) {
110 exp = 0x1f;
111 mant = 0;
112 } else {
113 exp = exp - 0x7f + 0x0f;
114 }
115
116 mant = mant >> 13;
117
118 val = 0;
119 val |= (s << 15);
120 val |= (exp << 10);
121 val |= (mant << 0);
122 }
123
124 operator float() const
125 {
126 uint32_t s = (val >> 15) & 0x1;
127 uint32_t exp = (val >> 10) & 0x1f;
128 uint32_t mant = (val >> 0) & 0x3ff;
129
130 if (!exp) {
131 exp = 0;
132 mant = 0;
133 } else if (exp == 0x1f) {
134 exp = 0xff;
135 } else {
136 exp = exp - 0x0f + 0x7f;
137 }
138
139 uint32_t val1 = 0;
140 val1 |= (s << 31);
141 val1 |= (exp << 23);
142 val1 |= (mant << 13);
143
144 return *(float*)&val1;
145 }
146};
147
148#endif // __MISC_HH__
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