1// -*- mode:c++ -*-
2
3// Copyright (c) 2010 ARM Limited
4// All rights reserved
5//
6// The license below extends only to copyright in the software and shall
7// not be construed as granting a license to any other intellectual
8// property including but not limited to intellectual property relating
9// to a hardware implementation of the functionality of the software
10// licensed hereunder. You may use the software subject to the license
11// terms below provided that you ensure that this notice is replicated
12// unmodified and in its entirety in all distributions of the software,
13// modified or unmodified, in source code or in binary form.
14//
15// Redistribution and use in source and binary forms, with or without
16// modification, are permitted provided that the following conditions are
17// met: redistributions of source code must retain the above copyright
18// notice, this list of conditions and the following disclaimer;
19// redistributions in binary form must reproduce the above copyright
20// notice, this list of conditions and the following disclaimer in the
21// documentation and/or other materials provided with the distribution;
22// neither the name of the copyright holders nor the names of its
23// contributors may be used to endorse or promote products derived from
24// this software without specific prior written permission.
25//
26// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
27// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
28// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
29// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
30// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
31// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
32// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
33// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
34// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
35// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
36// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
37//
38// Authors: Gabe Black
39
40def format Svc() {{
41 decode_block = "return new Svc(machInst);"
42}};
43
44def format ArmMsrMrs() {{
45 decode_block = '''
46 {
47 const uint8_t byteMask = bits(machInst, 19, 16);
48 const IntRegIndex rn = (IntRegIndex)(uint32_t)bits(machInst, 3, 0);
49 const IntRegIndex rd = (IntRegIndex)(uint32_t)bits(machInst, 15, 12);
50 const uint32_t opcode = bits(machInst, 24, 21);
51 const bool useImm = bits(machInst, 25);
52
53 const uint32_t unrotated = bits(machInst, 7, 0);
54 const uint32_t rotation = (bits(machInst, 11, 8) << 1);
55 const uint32_t imm = rotate_imm(unrotated, rotation);
56
57 switch (opcode) {
58 case 0x8:
59 return new MrsCpsr(machInst, rd);
60 case 0x9:
61 if (useImm) {
62 return new MsrCpsrImm(machInst, imm, byteMask);
63 } else {
64 return new MsrCpsrReg(machInst, rn, byteMask);
65 }
66 case 0xa:
67 return new MrsSpsr(machInst, rd);
68 case 0xb:
69 if (useImm) {
70 return new MsrSpsrImm(machInst, imm, byteMask);
71 } else {
72 return new MsrSpsrReg(machInst, rn, byteMask);
73 }
74 default:
75 return new Unknown(machInst);
76 }
77 }
78 '''
79}};
| 1// -*- mode:c++ -*-
2
3// Copyright (c) 2010 ARM Limited
4// All rights reserved
5//
6// The license below extends only to copyright in the software and shall
7// not be construed as granting a license to any other intellectual
8// property including but not limited to intellectual property relating
9// to a hardware implementation of the functionality of the software
10// licensed hereunder. You may use the software subject to the license
11// terms below provided that you ensure that this notice is replicated
12// unmodified and in its entirety in all distributions of the software,
13// modified or unmodified, in source code or in binary form.
14//
15// Redistribution and use in source and binary forms, with or without
16// modification, are permitted provided that the following conditions are
17// met: redistributions of source code must retain the above copyright
18// notice, this list of conditions and the following disclaimer;
19// redistributions in binary form must reproduce the above copyright
20// notice, this list of conditions and the following disclaimer in the
21// documentation and/or other materials provided with the distribution;
22// neither the name of the copyright holders nor the names of its
23// contributors may be used to endorse or promote products derived from
24// this software without specific prior written permission.
25//
26// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
27// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
28// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
29// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
30// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
31// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
32// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
33// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
34// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
35// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
36// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
37//
38// Authors: Gabe Black
39
40def format Svc() {{
41 decode_block = "return new Svc(machInst);"
42}};
43
44def format ArmMsrMrs() {{
45 decode_block = '''
46 {
47 const uint8_t byteMask = bits(machInst, 19, 16);
48 const IntRegIndex rn = (IntRegIndex)(uint32_t)bits(machInst, 3, 0);
49 const IntRegIndex rd = (IntRegIndex)(uint32_t)bits(machInst, 15, 12);
50 const uint32_t opcode = bits(machInst, 24, 21);
51 const bool useImm = bits(machInst, 25);
52
53 const uint32_t unrotated = bits(machInst, 7, 0);
54 const uint32_t rotation = (bits(machInst, 11, 8) << 1);
55 const uint32_t imm = rotate_imm(unrotated, rotation);
56
57 switch (opcode) {
58 case 0x8:
59 return new MrsCpsr(machInst, rd);
60 case 0x9:
61 if (useImm) {
62 return new MsrCpsrImm(machInst, imm, byteMask);
63 } else {
64 return new MsrCpsrReg(machInst, rn, byteMask);
65 }
66 case 0xa:
67 return new MrsSpsr(machInst, rd);
68 case 0xb:
69 if (useImm) {
70 return new MsrSpsrImm(machInst, imm, byteMask);
71 } else {
72 return new MsrSpsrReg(machInst, rn, byteMask);
73 }
74 default:
75 return new Unknown(machInst);
76 }
77 }
78 '''
79}};
|
| 80
81def format McrMrc15() {{
82 decode_block = '''
83 {
84 const uint32_t opc1 = bits(machInst, 23, 21);
85 const uint32_t crn = bits(machInst, 19, 16);
86 const uint32_t opc2 = bits(machInst, 7, 5);
87 const uint32_t crm = bits(machInst, 3, 0);
88 const MiscRegIndex miscReg = decodeCP15Reg(crn, opc1, crm, opc2);
89 const IntRegIndex rt = (IntRegIndex)(uint32_t)bits(machInst, 15, 12);
90
91 const bool isRead = bits(machInst, 20);
92
93 if (miscReg == MISCREG_NOP) {
94 return new NopInst(machInst);
95 } else if (miscReg == NUM_MISCREGS) {
96 return new Unknown(machInst);
97 } else {
98 if (isRead) {
99 return new Mrc15(machInst, rt, (IntRegIndex)miscReg);
100 } else {
101 return new Mcr15(machInst, (IntRegIndex)miscReg, rt);
102 }
103 }
104 }
105 '''
106}};
|