misc.isa (7199:3e96b80d1b55) misc.isa (7203:39753c33e7aa)
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

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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}};
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

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

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}};