fp.isa (7799:5d0f62927d75) fp.isa (8560:5c4bac827934)
1// -*- mode:c++ -*-
2
3// Copyright (c) 2003-2005 The Regents of The University of Michigan
4// All rights reserved.
5//
6// Redistribution and use in source and binary forms, with or without
7// modification, are permitted provided that the following conditions are
8// met: redistributions of source code must retain the above copyright

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37// BasicOperateWithNopCheck.
38//
39
40output exec {{
41 /// Check "FP enabled" machine status bit. Called when executing any FP
42 /// instruction in full-system mode.
43 /// @retval Full-system mode: NoFault if FP is enabled, FenFault
44 /// if not. Non-full-system mode: always returns NoFault.
1// -*- mode:c++ -*-
2
3// Copyright (c) 2003-2005 The Regents of The University of Michigan
4// All rights reserved.
5//
6// Redistribution and use in source and binary forms, with or without
7// modification, are permitted provided that the following conditions are
8// met: redistributions of source code must retain the above copyright

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37// BasicOperateWithNopCheck.
38//
39
40output exec {{
41 /// Check "FP enabled" machine status bit. Called when executing any FP
42 /// instruction in full-system mode.
43 /// @retval Full-system mode: NoFault if FP is enabled, FenFault
44 /// if not. Non-full-system mode: always returns NoFault.
45#if FULL_SYSTEM
46 inline Fault checkFpEnableFault(%(CPU_exec_context)s *xc)
47 {
48 Fault fault = NoFault; // dummy... this ipr access should not fault
45 inline Fault checkFpEnableFault(%(CPU_exec_context)s *xc)
46 {
47 Fault fault = NoFault; // dummy... this ipr access should not fault
49 if (!ICSR_FPE(xc->readMiscReg(IPR_ICSR))) {
48 if (FULL_SYSTEM && !ICSR_FPE(xc->readMiscReg(IPR_ICSR))) {
50 fault = new FloatEnableFault;
51 }
52 return fault;
53 }
49 fault = new FloatEnableFault;
50 }
51 return fault;
52 }
54#else
55 inline Fault checkFpEnableFault(%(CPU_exec_context)s *xc)
56 {
57 return NoFault;
58 }
59#endif
60}};
61
62output header {{
63 /**
64 * Base class for general floating-point instructions. Includes
65 * support for various Alpha rounding and trapping modes. Only FP
66 * instructions that require this support are derived from this
67 * class; the rest derive directly from AlphaStaticInst.

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54
55output header {{
56 /**
57 * Base class for general floating-point instructions. Includes
58 * support for various Alpha rounding and trapping modes. Only FP
59 * instructions that require this support are derived from this
60 * class; the rest derive directly from AlphaStaticInst.

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