diff options
Diffstat (limited to 'src/arch/sparc/isa/base.isa')
| -rw-r--r-- | src/arch/sparc/isa/base.isa | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/src/arch/sparc/isa/base.isa b/src/arch/sparc/isa/base.isa index b78511398..58a17f23e 100644 --- a/src/arch/sparc/isa/base.isa +++ b/src/arch/sparc/isa/base.isa @@ -416,3 +416,27 @@ output decoder {{ } }}; +output exec {{ + /// Check "FP enabled" machine status bit. Called when executing any FP + /// instruction in full-system mode. + /// @retval Full-system mode: NoFault if FP is enabled, FpDisabled + /// if not. Non-full-system mode: always returns NoFault. +#if FULL_SYSTEM + inline Fault checkFpEnableFault(%(CPU_exec_context)s *xc) + { + Fault fault = NoFault; // dummy... this ipr access should not fault + if (xc->readMiscRegWithEffect(MISCREG_PSTATE) & PSTATE::pef && + xc->readMiscRegWithEffect(MISCREG_FPRS) & 0x4) + return NoFault; + else + return new FpDisabled; + } +#else + inline Fault checkFpEnableFault(%(CPU_exec_context)s *xc) + { + return NoFault; + } +#endif +}}; + + |