diff options
Diffstat (limited to 'src/arch/arm/faults.cc')
-rw-r--r-- | src/arch/arm/faults.cc | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/src/arch/arm/faults.cc b/src/arch/arm/faults.cc index 9e32a23a3..9b3657909 100644 --- a/src/arch/arm/faults.cc +++ b/src/arch/arm/faults.cc @@ -160,6 +160,27 @@ UndefinedInstruction::invoke(ThreadContext *tc) } } +void +SupervisorCall::invoke(ThreadContext *tc) +{ + // As of now, there isn't a 32 bit thumb version of this instruction. + assert(!machInst.bigThumb); + uint32_t callNum; + if (machInst.thumb) { + callNum = bits(machInst, 7, 0); + } else { + callNum = bits(machInst, 23, 0); + } + if (callNum == 0) { + callNum = tc->readIntReg(INTREG_R7); + } + tc->syscall(callNum); + + // Advance the PC since that won't happen automatically. + tc->setPC(tc->readNextPC()); + tc->setNextPC(tc->readNextNPC()); +} + #endif // FULL_SYSTEM // return via SUBS pc, lr, xxx; rfe, movs, ldm |