201931302928272423.2RESORESOM[3:0]NZC-ILL-M[4].ExecutionStateSsRESOMaskbitsMode bitsConditionflags26 Ss (Software Step) It is used by a debuggerto initiate a Software Step exceptionItindicates which softwarestepstatemachine statePEwasinARM052019-3-17
ARM05 2019-3-17 26 SS (Software Step) It is used by a debugger to initiate a Software Step exception It indicates which software step state machine state PE was in
120l19313029282724232210RESONZRESORESO1FM[3:0]cLM[4].ExecutionStatessRESOMaskbitsMode bitsConditionflags27IL(lllegalExecutionState)It shows the value of PSTATE.IL immediatelybeforethe exception wastakenARM052019-3-17
ARM05 2019-3-17 27 IL (Illegal Execution State) It shows the value of PSTATE.IL immediately before the exception was taken
21201931302928272423.22RESORESOM[3:0]NZoLM[4].ExecutionStatessRESOMaskbitsMode bitsConditionflags28 RESO (Reserved)ForexceptionstakenfromAArch64ForexceptionstakenfromAArch32GE[3:O]ShowsthevalueofPSTATE.GEimmediatelybeforetheexceptionwastakenIT[7:2] In conjunction withIT[1:O], showsthe value of PSTATE.ITbefore theexceptionwastakenARM052019-3-17
ARM05 2019-3-17 28 RES0 (Reserved) For exceptions taken from AArch64 For exceptions taken from AArch32 GE[3:0] Shows the value of PSTATE.GE immediately before the exception was taken IT[7:2] In conjunction with IT[1:0], shows the value of PSTATE.IT before the exception was taken
2423222120193130292827DM[3:0]RESORESONzovRESOLILM[4].ExecutionStateSSRESOMaskbitsModebitsConditionflags29D (debugexceptionmask)ForexceptionstakenfromAArch64stateShowsthevalueofPSTATE.DimmediatelybeforetheexceptionwastakenEForexceptionstakenfromAArch32stateShowsthevalueofPSTATE.EimmediatelybeforetheexceptionwastakenARM052019-3-17
ARM05 2019-3-17 29 D (debug exception mask) For exceptions taken from AArch64 state Shows the value of PSTATE.D immediately before the exception was taken E For exceptions taken from AArch32 state Shows the value of PSTATE.E immediately before the exception was taken
2423222120193130292827FRESOM[3:0]NZoRESORESOLILL-M[4].ExecutionStateSsRESOConditionflagsMaskbitsModebits30Interruptmaskbits Shows the valuesof the interrupt mask bits immediately before theexceptionwastaken:A,bit[8]SErrorinterruptmaskbit], bit[7] IRQ mask bit口F,bit[6] FlQmaskbitARM052019-3-17
ARM05 2019-3-17 30 Interrupt mask bits Shows the values of the interrupt mask bits immediately before the exception was taken: A, bit[8] SError interrupt mask bit I, bit[7] IRQ mask bit F, bit[6] FIQ mask bit