//########################################################################### //** //** Copyright (C) 1996-98 Intel Corporation. All rights reserved. //** //** The information and source code contained herein is the exclusive //** property of Intel Corporation and may not be disclosed, examined //** or reproduced in whole or in part without explicit written authorization //** from the company. //** //########################################################################### //----------------------------------------------------------------------------- // Version control information follows. // // $Header: I:/DEVPVCS/OSMCA/osmchk.s_v 2.1 05 Mar 1999 12:59:42 smariset $ // $Log: I:/DEVPVCS/OSMCA/osmchk.s_v $ // // Rev 2.0 Dec 11 1998 11:42:18 khaw //Post FW 0.5 release sync-up // // Rev 1.4 12 Oct 1998 14:05:20 smariset //gp fix up work around // /////////////////////////////////////////////////////////////////////////////// // // Module Name: OSMCHK.ASM - Merced OS Machine Check Abort Dispatcher // // Description: // Merced OS Machine Check Abort Stub to OSMCA "C" frame work. If // we find a TLB related error, we cannot switch to virtual mode in // the OS. All TLB related errors will need system reboot after // storing the errors to a persistence storage media (HD or Flash). // // HalpOsMcaDispatch - Main // // Target Platform: Merced // // Reuse: None // ////////////////////////////////////////////////////////////////////////////M// #include "ksia64.h" #include "fwglobal.h" GLOBAL_FUNCTION(HalpOsMcaDispatch) GLOBAL_FUNCTION(HalpMCAEnable) GLOBAL_FUNCTION(HalpMcaHandler) GLOBAL_FUNCTION(HalpAcquireMcaSpinLock) GLOBAL_FUNCTION(HalpReleaseMcaSpinLock) .text //++ // Name: HalpOsMcaDispatch() // // Routine Description: // // This is the OS call back handler, which is only exported to the SAL for call back // during MCA errors. This handler will dispatch to the appropriate MCA procedure. // // Sets up virtual->physical address translation // 0x00100000->0x00100000 in dtr1/itr1 for OS_MCA. // // Arguments: // // None // // On entry: // // This function is called: // - in physical mode for uncorrected or correctable MCA events, // - RSE enforced in lazy mode, // - Processor resources: // PSR.dt = 0, PSR.it = 0, PSR.rt = 0 - Physical mode. // PSR.ic = 0, PSR.i = 0 - Interrupt resources collection and interrupt disabled. // PSR.mc = 1 - Machine Checks masked // PSR.mfl = 0 - low fp disabled. // GR1 : OS_MCA Global Pointer (GP) registered by OS: OS's GP. // GR2-7: Unspecified. // GR8 : Physical address of the PAL_PROC entrypoint. // GR9 : Physical address of the SAL_PROC entrypoint. // GR10 : Physical address value of the SAL Global Pointer: SAL's GP. // GR11 : Rendezvous state information, defined as: // 0 - Rendezvous of other processors was not required by // PAL_CHECK and as such was not done. // 1 - All other processors in the system were successfully // rendezvous using MC_RENDEZVOUS interrupt. // 2 - All other processors in the system were successfully // rendezvous using a combination of MC_RENDEZVOUS // interrupt and INIT. // -1 - Rendezvous of other processors was required by PAL // but was unsuccessful. // GR12 : Return address to a location within SAL_CHECK. // GR17 : Pointer to processor minimum state saved memory location. // GR18 : Processor state as defined below: // D0-D5: Reserved // D6-D31: As defined in PAL EAS // D60-D63: As defined in PAL EAS // D32-D47: Size in bytes of processor dynamic state // D48-D59: Reserved. // GR19 : Return address to a location within PAL_CHECK. // BR0 : Unspecified. // // Return State: // // Note : The OS_MCA procedure may or may not return to SAL_CHECK // in the case of uncorrected machine checks. // If it returns to SAL, the runtime convention requires that // it sets appropriate values in the Min-State area pointed // to by GR12 for continuing execution at the interrupted // context or at a new context. // Furthermore, the OS_MCA procedure must restore the // processor state to the same state as on entry except as: // GR1-7 : Unspecified. // GR8 : Return status // 0 [= SAL_STATUS_SUCCESS] - Error has been corrected // by OS_MCA. // -1 - Error has not been corrected by OS_MCA and // SAL must warm boot the system. // -2 - Error has not been corrected by OS_MCA and // SAL must cold boot the system. // -3 - Error has not been corrected by OS_MCA and // SAL must halt the system. // GR9 : Physical address value for SAL's GP. // GR10 : Context flag // 0 - Return will be to the same context. // 1 - Return will be to a new context. // GR11-21: Unspecified. // GR22 : Pointer to a structure containing new values of registers // in the Min-State Save area. // OS_MCA must supply this parameter even if it does not // change the register values in the Min-State Save areas. // GR23-31: Unspecified. // BR0 : Unspecified. // PSR.mc : May be either 0 or 1. //-- HalpOsMcaDispatch:: // aliases for known registers: rPalProcEntryPoint = r8 rSalProcEntryPoint = r9 rSalGlobalPointer = r10 rRendezVousResult = r11 rSalReturnAddress = r12 rProcMinStateSavePtr = r17 rProcStateParameter = r18 rPalCheckReturnAddress = r19 rEventResources = t22 rPcrPhysicalAddress = t6 // // - Flag the processor as "InOsMca": // KiPcr.InOsMca = 1 // // - Update KiPcr.McaPTOM to point to TopOfMemory, // Memory after Processor Minimum State Save area. // // - Update processor McaResource.SalToOsHandOff // // - Update local rPcrMcaStateDump before calling osMcaProcStateDump. // mov rEventResources = PcOsMcaResourcePtr movl t21 = KiPcr ;; tpa rPcrPhysicalAddress = t21 // Calculate physical address of PCR mov t19 = SerSalToOsHandOff mov t1 = 0x1 ;; add t0 = rPcrPhysicalAddress, rEventResources sub t21 = rPcrPhysicalAddress, t21 add t16 = TOM, rProcMinStateSavePtr ;; ld8 rEventResources = [t0], PcInOsMca-PcOsMcaResourcePtr mov t18 = SerPTOM add t20 = 0x8, t19 ;; xchg1 t1 = [t0], t1 add rEventResources = rEventResources, t21 // Calculate the physical address of the OsMcaResources add t21 = 0x10, t19 ;; add t18 = rEventResources, t18 add t19 = rEventResources, t19 add t20 = rEventResources, t20 add t21 = rEventResources, t21 ;; ld8 t17 = [t16] st8 [t19] = rPalProcEntryPoint, 0x18 add t0 = SerStateDumpPhysical, rEventResources ;; st8 [t18] = t17 st8 [t20] = rSalProcEntryPoint, 0x18 st8 [t21] = rSalGlobalPointer, 0x18 ;; st8 [t19] = rRendezVousResult st8 [t20] = rSalReturnAddress st8 [t21] = rProcMinStateSavePtr ld8 t0 = [t0] // McaStateDump ;; // // Save in preserved registers: // - pointer to processor minimum state save area, // - processor state parameter // - PAL_CHECK return address. // s0 [=r4] <- r17, // s1 [=r5] <- r18, // s2 [=r6] <- r19 // SaveRs(rProcMinStateSavePtr, rProcStateParameter, rPalCheckReturnAddress) // // Save register resources in myStateDump[]. // br.dpnt osMcaProcStateDump ;; osMcaDoneDump:: // // If we have a TLB error, we cannot enable translation // tbit.nz.unc pt0,p0=s1, 60 // PSP.tc=60 (pt0) br.dpnt ResetNow ;; // // Initialize current sp and ar.bsp and ar.bspstore // // KiPcr.McaStackFrame[0] = ar.rsc // KiPcr.McaStackFrame[1] = ar.pfs // KiPcr.McaStackFrame[2] = ar.ifs // KiPcr.McaStackFrame[3] = ar.bspstore // KiPcr.McaStackFrame[4] = ar.rnat // ar.bspstore = t0 [=KiPcr.McaBspStore] // KiPcr.McaStackFrame[5] = ar.bsp - KiPcr.McaBspStore // [BUGBUG ?? : should be ar.bsptore=KiPcr.McaStackFrame[3]] // sp = KiPcr.McaStack // movl t21 = KiPcr + PcOsMcaResourcePtr ;; tpa t0 = t21 // Calculate physical address of PCR OsMcaResourcePtr mov t1 = SerStackFrame ;; sub t16 = SerBackStore, t21 sub t1 = t1, t21 ;; add t16 = t0, t16 add t1 = t0, t1 ld8 rEventResources = [t0], PcInitialBStore - PcOsMcaResourcePtr ;; add t16 = rEventResources, t16 // Calculate physical address of the new BSP mov t21 = t0 // t21 now points to InitialBStore in the PCR ;; add t1 = rEventResources, t1 // Calculate the physical address of the Stack Frame ld8 t0 = [t16], SerStack - SerBackStore ;; SwIntCxt( t4, t1, t0 ) ;; st8 [t21] = t0, PcInitialStack - PcInitialBStore // Save the InitialBStore in the PCR ld8 t1 = [t16], SerBackStoreLimit - SerStack // Get inital MCA stack ;; st8 [t21] = t1, PcBStoreLimit - PcInitialStack ld8 t0 = [t16], SerStackLimit - SerBackStoreLimit ;; add t1 = -STACK_SCRATCH_AREA, t1 st8 [t21] = t0, PcStackLimit - PcBStoreLimit // Save BStore limit ld8 t18 = [t16] ;; mov sp = t1 st8 [t21] = t18 ;; EnableTranslation:: // let us switch to virtual mode // // Need to do a "rfi" in order set "it" and "ed" bits in the PSR. // // Make sure interrupts are disabled and that we are running on bank 1. // rsm 1 << PSR_I bsw.1 ;; mov ar.rsc = r0 // put RSE in lazy mode and use kernel mode stores. // // psr mask prepration, warning we will have a problem with PMI here // movl t0 = MASK_IA64(PSR_BN,1) | MASK_IA64(PSR_IC,1) |MASK_IA64(PSR_DA,1) | MASK_IA64(PSR_IT,1) | MASK_IA64(PSR_RT,1) | MASK_IA64(PSR_DT,1) | MASK_IA64(PSR_MC,1);; mov t1 = psr;; or t0 = t0, t1 movl t1 = VirtualSwitchDone;; mov cr.iip = t1 mov cr.ipsr = t0;; rfi ;; VirtualSwitchDone:: // done with enabling address translation // call our handler movl t0 = HalpMcaHandler;; mov b6 = t0;; br.call.dpnt b0=b6 ;; DisableTranslation:: // psr mask prepration rsm MASK_IA64(PSR_IC,1);; movl t0 = MASK_IA64(PSR_DA,1) | MASK_IA64(PSR_IT,1) | MASK_IA64(PSR_RT,1) | MASK_IA64(PSR_DT,1);; movl t1=0xffffffffffffffff;; xor t0=t0,t1;; mov t1=psr;; and t0=t0,t1 movl t1=BeginOsMcaRestore;; tpa t1=t1;; mov cr.iip=t1;; mov cr.ipsr = t0;; rfi ;; BeginOsMcaRestore:: // restore the original stack frame here mov t16 = SerStackFrame movl t21 = KiPcr + PcOsMcaResourcePtr ;; tpa t1 = t21 // Calculate physical address of PCR OsMcaResourcePtr sub t16 = t16, t21 sub t0 = SerStateDumpPhysical, t21 ;; ld8 rEventResources = [t1] add t16 = t1, t16 add t0 = t1, t0 ;; add t16 = rEventResources, t16 // Calculate the physical address of the Stack Frame add t0 = rEventResources, t0 // Calculate the physical address of the State Dump pointer. ;; ld8 t0 = [t0]; movl t4 = PSRmcMask ;; RtnIntCxt( t4, t1, t16 ) // switch from interrupt context -> RSC mgmt. ;; // // let us restore all the registers from our PSI structure // mov t6 = gp br.dpnt osMcaProcStateRestore ;; osMcaDoneRestore:: // Pal requires DFH of 0 rsm 1 << PSR_DFH ;; rsm 1 << PSR_MFL // just restoring to original state only ;; srlz.d ;; // // - Restore processor state from OsToSalHandOff. // // - Branch back to SALE_CHECK. mov t1 = PcOsMcaResourcePtr movl t21 = KiPcr ;; tpa rPcrPhysicalAddress = t21 // Calculate physical address of PCR ;; add t0 = rPcrPhysicalAddress, t1 sub t21 = SerOsToSalHandOff, t21 ;; ld8 t1 = [t0], PcInOsMca-PcOsMcaResourcePtr add t21 = t21, rPcrPhysicalAddress ;; add t1 = t1, t21 // Calculate the physical address of the OsMcaResources->SalToOSHandOff ;; add t16 = 0x8, t1 add t17 = 0x10, t1 ;; ld8 r8 = [t1], 0x18 // result of error handling ld8 r9 = [t16], 0x18 // physical SAL's GP value ld8 r22 = [t17] // new Processor Min-State Save Ptr ;; ld8 t1 = [t1] // SAL return address ld8 r10 = [t16] // New Context Switch Flag xchg1 t0 = [t0], r0 // KiPcr.InOsMca = 0 ;; mov b0 = t1 br.dpnt b0 // Return to SALE_CHECK ;; StayInPhysicalMode:: // we have to reboot the machine, assume the log is already there in NVM // OS can read the log next time when it comes around. Or OS can try to // run in physical mode as well. ResetNow:: // do EFI system reset here... // Go to BugCheck (in physical mode). // Out to Port 80: Fatal TLB error // Thyself:: br Thyself // loop for safety ;; //EndMain////////////////////////////////////////////////////////////////////// //++ // Name: // osMcaProcStateDump() // // Stub Description: // // This stub dumps the processor state during MCHK to a data area // // On Entry: // // t0 = rPcrMcaStateDump. // // Return Value: // // None. // //-- osMcaProcStateDump:: // Get and save GR0-31 from Proc. Min. State Save Area to SAL PSI // TF: ASSERT( t0 == rPcrMcaStateDump ) //save BRs add t2=Inc8,t0 // duplicate t0 in t2 add t4=2*Inc8,t0 // duplicate t0 in t2 mov t1=b0 mov t3=b1 mov t5=b2;; st8 [t0]=t1,3*Inc8 st8 [t2]=t3,3*Inc8 st8 [t4]=t5,3*Inc8;; mov t1=b3 mov t3=b4 mov t5=b5;; st8 [t0]=t1,3*Inc8 st8 [t2]=t3,3*Inc8 st8 [t4]=t5,3*Inc8;; mov t1=b6 mov t3=b7;; st8 [t0]=t1,2*Inc8 st8 [t2]=t3,2*Inc8;; cSaveCRs:: // save CRs add t2=Inc8,t0 // duplicate t0 in t2 add t4=2*Inc8,t0 // duplicate t0 in t2 mov t1=cr0 // cr.dcr mov t3=cr1 // cr.itm mov t5=cr2;; // cr.iva st8 [t0]=t1,8*Inc8 st8 [t2]=t3,3*Inc8 st8 [t4]=t5,3*Inc8;; // 48 byte increments mov t1=cr8;; // cr.pta st8 [t0]=t1,Inc8*8;; // 64 byte increments // Reading interruption registers when PSR.ic=1 causes an illegal operation fault mov t1=psr;; tbit.nz.unc pt0,p0=t1,PSRic;; // PSI Valid Log bit pos. test (pt0) st8 [t0]=r0;; (pt0) adds t0 = 0x30*Inc8, t0 // cr16->cr64 increment (pt0) br.dpnt SkipIntrRegs ;; add t2=Inc8,t0 // duplicate t0 in t2 add t4=2*Inc8,t0 // duplicate t0 in t4 mov t1=cr16 // cr.ipsr mov t3=cr17 // cr.isr mov t5=r0;; // cr.ida => cr18 st8 [t0]=t1,3*Inc8 st8 [t2]=t3,3*Inc8 st8 [t4]=t5,3*Inc8;; mov t1=cr19 // cr.iip mov t3=cr20 // cr.ifa mov t5=cr21;; // cr.iitr st8 [t0]=t1,3*Inc8 st8 [t2]=t3,3*Inc8 st8 [t4]=t5,3*Inc8;; mov t1=cr22 // cr.iipa mov t3=cr23 // cr.ifs mov t5=cr24;; // cr.iim st8 [t0]=t1,3*Inc8 st8 [t2]=t3,3*Inc8 st8 [t4]=t5,3*Inc8;; mov t1=cr25;; // cr.iha st8 [t0]=t1;; adds t0 = 0x27*Inc8, t0;; // cr25->cr64 byte increment SkipIntrRegs:: mov t1=cr64;; // cr.lid st8 [t0]=t1,Inc8 // mov t1=cr65;; // cr.ivr st8 [t0]=t1,Inc8 mov t1=cr66;; // cr.tpr st8 [t0]=t1,Inc8 mov t1=r0;; // cr.eoi st8 [t0]=t1,Inc8 // mov t1=r0;; // cr.irr0 st8 [t0]=t1,Inc8 mov t1=r0;; // cr.irr1 st8 [t0]=t1,Inc8 mov t1=r0;; // cr.irr2 st8 [t0]=t1,Inc8 mov t1=r0;; // cr.irr3 st8 [t0]=t1,Inc8 mov t1=r0;; // cr.itv st8 [t0]=t1,Inc8 mov t1=r0;; // cr.pmv st8 [t0]=t1,Inc8 mov t1=r0;; // cr.cmcv st8 [t0]=t1,6*Inc8 mov t1=r0;; // cr.lrr0 st8 [t0]=t1,Inc8 mov t1=r0;; // cr.lrr1 st8 [t0]=t1;; adds t0 = 0x2f*Inc8, t0;; // cr81->ar [128] cSaveARs:: // save ARs add t2=Inc8,t0 // duplicate t0 in t2 add t4=2*Inc8,t0 // duplicate t0 in t4 mov t1=ar0 // ar.kr0 mov t3=ar1 // ar.kr1 mov t5=ar2;; // ar.kr2 st8 [t0]=t1,3*Inc8 st8 [t2]=t3,3*Inc8 st8 [t4]=t5,3*Inc8;; mov t1=ar3 // ar.kr3 mov t3=ar4 // ar.kr4 mov t5=ar5;; // ar.kr5 st8 [t0]=t1,3*Inc8 st8 [t2]=t3,3*Inc8 st8 [t4]=t5,13*Inc8;; // ar5->ar18 mov t1=ar6 // ar.kr6 mov t3=ar7;; // ar.kr7 st8 [t0]=t1,10*Inc8 st8 [t2]=t3,10*Inc8;; mov t1=ar16 // ar.rsc mov t3=ar17 // ar.bsp mov t5=ar18;; // ar.bspstore st8 [t0]=t1,3*Inc8 st8 [t2]=t3,3*Inc8 st8 [t4]=t5,3*Inc8;; mov t1=ar19;; // ar.rnat st8 [t0]=t1,Inc8*13 // increment by 13x8 bytes mov t1=ar32;; // ar.ccv st8 [t0]=t1,Inc8*4 mov t1=ar36;; // ar.unat st8 [t0]=t1,Inc8*4 mov t1=ar40;; // ar.fpsr st8 [t0]=t1,Inc8*4 mov t1=ar44;; // ar.itc st8 [t0]=t1,160 // 160 mov t1=ar64;; // ar.pfs st8 [t0]=t1,Inc8 mov t1=ar65;; // ar.lc st8 [t0]=t1,Inc8 mov t1=ar66;; // ar.ec st8 [t0]=t1 adds t0=Inc8*62,t0 //padding // save RRs mov ar.lc=0x08-1 movl t2=0x00;; cStRR:: mov t1=rr[t2];; st8 [t0]=t1,Inc8 add t2=1,t2 br.cloop.dpnt cStRR ;; // align memory addresses to 16 bytes and t1=0x0f,t0;; cmp.ne.unc pt0,p0=t1,r0;; (pt0) add t0=Inc8,t0 cSaveFRs:: // just save FP for MCA restore only, "C" code will trash f6-f15 // save ar.NaT mov t3=ar.unat;; // ar.unat stf.spill [t0]=f6,Inc16;; stf.spill [t0]=f7,Inc16;; stf.spill [t0]=f8,Inc16;; stf.spill [t0]=f9,Inc16;; stf.spill [t0]=f10,Inc16;; stf.spill [t0]=f11,Inc16;; stf.spill [t0]=f12,Inc16;; stf.spill [t0]=f13,Inc16;; stf.spill [t0]=f14,Inc16;; stf.spill [t0]=f15,Inc16;; mov t2=ar.unat;; st8 [t0]=t2,Inc8 // save User NaT bits for r16-r31 mov ar.unat=t3 // restore original unat br.dpnt osMcaDoneDump ;; //EndStub////////////////////////////////////////////////////////////////////// //++ // Name: // osMcaProcStateRestore() // // Stub Description: // // This is a stub to restore the saved processor state during MCHK // // On Entry: // // t0 = rPcrMcaStateDump. // // Return Value: // // None. //-- osMcaProcStateRestore:: // TF: ASSERT( t0 == rPcrMcaStateDump ) restore_BRs:: add t2=Inc8,t0 // duplicate t0 in t2 add t4=2*Inc8,t0;; // duplicate t0 in t2 ld8 t1=[t0],3*Inc8 ld8 t3=[t2],3*Inc8 ld8 t5=[t4],3*Inc8;; mov b0=t1 mov b1=t3 mov b2=t5;; ld8 t1=[t0],3*Inc8 ld8 t3=[t2],3*Inc8 ld8 t5=[t4],3*Inc8;; mov b3=t1 mov b4=t3 mov b5=t5;; ld8 t1=[t0],2*Inc8 ld8 t3=[t2],2*Inc8;; mov b6=t1 mov b7=t3;; restore_CRs:: add t2=Inc8,t0 // duplicate t0 in t2 add t4=2*Inc8,t0;; // duplicate t0 in t2 ld8 t1=[t0],8*Inc8 ld8 t3=[t2],3*Inc8 ld8 t5=[t4],3*Inc8;; // 48 byte increments mov cr0=t1 // cr.dcr mov cr1=t3 // cr.itm mov cr2=t5;; // cr.iva ld8 t1=[t0],8*Inc8;; // 64 byte increments // mov cr8=t1 // cr.pta // if PSR.ic=1, reading interruption registers causes an illegal operation fault mov t1=psr;; tbit.nz.unc pt0,p0=t1,PSRic;; // PSI Valid Log bit pos. test (pt0) st8 [t0]=r0,9*8+160 // increment by 160 byte inc. (pt0) br.dpnt rSkipIntrRegs ;; add t2=Inc8,t0 // duplicate t0 in t2 add t4=2*Inc8,t0;; // duplicate t0 in t2 ld8 t1=[t0],3*Inc8 ld8 t3=[t2],3*Inc8 ld8 t5=[t4],3*Inc8;; mov cr16=t1 // cr.ipsr mov cr17=t3 // cr.isr is read only // mov cr18=t5;; // cr.ida ld8 t1=[t0],3*Inc8 ld8 t3=[t2],3*Inc8 ld8 t5=[t4],3*Inc8;; mov cr19=t1 // cr.iip mov cr20=t3 // cr.idtr mov cr21=t5;; // cr.iitr ld8 t1=[t0],3*Inc8 ld8 t3=[t2],3*Inc8 ld8 t5=[t4],3*Inc8;; mov cr22=t1 // cr.iipa mov cr23=t3 // cr.ifs mov cr24=t5 // cr.iim ld8 t1=[t0],160;; // 160 byte increment mov cr25=t1 // cr.iha rSkipIntrRegs:: ld8 t1=[t0],168;; // another 168 byte inc. ld8 t1=[t0],40;; // 40 byte increment mov cr66=t1 // cr.lid ld8 t1=[t0],Inc8;; // mov cr71=t1 // cr.ivr is read only ld8 t1=[t0],24;; // 24 byte increment mov cr72=t1 // cr.tpr ld8 t1=[t0],168;; // 168 byte inc. // mov cr75=t1 // cr.eoi ld8 t1=[t0],Inc16;; // 16 byte inc. // mov cr96=t1 // cr.irr0 is read only ld8 t1=[t0],Inc16;; // 16 byte inc. // mov cr98=t1 // cr.irr1 is read only ld8 t1=[t0],Inc16;; // 16 byte inc // mov cr100=t1 // cr.irr2 is read only ld8 t1=[t0],Inc16;; // 16b inc. // mov cr102=t1 // cr.irr3 is read only ld8 t1=[t0],Inc16;; // 16 byte inc. // mov cr114=t1 // cr.itv ld8 t1=[t0],Inc8;; // mov cr116=t1 // cr.pmv ld8 t1=[t0],Inc8;; // mov cr117=t1 // cr.lrr0 ld8 t1=[t0],Inc8;; // mov cr118=t1 // cr.lrr1 ld8 t1=[t0],Inc8*10;; // mov cr119=t1 // cr.cmcv restore_ARs:: add t2=Inc8,t0 // duplicate t0 in t2 add t4=2*Inc8,t0;; // duplicate t0 in t2 ld8 t1=[t0],3*Inc8 ld8 t3=[t2],3*Inc8 ld8 t5=[t4],3*Inc8;; mov ar0=t1 // ar.kro mov ar1=t3 // ar.kr1 mov ar2=t5;; // ar.kr2 ld8 t1=[t0],3*Inc8 ld8 t3=[t2],3*Inc8 ld8 t5=[t4],3*Inc8;; mov ar3=t1 // ar.kr3 mov ar4=t3 // ar.kr4 mov ar5=t5;; // ar.kr5 ld8 t1=[t0],10*Inc8 ld8 t3=[t2],10*Inc8 ld8 t5=[t4],10*Inc8;; mov ar6=t1 // ar.kr6 mov ar7=t3 // ar.kr7 // mov ar8=t4 // ar.kr8 ;; ld8 t1=[t0],3*Inc8 ld8 t3=[t2],3*Inc8 ld8 t5=[t4],3*Inc8;; // mov ar16=t1 // ar.rsc // mov ar17=t3 // ar.bsp is read only mov ar18=t5;; // ar.bspstore ld8 t1=[t0],Inc8*13;; mov ar19=t1 // ar.rnat ld8 t1=[t0],Inc8*4;; mov ar32=t1 // ar.ccv ld8 t1=[t0],Inc8*4;; mov ar36=t1 // ar.unat ld8 t1=[t0],Inc8*4;; mov ar40=t1 // ar.fpsr ld8 t1=[t0],160;; // 160 // mov ar44=t1 // ar.itc ld8 t1=[t0],Inc8;; mov ar64=t1 // ar.pfs ld8 t1=[t0],Inc8;; mov ar65=t1 // ar.lc ld8 t1=[t0];; mov ar66=t1 // ar.ec adds t0=Inc8*62,t0;; // padding restore_RRs:: mov t3=ar.lc mov ar.lc=0x08-1 movl t2=0x00 cStRRr:: ld8 t1=[t0],Inc8;; // mov rr[t2]=t1 // what are its access previledges? add t2=1,t2 br.cloop.dpnt cStRRr ;; mov ar.lc=t3 // align memory addresses to 16 bytes and t1=0x0f,t0;; cmp.ne.unc pt0,p0=t1,r0;; (pt0) add t0=Inc8,t0;; // restore FP's which might be trashed by the "C" code mov t3=ar.unat add t1=16*10,t0;; // to get to NaT of GR 16-31 ld8 t1=[t1];; mov ar.unat=t1;; // first restore NaT restore_FRs:: ldf.fill f6=[t0],Inc16;; ldf.fill f7=[t0],Inc16;; ldf.fill f8=[t0],Inc16;; ldf.fill f9=[t0],Inc16;; ldf.fill f10=[t0],Inc16;; ldf.fill f11=[t0],Inc16;; ldf.fill f12=[t0],Inc16;; ldf.fill f13=[t0],Inc16;; ldf.fill f14=[t0],Inc16;; ldf.fill f15=[t0],Inc16;; mov ar.unat=t3 // restore original NaT br.dpnt osMcaDoneRestore ;; //EndStub////////////////////////////////////////////////////////////////////// //++ // VOID // HalpAcquireMcaSpinLock ( // IN PKSPIN_LOCK SpinLock // ) // // Routine Description: // // This function acquires a MCA spin lock. // This function does not modify the interrupt state or the IRQL. // // N.B: This function does *NOT* replace KiAcquireSpinLock but // allows us to place it in a locked MCA specific section. // // Arguments: // // SpinLock (a0) - Supplies a pointer to a MCA spin lock. // // Return Value: // // None. // //-- .align 16 LEAF_ENTRY(HalpAcquireMcaSpinLock) #if !defined(NT_UP) ACQUIRE_SPINLOCK(a0,a0,Halpasl10) br.ret.dptk brp ;; #else LEAF_RETURN #endif // !defined(NT_UP) LEAF_EXIT(HalpAcquireMcaSpinLock) //EndProc////////////////////////////////////////////////////////////////////// //++ // VOID // HalpReleaseMcaSpinLock ( // IN PKSPIN_LOCK SpinLock // ) // // Routine Description: // // This function release a MCA spin lock. // This function does not modify the interrupt state or the IRQL. // // N.B: This function does *NOT* replace KiReleaseSpinLock but // allows us to place it in a locked MCA specific section. // // Arguments: // // SpinLock (a0) - Supplies a pointer to a MCA spin lock. // // Return Value: // // None. // //-- .align 16 LEAF_ENTRY(HalpReleaseMcaSpinLock) #if !defined(NT_UP) st8.rel [a0] = zero // set spin lock not owned #endif LEAF_RETURN LEAF_EXIT(HalpReleaseMcaSpinLock) //EndProc////////////////////////////////////////////////////////////////////// //++ // Name: // HalpMCAEnable() // // Routine Description: // // This procedure enables MCA resources that are not already enabled. // // Arguments: // // None // // Return value: // // None // //-- .align 16 .proc HalpMCAEnable HalpMCAEnable:: NESTED_SETUP(0,2,0,0);; // nothing right now... NESTED_RETURN .endp HalpMCAEnable //EndProc//////////////////////////////////////////////////////////////////////