mirror of
https://github.com/elliotnunn/powermac-rom.git
synced 2024-06-07 08:30:20 +00:00
neaten kdp
This commit is contained in:
Elliot Nunn
parent
2bbb5c24c8
commit
681bd4e52f
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@ -11,7 +11,7 @@ ExceptionAfterRetry
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bcl BO_IF, bitFlag15, major_0x02980_0x100
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lwz r6, KDP.PA_ContextBlock(r1)
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lwz r6, KDP.CurCBPtr(r1)
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_bset r7, r16, 27
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@ -62,11 +62,11 @@ RunExceptionHandler
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li r8, 0 ; r8/Enables = 0 (handler must not throw exception)
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lwz r10, CB.ExceptionHandler(r6) ; r10/SRR0 = handler addr
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lwz r4, CB.ExceptionHandlerR4(r6) ; r4 = arbitrary second argument
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lwz r3, KDP.LA_ECB(r1) ; r3 = ContextBlock ptr
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lwz r3, KDP.ECBPtrLogical(r1) ; r3 = ContextBlock ptr
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bc BO_IF, bitFlagEmu, @sys
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lwz r3, KDP.NCBCacheLA0(r1)
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@sys
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lwz r12, KDP.LA_EmulatorKernelTrapTable + KCallTbl.ReturnFromException(r1)
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lwz r12, KDP.LA_EmuKCallTbl + KCallTbl.ReturnFromException(r1)
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; r12/LR = address of KCallReturnFromException trap
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bcl BO_IF, bitFlagLowSaves, PreferRegistersFromKDPSavingContextBlock ; ???
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@ -199,7 +199,7 @@ LoadInterruptRegisters
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stw r6, KDP.r6(r1)
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mfsprg r6, 1
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stw r6, KDP.r1(r1)
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lwz r6, KDP.PA_ContextBlock(r1)
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lwz r6, KDP.CurCBPtr(r1)
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stw r7, CB.r7(r6)
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stw r8, CB.r8(r6)
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stw r9, CB.r9(r6)
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@ -236,7 +236,7 @@ Exception
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########################################################################
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RunSystemContext
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lwz r9, KDP.PA_ECB(r1) ; System ("Emulator") ContextBlock
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lwz r9, KDP.ECBPtr(r1) ; System ("Emulator") ContextBlock
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addi r8, r1, KDP.VecTblSystem ; System VecTbl
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mtsprg 3, r8
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@ -315,8 +315,8 @@ SwitchContext ; OldCB *r6, NewCB *r9
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blel ResetDEC ; to r8
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lwz r8, CB.Flags(r9) ; r8 is the new Flags variable
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stw r9, KDP.PA_ContextBlock(r1)
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xoris r7, r7, 1 << (15 - bitFlagEmu) ; flip Emulator flag
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stw r9, KDP.CurCBPtr(r1)
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xoris r7, r7, 1 << (15 - bitFlagEmu) ; flip Emulator flag
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rlwimi r11, r8, 0, 20, 23 ; "enact" MSR[FE0/SE/BE/FE1]
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mr r6, r9 ; change the magic ContextBlock register
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rlwimi r7, r8, 0, 0x0000FFFF ; change bottom half of flags only
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@ -19,7 +19,7 @@ IntFPUnavail
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mfmsr r11 ; need this to access float registers
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_bset r11, r11, bitMsrFP
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lwz r6, KDP.PA_ContextBlock(r1)
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lwz r6, KDP.CurCBPtr(r1)
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mtmsr r11
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bl LoadFloats
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@ -143,20 +143,20 @@ CopyInfoRecords
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########################################################################
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InitKernelGlobals
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stw rCI, KDP.PA_ConfigInfo(r1)
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stw rCI, KDP.ConfigInfoPtr(r1)
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addi r12, r14, 1
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stw r12, KDP.SysInfo.HashTableSize(r11)
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addi rED, r1, 0x1000
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stw rED, KDP.PA_EmulatorData(r1)
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stw rED, KDP.EDPPtr(r1)
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stw r13, KDP.KernelMemoryBase(r1)
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add r12, r13, r15
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stw r12, KDP.KernelMemoryEnd(r1)
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lwz r12, NKConfigurationInfo.PA_RelocatedLowMemInit(rCI)
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stw r12, KDP.PA_RelocatedLowMemInit(r1)
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stw r12, KDP.LowMemPtr(r1)
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lwz r12, NKConfigurationInfo.SharedMemoryAddr(rCI)
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stw r12, KDP.SharedMemoryAddr(r1)
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@ -164,24 +164,24 @@ InitKernelGlobals
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lwz r12, NKConfigurationInfo.LA_EmulatorCode(rCI)
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lwz r11, NKConfigurationInfo.KernelTrapTableOffset(rCI)
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add r12, r12, r11
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stw r12, KDP.LA_EmulatorKernelTrapTable(r1)
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stw r12, KDP.LA_EmuKCallTbl(r1)
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bl * + 4
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mflr r12
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addi r12, r12, 4 - *
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stw r12, KDP.PA_NanoKernelCode(r1)
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stw r12, KDP.NKCodePtr(r1)
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_kaddr r12, r12, FDP
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stw r12, KDP.PA_FDP(r1)
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stw r12, KDP.RetryCodePtr(r1)
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lwz r12, NKConfigurationInfo.LA_EmulatorData(rCI)
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lwz r11, NKConfigurationInfo.ECBOffset(rCI)
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add r12, r12, r11
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stw r12, KDP.LA_ECB(r1)
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stw r12, KDP.ECBPtrLogical(r1)
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add r12, rED, r11
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stw r12, KDP.PA_ECB(r1)
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stw r12, KDP.PA_ContextBlock(r1)
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stw r12, KDP.ECBPtr(r1)
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stw r12, KDP.CurCBPtr(r1)
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lwz r12, NKConfigurationInfo.TestIntMaskInit(rCI)
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stw r12, KDP.TestIntMaskInit(r1)
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@ -192,7 +192,7 @@ InitKernelGlobals
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lwz r12, NKConfigurationInfo.IplValueOffset(rCI)
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add r12, rED, r12
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stw r12, KDP.PA_EmulatorIplValue(r1)
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stw r12, KDP.EmuIntLevelPtr(r1)
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lwz r12, NKConfigurationInfo.SharedMemoryAddr(rCI)
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addi r12, r12, 0x7c
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@ -203,9 +203,9 @@ InitKernelGlobals
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addi r13, r1, KDP.PageMap
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lwz r12, NKConfigurationInfo.PageMapInitSize(rCI)
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stw r13, KDP.PA_PageMapStart(r1)
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stw r13, KDP.PageMapStartPtr(r1)
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add r13, r13, r12
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stw r13, KDP.PA_PageMapEnd(r1)
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stw r13, KDP.PageMapEndPtr(r1)
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########################################################################
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@ -265,7 +265,7 @@ InitProcessorInfo
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mfpvr r12
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stw r12, KDP.ProcInfo.ProcessorVersionReg(r1)
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srwi r12, r12, 16
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lwz r11, KDP.PA_NanoKernelCode(r1)
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lwz r11, KDP.NKCodePtr(r1)
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addi r10, r1, KDP.ProcInfo.Ovr
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li r9, NKProcessorInfo.OvrEnd - NKProcessorInfo.Ovr
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_kaddr r11, r11, ProcessorInfoTable
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@ -358,7 +358,7 @@ InitEmulator
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stw r12, 12(r11)
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lwz r12, NKConfigurationInfo.LA_EmulatorCode(rCI) ; Prepare the System ContextBlock
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lwz r12, NKConfigurationInfo.LA_EmulatorCode(rCI) ; Prepare the System ContextBlock:
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lwz r11, NKConfigurationInfo.EmulatorEntryOffset(rCI)
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add r12, r11, r12
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lwz r11, NKConfigurationInfo.ECBOffset(rCI) ; address of declared Emu entry point
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@ -371,11 +371,11 @@ InitEmulator
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lwz r12, NKConfigurationInfo.LA_DispatchTable(rCI) ; address of 512kb Emu dispatch table
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stw r12, CB.ExceptionOriginR4(r11)
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lwz r12, KDP.LA_EmulatorKernelTrapTable(r1) ; address of KCallReturnFromException trap
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lwz r12, KDP.LA_EmuKCallTbl(r1) ; address of KCallReturnFromException trap
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stw r12, CB.ExceptionHandlerRetAddr(r11)
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lwz r10, KDP.PA_RelocatedLowMemInit(r1) ; Zero out bottom 8k of Low Memory
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lwz r10, KDP.LowMemPtr(r1) ; Zero out bottom 8k of Low Memory
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li r9, 0x2000
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@zeroloop
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subic. r9, r9, 4
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@ -384,7 +384,7 @@ InitEmulator
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lwz r11, NKConfigurationInfo.MacLowMemInitOffset(rCI) ; Read address/value pairs from ConfigInfo
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lwz r10, KDP.PA_RelocatedLowMemInit(r1) ; and apply them to Low Memory
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lwz r10, KDP.LowMemPtr(r1) ; and apply them to Low Memory
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lwzux r9, r11, rCI
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@setloop
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mr. r9, r9
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@ -406,7 +406,7 @@ InitEmulator
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stw r7, KDP.Flags(r1)
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lwz r10, KDP.LA_EmulatorKernelTrapTable(r1) ; Start at KCallReturnFromException trap
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lwz r10, KDP.LA_EmuKCallTbl(r1) ; Start at KCallReturnFromException trap
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mfmsr r14 ; Calculate the user space MSR
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@ -30,7 +30,7 @@ IntExternal0
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lwz r2, KDP.DebugIntPtr(r1) ; Query the shared mem (debug?) for int num
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mfcr r0
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lha r2, 0(r2)
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lwz r3, KDP.PA_EmulatorIplValue(r1)
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lwz r3, KDP.EmuIntLevelPtr(r1)
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rlwinm. r2, r2, 0, 0x80000007
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ori r2, r2, 0x8000
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sth r2, 0(r3)
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@ -97,11 +97,11 @@ IntExternal1
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lwz r4, KDP.r4(r1)
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lwz r5, KDP.r5(r1)
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lwz r3, KDP.PA_NanoKernelCode(r1) ; Loop that number up in the table
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lwz r3, KDP.NKCodePtr(r1) ; Loop that number up in the table
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rlwimi r3, r0, 0, 0x0000003F
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lbz r2, IntLookupTable-NKTop(r3)
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mfcr r0
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lwz r3, KDP.PA_EmulatorIplValue(r1)
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lwz r3, KDP.EmuIntLevelPtr(r1)
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clrlwi. r2, r2, 29
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sth r2, 0(r3)
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mfsprg r2, 2
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@ -179,7 +179,7 @@ IntExternal2
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; else -> 0
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@gotnum
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lwz r3, KDP.PA_EmulatorIplValue(r1)
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lwz r3, KDP.EmuIntLevelPtr(r1)
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sth r2, 0(r3)
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mfsprg r2, 2
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lwz r3, KDP.r3(r1)
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@ -282,7 +282,7 @@ IntDSI
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EmulateDataAccess
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rlwinm. r18, r27, 18, 25, 29 ; r16 = 4 * rA (r0 wired to 0)
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lwz r25, KDP.PA_FDP(r1)
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lwz r25, KDP.RetryCodePtr(r1)
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li r21, 0
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beq @r0
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lwzx r18, r1, r18
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@ -346,7 +346,7 @@ IntAlignment
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mfdar r18
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extrwi. r21, r27, 2, 15 ; evaluate hi two bits of XO (or 0 for d-form?)
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lwz r25, KDP.PA_FDP(r1)
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lwz r25, KDP.RetryCodePtr(r1)
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rlwinm r17, r27, 16, 0x03FF0000
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lwz r16, KDP.Flags(r1)
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rlwimi r25, r27, 24, 23, 29 ; add constant fields from dsisr (*4) to FDP
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@ -33,7 +33,7 @@ MaxVMCallCount equ 26
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KCallVMDispatch ; OUTSIDE REFERER
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stw r7, KDP.Flags(r1)
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lwz r7, KDP.PA_NanoKernelCode(r1)
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lwz r7, KDP.NKCodePtr(r1)
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cmplwi r3, MaxVMCallCount
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insrwi r7, r3, 7, 24
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lhz r8, VMDispatchTable - NKTop(r7)
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@ -114,7 +114,7 @@ VMReturn ; OUTSIDE REFERER
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lwz r15, KDP.r15(r1)
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lwz r16, KDP.r16(r1)
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lwz r7, KDP.Flags(r1)
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lwz r6, KDP.PA_ContextBlock(r1)
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lwz r6, KDP.CurCBPtr(r1)
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b IntReturn
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@ -213,7 +213,7 @@ PopulateHTAB ; LogicalAddress r28 // Success cr0.eq
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cmpwi cr7, r28, 0
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clrrwi r28, r31, 12
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cmpw r28, r1
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lwz r30, KDP.PA_ContextBlock(r1)
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lwz r30, KDP.CurCBPtr(r1)
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beq cr7, @rethink_pte_search
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addi r31, r30, 768-1
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@ -5,13 +5,13 @@
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; These registers will be used throughout
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rCI set r26
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lwz rCI, KDP.PA_ConfigInfo(r1)
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lwz rCI, KDP.ConfigInfoPtr(r1)
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rNK set r25
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lwz rNK, KDP.PA_NanoKernelCode(r1)
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lwz rNK, KDP.NKCodePtr(r1)
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rPgMap set r18
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lwz rPgMap, KDP.PA_PageMapStart(r1)
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lwz rPgMap, KDP.PageMapStartPtr(r1)
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rXER set r17
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mfxer rXER
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@ -148,25 +148,18 @@ InitKCalls
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########################################################################
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; Put HTABORG and PTEGMask in KDP, and zero out the last PTEG
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InitHTAB
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mfspr r8, sdr1
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; get settable HTABMASK bits
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rlwinm r22, r8, 16, 7, 15
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rlwinm r22, r8, 16, 7, 15 ; Get settable HTABMASK bits
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rlwinm r8, r8, 0, 0, 15 ; and HTABORG
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; and HTABORG
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rlwinm r8, r8, 0, 0, 15
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ori r22, r22, (-64) & 0xffff; "PTEGMask" from upper half of HTABMASK
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; get a PTEGMask from upper half of HTABMASK
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ori r22, r22, (-64) & 0xffff
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; Save in KDP (OldWorld must do this another way)
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stw r8, KDP.HTABORG(r1)
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stw r8, KDP.HTABORG(r1) ; Save
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stw r22, KDP.PTEGMask(r1)
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; zero out the last PTEG in the HTAB
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li r23, 0
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li r23, 0 ; Zero out the last PTEG in the HTAB
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addi r22, r22, 64
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@next_segment
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subic. r22, r22, 4
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@ -174,8 +167,7 @@ InitHTAB
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bgt @next_segment
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@skip_zeroing_pteg
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; Flush the TLB after touching the HTAB
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bl FlushTLB
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bl FlushTLB ; Flush the TLB after touching the HTAB
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########################################################################
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@ -228,7 +220,7 @@ CopyPageMap
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rlwimi r23, r1, 0, 0xFFFFF000
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stw r23, PME.PBaseAndFlags(r8)
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lwz r19, KDP.PA_EmulatorData(r1)
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lwz r19, KDP.EDPPtr(r1)
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lwz r8, NKConfigurationInfo.PageMapEDPOffset(rCI)
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add r8, rPgMap, r8
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lwz r23, PME.PBaseAndFlags(r8)
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@ -423,15 +415,15 @@ CreatePARInPageMap
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; Make sure some important areas of RAM are in the HTAB
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lwz r27, KDP.PA_ConfigInfo(r1)
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lwz r27, KDP.ConfigInfoPtr(r1)
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lwz r27, NKConfigurationInfo.LA_InterruptCtl(r27)
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bl PopulateHTAB
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lwz r27, KDP.PA_ConfigInfo(r1)
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lwz r27, KDP.ConfigInfoPtr(r1)
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lwz r27, NKConfigurationInfo.LA_KernelData(r27)
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bl PopulateHTAB
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lwz r27, KDP.PA_ConfigInfo(r1)
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lwz r27, KDP.ConfigInfoPtr(r1)
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lwz r27, NKConfigurationInfo.LA_EmulatorData(r27)
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bl PopulateHTAB
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@ -113,12 +113,12 @@ KCallRunAlternateContext
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addi r8, r1, KDP.VecTblAlternate ; the only use of this vector table?
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mtsprg 3, r8
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lwz r8, KDP.LA_EmulatorKernelTrapTable(r1)
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lwz r8, KDP.LA_EmuKCallTbl(r1)
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mtcrf 0x3f, r7
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clrlwi r7, r7, 8
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stw r8, CB.ExceptionHandlerRetAddr(r9)
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stw r9, KDP.PA_ContextBlock(r1)
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stw r9, KDP.CurCBPtr(r1)
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b SwitchContext ; OldCB *r6, NewCB *r9
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@ -329,7 +329,7 @@ IntProgram
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stw r6, KDP.r6(r1)
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mfsprg r6, 1
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stw r6, KDP.r1(r1)
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lwz r6, KDP.PA_ContextBlock(r1)
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lwz r6, KDP.CurCBPtr(r1)
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stw r7, CB.r7(r6)
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stw r8, CB.r8(r6)
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stw r9, CB.r9(r6)
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@ -339,7 +339,7 @@ IntProgram
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stw r13, CB.r13(r6)
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; Compare SRR0 with address of Emulator's KCall trap table
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lwz r8, KDP.LA_EmulatorKernelTrapTable(r1)
|
||||
lwz r8, KDP.LA_EmuKCallTbl(r1)
|
||||
mfsrr0 r10
|
||||
mfcr r13
|
||||
xor. r8, r10, r8
|
||||
|
|
|
|||
|
|
@ -190,36 +190,34 @@ CurrentMemLayout ds MemLayout ; 5e8:5f0
|
|||
|
||||
KCallTbl ds KCallTbl ; 5f0:630
|
||||
|
||||
PA_ConfigInfo ds.l 1 ; 630
|
||||
PA_EmulatorData ds.l 1 ; 634
|
||||
ConfigInfoPtr ds.l 1 ; 630
|
||||
EDPPtr ds.l 1 ; 634
|
||||
KernelMemoryBase ds.l 1 ; 638
|
||||
KernelMemoryEnd ds.l 1 ; 63c ; Top of HTAB (and entire kernel reserved area). Set by Init.s
|
||||
PA_RelocatedLowMemInit ds.l 1 ; 640 ; From ConfigInfo. Ptr to Mac LowMem vars, which Init.s sets up
|
||||
SharedMemoryAddr ds.l 1 ; 644 ; From ConfigInfo. Not sure what latest use is.
|
||||
LA_EmulatorKernelTrapTable ds.l 1 ; 648 ; Calculated from ConfigInfo.
|
||||
PA_NanoKernelCode ds.l 1 ; 64c ; Calculated by NanoKernel itself.
|
||||
PA_FDP ds.l 1 ; 650 ; See notes in NanoKernel. Very interesting.
|
||||
LA_ECB ds.l 1 ; 654 ; Logical ptr into EDP.
|
||||
PA_ECB ds.l 1 ; 658 ; gets called "system context"
|
||||
PA_ContextBlock ds.l 1 ; 65c ; moved to EWA (per-CPU) in NKv2
|
||||
KernelMemoryEnd ds.l 1 ; 63c
|
||||
LowMemPtr ds.l 1 ; 640 ; physical address of PAR Low Memory
|
||||
SharedMemoryAddr ds.l 1 ; 644 ; debug?
|
||||
EmuKCallTblPtrLogical ds.l 1 ; 648
|
||||
NKCodePtr ds.l 1 ; 64c
|
||||
RetryCodePtr ds.l 1 ; 650
|
||||
ECBPtrLogical ds.l 1 ; 654 ; Emulator/System ContextBlock
|
||||
ECBPtr ds.l 1 ; 658
|
||||
CurCBPtr ds.l 1 ; 65c ; moved to EWA (per-CPU) in NKv2
|
||||
Flags ds.l 1 ; 660 ; moved to EWA (per-CPU) in NKv2
|
||||
Enables ds.l 1 ; 664 ; moved to EWA (per-CPU) in NKv2
|
||||
OtherContextDEC ds.l 1 ; 668 ; ticks the *inactive* context has left out of 1s
|
||||
PA_PageMapEnd ds.l 1 ; 66c ; Set at the same time as PA_PageMapStart below...
|
||||
TestIntMaskInit ds.l 1 ; 670 ; These are all copied from ConfigInfo...
|
||||
PostIntMaskInit ds.l 1 ; 674
|
||||
ClearIntMaskInit ds.l 1 ; 678
|
||||
PA_EmulatorIplValue ds.l 1 ; 67c ; Physical ptr into EDP
|
||||
DebugIntPtr ds.l 1 ; 680 ; Within (debug?) shared memory
|
||||
PA_PageMapStart ds.l 1 ; 684 ; Physical ptr to PageMap (= KDP+0x920)
|
||||
PageAttributeInit ds.l 1 ; 688 ; defaults for page table entries (see ConfigInfo)
|
||||
|
||||
HtabTempPage ds.l 1 ; 68c
|
||||
HtabTempEntryPtr ds.l 1 ; 690
|
||||
OtherContextDEC ds.l 1 ; 668 ; ticks that the *inactive* context has left out of 1s
|
||||
PageMapEndPtr ds.l 1 ; 66c ; et at the same time as PageMapStartPtr below
|
||||
TestIntMaskInit ds.l 1 ; 670
|
||||
PostIntMaskInit ds.l 1 ; 674 ; CR flags to set when posting an interrupt to the Emulator
|
||||
ClearIntMaskInit ds.l 1 ; 678 ; CR flags to clear (as mask) when clearing an interrupt
|
||||
EmuIntLevelPtr ds.l 1 ; 67c ; physical ptr to an Emulator global
|
||||
DebugIntPtr ds.l 1 ; 680 ; within (debug?) shared memory
|
||||
PageMapStartPtr ds.l 1 ; 684
|
||||
PageAttributeInit ds.l 1 ; 688 ; defaults for PLE/PTE?
|
||||
HtabTempPage ds.l 1 ; 68c ; a page that lives temporarily in the HTAB (per its PME)
|
||||
HtabTempEntryPtr ds.l 1 ; 690 ; ptr to that PME
|
||||
NewestPageInHtab ds.l 1 ; 694
|
||||
ApproxCurrentPTEG ds.l 1 ; 698
|
||||
OverflowingPTEG ds.l 1 ; 69c
|
||||
|
||||
PTEGMask ds.l 1 ; 6a0
|
||||
HTABORG ds.l 1 ; 6a4
|
||||
VMLogicalPages ds.l 1 ; 6a8 ; set at init and changed by VMInit
|
||||
|
|
|
|||
|
|
@ -2146,7 +2146,7 @@ ProbePerfMonitor ; OUTSIDE REFERER
|
|||
|
||||
|
||||
; Temporarily disable program interrupts (leave old handler in r20)
|
||||
lwz r21, KDP.PA_NanoKernelCode(r1)
|
||||
lwz r21, KDP.NKCodePtr(r1)
|
||||
lwz r20, KDP.VecTblSystem.ProgramIntVector(r1)
|
||||
llabel r18, IgnoreSoftwareInt
|
||||
add r21, r18, r21
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user