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Reverse some VM functions (Daniel)
VeryPopularFunction (now GetPARPageInfo) takes a page number in the PAR and returns a bunch of info on it. The flags of the PTE are copied into cr5-cr7 of the condition register so that VMCalls can easily make decisions off of them. I had already figured out the bit flags of the PTEs Mac OS 9 uses when I reversed PagingFunc1. The definitions are in the end of the 'Area Definitions.txt' file I sent you a while ago. If you see a ' bltl cr5, VMDoSomethingWithTLB' (now RemovePageFromTLB) followed by a ' bltl cr5, major_0x09b40' (now RemovePTEFromHTAB), you know that the function is manipulating pages directly. RemovePageFromTLB clears a page from the TLB if it follows a VeryPopularFunction call. RemovePTEFromHTAB takes a page that is resident in the HTAB and removes its HTAB entry. cr5_lt is bit 20 (mask 0x800), which my notes tell me is set when the PTE is in the HTAB. Altogether, the sequence translates to 'if the page is in the HTAB, flush it from the TLB and delete its HTAB entry'. VMExchangePages uses this (twice) to make sure there are no race conditions when it is swapping the data in the pages. I still don't have proof, but I am very very strongly convinced that KDP.FlatPageListPointer is always equal to the PAR's PageMapArrayPtr. On an unrelated note, KCMapPage seems to always panic when called on an area where the PageMapArrayPtr is 2d. I have absolutely no idea why this happens, but it is bad news for MPMapper because the threshold for 2-dimensionality is around 1 MB. I would have to make 512 separate CreateArea calls to map all the memory without the NK panicking. I will have to look into this.
This commit is contained in:
Elliot Nunn
parent
9722f8ba5e
commit
a323be3c8b
@ -724,17 +724,17 @@ MPCall_0 ; OUTSIDE REFERER
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_Lock PSA.HTABLock, scratch1=r17, scratch2=r18
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bl VeryPopularFunction
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bl GetPARPageInfo
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bge- cr4, MPCall_0_0xd8
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bgt- cr5, MPCall_0_0xd8
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bns- cr7, MPCall_0_0xd8
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bgt- cr7, MPCall_0_0xd8
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bltl+ cr5, VMDoSomethingWithTLB
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bltl+ cr5, RemovePageFromTLB
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bgel+ cr5, VMSecondLastExportedFunc
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ori r16, r16, 0x404
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li r31, 0x03
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rlwimi r9, r31, 0, 30, 31
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bl VMDoSomeIO
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bl EditPTEInHTAB
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mr r7, r30
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mr r6, r29
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_AssertAndRelease PSA.HTABLock, scratch=r16
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@ -164,7 +164,7 @@ VMDispatchTableEnd
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; setPTEntryGivenPage
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; VMShouldClean
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; VMAllocateMemory
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; VeryPopularFunction
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; GetPARPageInfo
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; major_0x09c9c
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VMReturnMinus1 ; OUTSIDE REFERER
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@ -231,13 +231,13 @@ VMFinalInit ; OUTSIDE REFERER
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@loop
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srwi r4, r31, 12
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lwz r9, KDP.PrimaryAddrRangePages(r1)
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bl VeryPopularFunction
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bl GetPARPageInfo
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bge- cr4, @skip
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bltl- cr5, VMDoSomethingWithTLB
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bltl- cr5, RemovePageFromTLB
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bgel- cr5, VMSecondLastExportedFunc
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ori r16, r16, 0x400
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rlwimi r9, r29, 0, 0, 19
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bl major_0x09b40
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bl RemovePTEFromHTAB
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addi r31, r31, 0x1000
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cmplw r31, r30
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ble+ @loop
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@ -315,8 +315,8 @@ VMInit_0xa8
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rlwimi r3, r8, 21, 12, 15
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cmpw r3, r4
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bnel+ Local_Panic
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bl VMDoSomethingWithTLB
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bl major_0x09b40
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bl RemovePageFromTLB
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bl RemovePTEFromHTAB
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VMInit_0x100
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cmpwi r7, 0x00
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@ -514,26 +514,26 @@ VMInit_Fail
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DeclareVMCallWithAlt 12, VMExchangePages, VMReturnNotReady
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VMExchangePages ; OUTSIDE REFERER
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bl VeryPopularFunction
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bl GetPARPageInfo
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bge+ cr4, VMReturnMinus1
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bgt+ cr5, VMReturnMinus1
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bns+ cr7, VMReturnMinus1
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bgt+ cr6, VMReturnMinus1
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bne+ cr6, VMReturnMinus1
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bltl- cr5, VMDoSomethingWithTLB
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bltl- cr5, major_0x09b40
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bltl- cr5, RemovePageFromTLB
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bltl- cr5, RemovePTEFromHTAB
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mr r6, r15
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mr r4, r5
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mr r5, r16
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lwz r9, KDP.PrimaryAddrRangePages(r1)
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bl VeryPopularFunction
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bl GetPARPageInfo
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bge+ cr4, VMReturnMinus1
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bgt+ cr5, VMReturnMinus1
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bns+ cr7, VMReturnMinus1
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bgt+ cr6, VMReturnMinus1
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bne+ cr6, VMReturnMinus1
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bltl- cr5, VMDoSomethingWithTLB
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bltl- cr5, major_0x09b40
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bltl- cr5, RemovePageFromTLB
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bltl- cr5, RemovePTEFromHTAB
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stw r5, 0x0000(r15)
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stw r16, 0x0000(r6)
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rlwinm r4, r5, 0, 0, 19
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@ -578,7 +578,7 @@ VMGetPhysicalPage_0x28
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lwz r9, KDP.PrimaryAddrRangePages(r1)
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VMGetPhysicalPage_0x30
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bl VeryPopularFunction
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bl GetPARPageInfo
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bns+ cr7, VMReturnMinus1
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srwi r3, r9, 12
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b VMReturn
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@ -621,13 +621,13 @@ getPTEntryGivenPage_0x48
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lwz r9, KDP.PrimaryAddrRangePages(r1)
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getPTEntryGivenPage_0x50
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bl VeryPopularFunction
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bl GetPARPageInfo
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mr r3, r16
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bns- cr7, getPTEntryGivenPage_0x74
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rlwimi r3, r9, 0, 0, 19
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bge- cr5, getPTEntryGivenPage_0x74
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bl VMDoSomethingWithTLB
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bl VMDoSomeIO_0x4
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bl RemovePageFromTLB
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bl EditPTEOnlyInHTAB
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mr r3, r16
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rlwimi r3, r9, 0, 0, 19
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@ -713,7 +713,7 @@ major_0x08d88_0xb0 ; OUTSIDE REFERER
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DeclareVMCallWithAlt 5, VMIsInited, VMReturnNotReady
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VMIsInited ; OUTSIDE REFERER
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bl VeryPopularFunction
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bl GetPARPageInfo
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bso+ cr7, VMReturn1
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rlwinm r3, r16, 16, 31, 31
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b VMReturn
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@ -746,7 +746,7 @@ VMIsResident_0x28
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lwz r9, KDP.PrimaryAddrRangePages(r1)
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VMIsResident_0x30
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bl VeryPopularFunction
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bl GetPARPageInfo
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clrlwi r3, r16, 0x1f
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b VMReturn
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@ -757,12 +757,12 @@ VMIsResident_0x30
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DeclareVMCallWithAlt 4, VMIsUnmodified, VMReturnNotReady
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VMIsUnmodified ; OUTSIDE REFERER
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bl VeryPopularFunction
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bl GetPARPageInfo
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rlwinm r3, r16, 28, 31, 31
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xori r3, r3, 0x01
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bge+ cr5, VMReturn
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bl VMDoSomethingWithTLB
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bl VMDoSomeIO_0x4
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bl RemovePageFromTLB
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bl EditPTEOnlyInHTAB
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rlwinm r3, r16, 28, 31, 31
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xori r3, r3, 0x01
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b VMReturn
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@ -792,9 +792,9 @@ VMLRU_0x1c
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bge- cr5, VMLRU_0x50
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add r14, r14, r7
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lwz r8, 0x0000(r14)
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bl VMDoSomethingWithTLB
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bl RemovePageFromTLB
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andc r9, r9, r5
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bl major_0x09b40
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bl RemovePTEFromHTAB
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subf r14, r7, r14
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VMLRU_0x50
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@ -846,20 +846,20 @@ VMMakePageCacheable ; OUTSIDE REFERER
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bne- cr1, VMMakePageCacheable_0x4
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VMMakePageCacheable_0x4
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bl VeryPopularFunction
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bl GetPARPageInfo
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rlwinm r7, r16, 0, 25, 26
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cmpwi r7, 0x20
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bns+ cr7, VMReturnMinus1
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beq+ VMReturn
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bge- cr4, VMMakePageCacheable_0x40
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bltl- cr5, VMDoSomethingWithTLB
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bltl- cr5, RemovePageFromTLB
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bgel- cr5, VMSecondLastExportedFunc
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rlwinm r16, r16, 0, 27, 24
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rlwinm r9, r9, 0, 27, 24
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lwz r7, KDP.PageAttributeInit(r1)
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rlwimi r9, r7, 0, 27, 28
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ori r16, r16, 0x20
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bl VMDoSomeIO
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bl EditPTEInHTAB
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b VMReturn
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VMMakePageCacheable_0x40
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@ -922,19 +922,19 @@ VMMakePageWriteThrough ; OUTSIDE REFERER
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bne- cr1, VMMakePageWriteThrough_0x4
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VMMakePageWriteThrough_0x4
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bl VeryPopularFunction
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bl GetPARPageInfo
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rlwinm. r7, r16, 0, 25, 26
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bns+ cr7, VMReturnMinus1
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beq+ VMReturn
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bge- cr4, VMMakePageWriteThrough_0x3c
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bltl- cr5, VMDoSomethingWithTLB
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bltl- cr5, RemovePageFromTLB
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bgel- cr5, VMSecondLastExportedFunc
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rlwinm r16, r16, 0, 27, 24
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rlwinm r9, r9, 0, 27, 24
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lwz r7, KDP.PageAttributeInit(r1)
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rlwimi r9, r7, 0, 27, 28
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ori r9, r9, 0x40
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bl VMDoSomeIO
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bl EditPTEInHTAB
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b VMMakePageNonCacheable_0x3c
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VMMakePageWriteThrough_0x3c
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@ -1056,10 +1056,10 @@ PageSetCommon_0xc4
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addi r14, r14, 0x08
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PageSetCommon_0xc8
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bl VMDoSomethingWithTLB
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bl RemovePageFromTLB
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li r8, 0x00
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li r9, 0x00
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bl VMDoSomeIO_0x4
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bl EditPTEOnlyInHTAB
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b VMReturn
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@ -1072,20 +1072,20 @@ VMMakePageNonCacheable ; OUTSIDE REFERER
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bne- cr1, VMMakePageNonCacheable_0x4
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VMMakePageNonCacheable_0x4
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bl VeryPopularFunction
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bl GetPARPageInfo
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rlwinm r7, r16, 0, 25, 26
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cmpwi r7, 0x60
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bns+ cr7, VMReturnMinus1
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beq+ VMReturn
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bge- cr4, VMMakePageNonCacheable_0x78
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bltl- cr5, VMDoSomethingWithTLB
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bltl- cr5, RemovePageFromTLB
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bgel- cr5, VMSecondLastExportedFunc
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rlwinm r9, r9, 0, 27, 24
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lwz r7, KDP.PageAttributeInit(r1)
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rlwimi r9, r7, 0, 27, 28
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ori r16, r16, 0x60
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ori r9, r9, 0x20
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bl VMDoSomeIO
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bl EditPTEInHTAB
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VMMakePageNonCacheable_0x3c ; OUTSIDE REFERER
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rlwinm r4, r9, 0, 0, 19
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@ -1200,11 +1200,11 @@ VMMarkBacking_0x50
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lwz r9, KDP.PrimaryAddrRangePages(r1)
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VMMarkBacking_0x58
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bl VeryPopularFunction
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bl GetPARPageInfo
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bge+ cr4, VMReturnMinus1
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bgt+ cr5, VMReturnMinus1
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bltl- cr5, VMDoSomethingWithTLB
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bltl- cr5, major_0x09b40
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bltl- cr5, RemovePageFromTLB
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bltl- cr5, RemovePTEFromHTAB
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rlwimi r16, r5, 16, 15, 15
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li r7, 0x01
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andc r16, r16, r7
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@ -1218,16 +1218,16 @@ VMMarkBacking_0x58
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DeclareVMCallWithAlt 9, VMMarkCleanUnused, VMReturnNotReady
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VMMarkCleanUnused ; OUTSIDE REFERER
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bl VeryPopularFunction
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bl GetPARPageInfo
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bge+ cr4, VMReturnMinus1
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bns+ cr7, VMReturnMinus1
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bltl- cr5, VMDoSomethingWithTLB
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bltl- cr5, RemovePageFromTLB
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beq- cr2, VMMarkCleanUnused_0x2c
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bgel- cr5, VMSecondLastExportedFunc
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li r7, 0x180
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andc r9, r9, r7
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ori r16, r16, 0x100
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bl VMDoSomeIO
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bl EditPTEInHTAB
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b VMReturn
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VMMarkCleanUnused_0x2c
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@ -1235,7 +1235,7 @@ VMMarkCleanUnused_0x2c
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ori r16, r16, 0x100
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li r7, 0x18
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andc r16, r16, r7
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bl major_0x09b40
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bl RemovePTEFromHTAB
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b VMReturn
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@ -1303,7 +1303,7 @@ VMMarkResident_0x50
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lwz r9, KDP.PrimaryAddrRangePages(r1)
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VMMarkResident_0x58
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bl VeryPopularFunction
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bl GetPARPageInfo
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bge+ cr4, VMReturnMinus1
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bso+ cr7, VMReturnMinus1
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bltl+ cr5, Local_Panic
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@ -1311,7 +1311,7 @@ VMMarkResident_0x58
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ori r16, r16, 0x01
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stw r16, 0x0000(r15)
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bl VMSecondLastExportedFunc
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bl VMDoSomeIO
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bl EditPTEInHTAB
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b VMReturn
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@ -1325,7 +1325,7 @@ VMPTest ; OUTSIDE REFERER
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cmplw r4, r9
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li r3, 0x4000
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bge+ VMReturn
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bl VeryPopularFunction
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bl GetPARPageInfo
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li r3, 0x400
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bns+ cr7, VMReturn
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li r3, 0x00
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@ -1381,7 +1381,7 @@ setPTEntryGivenPage_0x5c
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setPTEntryGivenPage_0x64
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mr r6, r4
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mr r4, r5
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bl VeryPopularFunction
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bl GetPARPageInfo
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bge+ cr4, VMReturnMinus1
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xor r7, r16, r6
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li r3, 0x461
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@ -1392,19 +1392,19 @@ setPTEntryGivenPage_0x64
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xor r16, r16, r7
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stw r16, 0x0000(r15)
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bge+ cr5, VMReturn
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bl VMDoSomethingWithTLB
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bl RemovePageFromTLB
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lwz r16, 0x0000(r15)
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bne- cr2, setPTEntryGivenPage_0xb4
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andi. r7, r16, 0x08
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bne- setPTEntryGivenPage_0xb4
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bl major_0x09b40
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bl RemovePTEFromHTAB
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b VMReturn
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setPTEntryGivenPage_0xb4
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rlwimi r9, r16, 5, 23, 23
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rlwimi r9, r16, 3, 24, 24
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rlwimi r9, r16, 30, 31, 31
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bl VMDoSomeIO_0x4
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bl EditPTEOnlyInHTAB
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b VMReturn
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@ -1414,10 +1414,10 @@ setPTEntryGivenPage_0xb4
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DeclareVMCallWithAlt 6, VMShouldClean, VMReturnNotReady
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VMShouldClean ; OUTSIDE REFERER
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bl VeryPopularFunction
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bl GetPARPageInfo
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bns+ cr7, VMReturn0
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bge+ cr4, VMReturnMinus1
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bltl- cr5, VMDoSomethingWithTLB
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bltl- cr5, RemovePageFromTLB
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blt- cr7, VMShouldClean_0x34
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bns- cr6, VMShouldClean_0x34
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xori r16, r16, 0x10
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@ -1425,11 +1425,11 @@ VMShouldClean ; OUTSIDE REFERER
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stw r16, 0x0000(r15)
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bge+ cr5, VMReturn1
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xori r9, r9, 0x80
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bl VMDoSomeIO_0x4
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bl EditPTEOnlyInHTAB
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b VMReturn1
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VMShouldClean_0x34
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bltl- cr5, VMDoSomeIO_0x4
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bltl- cr5, EditPTEOnlyInHTAB
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b VMReturn0
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@ -1473,9 +1473,9 @@ VMAllocateMemory_0x6c
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VMAllocateMemory_0x74
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addi r4, r4, -0x01
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bl VeryPopularFunction
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bltl- cr5, VMDoSomethingWithTLB
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bltl- cr5, major_0x09b40
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bl GetPARPageInfo
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bltl- cr5, RemovePageFromTLB
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bltl- cr5, RemovePTEFromHTAB
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lwz r9, KDP.PrimaryAddrRangePages(r1)
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subf r8, r4, r9
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cmplw cr7, r5, r8
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@ -1684,87 +1684,72 @@ VMAllocateMemory_0x360
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; VeryPopularFunction
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;This function gets sent an page# for a page in the main mac os memory area and returns a bunch of useful info on it.
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;Return values that mention HTAB are undefined when the PTE is not in the HTAB
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;HTAB residence is determined by bit 20 (value 0x800) of the PTE. This is often checked by a bltl cr5
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; Xrefs:
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; VMFinalInit
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; VMExchangePages
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; VMGetPhysicalPage
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; getPTEntryGivenPage
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; VMIsInited
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; VMIsResident
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; VMIsUnmodified
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; VMMakePageCacheable
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; VMMakePageWriteThrough
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; VMMakePageNonCacheable
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; VMMarkBacking
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; VMMarkCleanUnused
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; VMMarkResident
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; VMPTest
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; setPTEntryGivenPage
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; VMShouldClean
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; VMAllocateMemory
|
||||
; VMLastExportedFunc
|
||||
; major_0x0b144
|
||||
; ARG page# r4, KDP.VMMaxVirtualPages r9,
|
||||
; RET PTE_flags CR, HTAB_upper r8, HTAB_lower r9, PTE_value r16, HTAB_entry_loc r14, PTE_loc r15,
|
||||
|
||||
VeryPopularFunction ; OUTSIDE REFERER
|
||||
cmplw cr4, r4, r9
|
||||
|
||||
GetPARPageInfo ; OUTSIDE REFERER
|
||||
cmplw cr4, r4, r9 ;r9 is VMMaxVirtualPages by convention
|
||||
lwz r15, KDP.FlatPageListPtr(r1)
|
||||
slwi r8, r4, 2
|
||||
bge- cr4, VeryPopularFunction_0x40
|
||||
bge- cr4, GetPARPageInfo_0x40
|
||||
|
||||
VeryPopularFunction_0x10
|
||||
lwzux r16, r15, r8
|
||||
lwz r14, KDP.HTABORG(r1)
|
||||
mtcrf 0x07, r16
|
||||
rlwinm r8, r16, 23, 9, 28
|
||||
rlwinm r9, r16, 0, 0, 19
|
||||
bgelr- cr5
|
||||
lwzux r8, r14, r8
|
||||
lwz r9, 0x0004(r14)
|
||||
GetPARPageInfo_0x10
|
||||
lwzux r16, r15, r8 ;get PTE from KDP.FlatPageListPointer
|
||||
lwz r14, KDP.HTABORG(r1)
|
||||
mtcrf 0x07, r16 ;copy bits 20-31 to cr
|
||||
rlwinm r8, r16, 23, 9, 28;convert page# into an index
|
||||
rlwinm r9, r16, 0, 0, 19;get unshifted page#
|
||||
bgelr- cr5 ;return if PTE is not in HTAB
|
||||
lwzux r8, r14, r8 ;get first word of PTE from HTAB
|
||||
lwz r9, 0x0004(r14);get second word of PTE from HTAB
|
||||
mtcrf 0x80, r8
|
||||
bns+ cr7, Local_Panic
|
||||
bltlr-
|
||||
bl Local_Panic
|
||||
bns+ cr7, Local_Panic;panic if the PTE is in the HTAB but isn't mapped to a real page
|
||||
bltlr- ;return if PTE is valid
|
||||
bl Local_Panic;panic if PTE isn't valid but is in the HTAB
|
||||
|
||||
VeryPopularFunction_0x40
|
||||
lwz r9, KDP.VMMaxVirtualPages(r1)
|
||||
GetPARPageInfo_0x40 ;some kind of little-used code path for when VMMaxVirtualPages is invalid? ROM overlay?
|
||||
lwz r9, KDP.VMMaxVirtualPages(r1)
|
||||
cmplw cr4, r4, r9
|
||||
rlwinm. r9, r4, 0, 0, 11
|
||||
blt+ cr4, VMReturnMinus1
|
||||
bne+ VMReturnMinus1
|
||||
lwz r15, 0x05e8(r1)
|
||||
rlwinm r9, r4, 19, 25, 28
|
||||
lwzx r15, r15, r9
|
||||
clrlwi r9, r4, 0x10
|
||||
blt+ cr4, VMReturnMinus1;return failure if r4<VMMaxVirtualPages
|
||||
bne+ VMReturnMinus1 ;return failure if bits 0-11 of r4 are non-zero
|
||||
lwz r15, 0x05e8(r1);this appears to be an array of 8-byte structures.
|
||||
rlwinm r9, r4, 19, 25, 28;copy bits 12-15 or r4 to bits 25-28 of r9
|
||||
lwzx r15, r15, r9 ;do an index for some reason
|
||||
clrlwi r9, r4, 0x10 ;copy bits 16-31 to r9
|
||||
lhz r8, 0x0000(r15)
|
||||
b VeryPopularFunction_0x70
|
||||
b GetPARPageInfo_0x70
|
||||
|
||||
VeryPopularFunction_0x6c
|
||||
GetPARPageInfo_0x6c
|
||||
lhzu r8, 0x0008(r15)
|
||||
|
||||
VeryPopularFunction_0x70
|
||||
GetPARPageInfo_0x70
|
||||
lhz r16, 0x0002(r15)
|
||||
subf r8, r8, r9
|
||||
cmplw cr4, r8, r16
|
||||
bgt+ cr4, VeryPopularFunction_0x6c
|
||||
bgt+ cr4, GetPARPageInfo_0x6c
|
||||
lwz r9, 0x0004(r15)
|
||||
andi. r16, r9, 0xc00
|
||||
cmpwi cr6, r16, 0x400
|
||||
cmpwi cr7, r16, 0xc00
|
||||
beq- VeryPopularFunction_0xac
|
||||
beq- cr6, VeryPopularFunction_0xb4
|
||||
beq- GetPARPageInfo_0xac
|
||||
beq- cr6, GetPARPageInfo_0xb4
|
||||
bne+ cr7, VMReturnMinus1
|
||||
slwi r8, r8, 2
|
||||
rlwinm r15, r9, 22, 0, 29
|
||||
crset cr4_lt
|
||||
b VeryPopularFunction_0x10
|
||||
b GetPARPageInfo_0x10
|
||||
|
||||
VeryPopularFunction_0xac
|
||||
GetPARPageInfo_0xac
|
||||
slwi r8, r8, 12
|
||||
add r9, r9, r8
|
||||
|
||||
VeryPopularFunction_0xb4
|
||||
GetPARPageInfo_0xb4
|
||||
rlwinm r16, r9, 0, 0, 19
|
||||
crclr cr4_lt
|
||||
rlwinm r9, r9, 0, 22, 19
|
||||
@ -1780,40 +1765,24 @@ VeryPopularFunction_0xb4
|
||||
|
||||
|
||||
|
||||
; VMDoSomethingWithTLB
|
||||
|
||||
; Xrefs:
|
||||
; VMFinalInit
|
||||
; VMInit
|
||||
; VMExchangePages
|
||||
; getPTEntryGivenPage
|
||||
; VMIsUnmodified
|
||||
; VMLRU
|
||||
; VMMakePageCacheable
|
||||
; VMMakePageWriteThrough
|
||||
; PageSetCommon
|
||||
; VMMakePageNonCacheable
|
||||
; VMMarkBacking
|
||||
; VMMarkCleanUnused
|
||||
; setPTEntryGivenPage
|
||||
; VMShouldClean
|
||||
; VMAllocateMemory
|
||||
; VMLastExportedFunc
|
||||
; major_0x0b144
|
||||
|
||||
VMDoSomethingWithTLB ; OUTSIDE REFERER
|
||||
;invalidates TLB entry for page?
|
||||
;registers are assumed to be unmodified after call to VeryPopularFunction
|
||||
;r4 is address
|
||||
;r14 is address of HTAB entry
|
||||
;r8 is upper word of HTAB entry
|
||||
RemovePageFromTLB ; OUTSIDE REFERER
|
||||
mfpvr r9
|
||||
clrlwi r8, r8, 0x01
|
||||
clrlwi r8, r8, 0x01 ;clear valid bit from upper word of HTAB entry
|
||||
rlwinm. r9, r9, 0, 0, 14
|
||||
stw r8, 0x0000(r14)
|
||||
slwi r9, r4, 12
|
||||
stw r8, 0x0000(r14);store invalidated version of entry
|
||||
slwi r9, r4, 12 ;get page number of address
|
||||
sync
|
||||
tlbie r9
|
||||
beq- VMDoSomethingWithTLB_0x28
|
||||
beq- @is_601
|
||||
sync
|
||||
tlbsync
|
||||
|
||||
VMDoSomethingWithTLB_0x28
|
||||
@is_601
|
||||
sync
|
||||
isync
|
||||
lwz r9, 0x0004(r14)
|
||||
@ -1821,69 +1790,50 @@ VMDoSomethingWithTLB_0x28
|
||||
rlwimi r16, r9, 29, 27, 27
|
||||
rlwimi r16, r9, 27, 28, 28
|
||||
mtcrf 0x07, r16
|
||||
blr
|
||||
blr
|
||||
|
||||
|
||||
|
||||
; VMDoSomeIO
|
||||
|
||||
; Xrefs:
|
||||
; getPTEntryGivenPage
|
||||
; VMIsUnmodified
|
||||
; VMMakePageCacheable
|
||||
; VMMakePageWriteThrough
|
||||
; PageSetCommon
|
||||
; VMMakePageNonCacheable
|
||||
; VMMarkCleanUnused
|
||||
; VMMarkResident
|
||||
; setPTEntryGivenPage
|
||||
; VMShouldClean
|
||||
; major_0x09b40
|
||||
; major_0x0b144
|
||||
|
||||
VMDoSomeIO ; OUTSIDE REFERER
|
||||
;updates stored PTE and HTAB entry for PTE
|
||||
;r16 is PTE value
|
||||
;r15 is address of stored PTE
|
||||
;r8 is lower word of HTAB entry
|
||||
;r9 is upper word of HTAB entry
|
||||
;r14 is address of HTAB entry
|
||||
EditPTEInHTAB ; OUTSIDE REFERER
|
||||
stw r16, 0x0000(r15)
|
||||
|
||||
VMDoSomeIO_0x4 ; OUTSIDE REFERER
|
||||
stw r9, 0x0004(r14)
|
||||
;just updates HTAB entry
|
||||
EditPTEOnlyInHTAB ; OUTSIDE REFERER
|
||||
stw r9, 0x0004(r14);upper word of HTAB entry contains valid bit
|
||||
eieio
|
||||
stw r8, 0x0000(r14)
|
||||
sync
|
||||
blr
|
||||
blr
|
||||
|
||||
|
||||
|
||||
; major_0x09b40
|
||||
|
||||
; Xrefs:
|
||||
; VMFinalInit
|
||||
; VMInit
|
||||
; VMExchangePages
|
||||
; VMLRU
|
||||
; VMMakePageCacheable
|
||||
; VMMakePageWriteThrough
|
||||
; VMMakePageNonCacheable
|
||||
; VMMarkBacking
|
||||
; VMMarkCleanUnused
|
||||
; VMMarkResident
|
||||
; setPTEntryGivenPage
|
||||
; VMAllocateMemory
|
||||
; major_0x0b144
|
||||
|
||||
major_0x09b40 ; OUTSIDE REFERER
|
||||
lwz r8, 0x0e98(r1)
|
||||
rlwinm r16, r16, 0, 21, 19
|
||||
;Removes a page from the HTAB.
|
||||
;Called right after GetPARPageInfo, with either a bl or a bltl cr5
|
||||
;
|
||||
;also updates NK statistics?
|
||||
;r9 is low word of HTAB entry
|
||||
;r14 ia address of HTAB entry
|
||||
;r15 is address of stored PTE
|
||||
;r16 is PTE value
|
||||
RemovePTEFromHTAB ; OUTSIDE REFERER
|
||||
lwz r8, 0x0e98(r1);update a value in NanoKernelInfo
|
||||
rlwinm r16, r16, 0, 21, 19 ;update PTE flags to indicate not in HTAB
|
||||
addi r8, r8, 0x01
|
||||
stw r8, 0x0e98(r1)
|
||||
rlwimi r16, r9, 0, 0, 19
|
||||
rlwimi r16, r9, 0, 0, 19 ;move page# back into PTE
|
||||
li r8, -0x01
|
||||
stw r8, 0x0340(r1)
|
||||
stw r8, 0x0348(r1)
|
||||
stw r8, 0x0350(r1)
|
||||
stw r8, 0x0358(r1)
|
||||
li r8, 0x00
|
||||
li r9, 0x00
|
||||
b VMDoSomeIO
|
||||
stw r8, KDP. MinusOne1(r1)
|
||||
stw r8, KDP. MinusOne2(r1)
|
||||
stw r8, KDP. MinusOne3(r1)
|
||||
stw r8, KDP. MinusOne4(r1)
|
||||
li r8, 0x00 ;0 upper HTAB word
|
||||
li r9, 0x00 ;0 lower HTAB word
|
||||
b EditPTEInHTAB ;update stored PTE and invalidate HTAB entry
|
||||
|
||||
VMSecondLastExportedFunc ; OUTSIDE REFERER
|
||||
lwz r8, KDP.PTEGMask(r1)
|
||||
@ -1893,7 +1843,7 @@ VMSecondLastExportedFunc ; OUTSIDE REFERER
|
||||
; VMLastExportedFunc
|
||||
|
||||
; Xrefs:
|
||||
; major_0x09b40
|
||||
; RemovePTEFromHTAB
|
||||
|
||||
|
||||
VMLastExportedFunc
|
||||
@ -1977,9 +1927,9 @@ VMLastExportedFunc_0xd7
|
||||
mr r28, r16
|
||||
mr r26, r14
|
||||
lwz r9, KDP.PrimaryAddrRangePages(r1)
|
||||
bl VeryPopularFunction
|
||||
bl GetPARPageInfo
|
||||
mtlr r6
|
||||
b VMDoSomethingWithTLB
|
||||
b RemovePageFromTLB
|
||||
|
||||
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user