mirror of
https://github.com/elliotnunn/powermac-rom.git
synced 2025-02-27 12:29:41 +00:00
Start to reverse the legacy VM subsystem
This commit is contained in:
Elliot Nunn
parent
7fdc813d8f
commit
9722f8ba5e
@ -591,7 +591,7 @@ PageAttributeInit ds.l 1 ; 688 ; defaults for page table entries (see ConfigInf
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ds.l 1 ; 69c
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PTEGMask ds.l 1 ; 6a0
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HTABORG ds.l 1 ; 6a4
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UsablePhysicalPages ds.l 1 ; 6a8 ; does take MacOS into account
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PrimaryAddrRangePages ds.l 1 ; 6a8 ; set at init and changed by VMInit
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TotalPhysicalPages ds.l 1 ; 6ac ; does not take into acct maximum MacOS memory
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FlatPageListPtr ds.l 1 ; 6b0
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VMMaxVirtualPages ds.l 1 ; 6b4 ; size of main contiguous segment?
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@ -600,8 +600,8 @@ CpuSpecificByte1 ds.b 1 ; 6b8 ; seems to contain flags (set from PVR & tbl by I
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CpuSpecificByte2 ds.b 1 ; 6b9 ; probably not flags (set in same way)
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ds.b 1 ; 6ba
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ds.b 1 ; 6bb
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FlatPageListSegPtrs ds.l 16 ; 6bc
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ds.l 1 ; 6fc
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ds.l 1 ; 6bc
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FlatPageListSegPtrs ds.l 16 ; 6c0
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StartOfPanicArea ; PROTECTED BY THUD LOCK
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ThudSavedR0 ds.l 1 ; 700
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@ -1772,9 +1772,9 @@ ReconcileMemory
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; The above, divided by 4096
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srwi r19, r19, 12
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stw r19, KDP.UsablePhysicalPages(r1)
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stw r19, KDP.PrimaryAddrRangePages(r1)
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addi r29, r1, KDP.FlatPageListSegPtrs
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addi r29, r1, KDP.FlatPageListSegPtrs - 4
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addi r19, r1, KDP.SegMaps - 8
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@ -1802,7 +1802,7 @@ ReconcileMemory
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; Number of pages in that last segment
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sth r22, 0x0002(r8)
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lwz r17, KDP.UsablePhysicalPages(r1)
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lwz r17, KDP.PrimaryAddrRangePages(r1)
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lwz r18, KDP.TotalPhysicalPages(r1)
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stw r17, KDP.TotalPhysicalPages(r1)
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@ -93,7 +93,7 @@ VMDispatchTableEnd
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@noalt
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lwzx r8, r8, r7
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lwz r9, KDP.UsablePhysicalPages(r1)
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lwz r9, KDP.PrimaryAddrRangePages(r1)
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add r8, r8, r7
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mtlr r8
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bltlr-
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@ -230,7 +230,7 @@ VMFinalInit ; OUTSIDE REFERER
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@loop
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srwi r4, r31, 12
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lwz r9, KDP.UsablePhysicalPages(r1)
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lwz r9, KDP.PrimaryAddrRangePages(r1)
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bl VeryPopularFunction
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bge- cr4, @skip
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bltl- cr5, VMDoSomethingWithTLB
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@ -260,17 +260,21 @@ VMInit ; OUTSIDE REFERER
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mr r8, r5
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bl printw
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_log '^n'
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lwz r7, KDP.FlatPageListPtr(r1)
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lwz r8, 0x06c0(r1)
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lwz r7, KDP.FlatPageListPtr(r1) ; check that zero seg isn't empty
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lwz r8, KDP.FlatPageListSegPtrs + 0(r1)
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cmpw r7, r8
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bne+ VMReturn1
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stw r4, 0x06a8(r1)
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stw r5, KDP.FlatPageListPtr(r1)
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stw r4, KDP.PrimaryAddrRangePages(r1) ; resize PAR
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stw r5, KDP.FlatPageListPtr(r1) ; where did NK find this???
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lwz r6, 0x05e8(r1)
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li r5, 0x00
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li r4, 0x00
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VMInit_0x60
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VMInit_BigLoop
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lwz r8, 0x0000(r6)
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addi r6, r6, 0x08
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lhz r3, 0x0000(r8)
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@ -297,7 +301,7 @@ VMInit_0xa8
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beql+ Local_Panic
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andi. r3, r16, 0x800
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beq- VMInit_0x100
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lwz r14, 0x06a4(r1)
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lwz r14, KDP.HTABORG(r1)
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rlwinm r3, r16, 23, 9, 28
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lwzux r8, r14, r3
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lwz r9, 0x0004(r14)
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@ -321,35 +325,46 @@ VMInit_0x100
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bne+ VMInit_0xa8
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VMInit_0x110
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lwz r7, 0x06b4(r1)
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lwz r7, KDP.VMMaxVirtualPages(r1)
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addi r5, r5, 0x01
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addi r7, r7, -0x01
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srwi r7, r7, 16
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cmpw r5, r7
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ble+ VMInit_0x60
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lwz r7, 0x06ac(r1)
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ble+ VMInit_BigLoop
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lwz r7, KDP.TotalPhysicalPages(r1)
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cmpw r4, r7
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bnel+ Local_Panic
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lwz r5, KDP.FlatPageListPtr(r1)
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lwz r4, 0x06a8(r1)
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lwz r4, KDP.PrimaryAddrRangePages(r1)
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andi. r7, r5, 0xfff
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li r3, 0x02
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bne- VMInit_0x374
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lwz r7, 0x06b4(r1)
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bne- VMInit_Fail
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lwz r7, KDP.VMMaxVirtualPages(r1)
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cmplw r7, r4
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li r3, 0x03
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blt- VMInit_0x374
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blt- VMInit_Fail
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addi r7, r4, 0x3ff
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srwi r6, r7, 10
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srwi r8, r5, 12
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add r8, r8, r6
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lwz r9, 0x06ac(r1)
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lwz r9, KDP.TotalPhysicalPages(r1)
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cmplw r8, r9
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li r3, 0x04
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bgt- VMInit_0x374
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bgt- VMInit_Fail
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cmplw r4, r9
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li r3, 0x05
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blt- VMInit_0x374
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blt- VMInit_Fail
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srwi r7, r5, 12
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bl major_0x09c9c
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stw r9, KDP.FlatPageListPtr(r1)
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@ -362,9 +377,11 @@ VMInit_0x110
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srwi r9, r9, 12
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addi r9, r9, 0x01
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cmpw r9, r6
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li r3, 0x06
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bne- VMInit_0x374
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stw r4, 0x06a8(r1)
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bne- VMInit_Fail
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stw r4, KDP.PrimaryAddrRangePages(r1)
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lwz r8, -0x0020(r1)
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slwi r7, r4, 12
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stw r7, 0x0dc8(r8)
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@ -376,7 +393,7 @@ VMInit_0x1d4
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cmpwi r7, 0x00
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stwx r8, r15, r7
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bne+ VMInit_0x1d4
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lwz r7, 0x06ac(r1)
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lwz r7, KDP.TotalPhysicalPages(r1)
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slwi r6, r7, 2
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VMInit_0x1ec
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@ -390,7 +407,7 @@ VMInit_0x1ec
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lwz r15, KDP.FlatPageListPtr(r1)
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srwi r7, r5, 10
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add r15, r15, r7
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lwz r5, 0x06a8(r1)
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lwz r5, KDP.PrimaryAddrRangePages(r1)
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VMInit_0x218
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lwz r16, 0x0000(r15)
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@ -402,7 +419,7 @@ VMInit_0x218
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cmpwi r5, 0x00
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addi r15, r15, 0x04
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bgt+ VMInit_0x218
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lwz r9, 0x06b4(r1)
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lwz r9, KDP.VMMaxVirtualPages(r1)
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lwz r6, 0x05e8(r1)
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addi r9, r9, -0x01
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li r8, 0xa00
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@ -421,7 +438,7 @@ VMInit_0x250
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sth r9, 0x0002(r3)
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sth r9, 0x000a(r3)
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lwz r6, 0x05e8(r1)
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lwz r9, 0x06a8(r1)
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lwz r9, KDP.PrimaryAddrRangePages(r1)
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lwz r15, KDP.FlatPageListPtr(r1)
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VMInit_0x288
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@ -441,48 +458,53 @@ VMInit_0x29c
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addis r15, r15, 0x04
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addi r6, r6, 0x08
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bne+ VMInit_0x288
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mfsprg r9, 0
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lwz r6, -0x0014(r9)
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; r6 = ewa
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bl Save_r14_r31
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; r8 = sprg0 (not used by me)
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lwz r6, EWA.PA_ContextBlock(r9)
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bl Save_r14_r31 ; need some registers
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lwz r8, -0x001c(r9)
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li r9, 0x00
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bl FindAreaAbove
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lwz r16, 0x0024(r8)
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cmpwi r16, 0x00
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bne+ Local_Panic
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li r16, 0x00
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stw r16, 0x003c(r8)
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lwz r16, KDP.FlatPageListPtr(r1)
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stw r16, 0x0040(r8)
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lwz r16, 0x06a8(r1)
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lwz r8, EWA.PA_CurAddressSpace(r9)
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li r9, 0
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bl FindAreaAbove ; find the PAR
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lwz r16, Area.LogicalBase(r8)
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cmpwi r16, 0
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bne+ Local_Panic ; better be at address 0
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li r16, 0
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stw r16, Area.FaultCtrArrayPtr(r8)
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lwz r16, KDP.FlatPageListPtr(r1)
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stw r16, Area.PageMapArrayPtr(r8)
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lwz r16, KDP.PrimaryAddrRangePages(r1)
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slwi r16, r16, 12
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stw r16, 0x002c(r8)
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addi r16, r16, -0x01
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stw r16, 0x0028(r8)
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stw r16, Area.Length(r8)
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subi r16, r16, 1
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stw r16, Area.LogicalEnd(r8)
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mr r17, r8
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_log 'Adjusting area '
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lwz r8, 0x0000(r17)
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lwz r8, Area.ID(r17)
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mr r8, r8
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bl printw
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_log 'to size '
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lwz r8, 0x002c(r17)
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lwz r8, Area.Length(r17)
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mr r8, r8
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bl printw
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_log '^n'
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; r6 = ewa
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bl Restore_r14_r31
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b VMReturn0
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VMInit_0x374
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lwz r7, 0x06ac(r1)
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lwz r8, 0x06c0(r1)
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stw r7, 0x06a8(r1)
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stw r8, KDP.FlatPageListPtr(r1)
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VMInit_Fail
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lwz r7, KDP.TotalPhysicalPages(r1)
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lwz r8, KDP.FlatPageListSegPtrs + 0(r1)
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stw r7, KDP.PrimaryAddrRangePages(r1)
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stw r8, KDP.FlatPageListPtr(r1)
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b VMReturn
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@ -503,7 +525,7 @@ VMExchangePages ; OUTSIDE REFERER
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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, 0x06a8(r1)
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lwz r9, KDP.PrimaryAddrRangePages(r1)
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bl VeryPopularFunction
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bge+ cr4, VMReturnMinus1
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bgt+ cr5, VMReturnMinus1
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@ -553,7 +575,7 @@ VMGetPhysicalPage ; OUTSIDE REFERER
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VMGetPhysicalPage_0x28
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; r6 = ewa
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bl Restore_r14_r31
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lwz r9, 0x06a8(r1)
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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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@ -596,7 +618,7 @@ getPTEntryGivenPage_0x3c
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getPTEntryGivenPage_0x48
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; r6 = ewa
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bl Restore_r14_r31
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lwz r9, 0x06a8(r1)
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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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@ -721,7 +743,7 @@ VMIsResident ; OUTSIDE REFERER
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VMIsResident_0x28
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; r6 = ewa
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bl Restore_r14_r31
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lwz r9, 0x06a8(r1)
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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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@ -754,7 +776,7 @@ VMIsUnmodified ; OUTSIDE REFERER
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VMLRU ; OUTSIDE REFERER
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rlwinm. r9, r9, 2, 0, 29
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lwz r15, KDP.FlatPageListPtr(r1)
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lwz r14, 0x06a4(r1)
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lwz r14, KDP.HTABORG(r1)
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add r15, r15, r9
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srwi r4, r9, 2
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li r5, 0x100
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@ -834,7 +856,7 @@ VMMakePageCacheable_0x4
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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, 0x0688(r1)
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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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@ -909,7 +931,7 @@ VMMakePageWriteThrough_0x4
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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, 0x0688(r1)
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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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@ -974,8 +996,8 @@ VMMakePageWriteThrough_0xec
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; VMMakePageNonCacheable
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PageSetCommon ; OUTSIDE REFERER
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lwz r15, 0x06a0(r1)
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lwz r14, 0x06a4(r1)
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lwz r15, KDP.PTEGMask(r1)
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lwz r14, KDP.HTABORG(r1)
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slwi r6, r4, 12
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mfsrin r6, r6
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rlwinm r8, r6, 7, 0, 20
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@ -1012,8 +1034,8 @@ PageSetCommon_0x2c
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beq- cr3, PageSetCommon_0xc0
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beq- cr4, PageSetCommon_0xbc
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crnot 2, 2
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lwz r15, 0x06a0(r1)
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lwz r14, 0x06a4(r1)
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lwz r15, KDP.PTEGMask(r1)
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lwz r14, KDP.HTABORG(r1)
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slwi r6, r4, 12
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mfsrin r6, r6
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xor r6, r6, r4
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@ -1059,7 +1081,7 @@ VMMakePageNonCacheable_0x4
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bltl- cr5, VMDoSomethingWithTLB
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bgel- cr5, VMSecondLastExportedFunc
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rlwinm r9, r9, 0, 27, 24
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lwz r7, 0x0688(r1)
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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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@ -1175,7 +1197,7 @@ VMMarkBacking_0x30
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VMMarkBacking_0x50
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; r6 = ewa
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bl Restore_r14_r31
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lwz r9, 0x06a8(r1)
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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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@ -1278,7 +1300,7 @@ VMMarkResident ; OUTSIDE REFERER
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VMMarkResident_0x50
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; r6 = ewa
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bl Restore_r14_r31
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lwz r9, 0x06a8(r1)
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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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@ -1354,7 +1376,7 @@ setPTEntryGivenPage_0x34
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setPTEntryGivenPage_0x5c
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; r6 = ewa
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bl Restore_r14_r31
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lwz r9, 0x06a8(r1)
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lwz r9, KDP.PrimaryAddrRangePages(r1)
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setPTEntryGivenPage_0x64
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mr r6, r4
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@ -1418,13 +1440,13 @@ VMShouldClean_0x34
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VMAllocateMemory ; OUTSIDE REFERER
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lwz r7, KDP.FlatPageListPtr(r1)
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lwz r8, 0x06c0(r1)
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lwz r8, KDP.FlatPageListSegPtrs + 0(r1)
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cmpwi cr6, r5, 0x00
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cmpw cr7, r7, r8
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or r7, r4, r6
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rlwinm. r7, r7, 0, 0, 11
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ble+ cr6, VMReturnMinus1
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lwz r9, 0x06a8(r1)
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lwz r9, KDP.PrimaryAddrRangePages(r1)
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bne+ cr7, VMReturnMinus1
|
||||
mr r7, r4
|
||||
bne+ VMReturnMinus1
|
||||
@ -1446,7 +1468,7 @@ VMAllocateMemory ; OUTSIDE REFERER
|
||||
b VMAllocateMemory_0xc0
|
||||
|
||||
VMAllocateMemory_0x6c
|
||||
lwz r9, 0x06a8(r1)
|
||||
lwz r9, KDP.PrimaryAddrRangePages(r1)
|
||||
addi r5, r5, -0x01
|
||||
|
||||
VMAllocateMemory_0x74
|
||||
@ -1454,7 +1476,7 @@ VMAllocateMemory_0x74
|
||||
bl VeryPopularFunction
|
||||
bltl- cr5, VMDoSomethingWithTLB
|
||||
bltl- cr5, major_0x09b40
|
||||
lwz r9, 0x06a8(r1)
|
||||
lwz r9, KDP.PrimaryAddrRangePages(r1)
|
||||
subf r8, r4, r9
|
||||
cmplw cr7, r5, r8
|
||||
and. r8, r16, r6
|
||||
@ -1472,7 +1494,7 @@ VMAllocateMemory_0x74
|
||||
|
||||
VMAllocateMemory_0xc0
|
||||
slwi r4, r7, 12
|
||||
lwz r9, 0x06b4(r1)
|
||||
lwz r9, KDP.VMMaxVirtualPages(r1)
|
||||
cmplw cr7, r7, r9
|
||||
rlwinm. r9, r7, 0, 0, 11
|
||||
blt+ cr7, VMReturnMinus1
|
||||
@ -1518,19 +1540,19 @@ VMAllocateMemory_0xf4
|
||||
b VMAllocateMemory_0x1a4
|
||||
|
||||
VMAllocateMemory_0x164
|
||||
lwz r7, 0x06ac(r1)
|
||||
lwz r7, KDP.TotalPhysicalPages(r1)
|
||||
subf r7, r5, r7
|
||||
stw r7, 0x06ac(r1)
|
||||
stw r7, 0x06a8(r1)
|
||||
stw r7, KDP.TotalPhysicalPages(r1)
|
||||
stw r7, KDP.PrimaryAddrRangePages(r1)
|
||||
lwz r5, -0x0020(r1)
|
||||
slwi r8, r7, 12
|
||||
stw r8, 0x0dc4(r5)
|
||||
stw r8, 0x0dc8(r5)
|
||||
mr r5, r14
|
||||
lwz r7, 0x06b4(r1)
|
||||
lwz r7, KDP.VMMaxVirtualPages(r1)
|
||||
li r8, 0xa00
|
||||
bl VMAllocateMemory_0x33c
|
||||
lwz r7, 0x06ac(r1)
|
||||
lwz r7, KDP.TotalPhysicalPages(r1)
|
||||
li r8, 0xc00
|
||||
bl VMAllocateMemory_0x33c
|
||||
mr r14, r5
|
||||
@ -1598,7 +1620,7 @@ VMAllocateMemory_0x1a4
|
||||
lwz r16, 0x0024(r8)
|
||||
cmpwi r16, 0x00
|
||||
bne+ Local_Panic
|
||||
lwz r16, 0x06a8(r1)
|
||||
lwz r16, KDP.PrimaryAddrRangePages(r1)
|
||||
lwz r17, 0x002c(r8)
|
||||
slwi r16, r16, 12
|
||||
cmpw r17, r16
|
||||
@ -1614,7 +1636,7 @@ VMAllocateMemory_0x2e0
|
||||
|
||||
VMAllocateMemory_0x2e8
|
||||
lwz r16, 0x0000(r15)
|
||||
lwz r7, 0x06ac(r1)
|
||||
lwz r7, KDP.TotalPhysicalPages(r1)
|
||||
lwz r8, KDP.FlatPageListPtr(r1)
|
||||
slwi r7, r7, 2
|
||||
add r7, r7, r8
|
||||
@ -1693,7 +1715,7 @@ VeryPopularFunction ; OUTSIDE REFERER
|
||||
|
||||
VeryPopularFunction_0x10
|
||||
lwzux r16, r15, r8
|
||||
lwz r14, 0x06a4(r1)
|
||||
lwz r14, KDP.HTABORG(r1)
|
||||
mtcrf 0x07, r16
|
||||
rlwinm r8, r16, 23, 9, 28
|
||||
rlwinm r9, r16, 0, 0, 19
|
||||
@ -1706,7 +1728,7 @@ VeryPopularFunction_0x10
|
||||
bl Local_Panic
|
||||
|
||||
VeryPopularFunction_0x40
|
||||
lwz r9, 0x06b4(r1)
|
||||
lwz r9, KDP.VMMaxVirtualPages(r1)
|
||||
cmplw cr4, r4, r9
|
||||
rlwinm. r9, r4, 0, 0, 11
|
||||
blt+ cr4, VMReturnMinus1
|
||||
@ -1864,7 +1886,7 @@ major_0x09b40 ; OUTSIDE REFERER
|
||||
b VMDoSomeIO
|
||||
|
||||
VMSecondLastExportedFunc ; OUTSIDE REFERER
|
||||
lwz r8, 0x06a0(r1)
|
||||
lwz r8, KDP.PTEGMask(r1)
|
||||
|
||||
|
||||
|
||||
@ -1875,7 +1897,7 @@ VMSecondLastExportedFunc ; OUTSIDE REFERER
|
||||
|
||||
|
||||
VMLastExportedFunc
|
||||
lwz r14, 0x06a4(r1)
|
||||
lwz r14, KDP.HTABORG(r1)
|
||||
slwi r9, r4, 12
|
||||
mfsrin r6, r9
|
||||
xor r9, r6, r4
|
||||
@ -1921,7 +1943,7 @@ VMLastExportedFunc_0x87
|
||||
addi r9, r9, 0x01
|
||||
stw r9, 0x0e94(r1)
|
||||
rlwimi r8, r4, 22, 26, 31
|
||||
lwz r9, 0x0688(r1)
|
||||
lwz r9, KDP.PageAttributeInit(r1)
|
||||
oris r8, r8, 0x8000
|
||||
rlwimi r9, r16, 0, 0, 19
|
||||
ori r9, r9, 0x100
|
||||
@ -1931,7 +1953,7 @@ VMLastExportedFunc_0x87
|
||||
rlwimi r9, r16, 1, 25, 25
|
||||
xori r9, r9, 0x40
|
||||
rlwimi r9, r16, 30, 31, 31
|
||||
lwz r7, 0x06a4(r1)
|
||||
lwz r7, KDP.HTABORG(r1)
|
||||
ori r16, r16, 0x801
|
||||
subf r7, r7, r14
|
||||
rlwimi r16, r7, 9, 0, 19
|
||||
@ -1954,7 +1976,7 @@ VMLastExportedFunc_0xd7
|
||||
mr r31, r5
|
||||
mr r28, r16
|
||||
mr r26, r14
|
||||
lwz r9, 0x06a8(r1)
|
||||
lwz r9, KDP.PrimaryAddrRangePages(r1)
|
||||
bl VeryPopularFunction
|
||||
mtlr r6
|
||||
b VMDoSomethingWithTLB
|
||||
@ -1968,7 +1990,7 @@ VMLastExportedFunc_0xd7
|
||||
|
||||
major_0x09c9c ; OUTSIDE REFERER
|
||||
addi r8, r1, 0x6c0
|
||||
lwz r9, 0x06ac(r1)
|
||||
lwz r9, KDP.TotalPhysicalPages(r1)
|
||||
rlwimi r8, r7, 18, 26, 29
|
||||
cmplw r7, r9
|
||||
lwz r8, 0x0000(r8)
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user