This Appendix documents the dump data format, in support of the Configure Platform Assisted Kernel Dump option in .

The register save area is an area in the partition’s memory used to preserve the registers for the active CPUs during a firmware assisted dump. The location and size of this area is specified by the partition when firmware assisted dump. The minimum size will be sent to the partition in the PFDS KDUMP node. The register save is a semi-free format list of registers for each CPU. Each list of registers for a CPU starts with “CPUSTRT” and ends with “CPUEND”. NumCpusOffset should be used to access the data to allow for additional fields to be added without affecting compatibility. Notes: Only CPUs that are online at the start of the Firmware Assisted Dump will have their register data saved. Each group of GPRs, FPRs, and VRs will be listed in ascending array index (and ASCII identifier) sorted order with no other interleaving registers. Further, registers whose value spans multiple doublewords (currently only VR and VSR array elements) will be listed in high to low sorted order with no other interleaving values. All other registers are not required to be in any specific order (To make debug easier they will most likely be placed in ascending ASCII identifier order) Offset Length (Bytes) Name Value Description 0x00 0x8 Magic Number 0x5245475341564500 “REGSAVE” Identifies this area 0x08 0x4 Version 0x0 Current version 0x0C 0x4 NumCpusOffset 0x1C Offset to NumCpus field 0x10 0xC Padding 0x0 Must be initialized to 0 0x1C 0x4 NumCpus Actual number of CPUs Number of CPUs (not the number of entries) 0x20 0x10 RegEntry “CPUSTRT”   0x30 0x10 RegEntry <various register values>   ...         0x?? 0x10 RegEntry “CPUEND”   0x?? 0x10 RegEntry “CPUSTRT”   ...           Offset Length (Bytes) Name Value Description 0x0 0x8 RegIdentifier See Below ASCII, Padded with binary zeros 0x08 0x8 RegData   Register Data   8 Byte Identifier 4 Byte Reserved 4 Byte Logical CPU ID   8 Byte Identifier 8 Byte Register Value   8 Byte Identifier 4 Byte Reserved 4 Byte Register Value   Identifier (Hex) Identifier (ASCII) Description 0x4350555354525400 CPUSTRT   0x435055454E440000 CPUEND   0x41434F5000000000 ACOP Available Coprocessor Register 0x414D520000000000 AMR Authority Mask Register 0x4346415200000000 CFAR Come From Address Register 0x4352000000000000 CR Condition Register 0x4354520000000000 CTR Count Register 0x4354524C00000000 CTRL Control Register 0x4441425200000000 DABR Data Address Breakpoint Register 0x4441425258000000 DABRX DABR Extended 0x4441520000000000 DAR Data Address Register 0x4445430000000000 DEC Decrementer 0x4453435200000000 DSCR Depth Stream Control Register 0x4453495352000000 DSISR Data Storage Interrupt Status Register 0x4650523030000000 FPR00 Floating Point Register 0 0x4650523031000000 FPR01 Floating Point Register 1 0x4650523032000000 FPR02 Floating Point Register 2 0x4650523033000000 FPR03 Floating Point Register 3 0x4650523034000000 FPR04 Floating Point Register 4 0x4650523035000000 FPR05 Floating Point Register 5 0x4650523036000000 FPR06 Floating Point Register 6 0x4650523037000000 FPR07 Floating Point Register 7 0x4650523038000000 FPR08 Floating Point Register 8 0x4650523039000000 FPR09 Floating Point Register 9 0x4650523130000000 FPR10 Floating Point Register 10 0x4650523131000000 FPR11 Floating Point Register 11 0x4650523132000000 FPR12 Floating Point Register 12 0x4650523133000000 FPR13 Floating Point Register 13 0x4650523134000000 FPR14 Floating Point Register 14 0x4650523135000000 FPR15 Floating Point Register 15 0x4650523136000000 FPR16 Floating Point Register 16 0x4650523137000000 FPR17 Floating Point Register 17 0x4650523138000000 FPR18 Floating Point Register 18 0x4650523139000000 FPR19 Floating Point Register 19 0x4650523230000000 FPR20 Floating Point Register 20 0x4650523231000000 FPR21 Floating Point Register 21 0x4650523232000000 FPR22 Floating Point Register 22 0x4650523233000000 FPR23 Floating Point Register 23 0x4650523234000000 FPR24 Floating Point Register 24 0x4650523235000000 FPR25 Floating Point Register 25 0x4650523236000000 FPR26 Floating Point Register 26 0x4650523237000000 FPR27 Floating Point Register 27 0x4650523238000000 FPR28 Floating Point Register 28 0x4650523239000000 FPR29 Floating Point Register 29 0x4650523330000000 FPR30 Floating Point Register 30 0x4650523331000000 FPR31 Floating Point Register 31 0x4650534352000000 FPSCR Floating Point Status and Control Register 0x4750523030000000 GPR00 General Purpose Register 0 0x4750523031000000 GPR01 General Purpose Register 1 0x4750523032000000 GPR02 General Purpose Register 2 0x4750523033000000 GPR03 General Purpose Register 3 0x4750523034000000 GPR04 General Purpose Register 4 0x4750523035000000 GPR05 General Purpose Register 5 0x4750523036000000 GPR06 General Purpose Register 6 0x4750523037000000 GPR07 General Purpose Register 7 0x4750523038000000 GPR08 General Purpose Register 8 0x4750523039000000 GPR09 General Purpose Register 9 0x4750523130000000 GPR10 General Purpose Register 10 0x4750523131000000 GPR11 General Purpose Register 11 0x4750523132000000 GPR12 General Purpose Register 12 0x4750523133000000 GPR13 General Purpose Register 13 0x4750523134000000 GPR14 General Purpose Register 14 0x4750523135000000 GPR15 General Purpose Register 15 0x4750523136000000 GPR16 General Purpose Register 16 0x4750523137000000 GPR17 General Purpose Register 17 0x4750523138000000 GPR18 General Purpose Register 18 0x4750523139000000 GPR19 General Purpose Register 19 0x4750523230000000 GPR20 General Purpose Register 20 0x4750523231000000 GPR21 General Purpose Register 21 0x4750523232000000 GPR22 General Purpose Register 22 0x4750523233000000 GPR23 General Purpose Register 23 0x4750523234000000 GPR24 General Purpose Register 24 0x4750523235000000 GPR25 General Purpose Register 25 0x4750523236000000 GPR26 General Purpose Register 26 0x4750523237000000 GPR27 General Purpose Register 27 0x4750523238000000 GPR28 General Purpose Register 28 0x4750523239000000 GPR29 General Purpose Register 29 0x4750523330000000 GPR30 General Purpose Register 30 0x4750523331000000 GPR31 General Purpose Register 31 0x4C52000000000000 LR Link Register 0x4D4D435230000000 MMCR0 Monitor Mode Control Register 0 0x4D4D435231000000 MMCR1 Monitor Mode Control Register 1 0x4D4D435240000000 MMCRA Monitor Mode Control Register A 0x4D53520000000000 MSR Machine State Register 0x4e49410000000000 NIA Next Instruction Address 0x5049440000000000 PID Process ID Register 0x5049520000000000 PIR Processor Identification Register 0x504D433100000000 PMC1 Performance Monitor Counter 1 0x504D433200000000 PMC2 Performance Monitor Counter 2 0x504D433300000000 PMC3 Performance Monitor Counter 3 0x504D433400000000 PMC4 Performance Monitor Counter 4 0x504D433500000000 PMC5 Performance Monitor Counter 5 0x504D433600000000 PIMC6 Performance Monitor Counter 6 0x5055525200000000 PURR Processor Utilization Register 0x5056520000000000 PVR Processor Version Register 0x5344415200000000 SDAR Sampled Data Address Register 0x5349415200000000 SIAR Sampled Instruction Address Register 0x5350524730000000 SPRG0 Special Purpose Register General 0 0x5350524731000000 SPRG1 Special Purpose Register General 1 0x5350524732000000 SPRG2 Special Purpose Register General 2 0x5350524733000000 SPRG3 Special Purpose Register General 3 0x5350555252000000 SPURR Scaled Processor Utilization Register 0x5352523000000000 SRR0 Save Restore Register 0 0x5352523100000000 SRR1 Save Restore Register 1 0x5442000000000000 TB Time Base Register 0x5453520000000000 TSR Thread Status Register 0x55414D4F52000000 UAMOR User Authority Mask Override Register 0x565230305F484900 VR00_HI Vector Register 0 High 0x565230305F4C4F00 VR00_LO Vector Register 0 Low 0x565230315F484900 VR01_HI Vector Register 1 High 0x565230315F4C4F00 VR01_LO Vector Register 1 Low 0x565230325F484900 VR02_HI Vector Register 2 High 0x565230325F4C4F00 VR02_LO Vector Register 2 Low 0x565230335F484900 VR03_HI Vector Register 3 High 0x565230335F4C4F00 VR03_LO Vector Register 3 Low 0x565230345F484900 VR04_HI Vector Register 4 High 0x565230345F4C4F00 VR04_LO Vector Register 4 Low 0x565230355F484900 VR05_HI Vector Register 5 High 0x565230355F4C4F00 VR05_LO Vector Register 5 Low 0x565230365F484900 VR06_HI Vector Register 6 High 0x565230365F4C4F00 VR06_LO Vector Register 6 Low 0x565230375F484900 VR07_HI Vector Register 7 High 0x565230375F4C4F00 VR07_LO Vector Register 7 Low 0x565230385F484900 VR08_HI Vector Register 8 High 0x565230385F4C4F00 VR08_LO Vector Register 8 Low 0x565230395F484900 VR09_HI Vector Register 9 High 0x565230395F4C4F00 VR09_LO Vector Register 9 Low 0x565231305F484900 VR10_HI Vector Register 10 High 0x565231305F4C4F00 VR10_LO Vector Register 10 Low 0x565231315F484900 VR11_HI Vector Register 11 High 0x565231315F4C4F00 VR11_LO Vector Register 11 Low 0x565231325F484900 VR12_HI Vector Register 12 High 0x565231325F4C4F00 VR12_LO Vector Register 12 Low 0x565231335F484900 VR13_HI Vector Register 13 High 0x565231335F4C4F00 VR13_LO Vector Register 13 Low 0x565231345F484900 VR14_HI Vector Register 14 High 0x565231345F4C4F00 VR14_LO Vector Register 14 Low 0x565231355F484900 VR15_HI Vector Register 15 High 0x565231355F4C4F00 VR15_LO Vector Register 15 Low 0x565231365F484900 VR16_HI Vector Register 16 High 0x565231365F4C4F00 VR16_LO Vector Register 16 Low 0x565231375F484900 VR17_HI Vector Register 17 High 0x565231375F4C4F00 VR17_LO Vector Register 17 Low 0x565231385F484900 VR18_HI Vector Register 18 High 0x565231385F4C4F00 VR18_LO Vector Register 18 Low 0x565231395F484900 VR19_HI Vector Register 19 High 0x565231395F4C4F00 VR19_LO Vector Register 19 Low 0x565232305F484900 VR20_HI Vector Register 20 High 0x565232305F4C4F00 VR20_LO Vector Register 20 Low 0x565232315F484900 VR21_HI Vector Register 21 High 0x565232315F4C4F00 VR21_LO Vector Register 21 Low 0x565232325F484900 VR22_HI Vector Register 22 High 0x565232325F4C4F00 VR22_LO Vector Register 22 Low 0x565232335F484900 VR23_HI Vector Register 23 High 0x565232335F4C4F00 VR23_LO Vector Register 23 Low 0x565232345F484900 VR24_HI Vector Register 24 High 0x565232345F4C4F00 VR24_LO Vector Register 24 Low 0x565232355F484900 VR25_HI Vector Register 25 High 0x565232355F4C4F00 VR25_LO Vector Register 25 Low 0x565232365F484900 VR26_HI Vector Register 26 High 0x565232365F4C4F00 VR26_LO Vector Register 26 Low 0x565232375F484900 VR27_HI Vector Register 27 High 0x565232375F4C4F00 VR27_LO Vector Register 27 Low 0x565232385F484900 VR28_HI Vector Register 28 High 0x565232385F4C4F00 VR28_LO Vector Register 28 Low 0x565232395F484900 VR29_HI Vector Register 29 High 0x565232395F4C4F00 VR29_LO Vector Register 29 Low 0x565233305F484900 VR30_HI Vector Register 30 High 0x565233305F4C4F00 VR30_LO Vector Register 30 Low 0x565233315F484900 VR31_HI Vector Register 31 High 0x565233315F4C4F00 VR31_LO Vector Register 31 Low 0x5652534156450000 VRSAVE VR Save Register 0x5653435200000000 VSCR VMX Status and Condition Register 0x56535230305F4849 VSR00_HI Vector Scalar Register 0 High 0x56535230305F4C4F VSR00_LO Vector Scalar Register 0 Low 0x56535230315F4849 VSR01_HI Vector Scalar Register 1 High 0x56535230315F4C4F VSR01_LO Vector Scalar Register 1 Low 0x56535230325F4849 VSR02_HI Vector Scalar Register 2 High 0x56535230325F4C4F VSR02_LO Vector Scalar Register 2 Low 0x56535230335F4849 VSR03_HI Vector Scalar Register 3 High 0x56535230335F4C4F VSR03_LO Vector Scalar Register 3 Low 0x56535230345F4849 VSR04_HI Vector Scalar Register 4 High 0x56535230345F4C4F VSR04_LO Vector Scalar Register 4 Low 0x56535230355F4849 VSR05_HI Vector Scalar Register 5 High 0x56535230355F4C4F VSR05_LO Vector Scalar Register 5 Low 0x56535230365F4849 VSR06_HI Vector Scalar Register 6 High 0x56535230365F4C4F VSR06_LO Vector Scalar Register 6 Low 0x56535230375F4849 VSR07_HI Vector Scalar Register 7 High 0x56535230375F4C4F VSR07_LO Vector Scalar Register 7 Low 0x56535230385F4849 VSR08_HI Vector Scalar Register 8 High 0x56535230385F4C4F VSR08_LO Vector Scalar Register 8 Low 0x56535230395F4849 VSR09_HI Vector Scalar Register 9 High 0x56535230395F4C4F VSR09_LO Vector Scalar Register 9 Low 0x56535231305F4849 VSR10_HI Vector Scalar Register 10 High 0x56535231305F4C4F VSR10_LO Vector Scalar Register 10 Low 0x56535231315F4849 VSR11_HI Vector Scalar Register 11 High 0x56535231315F4C4F VSR11_LO Vector Scalar Register 11 Low 0x56535231325F4849 VSR12_HI Vector Scalar Register 12 High 0x56535231325F4C4F VSR12_LO Vector Scalar Register 12 Low 0x56535231335F4849 VSR13_HI Vector Scalar Register 13 High 0x56535231335F4C4F VSR13_LO Vector Scalar Register 13 Low 0x56535231345F4849 VSR14_HI Vector Scalar Register 14 High 0x56535231345F4C4F VSR14_LO Vector Scalar Register 14 Low 0x56535231355F4849 VSR15_HI Vector Scalar Register 15 High 0x56535231355F4C4F VSR15_LO Vector Scalar Register 15 Low 0x56535231365F4849 VSR16_HI Vector Scalar Register 16 High 0x56535231365F4C4F VSR16_LO Vector Scalar Register 16 Low 0x56535231375F4849 VSR17_HI Vector Scalar Register 17 High 0x56535231375F4C4F VSR17_LO Vector Scalar Register 17 Low 0x56535231385F4849 VSR18_HI Vector Scalar Register 18 High 0x56535231385F4C4F VSR18_LO Vector Scalar Register 18 Low 0x56535231395F4849 VSR19_HI Vector Scalar Register 19 High 0x56535231395F4C4F VSR19_LO Vector Scalar Register 19 Low 0x56535232305F4849 VSR20_HI Vector Scalar Register 20 High 0x56535232305F4C4F VSR20_LO Vector Scalar Register 20 Low 0x56535232315F4849 VSR21_HI Vector Scalar Register 21 High 0x56535232315F4C4F VSR21_LO Vector Scalar Register 21 Low 0x56535232325F4849 VSR22_HI Vector Scalar Register 22 High 0x56535232325F4C4F VSR22_LO Vector Scalar Register 22 Low 0x56535232335F4849 VSR23_HI Vector Scalar Register 23 High 0x56535232335F4C4F VSR23_LO Vector Scalar Register 23 Low 0x56535232345F4849 VSR24_HI Vector Scalar Register 24 High 0x56535232345F4C4F VSR24_LO Vector Scalar Register 24 Low 0x56535232355F4849 VSR25_HI Vector Scalar Register 25 High 0x56535232355F4C4F VSR25_LO Vector Scalar Register 25 Low 0x56535232365F4849 VSR26_HI Vector Scalar Register 26 High 0x56535232365F4C4F VSR26_LO Vector Scalar Register 26 Low 0x56535232375F4849 VSR27_HI Vector Scalar Register 27 High 0x56535232375F4C4F VSR27_LO Vector Scalar Register 27 Low 0x56535232385F4849 VSR28_HI Vector Scalar Register 28 High 0x56535232385F4C4F VSR28_LO Vector Scalar Register 28 Low 0x56535232395F4849 VSR29_HI Vector Scalar Register 29 High 0x56535232395F4C4F VSR29_LO Vector Scalar Register 29 Low 0x56535233305F4849 VSR30_HI Vector Scalar Register 30 High 0x56535233305F4C4F VSR30_LO Vector Scalar Register 30 Low 0x56535233315F4849 VSR31_HI Vector Scalar Register 31 High 0x56535233315F4C4F VSR31_LO Vector Scalar Register 31 Low 0x56535233325F4849 VSR32_HI Vector Scalar Register 32 High 0x56535233325F4C4F VSR32_LO Vector Scalar Register 32 Low 0x56535233335F4849 VSR33_HI Vector Scalar Register 33 High 0x56535233335F4C4F VSR33_LO Vector Scalar Register 33 Low 0x56535233345F4849 VSR34_HI Vector Scalar Register 34 High 0x56535233345F4C4F VSR34_LO Vector Scalar Register 34 Low 0x56535233355F4849 VSR35_HI Vector Scalar Register 35 High 0x56535233355F4C4F VSR35_LO Vector Scalar Register 35 Low 0x56535233365F4849 VSR36_HI Vector Scalar Register 36 High 0x56535233365F4C4F VSR36_LO Vector Scalar Register 36 Low 0x56535233375F4849 VSR37_HI Vector Scalar Register 37 High 0x56535233375F4C4F VSR37_LO Vector Scalar Register 37 Low 0x56535233385F4849 VSR38_HI Vector Scalar Register 38 High 0x56535233385F4C4F VSR38_LO Vector Scalar Register 38 Low 0x56535233395F4849 VSR39_HI Vector Scalar Register 39 High 0x56535233395F4C4F VSR39_LO Vector Scalar Register 39 Low 0x56535234305F4849 VSR40_HI Vector Scalar Register 40 High 0x56535234305F4C4F VSR40_LO Vector Scalar Register 40 Low 0x56535234315F4849 VSR41_HI Vector Scalar Register 41 High 0x56535234315F4C4F VSR41_LO Vector Scalar Register 41 Low 0x56535234325F4849 VSR42_HI Vector Scalar Register 42 High 0x56535234325F4C4F VSR42_LO Vector Scalar Register 42 Low 0x56535234335F4849 VSR43_HI Vector Scalar Register 43 High 0x56535234335F4C4F VSR43_LO Vector Scalar Register 43 Low 0x56535234345F4849 VSR44_HI Vector Scalar Register 44 High 0x56535234345F4C4F VSR44_LO Vector Scalar Register 44 Low 0x56535234355F4849 VSR45_HI Vector Scalar Register 45 High 0x56535234355F4C4F VSR45_LO Vector Scalar Register 45 Low 0x56535234365F4849 VSR46_HI Vector Scalar Register 46 High 0x56535234365F4C4F VSR46_LO Vector Scalar Register 46 Low 0x56535234375F4849 VSR47_HI Vector Scalar Register 47 High 0x56535234375F4C4F VSR47_LO Vector Scalar Register 47 Low 0x56535234385F4849 VSR48_HI Vector Scalar Register 48 High 0x56535234385F4C4F VSR48_LO Vector Scalar Register 48 Low 0x56535234395F4849 VSR49_HI Vector Scalar Register 49 High 0x56535234395F4C4F VSR49_LO Vector Scalar Register 49 Low 0x56535235305F4849 VSR50_HI Vector Scalar Register 50 High 0x56535235305F4C4F VSR50_LO Vector Scalar Register 50 Low 0x56535235315F4849 VSR51_HI Vector Scalar Register 51 High 0x56535235315F4C4F VSR51_LO Vector Scalar Register 51 Low 0x56535235325F4849 VSR52_HI Vector Scalar Register 52 High 0x56535235325F4C4F VSR52_LO Vector Scalar Register 52 Low 0x56535235335F4849 VSR53_HI Vector Scalar Register 53 High 0x56535235335F4C4F VSR53_LO Vector Scalar Register 53 Low 0x56535235345F4849 VSR54_HI Vector Scalar Register 54 High 0x56535235345F4C4F VSR54_LO Vector Scalar Register 54 Low 0x56535235355F4849 VSR55_HI Vector Scalar Register 55 High 0x56535235355F4C4F VSR55_LO Vector Scalar Register 55 Low 0x56535235365F4849 VSR56_HI Vector Scalar Register 56 High 0x56535235365F4C4F VSR56_LO Vector Scalar Register 56 Low 0x56535235375F4849 VSR57_HI Vector Scalar Register 57 High 0x56535235375F4C4F VSR57_LO Vector Scalar Register 57 Low 0x56535235385F4849 VSR58_HI Vector Scalar Register 58 High 0x56535235385F4C4F VSR58_LO Vector Scalar Register 58 Low 0x56535235395F4849 VSR59_HI Vector Scalar Register 59 High 0x56535235395F4C4F VSR59_LO Vector Scalar Register 59 Low 0x56535236305F4849 VSR60_HI Vector Scalar Register 60 High 0x56535236305F4C4F VSR60_LO Vector Scalar Register 60 Low 0x56535236315F4849 VSR61_HI Vector Scalar Register 61 High 0x56535236315F4C4F VSR61_LO Vector Scalar Register 61 Low 0x56535236325F4849 VSR62_HI Vector Scalar Register 62 High 0x56535236325F4C4F VSR62_LO Vector Scalar Register 62 Low 0x56535236335F4849 VSR63_HI Vector Scalar Register 63 High 0x56535236335F4C4F VSR63_LO Vector Scalar Register 63 Low 0x5845520000000000 XER Fixed-Point Exception Register

The hardware page table entry save area is an area in the partition’s memory used to preserve the hardware page table entries corresponding to the VRMA entries that are used when Open Firmware is started. The location and size of this area is specified by the partition when firmware assisted dump. The minimum size is reported to the partition in the new PFDS KDUMP node. When accessing the table the offset to NumEntries should be used to allow for different versions of the table. Newer versions of the table will be compatible with all previous versions.   Offset Length (Bytes) Name Value Description 0x00 0x8 Magic Number 0x4850544553415645 “HPTESAVE” Used to verify that this area contains what it should 0x08 0x4 Version 0x0 Current version 0x0C 0x4 NumEntriesOffset 0x1C Offset to number of entries 0x10 0x8 Padding 0x0 Must be initialized to 0 0x18 0x8 NumEntries Actual Number Of Entries   0x20 0x18 HptEntry1     0x38 0x18 HptEntry2     ...           Offset Length (Bytes) Name Value Description 0x0 0x8 HptEntryIndex   Index into the HPT table for the entry 0x08 0x8 Dword0   HPT Entry High 0x10 0x8 Dword1   HPT Entry Low Note:The entries are not in any particular order. It is up to the user of the save area to sort the data.