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- EL2 banks, exception entry/ERET to EL2, EL2 translation regime (TTBR0/TTBR1
with TCR_EL2 layouts), HCR_EL2.TGE routing, and HCR_EL2.E2H (VHE) redirection
of EL1 register names from EL2.
- Stored IMP-DEF bank for S3_{4,5,6}_c15 registers the SPTM monitor configures.
- system::monitor: place Apple's sptm.t8103 image in DRAM, boot structure with
the linear-map fields, ADT placeholder-flag cleaning, and chosen/memory-map
region insertion.
- Debug hooks: Machine::set_step_trace (one instruction per block, reports
changed system registers including exception entries) and
Machine::set_memory_trace (translated loads and stores).
- ID_AA64PFR0_EL1 advertises EL2.
- xnu::Segment keeps its segname, with Segment::name(). - monitor::image_parts names an image's contiguous parts (ro, rx, bx, rw, le, rs, virt, entry); write_part copies one; place_parts writes a whole image at caller addresses and returns its chosen/memory-map regions. - monitor::add_property inserts a property at any device-tree node path; add_memory_map_region is built on it. - The monitor's region table requires each present region to start where the previous one ended; the probe packs TXM, TrustCache, the kernelcache, the device tree and SPTM accordingly. - The monitor now validates the regions and reads /chosen/dram-base. It then zeroes a page at VA & 0x3fff_ffff_ffff, so its linear-map convention is still unresolved.
The monitor maps physical ranges through a PAPT table ({VA base, PA base, pages})
filled by its DRAM registrar at 0xfffffff0270bd224. The registrar is never entered;
its only reference is a function-pointer table in __DATA_CONST. With the table empty,
a lookup misses and the zeroing routine clears a masked address. This corrects the
earlier reading of the masked TTBR and zeroing addresses as a physical convention.
The bootstrap fills the PAPT table in its own DRAM walk (0xfffffff0270d05f4, entry writes at d0804) and zero-fills pages through that table at 0xfffffff0270d0b0c. Function 0xfffffff0270bd224 is SPTM_FUNCTIONID_SLIDE_REGION (dispatch command), not the bootstrap's registrar. The abort's masked address is a lookup miss, not a register convention.
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