CMD_PROC_WRITE and write-multi now read writes back before reporting success: a proven DMAP mismatch no longer falls through to mdbg, and failures surface as CMD_ERROR (single write) or typed per-entry codes (invalid / DMAP / verify / mdbg) for write-multi. A transfer whose start address ends in 0xFF backs up one byte to keep the write aligned; that adjacent-byte read-modify-write needs a stable or suspended target.
Additive, capability-gated turbo memory-scan path (CC10-CC16); the legacy and
async scan paths stay byte-for-byte unchanged.
- SIMD typed comparator (scan_compare_simd.c) + CC10 caps + CC11 first scan.
- CC12 local-cluster rescan; server-resident survivor sets (CC13 GET / CC14
END); unknown-value bitmap + NVMe snapshot with since-last narrowing and a
materialize-when-sparse handoff to a compact record list.
- Aliasing read engine (scan_alias.c): maps target physical pages into our pmap
via guarded not-present leaf-PTE writes, scanning in place at DRAM bandwidth.
Unified per-2MB-span derivation (proc_ptwalk_span_resolve) makes it page-size
agnostic; verify-before-trust + restore + verify-before-munmap reclaim keep it
safe-to-fail. Opt-in (TSE_ALIASING + TS_USE_ALIASING, default off); mdbg is the
floor. Verifies 1-in-16 maps (derivation is byte-proven, guards prevent faults
regardless) - ~30% faster than verify-every-map.
- Opt-in server-side parallel compare for the aliased exact-match streaming scan
(TSE_PARALLEL_COMPARE + TS_PARALLEL_COMPARE, default off) - for single-
connection clients; multi-connection clients fan out across connections instead.
- Region-parallel multi-pattern AOB scan (CMD_PROC_SCAN_AOB_MULTI, aob_scan.h):
splits the range into per-worker sub-ranges, each scanned once for all patterns
via a shared first-byte dispatch table. Wire and results unchanged.
- Region-classify query (0xBDAACC16): per-region cache attribute (uncached PCD
bit) + measured read throughput, so a client can opt out of slow/uncached
regions. Read-only; the server drops nothing.
HW-validated on FW 9.00.
Makes the "initial" 8-13.x support from v1.2.5 actually functional.
HW-validated on FW 8.xx, 9.xx, 10.xx and 12.xx (all watchpoint types,
breakpoints, title id, content id, version etc.). FW-agnostic by design; 11/13.x
are lower-risk but not tested.
Memory write (poke) on FW >= 8.40:
- mdbg write op (0x13) is kernel-gated with EPERM on FW >= 8.40, so pokes
failed. Route writes through a DMAP page-table walk (kernel_copyin on the
physical alias) on FW >= 8.40; mdbg stays the path on < 8.40 and as a
fallback.
- PROC_ALLOC pre-faults its pages so writes land on freshly-allocated
demand-zero memory.
Breakpoints / watchpoints on FW 9.x-13.x:
- Extend the kernel-dbreg allowlist to 9.00-13.20; HW BP/WP were silently
no-oping on 9.x+.
- SW (INT3) breakpoints write the 0xCC via the DMAP path (mdbg rejected it
on FW >= 8.40).
- Clear DR6 after each debug exception: FW 11/12 stops re-delivering a
HW BP/WP trap after a few hits when the sticky DR6 status is left set;
plus re-arm the debug regs for data watchpoints.
Game ID / Content ID / Version - firmware-agnostic:
- Resolve title id and content id by pattern-scanning the proc struct
instead of per-FW offsets (which shifted at 8.x and 12.x).
- Foreground-app command resolves the title id robustly so the param.sfo
game version reads correctly on 12.x.
Console crash on client disconnect (SIGPIPE):
- Closing the client mid-operation raised SIGPIPE in the server thread and
killed the host SceShellCore. Suppress it: MSG_NOSIGNAL on sends +
SO_NOSIGPIPE on the sockets.
Load notification now shows the running firmware version, and the credits
line was updated.
Documentation:
- Rewrote PROTOCOL.md against the v1.2.6 sources (commands, packet structs,
status/bit-swap semantics, scan/xref wire formats, enums).
- Corrected and expanded README: per-release firmware support table with
verification status, and accuracy fixes throughout.
Bump version 1.2.5 to 1.2.6.
Features
- Option E: CMD_PROC_MAPS now augments the vm_map list with Sony-aux regions
(SceGnm/SceAgc/JIT/DMEM) that bypass vm_map, discovered via a kernel-side
x86-64 page-table walk over the DMAP. FW-agnostic (runtime pmap-offset
discovery + ground-truth validation); falls back to the plain vm_map result
on any failure.
- Hybrid memory-read path: reads route DMAP-direct for vm_map-absent (aux)
regions and mdbg otherwise (and as fallback), making aux scans ~4x faster on
both the CMD_PROC_READ and server-side scan paths. No protocol change;
byte-identical results.
Fixes
- SW breakpoint wait4-race: eliminate the multi-threaded epilogue-BP SIGSEGV
storm (stale TRAP_TRACE/TRAP_BRKPT absorbers, PT_LWPINFO-gated sibling
rewind, RIP-only fast caches, authid bump around rearm, SIGSEGV-storm guard).
- AOB-multi scan: unique-mode now exits only on invalidated >= pat_count
(matches the original), fixing wrongly-reported-unique / truncated scans.
Performance / robustness
- BP-event latency: select timeout 1000->100 us, poll 100->50 us.
- Per-command debug-state locking (0xBDBB) to prevent BP-slot-table corruption
under concurrent clients.
- Installer: double-load guard (loopback 744 probe), relocation pre-apply plus
batched ptrace_io for faster injection, wait4 instead of a fixed sleep.
Refactor
- Firmware detection rewritten to a direct switch(fw & 0xffff0000) with
per-case version annotations; behavior-preserving (verified equivalent).
Version 1.2.3 -> 1.2.4.
Pharaoh2k