When TryAllocateAtExact fails for the main image base (0x800000000
for PS5, 0x400000 for PS4), the loader previously threw a fatal
InvalidOperationException with no recovery path. This happens when
the host OS has already claimed part of that address range — common
under Rosetta 2, with aggressive ASLR, or when another process maps
into the guest address space.
Instead of failing immediately, attempt TryBackFixedRange which
backs the range page by page, claiming any free gaps. If the
backfill also fails, Clear() rolls back partial allocations and
the exception now includes platform-specific recovery advice.
This prevents the most common emulator startup crash on affected
hosts.
Co-authored-by: tru3 <tru3@tru3.com>
BuildImportStubs filtered orderedImportNids by calling ShouldCreateImportStub
for each unique NID, and every call scanned the entire descriptor list
looking for a match. On a real module both the NID count and the descriptor
count run into the thousands, so the filter degraded to O(nids * descriptors)
ordinal string comparisons on the one-time load path.
Replace the per-NID rescan with a single pass over the descriptors that
builds a HashSet of eligible NIDs, then filter orderedImportNids with O(1)
membership. Eligibility is unchanged: a NID qualifies when any of its
descriptors is non-weak, or is weak but resolvable via the module manager.
ShouldCreateImportStub is retained (still used by the DEBUG self-checks), and
a self-check now asserts the set-based collector agrees with the per-NID rule.
Co-authored-by: slick-daddy <slick-daddy@users.noreply.github.com>
* Implement DescribeAddressForDiagnostics method
Added a method to describe the state of a memory address for diagnostics.
* core: enrich allocation failure exception with host region diagnostic
* [Core] Add POSIX native execution and PS5 SELF support
Extend the native backend, guest TLS, fixed-address memory, and loader paths needed by PS5 titles on Windows, Linux, and macOS. Keep workstation GC so high-core-count hosts do not reserve over fixed guest image bases.
* [HLE] Expand PS5 service and media compatibility
Add the kernel, threading, save-data, networking, audio, video-codec, font, dialog, and service exports required by newer PS5 software. Preserve every SysAbi NID currently registered by main while adding the compatibility surface used by ASTRO BOT.
* [AGC/Vulkan] Extend Gen5 shader and presentation support
Expand PM4 handling, Gen5 shader translation, MRT and packed export support, guest image tracking, depth initialization, texture aliasing, and Vulkan presentation. Add the performance overlay and address-filtered diagnostics used to validate ASTRO BOT with original shaders.
* [Core] Align static TLS reservation across hosts
* [Pad] Align primary user ID with UserService
* [Gpu] Preserve runtime scalar buffers across renderer seam
* [AGC] Restore omitted command helper exports
* [Vulkan] Reuse primary views for promoted MRT targets
* [Vulkan] Preserve scratch storage bindings in compute dispatches
h4sht