10.0.0: Difference between revisions

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** The initial arguments now store an entrypoint invocation function pointer in addition to the entrypoint.

** Core 1/2/3 now panic if cpuactlr/cpuectlr hold a value different than the one in init argument. Previously, they they did if (real value != expected value) { real value = expected value }.

* The reserved memory size for slab heap aslr gaps was reduced by 64 KB from 2 MB to 0x1F0000.

* Physical ASLR for certain backing regions (Kernel .text/.rodata/.rwdata/.bss + the Slab Heap region) was implemented.

** Physical randomization of the kernel image is done by KernelLdr.

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** Next, the lambda is called with entry template = input entry template, bitflag parameter = 1. This changes all mappings to new permissions, and flushes data cache on all new mappings.

** Finally, mappings are merged, and the function returns.

<check ~~back~~ for ~~more diffs later>~~

* SvcQueryIoMapping's ABI was changed.

** Previously signature was Result QueryIoMapping(uintptr_t *out_address, PhysicalAddress physical_address, size_t size).

** New signature is Result QueryIoMapping(uintptr_t *out_address, size_t *out_size, PhysicalAddress physical_address, size_t size);

** For normal IO, out_size is just written with the input size parameter.

** For special debug regions (mapped using 8.0.0+ memory region descriptor, queried by passing 1/2/3 as phys_addr parameter), out_size is written with the real size of the queried region.

* SvcQueryPhysicalAddress was stubbed, and now always returns ResultInvalidCurrentMemoryState.

* KCurrentContext now stores a dereferencable pointer to the current thread's TLS.

** This is used to check the user disable count (for thread pinning) in the SvcHandler instead of loading tls from tpidrro_el0.

====FIRM Sysmodules====

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* [[Error_Upload_services|eupld]] now has access to srepo:u.

* [[Glue_services|glue]] no longer has access to bpc, and access to time:al was added.

** Prior to this sysupdate, no retail system-titles used time:al.

* [[GRC_services|grc]] now has access to time:su.

* [[creport]] no longer has access to ns:dev, and access to pgl was added.

* [[Shared_Database_services|sdb]] no longer has access to prepo:s, and access to srepo:u was added.

* [[OLSC_services|olsc]] now hosts a new [[Services_API|service]], and access to arp:r was added. [[SVC]]s svcMapTransferMemory and svcUnmapTransferMemory are now accessible.

* All web-applets now have access to [[SVC]]s svcMapPhysicalMemoryUnsafe/svcUnmapPhysicalMemoryUnsafe.

* All web-applets now have access to [[SVC]]s svcMapPhysicalMemoryUnsafe/svcUnmapPhysicalMemoryUnsafe, but these aren't used in the main-codebin for any of these applets.

* [[MyPage_Applet|LibraryAppletMyPage]] now has access to npns:s.

@@ Line 71: / Line 71: @@
 ** The initial arguments now store an entrypoint invocation function pointer in addition to the entrypoint.
 ** Core 1/2/3 now panic if cpuactlr/cpuectlr hold a value different than the one in init argument. Previously, they they did if (real value != expected value) { real value = expected value }.
+* The reserved memory size for slab heap aslr gaps was reduced by 64 KB from 2 MB to 0x1F0000.
 * Physical ASLR for certain backing regions (Kernel .text/.rodata/.rwdata/.bss + the Slab Heap region) was implemented.
 ** Physical randomization of the kernel image is done by KernelLdr.
@@ Line 110: / Line 111: @@
 ** Next, the lambda is called with entry template = input entry template, bitflag parameter = 1. This changes all mappings to new permissions, and flushes data cache on all new mappings.
 ** Finally, mappings are merged, and the function returns.
-<check back for more diffs later>
+* SvcQueryIoMapping's ABI was changed.
+** Previously signature was Result QueryIoMapping(uintptr_t *out_address, PhysicalAddress physical_address, size_t size).
+** New signature is Result QueryIoMapping(uintptr_t *out_address, size_t *out_size, PhysicalAddress physical_address, size_t size);
+** For normal IO, out_size is just written with the input size parameter.
+** For special debug regions (mapped using 8.0.0+ memory region descriptor, queried by passing 1/2/3 as phys_addr parameter), out_size is written with the real size of the queried region.
+* SvcQueryPhysicalAddress was stubbed, and now always returns ResultInvalidCurrentMemoryState.
+* KCurrentContext now stores a dereferencable pointer to the current thread's TLS.
+** This is used to check the user disable count (for thread pinning) in the SvcHandler instead of loading tls from tpidrro_el0.
 ====FIRM Sysmodules====
@@ Line 132: / Line 140: @@
 * [[Error_Upload_services|eupld]] now has access to srepo:u.
 * [[Glue_services|glue]] no longer has access to bpc, and access to time:al was added.
+** Prior to this sysupdate, no retail system-titles used time:al.
 * [[GRC_services|grc]] now has access to time:su.
 * [[creport]] no longer has access to ns:dev, and access to pgl was added.
 * [[Shared_Database_services|sdb]] no longer has access to prepo:s, and access to srepo:u was added.
 * [[OLSC_services|olsc]] now hosts a new [[Services_API|service]], and access to arp:r was added. [[SVC]]s svcMapTransferMemory and svcUnmapTransferMemory are now accessible.
-* All web-applets now have access to [[SVC]]s svcMapPhysicalMemoryUnsafe/svcUnmapPhysicalMemoryUnsafe.
+* All web-applets now have access to [[SVC]]s svcMapPhysicalMemoryUnsafe/svcUnmapPhysicalMemoryUnsafe, but these aren't used in the main-codebin for any of these applets.
 * [[MyPage_Applet|LibraryAppletMyPage]] now has access to npns:s.