(Switch 2) Compatibility Mode: Difference between revisions

(10 intermediate revisions by the same user not shown)

Line 21:

To retrieve this pointer, [[#nnCompatThin|nnCompatThin]] intercepts the nnosInitialize function and retrieves it from there. Normally, a game doesn't use the ProgramParameter so it doesn't care this parameter was passed.

{| class=wikitable

! Offset || Type || Name

|-

| 0x00 || ModuleSdkInfo[11] || Modules

|-

| 0xB0 || u64 || ModulesCount

|-

| 0xB8 || u64 || GraphicsControlData

|-

| 0xC0 || u64 || MovieControlData

|-

| 0xC8 || u64 || AudioControlData

|-

| 0xD0 || u64 || [[#MiscControlData]]

|}

=== MiscControlData ===

{| class=wikitable

! Bit || Name || Description

|-

| 0 || PreventShaderCacheOpenFile || Prevents game from opening file: "ROM:/data/scaleform_cache/GFxShaders.cache".

|-

| 1 || PreventShaderCacheGetEntryType || Prevents game from getting the entry type on 5 different hardcoded paths.

|-

| 2 || PreventShaderCacheOpenDirectory || Prevents game from opening directory: "host:/shaders/build/"

|-

| 4 || SerializeSavedataAccess || A global mutex is taken when a file starting with "savedata" is opened, and held until the file has been closed. Commit-action also takes the mutex, so the commit will not complete until the file has been closed.

|-

| 6 || PreventNegativeVibrationValue ||

|-

| 10 || NeedsWaitingLaunchLogo ||

|-

| 13 || ExtraSleepForOfflineWebApplet ||

|-

|}

=== ModuleSdkInfo ===

{| class=wikitable

! Offset || Type || Name

|-

| 0x00 || const char* || SdkNameStringPtr. Points to a string of the form "SDK MW+Nintendo+NintendoSdk_nnSdk-XX_Y_Z-Release".

|-

| 0x08 || u32 || SdkNameStringLength

|-

|}

= nnCompatTrampoline =

Line 27:

Line 73:

{| class=wikitable

! Hooked Symbol || Difference

! Hooked Symbol || Difference || Conditional

|-

| nnosInitialize || Captures the ProgramArgument parameter where the [[#CompatibilityParameter]] is stored. ||

|-

| nn::os::CreateThread || No change. ||

|-

| nn::os::SetThreadCoreMask || No change. ||

|-

| nn::os::GetThreadAvailableCoreMask, nn::os::GetThreadAvailableCoreMask || Returns actual core mask masked with 0x7, effectively pretending that there are only 3 CPU cores available. ||

|-

| nn::audio::GetAudioInName || If the primary audio in name is "XUac", it returns the secondary device name instead. Presumably, the "XUac" device has been removed in Switch 2. ||

|-

| nn::audio::GetReleasedWaveBuffer || Now returns NULL under certain circumstances. || AudioControlData bit0

|-

| nn::web::OfflineWebSession::Appear || Added sleep 50000000 before calling the original function. || MiscControlData bit13

|-

| ~~nnosInitialize~~ || ~~Captures the ProgramArgument parameter where~~ the ~~[[#CompatibilityParameter]] is stored~~.

| nn::ssl::Connection::SetSocketDescriptor || Calls nn::socket::Fnctl(..., 3); nn::socket::Fnctl(..., 4); on the socket fd. || MiscControlData bit15

|-

| nn::os::~~CreateThread~~ || No ~~change~~.

| nn::swkbd::InlineKeyboard::GetImage, nn::swkbd::InlineKeyboard::Calc || Takes a shared mutex before calling original functions. No other changes. Probably prevents a race condition that only manifests on Switch 2. ||

|-

| nn::os::~~SetThreadCoreMask~~ || ~~No change~~.

| nn::socket::Socket || If nn::socket::IsInitialized() is 0, sleep for 1 second, and see it reaches 1 before calling the original function. Probably prevents a race condition that only manifests on Switch 2. || MiscControlData bit9

|-

| nn::os::~~GetThreadAvailableCoreMask~~ || ~~Returns actual core mask masked with 0x7, effectively pretending that there are only 3 CPU cores available~~.

| nn::os::TimedAcquireSemaphore || Force arg1=true. || MiscControlData bit8.

|-

| nn::~~audio~~::~~GetAudioInName~~ || ~~If the primary audio in name is "XUac",~~ it ~~returns the secondary device name instead~~. ~~Presumably, the "XUac" device has been removed in Switch 2~~.

| nn::os::QueryMemoryInfo,nn::os::QueryMemoryInfoForDebug || Hides stolen Heap memory that it uses for itself... ||

|-

| nn::~~audio~~::~~GetReleasedWaveBuffer~~ || ~~Now returns NULL under certain circumstances~~.

| nn::hid::VibrationPlayer::SetCurrentPosition || If position is negative, drop the call. || MiscControlData bit6

|}

@@ Line 21: / Line 21: @@
 To retrieve this pointer, [[#nnCompatThin|nnCompatThin]] intercepts the nnosInitialize function and retrieves it from there. Normally, a game doesn't use the ProgramParameter so it doesn't care this parameter was passed.
+{| class=wikitable
+! Offset || Type || Name
+|-
+| 0x00 || ModuleSdkInfo[11] || Modules
+|-
+| 0xB0 || u64 || ModulesCount
+|-
+| 0xB8 || u64 || GraphicsControlData
+|-
+| 0xC0 || u64 || MovieControlData
+|-
+| 0xC8 || u64 || AudioControlData
+|-
+| 0xD0 || u64 || [[#MiscControlData]]
+|}
+=== MiscControlData ===
+{| class=wikitable
+! Bit || Name || Description
+|-
+| 0 || PreventShaderCacheOpenFile || Prevents game from opening file: "ROM:/data/scaleform_cache/GFxShaders.cache".
+|-
+| 1 || PreventShaderCacheGetEntryType || Prevents game from getting the entry type on 5 different hardcoded paths.
+|-
+| 2 || PreventShaderCacheOpenDirectory || Prevents game from opening directory: "host:/shaders/build/"
+|-
+| 4 || SerializeSavedataAccess || A global mutex is taken when a file starting with "savedata" is opened, and held until the file has been closed. Commit-action also takes the mutex, so the commit will not complete until the file has been closed.
+|-
+| 6 || PreventNegativeVibrationValue ||
+|-
+| 10 || NeedsWaitingLaunchLogo ||
+|-
+| 13 || ExtraSleepForOfflineWebApplet ||
+|-
+|}
+=== ModuleSdkInfo ===
+{| class=wikitable
+! Offset || Type || Name
+|-
+| 0x00 || const char* || SdkNameStringPtr. Points to a string of the form "SDK MW+Nintendo+NintendoSdk_nnSdk-XX_Y_Z-Release".
+|-
+| 0x08 || u32 || SdkNameStringLength
+|-
+|}
 = nnCompatTrampoline =
@@ Line 27: / Line 73: @@
 {| class=wikitable
-! Hooked Symbol || Difference
+! Hooked Symbol || Difference || Conditional
+|-
+| nnosInitialize || Captures the ProgramArgument parameter where the [[#CompatibilityParameter]] is stored. ||
+|-
+| nn::os::CreateThread || No change. ||
+|-
+| nn::os::SetThreadCoreMask || No change. ||
+|-
+| nn::os::GetThreadAvailableCoreMask, nn::os::GetThreadAvailableCoreMask || Returns actual core mask masked with 0x7, effectively pretending that there are only 3 CPU cores available. ||
+|-
+| nn::audio::GetAudioInName || If the primary audio in name is "XUac", it returns the secondary device name instead. Presumably, the "XUac" device has been removed in Switch 2. ||
+|-
+| nn::audio::GetReleasedWaveBuffer || Now returns NULL under certain circumstances. || AudioControlData bit0
+|-
+| nn::web::OfflineWebSession::Appear || Added sleep 50000000 before calling the original function. || MiscControlData bit13
 |-
-| nnosInitialize || Captures the ProgramArgument parameter where the [[#CompatibilityParameter]] is stored.
+| nn::ssl::Connection::SetSocketDescriptor || Calls nn::socket::Fnctl(..., 3); nn::socket::Fnctl(..., 4); on the socket fd. || MiscControlData bit15
 |-
-| nn::os::CreateThread || No change.
+| nn::swkbd::InlineKeyboard::GetImage, nn::swkbd::InlineKeyboard::Calc || Takes a shared mutex before calling original functions. No other changes. Probably prevents a race condition that only manifests on Switch 2. ||
 |-
-| nn::os::SetThreadCoreMask || No change.
+| nn::socket::Socket || If nn::socket::IsInitialized() is 0, sleep for 1 second, and see it reaches 1 before calling the original function. Probably prevents a race condition that only manifests on Switch 2. || MiscControlData bit9
 |-
-| nn::os::GetThreadAvailableCoreMask || Returns actual core mask masked with 0x7, effectively pretending that there are only 3 CPU cores available.
+| nn::os::TimedAcquireSemaphore || Force arg1=true. || MiscControlData bit8.
 |-
-| nn::audio::GetAudioInName || If the primary audio in name is "XUac", it returns the secondary device name instead. Presumably, the "XUac" device has been removed in Switch 2.
+| nn::os::QueryMemoryInfo,nn::os::QueryMemoryInfoForDebug || Hides stolen Heap memory that it uses for itself... ||
 |-
-| nn::audio::GetReleasedWaveBuffer || Now returns NULL under certain circumstances.
+| nn::hid::VibrationPlayer::SetCurrentPosition || If position is negative, drop the call. || MiscControlData bit6
 |}