Switch 2: Compatibility Mode: Difference between revisions
Add at least some basic info of nnCompatTrampoline instead of leaving it empty... |
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= NPDM Adjustments = | = NPDM Adjustments = | ||
* Game has access to SVC 0x80 even though it's not in the game NPDM. | * Game has access to SVC 0x54, 0x80 even though it's not in the game NPDM. | ||
* Game has CoreMask 0x3F (so access to core0-5) even though the game NPDM only has CoreMask 0x7. | * Game has CoreMask 0x3F (so access to core0-5) even though the game NPDM only has CoreMask 0x7. | ||
* It's unknown if the service whitelist is updated for the game when running in Compatibility mode. | * It's unknown if the service whitelist is updated for the game when running in Compatibility mode. | ||
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Below is a breakdown what some of the hooks and what their purpose is. | Below is a breakdown what some of the hooks and what their purpose is. | ||
== Modules == | |||
Rtld is identical besides the extra page at the end of .bss for [[#CompatibilityParameter|CompatibilityParameter]]. | |||
The compat modules are loaded between the main module and the (sub)sdk* modules. | |||
The existing modules are not directly modified. | |||
== CompatibilityParameter == | == CompatibilityParameter == | ||
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|- | |- | ||
|} | |} | ||
= ApplicationCompatibilityInfo = | |||
The [[Switch 2: Title list|ApplicationCompatibilityInfo]] SystemData contains "ApplicationCompatibilityInfo.json". | |||
The json "records" contains an array, each object entry then contains the following: | |||
* "application_id": "0x<lowercase hex ApplicationId>" | |||
* "target_max_version": <value> (normally u32-max) | |||
* "application_layer_info": This object contains various number fields, only fields needed by the current entry are present. "graphics_config", "misc_config", ... | |||
** The data from here is likely passed as input to [[#CompatibilityParameter|CompatibilityParameter]]. | |||
= nnCompatTrampoline = | = nnCompatTrampoline = | ||
This module contains, in particular, game-specific patches for at least 5 games. They follow a pattern of "nnCompatPatchFor****", where the last 5 digits are the game code (for example, "nnCompatPatchForAyl8a" for Metroid: Dread). | |||
= nnCompatThin = | = nnCompatThin = | ||
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|- | |- | ||
| nn::vi::* || Translation layer because vi:u was removed? | | nn::vi::* || Translation layer because vi:u was removed? | ||
|- | |||
| nn::pl::IsRunningOnOunce || Returns 1 instead of 0. | |||
|} | |} | ||