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Loader services: Difference between revisions

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= ldr:dmnt =
= ldr:shel =
This is "nn::ldr::detail::IDebugMonitorInterface".
This is "nn::ldr::detail::IShellInterface".


{| class="wikitable" border="1"
{| class="wikitable" border="1"
Line 6: Line 6:
! Cmd || Name
! Cmd || Name
|-
|-
| 0 || [[Loader_services#AddProcessToDebugLaunchQueue|AddProcessToDebugLaunchQueue]]
| 0 || [[#SetProgramArgument]]
|-
| 1 || [[Loader_services#ClearDebugLaunchQueue|ClearDebugLaunchQueue]]
|-
|-
| 2 || [[Loader_services#GetNsoInfos|GetNsoInfos]]
| 1 || [[#FlushArguments]]
|}
|}


== AddProcessToDebugLaunchQueue ==
== SetProgramArgument ==
Same as [[Loader_services#AddProcessToLaunchQueue|AddProcessToLaunchQueue]] but for processes marked as debug.
Takes a type-0x9 input buffer with launch arguments (as string), an u32 (size of arguments string), and an input title-id.


== ClearDebugLaunchQueue ==
Loads a process for the specified title-id and passes along the supplied arguments.
Same as [[Loader_services#ClearLaunchQueue|ClearLaunchQueue]].
Loaded processes are kept in a queue waiting for PM to launch them. The maximum number of waiting processes in this list is 10.


== GetNsoInfos ==
== FlushArguments ==
Takes in a u64 ProcessID, and a C descriptor. Returns the number of NsoInfos copied to output.
Clears the loaded processes waiting queue.


NsoInfo has the following layout:
= ldr:dmnt =
This is "nn::ldr::detail::IDebugMonitorInterface".


{| class="wikitable" border="1"
{| class="wikitable" border="1"
|-
|-
! Offset
! Cmd || Name
! Size
! Description
|-
|-
| 0x0
| 0 || [[#SetProgramArgument]]
| 0x20
| "Build ID", from NSO header+0x40.
|-
|-
| 0x20
| 1 || [[#FlushArguments]]
| 0x8
| Mapped address for this NSO
|-
| 0x28
| 0x8
| Mapped size for this NSO
|-
|-
| 2 || [[#GetProcessModuleInfo]]
|}
|}


== GetProcessModuleInfo ==
Takes in a u64 Process ID, and a C descriptor out array of [[#ModuleInfo]]s. Returns the number of ModuleInfos copied to output.


= ldr:pm =
= ldr:pm =
Line 56: Line 48:
| 1 || [[#GetProgramInfo]]
| 1 || [[#GetProgramInfo]]
|-
|-
| 2 || [[#RegisterTitle]]
| 2 || [[#PinProgram]]
|-
| 3 || [[#UnpinProgram]]
|-
|-
| 3 || [[#UnregisterTitle]]
| 4 || [10.0.0+] [[#SetEnabledProgramVerification]]
|}
|}


== GetProgramInfo ==
== GetProgramInfo ==
Takes a TitleId + StorageId, parses the NPDM, and writes output to a C descriptor buffer as follows:
Takes an ncm::ProgramLocation, parses the NPDM, and writes a [[#ProgramInfo]] to a C descriptor buffer.
 
== PinProgram ==
Takes an ncm::ProgramLocation, returns a u64 "PinId".
 
== UnpinProgram ==
Takes a PinId from [[#PinProgram]].
 
== SetEnabledProgramVerification ==
Seems to sets a global flag to inputval & 1.


When the flag is zero, it will set ret=0 instead of ret={error} when verifying the fixed-key [[NPDM]] ACID signature fails. This also skips verifying the [[NCA_Format|NCA Header]] signature using the ACID key. Note that if verifying the fixed-key ACID signature is successful, and verifying the ACID-key NCA header signature fails, it will throw an error and abort.
= ModuleInfo =
{| class="wikitable" border="1"
|-
! Offset
! Size
! Description
|-
| 0x0
| 0x20
| ModuleId
|-
| 0x20
| 0x8
| ImageAddress
|-
| 0x28
| 0x8
| ImageSize
|}
= ProgramInfo =
{| class="wikitable" border="1"
{| class="wikitable" border="1"
|-
|-
Line 126: Line 152:
| ACI0 [[NPDM#FS Access Control|FS Access Control]]
| ACI0 [[NPDM#FS Access Control|FS Access Control]]
|}
|}
== RegisterTitle ==
Takes a TitleId + StorageId, returns an index.
== UnregisterTitle ==
Takes the index from [[#RegisterTitle]].
= ldr:shel =
This is "nn::ldr::detail::IShellInterface".
{| class="wikitable" border="1"
|-
! Cmd || Name
|-
| 0 || [[#AddProcessToLaunchQueue]]
|-
| 1 || [[#ClearLaunchQueue]]
|}
== AddProcessToLaunchQueue ==
Takes a type-0x19 input buffer with launch arguments (as string), an u32 (size of arguments string), and an input title-id.
Loads a process for the specified title-id and passes along the supplied arguments.
Loaded processes are kept in a queue waiting for PM to launch them. The maximum number of waiting processes in this list is 10.
== ClearLaunchQueue ==
Clears the loaded processes waiting queue.
= ldr:ro =
= ro:1 =
[1.0.0-2.3.0] This is "nn::ldr::detail::IRoInterface"
[3.0.0+] This is "nn::ro::detail::IRoInterface".
[7.0.0+] ro:1 was added, and also creates nn::ro::detail::IRoInterface objects.
{| class="wikitable" border="1"
|-
! Cmd || Name
|-
| 0 || [[#LoadNro]]
|-
| 1 || UnloadNro
|-
| 2 || [[#LoadNrr]]
|-
| 3 || UnloadNrr
|-
| 4 || [[#Initialize]]
|-
| 10 || [7.0.0+] [[#LoadNrrEx]]
|}
== LoadNro ==
{| class="wikitable" border="1"
|-
! Word || Value
|-
| 0 || 0x00000004
|-
| 1 || 0x80000012
|-
| 2 || 0x00000001
|- style="border-top: double"
| 0-1 || Pid
|- style="border-top: double"
| 0 || "SCFI"
|-
| 1 || 0x00000000
|-
| 2 || Always 0.
|-
| 3 || Nro heap address
|-
| 4 || Nro size
|-
| 5 || Bss backing heap address
|-
| 6 || Bss size
|}
== LoadNrr ==
[7.0.0+] A new 8-bit field at NRR + 0x33C (previously padding) must be 0 for this function to succeed.
{| class="wikitable" border="1"
|-
! Word || Value
|-
| 0 || 0x00000004
|-
| 1 || 0x8000000E
|-
| 2 || 0x00000001
|-
|- style="border-top: double"
| 0-1 || Pid
|- style="border-top: double"
| 0 || "SFCI"
|-
| 1 || 0x00000002
|-
| 2 || Always 0.
|-
| 3 || Nrr address
|-
| 4 || Nrr size
|}
== Initialize ==
{| class="wikitable" border="1"
|-
! Word || Value
|-
| 0 || 0x00000004
|-
| 1 || 0x8000000A
|-
| 2 || 0x00000003
|- style="border-top: double"
| 0-1 || Pid
|-
| 2 || Process handle (0xFFFF8001)
|- style="border-top: double"
| 0 || "SFCI"
|-
| 1 || 0x00000004
|-
| 2 || Always 0.
|}
== LoadNrrEx ==
Takes in a u64 nrr_address, a u64 nrr_size, a pid descriptor, and a process handle.
First, this validates that the pid descriptor matches the pid for the process handle sent to this->Initialize() earlier.
Then, this calls the same function as LoadNrr, except using the passed process handle instead of the one sent to Initialize.
When called from an ro:1 session, the field at NRR header + 0x33C must be 0x1. When called from ldr:ro session, the field at NRR header + 0x33C must be 0x0.


[[Category:Services]]
[[Category:Services]]
Retrieved from "https://switchbrew.org/wiki/Loader_services"