Difference between revisions of "APT:PrepareToStartApplication"

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Line 9: Line 9:
 
|-
 
|-
 
| 1-4
 
| 1-4
| 0x10-byte title-info [[FS:GetProgramLaunchInfo|struct]]
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| [[Filesystem_services#ProgramInfo|Program Info]]
 
|-
 
|-
 
| 5
 
| 5
| u8 flag, usually zero. When zero, NS writes a title-info struct with programID=~0 and mediatype=NAND to the FIRM parameters structure.
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| u8 (changed to u32 with [[8.0.0-18]]), Flags (usually zero, when zero, NS writes a title-info struct with Program ID = ~0 and [[Filesystem_services#MediaType|MediaType]] = NAND to the [[FIRM]] parameters structure)
 
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| Result code
 
| Result code
 
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=Description=
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When the input title-info programID is zero, NS will load the actual programID via [[AMNet:GetTitleIDList]]. After doing some checks with the programID, NS will then set a NS state flag to value 1, then set the programID for AppID 0x300(application) to the input programID(or the one from GetTitleIDList). A mediatype field in NS state is also set to the input mediatype value(other state fields are set at this point as well).
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With [[8.0.0-18]], NS will set an u8 NS state field to value 1 when input flags bit8 is set. This is used with the PTMSYSM 0x040A0000 command code in NS, mentioned [[NCCH/Extended_Header|here]]. Note that the value of that NS state field is unreliable: as of the [[Home Menu]] version for system-version [[9.8.0-25]] the Home Menu code still writes to the flags field for this APT:PrepareToStartApplication command with an u8. Hence, the bit8 value that gets sent to NS is whatever was previously stored in the Home Menu thread-local-storage.

Latest revision as of 05:37, 22 November 2015

Request[edit]

Index Word Description
0 Header code [0x00150140]
1-4 Program Info
5 u8 (changed to u32 with 8.0.0-18), Flags (usually zero, when zero, NS writes a title-info struct with Program ID = ~0 and MediaType = NAND to the FIRM parameters structure)

Response[edit]

Index Word Description
0 Header code
1 Result code

Description[edit]

When the input title-info programID is zero, NS will load the actual programID via AMNet:GetTitleIDList. After doing some checks with the programID, NS will then set a NS state flag to value 1, then set the programID for AppID 0x300(application) to the input programID(or the one from GetTitleIDList). A mediatype field in NS state is also set to the input mediatype value(other state fields are set at this point as well).

With 8.0.0-18, NS will set an u8 NS state field to value 1 when input flags bit8 is set. This is used with the PTMSYSM 0x040A0000 command code in NS, mentioned here. Note that the value of that NS state field is unreliable: as of the Home Menu version for system-version 9.8.0-25 the Home Menu code still writes to the flags field for this APT:PrepareToStartApplication command with an u8. Hence, the bit8 value that gets sent to NS is whatever was previously stored in the Home Menu thread-local-storage.