Nintendo Switch Brew

Thread Local Region: Difference between revisions

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This is the 0x200-byte thread-local-storage, the base address is loaded via ARM threadid register tpidrro_el0.
This is the 0x200-byte TLS (thread local storage). It's base address is loaded via ARM threadid register tpidrro_el0.
 
== Structure ==


= Structure =
{| class="wikitable" border="1"
{| class="wikitable" border="1"
|-
|-
Line 11: Line 10:
| 0x0
| 0x0
| 0x100
| 0x100
| [[IPC_Marshalling|IPC]] command buffer
| [[IPC_Marshalling|IPC]] command buffer.
|-
|-
| 0x100
| 0x100
| 0xF8
| 0xF8
| ?
| Unknown.
|-
|-
| 0x1F8
| 0x1F8
| 0x8
| 0x8
| Address of threadctx+0x58.
| Pointer to [[Thread_Local_Storage#Thread_context|thread context]].
|}
|}


== Userland context ==
= Userland context =
This is the structure of the 0x228-byte threadctx used by official userland software.
== Boot paramter ==
This is "nn::os::detail::g_OsBootParamter".


{| class="wikitable" border="1"
{| class="wikitable" border="1"
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! Description
! Description
|-
|-
| 0x0
| 0x00
| 0xA8
| 0x04
| ?
| Main thread handle.
|-
| 0x04
| 0x04
| Always 0.
|-
| 0x08
| 0x30
| Empty.
|}
 
== Resource manager storage ==
This is "nn::os::detail::g_OsResourceManagerStorage".
 
{| class="wikitable" border="1"
|-
! Offset
! Size
! Description
|-
| 0x00
| 0x04
| Always 0.
|-
| 0x04
| 0x10
| Process PRNG.
|-
| 0x14
| 0x04
| Padding.
|-
| 0x18
| 0x08
| Always set to 0.
|-
| 0x20
| 0x08
| [[SVC#svcGetInfo|AddressSpaceStart]] right shifted by 0x0C.
|-
| 0x28
| 0x08
| AddressSpaceEnd ([[SVC#svcGetInfo|AddressSpaceStart]] + [[SVC#svcGetInfo|AddressSpaceSize]]) right shifted by 0x0C and aligned to AddressSpaceAlign.
|-
| 0x30
| 0x08
| AddressSpaceAlign right shifted by 0x0C.
|-
| 0x38
| 0x08
| Always 0.
|-
| 0x40
| 0x08
| Always set to 0.
|-
| 0x48
| 0x08
| [[SVC#svcGetInfo|MapRegionBased]] right shifted by 0x0C.
|-
| 0x50
| 0x08
| MapRegionEnd ([[SVC#svcGetInfo|MapRegionBased]] + [[SVC#svcGetInfo|MapRegionSize]]) right shifted by 0x0C and aligned to MapRegionAlign.
|-
| 0x58
| 0x08
| MapRegionAlign right shifted by 0x0C.
|-
| 0x60
| 0x08
| Always 0.
|-
| 0x68
| 0x08
| Always 0.
|-
| 0x70
| 0x1D0
| Main [[Thread_Local_Storage#Thread_context|thread context]].
|-
| 0x240
| 0x08
| Pointer to main [[Thread_Local_Storage#Thread_context|thread context]].
|-
| 0x248
| 0x08
| Unknown.
|-
| 0x250
| 0x08
| Unknown.
|-
| 0x258
| 0x130
| Always empty?
|-
| 0x388
| 0x08
| Pointer to [[Thread_Local_Storage#Resource_manager_storage|resource manager storage]] + 0x388.
|-
| 0x390
| 0x08
| Pointer to [[Thread_Local_Storage#Resource_manager_storage|resource manager storage]] + 0x388.
|-
| 0x398
| 0x08
| Always 0.
|-
| 0x3A0
| 0x08
| Always 0.
|}
 
== Thread context ==
This structure is used for describing each thread's context. In the main thread's case, this structure comes from the [[Thread_Local_Storage#Resource_manager_storage|resource manager storage]].
 
{| class="wikitable" border="1"
|-
! Offset
! Size
! Description
|-
| 0x00
| 0x08
| Pointer to [[Thread_Local_Storage#Thread_context|thread context]] + 0x1C8.
|-
| 0x08
| 0x08
| Unknown.
|-
| 0x10
| 0x08
| Pointer to [[Thread_Local_Storage#Thread_context|thread context]] + 0x10.
|-
| 0x18
| 0x08
| Pointer to [[Thread_Local_Storage#Thread_context|thread context]] + 0x10.
|-
| 0x20
| 0x20
| Empty.
|-
| 0x40
| 0x04
| Thread status.
|-
| 0x44
| 0x04
| Thread priority minus 0x1C.
|-
| 0x48
| 0x08
| Thread stack base address.
|-
| 0x50
| 0x08
| Thread stack base address mirror.
|-
| 0x58
| 0x08
| Thread stack size.
|-
| 0x60
| 0x08
| Unknown.
|-
| 0x68
| 0x08
| Unknown.
|-
| 0x70
| 0x08
| Always 0?
|-
| 0x78
| 0x08
| Always 0?
|-
| 0x80
| 0x08
| Always 0?
|-
| 0x88
| 0x100
| Initially empty (contains unknown pointers).
|-
| 0x188
| 0x20
| Thread name.
|-
| 0x1A8
| 0x08
| Thread name address.
|-
| 0x1B0
| 0x04
| Always 0.
|-
| 0x1B4
| 0x04
| Always 0.
|-
| 0x1B8
| 0x04
| Thread handle.
|-
|-
| 0xA8
| 0x1BC
| 0x8
| 0x04
| Address of the stack-bottom-mirror which the thread was created with.
| Always 0.
|-
|-
| 0xB0
| 0x1C0
| 0x8
| 0x08
| Size of the stack.
| Thread global mutex.
|-
|-
| 0xB8
| 0x1C8
| 0x178
| 0x08
| ?
| Unknown.
|}
|}
Retrieved from "https://switchbrew.org/wiki/Thread_Local_Region"