Changes

nnMain just initializes [[RO_services|ro:1]], then starts hosting the service from the main-thread with max_sessions=1 (threads are not created for service-hosting).

nnMain just initializes [[RO_services|ro:1]], then starts hosting the service from the main-thread with max_sessions=1 (threads are not created for service-hosting).

This is intended to only be used by Applications. The initialization in sdknso uses [[Applet_Manager_services#PrepareForJit|PrepareForJit]] at the start. sdknso later uses [[SVC|svcCreateCodeMemory]].

This is intended to only be used by Applications. The service-init in sdknso just uses [[Applet_Manager_services#PrepareForJit|PrepareForJit]] at the start, then gets the service.

 

sdknso CreateJitEnvironment implements the remaining initialization. After some validation, this uses [[SVC|svcCreateCodeMemory]] (can be called twice). Then [[#CreateJitEnvironment]] is used. TransferMemory with an user-specified buffer is created with permissions=None, which is then used with [[#LoadPlugin]]. When successful, this lastly uses [[#GetCodeAddress]].

This loads the user-specified [[NRO]] into sysmodule-context ("DllPlugin"), and calls various symbols from that NRO. It seems the code writing (in cmd GenerateCode) is done via symbol-calling, allowing the NRO to handle input_buffer->code translation+writing.

This loads the user-specified [[NRO]] into sysmodule-context ("DllPlugin"), and calls various symbols from that NRO. It seems the code writing (in cmd GenerateCode) is done via symbol-calling, allowing the NRO to handle input_buffer->code translation+writing.

{| class="wikitable" border="1"

{| class="wikitable" border="1"

|-

|-

! Cmd || Name || Notes

! Cmd || Name

|-

|-

| 0 || CreateJitEnvironment || Returns an [[#IJitEnvironment]]

| 0 || [[#CreateJitEnvironment]]

|-

|-

|}

|}

= IJitEnvironment =

= IJitEnvironment =

! Cmd || Name

! Cmd || Name

|-

|-

| 0 || GenerateCode

| 0 || [[#GenerateCode]]

|-

|-

| 1 || Control

| 1 || [[#Control]]

|-

|-

| 1000 || LoadPlugin

| 1000 || [[#LoadPlugin]]

|-

|-

| 1001 || GetCodeAddress

| 1001 || [[#GetCodeAddress]]

|}

|}