Prior to 3.0.0, ro was included as part of Loader services. Despite the separation, the service name ldr:ro is retained to maintain compatibility with old games.
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.
| Cmd | Name |
|---|---|
| 0 | #LoadNro |
| 1 | UnloadNro |
| 2 | #LoadNrr |
| 3 | UnloadNrr |
| 4 | #Initialize |
| 10 | [7.0.0+] #LoadNrrEx |
LoadNro
| Word | Value |
|---|---|
| 0 | 0x00000004 |
| 1 | 0x80000012 |
| 2 | 0x00000001 |
| 0-1 | Pid |
| 0 | "SCFI" |
| 1 | 0x00000000 |
| 2 | Always 0. |
| 3 | Nro heap address |
| 4 | Nro size |
| 5 | Bss backing heap address |
| 6 | Bss size |
LoadNrr
| Word | Value |
|---|---|
| 0 | 0x00000004 |
| 1 | 0x8000000E |
| 2 | 0x00000001 |
| 0-1 | Pid |
| 0 | "SFCI" |
| 1 | 0x00000002 |
| 2 | Always 0. |
| 3 | Nrr address |
| 4 | Nrr size |
[7.0.0+] NrrKind must be 0 (User) for this function to succeed.
Initialize
| Word | Value |
|---|---|
| 0 | 0x00000004 |
| 1 | 0x8000000A |
| 2 | 0x00000003 |
| 0-1 | Pid |
| 2 | Process handle (0xFFFF8001) |
| 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, NrrKind must be 1 (JitPlugin). When called from ldr:ro session, NrrKind must be 0 (User).