source: ps2launchargs/source/uLaunchELF/hdl_rpc.c@ 1102

#include <tamtypes.h>
#include <kernel.h>
#include <sifrpc.h>
#include <stdarg.h>
#include <string.h>
#include <stdio.h>

#include "launchelf.h"

static SifRpcClientData_t client __attribute__((aligned(64)));
static int Rpc_Buffer[1024] __attribute__((aligned(64)));

typedef struct {
  char Partition_Name [32 + 1];
} Rpc_Packet_Send_GetInfo;

typedef struct {
        char OldName[64];
        char NewName[64];
} Rpc_Packet_Send_Rename;

int Hdl_Inited = 0;

int Hdl_Info_BindRpc() {                           
        int ret;
        int retryCount = 0x1000;

        while(retryCount--) {
                ret = SifBindRpc( &client, HDL_IRX, 0);
                if ( ret  < 0)  {
                                                printf("Hdl Info: EE Bind RPC Error.\n");
                  return -1;
                }
                if (client.server != 0){
                        printf("Hdl Info: EE Bind RPC Set.\n");
                        break;
                }

                // short delay 
                ret = 0x10000;
                while(ret--) asm("nop\nnop\nnop\nnop");
        }

        Hdl_Inited = 1;
        return retryCount;
}

int HdlGetGameInfo(char *PartName, GameInfo *Game){

        Rpc_Packet_Send_GetInfo *Packet = (Rpc_Packet_Send_GetInfo *)Rpc_Buffer;

        if(!Hdl_Inited) return -1;

        strcpy(Packet->Partition_Name, PartName);

        SifCallRpc(&client, HDL_GETINFO, 0, (void*)Rpc_Buffer, sizeof(Rpc_Packet_Send_GetInfo), (void*)Rpc_Buffer, sizeof(GameInfo)+4,0,0);

        memcpy(Game, ((void *)Rpc_Buffer)+4, sizeof(GameInfo));

        return Rpc_Buffer[0];
}

int HdlRenameGame(char* OldName, char* NewName){

 Rpc_Packet_Send_Rename *Packet = (Rpc_Packet_Send_Rename *)Rpc_Buffer;

 if(!Hdl_Inited) return -1;

 strcpy(Packet->OldName, OldName);
 strcpy(Packet->NewName, NewName);

 SifCallRpc(&client, HDL_RENAME, 0, (void*)(Rpc_Buffer), sizeof(Rpc_Packet_Send_Rename), (void*)Rpc_Buffer, 4,0,0);

 return Rpc_Buffer[0];
}