/*---------------------------------------------------------------------------*
  Project: OS API
  File:    OSCoroutine.h

  Copyright (C) Nintendo.  All rights reserved.

  These coded instructions, statements, and computer programs contain
  proprietary information of Nintendo of America Inc. and/or Nintendo
  Company Ltd., and are protected by Federal copyright law.  They may
  not be disclosed to third parties or copied or duplicated in any form,
  in whole or in part, without the prior written consent of Nintendo.

 *---------------------------------------------------------------------------*/

#ifndef __OSCOROUTINE_H__
#define __OSCOROUTINE_H__

#ifdef __cplusplus
extern "C" {
#endif

#define VOLATILE_REG_NUM 14
#define NONVOLATILE_REG_NUM 18

typedef struct
{
    u32 lr;
    u32 cr;
    u32 gqr1;
    u32 r1;  // stack pointer (sp)
    u32 r2;  // read-only small data
    u32 r13; // read-write small data
    u32 gpr[NONVOLATILE_REG_NUM];
    f64 fpr[NONVOLATILE_REG_NUM];
    f64 psr[NONVOLATILE_REG_NUM];
} OSCoroutine;

void OSInitCoroutine(OSCoroutine *coroutine, void *pc, void *sp);
void OSLoadCoroutine(OSCoroutine *coroutine, void *retval);
void* OSSaveCoroutine(OSCoroutine *coroutine);
void OSSwitchCoroutine(OSCoroutine *current, OSCoroutine *next);


#ifdef __cplusplus
}
#endif

#endif // __OSCOROUTINE_H__