/********************************** (C) COPYRIGHT  *******************************
* File Name          : core_riscv.c
* Author             : WCH
* Version            : V1.0.0
* Date               : 2020/04/30
* Description        : RISC-V Core Peripheral Access Layer Source File
*******************************************************************************/
#include <stdint.h>

/* define compiler specific symbols */
#if defined ( __CC_ARM   )
  #define __ASM            __asm                                      /*!< asm keyword for ARM Compiler          */
  #define __INLINE         __inline                                   /*!< inline keyword for ARM Compiler       */

#elif defined ( __ICCARM__ )
  #define __ASM           __asm                                       /*!< asm keyword for IAR Compiler          */
  #define __INLINE        inline                                      /*!< inline keyword for IAR Compiler. Only avaiable in High optimization mode! */

#elif defined   (  __GNUC__  )
  #define __ASM            __asm                                      /*!< asm keyword for GNU Compiler          */
  #define __INLINE         inline                                     /*!< inline keyword for GNU Compiler       */

#elif defined   (  __TASKING__  )
  #define __ASM            __asm                                      /*!< asm keyword for TASKING Compiler      */
  #define __INLINE         inline                                     /*!< inline keyword for TASKING Compiler   */

#endif


/**
 * @brief  Return the Floating-Point Accrued Exceptions
 */
uint32_t __get_FFLAGS(void)
{
  uint32_t result;

  __ASM volatile ( "csrr %0," "fflags" : "=r" (result) );
  return (result);
}

/**
 * @brief  Set the Floating-Point Accrued Exceptions
 */
void __set_FFLAGS(uint32_t value)
{
  __ASM volatile ("csrw fflags, %0" : : "r" (value) );
}

/**
 * @brief  Return the Floating-Point Dynamic Rounding Mode
 */
uint32_t __get_FRM(void)
{
  uint32_t result;

  __ASM volatile ( "csrr %0," "frm" : "=r" (result) );
  return (result);
}

/**
 * @brief  Set the Floating-Point Dynamic Rounding Mode
 */
void __set_FRM(uint32_t value)
{
  __ASM volatile ("csrw frm, %0" : : "r" (value) );
}

/**
 * @brief  Return the Floating-Point Control and Status Register
 */
uint32_t __get_FCSR(void)
{
  uint32_t result;

  __ASM volatile ( "csrr %0," "fcsr" : "=r" (result) );
  return (result);
}

/**
 * @brief  Set the Floating-Point Control and Status Register
 */
void __set_FCSR(uint32_t value)
{
  __ASM volatile ("csrw fcsr, %0" : : "r" (value) );
}

/**
 * @brief  Return the Machine Status Register
 */
uint32_t __get_MSTATUS(void)
{
  uint32_t result;

  __ASM volatile ( "csrr %0," "mstatus" : "=r" (result) );
  return (result);
}

/**
 * @brief  Set the Machine Status Register
 */
void __set_MSTATUS(uint32_t value)
{
  __ASM volatile ("csrw mstatus, %0" : : "r" (value) );
}

/**
 * @brief  Return the Machine ISA Register
 */
uint32_t __get_MISA(void)
{
  uint32_t result;

  __ASM volatile ( "csrr %0," "misa" : "=r" (result) );
  return (result);
}

/**
 * @brief  Set the Machine ISA Register
 */
void __set_MISA(uint32_t value)
{
  __ASM volatile ("csrw misa, %0" : : "r" (value) );
}

/**
 * @brief  Return the Machine Interrupt Enable Register
 */
uint32_t __get_MIE(void)
{
  uint32_t result;

  __ASM volatile ( "csrr %0," "mie" : "=r" (result) );
  return (result);
}

/**
 * @brief  Set the Machine ISA Register
 */
void __set_MIE(uint32_t value)
{
  __ASM volatile ("csrw mie, %0" : : "r" (value) );
}


/**
 * @brief  Return the Machine Trap-Vector Base-Address Register
 */
uint32_t __get_MTVEC(void)
{
  uint32_t result;

  __ASM volatile ( "csrr %0," "mtvec" : "=r" (result) );
  return (result);
}

/**
 * @brief  Set the Machine Trap-Vector Base-Address Register
 */
void __set_MTVEC(uint32_t value)
{
  __ASM volatile ("csrw mtvec, %0" : : "r" (value) );
}

/**
 * @brief  Return the Machine Seratch Register
 */
uint32_t __get_MSCRATCH(void)
{
  uint32_t result;

  __ASM volatile ( "csrr %0," "mscratch" : "=r" (result) );
  return (result);
}

/**
 * @brief  Set the Machine Seratch Register
 */
void __set_MSCRATCH(uint32_t value)
{
  __ASM volatile ("csrw mscratch, %0" : : "r" (value) );
}

/**
 * @brief  Return the Machine Exception Program Register
 */
uint32_t __get_MEPC(void)
{
  uint32_t result;

  __ASM volatile ( "csrr %0," "mepc" : "=r" (result) );
  return (result);
}

/**
 * @brief  Set the Machine Exception Program Register
 */
void __set_MEPC(uint32_t value)
{
  __ASM volatile ("csrw mepc, %0" : : "r" (value) );
}

/**
 * @brief  Return the Machine Cause Register
 */
uint32_t __get_MCAUSE(void)
{
  uint32_t result;

  __ASM volatile ( "csrr %0," "mcause" : "=r" (result) );
  return (result);
}

/**
 * @brief  Set the Machine Cause Register
 */
void __set_MCAUSE(uint32_t value)
{
  __ASM volatile ("csrw mcause, %0" : : "r" (value) );
}

/**
 * @brief  Return the Machine Trap Value Register
 */
uint32_t __get_MTVAL(void)
{
  uint32_t result;

  __ASM volatile ( "csrr %0," "mtval" : "=r" (result) );
  return (result);
}

/**
 * @brief  Set the Machine Trap Value Register
 */
void __set_MTVAL(uint32_t value)
{
  __ASM volatile ("csrw mtval, %0" : : "r" (value) );
}

/**
 * @brief  Return the Machine Interrupt Pending Register
 */
uint32_t __get_MIP(void)
{
  uint32_t result;

  __ASM volatile ( "csrr %0," "mip" : "=r" (result) );
  return (result);
}

/**
 * @brief  Set the Machine Interrupt Pending Register
 */
void __set_MIP(uint32_t value)
{
  __ASM volatile ("csrw mip, %0" : : "r" (value) );
}

/**
 * @brief  Return Lower 32 bits of Cycle counter
 */
uint32_t __get_MCYCLE(void)
{
  uint32_t result;

  __ASM volatile ( "csrr %0," "mcycle" : "=r" (result) );
  return (result);
}

/**
 * @brief  Set Lower 32 bits of Cycle counter
 */
void __set_MCYCLE(uint32_t value)
{
  __ASM volatile ("csrw mcycle, %0" : : "r" (value) );
}

/**
 * @brief  Return Upper 32 bits of Cycle counter
 */
uint32_t __get_MCYCLEH(void)
{
  uint32_t result;

  __ASM volatile ( "csrr %0," "mcycleh" : "=r" (result) );
  return (result);
}

/**
 * @brief  Set Upper 32 bits of Cycle counter
 */
void __set_MCYCLEH(uint32_t value)
{
  __ASM volatile ("csrw mcycleh, %0" : : "r" (value) );
}

/**
 * @brief  Return Lower 32 bits of Instructions-retired counter
 */
uint32_t __get_MINSTRET(void)
{
  uint32_t result;

  __ASM volatile ( "csrr %0," "minstret" : "=r" (result) );
  return (result);
}

/**
 * @brief  Set Lower 32 bits of Instructions-retired counter
 */
void __set_MINSTRET(uint32_t value)
{
  __ASM volatile ("csrw minstret, %0" : : "r" (value) );
}

/**
 * @brief  Return Upper 32 bits of Instructions-retired counter
 */
uint32_t __get_MINSTRETH(void)
{
  uint32_t result;

  __ASM volatile ( "csrr %0," "minstreth" : "=r" (result) );
  return (result);
}

/**
 * @brief  Set Upper 32 bits of Instructions-retired counter
 */
void __set_MINSTRETH(uint32_t value)
{
  __ASM volatile ("csrw minstreth, %0" : : "r" (value) );
}

/**
 * @brief  Return Vendor ID Register
 */
uint32_t __get_MVENDORID(void)
{
  uint32_t result;

  __ASM volatile ( "csrr %0," "mvendorid" : "=r" (result) );
  return (result);
}

/**
 * @brief  Return Machine Architecture ID Register
 */
uint32_t __get_MARCHID(void)
{
  uint32_t result;

  __ASM volatile ( "csrr %0," "marchid" : "=r" (result) );
  return (result);
}

/**
 * @brief  Return Machine Implementation ID Register
 */
uint32_t __get_MIMPID(void)
{
  uint32_t result;

  __ASM volatile ( "csrr %0," "mimpid" : "=r" (result) );
  return (result);
}

/**
 * @brief  Return Hart ID Register
 */
uint32_t __get_MHARTID(void)
{
  uint32_t result;

  __ASM volatile ( "csrr %0," "mhartid" : "=r" (result) );
  return (result);
}