/*******************************************************************************
*                                                                              *
*   Define size independent data types and operations.                         *
*                                                                              *
*   The following types must be supported by all platforms:                    *
*                                                                              *
*   UINT8  - Unsigned 8-bit Integer     INT8  - Signed 8-bit integer           *
*   UINT16 - Unsigned 16-bit Integer    INT16 - Signed 16-bit integer          *
*   UINT32 - Unsigned 32-bit Integer    INT32 - Signed 32-bit integer          *
*   UINT64 - Unsigned 64-bit Integer    INT64 - Signed 64-bit integer          *
*                                                                              *
*                                                                              *
*   The macro names for the artithmatic operations are composed as follows:    *
*                                                                              *
*   XXX_R_A_B, where XXX - 3 letter operation code (ADD, SUB, etc.)            *
*                    R   - The type of the result                              *
*                    A   - The type of operand 1                               *
*                    B   - The type of operand 2 (if binary operation)         *
*                                                                              *
*                    Each type is one of: U8,8,U16,16,U32,32,U64,64            *
*                                                                              *
*******************************************************************************/

#ifndef OSD_CPU_H
#define OSD_CPU_H

#include <stddef.h>

#if defined(__GNUC__)
#include <basetsd.h> /* from w32api */
typedef unsigned char       UINT8;
typedef unsigned short      UINT16;
typedef signed char         INT8;
typedef signed short        INT16;
#else
typedef unsigned char       UINT8;
typedef unsigned short      UINT16;
typedef unsigned int        UINT32;
typedef unsigned __int64    UINT64;
typedef signed char         INT8;
typedef signed short        INT16;
typedef signed int          INT32;
typedef signed __int64      INT64;
#endif

/* Combine to 32-bit integers into a 64-bit integer */
#define COMBINE_64_32_32(A,B)     ((((UINT64)(A))<<32) | (UINT32)(B))
#define COMBINE_U64_U32_U32(A,B)  COMBINE_64_32_32(A,B)

/* Return upper 32 bits of a 64-bit integer */
#define HI32_32_64(A)         (((UINT64)(A)) >> 32)
#define HI32_U32_U64(A)       HI32_32_64(A)

/* Return lower 32 bits of a 64-bit integer */
#define LO32_32_64(A)         ((A) & 0xffffffff)
#define LO32_U32_U64(A)       LO32_32_64(A)

#define DIV_64_64_32(A,B)     ((A)/(B))
#define DIV_U64_U64_U32(A,B)  ((A)/(UINT32)(B))

#define MOD_32_64_32(A,B)     ((A)%(B))
#define MOD_U32_U64_U32(A,B)  ((A)%(UINT32)(B))

#define MUL_64_32_32(A,B)     ((A)*(INT64)(B))
#define MUL_U64_U32_U32(A,B)  ((A)*(UINT64)(UINT32)(B))

/***************************** Common types ***********************************/

/******************************************************************************
 * Union of UINT8, UINT16 and UINT32 in native endianess of the target
 * This is used to access bytes and words in a machine independent manner.
 * The upper bytes h2 and h3 normally contain zero (16 bit CPU cores)
 * thus PAIR.d can be used to pass arguments to the memory system
 * which expects 'int' really.
 ******************************************************************************/
typedef union {
#ifdef LSB_FIRST
    struct { UINT8 l,h,h2,h3; } b;
    struct { UINT16 l,h; } w;
#else
    struct { UINT8 h3,h2,h,l; } b;
    struct { UINT16 h,l; } w;
#endif
    UINT32 d;
}   PAIR;

/* Turn off type mismatch warnings */
#ifndef __GNUC__
#pragma warning (disable:4244)
#pragma warning (disable:4761)
#pragma warning (disable:4018)
#pragma warning (disable:4146)
#pragma warning (disable:4068)
#pragma warning (disable:4005)
#pragma warning (disable:4305)
#endif

#endif  /* defined OSD_CPU_H */
