cyg_type.h

eCos/RedBoot for勤研ARM AnywhereII(4510) 含全部源代码

typedef   signed cyg_halcount16 cyg_count16  ;

typedef unsigned cyg_halcount32 cyg_ucount32 ;
typedef   signed cyg_halcount32 cyg_count32  ;

typedef unsigned cyg_halcount64 cyg_ucount64 ;
typedef   signed cyg_halcount64 cyg_count64  ;

// -------------------------------------------------------------------------
// Define a type to be used for atomic accesses. This type is guaranteed
// to be read or written in a single uninterruptible operation. This type
// is at least a single byte.

typedef volatile unsigned cyg_halatomic  cyg_atomic;
typedef volatile unsigned cyg_halatomic  CYG_ATOMIC;

// -------------------------------------------------------------------------
// Define types for access plain, on-the-metal memory or devices.

typedef cyg_uint32  CYG_WORD;
typedef cyg_uint8   CYG_BYTE;
typedef cyg_uint16  CYG_WORD16;
typedef cyg_uint32  CYG_WORD32;
typedef cyg_uint64  CYG_WORD64;

typedef cyg_haladdress  CYG_ADDRESS;
typedef cyg_haladdrword CYG_ADDRWORD;

// -------------------------------------------------------------------------
// Constructor ordering macros.  These are added as annotations to all
// static objects to order the constuctors appropriately.

#if defined(__cplusplus) && defined(__GNUC__) && \
    !defined(CYGBLD_ATTRIB_INIT_PRI)
# define CYGBLD_ATTRIB_INIT_PRI( _pri_ ) __attribute__((init_priority(_pri_)))
#elif !defined(CYGBLD_ATTRIB_INIT_PRI)
// FIXME: should maybe just bomb out if this is attempted anywhere else?
// Not sure
# define CYGBLD_ATTRIB_INIT_PRI( _pri_ )
#endif
    
// The following will be removed eventually as it doesn't allow the use of
// e.g. pri+5 format
#define CYG_INIT_PRIORITY( _pri_ ) CYGBLD_ATTRIB_INIT_PRI( CYG_INIT_##_pri_ )

#define CYGBLD_ATTRIB_INIT_BEFORE( _pri_ ) CYGBLD_ATTRIB_INIT_PRI(_pri_-100)
#define CYGBLD_ATTRIB_INIT_AFTER( _pri_ )  CYGBLD_ATTRIB_INIT_PRI(_pri_+100)

#define CYG_INIT_HAL                    10000
#define CYG_INIT_SCHEDULER              11000
#define CYG_INIT_INTERRUPTS             12000
#define CYG_INIT_DRIVERS                13000
#define CYG_INIT_CLOCK                  14000
#define CYG_INIT_IDLE_THREAD            15000
#define CYG_INIT_THREADS                16000
#define CYG_INIT_KERNEL                 40000
#define CYG_INIT_MEMALLOC               47000
#define CYG_INIT_IO                     49000
#define CYG_INIT_IO_FS                  50000
#define CYG_INIT_LIBC                   52000
#define CYG_INIT_COMPAT                 55000
#define CYG_INIT_APPLICATION            60000
#define CYG_INIT_PREDEFAULT             65534
#define CYG_INIT_DEFAULT                65535

// -------------------------------------------------------------------------
// Label name macros. Some toolsets generate labels with initial
// underscores and others don't. CYG_LABEL_NAME should be used on
// labels in C/C++ code that are defined in assembly code or linker
// scripts. CYG_LABEL_DEFN is for use in assembly code and linker
// scripts where we need to manufacture labels that can be used from
// C/C++.
// These are default implementations that should work for most targets.
// They may be overridden in basetype.h if necessary.

#ifndef CYG_LABEL_NAME

#define CYG_LABEL_NAME(_name_) _name_

#endif

#ifndef CYG_LABEL_DEFN

#define CYG_LABEL_DEFN(_label) _label

#endif

// -------------------------------------------------------------------------
// COMPILER-SPECIFIC STUFF

#ifdef __GNUC__
// Force a 'C' routine to be called like a 'C++' contructor
# if !defined(CYGBLD_ATTRIB_CONSTRUCTOR)
#  define CYGBLD_ATTRIB_CONSTRUCTOR __attribute__((constructor))
# endif

// Define a compiler-specific rune for saying a function doesn't return
# if !defined(CYGBLD_ATTRIB_NORET)
#  define CYGBLD_ATTRIB_NORET __attribute__((noreturn))
# endif

// How to define weak symbols - this is only relevant for ELF and a.out,
// but that won't be a problem for eCos
# if !defined(CYGBLD_ATTRIB_WEAK)
#  define CYGBLD_ATTRIB_WEAK __attribute__ ((weak))
# endif

// How to define alias to symbols. Just pass in the symbol itself, not
// the string name of the symbol
# if !defined(CYGBLD_ATTRIB_ALIAS)
#  define CYGBLD_ATTRIB_ALIAS(__symbol__) \
        __attribute__ ((alias (#__symbol__)))
# endif

// This effectively does the reverse of the previous macro. It defines
// a name that the attributed variable or function will actually have
// in assembler.
# if !defined(CYGBLD_ATTRIB_ASM_ALIAS)
#  define __Str(x) #x
#  define __Xstr(x) __Str(x)
#  define CYGBLD_ATTRIB_ASM_ALIAS(__symbol__) \
             __asm__ ( __Xstr( CYG_LABEL_DEFN( __symbol__ ) ) )
# endif

// Shows that a function returns the same value when given the same args, but
// note this can't be used if there are pointer args
# if !defined(CYGBLD_ATTRIB_CONST)
#  define CYGBLD_ATTRIB_CONST __attribute__((const))
#endif

// Assign a defined variable to a specific section
# if !defined(CYGBLD_ATTRIB_SECTION)
#  define CYGBLD_ATTRIB_SECTION(__sect__) __attribute__((section (__sect__)))
# endif

// Give a type or object explicit minimum alignment
# if !defined(CYGBLD_ATTRIB_ALIGN)
#  define CYGBLD_ATTRIB_ALIGN(__align__) __attribute__((aligned(__align__)))
# endif

# if !defined(CYGBLD_ATTRIB_ALIGN_MAX)
#  define CYGBLD_ATTRIB_ALIGN_MAX __attribute__((aligned))
# endif

# if !defined(CYGBLD_ATTRIB_ALIGNOFTYPE)
#  define CYGBLD_ATTRIB_ALIGNOFTYPE( _type_ ) \
     __attribute__((aligned(__alignof__( _type_ ))))
# endif

// Teach compiler how to check format of printf-like functions
# define CYGBLD_ATTRIB_PRINTF_FORMAT(__format__, __args__) \
        __attribute__((format (printf, __format__, __args__)))

#else // non-GNU

# define CYGBLD_ATTRIB_CONSTRUCTOR

# define CYGBLD_ATTRIB_NORET
    // This intentionally gives an error only if we actually try to
    // use it.  #error would give an error if we simply can't.
// FIXME: Had to disarm the bomb - the CYGBLD_ATTRIB_WEAK macro is now
//        (indirectly) used in host tools.
# define CYGBLD_ATTRIB_WEAK /* !!!-- Attribute weak not defined --!!! */

# define CYGBLD_ATTRIB_ALIAS(__x__) !!!-- Attribute alias not defined --!!!

# define CYGBLD_ATTRIB_ASM_ALIAS(__symbol__) !!!-- Asm alias not defined --!!!

# define CYGBLD_ATTRIB_CONST

# define CYGBLD_ATTRIB_ALIGN(__align__) !!!-- Alignment alias not defined --!!!

# define CYGBLD_ATTRIB_ALIGN_MAX !!!-- Alignment alias not defined --!!!

# define CYGBLD_ATTRIB_ALIGNOFTYPE( _type_ ) !!!-- Alignment alias not defined --!!!

# define CYGBLD_ATTRIB_PRINTF_FORMAT(__format__, __args__)

#endif

// How to define weak aliases. Currently this is simply a mixture of the
// above

# define CYGBLD_ATTRIB_WEAK_ALIAS(__symbol__) \
        CYGBLD_ATTRIB_WEAK CYGBLD_ATTRIB_ALIAS(__symbol__)

#ifdef __cplusplus
# define __THROW throw()
#else
# define __THROW
#endif

// -------------------------------------------------------------------------
// Variable annotations
// These annotations may be added to various static variables in the
// HAL and kernel to indicate which component they belong to. These
// are used by some targets to optimize memory placement of these
// variables.

#ifndef CYGBLD_ANNOTATE_VARIABLE_HAL
#define CYGBLD_ANNOTATE_VARIABLE_HAL
#endif
#ifndef CYGBLD_ANNOTATE_VARIABLE_SCHED
#define CYGBLD_ANNOTATE_VARIABLE_SCHED
#endif
#ifndef CYGBLD_ANNOTATE_VARIABLE_CLOCK
#define CYGBLD_ANNOTATE_VARIABLE_CLOCK
#endif
#ifndef CYGBLD_ANNOTATE_VARIABLE_INTR
#define CYGBLD_ANNOTATE_VARIABLE_INTR
#endif

// -------------------------------------------------------------------------
// Various "flavours" of memory regions that can be described by the 
// Memory Layout Tool (MLT).

#define CYGMEM_REGION_ATTR_R  0x01  // Region can be read
#define CYGMEM_REGION_ATTR_W  0x02  // Region can be written

// -------------------------------------------------------------------------
#endif // CYGONCE_INFRA_CYG_TYPE_H multiple inclusion protection
// EOF cyg_type.h