attr.h

Go to the documentation of this file.

#ifndef CPU_ATTR_H
#define CPU_ATTR_H

#include "detect.h"

#include "cfg/cfg_attr.h"      /* CONFIG_FAST_MEM */


#define CPU_BIG_ENDIAN    0x1234
#define CPU_LITTLE_ENDIAN 0x3412 /* Look twice, pal. This is not a bug. */
/*\}*/

#define CPU_HEADER(module)          PP_STRINGIZE(drv/PP_CAT3(module, _, CPU_ID).h)

#define CPU_CSOURCE(module)         PP_STRINGIZE(drv/PP_CAT3(module, _, CPU_ID).c)


#if CPU_I196

    #define NOP                     nop_instruction()

    #define CPU_REG_BITS            16
    #define CPU_REGS_CNT            16
    #define CPU_BYTE_ORDER          CPU_LITTLE_ENDIAN
    #define CPU_HARVARD             0

    #define CPU_RAM_START       0x100

#elif CPU_X86

    #define CPU_REGS_CNT            7
    #define CPU_BYTE_ORDER          CPU_LITTLE_ENDIAN
    #define CPU_HARVARD             0

    #if CPU_X86_64
        #define CPU_REG_BITS    64

        #ifdef __WIN64__
            /* WIN64 is an IL32-P64 weirdo. */
            #define SIZEOF_LONG  4
        #endif
    #else
        #define CPU_REG_BITS    32
    #endif

    #define CPU_RAM_START      0x1000

    #ifdef __GNUC__
        #define NOP         asm volatile ("nop")
        #define BREAKPOINT  asm volatile ("int3" ::)
    #endif

#elif CPU_ARM

    #define CPU_REG_BITS           32
    #define CPU_REGS_CNT           16
    #define CPU_HARVARD            0

    #define CPU_RAM_START       0x200

    #ifdef __IAR_SYSTEMS_ICC__
        #warning Check CPU_BYTE_ORDER
        #define CPU_BYTE_ORDER (__BIG_ENDIAN__ ? CPU_BIG_ENDIAN : CPU_LITTLE_ENDIAN)

        #define NOP            __no_operation()

    #else /* GCC and compatibles */

        #if defined(__ARMEB__)
            #define CPU_BYTE_ORDER CPU_BIG_ENDIAN
        #elif defined(__ARMEL__)
            #define CPU_BYTE_ORDER CPU_LITTLE_ENDIAN
        #else
            #error Unable to detect ARM endianness!
        #endif

        #define NOP            asm volatile ("mov r0,r0" ::)
        #define BREAKPOINT  /* asm("bkpt 0") DOES NOT WORK */

        #if CONFIG_FAST_MEM

            #define FAST_FUNC __attribute__((section(".data")))

            #define FAST_RODATA __attribute__((section(".data")))

        #else // !CONFIG_FAST_MEM
            #define FAST_RODATA 
            #define FAST_FUNC 
        #endif

        #define ISR_FUNC __attribute__((interrupt))

    #endif /* !__IAR_SYSTEMS_ICC_ */

#elif CPU_PPC

    #define CPU_REG_BITS           (CPU_PPC32 ? 32 : 64)
    #define CPU_REGS_CNT           FIXME
    #define CPU_BYTE_ORDER         (__BIG_ENDIAN__ ? CPU_BIG_ENDIAN : CPU_LITTLE_ENDIAN)
    #define CPU_HARVARD            0

    #define CPU_RAM_START          0x1000

    #ifdef __GNUC__
        #define NOP         asm volatile ("nop" ::)
        #define BREAKPOINT  asm volatile ("twge 2,2" ::)
    #endif

#elif CPU_DSP56K

    #define CPU_REG_BITS            16
    #define CPU_REGS_CNT            FIXME
    #define CPU_BYTE_ORDER          CPU_BIG_ENDIAN
    #define CPU_HARVARD     1

    /* Memory is word-addessed in the DSP56K */
    #define CPU_BITS_PER_CHAR  16
    #define SIZEOF_SHORT        1
    #define SIZEOF_INT          1
    #define SIZEOF_LONG         2
    #define SIZEOF_PTR          1

    #define CPU_RAM_START       0x200

    #define NOP                     asm(nop)
    #define BREAKPOINT              asm(debug)

#elif CPU_AVR

    #define NOP                     asm volatile ("nop" ::)

    #define CPU_REG_BITS            8
    #define CPU_REGS_CNT           33 /* Includes SREG */
    #define CPU_BYTE_ORDER          CPU_LITTLE_ENDIAN
    #define CPU_HARVARD             1

    #define CPU_RAM_START       0x100

#else
    #error No CPU_... defined.
#endif

#ifndef BREAKPOINT
#define BREAKPOINT /* nop */
#endif

#ifndef FAST_FUNC
    #define FAST_FUNC /* */
#endif

#ifndef FAST_RODATA
    #define FAST_RODATA /* */
#endif

#endif /* CPU_ATTR_H */