*
* Copyright 2004, 2005, 2006, 2007, 2008 Develer S.r.l. (http://www.develer.com/)
* Copyright 2004 Giovanni Bajo
- *
* -->
*
* \brief CPU-specific attributes.
#include "detect.h"
+#include "cfg/cfg_proc.h" /* CONFIG_KERN_PREEMPT */
#include "cfg/cfg_attr.h" /* CONFIG_FAST_MEM */
#elif CPU_X86
- #define NOP asm volatile ("nop")
-
#define CPU_REGS_CNT 7
#define CPU_BYTE_ORDER CPU_LITTLE_ENDIAN
#define CPU_HARVARD 0
#endif
/// Valid pointers should be >= than this value (used for debug)
- #define CPU_RAM_START 0x1000
+ #define CPU_RAM_START 0x1000
+
+ #ifdef __GNUC__
+ #define NOP asm volatile ("nop")
+ /* This is a good thing to insert into busy-wait loops. */
+ #define PAUSE asm volatile ("rep; nop" ::: "memory")
+ #define BREAKPOINT asm volatile ("int3" ::)
+ #endif
#elif CPU_ARM
#define CPU_HARVARD 0
/// Valid pointers should be >= than this value (used for debug)
- #define CPU_RAM_START 0x200
+ #if CPU_ARM_AT91
+ #define CPU_RAM_START 0x00200000
+ #else
+ #warning Fix CPU_RAM_START address for your ARM, default value set to 0x200
+ #define CPU_RAM_START 0x200
+ #endif
#ifdef __IAR_SYSTEMS_ICC__
#warning Check CPU_BYTE_ORDER
#endif
#define NOP asm volatile ("mov r0,r0" ::)
+ #define BREAKPOINT /* asm("bkpt 0") DOES NOT WORK */
#if CONFIG_FAST_MEM
/**
#define FAST_FUNC /**/
#endif
- /**
- * Function attribute to declare an interrupt service routine.
+ /*
+ * Function attribute to move it into ram memory.
*/
- #define ISR_FUNC __attribute__((interrupt))
+ #define RAM_FUNC __attribute__((section(".data")))
#endif /* !__IAR_SYSTEMS_ICC_ */
#elif CPU_PPC
- #define NOP asm volatile ("nop" ::)
-
#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
/// Valid pointers should be >= than this value (used for debug)
- #define CPU_RAM_START 0x1000
+ #define CPU_RAM_START 0x1000
-#elif CPU_DSP56K
+ #ifdef __GNUC__
+ #define NOP asm volatile ("nop" ::)
+ #define BREAKPOINT asm volatile ("twge 2,2" ::)
+ #endif
- #define NOP asm(nop)
+#elif CPU_DSP56K
#define CPU_REG_BITS 16
#define CPU_REGS_CNT FIXME
#define SIZEOF_PTR 1
/// Valid pointers should be >= than this value (used for debug)
- #define CPU_RAM_START 0x200
+ #define CPU_RAM_START 0x200
+
+ #define NOP asm(nop)
+ #define BREAKPOINT asm(debug)
#elif CPU_AVR
#define CPU_HARVARD 1
/// Valid pointers should be >= than this value (used for debug)
- #define CPU_RAM_START 0x100
+ #if CPU_AVR_ATMEGA8 || CPU_AVR_ATMEGA32 || CPU_AVR_ATMEGA103
+ #define CPU_RAM_START 0x60
+ #elif CPU_AVR_ATMEGA64 || CPU_AVR_ATMEGA128 || CPU_AVR_ATMEGA168
+ #define CPU_RAM_START 0x100
+ #elif CPU_AVR_ATMEGA1281
+ #define CPU_RAM_START 0x200
+ #else
+ #warning Fix CPU_RAM_START address for your AVR, default value set to 0x100
+ #define CPU_RAM_START 0x100
+ #endif
#else
#error No CPU_... defined.
#endif
+#ifndef BREAKPOINT
+#define BREAKPOINT /* nop */
+#endif
+
#ifndef FAST_FUNC
/// Function attribute for use with performance critical code.
#define FAST_FUNC /* */
#define FAST_RODATA /* */
#endif
+#ifndef PAUSE
+ /// Generic PAUSE implementation.
+ #define PAUSE {NOP; MEMORY_BARRIER;}
+#endif
+
#endif /* CPU_ATTR_H */