#include <cfg/compiler.h> /* for uintXX_t */
#include <cfg/arch_config.h> /* ARCH_EMUL */
+#include "appconfig.h" // CONFIG_FAST_MEM
/**
* \name Macros for determining CPU endianness.
#define CPU_SAVED_REGS_CNT 9
#define CPU_STACK_GROWS_UPWARD 0
#define CPU_SP_ON_EMPTY_SLOT 0
- #warning Find a way to detect endianess at runtime
- #define CPU_BYTE_ORDER CPU_LITTLE_ENDIAN
#define CPU_HARVARD 0
+ /*
+ * Force compiler to realod context variable.
+ */
+ #define CPU_MEMORY_BARRIER asm volatile ("" : : : "memory")
#ifdef __IAR_SYSTEMS_ICC__
- #define NOP __no_operation()
- #else /* !__IAR_SYSTEMS_ICC__ */
- #define NOP asm volatile ("mov r0,r0" ::)
+ #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" ::)
/**
* Initialization value for registers in stack frame.
*/
#define CPU_REG_INIT_VALUE(reg) (reg == (CPU_SAVED_REGS_CNT - 1) ? 0x13 : 0)
+ #if CONFIG_FAST_MEM
+ /**
+ * Function attribute for use with performance critical code.
+ *
+ * On the AT91 family, code residing in flash has wait states.
+ * Moving functions to the data section is a quick & dirty way
+ * to get them transparently copied to SRAM for zero-wait-state
+ * operation.
+ */
+ #define FAST_FUNC __attribute__((section(".data")))
+
+ /**
+ * Data attribute to move constant data to fast memory storage.
+ *
+ * \see FAST_FUNC
+ */
+ #define FAST_RODATA __attribute__((section(".data")))
+
+ #else // !CONFIG_FAST_MEM
+ #define FAST_RODATA /**/
+ #define FAST_FUNC /**/
+ #endif
+
+ /**
+ * Function attribute to declare an interrupt service routine.
+ */
+ #define ISR_FUNC __attribute__((interrupt))
+
#endif /* !__IAR_SYSTEMS_ICC_ */
#elif CPU_PPC
} while (0)
/*
- * If the kernel is in idle-spinning, the processor execute:
- *
+ * If the kernel is in idle-spinning, the processor executes:
+ *
* IRQ_ENABLE;
* CPU_IDLE;
* IRQ_DISABLE;