* invalidate any other reasons why the executable file might be covered by
* the GNU General Public License.
*
- * Copyright 2004, 2005 Develer S.r.l. (http://www.develer.com/)
+ * Copyright 2004, 2005, 2006, 2007 Develer S.r.l. (http://www.develer.com/)
* Copyright 2004 Giovanni Bajo
*
* -->
* \author Giovanni Bajo <rasky@develer.com>
* \author Bernardo Innocenti <bernie@develer.com>
* \author Stefano Fedrigo <aleph@develer.com>
+ * \author Francesco Sacchi <batt@develer.com>
*/
-#ifndef DEVLIB_CPU_H
-#define DEVLIB_CPU_H
+#ifndef CPU_CPU_H
+#define CPU_CPU_H
+#include "detect.h"
#include <cfg/compiler.h> /* for uintXX_t */
#include <cfg/arch_config.h> /* ARCH_EMUL */
/*\}*/
/** Macro to include cpu-specific versions of the headers. */
-#define CPU_HEADER(module) PP_STRINGIZE(PP_CAT3(module, _, CPU_ID).h)
+#define CPU_HEADER(module) PP_STRINGIZE(drv/PP_CAT3(module, _, CPU_ID).h)
/** Macro to include cpu-specific versions of implementation files. */
-#define CPU_CSOURCE(module) PP_STRINGIZE(PP_CAT3(module, _, CPU_ID).c)
+#define CPU_CSOURCE(module) PP_STRINGIZE(drv/PP_CAT3(module, _, CPU_ID).c)
#if CPU_I196
/* Register counts include SREG too */
#define CPU_REG_BITS 32
#define CPU_REGS_CNT 16
- #define CPU_SAVED_REGS_CNT FIXME
+ #define CPU_SAVED_REGS_CNT 9
#define CPU_STACK_GROWS_UPWARD 0
#define CPU_SP_ON_EMPTY_SLOT 0
#define CPU_BYTE_ORDER (__BIG_ENDIAN__ ? CPU_BIG_ENDIAN : CPU_LITTLE_ENDIAN)
#define BREAKPOINT /* asm("bkpt 0") DOES NOT WORK */
#else /* !__IAR_SYSTEMS_ICC__ */
-
- #warning "IRQ_ macros need testing!"
- #warning "Test now or die :-)"
-
#define NOP asm volatile ("mov r0,r0" ::)
#define IRQ_DISABLE \
); \
} while (0)
- #define IRQ_GETSTATE() \
+ #define CPU_READ_FLAGS() \
({ \
- uint32_t sreg; \
+ cpuflags_t sreg; \
asm volatile ( \
"mrs %0, cpsr\n\t" \
: "=r" (sreg) \
: /* no inputs */ \
); \
- !((sreg & 0xc0) == 0xc0); \
+ sreg; \
})
+ #define IRQ_GETSTATE() (!((CPU_READ_FLAGS() & 0xc0) == 0xc0))
+
+ /**
+ * Initialization value for registers in stack frame.
+ * The register index is not directly corrispondent to CPU
+ * register numbers, but is related to how are pushed to
+ * stack (\see asm_switch_context).
+ * Index (CPU_SAVED_REGS_CNT - 1) is the CPSR register,
+ * the initial value is set to:
+ * - All flags (N, Z, C, V) set to 0.
+ * - IRQ and FIQ enabled.
+ * - ARM state.
+ * - CPU in Supervisor Mode (SVC).
+ */
+ #define CPU_REG_INIT_VALUE(reg) (reg == (CPU_SAVED_REGS_CNT - 1) ? 0x13 : 0)
+
#endif /* !__IAR_SYSTEMS_ICC_ */
#elif CPU_PPC
#endif /* !ARCH_EMUL */
#endif /* !CPU_IDLE */
-#endif /* DEVLIB_CPU_H */
+#endif /* CPU_CPU_H */