+++ /dev/null
-/*
- * xtruntime.h -- general C definitions for single-threaded run-time
- *
- * Copyright (c) 2002-2006 by Tensilica Inc. ALL RIGHTS RESERVED.
- * These coded instructions, statements, and computer programs are the
- * copyrighted works and confidential proprietary information of Tensilica Inc.
- * They may not be modified, copied, reproduced, distributed, or disclosed to
- * third parties in any manner, medium, or form, in whole or in part, without
- * the prior written consent of Tensilica Inc.
- */
-
-#ifndef XTRUNTIME_H
-#define XTRUNTIME_H
-
-#include <xtensa/config/core.h>
-#include <xtensa/config/specreg.h>
-
-#ifndef XTSTR
-#define _XTSTR(x) # x
-#define XTSTR(x) _XTSTR(x)
-#endif
-
-#define _xtos_set_execption_handler _xtos_set_exception_handler /* backward compatibility */
-#define _xtos_set_saved_intenable _xtos_ints_on /* backward compatibility */
-#define _xtos_clear_saved_intenable _xtos_ints_off /* backward compatibility */
-
-#if !defined(_ASMLANGUAGE) && !defined(__ASSEMBLER__)
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/*typedef void (_xtos_timerdelta_func)(int);*/
-#ifdef __cplusplus
-typedef void (_xtos_handler_func)(...);
-#else
-typedef void (_xtos_handler_func)();
-#endif
-typedef _xtos_handler_func *_xtos_handler;
-
-/*
- * unsigned XTOS_SET_INTLEVEL(int intlevel);
- * This macro sets the current interrupt level.
- * The 'intlevel' parameter must be a constant.
- * This macro returns a 32-bit value that must be passed to
- * XTOS_RESTORE_INTLEVEL() to restore the previous interrupt level.
- * XTOS_RESTORE_JUST_INTLEVEL() also does this, but in XEA2 configs
- * it restores only PS.INTLEVEL rather than the entire PS register
- * and thus is slower.
- */
-#if !XCHAL_HAVE_INTERRUPTS
-# define XTOS_SET_INTLEVEL(intlevel)
-# define XTOS_SET_MIN_INTLEVEL(intlevel)
-# define XTOS_RESTORE_INTLEVEL(restoreval)
-# define XTOS_RESTORE_JUST_INTLEVEL(restoreval)
-#elif XCHAL_HAVE_XEA2
-/* In XEA2, we can simply safely set PS.INTLEVEL directly: */
-/* NOTE: these asm macros don't modify memory, but they are marked
- * as such to act as memory access barriers to the compiler because
- * these macros are sometimes used to delineate critical sections;
- * function calls are natural barriers (the compiler does not know
- * whether a function modifies memory) unless declared to be inlined. */
-# define XTOS_SET_INTLEVEL(intlevel) ({ unsigned __tmp; \
- __asm__ __volatile__( "rsil %0, " XTSTR(intlevel) "\n" \
- : "=a" (__tmp) : : "memory" ); \
- __tmp;})
-# define XTOS_SET_MIN_INTLEVEL(intlevel) ({ unsigned __tmp, __tmp2, __tmp3; \
- __asm__ __volatile__( "rsr %0, " XTSTR(PS) "\n" /* get old (current) PS.INTLEVEL */ \
- "movi %2, " XTSTR(intlevel) "\n" \
- "extui %1, %0, 0, 4\n" /* keep only INTLEVEL bits of parameter */ \
- "blt %2, %1, 1f\n" \
- "rsil %0, " XTSTR(intlevel) "\n" \
- "1:\n" \
- : "=a" (__tmp), "=&a" (__tmp2), "=&a" (__tmp3) : : "memory" ); \
- __tmp;})
-# define XTOS_RESTORE_INTLEVEL(restoreval) do{ unsigned __tmp = (restoreval); \
- __asm__ __volatile__( "wsr %0, " XTSTR(PS) " ; rsync\n" \
- : : "a" (__tmp) : "memory" ); \
- }while(0)
-# define XTOS_RESTORE_JUST_INTLEVEL(restoreval) _xtos_set_intlevel(restoreval)
-#else
-/* In XEA1, we have to rely on INTENABLE register virtualization: */
-extern unsigned _xtos_set_vpri( unsigned vpri );
-extern unsigned _xtos_vpri_enabled; /* current virtual priority */
-# define XTOS_SET_INTLEVEL(intlevel) _xtos_set_vpri(~XCHAL_INTLEVEL_ANDBELOW_MASK(intlevel))
-# define XTOS_SET_MIN_INTLEVEL(intlevel) _xtos_set_vpri(_xtos_vpri_enabled & ~XCHAL_INTLEVEL_ANDBELOW_MASK(intlevel))
-# define XTOS_RESTORE_INTLEVEL(restoreval) _xtos_set_vpri(restoreval)
-# define XTOS_RESTORE_JUST_INTLEVEL(restoreval) _xtos_set_vpri(restoreval)
-#endif
-
-/*
- * The following macros build upon the above. They are generally used
- * instead of invoking the SET_INTLEVEL and SET_MIN_INTLEVEL macros directly.
- * They all return a value that can be used with XTOS_RESTORE_INTLEVEL()
- * or _xtos_restore_intlevel() or _xtos_restore_just_intlevel() to restore
- * the effective interrupt level to what it was before the macro was invoked.
- * In XEA2, the DISABLE macros are much faster than the MASK macros
- * (in all configs, DISABLE sets the effective interrupt level, whereas MASK
- * makes ensures the effective interrupt level is at least the level given
- * without lowering it; in XEA2 with INTENABLE virtualization, these macros
- * affect PS.INTLEVEL only, not the virtual priority, so DISABLE has partial
- * MASK semantics).
- *
- * A typical critical section sequence might be:
- * unsigned rval = XTOS_DISABLE_EXCM_INTERRUPTS;
- * ... critical section ...
- * XTOS_RESTORE_INTLEVEL(rval);
- */
-/* Enable all interrupts (those activated with _xtos_ints_on()): */
-#define XTOS_ENABLE_INTERRUPTS XTOS_SET_INTLEVEL(0)
-/* Disable low priority level interrupts (they can interact with the OS): */
-#define XTOS_DISABLE_LOWPRI_INTERRUPTS XTOS_SET_INTLEVEL(XCHAL_NUM_LOWPRI_LEVELS)
-#define XTOS_MASK_LOWPRI_INTERRUPTS XTOS_SET_MIN_INTLEVEL(XCHAL_NUM_LOWPRI_LEVELS)
-/* Disable interrupts that can interact with the OS: */
-#define XTOS_DISABLE_EXCM_INTERRUPTS XTOS_SET_INTLEVEL(XCHAL_EXCM_LEVEL)
-#define XTOS_MASK_EXCM_INTERRUPTS XTOS_SET_MIN_INTLEVEL(XCHAL_EXCM_LEVEL)
-#if 0 /* XTOS_LOCK_LEVEL is not exported to applications */
-/* Disable interrupts that can interact with the OS, or manipulate virtual INTENABLE: */
-#define XTOS_DISABLE_LOCK_INTERRUPTS XTOS_SET_INTLEVEL(XTOS_LOCK_LEVEL)
-#define XTOS_MASK_LOCK_INTERRUPTS XTOS_SET_MIN_INTLEVEL(XTOS_LOCK_LEVEL)
-#endif
-/* Disable ALL interrupts (not for common use, particularly if one's processor
- * configuration has high-level interrupts and one cares about their latency): */
-#define XTOS_DISABLE_ALL_INTERRUPTS XTOS_SET_INTLEVEL(15)
-
-
-extern unsigned int _xtos_ints_off( unsigned int mask );
-extern unsigned int _xtos_ints_on( unsigned int mask );
-extern unsigned _xtos_set_intlevel( int intlevel );
-extern unsigned _xtos_set_min_intlevel( int intlevel );
-extern unsigned _xtos_restore_intlevel( unsigned restoreval );
-extern unsigned _xtos_restore_just_intlevel( unsigned restoreval );
-extern _xtos_handler _xtos_set_interrupt_handler( int n, _xtos_handler f );
-extern _xtos_handler _xtos_set_interrupt_handler_arg( int n, _xtos_handler f, void *arg );
-extern _xtos_handler _xtos_set_exception_handler( int n, _xtos_handler f );
-
-extern void _xtos_memep_initrams( void );
-extern void _xtos_memep_enable( int flags );
-
-/* Deprecated (but kept because they were documented): */
-extern unsigned int _xtos_read_ints( void ); /* use xthal_get_interrupt() instead */
-extern void _xtos_clear_ints( unsigned int mask ); /* use xthal_set_intclear() instead */
-
-#if XCHAL_NUM_CONTEXTS > 1
-extern unsigned _xtos_init_context(int context_num, int stack_size,
- _xtos_handler_func *start_func, int arg1);
-#endif
-
-/* Deprecated: */
-#if XCHAL_NUM_TIMERS > 0
-extern void _xtos_timer_0_delta( int cycles );
-#endif
-#if XCHAL_NUM_TIMERS > 1
-extern void _xtos_timer_1_delta( int cycles );
-#endif
-#if XCHAL_NUM_TIMERS > 2
-extern void _xtos_timer_2_delta( int cycles );
-#endif
-#if XCHAL_NUM_TIMERS > 3
-extern void _xtos_timer_3_delta( int cycles );
-#endif
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* !_ASMLANGUAGE && !__ASSEMBLER__ */
-
-#endif /* XTRUNTIME_H */
projects / open-ath9k-htc-firmware.git / blobdiff