[160] | 1 | #ifndef SRL_HW_HELPERS_H |
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| 2 | #define SRL_HW_HELPERS_H |
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| 3 | |
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| 4 | /** |
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| 5 | * @file |
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| 6 | * @module{SRL} |
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| 7 | * @short Miscellaneous APIs |
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| 8 | */ |
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| 9 | |
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| 10 | #include "stdio.h" |
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| 11 | |
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| 12 | |
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| 13 | /** |
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| 14 | Standard API call, expands to nothing for this implementation. |
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| 15 | */ |
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| 16 | #define srl_busy_cycles(n) do{}while(0) |
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| 17 | |
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| 18 | //void useless(void *pointless,...){} |
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| 19 | /** |
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| 20 | @this flushes the cache line containing the address. |
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| 21 | */ |
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| 22 | //TODO |
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| 23 | #define srl_dcache_flush_addr 0 |
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| 24 | |
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| 25 | /* |
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| 26 | static inline cpu_dcache_invld(void *ptr){ |
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| 27 | asm volatile ( |
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| 28 | " cache %0, %1" |
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| 29 | : : "i" (0x11) , "R" (*(uint8_t*)(ptr)) |
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| 30 | : "memory" |
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| 31 | ); |
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| 32 | } |
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| 33 | */ |
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| 34 | |
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| 35 | /** |
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| 36 | @this flushes a memory zone from cache. |
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| 37 | */ |
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| 38 | //TODO |
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| 39 | //void dcache_flush(const void * addr, size_t size) |
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| 40 | #define srl_dcache_flush_zone dcache_flush |
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| 41 | |
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| 42 | /** |
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| 43 | @this waits for at least the given time (in cycles). The actual |
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| 44 | time spent in this call is not predictable. |
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| 45 | |
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| 46 | @param time Number of cycles to wait for |
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| 47 | */ |
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| 48 | void srl_sleep_cycles( unsigned int time ); |
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| 49 | |
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| 50 | /** |
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| 51 | @this returns the absolute timestamp counter from the |
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| 52 | initialization of the platform. |
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| 53 | |
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| 54 | @return Cycles from the initialization of the system |
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| 55 | */ |
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| 56 | static inline unsigned int srl_cycle_count() |
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| 57 | { |
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[175] | 58 | return giet_proctime(); |
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[160] | 59 | } |
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| 60 | |
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| 61 | /** |
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| 62 | @this aborts the current execution. On most systems, @this will |
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| 63 | simply hang. |
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| 64 | */ |
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| 65 | static inline void srl_abort() |
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| 66 | { |
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| 67 | asm volatile ("break 0"); |
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| 68 | while(1); |
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| 69 | } |
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| 70 | |
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[175] | 71 | /** |
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| 72 | * |
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| 73 | */ |
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| 74 | static inline void srl_exit() |
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| 75 | { |
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| 76 | giet_exit(); |
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| 77 | } |
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| 78 | |
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[160] | 79 | #endif |
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