[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 | typedef struct __ldscript_symbol_s __ldscript_symbol_t; |
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| 13 | |
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| 14 | #define BASE_ADDR_OF(id) \ |
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| 15 | ({ \ |
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| 16 | extern __ldscript_symbol_t _dsx_##id##_region_begin; \ |
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| 17 | (void*)&_dsx_##id##_region_begin; \ |
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| 18 | }) |
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| 19 | |
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| 20 | |
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| 21 | /** |
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| 22 | Standard API call, expands to nothing for this implementation. |
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| 23 | */ |
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| 24 | #define srl_busy_cycles(n) do{}while(0) |
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| 25 | |
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| 26 | //void useless(void *pointless,...){} |
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| 27 | /** |
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| 28 | @this flushes the cache line containing the address. |
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| 29 | */ |
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| 30 | //TODO |
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| 31 | #define srl_dcache_flush_addr 0 |
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| 32 | |
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| 33 | /* |
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| 34 | static inline cpu_dcache_invld(void *ptr){ |
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| 35 | asm volatile ( |
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| 36 | " cache %0, %1" |
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| 37 | : : "i" (0x11) , "R" (*(uint8_t*)(ptr)) |
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| 38 | : "memory" |
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| 39 | ); |
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| 40 | } |
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| 41 | */ |
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| 42 | |
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| 43 | /** |
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| 44 | @this flushes a memory zone from cache. |
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| 45 | */ |
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| 46 | //TODO |
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| 47 | //void dcache_flush(const void * addr, size_t size) |
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| 48 | #define srl_dcache_flush_zone dcache_flush |
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| 49 | |
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| 50 | /** |
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| 51 | @this waits for at least the given time (in cycles). The actual |
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| 52 | time spent in this call is not predictable. |
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| 53 | |
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| 54 | @param time Number of cycles to wait for |
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| 55 | */ |
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| 56 | void srl_sleep_cycles( unsigned int time ); |
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| 57 | |
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| 58 | /** |
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| 59 | @this returns the absolute timestamp counter from the |
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| 60 | initialization of the platform. |
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| 61 | |
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| 62 | @return Cycles from the initialization of the system |
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| 63 | */ |
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| 64 | |
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| 65 | |
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| 66 | static inline unsigned int srl_cycle_count() |
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| 67 | { |
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| 68 | return proctime(); |
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| 69 | } |
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| 70 | |
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| 71 | /** |
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| 72 | @this aborts the current execution. On most systems, @this will |
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| 73 | simply hang. |
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| 74 | */ |
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| 75 | static inline void srl_abort() |
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| 76 | { |
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| 77 | asm volatile ("break 0"); |
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| 78 | while(1); |
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| 79 | } |
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| 80 | |
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| 81 | #endif |
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