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| Rev | Author | Line No. | Line |
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| 352 | giacomo | 1 | /* |
| 2 | * Project: S.Ha.R.K. |
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| 3 | * |
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| 4 | * Coordinators: |
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| 5 | * Giorgio Buttazzo <giorgio@sssup.it> |
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| 6 | * Paolo Gai <pj@gandalf.sssup.it> |
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| 7 | * |
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| 8 | * Authors : |
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| 9 | * Giacomo Guidi <giacomo@gandalf.sssup.it> |
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| 10 | * |
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| 11 | * ReTiS Lab (Scuola Superiore S.Anna - Pisa - Italy) |
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| 12 | * |
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| 13 | * http://www.sssup.it |
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| 14 | * http://retis.sssup.it |
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| 15 | * http://shark.sssup.it |
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| 16 | */ |
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| 17 | |||
| 18 | #ifndef __TRACER_H__ |
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| 19 | #define __TRACER_H__ |
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| 20 | |||
| 21 | #ifdef __OLD_TRACER__ |
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| 22 | |||
| 23 | #include <ll/sys/types.h> |
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| 24 | #include "types.h" |
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| 25 | #include "trace.h" |
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| 355 | giacomo | 26 | #include "FTrace.h" |
| 352 | giacomo | 27 | |
| 28 | #define TRACER_LOGEVENT oldtrace |
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| 29 | |||
| 30 | extern int (*trc_register_eventclass) |
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| 31 | (int class,int num,int(*func)(trc_event_t *, int event, void *ptr)); |
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| 32 | |||
| 33 | extern void (*trc_logevent)(int event, void *ptr); |
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| 34 | |||
| 35 | extern int (*trc_resume)(void); |
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| 36 | extern int (*trc_suspend)(void); |
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| 37 | |||
| 38 | #define NOT_DEFINED 0xFF |
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| 39 | |||
| 40 | extern __inline__ void oldtrace(BYTE type, BYTE flag, DWORD par1, DWORD par2) |
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| 41 | { |
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| 42 | |||
| 43 | static int oldtype; |
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| 44 | static int oldpar; |
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| 45 | extern BYTE conv[256]; // Conversion table: ctable.c |
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| 46 | BYTE ttype = 0; |
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| 47 | |||
| 48 | ttype = type & 0x0F; |
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| 49 | type = type >> 4; |
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| 50 | type |= (ttype << 4); |
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| 51 | |||
| 52 | oldtype = conv[type]; |
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| 53 | |||
| 54 | if (oldtype != NOT_DEFINED) trc_logevent(oldtype,&oldpar); |
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| 55 | |||
| 56 | } |
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| 57 | |||
| 58 | |||
| 59 | #else |
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| 60 | #ifdef __NEW_TRACER__ |
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| 61 | |||
| 62 | #include <ll/sys/types.h> |
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| 63 | #include <ll/i386/hw-instr.h> |
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| 64 | #include "FTrace.h" |
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| 65 | |||
| 66 | #define TRACER_LOGEVENT fast_logevent |
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| 67 | |||
| 362 | giacomo | 68 | int tracer_initialize(int OutputType, int MemorySize); |
| 69 | void tracer_enable(); |
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| 70 | void tracer_disable(); |
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| 71 | void tracer_print_statistics(); |
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| 72 | |||
| 352 | giacomo | 73 | #define TRACER_SERIALIZE |
| 74 | |||
| 75 | /* Save bytes => 1(type) + 4(tsc_high) + 4(tsc_low) + 1(size) |
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| 76 | if (flag & 1) + 4(par1) |
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| 77 | if (flag & 3) + 4(par2) |
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| 78 | * Return 0 -> Success |
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| 79 | * Return 1 -> Inactive |
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| 80 | * Return 2 -> Error |
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| 81 | */ |
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| 82 | extern __inline__ int fast_logevent(BYTE type, BYTE flag, DWORD par1, DWORD par2) |
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| 83 | { |
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| 84 | |||
| 85 | extern void *StartTracerBuffer; |
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| 86 | extern void *EndTracerBuffer; |
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| 362 | giacomo | 87 | extern void *LastBeforeEndTracerBuffer; |
| 352 | giacomo | 88 | extern void *CurrentTracerBuffer; |
| 362 | giacomo | 89 | extern void *FirstTracerBuffer; |
| 90 | |||
| 352 | giacomo | 91 | extern int TracerActive; |
| 92 | extern unsigned long long TracerEventsRecorded; |
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| 93 | |||
| 94 | SYS_FLAGS f; |
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| 95 | |||
| 96 | DWORD tsc_low, tsc_high; |
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| 97 | BYTE size = 10; |
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| 98 | |||
| 99 | f = ll_fsave(); |
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| 100 | |||
| 101 | if (!TracerActive) { |
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| 102 | ll_frestore(f); |
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| 103 | return 1; |
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| 104 | } |
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| 105 | |||
| 106 | #ifdef TRACER_SERIALIZE |
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| 107 | __asm__("xorl %%eax,%%eax\n\t" |
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| 108 | "cpuid\n\t" |
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| 109 | "rdtsc\n\t" |
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| 110 | :"=a" (tsc_low), "=d" (tsc_high) |
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| 111 | : |
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| 112 | :"ebx","ecx"); |
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| 113 | #else |
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| 114 | __asm__("rdtsc\n\t" |
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| 115 | :"=a" (tsc_low), "=d" (tsc_high) |
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| 116 | ::); |
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| 117 | #endif |
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| 118 | |||
| 119 | if (flag & 1) size += 4; |
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| 120 | if (flag & 3) size += 4; |
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| 121 | |||
| 362 | giacomo | 122 | // Adjust FirstTracerBuffer |
| 123 | if (FirstTracerBuffer != StartTracerBuffer) { |
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| 363 | giacomo | 124 | while ((CurrentTracerBuffer + size - 1) >= FirstTracerBuffer && |
| 125 | FirstTracerBuffer != StartTracerBuffer) { |
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| 362 | giacomo | 126 | FirstTracerBuffer += *(BYTE *)(FirstTracerBuffer + 9); |
| 363 | giacomo | 127 | if (FirstTracerBuffer >= LastBeforeEndTracerBuffer) FirstTracerBuffer = StartTracerBuffer; |
| 362 | giacomo | 128 | } |
| 129 | } |
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| 130 | |||
| 131 | // Check if we overcome EndTracerBuffer |
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| 352 | giacomo | 132 | if ((CurrentTracerBuffer + size - 1) > EndTracerBuffer) { |
| 133 | //Cyclical Buffer implementation |
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| 362 | giacomo | 134 | LastBeforeEndTracerBuffer = CurrentTracerBuffer; |
| 352 | giacomo | 135 | CurrentTracerBuffer = StartTracerBuffer; |
| 362 | giacomo | 136 | //Set the First Event |
| 363 | giacomo | 137 | while ((CurrentTracerBuffer + size - 1) >= FirstTracerBuffer) { |
| 138 | FirstTracerBuffer += *(BYTE *)(FirstTracerBuffer + 9); |
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| 139 | if (FirstTracerBuffer >= LastBeforeEndTracerBuffer) FirstTracerBuffer = StartTracerBuffer; |
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| 140 | } |
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| 352 | giacomo | 141 | } |
| 142 | |||
| 362 | giacomo | 143 | // Add the new event |
| 352 | giacomo | 144 | *(BYTE *)CurrentTracerBuffer = type; |
| 145 | CurrentTracerBuffer++; |
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| 146 | *(DWORD *)(CurrentTracerBuffer) = tsc_high; |
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| 147 | CurrentTracerBuffer+=4; |
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| 148 | *(DWORD *)(CurrentTracerBuffer) = tsc_low; |
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| 149 | CurrentTracerBuffer+=4; |
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| 150 | *(BYTE *)(CurrentTracerBuffer) = size; |
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| 151 | CurrentTracerBuffer++; |
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| 152 | if (flag & 1) { |
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| 153 | *(DWORD *)(CurrentTracerBuffer) = par1; |
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| 154 | CurrentTracerBuffer+=4; |
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| 155 | } |
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| 156 | if (flag & 3) { |
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| 157 | *(DWORD *)(CurrentTracerBuffer) = par2; |
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| 158 | CurrentTracerBuffer+=4; |
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| 159 | } |
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| 160 | |||
| 161 | if (CurrentTracerBuffer > EndTracerBuffer) { |
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| 162 | ll_frestore(f); |
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| 163 | return 2; |
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| 164 | } |
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| 165 | |||
| 166 | TracerEventsRecorded++; |
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| 167 | |||
| 168 | ll_frestore(f); |
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| 169 | return 0; |
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| 170 | |||
| 171 | } |
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| 172 | |||
| 173 | #else |
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| 174 | |||
| 175 | #define TRACER_LOGEVENT(a,b,c,d) |
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| 176 | |||
| 177 | #endif |
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| 178 | |||
| 179 | #endif |
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| 180 | |||
| 181 | #endif |