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/*
* Project: S.Ha.R.K.
*
* Coordinators:
* Giorgio Buttazzo <giorgio@sssup.it>
* Paolo Gai <pj@gandalf.sssup.it>
*
* Authors :
* Giacomo Guidi <giacomo@gandalf.sssup.it>
*
* ReTiS Lab (Scuola Superiore S.Anna - Pisa - Italy)
*
* http://www.sssup.it
* http://retis.sssup.it
* http://shark.sssup.it
*/
#ifndef __TRACER_H__
#define __TRACER_H__
#ifdef __OLD_TRACER__
#include <ll/sys/types.h>
#include "types.h"
#include "trace.h"
#include "FTrace.h"
#define TRACER_LOGEVENT oldtrace
extern int (*trc_register_eventclass)
(int class,int num,int(*func)(trc_event_t *, int event, void *ptr));
extern void (*trc_logevent)(int event, void *ptr);
extern int (*trc_resume)(void);
extern int (*trc_suspend)(void);
#define NOT_DEFINED 0xFF
extern __inline__ void oldtrace(BYTE type, BYTE flag, DWORD par1, DWORD par2)
{
static int oldtype;
static int oldpar;
extern BYTE conv[256]; // Conversion table: ctable.c
BYTE ttype = 0;
ttype = type & 0x0F;
type = type >> 4;
type |= (ttype << 4);
oldtype = conv[type];
if (oldtype != NOT_DEFINED) trc_logevent(oldtype,&oldpar);
}
#else
#ifdef __NEW_TRACER__
#include <ll/sys/types.h>
#include <ll/i386/hw-instr.h>
#include "FTrace.h"
#define TRACER_NO_OUTPUT 0
#define TRACER_UDP_OUTPUT 1
#define TRACER_LOGEVENT fast_logevent
int tracer_initialize(int MemorySize);
void tracer_enable();
void tracer_disable();
void tracer_print_statistics();
//UDP
int init_udp_tracer(char *local_ip, char *target_ip);
#define TRACER_SERIALIZE
/* Save bytes => 1(type) + 4(tsc_high) + 4(tsc_low) + 1(size)
if (flag & 1) + 4(par1)
if (flag & 3) + 4(par2)
* Return 0 -> Success
* Return 1 -> Inactive
* Return 2 -> Error
*/
extern __inline__ int fast_logevent(BYTE type, BYTE flag, DWORD par1, DWORD par2)
{
extern void *StartTracerBuffer;
extern void *EndTracerBuffer;
extern void *LastBeforeEndTracerBuffer;
extern void *CurrentTracerBuffer;
extern void *FirstTracerBuffer;
extern int TracerActive;
extern unsigned long long TracerEventsRecorded;
extern unsigned int TracerEventsSaved;
SYS_FLAGS f;
DWORD tsc_low, tsc_high;
BYTE size = 10;
f = ll_fsave();
if (!TracerActive) {
ll_frestore(f);
return 1;
}
#ifdef TRACER_SERIALIZE
__asm__("xorl %%eax,%%eax\n\t"
"cpuid\n\t"
"rdtsc\n\t"
:"=a" (tsc_low), "=d" (tsc_high)
:
:"ebx","ecx");
#else
__asm__("rdtsc\n\t"
:"=a" (tsc_low), "=d" (tsc_high)
::);
#endif
if (flag & 1) size += 4;
if (flag & 3) size += 4;
// Adjust FirstTracerBuffer
if (FirstTracerBuffer >= CurrentTracerBuffer && TracerEventsSaved != 0) {
while ((CurrentTracerBuffer + size - 1) >= FirstTracerBuffer &&
FirstTracerBuffer != StartTracerBuffer) {
FirstTracerBuffer += *(BYTE *)(FirstTracerBuffer + 9);
if (FirstTracerBuffer >= LastBeforeEndTracerBuffer) FirstTracerBuffer = StartTracerBuffer;
}
} else {
TracerEventsSaved++;
}
// Check if we overcome EndTracerBuffer
if ((CurrentTracerBuffer + size - 1) > EndTracerBuffer) {
//Cyclical Buffer implementation
LastBeforeEndTracerBuffer = CurrentTracerBuffer;
CurrentTracerBuffer = StartTracerBuffer;
//Set the First Event
while ((CurrentTracerBuffer + size - 1) >= FirstTracerBuffer) {
FirstTracerBuffer += *(BYTE *)(FirstTracerBuffer + 9);
if (FirstTracerBuffer >= LastBeforeEndTracerBuffer) FirstTracerBuffer = StartTracerBuffer;
}
}
// Add the new event
*(BYTE *)CurrentTracerBuffer = type;
CurrentTracerBuffer++;
*(DWORD *)(CurrentTracerBuffer) = tsc_high;
CurrentTracerBuffer+=4;
*(DWORD *)(CurrentTracerBuffer) = tsc_low;
CurrentTracerBuffer+=4;
*(BYTE *)(CurrentTracerBuffer) = size;
CurrentTracerBuffer++;
if (flag & 1) {
*(DWORD *)(CurrentTracerBuffer) = par1;
CurrentTracerBuffer+=4;
}
if (flag & 3) {
*(DWORD *)(CurrentTracerBuffer) = par2;
CurrentTracerBuffer+=4;
}
if (CurrentTracerBuffer > EndTracerBuffer) {
ll_frestore(f);
return 2;
}
TracerEventsRecorded++;
ll_frestore(f);
return 0;
}
#else
#define TRACER_LOGEVENT(a,b,c,d)
#endif
#endif
#endif