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add cache miss analysis debug toy

This commit is contained in:
zeromus 2010-10-26 22:54:30 +00:00
parent f841376e58
commit 834bc40a56
3 changed files with 25 additions and 2 deletions
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9
desmume/src/MMU_timing.h
View File

@ -29,6 +29,7 @@
#include "MMU.h"
#include "cp15.h"
#include "readwrite.h"
#include "debug.h"
#include "NDSSystem.h"
////////////////////////////////////////////////////////////////
@ -318,6 +319,14 @@ FORCEINLINE u32 _MMU_accesstime(u32 addr, bool sequential)
// by reading 32 bytes...
c += 8 * M32*2;
}
if(CheckDebugEvent(DEBUG_EVENT_CACHE_MISS))
{
DebugEventData.addr = addr;
DebugEventData.size = READSIZE;
HandleDebugEvent(DEBUG_EVENT_CACHE_MISS);
}
return c;
#elif defined(ACCOUNT_FOR_NON_SEQUENTIAL_ACCESS)
// this is the closest approximation I could find

11
desmume/src/debug.cpp
View File

@ -43,6 +43,7 @@ u32 debugFlag;
//DEBUG CONFIGURATION
const bool debug_acl = false;
const bool debug_cacheMiss = false;
static bool acl_check_access(u32 adr, u32 access) {
@ -102,6 +103,16 @@ void HandleDebugEvent_Execute()
acl_check_access(DebugEventData.addr,CP15_ACCESS_EXECUTE);
}
void HandleDebugEvent_CacheMiss()
{
if(!debug_cacheMiss) return;
extern int currFrameCounter;
if(currFrameCounter<200) return;
static FILE* outf = NULL;
if(!outf) outf = fopen("c:\\miss.txt","wb");
fprintf(outf,"%05d,%08X,%d\n",currFrameCounter,DebugEventData.addr,DebugEventData.size);
}
//------------------------------------------------
DebugStatistics DEBUG_statistics;

7
desmume/src/debug.h
View File

@ -147,8 +147,9 @@ enum EDEBUG_EVENT
{
DEBUG_EVENT_READ=1, //read from arm9 or arm7 bus, including cpu prefetch
DEBUG_EVENT_WRITE=2, //write on arm9 or arm7 bus
DEBUG_EVENT_EXECUTE=4, //prefetch on arm9 or arm7, triggered after the read event
DEBUG_EVENT_ACL_EXCEPTION=8, //acl exception on arm9
DEBUG_EVENT_EXECUTE=3, //prefetch on arm9 or arm7, triggered after the read event
DEBUG_EVENT_ACL_EXCEPTION=4, //acl exception on arm9
DEBUG_EVENT_CACHE_MISS=5, //cache miss on arm9
};
enum EDEBUG_NOTIFY
@ -201,6 +202,7 @@ void HandleDebugEvent_Read();
void HandleDebugEvent_Write();
void HandleDebugEvent_Execute();
void HandleDebugEvent_ACL_Exception();
void HandleDebugEvent_CacheMiss();
inline void HandleDebugEvent(EDEBUG_EVENT event)
{
@ -210,6 +212,7 @@ inline void HandleDebugEvent(EDEBUG_EVENT event)
case DEBUG_EVENT_WRITE: HandleDebugEvent_Write(); return;
case DEBUG_EVENT_EXECUTE: HandleDebugEvent_Execute(); return;
case DEBUG_EVENT_ACL_EXCEPTION: HandleDebugEvent_ACL_Exception(); return;
case DEBUG_EVENT_CACHE_MISS: HandleDebugEvent_CacheMiss(); return;
}
}