DMA timing renovation (melonDS-emu#1207)

* make timers usable for measurement shito without being assfuckingly unreliable

* bürp

* Arisotura can you ever clean up your goddamn code

also regroup the timer code instead of having it split weirdly

* make the set-timing functions a tad less hacky

* congrats Arisotura you made an ass-enum

* add timing region tables, and separate timings for ARM9 DMA (exempt of 3c penalty)

* temp work on DMA timings, not finished

also, did you know? 'increment/reload' is also a thing for the source address

* begin work

* add some of the GBA slot/wifi timings

* complete it, I guess

* make some progress

* getting somewhere

* sdsdfs

* see, Arisotura, was it that hard? blarg.

src/CMakeLists.txt

@@ -15,6 +15,7 @@ add_library(core STATIC
 	CP15.cpp
 	CRC32.cpp
 	DMA.cpp
+	DMA_Timings.h
 	DSi.cpp
 	DSi_AES.cpp
 	DSi_Camera.cpp

src/CP15.cpp

@@ -225,15 +225,16 @@ void ARMv5::UpdatePURegion(u32 n)
         usermask |= 0x40;
     }
 
-    //printf("PU region %d: %08X-%08X, user=%02X priv=%02X\n", n, start<<12, end<<12, usermask, privmask);
+    printf("PU region %d: %08X-%08X, user=%02X priv=%02X\n", n, start<<12, end<<12, usermask, privmask);
+    printf("%08X/%08X\n", PU_DataRW, PU_CodeRW);
 
     for (u32 i = start; i < end; i++)
     {
         PU_UserMap[i] = usermask;
         PU_PrivMap[i] = privmask;
     }
 
-    UpdateRegionTimings(start<<12, end<<12);
+    UpdateRegionTimings(start, end);
 }
 
 void ARMv5::UpdatePURegions(bool update_all)
@@ -249,7 +250,7 @@ void ARMv5::UpdatePURegions(bool update_all)
         memset(PU_UserMap, mask, 0x100000);
         memset(PU_PrivMap, mask, 0x100000);
 
-        UpdateRegionTimings(0x00000000, 0xFFFFFFFF);
+        UpdateRegionTimings(0x00000, 0x100000);
         return;
     }
 
@@ -266,16 +267,11 @@ void ARMv5::UpdatePURegions(bool update_all)
 
     // TODO: this is way unoptimized
     // should be okay unless the game keeps changing shit, tho
-    if (update_all) UpdateRegionTimings(0x00000000, 0xFFFFFFFF);
+    if (update_all) UpdateRegionTimings(0x00000, 0x100000);
 }
 
 void ARMv5::UpdateRegionTimings(u32 addrstart, u32 addrend)
 {
-    addrstart >>= 12;
-    addrend   >>= 12;
-
-    if (addrend == 0xFFFFF) addrend++;
-
     for (u32 i = addrstart; i < addrend; i++)
     {
         u8 pu = PU_Map[i];
@@ -420,7 +416,7 @@ void ARMv5::ICacheInvalidateAll()
 
 void ARMv5::CP15Write(u32 id, u32 val)
 {
-    //printf("CP15 write op %03X %08X %08X\n", id, val, R[15]);
+    //if(id!=0x704)printf("CP15 write op %03X %08X %08X\n", id, val, R[15]);
 
     switch (id)
     {
@@ -520,7 +516,7 @@ void ARMv5::CP15Write(u32 id, u32 val)
         return;
 
     case 0x502: // data permissions
-        {
+        {printf("SET DATAPERM %08X (%08X %08X)\n", val,PU_DataRW,PU_DataRW ^ val);
             u32 diff = PU_DataRW ^ val;
             PU_DataRW = val;
             for (u32 i = 0; i < 8; i++)
@@ -814,6 +810,12 @@ void ARMv5::DataRead16(u32 addr, u32* val)
 
 void ARMv5::DataRead32(u32 addr, u32* val)
 {
+    /*if (!(PU_Map[addr>>12] & 0x01))
+    {printf("addr %08X very bad\n", addr);
+        DataAbort();
+        return;
+    }*/
+
     DataRegion = addr;
 
     addr &= ~3;
@@ -908,6 +910,12 @@ void ARMv5::DataWrite16(u32 addr, u16 val)
 
 void ARMv5::DataWrite32(u32 addr, u32 val)
 {
+    /*if (!(PU_Map[addr>>12] & 0x02))
+    {printf("addr %08X wr very bad\n", addr);
+        DataAbort();
+        return;
+    }*/
+
     DataRegion = addr;
 
     addr &= ~3;