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DMA timing renovation (#1207)

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* 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.
This commit is contained in:
Arisotura
2021-08-31 02:28:34 +02:00
committed by GitHub
parent e1f3fc75ea
commit d20543c119
8 changed files with 786 additions and 217 deletions
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30
src/CP15.cpp
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@ -225,7 +225,8 @@ 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++)
{
@ -233,7 +234,7 @@ void ARMv5::UpdatePURegion(u32 n)
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;