Change TMemCheck::Action to return whether to break rather than calling
PPCDebugInterface::BreakNow, as this simplified the implementation; then
remove said method, as that was its only caller. One "interface" method
down, many to go...
Without fastmem, the JIT code still does an inline check for RAM
addresses. With watchpoints we have to disable that too. (Hardware
watchpoints would avoid all the slow, but be complicated to implement
and limited in number - I doubt most people debugging games care much if
they run slower.)
With this change and watchpoints enabled, Melee runs at no more than 40%
speed, despite running at full speed without them. Oh well. Better
works slowly than doesn't bloody work.
Incidentally, I'm getting an unrelated crash in
PowerPC::HostIsRAMAddress when shutting down a game. This code sucks.
psq_st performs one store, and psq_ld one load, from the perspective of the
MMU; getting this wrong leads to potentially incorrect behavior (incorrect page
faults, weirdness with the gather pipe, etc.). Fix this, and stop masking
the address when checking for gather pipe writes.
Also a bunch of cleanup.
The PowerPC CPU has bits in MSR (DR and IR) which control whether
addresses are translated. We should respect these instead of mixing
physical addresses and translated addresses into the same address space.
This is mostly mass-renaming calls to memory accesses APIs from places
which expect address translation to use a different version from those
which do not expect address translation.
This does very little on its own, but it's the first step to a correct BAT
implementation.
