If a NaN of any type is passed as the operand to either of these
instructions, we shouldn't go down the regular code path, as we end up
potentially setting the wrong flags. For example, we wouldn't set the
FPSCR.VXCVI bit properly. We'd also set FPSCR.FI, when in actuality it
should be unset.
If an SNaN is passed as an operand, we also need to set the FPSCR.VXSNAN
bit as well.
The flag setting behavior for these can be found in Appendix C.4.2 in
PowerPC Microprocessor Family: The Programming Environments Manual for
32 and 64-bit Microprocessors.
fctiwz functions in the same manner as fctiw, with the difference being
that fctiwz always assumes the rounding mode being towards zero. Because
of this, we can implement fctiwz in terms of fctiw's code, but modify it
to accept a rounding mode, allowing us to preserve proper behavior for
both instructions.
We also move Helper_UpdateCR1 to a temporary home in
Interpreter_FPUtils.h for the time being. It would be more desirable to
move it to a new common header for all the helpers, so that even JITs
can use them if they so wish, however, this and the following changes
are intended to only touch the interpreter to keep changes minimal for
fixing instruction behavior.
JitCommon already duplicates the Helper_Mask function within
JitBase.cpp/.h, and the ARM JIT includes the Interpreter header in order
to call Helper_Carry. So a follow up is best suited here, as this
touches two other CPU backends.
We can just memcpy the data instead of pointer-casting data, which is
alignment-safe and doesn't run afoul of aliasing rules.
Previously it also made it seem as if data itself pointed to valid
usable data, but it doesn't, it simply functions as an out parameter
where we push data built up from the GetState() functions into it.
If any operand is a signaling NaN, we need to signify this by setting
the VXSNAN bit.
Fixes NaN flag setting for fmsub, fmsubs, fnmsub, fnmsubs, ps_msub, and
ps_nmsub instructions.
If any operand is a signaling NaN, we need to signify this by setting
the VXSNAN bit.
Fixes NaN flag setting for fmadd, fmadds, fnmadd, fnmadds, ps_madd,
ps_nmadd, ps_madds0, and ps_madds1
If either operand is a signaling NaN, we need to signify this by setting
the VXSNAN bit.
This fixes NaN flag setting for fsub, fsubs, and ps_sub instructions.
If either operand is a signaling NaN, we need to signify that by setting
the VXSNAN bit.
This fixes NaN flag setting for fdiv, fdivs and ps_div instructions.
This might happen if someone moves settings between e.g. a PC and
an Android device, or if someone was using JITIL and updates Dolphin.
I also made the panic alert a bit more explanatory.
It's not used anywhere other than in DolphinQt2, where the usage is
incorrect and stupid since we shouldn't be trying to stop the core
and 'restore config' that was changed by the core at app exit time,
but immediately when the core is being shut down.
Makes all of the naming consistent with our code style, and makes
parameters match their header equivalents.
Essentially just a clean-up of things that weren't migrated over
already.
If either of the operands are signaling NaNs, then an invalid operation
exception needs to be indicated within the FPSCR.
This corrects SNaN flag setting for fmul, fmuls, ps_mul, ps_muls0, and
ps_muls1.
In old GCC versions, capturing 'this' does not work for some lambdas.
The workaround is to not use auto for the parameter (even though the
type is obvious). This can be dropped once we require GCC 7.
If the input is a signaling NaN, then we need to signal that via setting
the FPSCR.VXSNAN bit. We also shouldn't update the FPRF flags if
FPSCR.VE is set.
If the FPSCR.VE bit is set and an invalid operand is passed in, then the FPRF
shouldn't be updated. Similarly this is also the case when the FPSCR.ZE bit
is set and negative or positive zero is passed in as the operand.
If FPSCR.ZE is set and a divide by zero exception is signaled, then the
FPRF shouldn't be updated with a result. Similarly, if the input is an
SNaN and FPSCR.VE is set, then the FPRF shouldn't be updated.
The VX bit is intended to be a summary bit indicating the occurrence of
any kind of invalid operation. Therefore, whenever an invalid operation
exception is set, also set VX.
This corrects our CR flag setting for multiple instructions in certain
scenarios. This corrects flag setting cases in fadd, fadds, fctiw, fctiwz, fdiv,
frsp, frsqrte, fsub, and fsubs (and technically every floating-point
instruction that we make more accurate in the future with regards to
flag setting).
This ports the Wii filesystem root, Wii SD card path and dump path
settings to the new config system (OnionConfig).
My initial plan was to wait until DolphinWX was removed before porting
most of the Main (Core, DSP, General) settings to onion config, but
I've decided to submit a small part of those changes to fix
[issue 10566](https://bugs.dolphin-emu.org/issues/10566).
Removes the need to manually set the FileUtil path in the UI frontends
and gets rid of some more members that don't really belong in SConfig.
Also fixes a bug which would cause the dump path not to get created
after change.
These disc images are only used on dev units and not retail units.
There are two important differences compared to normal Wii disc images:
- The data starts 0x8000 bytes into each partition instead of 0x20000
- The data of a partition is stored unencrypted and contains no hashes
Our old implementation was just guesswork and doesn't work at all.
According to testing by GerbilSoft, this commit's implementation
is able to read and extract files in the filesystem correctly,
but the tested game still isn't able to boot. (It's thanks to their
info about unencrypted disc images that I was able to make this commit.)
Initialising Wii filesystem contents should be done after Boot and
not in HW to ensure that we operate with the correct title context
and to make sure required title directories exist (so that Movie and
Netplay code can copy data from and to the temporary NAND).
Previously, given cases such as 0x80000000 / 0xFFFFFFFF we'd incorrectly
set the destination register value to zero. If the dividend is negative,
then the destination should be set to -1 (0xFFFFFFFF), however if the
dividend is positive, then the destination should be set to 0.
Note that the 750CL documents state that:
"If an attempt is made to perform either of the divisions --
0x80000000 / -1 or <anything> / 0, then the contents of rD are
undefined, as are the contents of the LT, GT, and EQ bits of the CR0
field (if Rc = 1). In this case, if OE = 1 then OV is set."
So this is a particular behavior of the hardware itself.
Executing a supervisor-level instruction in user mode is supposed to
cause a program exception to occur.
The following supervisor instructions are present:
- dcbi
- mfmsr
- mfspr
- mfsr
- mfsrin
- mtmsr
- mtspr
- mtsr
- mtsrin
- rfi
- tlbie
- tlbsync
In 0337ca116a checks within mfspr and
mtspr were added. This change adds the trivial checks to the other
instructions.
Keeps signed values out of bit arithmetic (not that there's any issues
that could arise from it in these situations, but it does look more
consistent, and silences compiler warnings)
Keeps all of the interpreter-specific exception handling functions
together in a reusable way across translation units, similar to
FPUtils.h for reusable floating-point functions.
There's no reason to use int here as opposed to an unsigned value.
Video_AccessEFB() takes its arguments as u32 values, so we'd be doing
sign conversions for no reason here (along with causing avoidable
compiler warnings).
If a program executing in user mode tries to write to any SPRs other than
XER, LR, or CTR registers, then a program exception occurs. Similarly
this also applies for reading SPRs as well, however the upper and lower
timebase halves can also be read (but not written to).
If HID0.NOOPTI is set, then dcbt and dcbtst are no-oped globally. We
currently don't perform data cache emulation, but we put this in anyway
so this detail isn't forgotten about if data cache emulation is
introduced at some point in the future.
This implements ES_VerifySign which is notably used by the system menu
when importing saves.
Now *all* ES commands that are actually used by titles are implemented.
- Move all of the ec functions into the Common::ec namespace.
- Give the public functions better names and some usage information.
- Move all of the "elt" related functions into an "elt" class including
all of the arithmetic operations, so that the logic becomes clearer
and feels less like assembly.
This also makes it much more obvious what the parameters are, instead
of only using unsigned char* (which doesn't tell anything about what
the pointer is used for or the size).
- Similarly, add a new "Point" class and move point functions there.
Overload the arithmetic operators to make calculations easier to read
This function in both JITs is only ever called by passing the JIT's code
buffer into it. Given this is already accessible, since the functions
are part of the respective JIT class, we can just remove this parameter.
This also cleans up accesses with the new code buffer, as we don't need
to do janky looking dereference-then-index expressions.
This class effectively acted as a "discount vector", that would simply
allocate memory and then delete it in the destructor when it goes out of
scope.
We can just use a std::vector directly to reduce this boilerplate.
ImportTitleDone only checks if all required contents have been imported
for system titles.
This fixes the system menu not being able to recreate title directories
to copy a save back to the NAND by using title import functionality.
Given this is a bitmask, we should be using an unsigned type to store it
(especially given it's outside the range an int can represent properly
without being considered negative).
No behavior change is caused by this, it just silences a sign conversion
warning.
PowerPC.h at this point is pretty much a general glob of stuff, and it's
unfortunate, since it means pulling in a lot of unrelated header
dependencies and a bunch of other things that don't need to be seen by
things that just want to read memory.
Breaking this out into its own header keeps all the MMU-related stuff
together and also limits the amount of header dependencies being
included (the primary motivation for this being the former reason).
Github didn't detect conflicts here, however, since the float handling
functions were moved into the Common namespace, this would cause a build
failure.
Ideally none of these macros would exist (long-term goal), however in
the meantime at least make sure expressions always evaluate correctly
(thankfully no current usages rely on this).
Given we're operating with flags and bit representations, lets avoid
signed values here. It lessens the amount of sign conversion warnings
and lessens the amount of things to think about screwing you over when
making changes to the interpreter among other things.
These can be expressed in a slightly cleaner manner without so many
casts. While we're at it, also get rid of unnecessary indexing (we
already have the result nearby).
Extracts the self-contained code into its own function to clean up the
flow of Jit() a little more.
This also introduces a helper function to HLE.h that will be used to
reduce the boilerplate here and in the interpreter and Jit64 in the
following commits.
This function performs all of the preliminary checks required prior to
attempting to hook/replace a function at a given address. The function then
calls a provided object that satisfies the FunctionObject concept in the
C++ standard library. This can be a lambda, a regular function pointer,
an object with an overloaded function call operator, etc. The only
requirement is that the function return a bool, indicating whether or
not the function was replaced, and that it can take parameters in the
form: fn(u32 function, HLE::HookType type)
Gets rid of a second pair of ifdefs in the constructor. This also makes
sure the fd on Unix/BSD platforms is uniformly initialized. Previously
fd would be in an inconsistent state on FreeBSD or OpenBSD due to the
BSD OS checks not being present in the #elif within the constructor.
Previously, the entirety of CEXIETHERNET was exposed publically, which
wasn't necessary. We simply make the thread function part of the
internal interface, which gives it access to internal data members,
while keeping everything else outside of it.
Given these HLE classes inherit from a common base with a virtual
destructor, override is more appropriate here, as virtual propagates to
these destructors anyway.
This is also safer. If the base class' destructor is ever made
non-virtual, then these classes will cause a compilation error if they
aren't taken into account, as they'd be overriding a non-virtual
function (the destructor).
Paired single (ps) instructions can call asm_routines that try to update
PowerPC::ppcState.pc. At the time the asm_routine is built, emulation has
not started and the PC is invalid (0). If the ps instruction causes an
exception (e.g. DSI), SRR0 gets clobbered with the invalid PC.
This change makes the relevant ps instructions store PC before calling out
to asm_routines, and prevents the asm_routine from trying to store PC
itself.
Moves the codebuffer access variables closer to their first use, and
gets rid of multiple indexing expressions. We already know which op
we're accessing in particular, so just make a reference to it and access
it instead of duplicating the expression all over the place.
Makes the enum strongly typed. A function for retrieving the string
representation of the enum is also added, which allows hiding the array
that contains all of the strings from view (i.e. we operate on the API,
not the exposed internals). This also allows us to bounds check any
querying for the strings.
Export and ExportAll now open a directory picker (that defaults to the
previous default directory, i.e. the Dolphin user dir).
Also removes the need to return the path in the export functions since
the user knows which path they chose.
This moves the result dialogs to DolphinQt2, since WiiSave should not
really be responsible for interacting with the user as a simple
Wii save importing/exporting class.
This also fixes Wii save import/export showing result dialogs twice,
once from WiiSave, and another time from DolphinQt2.
Move the import/export operation into separate functions, as it doesn't
really make sense for the constructor to do *everything*, including
printing success/failure message boxes.
The existing constructor was split into two: one that takes a path,
and another taking a title ID. This makes it more obvious what is
actually done when a path/TID is passed and also clarifies what
parameters should be passed. (No more magic 0 or "" value.)
This allows avoiding two copies of the executable data being created in
the following scenario (using pseudocode):
some_function()
{
std::vector<u8> data = ...;
DolReader reader{data};
...
}
In this scenario, if we only use the data for passing it to DolReader,
then we have to perform a copy, as the constructor takes the std::vector
as a constant reference -- you cannot move from a constant reference,
and so we copy data into the DolReader, and perform another copy in the
constructor itself when assigning the data to the m_bytes member
variable. However, we can do better.
Now, the following is allowable as well:
some_function()
{
std::vector<u8> data = ...;
DolReader reader{std::move(data)};
...
}
and now we perform no copy at any point in the reader's construction, as
we just std::move the data all the way through to m_bytes.
In the case where we *do* want to keep the executable data around after
constructing the reader, then we can just pass the vector without
std::move-ing it, and we only perform a copy once (as we'll std::move
said copy into m_bytes). Therefore, we get a more flexible interface
resource-wise out of it.
This makes it possible to use enums as the config type.
Default values are now clearer and there's no need for casts
when calling Config::Get/Set anymore.
In order to add support for enums, the common code was updated to
handle enums by using the underlying type when loading/saving settings.
A copy constructor is also provided for conversions from
`ConfigInfo<Enum>` to `ConfigInfo<underlying_type<Enum>>`
so that enum settings can still easily work with code that doesn't care
about the actual enum values (like Graphics{Choice,Radio} in DolphinQt2
which only treat the setting as an integer).
Dolphin doesn't use any of the WC24 files, so this can be done when
actually starting emulation in WiiRoot. The benefit of moving the
copy is that we don't need to handle temporary NANDs in a special way.
{Initialize,Shutdown}WiiRoot should only be responsible for setting the
SESSION_WII_ROOT or managing the temporary NAND directory.
Move all the content manipulation out of these functions to ensure
separation of concerns and call them after/before WiiRoot init/shutdown
to make sure they operate on the correct root.
If we don't flush the values, they persist in the register cache,
potentially resulting in the values being out of sync with PPCSTATE.
This was causing random crashes in games, mainly booting, when certain
JIT instructions were disabled, or forced to fall back to interpreter.
This excludes the second argument from template deduction.
Otherwise, it is required to manually cast the second argument to
the ConfigInfo type (because implicit conversions won't work).
e.g. to set the value for a ConfigInfo<std::string> from a string
literal, you'd need a ugly `std::string("yourstring")`.
This can be considered a hack, but it essentially neuter the bias applied on boot for both console on the RTC. This avoids having the time on boot be changes significantly while the user would want a specific RTC and it also avoids possible underflow of the RTC if it is near the epoch.
Also move it to MathUtils where it belongs with the rest of the
power-of-two functions. This gets rid of pollution of the current scope
of any translation unit with b<value> macros that aren't intended to be
used directly.
Change SettingsHandler to take a buffer instead of assuming that the
setting file to read is always on the host filesystem for more
flexibility and make it possible to use the new filesystem interface.
Keeps them all next to each other and deduplicates a few constants,
notably the PPC UIDs. Apparently I forgot that I already added them
for SetupStreamKey.
It was off by about 8 years because it was actually the same as the GC epoch, however, the reason it worked all this time was because the default RTC counter bias of the Wii was not 0, but a value that is about 8 years in seconds. This broke custom RTC as a custom RTC of the gc epoch was underflowing b ecause the wii epoch was thought to be much later.
The existing backend did not handle cases where the target exists
correctly.
This is a bug that has been around forever but was only recently
exposed when ES started to use our FS code.
Also adds some unit tests to make sure this won't get broken again.
Creating a file then opening it in read write mode is a pretty common
operation. This commit adds a helper function that makes it easier
to read and clearer.
Keeps all of the floating-point utility functions in their own file to
keep them all together. This also provides a place for other
general-purpose floating-point functions to be added in the future,
which will be necessary when improving the flag-setting within the
interpreter.
FPSCR.FEX is supposed to be a logical OR of all floating-point exception
bits masked by their respective enable bits.
Currently UpdateFPSCR() isn't called by anything in the interpreter
except for mcrfs and mffs, so this doesn't alter existing behavior that much.
However, this will be necessary in future PRs when making the interpreter more
accurate in how it sets flags.
Prevent implicit conversions to UReg_FPSCR. Given the semantics of a
random magic value and the FPSCR are different, make explicit
conversions a requirement to signify intent.
The MSR.LE bit is supposed to be set to the value of MSR.ILE upon
entering an exception vector to control whether the environment in said
vector operates as little endian or big endian. If this bit is ORed into
the LE bit, then the scenario of operating in little endian but wanting
to take exceptions in big endian will be incorrectly handled.
Analogous to File::CreateFullPath, but for the Wii filesystem so this
ensures that directories and files receive proper attributes.
(This function is technically not part of the FS sysmodule but it's in
an internal FS library that is reused in several IOS sysmodules.)
Prevents implicit construction of MSR instances from integral values.
This is beneficial, considering MSR values have an intended
representation while a regular magic value doesn't. So make these
conversions required to be explicit.
Gets rid of the need to construct UReg_MSR values around the the actual
member in order to query information from it (without using shifts and
masks). This makes it more concise in some areas, while helping with
readability in some other places (such as copying the ILE bit to the LE
bit in the exception checking functions).
The game Go Vacation (SGVEAF) currently stutters a lot because it keeps
overflowing the far code cache and all code needs to be re-jitted.
Logging this warning gives a useful hint as to what is causing the
stuttering.
Qt introduced a checkbox to toggle the debugger UI, this makes it work into a setting stored in the INI, it also makes the -d argument only in effect when enabled, in such case, it will override the INI by overriding it.
Since all FS access will go through the new FS interface (PR #6421)
in order to keep track of metadata properly, there is no need to return
absolute paths anymore.
In fact, returning host paths is a roadblock to using the FS interface.
This starts the migration work by adding a way to get paths that are
relative to the Wii NAND instead of always getting absolute paths
on the host FS.
To prepare for future changes, this commit also makes returned paths
canonical by removing the trailing slash when it's unneeded.
Eventually, once everything has been migrated to the new interface,
we can remove the "from" parameter.
Also makes y_scale a dynamic parameter for EFB copies, as it doesn't
make sense to keep it as part of the uid, otherwise we're generating
redundant shaders.
Use the newly added GetSystemDefaultInterfaceOrFallback() to return
actual information for the default interface, not just dummy
interface details.
This also fixes GetInterfaceOpt(0x4003) and gethostid() returning
inconsistent information. Prior to this change, GetInterfaceOpt(0x4003)
would return 10.0.1.30 and gethostid would give a totally unrelated IP.
These aren't dependent on calling order so we can just organize all of the statics together
instead of splitting them up over the file. This also allows us to organize a common spot for
file static variables as well.
Just re-disassembled STM and found out I have made a mistake when
I changed STM stuff back in 2016.
I accidentally made STM reset the event hook on close when it should
have been done in the destructor (i.e. when IOS gets reset on console).
Verified in IDA that STM just `IOS_ResourceReply(request, IOS_OK)`
without ever resetting the hook.
Some button names should be translated, for instance Up, Left and such.
At the same time, some other button names shouldn't be translated,
for reasons that might be less obvious. In 0146456af, I removed the
_trans markers for button names that never need to be translated
(such as A and B), but that isn't actually enough to ensure that
DolphinWX won't try to translate them anyway. This commit adds a bool
that explicitly tells the GUI whether a button name should be translated.
Otherwise we'll have problems like the GUI treating the button name "B"
(which isn't supposed to be translated) as matching the translatable
string "B" (being an abbreviation of "bytes"), meaning that the button
"B" will be labeled "o" when running Dolphin in French (after
translations get pulled from Transifex the next time).
By the way, while it turned out that DolphinWX translated all button
names, it also turned out that DolphinQt2 translated *no* button names.
Go figure. This commit makes them consistent with each other.
If FPSCR[VE] is set, a result isn't supposed to be written to the destination,
just the FPSCR[VXSNAN] bit gets set, and FPSCR[FR] and FPSCR[FI] get set to zero.
If FPSCR[VE] isn't set, then we do write out a result, however, the FPSCR[FPRF]
field is updated to signify a QNaN (yes, a QNaN, the FPRF field doesn't have
a bit configuration for SNaNs).
There's no real requirement to make this const, and this should also
be decided by the calling code, considering we had places that would
simply cast away the const and carry on.
It's not common code that could be reused for, say, Citra;
it's absolutely specific to Wii emulation and only used by the Dolphin
core, so let's move it there.
Another reason for doing this is to avoid having Common depend on Core.
It was discovered that some titles rely on filesystem metadata to work
properly. Currently, in master they either simply won't find their
save files (for example Bolt) or will complain about the Wii system
memory being corrupted (on first use or every time depending on
the title).
In order to even be able to keep track of file metadata, we first need
to eliminate all direct accesses to the NAND and make all kinds of
operations go through the filesystem code added in PR 6421.
This commit starts the migration process by making SysConf use
the new FS interface.
This used to be necessary for properly cleaning up the FS state because
the old FS implementation used static state and only performed cleanup
in the close function, not in the destructor.
Now that the static state is gone, we do not need to close devices
manually anymore.
Migrates the state to be instance-based as opposed to being a flat
namespace. This keeps behavior localized to its own instantiable unit
(and forces uses of the class to also be localized, lest they cart around
an instance all over the place).
This was necessary to work around a FS timing issue which caused small
writes to take much longer than they should.
Now that we emulate timings for the FS module including its file cache,
we don't need to maintain this workaround anymore.
Everything that links in core doesn't need to see anything related to bochs, because it's only used internally.
Anything else that relies on bochs should be linking it in explicitly.
Using this in its current form would invoke undefined behavior, as it's
using a union to type pun between data types. It's also, well, unused,
so we don't need to keep it around.
We already read the necessary information with the
HostRead_Instruction() call. Internally, it calls HostRead_U32() as
well, so there's no difference in behavior.
If the locked cache isn't enabled, dcbz_l is illegal to execute
(locked cache is off, locked cache instructions don't work, makes sense)
This makes exception handling more accurate. It was previously possible to hit the DSI exception
handler when HID2[LCE] is set to zero, which isn't correct.
With this change we no longer hit the DSI handler, however we still have a lingering issue elsewhere
likely to do with exception precedence, we seem to hit the Floating Point exception handler instead
in some cases. This isn't due to the instruction itself directly however, so this is just another bug
to fix elsewhere.
This is one of the conditions for an alignment exception documented in
the 750CL architecture reference manual in section 4.5.6, which also
applies to the Gekko microprocessor.
This is an exception condition documented within section 4.5.6 in the
architecture reference manual for the PPC 750CL, which also applies to
the Gekko microprocessor.
Also moves dcbz_l's implementation out of Interpreter_Paired and beside
dcbz where it belongs.
The effective address given to these instructions must be word (4 byte) aligned,
and if the address is not aligned like that, then an alignment exception
gets triggered.
We currently don't update the DSISR in this case properly, since we
didn't really handle alignment exceptions outside of ecowx and eciwx,
and even then the handling of it isn't really that great, considering
the DAR isn't updated with the address that caused the exception to
occur.
The DSISR will eventually be amended to be properly updated.
If the copy assignment operator is deleted, then the copy constructor
should be deleted as well, otherwise it's a hole in the API where copies
can be made (and if this were an intended case, it should be
documented).
So we delete the copy constructor and explicitly default the move
assignment and move constructor to signify this is intended to be a
move-only type.
These are bit manipulation functions, so they belong within BitUtils.
This also gets rid of duplicated code and avoids relying on compiler
reserved names existing or not existing to determine whether or not we
define a set of functions.
Optimizers are smart enough in GCC and clang to transform the code to a
ROR or ROL instruction in the respective functions.
The only place this library is needed (core) is already linked in the core target.
Also make the linkage private to create linkage failures if the dependency isn't
explicitly linked in elsewhere where it should be.
Reduces the dependency on the LIBS variable.
Return a FileHandle which will automatically close the FD when
the handle goes out of scope. For the rare cases where this behaviour
is undesirable, the FD can be released from the handle.
This is the large change in the branch.
This lets us use either the host filesystem or (in the future) a NAND
image exactly the same way, and make sure the IPC emulation code
behaves identically. Less duplicated code.
Note that "FileIO" and "FS" were merged, because it actually doesn't
make a lot of sense to split them: IOS handles requests for both
/dev/fs and files in the same resource manager, and as it turns out,
/dev/fs commands can *also* be sent to non /dev/fs file descriptors!
If we kept /dev/fs and files split, there would be no way to
emulate that correctly. I'm not aware of anything that does that (yet?)
but I think it's important to be correct.
Now that we have a proper filesystem interface, it makes more sense
to return it instead of the emulated IOS device (which isn't
really usable for any purpose other than emulated IPC).
Extract the existing FS code into a HostBackend implementing
the filesystem interface.
Compared to the original code, this uses less static state.
The open host files map is now a member variable
as it should have been. Filesystem handles are now also easier
to savestate. Some variable names and log messages were cleaned up.
Nothing else has been changed.
Add a new FileSystem class that can be used to perform operations
on the emulated Wii filesystem.
This will allow separating the IPC code (reading from and writing to
memory to handle IOS FS commands) and the actual filesystem code
in a much better way.
This also paves the way for implementing another filesystem backend
in the future -- NAND images for more complete emulation, including
filesystem metadata like permissions or file orders, which some games
and homebrew actually care about -- without needing to make any more
changes to the other parts of the codebase, in addition to making
filesystem behaviour tests easier to write.
Makes our libraries explicitly link in which libraries they need.
This makes our dependencies explicit and removes the reliance on the
LIBS variable to contain the libraries that they need.
This is technically undefined behavior, but regardless of that, it's not
even necessary since we can just make a temporary around the MSR value
and just discard it when done with it, since all we do is query the FP
bit value with it.
Given how the hooking operates, we may not execute an instruction.
Instead of making the state a static local to the function, just make it
part of the lifecycle of the Interpreter class.
This was only ever used by the DSP assembler, and even then it was
sparsely used. Get rid of it to be consistent with types in other
sections of the DSP code.
These aren't necessary as the type being stored into a u32 are of the
same signedness and are smaller in data size, so there's no truncation
being performed.
Skip ubershader mode works the same as hybrid ubershaders in that the
shaders are compiled asynchronously. However, instead of using the
ubershader to draw the object, it skips it entirely until the
specialized shader is made available.
This mode will likely result in broken effects where a game creates an
EFB copy, and does not redraw it every frame. Therefore, it is not a
recommended option, however, it may result in better performance on
low-end systems.
The overflow check needs to occur before the condition register update
due to the fact that the summary overflow (SO) bit is used in the
updating of the condition register. If we set any overflow bits after
updating the CR, then we can potentially incorrectly report that an
overflow did not happen (in the case the SO bit wasn't set previously).
ori can be used as a NOP if the two register operands are the same, and
the immediate is zero, not only if the two register operands are r0.
Also removes the check for !inst.Rc, as ori only has one encoding, and
said encoding doesn't even have a record bit in it.
This fix the awkwardness of having the symbols detection, parsing and loading related logs be in OS HLE while they don't have anything to do with that.
The OV bit is non-sticky. Therefore, after an overflow-enabled
instruction executes, if an overflow does *not* occur, then OV is
cleared. SO is sticky however, so it staying set in this case is
correct.
With this, JitAsm code doesn't have any reliance on the JIT global
variable. This means the core JIT64 code no longer relies on said
global at all. The Jit64 common code, however, still has some offenders.
Notably, EmuCodeBlock and Jit64AsmCommon are the remaining places in the
common code that make use of the global variable.
The AutoUpdate module is a generic update checker mechanism which can be
used by UI backends to trigger an auto-update check as well as the
actual update process.
Currently only configurable through .ini and the Qt implementation is
completely placeholder-y -- blocking the main thread on a network
request on startup, etc.
Ensures that upon construction of a JitBase instance, that all
underlying members within the option and state structs are guaranteed
to be initialized.
This prevents potentially using a member uninitialized in some form.
Also amends the condition that was being checked. Previously it was
checking if the destination register value was 0x80000000, however it's
actually the source register that should be checked.
This macro (that has unfortunately become the de-facto way of
introducing targets) has a lot of disadvantages that outweigh the fact
that you avoid writing two extra lines of CMake script.
- It encourages the use of variables. In a build system the last thing
we want to care about is mutable state that can be avoided.
- It only handles linking in the libraries and nothing else. It's a
laziness macro.
- We should be explicit about what we're doing by introducing the target
first, not last.
This gets the ball rolling by migrating Core off the macro. Note that
this is essentially 1-to-1 unrolling of the macro, therefore we're
still linking in all libraries as public, even though that may not be
necessary.
This can be revisited once everything is off the macro for a quicker
transition period.
Trims the direct usages of the global by making the code go through the
JIT interface (where it should have been going in the first place).
This also removes direct JIT header dependencies from the breakpoints as
well. Now, no code uses the JIT global other than JIT code itself, and
the unit tests.
All of these with the record bit set update condition register 1 with the
contents of the FPSCR's FX, FEX, VX and OX bits.
Helper_UpdateCR1() does exactly that, so we use it here to perform this
for us.
This is only ever memset to zero and never used again.
This also gets rid of an instance of undefined behavior considering the
draft standard for C++17 (N4659) states at [dcl.type.cv] paragraph 5:
"
The semantics of an access through a volatile glvalue are implementation-defined.
If an attempt is made to access an object defined with a volatile-qualified type
through the use of a non-volatile glvalue, the behavior is undefined.
"
This prevents Dolphin from crashing when the emulated software crashes.
AFAIK, there is absolutely no performance to enabling this with the
x64 JIT.
Eventually, we should probably just remove bMMU
(https://github.com/dolphin-emu/dolphin/pull/1831). We can't do that
yet because of the ARM JIT.
A very basic hardware test shows that the ARMMSG doesn't change until
IOS replies. (People could have disassembled IOS to verify this too...)
Console:
sending request at 00034640 - ARMMSG 133e0fa0
00000000000000000000000000000010(ack) - ARMMSG 133e0fa0
00000000000000000000000000000100(reply) - ARMMSG 00034640
Dolphin, prior to this fix:
sending request (00034640) - ARMMSG 133e0fa0
00000000000000000000000000000011(ack) - ARMMSG 00034640
00000000000000000000000000000100(reply) - ARMMSG 00034640
Dolphin, after this fix:
sending request at 00034640 - ARMMSG 133e0fa0
00000000000000000000000000000011(ack) - ARMMSG 133e0fa0
00000000000000000000000000000100(reply) - ARMMSG 00034640
(Yes, note that the X1 bit is still set. This is a bug that I will
fix in the next commit.)
The IPC interrupt is triggered when IY1/IY2 is set and Y1/Y2 is written
to even when this results in clearing the bit.
This shouldn't change anything in practice but it's a difference
that Dolphin wasn't taking into account, which made me waste some time
when I was writing a hwtest :/
This adjusts IOS IPC timing to be closer to actual hardware:
* Emulate the IPC interrupt delay. On a real Wii, from the point of
view of the PPC, the IPC interrupt appears to fire about 100 TB ticks
after Y1/Y2 is seen.
* Fix the IPC acknowledgement delay. Dolphin was much, much too fast.
* Fix Device::GetDefaultReply to return more reasonable delays. Again,
Dolphin was way too fast. We now use a more realistic, average reply
time for most requests.
Note: the previous result from https://dolp.in/pr6374 is flawed.
GetTicketViews definitely takes more than 25µs to reply.
The reason the reply delay was so low is because an invalid
parameter was passed to the libogc wrapper, which causes it to
immediately return an error code (-4100).
* Fix the response delay for various replies that come from the kernel:
fd table full, unknown resource manager / device, invalid fd,
unknown IPC command.
Source: https://github.com/leoetlino/hwtests/blob/af320e4/iostest/ipc_timing.cpp
While the code is namespaced out properly, the files weren't separated
into their own directory. This moves the files so that introducing a general
interface is easier in the future for supporting other architectures.
This enables shaders to be compiled while the game is starting, instead
of blocking startup. If a shader is needed before it is compiled,
emulation will block.
This saves us from having to call GetPath when the same file is being
read over and over. (GetPath is more expensive than GetOffset due to
it iterating through parts of the file system and creating strings.)
The original reason I wanted to do this was so that we can replace
the Android-specific code with this in the future, but of course,
just deduplicating between DolphinWX and DolphinQt2 is nice too.
Fixes:
- DolphinQt2 showing the wrong size for split WBFS disc images.
- DolphinQt2 being case sensitive when checking if a file is a DOL/ELF.
- DolphinQt2 not detecting when a Wii banner has become available
after the game list cache was created.
Removes:
- DolphinWX's ability to load PNGs as custom banners. But it was
already rather broken (see https://bugs.dolphin-emu.org/issues/10365
and https://bugs.dolphin-emu.org/issues/10366). The reason I removed
this was because PNG decoding relied on wx code and we don't have any
good non-wx/Qt code for loading PNG files right now (let's not use
SOIL), but we should be able to use libpng directly to implement PNG
loading in the future.
- DolphinQt2's ability to ignore a cached game if the last modified
time differs. We currently don't have a non-wx/Qt way to get the time.
This commit changes devices to always return IPCCommandResult rather
than just a return code for Open() and Close() in order to be able
to better emulate reply timing.
In hindsight, I should have considered we would want to emulate
timing when I cleaned up the device interface, but alas.
This rectifies that mistake.
The option is named DisableCopyToVRAM under the Hacks section in
GFX.ini. It is intentionally not exposed to the GUI, as users should not
need to use it under normal circumstances. The main use is debugging
issues in the EFB-to-RAM shaders.
- Smplification of graphics backend startup/shutdown.
- Don't send complete message until CPU is ready to execute.
- Remove redundant stop message.
- Remove OSD message with backend name.
There are two reasons for this change:
1. It removes many repetitive lines of code.
2. I think it's a good idea to enable the use of old-style section
names even for settings that previously haven't been settable in game
INIs. Mixing the two styles in INIs (using the new style only for new
settings) is not ideal, and people on the forums don't even seem to
know that the new style exists (nobody knew a way to set ubershader
settings per game, for instance). Encouraging everyone to start using
only the new style might work long-term, but it would take take time
and effort to make everyone get used to it. Considering that this commit
*reduces* the amount of code by adding the ability to use old-style
names for more settings, I'd say that adding this ability is worth it.
Some homebrew expect exception handlers to be present -- which is
almost always the case on console, since most of the time homebrew are
launched from either a libogc or SDK title) -- and break if they are
not. To fix this, we just need to include default, dummy handlers.
Set HID0, HID4, GPR1 to values that are used by libogc for
initialisation. This makes boots more similar to a launch
from the HBC or another loader, since normally the registers
have already been initialised by the loader.
This fixes a crash in homebrew that assume GPR1 points to a correct
location and attempt to use it before initialising registers.
Currently, a simple typo in the system name will trigger an assert
message that complains about a "programming error". This is not
user friendly and misleading.
So this changes GetSystemFromName to return an std::optional, which
allows for callers to check whether the system exists and handle
failures better.
This was causing an issue where DolphinQt couldn't save graphics options
(DolphinWX doesn't hit this code path), because this function was being
called before the in-memory config was flushed to disk.
With this PR, the in-memory config isn't reset, and only SYSCONF-related
variables may get changed.
7f0834c9 moved the locations of the Real XFB (now XFB to RAM) and
Disabled XFB (now Immediate Mode) settings. There are programs
other than Dolphin that parse DTM headers, so this is not good.
Note that Immediate XFB actually is the inversion of Disabled XFB.
I hope that's not too much of a problem...
This lets Dolphin know if a configured GameCube Controller should actually
be treated as connected or not.
Talked to @JMC47 a bit about this last night. My use-case is that all of
my controllers are the same hardware (Xbox One controllers) so share the
same configuration (modulo device number). Treating them all as always
connected isn't a problem for most games, but in some (Smash Bros.) it
forces me to go find a keyboard/mouse and unconfigure any controllers
that I don't actually have connected. Hotplugging devices (works on macOS,
at least) + this patch remove my need to ever touch the Controller Config
dialog while in a game.
This patch makes the following changes:
- A new `BooleanSetting` in `GCPadEmu` called "Always Connected", which
defaults to false.
- `ControllerEmu` tracks whether the default device is connected on every
call to `UpdateReferences()`.
- `GCPadEmu.GetStatus()` now sets err bit to `PAD_ERR_NO_CONTROLLER` if
the default device isn't connected.
- `SIDevice_GCController` handles `PAD_ERR_NO_CONTROLLER` by imitating the
behaviour of `SIDevice_Null` (as far as I can tell, this is the only use
of the error bit from `GCPadStatus`).
I wanted to add an OSD message akin to the ones when Wiimotes get
connected/disconnected, but I haven't yet found where to put the logic.
Originally, Layer contained a std::map of Sections, which containted a std::map
containing the (key, value) pairs. Here we flattern this structure so that only
one std::map is required, reducing the number of indirections required and
vastly simplifying the code.
The main problem was that the volume of the mixer wasn't savestated.
The volume is typically 0 at the beginning of a game, so loading a
savestate at the beginning of a game would lead to silent DTK audio.
I also added savestating to StreamADPCM.cpp.
Nowadays that Dolphin detects regions of discs properly and doesn't
force programs with unknown regions (such as homebrew) into running
under a certain region, the "Force Console as NTSC-J" option is
practically useless for making anything run correctly. Enabling it
is however an easy way to totally break many non-Japanese games.
The earlier code always tried to use TitleDatabase for getting
title names, but that didn't work for disc-based games, because
there was no way to get the maker ID.
Unlike VEN, the endpoint is determined by the value at 8-12.
If it's non-zero, HID submits the request to the interrupt OUT
endpoint. Otherwise, the request is submitted to the IN endpoint.
This commit changes HIDv5 to keep track of endpoints (like IOS does)
and use them when submitting interrupt transfers.
This implements /dev/usb/hid v5, found in IOS57, IOS58 and IOS59.
This is an initial implementation that ignores some differences
with VEN because I lack understanding of what IOS is actually doing
sometimes. These are documented on the WiiBrew article:
https://wiibrew.org/wiki//dev/usb/hid_(v5)
One major difference that this implementation handles is about IDs.
It turns out Nintendo has decided to include the interface number in
the top byte of HIDv5 device IDs, unlike VEN -- even though everything
else about ioctl 1 is otherwise the same!
USBv5 IOS resource managers share most of their code. Some ioctls
are even completely the same! So let's separate the common code
from the VEN specific stuff to make HIDv5 easier to implement.
The descriptor copy code is not actually the same in HIDv4 and VEN,
so it did not make a lot of sense to put it in USB/Common.cpp.
Separate and move it to HIDv4 and VEN.
This cleanup is important because there are even more differences
between HIDv4 and HIDv5.
Fix the device ID struct to reflect the actual structure used by IOS.
It turns out that offset 2 is the internal device index. The reason
that field seemed to be "0x1e - interface_number" is that IOS only
keeps track of 32 devices and always looks for free entries from
the end of the internal array. With each USB interface being exposed
as a separate USBv5 device, "0x1e - interface_number" was mostly
correct... but wrong!
We also made the assumption that the interface number can be
identified from just a USBV5 device ID, which is definitely not true.
VEN (and HID) keep track of the interface number in the internal struct
instead of "reconstructing" it from the device ID (which is normally
not possible if we were generating IDs correctly)
This commit fixes all of these inaccuracies.
This reverts commit 1fc910b3ea,
replacing the old INI setting EFBScale with a new INI setting
called InternalResolution, which has a simpler mapping:
| EFBScale | InternalResolution
----------------- | -------------------- | --------------------
Auto (fractional) | 0 |
Auto (integral) | 1 | 0
1x | 2 | 1
1.5x | 3 |
2x | 4 | 2
2.5x | 5 |
3x | 6 | 3
4x | 7 | 4
5x | 8 | 5
6x | 9 | 6
All the fractional IRs were removed in f090a943.
It is not possible to tell whether DLC contents are supposed to be
present on the NAND or not, because they're treated as "optional".
So this commit changes the NAND check to not consider missing
contents for DLC titles as an issue.
Because the Wii NAND size is finite, mark titles that were installed
only for booting as temporary, and remove them whenever we need to
install another title (to make room). This is exactly what the
System Menu does for temporary SD card title data.
This commit removes the last usage of NANDContentManager in IOS code.
Another cleanup change is that loading ARM (IOS) binaries is now done
by the kernel in the BootIOS syscall, instead of being handled as a
special case in the MIOS code. This is more similar to how console
works and lets us easily extend the same logic to other IOS binaries
in the future, if we decide to actually load them.
This removes the hack that enables directly booting from WADs
without installing them first for the following reasons:
1. It makes the NAND content handling much more complicated than what
it should be and makes future changes like permissions or booting
NAND titles without a WAD more annoying to implement.
Because of this hack, we needed an extra level of abstraction
(NANDContent*) which has to read tons of things from the NAND, even
most of the time it's useless. This in turn forces us to have
caching, which is known to break titles and requires manual cache
invalidations. Annoying and error prone.
2. It prevents the WAD boot code from being easily accurate. With this
change, we can simply reuse the existing launch code, and ask IOS
to launch the title from the NAND.
3. The hack did not work that well since it did not cover a lot of ES
commands. And it works even less since the ES accuracy fixes.
This results in Dolphin returning inconsistent results: a
lot of the ES "DI" commands will just fail because the active title
is not installed on the NAND. uid.sys is not changed, etc.
And I'm not even talking about FS stuff -- where this would still
totally fail, unless we add even more unnecessary hacks.
This is not just theoretical -- the system menu and the Wii Shop are
known to behave strangely because the hack damages the NAND
structure, and we've already had several users report issues.
This commit makes it so WADs are always installed prior to launching.
A future commit will remove any code that was there only for the hack.
The GameCube's sample rate is slightly different due to a hardware bug.
The exact numbers are (54000000 / 1124) for GameCube and (54000000 / 1125)
on Wii. I also modified 32KHz mode. This fixes audio desyncs in several
GameCube games and severe issues in Sonic Mega Collection.
A bunch of changes, looks mainly like bug fixes and code cleanup.
Notable changes:
- `cubeb_get_min_latency`'s signature was changed to take params via
pointer, requiring Dolphin code to be tweaked in two places.
- A fix for kinetiknz/cubeb#320, as reported by @shuffle2
- Fixed build on FreeBSD (kinetiknz/cubeb#344), as contributed by @endrift
Change the repair logic to fix issues more aggressively by deleting bad
titles. This is necessary because of a bug in Dolphin's WAD boot code.
The UI code was updated to inform the user about titles that will be
deleted if they continue a repair, before deleting anything.
Old versions of Dolphin are so broken regarding NAND handling that
we need this to repair common issues and avoid issues with titles
like the System Menu or the Wii Shop.
This isn't an exhaustive check, but this will catch most issues
and offer to fix them automatically (if possible).
The newer title dumpers don't clobber tickets anymore (that's good!),
which means personalised tickets still have the console specific data
used to decrypt the title key in them. Dolphin should ignore that data
when importing WADs, because the title key has already been decrypted,
and we must not try to decrypt it *again*.
There are two special cases that the DSP accelerator handles in a
special way: when the end address is of the form xxxxxxx0 or
xxxxxxx1.
For these two cases, the normal overflow handling doesn't apply.
Instead, the overflow check is different, the ACCOV exception never
fires at all, the predscale register is not updated, reads are not
suspended, and if the end address is 16-byte aligned, the DSP loops
back to start_address + 1 instead of the regular start_address.
When an ACCOV is triggered, the accelerator stops reading back anything
and updating the current address until the YN2 register is set.
This is kept track of internally by the DSP; this state is not exposed
via any register.
However, we need to emulate this behaviour correctly because some
ucodes rely on it (notably AX GC); failure to emulate it will result
in reading past the end and start address for non-looped voices.
When the current address is xxxxxxxf, after doing the standard ADPCM
decoding and incrementing the current address as usual to get the
next address, the DSP will update the predscale register by reading
2 bytes from memory, and add two to get the next address.
This means xxxxxx10 cannot be a current address, as the DSP goes
from 0f to 12 directly.
A more serious issue with the old code is that if the start address
is 16-byte aligned, some samples will always be skipped, even when
that should not be the case.
An easy way to test whether this behaviour is correct is to check
the current address register and the predscale after each read.
Old code:
...
ACCA=00000002, predscale=<value>
ACCA=00000003, predscale=<value>
...
ACCA=0000000f, predscale=<value>
ACCA=00000010, predscale=<another value>
ACCA=00000013, predscale=<another value>
ACCA=00000014, predscale=<another value>
...
New code (and console):
...
ACCA=00000002, predscale=<value>
ACCA=00000003, predscale=<value>
...
ACCA=0000000f, predscale=<value>
ACCA=00000012, predscale=<another value>
ACCA=00000013, predscale=<another value>
...
Slightly cleaner, allows DSP accelerator behaviour to be
added to both HLE and LLE pretty easily, and makes the accelerator
easier to unit test.
I chose to include all accelerator state as private members, and
to expose state that is accessible via registers with getters/setters.
It's more verbose, yes, but it makes it very clear what is part of
the accelerator state and what isn't (e.g. coefs).
This works quite well for registers, since the accelerator can do
whatever it wants internally. For example, the start/end/current
addresses are masked -- having a getter/setter makes it easier to
enforce the mask.
The logic is entirely the same; only the inputs and outputs are
different, so deduplicating makes sense.
This will make fixing accelerator issues easier.
Ideally Common.h wouldn't be a header in the Common library, and instead be renamed to something else, like PlatformCompatibility.h or something, but even then, there's still some things in the header that don't really fall under that label
This moves the version strings out to their own version header that doesn't dump a bunch of other unrelated things into scope, like what Common.h was doing.
This also places them into the Common namespace, as opposed to letting them sit in the global namespace.
Based on hardware tests, masking occurs for the accelerator registers.
This fixes Red Steel and Far Cry Vengeance, which rely on this behavior
when reading back the current playback position from the DSP.
CNTVCT_EL0 is force-enabled on all linux plattforms.
Windows is untested, but as this is the best way to get *any* low
overhead performance counters, they likely use it as well.
Within Cleanup(), it is called at *every* end of the block. This generates bigger code,
but it is the only way to handle blocks with multiple exit nodes.
Since all queues are FIFO data structures, the name wasn't informative
as to why you'd use it over a normal queue. I originally thought it had
something to do with the hardware graphics FIFO.
This renames it using the common acronym SPSC, which stands for
single-producer single-consumer, and is most commonly used to talk about
lock-free data structures, both of which this is.
Prevents resource managers that shouldn't be visible from being exposed
to titles.
This adds a new function to get features for an IOS version, and also
moves the version checks from the modules themselves to VersionInfo.
This hopefully documents some of the differences between IOS better
and should be slightly cleaner than having random version checks.
* IOCTL_WFSI_PREPARE_DEVICE -> IOCTL_WFSI_IMPORT_TITLE_INIT
(equivalent of ES_ImportTitleInit, also the official name)
* IOCTL_WFSI_IMPORT_TITLE -> IOCTL_WFSI_IMPORT_TITLE_CANCEL
(equivalent of ES_ImportTitleCancel)
The class NonCopyable is, like the name says, supposed to disallow
copying. But should it allow moving?
For a long time, NonCopyable used to not allow moving. (It declared
a deleted copy constructor and assigment operator without declaring
a move constructor and assignment operator, making the compiler
implicitly delete the move constructor and assignment operator.)
That's fine if the classes that inherit from NonCopyable don't need
to be movable or if writing the move constructor and assignment
operator by hand is fine, but that's not the case for all classes,
as I discovered when I was working on the DirectoryBlob PR.
Because of that, I decided to make NonCopyable movable in c7602cc,
allowing me to use NonCopyable in DirectoryBlob.h. That was however
an unfortunate decision, because some of the classes that inherit
from NonCopyable have incorrect behavior when moved by default-
generated move constructors and assignment operators, and do not
explicitly delete the move constructors and assignment operators,
relying on NonCopyable being non-movable.
So what can we do about this? There are four solutions that I can
think of:
1. Make NonCopyable non-movable and tell DirectoryBlob to suck it.
2. Keep allowing moving NonCopyable, and expect that classes that
don't support moving will delete the move constructor and
assignment operator manually. Not only is this inconsistent
(having classes disallow copying one way and disallow moving
another way), but deleting the move constructor and assignment
operator manually is too easy to forget compared to how tricky
the resulting problems are.
3. Have one "MovableNonCopyable" and one "NonMovableNonCopyable".
It works, but it feels rather silly...
4. Don't have a NonCopyable class at all. Considering that deleting
the copy constructor and assignment operator only takes two lines
of code, I don't see much of a reason to keep NonCopyable. I
suppose that there was more of a point in having NonCopyable back
in the pre-C++11 days, when it wasn't possible to use "= delete".
I decided to go with the fourth one (like the commit title says).
The implementation of the commit is fairly straight-forward, though
I would like to point out that I skipped adding "= delete" lines
for classes whose only reason for being uncopyable is that they
contain uncopyable classes like File::IOFile and std::unique_ptr,
because the compiler makes such classes uncopyable automatically.
to get bigger, breaking an optimization. This forces the emitter to use a
32bit pointer instead of an 8bit one, fixing the issue at the expense of
efficiency.
Seems like I was wrong that ANDI2R doesn't require a temporary register here.
There is *one* case when the mask won't fit in the ARM AND instruction:
mask = 0xFFFFFFFF
But let's just use MOV instead of AND here for this case...
Makes it easier to turn off general IOS messages that can be
distracting (e.g. /dev/net/ssl being opened hundreds of time...)
without losing the ability to view WFS messages.
Lioncash