This was only used in commented out code, which is now removed
as well. In that code, it was used to set the function to `GXcopy`,
but it would already have been that as that's the only thing
we set function to.
This also lets us remove the `gcv` code in `xcursor.c`, since
we no longer need those values there.
`EXTA` and `PENDIN` are not POSIX, so let's not use them.
Make notes that the baud rate constant mapping comes from DLTTY
and add comments explaining the holes.
We no longer need to run a separate peephole optimization pass over the
compiler generated or hand-coded assembler for SunOS3 and SunOS4 on 68K or SPARC
We remove the preprocessor symbols and code controlled by them
SUN4_OS4_IL
SUN3_OS3_IL
SUN3_OS4_IL
and SUN3_OS3_OR_OS4_IL
This removes a bit of the debug info printing, but other than
that, is pretty close to what it was before.
We also now build it in both the make and cmake build systems.
This code has not worked for a long time. Most systems now maintain
the password entries so that a password is not accessible through the
getpwent() interface. The SUBR that calls this interface may be
removed at a future time.
In the old code (prior to b234064d), this was:
```
LispReadFds &= ~(1 << LispWindowFd);
```
This was inadvertently converted to `FD_SET`, but should have
been `FD_CLR`.
* Correct signedness of 2nd parameter of lispcmp().
* Be clear that comparison of characters in bytecmp is unsigned since GETBYTE returns unsigned char.
* Make bytecmp() and lispcmp() helper functions static and removed from mkatomdefs.h.
* If no BYTESWAP we need to include <string.h> for memcmp()
* Use (uint8_t) rather than (unsigned char) in bytecmp when comparing to GETBYTE()
Previously, we had a global `optable`, an alias to it, `table`,
and code to initialize it within `dispatch()`. This code would
initialize the whole thing to either `op_ufn` or `native_check`
and then fill in the entries for the individual opcodes.
Now, we have a function-static `optable` which is statically
initialized and placed (by the compiler) into read-only storage.
This eliminates having generated code within `dispatch()` that
initializes it.
Additionally, it was previously 512 elements long with the second
half of it being all `native_check` entries. We index it with a
byte though, so we only need 256 entries, and we can lose the
`native_check` stuff.
Without those, it wasn't including `devif.h`, which is where
we define `min` and `max`. I make an assumption here that any
new display would be using the current display device support
code.
This was checking that neither `DOS` nor `XWINDOW` were defined,
but this needs a more specific flag for this feature so that it
doesn't get enabled when `!DOS && !XWINDOW`.
Convert ERROR_EXIT, TIMER_EXIT, and WARN to "do {} while (0)" style and
fix a few usage points that were missing trailing semi-colons.
Remove unused typedef for CFuncPtr.
This code is all currently set up to be used if `COLOR` is
defined.
If we were to start supporting color under X11, this would
have to change, but so would much of the rest of the file.
This no longer had anything to do with profiling and was
only doing some defines for the switch case block addresses,
which we no longer need since there's no longer optional
asm generated for them.
This feature was controlled by the compilation flag `OPDISP`
which would enable some bits of assembler on the x86 (ISC or DOS)
or some other specialized code on SPARC. On SPARC hardware, there
was a special compilation process that would preprocess the code
and generate dispatch tables.
We do this now when this feature is enabled using gcc's computed
gotos feature. This is available in clang and some other compilers.
Notably, it isn't present in Visual Studio.
This doesn't decrease our portability at all as this feature is
optional and it replaces specialized assembler code with C using
compiler extensions (making it cross-platform).
In doing this, we've removed a bunch of related code, however,
it is likely that other pieces yet remain and will be removed
in subsequent commits as we clean things up and refine them.
This feature remains disabled by default for now.
* Use gcc / clang overflow builtins.
This avoids expensive checks for overflow that employ undefined
behavior.
This is a step along the way towards replacing the old hand-written
assembler that did the same thing in terms of using the CPU's
overflow detection.
* Remove unimplemented SPARC asm for multiplication, divide, and remainder.
This wasn't implemented before, and for multiplication, it is now
implemented for gcc and friends using overflow detection.
* Remove USE_INLINE_ARITH.
Now that we have the compiler built-ins for detecting overflow,
we don't need custom assembly for it for each platform.
For now, we keep, but still don't use, the code that do a hot
path through the dispatch loop for some math. This code isn't
actually running or in use, but it is separate from how the
other inline arithmetic was being performed. These are the
`fast_op_*` functions that are implemented in assembler.
In commit 6f7ec059bc763d49c753adea70d5cc337f9e353c, we removed
some dead stores. This broke compilation when `STACKCHECK` was
enabled.
ClosesInterlisp/medley#162.
We now can handle these via `inc/maiko/platform.h` and the
constants defined there.
This doesn't change `OS5` for Solaris yet as that's a much wider
set of changes.
By adding `0.0` and not `0.0f` and by calling `fmod()` rather than
`fmodf()`, we were unintentionally coercing the value from a
`float` to a `double`.
This resulted in x86_64 assembler like this:
```
cvtss2sd %xmm0,%xmm0
cvtss2sd %xmm1,%xmm1
callq 403340 <fmod@plt>
cvtsd2ss %xmm0,%xmm0
```
which is now:
```
callq 403360 <fmodf@plt>
```
And for the `N_OP_equal` change:
```
cvtss2sd %xmm0,%xmm0
xorpd %xmm2,%xmm2
addsd %xmm2,%xmm0
cvtss2sd %xmm1,%xmm1
addsd %xmm2,%xmm1
xor %ecx,%ecx
ucomisd %xmm1,%xmm0
```
is now:
```
xorps %xmm2,%xmm2
addss %xmm2,%xmm0
addss %xmm2,%xmm1
xor %ecx,%ecx
ucomiss %xmm1,%xmm0
```
(Note `ss` rather than `sd`, along with the missing `cvtss2sd` calls.)
This wasn't actually hooked up any more, so it was pretty much
all dead code. The handling of this in the command line options
is gone.
In `bin/makefile-tail`, `DEVFILES` and `LIBFILES` became identical, so
`DEVFILES` went away.
