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If the counter for LOOP instruction is provided by a register with
value zero, then the instruction must cause a PC jump directly to the
loop end. But in that particular case simulator must not initialize
its internal loop variables, because loop body will not be executed.
Instead, simulator must obtain the loop's end address directly from
the LOOP instruction.
Signed-off-by: Dimitar Dimitrov <dimitar@dinux.eu>
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Use proper %p to printf a pointer instead of casting it to long and
using 0x%lx. It's cleaner, more correct, and doesn't break on LLP64.
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Other arches use the .dc extension for the instruction decode table.
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The parser for boolean rules fails to skip over the , separator in
the options which makes it hang forever. No dc files in the tree
use boolean rules atm which is why no one noticed.
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... and fix the legitimate bug that it catches.
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To make it clear this is an input to the igen tool, rename it with an
igen extension. This matches the other files in the ppc dir (altivec
& e500 igen files), and the other igen ports (mips, mn10300, v850).
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Support for these files was dropped almost 30 years ago, but the ppc
arch was missed. Clean that up now too.
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Nothing passes this to dgen, and even if it did, nothing would happen
because the generated spreg.[ch] files don't include any references
back to the original data table. So drop it to simplify.
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Since we know we'll return 0 by default, we don't have to output case
statements for readonly or length fields whose values are also zero.
This is the most common case by far and thus generates a much smaller
switch table in the end.
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Instead of writing:
case 1:
return 1;
case 2:
return 1;
...etc...
Output a single return so we get:
case 1:
case 2:
case ...
return 1;
This saves ~100 lines of code. Hopefully the compiler was already
smart enough to optimize to the same code, but if not, this probably
helps there too :).
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This saves a single line for the same result. By itself, it's not
interesting, but we can further optimize the generated output and
completely omit the switch table in some cases. Which we'll do in
follow up commits.
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This internal table is only ever read, so constify it.
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The error() function expects a trailing newline in its message.
Most callers do this already, so adding it to the few that don't.
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When merging ppc configure checks into the top-level, these 2 funcs
were accidentally dropped (probably due to incorrect resolution of
conflicts). Restore them since the ppc code utilizes them both.
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This controls only one thing: how to call mkdir(). The gnulib code
already has a mkdir module that provides this exact logic for us, so
punt the code entirely.
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This macro expansion was missing a set of outer-most parenthesis which
some compilers would complain about depending on how the macro is used.
This is just standard good macro hygiene too.
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We've never run these helper programs directly. The igen program
includes the relevant source files directly and runs the code that
way. So stop wasting developer CPU time linking programs that are
never run. We leave the rules in place for people who need to test
and debug the specific bits of code every now & then.
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The intention of this code seems to be to indicate that this insn
should not be used and produces undefined behavior, so instead of
setting registers to bogus values, call Unpredictable. This fixes
build warnings due to 32-bit/64-bit type conversions, and outputs
a log message for users at runtime instead of silent corruption.
Bug: https://sourceware.org/PR29276
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Previous commit in here forgot to include this.
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We've been using this only to set the default word size to 32. We
can easily move this into the makefile via a -D compiler flag and
clean up the build logic quite a bit.
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We've been using this only to set the default word size to 32. We
can easily move this into the makefile via a -D compiler flag and
clean up the build logic quite a bit.
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We've been using this only to set the default word size to 32. We
can easily move this into the makefile via a -D compiler flag and
clean up the build logic quite a bit.
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We've been using this only to set the default word size to 64. We
can easily move this into the makefile via a -D compiler flag and
clean up the build logic quite a bit.
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We've been using this only to set the default word size to 32-vs-64
based on the $target. We can easily merge this with the top-level
configure script to clean things up a bit.
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This was being skipped for ports that had a recursive configure,
but we want it for them too.
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The install code was using $SUBDIRS to track all enabled arches. This
works, but isn't great if we want to add a subdir that isn't an arch
port, or as we merge the subdirs into the top-level. Create a new var
explicitly to track the list of enabled arches instead.
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This doesn't matter right now, but it will as we add more flags to
the recursive make step to pass state down.
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This was needed when the install step was run in subdirs, but now
that we process that entirely in the top-level, we don't need to
pass this down, so drop it.
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Now that we link programs in the top dir instead of the arch subdir,
update the readline library path to be relative to the top dir.
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Now that we use libtool to link, we have to use it to install instead
of keeping the manual logic so we don't install wrapper shell scripts.
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Automake will run each subdir individually before moving on to the next
one. This means that the linking phase, a single threaded process, will
not run in parallel with anything else. When we have to link ~32 ports,
that's 32 link steps that don't take advantage of parallel systems. On
my really old 4-core system, this cuts a multi-target build from ~60 sec
to ~30 sec. We eventually want to move all compile+link steps to this
common dir anyways, so might as well move linking now for a nice speedup.
We use noinst_PROGRAMS instead of bin_PROGRAMS because we're taking care
of the install ourselves rather than letting automake process it.
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This never worked before, but adding it to the common top-level dir
is pretty easy to do now that we're unified.
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We still have to maintain custom install rules due to how we rename
arch-specific files with an arch prefix in their name, but we can at
least unify the logic in the common dir.
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This is only used by `make check`, so we can move it out of the
default build too.
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This matches what we do with targets already.
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This hasn't been used since the refactor way back in commit
f872d0d643968c1101bb8c07b252edd54f626da2 ("Only enable H/W
on some mips targets."), so punt it.
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We use uppercase for other variables, and are already turning it to
uppercase in the arch-subdir.mk, so convert it in the configure step.
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Nothing in the tree checks this option, or has checked for decades.
The pre-cvs-import ChangeLog suggests this was added & removed back
then, but can't be sure as that history doesn't exist in the VCS.
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Nothing checks this define anywhere, so drop all the logic. We don't
want this to be a configure option in the first place as all such usage
should be automatic & following proper types.
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This has only ever had a single option that's enabled by default.
The objects it adds are pretty small and don't add overhead at
runtime if it isn't used, so just enable it all the time to make
the build code simpler.
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This is only needed for CGEN ports which RX isn't, so drop it.
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These manual settings were necessary when we weren't doing automatic
header dependency tracking. That was changed a while ago, and we use
automake now to do it all for us. As a result, many of these vars
aren't even referenced anymore.
Further, some of the source file generation (e.g. .c files, or igen,
or cgen outputs) were moved to the common automake build, and it takes
care of dependency tracking for us with the object files.
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Since we use AC_SEARCH_LIBS to find dlopen, we don't need to hardcode
-ldl when using SDL ourselves.
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We have configure tests for this in the top-level configure script
to link this when necessary, so we don't need to explicitly list it
for specific ports.
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With more C libraries moving functions entirely into the main -lc,
change the AC_CHECK_LIB calls to AC_SEARCH_LIBS so we look in there
first and avoid extra linkage when possible.
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COMMON_LIBS is set to $(LIBS), and CONFIG_LIBS is set to that plus
@LIBS@. This leds to the values being used twice. Inline the
CONFIG_LIBS variable without @LIBS@ since it's used only once.
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Now that we use libtool to link, we don't need to duplicate all the
libs that bfd itself uses. This simplifies the configure & Makefile.
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