The generated mloop files can trigger compile time warnings. It can
be difficult to see/understand where the original code is coming from
as all the diagnostics point to the generated output. Using #line
pragmas, we can point people to the original source files.
Unfortunately, this code is written in POSIX shell, and that lacks
support for line number tracking. The $LINENO variable, even when
available, can just be plain wrong. For example, when using dash
and subshells, $LINENO can end up having negative values. Add a
wrapper script that will uses awk to rewrite the $LINENO variable
to the right value to avoid all that.
Basically lineno.sh takes an input script, rewrites all uses of
$LINENO into the actual line number (and $0 into the original file
name), and then executes the temporary script.
This commit doesn't actually add #line pragmas to any files. That
comes next.
Replace some fall through comments with the attribute, and add some
default abort calls when the compiler can't figure out that the set
of values were already fully enumerated in the switch statement.
All funcs already call other funcs that don't return. The mips port is
the only exception because its generic exception handler can return in
the case of normal exceptions. So while the exceptions its signal handler
triggers doesn't return, we can't express that conditional logic. So add
some useless abort calls to make the compiler happy.
The compiler pointed out that we're testing LAST_TIMER_REG and
LAST_COUNTER which are the same value ... and that's because we
set LAST_TIMER_REG to the wrong register. Fix the typo.
The compiler pointed out we checked AZ twice. Sort by name to avoid
that in the future, and to make it clearer that we have coverage of
all the bits. And add the bits we were missing.
The order here doesn't matter as it's just turning a pointer into a
human readable string when store tracing is enabled.
The scache vars aren't used by ports in the pbb & fast codepaths,
nor are they documented as inputs to the callbacks, so delete them
to avoid unused variable compiler warnings.
Pull out the common parts of the genmloop invocation into the common
code. This will make it easier to add more, and make the per-port
differences a little more obvious.
Fix one minor pointer-sign warning to enable warnings in general
for this file. Reading the data as signed and then returning it
as unsigned should be functionally the same in this case.
