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| author | Mike Frysinger <vapier@gentoo.org> | 2023-12-19 20:04:34 -0500 |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2023-12-21 20:16:26 -0500 |
| commit | c0e97c852595b9516d54688643c08918a446f36c (patch) | |
| tree | 3cca7534f3ba674f35d97439f6543c7647cc6571 /sim/common/local.mk | |
| parent | 10df3b929c72245bf363c11d6236637b4dc43cbc (diff) | |
| download | gdb-c0e97c852595b9516d54688643c08918a446f36c.zip gdb-c0e97c852595b9516d54688643c08918a446f36c.tar.gz gdb-c0e97c852595b9516d54688643c08918a446f36c.tar.bz2 | |
sim: common: add $LINENO rewriting support to genmloop scripts
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.
Diffstat (limited to 'sim/common/local.mk')
| -rw-r--r-- | sim/common/local.mk | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/sim/common/local.mk b/sim/common/local.mk index 8124910..6414ad1 100644 --- a/sim/common/local.mk +++ b/sim/common/local.mk @@ -234,6 +234,8 @@ CGEN_GEN_CPU_DESC = \ $(CGEN_ARCHFILE) ignored $$opcfile CGEN_GEN_MLOOP = \ - $(SHELL) $(srccom)/genmloop.sh \ - -shell $(SHELL) \ + $(SHELL) $(srccom)/lineno.sh \ + $(srccom)/genmloop.sh \ + $@.lineno.sh \ + -shell $(SHELL) -awk $(AWK) -lineno $(srccom)/lineno.sh \ -infile $< -outfile-prefix $(@D)/ |