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userspace-header-gen: Special case for Yacc / Lex.

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Some variables generated by Yacc / Lex need a special treatment. That
had been done by manual editing of the generated headers in the past.
This patch integrate these changes into the generator.
This commit is contained in:
Christian Mauderer 2018-06-13 15:04:47 +02:00
parent 9ea8664ba2
commit 879eaa7c1a
1 changed files with 31 additions and 1 deletions
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32
userspace-header-gen.py
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@ -81,6 +81,25 @@ class HeaderGenCU:
self._rtems_port_names.append("_Linker_set_bsd_prog_%s_end" % progname)
self._rtems_port_names.append("rtems_bsd_command_%s" % progname)
self._filter_special_vars = []
# Take some special care for some yacc variables. This matches the yyval
# and yylval. These two always make trouble in the generated headers.
# yyval is initialized by Yacc generated code so it's not
# necessary to move them into the copy back region. yylval is used only
# for transporting a value. It will be set when used.
self._filter_special_vars.append({
"re":re.compile('extern YYSTYPE .*val'),
"reason":"Lex / Yacc variable initialized by generated code",
"action":"no_section"
})
# Lex generates an external variable that shouldn't be extern. Move it
# to the current data header file.
self._filter_special_vars.append({
"re":re.compile('extern yy_size_t .*len'),
"reason":"Lex adds an extern to this variable that is not necessary.",
"action":"ignore_extern"
})
self._err = err
self._verbose = verbose
self._cu = cu
@ -381,6 +400,17 @@ class HeaderGenCU:
var_with_type = "extern " + var_with_type
outfile = glob_data_out
for flt in self._filter_special_vars:
if flt["re"].match(var_with_type) is not None:
if flt["action"] == "no_section":
self._err.write('Don\'t put "%s" into section. Reason: %s.\n' % \
(var_with_type, flt["reason"]))
outfile = None
if flt["action"] == "ignore_extern":
self._err.write('Ignore extern of variable "%s". Reason: %s.\n' % \
(var_with_type, flt["reason"]))
outfile = data_out
# write output
if self._verbose >= VERBOSE_SOME:
if not is_function:
@ -389,7 +419,7 @@ class HeaderGenCU:
else:
self._err.write('Found a function "%s" at %s (DIE offset %s); extern: %r\n' % \
(varname, var_decl, child.offset, is_extern))
if not is_function:
if (not is_function) and (outfile is not None):
outfile.write("RTEMS_LINKER_RWSET_CONTENT(bsd_prog_%s, %s);\n" % \
(self._progname, var_with_type))
if is_extern: