[thirdparty/gcc.git] / gcc / optc-gen.awk

#  Copyright (C) 2003, 2004, 2007, 2008, 2009, 2010, 2011
#  Free Software Foundation, Inc.
#  Contributed by Kelley Cook, June 2004.
#  Original code from Neil Booth, May 2003.
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation; either version 3, or (at your option) any
# later version.
# 
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
# 
# You should have received a copy of the GNU General Public License
# along with this program; see the file COPYING3.  If not see
# <http://www.gnu.org/licenses/>.

# This Awk script reads in the option records generated from 
# opt-gather.awk, combines the flags of duplicate options and generates a
# C file.
#

# This program uses functions from opt-functions.awk and code from
# opt-read.awk.
#
# Usage: awk -f opt-functions.awk -f opt-read.awk -f optc-gen.awk \
#            [-v header_name=header.h] < inputfile > options.c

# Dump that array of options into a C file.
END {
print "/* This file is auto-generated by optc-gen.awk.  */"
print ""
n_headers = split(header_name, headers, " ")
for (i = 1; i <= n_headers; i++)
	print "#include " quote headers[i] quote
print "#include " quote "opts.h" quote
print "#include " quote "intl.h" quote
print ""

if (n_extra_c_includes > 0) {
	for (i = 0; i < n_extra_c_includes; i++) {
		print "#include " quote extra_c_includes[i] quote
	}
	print ""
}

for (i = 0; i < n_enums; i++) {
	name = enum_names[i]
	type = enum_type[name]
	print "static const struct cl_enum_arg cl_enum_" name \
	    "_data[] = "
	print "{"
	print enum_data[name] "  { NULL, 0, 0 }"
	print "};"
	print ""
	print "static void"
	print "cl_enum_" name "_set (void *var, int value)"
	print "{"
	print "  *((" type " *) var) = (" type ") value;"
	print "}"
	print ""
	print "static int"
	print "cl_enum_" name "_get (const void *var)"
	print "{"
	print "  return (int) *((const " type " *) var);"
	print "}"
	print ""
}

print "const struct cl_enum cl_enums[] ="
print "{"
for (i = 0; i < n_enums; i++) {
	name = enum_names[i]
	ehelp = enum_help[name]
	if (ehelp == "")
		ehelp = "NULL"
	else
		ehelp = quote ehelp quote
	unknown_error = enum_unknown_error[name]
	if (unknown_error == "")
		unknown_error = "NULL"
	else
		unknown_error = quote unknown_error quote
	print "  {"
	print "    " ehelp ","
	print "    " unknown_error ","
	print "    cl_enum_" name "_data,"
	print "    sizeof (" enum_type[name] "),"
	print "    cl_enum_" name "_set,"
	print "    cl_enum_" name "_get"
	print "  },"
}
print "};"
print "const unsigned int cl_enums_count = " n_enums ";"
print ""

print "const struct gcc_options global_options_init =\n{"
for (i = 0; i < n_extra_vars; i++) {
	var = extra_vars[i]
	init = extra_vars[i]
	if (var ~ "=" ) {
		sub(".*= *", "", init)
	} else {
		init = "0"
	}
	sub(" *=.*", "", var)
	name = var
	sub("^.*[ *]", "", name)
	sub("\\[.*\\]$", "", name)
	var_seen[name] = 1
	print "  " init ", /* " name " */"
}
for (i = 0; i < n_opts; i++) {
	name = var_name(flags[i]);
	if (name == "")
		continue;

	init = opt_args("Init", flags[i])
	if (init != "") {
		if (name in var_init && var_init[name] != init)
			print "#error multiple initializers for " name
		var_init[name] = init
	}
}
for (i = 0; i < n_opts; i++) {
	name = var_name(flags[i]);
	if (name == "")
		continue;

	if (name in var_seen)
		continue;

	if (name in var_init)
		init = var_init[name]
	else
		init = "0"

	print "  " init ", /* " name " */"

	var_seen[name] = 1;
}
for (i = 0; i < n_opts; i++) {
	name = static_var(opts[i], flags[i]);
	if (name != "") {
		print "  0, /* " name " (private state) */"
		print "#undef x_" name
	}
}
for (i = 0; i < n_opts; i++) {
	if (flag_set_p("SetByCombined", flags[i]))
		print "  false, /* frontend_set_" var_name(flags[i]) " */"
}
print "};"
print ""
print "struct gcc_options global_options;"
print "struct gcc_options global_options_set;"
print ""

print "const char * const lang_names[] =\n{"
for (i = 0; i < n_langs; i++) {
	macros[i] = "CL_" langs[i]
	gsub( "[^" alnum "_]", "X", macros[i] )
	s = substr("         ", length (macros[i]))
	print "  " quote langs[i] quote ","
    }

print "  0\n};\n"
print "const unsigned int cl_options_count = N_OPTS;\n"
print "const unsigned int cl_lang_count = " n_langs ";\n"

print "const struct cl_option cl_options[] =\n{"

j = 0
for (i = 0; i < n_opts; i++) {
	back_chain[i] = "N_OPTS";
	indices[opts[i]] = j;
	# Combine the flags of identical switches.  Switches
	# appear many times if they are handled by many front
	# ends, for example.
	while( i + 1 != n_opts && opts[i] == opts[i + 1] ) {
		flags[i + 1] = flags[i] " " flags[i + 1];
		if (help[i + 1] == "")
			help[i + 1] = help[i]
		else if (help[i] != "" && help[i + 1] != help[i])
			print "warning: multiple different help strings for " \
				opts[i] ":\n\t" help[i] "\n\t" help[i + 1] \
				| "cat 1>&2"
		i++;
		back_chain[i] = "N_OPTS";
		indices[opts[i]] = j;
	}
	j++;
}

for (i = 0; i < n_opts; i++) {
	# With identical flags, pick only the last one.  The
	# earlier loop ensured that it has all flags merged,
	# and a nonempty help text if one of the texts was nonempty.
	while( i + 1 != n_opts && opts[i] == opts[i + 1] ) {
		i++;
	}

	len = length (opts[i]);
	enum = opt_enum(opts[i])

	# If this switch takes joined arguments, back-chain all
	# subsequent switches to it for which it is a prefix.  If
	# a later switch S is a longer prefix of a switch T, T
	# will be back-chained to S in a later iteration of this
	# for() loop, which is what we want.
	if (flag_set_p("Joined.*", flags[i])) {
		for (j = i + 1; j < n_opts; j++) {
			if (substr (opts[j], 1, len) != opts[i])
				break;
			back_chain[j] = enum;
		}
	}

	s = substr("                                  ", length (opts[i]))
	if (i + 1 == n_opts)
		comma = ""

	if (help[i] == "")
		hlp = "0"
	else
		hlp = quote help[i] quote;

	missing_arg_error = opt_args("MissingArgError", flags[i])
	if (missing_arg_error == "")
		missing_arg_error = "0"
	else
		missing_arg_error = quote missing_arg_error quote


	warn_message = opt_args("Warn", flags[i])
	if (warn_message == "")
		warn_message = "0"
	else
		warn_message = quote warn_message quote

	alias_arg = opt_args("Alias", flags[i])
	if (alias_arg == "") {
		if (flag_set_p("Ignore", flags[i]))
			alias_data = "NULL, NULL, OPT_SPECIAL_ignore"
		else
			alias_data = "NULL, NULL, N_OPTS"
	} else {
		alias_opt = nth_arg(0, alias_arg)
		alias_posarg = nth_arg(1, alias_arg)
		alias_negarg = nth_arg(2, alias_arg)

		if (var_ref(opts[i], flags[i]) != "-1")
			print "#error Alias setting variable"

		if (alias_posarg != "" && alias_negarg == "") {
			if (!flag_set_p("RejectNegative", flags[i]) \
			    && opts[i] ~ "^[Wfm]")
				print "#error Alias with single argument " \
					"allowing negative form"
		}
		if (alias_posarg != "" \
		    && flag_set_p("NegativeAlias", flags[i])) {
			print "#error Alias with multiple arguments " \
				"used with NegativeAlias"
		}

		alias_opt = opt_enum(alias_opt)
		if (alias_posarg == "")
			alias_posarg = "NULL"
		else
			alias_posarg = quote alias_posarg quote
		if (alias_negarg == "")
			alias_negarg = "NULL"
		else
			alias_negarg = quote alias_negarg quote
		alias_data = alias_posarg ", " alias_negarg ", " alias_opt
	}

	neg = opt_args("Negative", flags[i]);
	if (neg != "")
		idx = indices[neg]
	else {
		if (flag_set_p("RejectNegative", flags[i]))
			idx = -1;
		else {
			if (opts[i] ~ "^[Wfm]")
				idx = indices[opts[i]];
			else
				idx = -1;
		}
	}
	# Split the printf after %u to work around an ia64-hp-hpux11.23
	# awk bug.
	printf("  { %c-%s%c,\n    %s,\n    %s,\n    %s,\n    %s, %s, %u,",
	       quote, opts[i], quote, hlp, missing_arg_error, warn_message,
	       alias_data, back_chain[i], len)
	printf(" %d,\n", idx)
	condition = opt_args("Condition", flags[i])
	cl_flags = switch_flags(flags[i])
	cl_bit_fields = switch_bit_fields(flags[i])
	cl_zero_bit_fields = switch_bit_fields("")
	if (condition != "")
		printf("#if %s\n" \
		       "    %s,\n" \
		       "    0, %s,\n" \
		       "#else\n" \
		       "    0,\n" \
		       "    1 /* Disabled.  */, %s,\n" \
		       "#endif\n",
		       condition, cl_flags, cl_bit_fields, cl_zero_bit_fields)
	else
		printf("    %s,\n" \
		       "    0, %s,\n",
		       cl_flags, cl_bit_fields)
	printf("    %s, %s }%s\n", var_ref(opts[i], flags[i]),
	       var_set(flags[i]), comma)
}

print "};"

}
Commit	Line	Data
ecee1b29	1	# Copyright (C) 2003, 2004, 2007, 2008, 2009, 2010, 2011
7cf0dbf3	2	# Free Software Foundation, Inc.
e8b212b8	3	# Contributed by Kelley Cook, June 2004.
	4	# Original code from Neil Booth, May 2003.
	5	#
	6	# This program is free software; you can redistribute it and/or modify it
	7	# under the terms of the GNU General Public License as published by the
8c4c00c1	8	# Free Software Foundation; either version 3, or (at your option) any
e8b212b8	9	# later version.
	10	#
	11	# This program is distributed in the hope that it will be useful,
	12	# but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	# GNU General Public License for more details.
	15	#
	16	# You should have received a copy of the GNU General Public License
8c4c00c1	17	# along with this program; see the file COPYING3. If not see
8c4c00c1	18	# <http://www.gnu.org/licenses/>.
e8b212b8	19
e8b212b8	20	# This Awk script reads in the option records generated from
63433b97	21	# opt-gather.awk, combines the flags of duplicate options and generates a
e8b212b8	22	# C file.
e8b212b8	23	#
1e127302	24
	25	# This program uses functions from opt-functions.awk and code from
	26	# opt-read.awk.
e8b212b8	27	#
1e127302	28	# Usage: awk -f opt-functions.awk -f opt-read.awk -f optc-gen.awk \
e8b212b8	29	# [-v header_name=header.h] < inputfile > options.c
e8b212b8	30
e8b212b8	31	# Dump that array of options into a C file.
e8b212b8	32	END {
30b0f428	33	print "/* This file is auto-generated by optc-gen.awk. */"
e8b212b8	34	print ""
5c5ccba2	35	n_headers = split(header_name, headers, " ")
	36	for (i = 1; i <= n_headers; i++)
	37	print "#include " quote headers[i] quote
e8b212b8	38	print "#include " quote "opts.h" quote
6ce616df	39	print "#include " quote "intl.h" quote
e8b212b8	40	print ""
e8b212b8	41
755fa783	42	if (n_extra_c_includes > 0) {
	43	for (i = 0; i < n_extra_c_includes; i++) {
	44	print "#include " quote extra_c_includes[i] quote
	45	}
	46	print ""
	47	}
	48
d62a5950	49	for (i = 0; i < n_enums; i++) {
	50	name = enum_names[i]
	51	type = enum_type[name]
	52	print "static const struct cl_enum_arg cl_enum_" name \
	53	"_data[] = "
	54	print "{"
	55	print enum_data[name] " { NULL, 0, 0 }"
	56	print "};"
	57	print ""
	58	print "static void"
	59	print "cl_enum_" name "_set (void *var, int value)"
	60	print "{"
	61	print " ((" type " ) var) = (" type ") value;"
	62	print "}"
	63	print ""
	64	print "static int"
	65	print "cl_enum_" name "_get (const void *var)"
	66	print "{"
	67	print " return (int) ((const " type " ) var);"
	68	print "}"
	69	print ""
	70	}
	71
	72	print "const struct cl_enum cl_enums[] ="
	73	print "{"
	74	for (i = 0; i < n_enums; i++) {
	75	name = enum_names[i]
	76	ehelp = enum_help[name]
	77	if (ehelp == "")
	78	ehelp = "NULL"
	79	else
	80	ehelp = quote ehelp quote
	81	unknown_error = enum_unknown_error[name]
	82	if (unknown_error == "")
	83	unknown_error = "NULL"
	84	else
	85	unknown_error = quote unknown_error quote
	86	print " {"
	87	print " " ehelp ","
	88	print " " unknown_error ","
	89	print " cl_enum_" name "_data,"
	90	print " sizeof (" enum_type[name] "),"
	91	print " cl_enum_" name "_set,"
	92	print " cl_enum_" name "_get"
	93	print " },"
	94	}
	95	print "};"
	96	print "const unsigned int cl_enums_count = " n_enums ";"
	97	print ""
	98
f3f006ad	99	print "const struct gcc_options global_options_init =\n{"
0f8defe5	100	for (i = 0; i < n_extra_vars; i++) {
5ae82d58	101	var = extra_vars[i]
	102	init = extra_vars[i]
	103	if (var ~ "=" ) {
	104	sub(".= ", "", init)
5ae82d58	105	} else {
	106	init = "0"
	107	}
c3be4b75	108	sub(" =.", "", var)
	109	name = var
	110	sub("^.[ ]", "", name)
	111	sub("\\[.*\\]$", "", name)
	112	var_seen[name] = 1
	113	print " " init ", /* " name " */"
0f8defe5	114	}
e8b212b8	115	for (i = 0; i < n_opts; i++) {
	116	name = var_name(flags[i]);
	117	if (name == "")
	118	continue;
	119
5ae82d58	120	init = opt_args("Init", flags[i])
	121	if (init != "") {
	122	if (name in var_init && var_init[name] != init)
	123	print "#error multiple initializers for " name
	124	var_init[name] = init
a1baa5f1	125	}
5ae82d58	126	}
	127	for (i = 0; i < n_opts; i++) {
	128	name = var_name(flags[i]);
	129	if (name == "")
	130	continue;
	131
	132	if (name in var_seen)
	133	continue;
	134
	135	if (name in var_init)
	136	init = var_init[name]
	137	else
	138	init = "0"
a150399d	139
5ae82d58	140	print " " init ", /* " name " */"
c5e839cb	141
c5e839cb	142	var_seen[name] = 1;
a150399d	143	}
d6907cfa	144	for (i = 0; i < n_opts; i++) {
d6907cfa	145	name = static_var(opts[i], flags[i]);
2c5d2e39	146	if (name != "") {
	147	print " 0, /* " name " (private state) */"
	148	print "#undef x_" name
	149	}
d6907cfa	150	}
ecee1b29	151	for (i = 0; i < n_opts; i++) {
	152	if (flag_set_p("SetByCombined", flags[i]))
	153	print " false, /* frontend_set_" var_name(flags[i]) " */"
	154	}
2c5d2e39	155	print "};"
d6907cfa	156	print ""
f3f006ad	157	print "struct gcc_options global_options;"
f83b64ca	158	print "struct gcc_options global_options_set;"
f83b64ca	159	print ""
e8b212b8	160
	161	print "const char * const lang_names[] =\n{"
	162	for (i = 0; i < n_langs; i++) {
	163	macros[i] = "CL_" langs[i]
ca40ed4b	164	gsub( "[^" alnum "_]", "X", macros[i] )
e8b212b8	165	s = substr(" ", length (macros[i]))
	166	print " " quote langs[i] quote ","
	167	}
	168
	169	print " 0\n};\n"
	170	print "const unsigned int cl_options_count = N_OPTS;\n"
87c75316	171	print "const unsigned int cl_lang_count = " n_langs ";\n"
e8b212b8	172
	173	print "const struct cl_option cl_options[] =\n{"
	174
a1baa5f1	175	j = 0
a1baa5f1	176	for (i = 0; i < n_opts; i++) {
e8b212b8	177	back_chain[i] = "N_OPTS";
a1baa5f1	178	indices[opts[i]] = j;
	179	# Combine the flags of identical switches. Switches
	180	# appear many times if they are handled by many front
	181	# ends, for example.
	182	while( i + 1 != n_opts && opts[i] == opts[i + 1] ) {
	183	flags[i + 1] = flags[i] " " flags[i + 1];
e6a03973	184	if (help[i + 1] == "")
e6a03973	185	help[i + 1] = help[i]
0863a8f4	186	else if (help[i] != "" && help[i + 1] != help[i])
	187	print "warning: multiple different help strings for " \
	188	opts[i] ":\n\t" help[i] "\n\t" help[i + 1] \
	189	\| "cat 1>&2"
a1baa5f1	190	i++;
	191	back_chain[i] = "N_OPTS";
	192	indices[opts[i]] = j;
	193	}
	194	j++;
	195	}
e8b212b8	196
d39ef3aa	197	for (i = 0; i < n_opts; i++) {
e6a03973	198	# With identical flags, pick only the last one. The
	199	# earlier loop ensured that it has all flags merged,
	200	# and a nonempty help text if one of the texts was nonempty.
d39ef3aa	201	while( i + 1 != n_opts && opts[i] == opts[i + 1] ) {
d39ef3aa	202	i++;
d39ef3aa	203	}
e8b212b8	204
d39ef3aa	205	len = length (opts[i]);
d4c7816a	206	enum = opt_enum(opts[i])
d39ef3aa	207
	208	# If this switch takes joined arguments, back-chain all
	209	# subsequent switches to it for which it is a prefix. If
	210	# a later switch S is a longer prefix of a switch T, T
	211	# will be back-chained to S in a later iteration of this
	212	# for() loop, which is what we want.
	213	if (flag_set_p("Joined.*", flags[i])) {
	214	for (j = i + 1; j < n_opts; j++) {
	215	if (substr (opts[j], 1, len) != opts[i])
	216	break;
	217	back_chain[j] = enum;
e8b212b8	218	}
d39ef3aa	219	}
e8b212b8	220
d39ef3aa	221	s = substr(" ", length (opts[i]))
	222	if (i + 1 == n_opts)
	223	comma = ""
e8b212b8	224
d39ef3aa	225	if (help[i] == "")
	226	hlp = "0"
	227	else
	228	hlp = quote help[i] quote;
e8b212b8	229
fecf9011	230	missing_arg_error = opt_args("MissingArgError", flags[i])
	231	if (missing_arg_error == "")
	232	missing_arg_error = "0"
	233	else
	234	missing_arg_error = quote missing_arg_error quote
	235
3b0273a1	236
	237	warn_message = opt_args("Warn", flags[i])
	238	if (warn_message == "")
	239	warn_message = "0"
	240	else
	241	warn_message = quote warn_message quote
	242
67089c6b	243	alias_arg = opt_args("Alias", flags[i])
67089c6b	244	if (alias_arg == "") {
3b0273a1	245	if (flag_set_p("Ignore", flags[i]))
	246	alias_data = "NULL, NULL, OPT_SPECIAL_ignore"
	247	else
	248	alias_data = "NULL, NULL, N_OPTS"
67089c6b	249	} else {
	250	alias_opt = nth_arg(0, alias_arg)
	251	alias_posarg = nth_arg(1, alias_arg)
	252	alias_negarg = nth_arg(2, alias_arg)
	253
2c5d2e39	254	if (var_ref(opts[i], flags[i]) != "-1")
67089c6b	255	print "#error Alias setting variable"
	256
	257	if (alias_posarg != "" && alias_negarg == "") {
	258	if (!flag_set_p("RejectNegative", flags[i]) \
	259	&& opts[i] ~ "^[Wfm]")
	260	print "#error Alias with single argument " \
	261	"allowing negative form"
	262	}
4e775b8e	263	if (alias_posarg != "" \
	264	&& flag_set_p("NegativeAlias", flags[i])) {
	265	print "#error Alias with multiple arguments " \
	266	"used with NegativeAlias"
	267	}
67089c6b	268
	269	alias_opt = opt_enum(alias_opt)
	270	if (alias_posarg == "")
	271	alias_posarg = "NULL"
	272	else
	273	alias_posarg = quote alias_posarg quote
	274	if (alias_negarg == "")
	275	alias_negarg = "NULL"
	276	else
	277	alias_negarg = quote alias_negarg quote
	278	alias_data = alias_posarg ", " alias_negarg ", " alias_opt
	279	}
	280
a1baa5f1	281	neg = opt_args("Negative", flags[i]);
	282	if (neg != "")
	283	idx = indices[neg]
	284	else {
	285	if (flag_set_p("RejectNegative", flags[i]))
	286	idx = -1;
	287	else {
	288	if (opts[i] ~ "^[Wfm]")
	289	idx = indices[opts[i]];
	290	else
	291	idx = -1;
	292	}
	293	}
13c2c394	294	# Split the printf after %u to work around an ia64-hp-hpux11.23
13c2c394	295	# awk bug.
3b0273a1	296	printf(" { %c-%s%c,\n %s,\n %s,\n %s,\n %s, %s, %u,",
3b0273a1	297	quote, opts[i], quote, hlp, missing_arg_error, warn_message,
67089c6b	298	alias_data, back_chain[i], len)
13c2c394	299	printf(" %d,\n", idx)
5c5ccba2	300	condition = opt_args("Condition", flags[i])
5c5ccba2	301	cl_flags = switch_flags(flags[i])
ec840af4	302	cl_bit_fields = switch_bit_fields(flags[i])
ec840af4	303	cl_zero_bit_fields = switch_bit_fields("")
5c5ccba2	304	if (condition != "")
	305	printf("#if %s\n" \
	306	" %s,\n" \
ec840af4	307	" 0, %s,\n" \
5c5ccba2	308	"#else\n" \
ec840af4	309	" 0,\n" \
ec840af4	310	" 1 /* Disabled. */, %s,\n" \
5c5ccba2	311	"#endif\n",
ec840af4	312	condition, cl_flags, cl_bit_fields, cl_zero_bit_fields)
5c5ccba2	313	else
ec840af4	314	printf(" %s,\n" \
	315	" 0, %s,\n",
	316	cl_flags, cl_bit_fields)
d6907cfa	317	printf(" %s, %s }%s\n", var_ref(opts[i], flags[i]),
d6907cfa	318	var_set(flags[i]), comma)
e8b212b8	319	}
	320
	321	print "};"
46f8e3b0	322
e8b212b8	323	}