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# 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 "#include " quote "insn-attr-common.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 "};"
}
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