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# Copyright (C) 2003-2020 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 header 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 opth-gen.awk \
# < inputfile > options.h
# Dump out an enumeration into a .h file.
# Combine the flags of duplicate options.
END {
print "/* This file is auto-generated by opth-gen.awk. */"
print ""
print "#ifndef OPTIONS_H"
print "#define OPTIONS_H"
print ""
print "#include \"flag-types.h\""
print ""
if (n_extra_h_includes > 0) {
for (i = 0; i < n_extra_h_includes; i++) {
print "#include " quote extra_h_includes[i] quote
}
print ""
}
print "#if !defined(IN_LIBGCC2) && !defined(IN_TARGET_LIBS) && !defined(IN_RTS)"
print "#ifndef GENERATOR_FILE"
print "#if !defined(IN_LIBGCC2) && !defined(IN_TARGET_LIBS)"
print "struct GTY(()) gcc_options"
print "#else"
print "struct gcc_options"
print "#endif"
print "{"
print "#endif"
for (i = 0; i < n_extra_vars; i++) {
var = extra_vars[i]
sub(" *=.*", "", var)
orig_var = var
name = var
type = var
type_after = var
sub("^.*[ *]", "", name)
sub("\\[.*\\]$", "", name)
sub("\\[.*\\]$", "", type)
sub(" *" name "$", "", type)
sub("^.*" name, "", type_after)
var_seen[name] = 1
print "#ifdef GENERATOR_FILE"
print "extern " orig_var ";"
print "#else"
print " " type " x_" name type_after ";"
print "#define " name " global_options.x_" name
print "#endif"
}
for (i = 0; i < n_opts; i++) {
if (flag_set_p("Save", flags[i]))
have_save = 1;
name = var_name(flags[i]);
if (name == "")
continue;
if (name in var_seen)
continue;
var_seen[name] = 1;
print "#ifdef GENERATOR_FILE"
print "extern " var_type(flags[i]) name ";"
print "#else"
print " " var_type(flags[i]) "x_" name ";"
print "#define " name " global_options.x_" name
print "#endif"
}
for (i = 0; i < n_opts; i++) {
name = static_var(opts[i], flags[i]);
if (name != "") {
print "#ifndef GENERATOR_FILE"
print " " var_type(flags[i]) "x_" name ";"
print "#define x_" name " do_not_use"
print "#endif"
}
}
for (i = 0; i < n_opts; i++) {
if (flag_set_p("SetByCombined", flags[i])) {
print "#ifndef GENERATOR_FILE"
print " bool frontend_set_" var_name(flags[i]) ";"
print "#endif"
}
}
print "#ifndef GENERATOR_FILE"
print "};"
print "extern struct gcc_options global_options;"
print "extern const struct gcc_options global_options_init;"
print "extern struct gcc_options global_options_set;"
print "#define target_flags_explicit global_options_set.x_target_flags"
print "#endif"
print "#endif"
print ""
# All of the optimization switches gathered together so they can be saved and restored.
# This will allow attribute((cold)) to turn on space optimization.
# Change the type of normal switches from int to unsigned char to save space.
# Also, order the structure so that pointer fields occur first, then int
# fields, and then char fields to provide the best packing.
print "#if !defined(IN_LIBGCC2) && !defined(IN_TARGET_LIBS) && !defined(IN_RTS)"
print ""
print "/* Structure to save/restore optimization and target specific options. */";
print "struct GTY(()) cl_optimization";
print "{";
n_opt_char = 4;
n_opt_short = 0;
n_opt_int = 0;
n_opt_enum = 0;
n_opt_other = 0;
var_opt_char[0] = "unsigned char x_optimize";
var_opt_char[1] = "unsigned char x_optimize_size";
var_opt_char[2] = "unsigned char x_optimize_debug";
var_opt_char[3] = "unsigned char x_optimize_fast";
for (i = 0; i < n_opts; i++) {
if (flag_set_p("(Optimization|PerFunction)", flags[i])) {
name = var_name(flags[i])
if(name == "")
continue;
if(name in var_opt_seen)
continue;
var_opt_seen[name]++;
otype = var_type_struct(flags[i]);
if (otype ~ "^((un)?signed +)?int *$")
var_opt_int[n_opt_int++] = otype "x_" name;
else if (otype ~ "^((un)?signed +)?short *$")
var_opt_short[n_opt_short++] = otype "x_" name;
else if (otype ~ "^((un)?signed +)?char *$")
var_opt_char[n_opt_char++] = otype "x_" name;
else if (otype ~ ("^enum +[_" alnum "]+ *$"))
var_opt_enum[n_opt_enum++] = otype "x_" name;
else
var_opt_other[n_opt_other++] = otype "x_" name;
}
}
for (i = 0; i < n_opt_other; i++) {
print " " var_opt_other[i] ";";
}
for (i = 0; i < n_opt_int; i++) {
print " " var_opt_int[i] ";";
}
for (i = 0; i < n_opt_enum; i++) {
print " " var_opt_enum[i] ";";
}
for (i = 0; i < n_opt_short; i++) {
print " " var_opt_short[i] ";";
}
for (i = 0; i < n_opt_char; i++) {
print " " var_opt_char[i] ";";
}
print "};";
print "";
# Target and optimization save/restore/print functions.
print "/* Structure to save/restore selected target specific options. */";
print "struct GTY(()) cl_target_option";
print "{";
n_target_char = 0;
n_target_short = 0;
n_target_int = 0;
n_target_enum = 0;
n_target_other = 0;
for (i = 0; i < n_target_save; i++) {
if (target_save_decl[i] ~ "^((un)?signed +)?int +[_" alnum "]+$")
var_target_int[n_target_int++] = target_save_decl[i];
else if (target_save_decl[i] ~ "^((un)?signed +)?short +[_" alnum "]+$")
var_target_short[n_target_short++] = target_save_decl[i];
else if (target_save_decl[i] ~ "^((un)?signed +)?char +[_ " alnum "]+$")
var_target_char[n_target_char++] = target_save_decl[i];
else if (target_save_decl[i] ~ ("^enum +[_" alnum "]+ +[_" alnum "]+$")) {
var_target_enum[n_target_enum++] = target_save_decl[i];
}
else
var_target_other[n_target_other++] = target_save_decl[i];
}
if (have_save) {
for (i = 0; i < n_opts; i++) {
if (flag_set_p("Save", flags[i])) {
name = var_name(flags[i])
if(name == "")
name = "target_flags";
if(name in var_save_seen)
continue;
var_save_seen[name]++;
otype = var_type_struct(flags[i])
if (otype ~ "^((un)?signed +)?int *$")
var_target_int[n_target_int++] = otype "x_" name;
else if (otype ~ "^((un)?signed +)?short *$")
var_target_short[n_target_short++] = otype "x_" name;
else if (otype ~ "^((un)?signed +)?char *$")
var_target_char[n_target_char++] = otype "x_" name;
else if (otype ~ ("^enum +[_" alnum "]+ +[_" alnum "]+"))
var_target_enum[n_target_enum++] = otype "x_" name;
else
var_target_other[n_target_other++] = otype "x_" name;
}
}
} else {
var_target_int[n_target_int++] = "int x_target_flags";
}
for (i = 0; i < n_target_other; i++) {
print " " var_target_other[i] ";";
}
for (i = 0; i < n_target_enum; i++) {
print " " var_target_enum[i] ";";
}
for (i = 0; i < n_target_int; i++) {
print " " var_target_int[i] ";";
}
for (i = 0; i < n_target_short; i++) {
print " " var_target_short[i] ";";
}
for (i = 0; i < n_target_char; i++) {
print " " var_target_char[i] ";";
}
print "};";
print "";
print "";
print "/* Save optimization variables into a structure. */"
print "extern void cl_optimization_save (struct cl_optimization *, struct gcc_options *);";
print "";
print "/* Restore optimization variables from a structure. */";
print "extern void cl_optimization_restore (struct gcc_options *, struct cl_optimization *);";
print "";
print "/* Print optimization variables from a structure. */";
print "extern void cl_optimization_print (FILE *, int, struct cl_optimization *);";
print "";
print "/* Print different optimization variables from structures provided as arguments. */";
print "extern void cl_optimization_print_diff (FILE *, int, cl_optimization *ptr1, cl_optimization *ptr2);";
print "";
print "/* Save selected option variables into a structure. */"
print "extern void cl_target_option_save (struct cl_target_option *, struct gcc_options *);";
print "";
print "/* Restore selected option variables from a structure. */"
print "extern void cl_target_option_restore (struct gcc_options *, struct cl_target_option *);";
print "";
print "/* Print target option variables from a structure. */";
print "extern void cl_target_option_print (FILE *, int, struct cl_target_option *);";
print "";
print "/* Print different target option variables from structures provided as arguments. */";
print "extern void cl_target_option_print_diff (FILE *, int, cl_target_option *ptr1, cl_target_option *ptr2);";
print "";
print "/* Compare two target option variables from a structure. */";
print "extern bool cl_target_option_eq (const struct cl_target_option *, const struct cl_target_option *);";
print "";
print "/* Free heap memory used by target option variables. */";
print "extern void cl_target_option_free (struct cl_target_option *);";
print "";
print "/* Hash option variables from a structure. */";
print "extern hashval_t cl_target_option_hash (const struct cl_target_option *);";
print "";
print "/* Hash optimization from a structure. */";
print "extern hashval_t cl_optimization_hash (const struct cl_optimization *);";
print "";
print "/* Compare two optimization options. */";
print "extern bool cl_optimization_option_eq (cl_optimization const *ptr1, cl_optimization const *ptr2);"
print "";
print "/* Free heap memory used by optimization options. */";
print "extern void cl_optimization_option_free (cl_optimization *ptr1);"
print "";
print "/* Generator files may not have access to location_t, and don't need these. */"
print "#if defined(UNKNOWN_LOCATION)"
print "bool "
print "common_handle_option_auto (struct gcc_options *opts, "
print " struct gcc_options *opts_set, "
print " const struct cl_decoded_option *decoded, "
print " unsigned int lang_mask, int kind, "
print " location_t loc, "
print " const struct cl_option_handlers *handlers, "
print " diagnostic_context *dc); "
for (i = 0; i < n_langs; i++) {
lang_name = lang_sanitized_name(langs[i]);
print "bool"
print lang_name "_handle_option_auto (struct gcc_options *opts,"
print " struct gcc_options *opts_set,"
print " size_t scode, const char *arg,"
print " HOST_WIDE_INT value,"
print " unsigned int lang_mask, int kind,"
print " location_t loc,"
print " const struct cl_option_handlers *handlers,"
print " diagnostic_context *dc);"
}
print "void cpp_handle_option_auto (const struct gcc_options * opts, size_t scode,"
print " struct cpp_options * cpp_opts);"
print "void init_global_opts_from_cpp(struct gcc_options * opts, "
print " const struct cpp_options * cpp_opts);"
print "#endif";
print "#endif";
print "";
for (i = 0; i < n_opts; i++) {
name = opt_args("Mask", flags[i])
if (name == "") {
opt = opt_args("InverseMask", flags[i])
if (opt ~ ",")
name = nth_arg(0, opt)
else
name = opt
}
if (name != "" && mask_bits[name] == 0) {
mask_bits[name] = 1
vname = var_name(flags[i])
mask = "MASK_"
mask_1 = "1U"
if (vname != "") {
mask = "OPTION_MASK_"
if (host_wide_int[vname] == "yes")
mask_1 = "HOST_WIDE_INT_1U"
} else
extra_mask_bits[name] = 1
print "#define " mask name " (" mask_1 " << " masknum[vname]++ ")"
}
}
for (i = 0; i < n_extra_masks; i++) {
if (extra_mask_bits[extra_masks[i]] == 0)
print "#define MASK_" extra_masks[i] " (1U << " masknum[""]++ ")"
}
for (var in masknum) {
if (var != "" && host_wide_int[var] == "yes") {
print "#if defined(HOST_BITS_PER_WIDE_INT) && " masknum[var] " > HOST_BITS_PER_WIDE_INT"
print "#error too many masks for " var
print "#endif"
}
else if (masknum[var] > 32) {
if (var == "")
print "#error too many target masks"
else
print "#error too many masks for " var
}
}
print ""
for (i = 0; i < n_opts; i++) {
name = opt_args("Mask", flags[i])
if (name == "") {
opt = opt_args("InverseMask", flags[i])
if (opt ~ ",")
name = nth_arg(0, opt)
else
name = opt
}
if (name != "" && mask_macros[name] == 0) {
mask_macros[name] = 1
vname = var_name(flags[i])
mask = "OPTION_MASK_"
if (vname == "") {
vname = "target_flags"
mask = "MASK_"
extra_mask_macros[name] = 1
}
print "#define TARGET_" name \
" ((" vname " & " mask name ") != 0)"
print "#define TARGET_" name "_P(" vname ")" \
" (((" vname ") & " mask name ") != 0)"
}
}
for (i = 0; i < n_extra_masks; i++) {
if (extra_mask_macros[extra_masks[i]] == 0)
print "#define TARGET_" extra_masks[i] \
" ((target_flags & MASK_" extra_masks[i] ") != 0)"
}
print ""
for (i = 0; i < n_opts; i++) {
opt = opt_args("InverseMask", flags[i])
if (opt ~ ",") {
vname = var_name(flags[i])
mask = "OPTION_MASK_"
if (vname == "") {
vname = "target_flags"
mask = "MASK_"
}
print "#define TARGET_" nth_arg(1, opt) \
" ((" vname " & " mask nth_arg(0, opt) ") == 0)"
}
}
print ""
for (i = 0; i < n_langs; i++) {
macros[i] = "CL_" lang_sanitized_name(langs[i])
s = substr(" ", length (macros[i]))
print "#define " macros[i] s " (1U << " i ")"
}
print "#define CL_LANG_ALL ((1U << " n_langs ") - 1)"
print ""
print "enum opt_code"
print "{"
for (i = 0; i < n_opts; i++)
back_chain[i] = "N_OPTS";
enum_value = 0
for (i = 0; i < n_opts; i++) {
# 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];
i++;
}
len = length (opts[i]);
enum = opt_enum(opts[i])
enum_string = enum " = " enum_value ","
# Aliases do not get enumeration names.
if ((flag_set_p("Alias.*", flags[i]) \
&& !flag_set_p("SeparateAlias", flags[i])) \
|| flag_set_p("Ignore", flags[i])) {
enum_string = "/* " enum_string " */"
}
# 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 (enum_string))
if (help[i] == "")
hlp = "0"
else
hlp = "N_(\"" help[i] "\")";
print " " enum_string s "/* -" opts[i] " */"
enum_value++
}
print " N_OPTS,"
print " OPT_SPECIAL_unknown,"
print " OPT_SPECIAL_ignore,"
print " OPT_SPECIAL_warn_removed,"
print " OPT_SPECIAL_program_name,"
print " OPT_SPECIAL_input_file"
print "};"
print ""
print "#ifdef GCC_C_COMMON_C"
print "/* Mapping from cpp message reasons to the options that enable them. */"
print "#include <cpplib.h>"
print "struct cpp_reason_option_codes_t"
print "{"
print " /* cpplib message reason. */"
print " const enum cpp_warning_reason reason;"
print " /* gcc option that controls this message. */"
print " const int option_code;"
print "};"
print ""
print "static const struct cpp_reason_option_codes_t cpp_reason_option_codes[] = {"
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++;
}
cpp_reason = nth_arg(0, opt_args("CppReason", flags[i]));
if (cpp_reason != "") {
cpp_reason = cpp_reason ",";
printf(" {%-40s %s},\n", cpp_reason, opt_enum(opts[i]))
}
}
printf(" {%-40s 0},\n", "CPP_W_NONE,")
print "};"
print "#endif"
print ""
print "#endif /* OPTIONS_H */"
}