e88a93840b
2017-07-27 Martin Liska <mliska@suse.cz> * opt-functions.awk: Add validation of value of Init. * optc-gen.awk: Pass new argument. From-SVN: r250625
365 lines
11 KiB
Awk
365 lines
11 KiB
Awk
# Copyright (C) 2003-2017 Free Software Foundation, Inc.
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# Contributed by Kelley Cook, June 2004.
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# Original code from Neil Booth, May 2003.
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#
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# This program is free software; you can redistribute it and/or modify it
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# under the terms of the GNU General Public License as published by the
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# Free Software Foundation; either version 3, or (at your option) any
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# later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; see the file COPYING3. If not see
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# <http://www.gnu.org/licenses/>.
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# Some common subroutines for use by opt[ch]-gen.awk.
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# Define some helpful character classes, for portability.
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BEGIN {
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lower = "abcdefghijklmnopqrstuvwxyz"
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upper = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
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digit = "0123456789"
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alnum = lower "" upper "" digit
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}
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# Return nonzero if FLAGS contains a flag matching REGEX.
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function flag_set_p(regex, flags)
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{
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# Ignore the arguments of flags with arguments.
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gsub ("\\([^)]+\\)", "", flags);
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return (" " flags " ") ~ (" " regex " ")
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}
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# Return STRING if FLAGS contains a flag matching regexp REGEX,
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# otherwise return the empty string.
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function test_flag(regex, flags, string)
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{
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if (flag_set_p(regex, flags))
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return string
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return ""
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}
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# Return a field initializer, with trailing comma, for a field that is
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# 1 if FLAGS contains a flag matching REGEX and 0 otherwise.
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function flag_init(regex, flags)
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{
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if (flag_set_p(regex, flags))
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return "1 /* " regex " */, "
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else
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return "0, "
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}
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# If FLAGS contains a "NAME(...argument...)" flag, return the value
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# of the argument. Return the empty string otherwise.
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function opt_args(name, flags)
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{
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flags = " " flags
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if (flags !~ " " name "\\(")
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return ""
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sub(".* " name "\\(", "", flags)
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if (flags ~ "^[{]")
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{
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sub ("^[{]", "", flags)
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sub ("}\\).*", "", flags)
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}
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else
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sub("\\).*", "", flags)
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return flags
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}
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# Return the Nth comma-separated element of S. Return the empty string
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# if S does not contain N elements.
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function nth_arg(n, s)
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{
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while (n-- > 0) {
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if (s !~ ",")
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return ""
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sub("[^,]*, *", "", s)
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}
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sub(",.*", "", s)
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return s
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}
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# Return a bitmask of CL_* values for option flags FLAGS.
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function switch_flags (flags)
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{
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result = "0"
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for (j = 0; j < n_langs; j++) {
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regex = langs[j]
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gsub ( "\\+", "\\+", regex )
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result = result test_flag(regex, flags, " | " macros[j])
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}
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result = result \
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test_flag("Common", flags, " | CL_COMMON") \
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test_flag("Target", flags, " | CL_TARGET") \
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test_flag("PchIgnore", flags, " | CL_PCH_IGNORE") \
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test_flag("Driver", flags, " | CL_DRIVER") \
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test_flag("Joined", flags, " | CL_JOINED") \
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test_flag("JoinedOrMissing", flags, " | CL_JOINED") \
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test_flag("Separate", flags, " | CL_SEPARATE") \
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test_flag("Undocumented", flags, " | CL_UNDOCUMENTED") \
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test_flag("NoDWARFRecord", flags, " | CL_NO_DWARF_RECORD") \
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test_flag("Warning", flags, " | CL_WARNING") \
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test_flag("(Optimization|PerFunction)", flags, " | CL_OPTIMIZATION")
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sub( "^0 \\| ", "", result )
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return result
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}
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# Return bit-field initializers for option flags FLAGS.
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function switch_bit_fields (flags)
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{
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vn = var_name(flags);
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if (host_wide_int[vn] == "yes")
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hwi = "Host_Wide_Int"
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else
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hwi = ""
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result = ""
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sep_args = opt_args("Args", flags)
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if (sep_args == "")
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sep_args = 0
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else
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sep_args--
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result = result sep_args ", "
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result = result \
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flag_init("SeparateAlias", flags) \
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flag_init("NegativeAlias", flags) \
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flag_init("NoDriverArg", flags) \
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flag_init("RejectDriver", flags) \
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flag_init("RejectNegative", flags) \
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flag_init("JoinedOrMissing", flags) \
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flag_init("UInteger", flags) \
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flag_init("Host_Wide_Int", hwi) \
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flag_init("ToLower", flags) \
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flag_init("Report", flags)
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sub(", $", "", result)
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return result
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}
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# If FLAGS includes a Var flag, return the name of the variable it specifies.
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# Return the empty string otherwise.
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function var_name(flags)
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{
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return nth_arg(0, opt_args("Var", flags))
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}
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# Return the name of the variable if FLAGS has a HOST_WIDE_INT variable.
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# Return the empty string otherwise.
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function host_wide_int_var_name(flags)
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{
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split (flags, array, "[ \t]+")
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if (array[1] == "HOST_WIDE_INT")
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return array[2]
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else
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return ""
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}
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# Return true if the option described by FLAGS has a globally-visible state.
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function global_state_p(flags)
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{
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return (var_name(flags) != "" \
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|| opt_args("Mask", flags) != "" \
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|| opt_args("InverseMask", flags) != "")
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}
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# Return true if the option described by FLAGS must have some state
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# associated with it.
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function needs_state_p(flags)
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{
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return (flag_set_p("Target", flags) \
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&& !flag_set_p("Alias.*", flags) \
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&& !flag_set_p("Ignore", flags))
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}
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# If FLAGS describes an option that needs state without a public
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# variable name, return the name of that field, minus the initial
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# "x_", otherwise return "". NAME is the name of the option.
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function static_var(name, flags)
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{
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if (global_state_p(flags) || !needs_state_p(flags))
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return ""
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gsub ("[^" alnum "]", "_", name)
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return "VAR_" name
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}
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# Return the type of variable that should be associated with the given flags.
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function var_type(flags)
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{
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if (flag_set_p("Defer", flags))
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return "void *"
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else if (flag_set_p("Enum.*", flags)) {
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en = opt_args("Enum", flags);
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return enum_type[en] " "
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}
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else if (!flag_set_p("Joined.*", flags) && !flag_set_p("Separate", flags))
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return "int "
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else if (flag_set_p("UInteger", flags))
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return "int "
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else
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return "const char *"
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}
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# Return the type of variable that should be associated with the given flags
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# for use within a structure. Simple variables are changed to signed char
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# type instead of int to save space.
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function var_type_struct(flags)
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{
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if (flag_set_p("UInteger", flags))
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return "int "
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else if (flag_set_p("Enum.*", flags)) {
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en = opt_args("Enum", flags);
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return enum_type[en] " "
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}
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else if (!flag_set_p("Joined.*", flags) && !flag_set_p("Separate", flags)) {
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if (flag_set_p(".*Mask.*", flags)) {
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if (host_wide_int[var_name(flags)] == "yes")
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return "HOST_WIDE_INT "
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else
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return "int "
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}
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else
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return "signed char "
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}
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else
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return "const char *"
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}
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# Given that an option has flags FLAGS, return an initializer for the
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# "var_enum", "var_type" and "var_value" fields of its cl_options[] entry.
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function var_set(flags)
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{
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if (flag_set_p("Defer", flags))
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return "0, CLVC_DEFER, 0"
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s = nth_arg(1, opt_args("Var", flags))
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if (s != "")
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return "0, CLVC_EQUAL, " s
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s = opt_args("Mask", flags);
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if (s != "") {
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vn = var_name(flags);
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if (vn)
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return "0, CLVC_BIT_SET, OPTION_MASK_" s
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else
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return "0, CLVC_BIT_SET, MASK_" s
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}
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s = nth_arg(0, opt_args("InverseMask", flags));
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if (s != "") {
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vn = var_name(flags);
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if (vn)
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return "0, CLVC_BIT_CLEAR, OPTION_MASK_" s
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else
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return "0, CLVC_BIT_CLEAR, MASK_" s
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}
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if (flag_set_p("Enum.*", flags)) {
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en = opt_args("Enum", flags);
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return enum_index[en] ", CLVC_ENUM, 0"
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}
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if (var_type(flags) == "const char *")
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return "0, CLVC_STRING, 0"
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return "0, CLVC_BOOLEAN, 0"
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}
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# Given that an option called NAME has flags FLAGS, return an initializer
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# for the "flag_var" field of its cl_options[] entry.
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function var_ref(name, flags)
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{
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name = var_name(flags) static_var(name, flags)
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if (name != "")
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return "offsetof (struct gcc_options, x_" name ")"
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if (opt_args("Mask", flags) != "")
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return "offsetof (struct gcc_options, x_target_flags)"
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if (opt_args("InverseMask", flags) != "")
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return "offsetof (struct gcc_options, x_target_flags)"
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return "(unsigned short) -1"
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}
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# Given the option called NAME return a sanitized version of its name.
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function opt_sanitized_name(name)
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{
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gsub ("[^" alnum "]", "_", name)
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return name
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}
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# Given the option called NAME return the appropriate enum for it.
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function opt_enum(name)
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{
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return "OPT_" opt_sanitized_name(name)
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}
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# Given the language called NAME return a sanitized version of its name.
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function lang_sanitized_name(name)
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{
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gsub( "[^" alnum "_]", "X", name )
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return name
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}
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# Search for a valid var_name among all OPTS equal to option NAME.
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# If not found, return "".
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function search_var_name(name, opt_numbers, opts, flags, n_opts)
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{
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opt_var_name = var_name(flags[opt_numbers[name]]);
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if (opt_var_name != "") {
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return opt_var_name;
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}
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for (k = 0; k < n_opts; k++) {
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if (opts[k] == name && var_name(flags[k]) != "") {
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return var_name(flags[k]);
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}
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}
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return ""
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}
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function integer_range_info(range_option, init, option)
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{
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if (range_option != "") {
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start = nth_arg(0, range_option);
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end = nth_arg(1, range_option);
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if (init != "" && init != "-1" && (init < start || init > end))
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print "#error initial value " init " of '" option "' must be in range [" start "," end "]"
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return start ", " end
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}
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else
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return "-1, -1"
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}
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# Handle LangEnabledBy(ENABLED_BY_LANGS, ENABLEDBY_NAME, ENABLEDBY_POSARG,
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# ENABLEDBY_NEGARG). This function does not return anything.
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function lang_enabled_by(enabledby_langs, enabledby_name, enabledby_posarg, enabledby_negarg)
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{
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n_enabledby_arg_langs = split(enabledby_langs, enabledby_arg_langs, " ");
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if (enabledby_posarg != "" && enabledby_negarg != "") {
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with_args = "," enabledby_posarg "," enabledby_negarg
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} else if (enabledby_posarg == "" && enabledby_negarg == "") {
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with_args = ""
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} else {
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print "#error " opts[i] " LangEnabledBy("enabledby_langs","enabledby_name", " \
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enabledby_posarg", " enabledby_negargs \
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") with three arguments, it should have either 2 or 4"
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}
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n_enabledby_array = split(enabledby_name, enabledby_array, " \\|\\| ");
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for (k = 1; k <= n_enabledby_array; k++) {
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enabledby_index = opt_numbers[enabledby_array[k]];
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if (enabledby_index == "") {
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print "#error " opts[i] " LangEnabledBy("enabledby_langs","enabledby_name", " \
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enabledby_posarg", " enabledby_negargs"), unknown option '" enabledby_name "'"
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} else {
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for (j = 1; j <= n_enabledby_arg_langs; j++) {
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lang_name = lang_sanitized_name(enabledby_arg_langs[j]);
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lang_index = lang_numbers[enabledby_arg_langs[j]];
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if (enables[lang_name,enabledby_array[k]] == "") {
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enabledby[lang_name,n_enabledby_lang[lang_index]] = enabledby_array[k];
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n_enabledby_lang[lang_index]++;
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}
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enables[lang_name,enabledby_array[k]] \
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= enables[lang_name,enabledby_array[k]] opts[i] with_args ";";
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}
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}
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}
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}
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