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https://github.com/brain-hackers/u-boot-brain
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![Eugeniu Rosca](/assets/img/avatar_default.png)
Align Kconfig to Linux 4.17-rc4 with minimal impact on non-kconfig files. Previous Kconfig sync was done by commitbf7ab1e70f
("kconfig: re-sync with Linux 4.10") and it achieved almost perfect alignment with a few (intended) exceptions, caused by below U-boot commits: [A] v2015.045f9eb22075
("kbuild: remove scripts/multiconfig.sh") [B] v2015.0720c20826ef
("Kconfig: Enable usage of escape char '\' in string values") [C] v2016.01da58dec866
("Various Makefiles: Add SPDX-License-Identifier tags") [D] v2016.035b8031ccb4
("Add more SPDX-License-Identifier tags") [E] v2016.03192bc6948b
("Fix GCC format-security errors and convert sprintfs.") Here is the list of Kconfig commits which followed the v4.10 alignment: [F] v2018.010931ed3c0d
("kconfig/symbol.c: use correct pointer type argument for sizeof") [G] v2018.031414e09b4f
("kconfig: revert change that was not needed for -Wformat-security") [H] v2018.0583d290c56f
("SPDX: Convert all of our single license tags to Linux Kernel style") Commit [F] was subsequently applied to Linux kernel as commit [I] with the same patch id, so it won't contribute to further misalignment. [I] v4.15-rc1 88127dae6ed9 ("kconfig/symbol.c: use correct pointer type argument for sizeof") Commit [G] is a Kconfig-specific revert of commit [E]. Commit [H] relocated and reformatted the license doing no functional change. In summary, the only functional change that makes U-boot Kconfig diverge from Linux Kconfig is commit [B]. After a brief analysis, the purpose of [B] seems to be placing "\n" literals in string symbols like CONFIG_AUTOBOOT_PROMPT="autoboot in %d seconds\n" in order to pass them directly to printf and expect correct output at runtime. Currently, Linux doesn't seem to have this requirement, so for the moment [B] looks like a U-boot specific feature/fix. From point of view of further Kconfig alignment and backporting efforts, it is highly desired that commits like [B] are propagated to Linux and any Kconfig fixes/features are contributed to Linux kernel first. This specific Kconfig re-sync just keeps [B] in place. Contrary to 4.10 Kconfig re-sync (which achieves zero non-kconfig changes), 4.17-rc4 re-sync does some amount of updates in Kbuild (striving to keep them at minimum), due to a number of reasons: * Kbuild is affected by the removal of Kconfig "*shipped" files and now requires flex and bison pre-installed on the host. * PYTHON{2,3} variables are defined in top-level Makefile as prerequisite for running the newly developed Kconfig unit tests. * silentoldconfig becomes an "internal implementation detail" deprecated for external use, being renamed to syncconfig. The exact non-kconfig files touched by this commit are: $ git show --format="" --stat -- ':!scripts/kconfig' .gitignore | 2 ++ Makefile | 9 +++++++-- scripts/Makefile.build | 11 +++++++++++ scripts/Makefile.lib | 41 ++++++++++++----------------------------- The imported Linux commits touching the above files are: c054be10ffdbd5 ("remove gperf left-overs from build system") 73a4f6dbe70a1b ("kbuild: add LEX and YACC variables") 033dba2ec06c47 ("kbuild: prepare to remove C files pre-generated by flex and bison") eea199b445f64c ("kbuild: remove unnecessary LEX_PREFIX and YACC_PREFIX") e71de5ee08dcb0 ("kbuild: remove remaining use of undefined YACC_PREFIX") d59fbbd09d5d6b ("kbuild: replace hardcoded bison in cmd_bison_h with $(YACC)") 911a91c39cabcb H ("kconfig: rename silentoldconfig to syncconfig") 59889300274569 (".gitignore: move *.lex.c *.tab.[ch] patterns to the top-level .gitignore") 9a8dfb394c0467 ("kbuild: clean up *.lex.c and *.tab.[ch] patterns from top-level Makefile") 833e622459432e H ("genksyms: generate lexer and parser during build instead of shipping") b23d1a241f4eb4 H ("kbuild: add %.lex.c and %.tab.[ch] to 'targets' automatically") e9781b52d4e0e3 H ("kbuild: add PYTHON2 and PYTHON3 variables") The commits marked with 'H' are assessed as "hard" (build will fail) prerequisites and the rest of them are assessed as "soft" prerequisites for the re-sync. In spite of relatively high number of non-H commits, they belong to this Kconfig update topic-wise and decrease the number of cherry pick conflicts for many commits in this series. Additional effort can be put in eliminating the soft prerequisites, if really needed. The commits which contributed to this Kconfig re-sync are listed below. Whenever a conflict resolution has been performed (mostly by hand, but sometimes automatically by git), it is revealed by the '!' sign in the second column, which means a patch id mismatch between Linux and U-boot commits: 9be3213b14d44f ("gconfig: remove misleading parentheses around a condition") ff85a1a80e0034 ("kconfig: Check for libncurses before menuconfig") ad8181060788c8 ("kconfig: fix sparse warnings in nconfig") cb77f0d623ff33 ! ("scripts: Switch to more portable Perl shebang") bb3290d91695bb ! ("Remove gperf usage from toolchain") c054be10ffdbd5 ("remove gperf left-overs from build system") b24413180f5600 ! ("License cleanup: add SPDX GPL-2.0 license identifier to files with no license") 9059a3493efea6 ! ("kconfig: fix relational operators for bool and tristate symbols") 2c37e08464a850 ("kconfig: Warn if choice default is not in choice") 33ca1a24866373 ("kconfig: Document the 'menu' struct") 52aede4ba5efd1 ("kconfig: Document the 'symbol' struct") c873443430ebd1 ("kconfig: Sync zconf.y with zconf.tab.c_shipped") 9a826842ff2fbd ("kconfig: Rename menu_check_dep() to rewrite_m()") fa8cedaef814ce ("kconfig: Clarify expression rewriting") f77850d3fe0c96 ("kconfig: Clean up modules handling and fix crash") e3b03bf29d6b99 ("kconfig: display recursive dependency resolution hint just once") 73a4f6dbe70a1b ! ("kbuild: add LEX and YACC variables") 033dba2ec06c47 ! ("kbuild: prepare to remove C files pre-generated by flex and bison") 29c833061c1d8c ("kconfig: generate lexer and parser during build instead of shipping") 26e47a3c11a25c ("kconfig: Don't leak symbol names during parsing") 24161a6711c945 ("kconfig: Don't leak 'source' filenames during parsing") bc28fe1d5ede88 ("kconfig: Don't leak 'option' arguments during parsing") 0724a7c32a54e3 ("kconfig: Don't leak main menus during parsing") ae7440ef0c8013 ("kconfig: Fix automatic menu creation mem leak") 5b1374b3b3c2fc ("kconfig: Fix expr_free() E_NOT leak") 7cf33f88e29410 ("kconfig: Fix choice symbol expression leak") 05cccce580456d ("kconfig: Document automatic submenu creation code") 0735f7e5def2ab ("kconfig: Document important expression functions") df60f4b92d3d0b ("kconfig: Remove menu_end_entry()") b92d804a51796b ("kconfig: drop 'boolean' keyword") 6479f327dea60d ("kconfig: Warn if there is more than one help text") 52e58a3caeba5d ("kconfig: make input_mode static") 5a3dc717b3c785 ("kconfig: make xfgets() really static") 84dd95d4f87a0d ("kconfig: make conf_unsaved a local variable of conf_read()") 765f4cdef6f80d ("kconfig: use default 'yy' prefix for lexer and parser") eea199b445f64c ("kbuild: remove unnecessary LEX_PREFIX and YACC_PREFIX") e71de5ee08dcb0 ("kbuild: remove remaining use of undefined YACC_PREFIX") d59fbbd09d5d6b ! ("kbuild: replace hardcoded bison in cmd_bison_h with $(YACC)") 3e41ba05b6d60c ("kconfig: Document SYMBOL_OPTIONAL logic") d3465af60f4471 ("kconfig: Clarify choice dependency propagation") 9d1a9e8bc18bea ("kconfig: Document 'if' flattening logic") b53688014e3325 ("kconfig: Clarify menu and 'if' dependency propagation") d0fd0428ecf04b ("kconfig: fix make xconfig when gettext is missing") 312ee68752faaa ("kconfig: announce removal of oldnoconfig if used") 1ccb27143360bd ("kconfig: make "Selected by:" and "Implied by:" readable") cedd55d49dee94 ! ("kconfig: Remove silentoldconfig from help and docs; fix kconfig/conf's help") 1b9eda2e4892cb ("kconfig: Warn if help text is blank") cb67ab2cd2b8ab ("kconfig: do not write choice values when their dependency becomes n") 4f208f392103e8 ("kconfig: show '?' prompt even if no help text is available") cd58a91def2acc ("kconfig: remove 'config*' pattern from .gitignnore") d2a04648a5dbc3 ("kconfig: remove check_stdin()") f3ff6fb5db68bc ("kconfig: echo stdin to stdout if either is redirected") 9e3e10c725360b ("kconfig: send error messages to stderr") d717f24d8c6808 ("kconfig: add xrealloc() helper") 523ca58b7db2e3 ("kconfig: remove const qualifier from sym_expand_string_value()") cd81fc82b93fa4 ("kconfig: add xstrdup() helper") f4bc1eefc1608e ("kconfig: set SYMBOL_AUTO to the symbol marked with defconfig_list") bf0bbdcf100322 ("kconfig: Don't leak choice names during parsing") 1a90ce36c6eff6 ("kconfig: Update ncurses package names for menuconfig") 5ae6fcc4bb82bd ("kconfig: fix line number in recursive inclusion error message") 07a422bb213adb ! ("kbuild: restore autoksyms.h touch to the top Makefile") 9a47ceec543bfb ("kconfig: clean-up reverse dependency help implementation") d9119b5925a03b ("kconfig: Print reverse dependencies in groups") f467c5640c29ad ("kconfig: only write '# CONFIG_FOO is not set' for visible symbols") 59a80b5e892dde ("kconfig: do not call check_conf() for olddefconfig") 4bb3a5b085cd6f ("kconfig: remove unneeded input_mode test in conf()") 99f0b6578bab44 ("kconfig: remove redundant input_mode test for check_conf() loop") 2aad9b89621386 ("kconfig: hide irrelevant sub-menus for oldconfig") 81d2bc2273052e ("kconfig: invoke oldconfig instead of silentoldconfig from local*config") 911a91c39cabcb ! ("kconfig: rename silentoldconfig to syncconfig") 2a61625835c7c8 ! ("kconfig: remove redundant streamline_config.pl prerequisite") 022a4bf6b59dfd ("kconfig: tests: add framework for Kconfig unit testing") 1903c511905984 ("kconfig: tests: add basic choice tests") 49ac3c0c3aa3b7 ("kconfig: tests: test automatic submenu creation") b76960c0f6b25d ("kconfig: tests: test if new symbols in choice are asked") 930c429a656fdb ("kconfig: tests: check unneeded "is not set" with unmet dependency") ee236610653ede ("kconfig: tests: check visibility of tristate choice values in y choice") beaaddb625400e ("kconfig: tests: test defconfig when two choices interact") 3e4888c2e3d77d ("kconfig: tests: test randconfig for choice in choice") 29c434f367ea7b ("kconfig: tests: test if recursive dependencies are detected") e2c75e7667c737 ("kconfig: tests: test if recursive inclusion is detected") f622f827958162 ("kconfig: warn unmet direct dependency of tristate symbols selected by y") f8f69dc0b4e070 ("kconfig: make unmet dependency warnings readable") 26561514cc9def ("kconfig: do not include both curses.h and ncurses.h for nconfig") 32a94b8b0c3e5a ("kconfig: remove duplicated file name and lineno of recursive inclusion") 379a8eb8eb1a55 ("kconfig: detect recursive inclusion earlier") 18492685e479fd ("kconfig: use yylineno option instead of manual lineno increments") 59889300274569 ! (".gitignore: move *.lex.c *.tab.[ch] patterns to the top-level .gitignore") 9a8dfb394c0467 ! ("kbuild: clean up *.lex.c and *.tab.[ch] patterns from top-level Makefile") 833e622459432e ! ("genksyms: generate lexer and parser during build instead of shipping") b23d1a241f4eb4 ! ("kbuild: add %.lex.c and %.tab.[ch] to 'targets' automatically") 17baab68d337a0 ("kconfig: extend output of 'listnewconfig'") e9781b52d4e0e3 ! ("kbuild: add PYTHON2 and PYTHON3 variables") The current Kconfig update generates below build-time warnings: YACC scripts/dtc/dtc-parser.tab.h scripts/dtc/dtc-parser.y: warning: 3 shift/reduce conflicts [-Wconflicts-sr] YACC scripts/dtc/dtc-parser.tab.c scripts/dtc/dtc-parser.y: warning: 3 shift/reduce conflicts [-Wconflicts-sr] This seems to happen because the Kbuild updates apparently didn't make room for both "*shipped"-based builds and flex/bison-based builds. A similar problem has been reported for genksyms parser in v4.17-rc1 commit 833e622459432e ("genksyms: generate lexer and parser during build instead of shipping"). I have figured out empirically that the warnings are healed after updating the in-tree U-boot DTC to upstream v1.4.6-9, same as done by Linux v4.17-rc1 commit 9130ba88464032 ("scripts/dtc: Update to upstream version v1.4.6-9-gaadd0b65c987"). Whether fixing the DTC-related yacc warnings should be done together with the Kconfig re-sync, I would like to hear from community. My testing was limited to: - make defconfig all - make ARCH=arm CROSS_COMPILE=aarch64-linux-gnu- r8a7795_ulcb_defconfig all - comparing .config before and after the re-sync - running the newly imported Kconfig unit tests as seen below: $ make testconfig Tested-by: Petr Vorel <petr.vorel@gmail.com> ============================= test session starts ============================= scripts/kconfig/tests/auto_submenu/__init__.py::test PASSED [ 7%] scripts/kconfig/tests/choice/__init__.py::test_oldask0 PASSED [ 14%] scripts/kconfig/tests/choice/__init__.py::test_oldask1 PASSED [ 21%] scripts/kconfig/tests/choice/__init__.py::test_allyes PASSED [ 28%] scripts/kconfig/tests/choice/__init__.py::test_allmod PASSED [ 35%] scripts/kconfig/tests/choice/__init__.py::test_allno PASSED [ 42%] scripts/kconfig/tests/choice/__init__.py::test_alldef PASSED [ 50%] scripts/kconfig/tests/choice_value_with_m_dep/__init__.py::test PASSED [ 57%] scripts/kconfig/tests/err_recursive_inc/__init__.py::test PASSED [ 64%] scripts/kconfig/tests/inter_choice/__init__.py::test PASSED [ 71%] scripts/kconfig/tests/new_choice_with_dep/__init__.py::test PASSED [ 78%] scripts/kconfig/tests/no_write_if_dep_unmet/__init__.py::test PASSED [ 85%] scripts/kconfig/tests/rand_nested_choice/__init__.py::test PASSED [ 92%] scripts/kconfig/tests/warn_recursive_dep/__init__.py::test PASSED [100%] ========================== 14 passed in 0.34 seconds ========================== Signed-off-by: Eugeniu Rosca <erosca@de.adit-jv.com> Reviewed-by: Masahiro Yamada <yamada.masahiro@socionext.com> Tested-by: Petr Vorel <petr.vorel@gmail.com>
330 lines
9.6 KiB
C
330 lines
9.6 KiB
C
/*
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* Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
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* Released under the terms of the GNU GPL v2.0.
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*/
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#ifndef EXPR_H
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#define EXPR_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <assert.h>
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#include <stdio.h>
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#include "list.h"
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#ifndef __cplusplus
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#include <stdbool.h>
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#endif
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struct file {
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struct file *next;
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struct file *parent;
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const char *name;
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int lineno;
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};
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typedef enum tristate {
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no, mod, yes
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} tristate;
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enum expr_type {
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E_NONE, E_OR, E_AND, E_NOT,
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E_EQUAL, E_UNEQUAL, E_LTH, E_LEQ, E_GTH, E_GEQ,
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E_LIST, E_SYMBOL, E_RANGE
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};
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union expr_data {
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struct expr *expr;
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struct symbol *sym;
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};
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struct expr {
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enum expr_type type;
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union expr_data left, right;
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};
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#define EXPR_OR(dep1, dep2) (((dep1)>(dep2))?(dep1):(dep2))
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#define EXPR_AND(dep1, dep2) (((dep1)<(dep2))?(dep1):(dep2))
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#define EXPR_NOT(dep) (2-(dep))
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#define expr_list_for_each_sym(l, e, s) \
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for (e = (l); e && (s = e->right.sym); e = e->left.expr)
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struct expr_value {
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struct expr *expr;
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tristate tri;
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};
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struct symbol_value {
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void *val;
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tristate tri;
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};
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enum symbol_type {
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S_UNKNOWN, S_BOOLEAN, S_TRISTATE, S_INT, S_HEX, S_STRING, S_OTHER
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};
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/* enum values are used as index to symbol.def[] */
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enum {
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S_DEF_USER, /* main user value */
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S_DEF_AUTO, /* values read from auto.conf */
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S_DEF_DEF3, /* Reserved for UI usage */
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S_DEF_DEF4, /* Reserved for UI usage */
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S_DEF_COUNT
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};
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/*
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* Represents a configuration symbol.
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*
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* Choices are represented as a special kind of symbol and have the
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* SYMBOL_CHOICE bit set in 'flags'.
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*/
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struct symbol {
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/* The next symbol in the same bucket in the symbol hash table */
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struct symbol *next;
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/* The name of the symbol, e.g. "FOO" for 'config FOO' */
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char *name;
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/* S_BOOLEAN, S_TRISTATE, ... */
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enum symbol_type type;
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/*
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* The calculated value of the symbol. The SYMBOL_VALID bit is set in
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* 'flags' when this is up to date. Note that this value might differ
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* from the user value set in e.g. a .config file, due to visibility.
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*/
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struct symbol_value curr;
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/*
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* Values for the symbol provided from outside. def[S_DEF_USER] holds
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* the .config value.
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*/
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struct symbol_value def[S_DEF_COUNT];
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/*
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* An upper bound on the tristate value the user can set for the symbol
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* if it is a boolean or tristate. Calculated from prompt dependencies,
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* which also inherit dependencies from enclosing menus, choices, and
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* ifs. If 'n', the user value will be ignored.
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*
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* Symbols lacking prompts always have visibility 'n'.
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*/
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tristate visible;
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/* SYMBOL_* flags */
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int flags;
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/* List of properties. See prop_type. */
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struct property *prop;
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/* Dependencies from enclosing menus, choices, and ifs */
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struct expr_value dir_dep;
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/* Reverse dependencies through being selected by other symbols */
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struct expr_value rev_dep;
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/*
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* "Weak" reverse dependencies through being implied by other symbols
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*/
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struct expr_value implied;
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};
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#define for_all_symbols(i, sym) for (i = 0; i < SYMBOL_HASHSIZE; i++) for (sym = symbol_hash[i]; sym; sym = sym->next) if (sym->type != S_OTHER)
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#define SYMBOL_CONST 0x0001 /* symbol is const */
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#define SYMBOL_CHECK 0x0008 /* used during dependency checking */
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#define SYMBOL_CHOICE 0x0010 /* start of a choice block (null name) */
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#define SYMBOL_CHOICEVAL 0x0020 /* used as a value in a choice block */
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#define SYMBOL_VALID 0x0080 /* set when symbol.curr is calculated */
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#define SYMBOL_OPTIONAL 0x0100 /* choice is optional - values can be 'n' */
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#define SYMBOL_WRITE 0x0200 /* write symbol to file (KCONFIG_CONFIG) */
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#define SYMBOL_CHANGED 0x0400 /* ? */
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#define SYMBOL_AUTO 0x1000 /* value from environment variable */
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#define SYMBOL_CHECKED 0x2000 /* used during dependency checking */
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#define SYMBOL_WARNED 0x8000 /* warning has been issued */
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/* Set when symbol.def[] is used */
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#define SYMBOL_DEF 0x10000 /* First bit of SYMBOL_DEF */
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#define SYMBOL_DEF_USER 0x10000 /* symbol.def[S_DEF_USER] is valid */
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#define SYMBOL_DEF_AUTO 0x20000 /* symbol.def[S_DEF_AUTO] is valid */
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#define SYMBOL_DEF3 0x40000 /* symbol.def[S_DEF_3] is valid */
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#define SYMBOL_DEF4 0x80000 /* symbol.def[S_DEF_4] is valid */
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/* choice values need to be set before calculating this symbol value */
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#define SYMBOL_NEED_SET_CHOICE_VALUES 0x100000
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/* Set symbol to y if allnoconfig; used for symbols that hide others */
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#define SYMBOL_ALLNOCONFIG_Y 0x200000
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#define SYMBOL_MAXLENGTH 256
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#define SYMBOL_HASHSIZE 9973
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/* A property represent the config options that can be associated
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* with a config "symbol".
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* Sample:
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* config FOO
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* default y
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* prompt "foo prompt"
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* select BAR
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* config BAZ
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* int "BAZ Value"
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* range 1..255
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*/
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enum prop_type {
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P_UNKNOWN,
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P_PROMPT, /* prompt "foo prompt" or "BAZ Value" */
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P_COMMENT, /* text associated with a comment */
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P_MENU, /* prompt associated with a menu or menuconfig symbol */
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P_DEFAULT, /* default y */
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P_CHOICE, /* choice value */
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P_SELECT, /* select BAR */
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P_IMPLY, /* imply BAR */
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P_RANGE, /* range 7..100 (for a symbol) */
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P_ENV, /* value from environment variable */
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P_SYMBOL, /* where a symbol is defined */
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};
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struct property {
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struct property *next; /* next property - null if last */
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struct symbol *sym; /* the symbol for which the property is associated */
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enum prop_type type; /* type of property */
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const char *text; /* the prompt value - P_PROMPT, P_MENU, P_COMMENT */
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struct expr_value visible;
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struct expr *expr; /* the optional conditional part of the property */
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struct menu *menu; /* the menu the property are associated with
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* valid for: P_SELECT, P_RANGE, P_CHOICE,
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* P_PROMPT, P_DEFAULT, P_MENU, P_COMMENT */
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struct file *file; /* what file was this property defined */
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int lineno; /* what lineno was this property defined */
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};
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#define for_all_properties(sym, st, tok) \
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for (st = sym->prop; st; st = st->next) \
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if (st->type == (tok))
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#define for_all_defaults(sym, st) for_all_properties(sym, st, P_DEFAULT)
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#define for_all_choices(sym, st) for_all_properties(sym, st, P_CHOICE)
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#define for_all_prompts(sym, st) \
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for (st = sym->prop; st; st = st->next) \
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if (st->text)
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/*
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* Represents a node in the menu tree, as seen in e.g. menuconfig (though used
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* for all front ends). Each symbol, menu, etc. defined in the Kconfig files
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* gets a node. A symbol defined in multiple locations gets one node at each
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* location.
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*/
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struct menu {
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/* The next menu node at the same level */
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struct menu *next;
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/* The parent menu node, corresponding to e.g. a menu or choice */
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struct menu *parent;
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/* The first child menu node, for e.g. menus and choices */
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struct menu *list;
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/*
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* The symbol associated with the menu node. Choices are implemented as
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* a special kind of symbol. NULL for menus, comments, and ifs.
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*/
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struct symbol *sym;
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/*
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* The prompt associated with the node. This holds the prompt for a
|
|
* symbol as well as the text for a menu or comment, along with the
|
|
* type (P_PROMPT, P_MENU, etc.)
|
|
*/
|
|
struct property *prompt;
|
|
|
|
/*
|
|
* 'visible if' dependencies. If more than one is given, they will be
|
|
* ANDed together.
|
|
*/
|
|
struct expr *visibility;
|
|
|
|
/*
|
|
* Ordinary dependencies from e.g. 'depends on' and 'if', ANDed
|
|
* together
|
|
*/
|
|
struct expr *dep;
|
|
|
|
/* MENU_* flags */
|
|
unsigned int flags;
|
|
|
|
/* Any help text associated with the node */
|
|
char *help;
|
|
|
|
/* The location where the menu node appears in the Kconfig files */
|
|
struct file *file;
|
|
int lineno;
|
|
|
|
/* For use by front ends that need to store auxiliary data */
|
|
void *data;
|
|
};
|
|
|
|
/*
|
|
* Set on a menu node when the corresponding symbol changes state in some way.
|
|
* Can be checked by front ends.
|
|
*/
|
|
#define MENU_CHANGED 0x0001
|
|
|
|
#define MENU_ROOT 0x0002
|
|
|
|
struct jump_key {
|
|
struct list_head entries;
|
|
size_t offset;
|
|
struct menu *target;
|
|
int index;
|
|
};
|
|
|
|
#define JUMP_NB 9
|
|
|
|
extern struct file *file_list;
|
|
extern struct file *current_file;
|
|
struct file *lookup_file(const char *name);
|
|
|
|
extern struct symbol symbol_yes, symbol_no, symbol_mod;
|
|
extern struct symbol *modules_sym;
|
|
extern struct symbol *sym_defconfig_list;
|
|
extern int cdebug;
|
|
struct expr *expr_alloc_symbol(struct symbol *sym);
|
|
struct expr *expr_alloc_one(enum expr_type type, struct expr *ce);
|
|
struct expr *expr_alloc_two(enum expr_type type, struct expr *e1, struct expr *e2);
|
|
struct expr *expr_alloc_comp(enum expr_type type, struct symbol *s1, struct symbol *s2);
|
|
struct expr *expr_alloc_and(struct expr *e1, struct expr *e2);
|
|
struct expr *expr_alloc_or(struct expr *e1, struct expr *e2);
|
|
struct expr *expr_copy(const struct expr *org);
|
|
void expr_free(struct expr *e);
|
|
void expr_eliminate_eq(struct expr **ep1, struct expr **ep2);
|
|
tristate expr_calc_value(struct expr *e);
|
|
struct expr *expr_trans_bool(struct expr *e);
|
|
struct expr *expr_eliminate_dups(struct expr *e);
|
|
struct expr *expr_transform(struct expr *e);
|
|
int expr_contains_symbol(struct expr *dep, struct symbol *sym);
|
|
bool expr_depends_symbol(struct expr *dep, struct symbol *sym);
|
|
struct expr *expr_trans_compare(struct expr *e, enum expr_type type, struct symbol *sym);
|
|
|
|
void expr_fprint(struct expr *e, FILE *out);
|
|
struct gstr; /* forward */
|
|
void expr_gstr_print(struct expr *e, struct gstr *gs);
|
|
void expr_gstr_print_revdep(struct expr *e, struct gstr *gs,
|
|
tristate pr_type, const char *title);
|
|
|
|
static inline int expr_is_yes(struct expr *e)
|
|
{
|
|
return !e || (e->type == E_SYMBOL && e->left.sym == &symbol_yes);
|
|
}
|
|
|
|
static inline int expr_is_no(struct expr *e)
|
|
{
|
|
return e && (e->type == E_SYMBOL && e->left.sym == &symbol_no);
|
|
}
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* EXPR_H */
|