mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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af2d22254e
Documentation/process/changes.rst says the minimal GCC version is 4.9. Hence, BUILDING_GCC_VERSION is greater than or equal to 4009. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Signed-off-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20201202134929.99883-1-masahiroy@kernel.org
267 lines
6.7 KiB
C++
267 lines
6.7 KiB
C++
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Generator for IPA pass related boilerplate code/data
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*
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* Supports gcc 4.5-6
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*
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* Usage:
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*
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* 1. before inclusion define PASS_NAME
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* 2. before inclusion define NO_* for unimplemented callbacks
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* NO_GENERATE_SUMMARY
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* NO_READ_SUMMARY
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* NO_WRITE_SUMMARY
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* NO_READ_OPTIMIZATION_SUMMARY
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* NO_WRITE_OPTIMIZATION_SUMMARY
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* NO_STMT_FIXUP
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* NO_FUNCTION_TRANSFORM
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* NO_VARIABLE_TRANSFORM
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* NO_GATE
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* NO_EXECUTE
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* 3. before inclusion define PROPERTIES_* and *TODO_FLAGS_* to override
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* the default 0 values
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* 4. for convenience, all the above will be undefined after inclusion!
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* 5. the only exported name is make_PASS_NAME_pass() to register with gcc
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*/
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#ifndef PASS_NAME
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#error at least PASS_NAME must be defined
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#else
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#define __GCC_PLUGIN_STRINGIFY(n) #n
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#define _GCC_PLUGIN_STRINGIFY(n) __GCC_PLUGIN_STRINGIFY(n)
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#define _GCC_PLUGIN_CONCAT2(x, y) x ## y
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#define _GCC_PLUGIN_CONCAT3(x, y, z) x ## y ## z
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#define __PASS_NAME_PASS_DATA(n) _GCC_PLUGIN_CONCAT2(n, _pass_data)
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#define _PASS_NAME_PASS_DATA __PASS_NAME_PASS_DATA(PASS_NAME)
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#define __PASS_NAME_PASS(n) _GCC_PLUGIN_CONCAT2(n, _pass)
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#define _PASS_NAME_PASS __PASS_NAME_PASS(PASS_NAME)
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#define _PASS_NAME_NAME _GCC_PLUGIN_STRINGIFY(PASS_NAME)
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#define __MAKE_PASS_NAME_PASS(n) _GCC_PLUGIN_CONCAT3(make_, n, _pass)
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#define _MAKE_PASS_NAME_PASS __MAKE_PASS_NAME_PASS(PASS_NAME)
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#ifdef NO_GENERATE_SUMMARY
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#define _GENERATE_SUMMARY NULL
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#else
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#define __GENERATE_SUMMARY(n) _GCC_PLUGIN_CONCAT2(n, _generate_summary)
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#define _GENERATE_SUMMARY __GENERATE_SUMMARY(PASS_NAME)
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#endif
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#ifdef NO_READ_SUMMARY
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#define _READ_SUMMARY NULL
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#else
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#define __READ_SUMMARY(n) _GCC_PLUGIN_CONCAT2(n, _read_summary)
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#define _READ_SUMMARY __READ_SUMMARY(PASS_NAME)
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#endif
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#ifdef NO_WRITE_SUMMARY
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#define _WRITE_SUMMARY NULL
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#else
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#define __WRITE_SUMMARY(n) _GCC_PLUGIN_CONCAT2(n, _write_summary)
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#define _WRITE_SUMMARY __WRITE_SUMMARY(PASS_NAME)
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#endif
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#ifdef NO_READ_OPTIMIZATION_SUMMARY
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#define _READ_OPTIMIZATION_SUMMARY NULL
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#else
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#define __READ_OPTIMIZATION_SUMMARY(n) _GCC_PLUGIN_CONCAT2(n, _read_optimization_summary)
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#define _READ_OPTIMIZATION_SUMMARY __READ_OPTIMIZATION_SUMMARY(PASS_NAME)
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#endif
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#ifdef NO_WRITE_OPTIMIZATION_SUMMARY
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#define _WRITE_OPTIMIZATION_SUMMARY NULL
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#else
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#define __WRITE_OPTIMIZATION_SUMMARY(n) _GCC_PLUGIN_CONCAT2(n, _write_optimization_summary)
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#define _WRITE_OPTIMIZATION_SUMMARY __WRITE_OPTIMIZATION_SUMMARY(PASS_NAME)
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#endif
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#ifdef NO_STMT_FIXUP
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#define _STMT_FIXUP NULL
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#else
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#define __STMT_FIXUP(n) _GCC_PLUGIN_CONCAT2(n, _stmt_fixup)
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#define _STMT_FIXUP __STMT_FIXUP(PASS_NAME)
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#endif
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#ifdef NO_FUNCTION_TRANSFORM
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#define _FUNCTION_TRANSFORM NULL
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#else
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#define __FUNCTION_TRANSFORM(n) _GCC_PLUGIN_CONCAT2(n, _function_transform)
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#define _FUNCTION_TRANSFORM __FUNCTION_TRANSFORM(PASS_NAME)
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#endif
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#ifdef NO_VARIABLE_TRANSFORM
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#define _VARIABLE_TRANSFORM NULL
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#else
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#define __VARIABLE_TRANSFORM(n) _GCC_PLUGIN_CONCAT2(n, _variable_transform)
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#define _VARIABLE_TRANSFORM __VARIABLE_TRANSFORM(PASS_NAME)
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#endif
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#ifdef NO_GATE
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#define _GATE NULL
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#define _HAS_GATE false
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#else
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#define __GATE(n) _GCC_PLUGIN_CONCAT2(n, _gate)
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#define _GATE __GATE(PASS_NAME)
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#define _HAS_GATE true
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#endif
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#ifdef NO_EXECUTE
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#define _EXECUTE NULL
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#define _HAS_EXECUTE false
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#else
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#define __EXECUTE(n) _GCC_PLUGIN_CONCAT2(n, _execute)
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#define _EXECUTE __EXECUTE(PASS_NAME)
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#define _HAS_EXECUTE true
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#endif
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#ifndef PROPERTIES_REQUIRED
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#define PROPERTIES_REQUIRED 0
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#endif
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#ifndef PROPERTIES_PROVIDED
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#define PROPERTIES_PROVIDED 0
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#endif
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#ifndef PROPERTIES_DESTROYED
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#define PROPERTIES_DESTROYED 0
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#endif
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#ifndef TODO_FLAGS_START
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#define TODO_FLAGS_START 0
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#endif
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#ifndef TODO_FLAGS_FINISH
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#define TODO_FLAGS_FINISH 0
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#endif
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#ifndef FUNCTION_TRANSFORM_TODO_FLAGS_START
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#define FUNCTION_TRANSFORM_TODO_FLAGS_START 0
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#endif
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namespace {
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static const pass_data _PASS_NAME_PASS_DATA = {
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.type = IPA_PASS,
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.name = _PASS_NAME_NAME,
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.optinfo_flags = OPTGROUP_NONE,
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#if BUILDING_GCC_VERSION >= 5000
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#elif BUILDING_GCC_VERSION == 4009
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.has_gate = _HAS_GATE,
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.has_execute = _HAS_EXECUTE,
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#else
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.gate = _GATE,
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.execute = _EXECUTE,
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.sub = NULL,
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.next = NULL,
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.static_pass_number = 0,
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#endif
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.tv_id = TV_NONE,
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.properties_required = PROPERTIES_REQUIRED,
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.properties_provided = PROPERTIES_PROVIDED,
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.properties_destroyed = PROPERTIES_DESTROYED,
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.todo_flags_start = TODO_FLAGS_START,
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.todo_flags_finish = TODO_FLAGS_FINISH,
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};
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class _PASS_NAME_PASS : public ipa_opt_pass_d {
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public:
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_PASS_NAME_PASS() : ipa_opt_pass_d(_PASS_NAME_PASS_DATA,
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g,
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_GENERATE_SUMMARY,
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_WRITE_SUMMARY,
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_READ_SUMMARY,
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_WRITE_OPTIMIZATION_SUMMARY,
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_READ_OPTIMIZATION_SUMMARY,
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_STMT_FIXUP,
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FUNCTION_TRANSFORM_TODO_FLAGS_START,
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_FUNCTION_TRANSFORM,
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_VARIABLE_TRANSFORM) {}
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#ifndef NO_GATE
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#if BUILDING_GCC_VERSION >= 5000
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virtual bool gate(function *) { return _GATE(); }
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#else
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virtual bool gate(void) { return _GATE(); }
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#endif
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virtual opt_pass *clone() { return new _PASS_NAME_PASS(); }
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#ifndef NO_EXECUTE
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#if BUILDING_GCC_VERSION >= 5000
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virtual unsigned int execute(function *) { return _EXECUTE(); }
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#else
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virtual unsigned int execute(void) { return _EXECUTE(); }
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#endif
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#endif
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};
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}
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opt_pass *_MAKE_PASS_NAME_PASS(void)
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{
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return new _PASS_NAME_PASS();
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}
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#else
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struct opt_pass *_MAKE_PASS_NAME_PASS(void)
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{
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return &_PASS_NAME_PASS.pass;
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}
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#endif
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/* clean up user provided defines */
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#undef PASS_NAME
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#undef NO_GENERATE_SUMMARY
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#undef NO_WRITE_SUMMARY
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#undef NO_READ_SUMMARY
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#undef NO_WRITE_OPTIMIZATION_SUMMARY
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#undef NO_READ_OPTIMIZATION_SUMMARY
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#undef NO_STMT_FIXUP
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#undef NO_FUNCTION_TRANSFORM
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#undef NO_VARIABLE_TRANSFORM
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#undef NO_GATE
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#undef NO_EXECUTE
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#undef FUNCTION_TRANSFORM_TODO_FLAGS_START
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#undef PROPERTIES_DESTROYED
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#undef PROPERTIES_PROVIDED
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#undef PROPERTIES_REQUIRED
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#undef TODO_FLAGS_FINISH
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#undef TODO_FLAGS_START
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/* clean up generated defines */
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#undef _EXECUTE
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#undef __EXECUTE
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#undef _FUNCTION_TRANSFORM
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#undef __FUNCTION_TRANSFORM
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#undef _GATE
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#undef __GATE
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#undef _GCC_PLUGIN_CONCAT2
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#undef _GCC_PLUGIN_CONCAT3
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#undef _GCC_PLUGIN_STRINGIFY
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#undef __GCC_PLUGIN_STRINGIFY
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#undef _GENERATE_SUMMARY
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#undef __GENERATE_SUMMARY
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#undef _HAS_EXECUTE
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#undef _HAS_GATE
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#undef _MAKE_PASS_NAME_PASS
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#undef __MAKE_PASS_NAME_PASS
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#undef _PASS_NAME_NAME
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#undef _PASS_NAME_PASS
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#undef __PASS_NAME_PASS
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#undef _PASS_NAME_PASS_DATA
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#undef __PASS_NAME_PASS_DATA
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#undef _READ_OPTIMIZATION_SUMMARY
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#undef __READ_OPTIMIZATION_SUMMARY
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#undef _READ_SUMMARY
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#undef __READ_SUMMARY
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#undef _STMT_FIXUP
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#undef __STMT_FIXUP
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#undef _VARIABLE_TRANSFORM
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#undef __VARIABLE_TRANSFORM
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#undef _WRITE_OPTIMIZATION_SUMMARY
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#undef __WRITE_OPTIMIZATION_SUMMARY
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#undef _WRITE_SUMMARY
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#undef __WRITE_SUMMARY
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#endif /* PASS_NAME */
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