Lines Matching +full:zero +full:- +full:based

1 // SPDX-License-Identifier: GPL-2.0-or-later
3  * Test cases for compiler-based stack variable zeroing via
4  * -ftrivial-auto-var-init={zero,pattern} or CONFIG_GCC_PLUGIN_STRUCTLEAK*.
6  * "Running tests with kunit_tool" at Documentation/dev-tools/kunit/start.rst
7  *	./tools/testing/kunit/kunit.py run stackinit [--raw_output] \
8  *		--make_option LLVM=1 \
9  *		--kconfig_add CONFIG_INIT_STACK_ALL_ZERO=y
89 #define ZERO_CLONE_SCALAR(zero)		memset(&(zero), 0x00, sizeof(zero))  argument
90 #define ZERO_CLONE_STRING(zero)		memset(&(zero), 0x00, sizeof(zero))  argument
95 #define ZERO_CLONE_STRUCT(zero)				\  argument
97 		memset(&(zero), 0xFF, sizeof(zero));	\
98 		zero.one = 0;				\
99 		zero.two = 0;				\
100 		zero.three = 0;				\
101 		zero.four = 0;				\
103 #define ZERO_CLONE_UNION(zero)		ZERO_CLONE_STRUCT(zero)  argument
122 #define __dynamic_partial		{ .two = arg->two, }
123 #define __dynamic_all			{ .one = arg->one,		\
124 					  .two = arg->two,		\
125 					  .three = arg->three,		\
126 					  .four = arg->four,		\
190  * pattern bytes are compiler, architecture, and type based,
207 	var_type zero INIT_CLONE_ ## which;			\
212 	BUILD_BUG_ON(sizeof(zero) > MAX_VAR_SIZE);		\
214 	/* Fill clone type with zero for per-field init. */	\
215 	ZERO_CLONE_ ## which(zero);				\
220 				FETCH_ARG_ ## which(zero));	\
226 	/* Extract stack-defined variable contents. */		\
228 				FETCH_ARG_ ## which(zero));	\
244 		(int)((ssize_t)(uintptr_t)fill_start -		\
259 /* no-op to force compiler into ignoring "uninitialized" vars */\
299 	return (int)buf[0] | (int)buf[sizeof(buf) - 1];		\
334 	/* "sizeof(unsigned long) - 1" byte padding hole here. */
437 DEFINE_SCALAR_TESTS(zero, ALWAYS_PASS);
438 DEFINE_STRUCT_TESTS(zero, ALWAYS_PASS);
440 DEFINE_UNION_TESTS(zero, ALWAYS_PASS);
471 		 * warning, build with -Wno-switch-unreachable  in __leaf_switch_none()
519  * non-code areas (i.e. in a switch statement before the first "case").
545 	KUNIT_test_scalars(zero),
546 	KUNIT_test_structs(zero),
548 	KUNIT_test_unions(zero),
593 MODULE_DESCRIPTION("Test cases for compiler-based stack variable zeroing");