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
81 #define ZERO_CLONE_SCALAR(zero)		memset(&(zero), 0x00, sizeof(zero))  argument
82 #define ZERO_CLONE_STRING(zero)		memset(&(zero), 0x00, sizeof(zero))  argument
87 #define ZERO_CLONE_STRUCT(zero)				\  argument
89 		memset(&(zero), 0xFF, sizeof(zero));	\
90 		zero.one = 0;				\
91 		zero.two = 0;				\
92 		zero.three = 0;				\
93 		zero.four = 0;				\
112 #define __dynamic_partial		{ .two = arg->two, }
113 #define __dynamic_all			{ .one = arg->one,		\
114 					  .two = arg->two,		\
115 					  .three = arg->three,		\
116 					  .four = arg->four,		\
160 	var_type zero INIT_CLONE_ ## which;			\
165 	BUILD_BUG_ON(sizeof(zero) > MAX_VAR_SIZE);		\
167 	/* Fill clone type with zero for per-field init. */	\
168 	ZERO_CLONE_ ## which(zero);				\
173 				FETCH_ARG_ ## which(zero));	\
179 	/* Extract stack-defined variable contents. */		\
181 				FETCH_ARG_ ## which(zero));	\
196 		(int)((ssize_t)(uintptr_t)fill_start -		\
211 /* no-op to force compiler into ignoring "uninitialized" vars */\
251 	return (int)buf[0] | (int)buf[sizeof(buf) - 1];		\
286 	/* "sizeof(unsigned long) - 1" byte padding hole here. */
347 DEFINE_SCALAR_TESTS(zero, ALWAYS_PASS);
348 DEFINE_STRUCT_TESTS(zero, ALWAYS_PASS);
372 		 * warning, build with -Wno-switch-unreachable  in __leaf_switch_none()
420  * non-code areas (i.e. in a switch statement before the first "case").
441 	KUNIT_test_scalars(zero),
442 	KUNIT_test_structs(zero),
475 MODULE_DESCRIPTION("Test cases for compiler-based stack variable zeroing");