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/* SPDX-License-Identifier: GPL-2.0-only */
#ifndef __ASSERT_H__
#define __ASSERT_H__
#include <arch/hlt.h>
#include <console/console.h>
#include <stdint.h>
/* TODO: Fix vendorcode headers to not define macros coreboot uses or to be more
properly isolated. */
#ifdef ASSERT
#undef ASSERT
#endif
/* Do not use filenames nor line numbers on timeless builds, to preserve reproducibility */
#if ENV_TIMELESS
#define __ASSERT_FILE__ "(filenames not available on timeless builds)"
#define __ASSERT_LINE__ 404
#else
#define __ASSERT_FILE__ __FILE__
#define __ASSERT_LINE__ __LINE__
#endif
#ifndef _PORTING_H_ /* TODO: Isolate AGESA properly. */
#define __build_time_assert(x) \
(__builtin_constant_p(x) ? ((x) ? 1 : dead_code_t(int)) : 0)
#else
#define __build_time_assert(x) 0
#endif
/* GCC and CAR versions */
#define ASSERT(x) { \
if (!__build_time_assert(x) && !(x)) { \
printk(BIOS_EMERG, \
"ASSERTION ERROR: file '%s', line %d\n", \
__ASSERT_FILE__, __ASSERT_LINE__); \
if (CONFIG(FATAL_ASSERTS)) \
hlt(); \
} \
}
#define ASSERT_MSG(x, msg) { \
if (!__build_time_assert(x) && !(x)) { \
printk(BIOS_EMERG, \
"ASSERTION ERROR: file '%s', line %d\n", \
__ASSERT_FILE__, __ASSERT_LINE__); \
printk(BIOS_EMERG, "%s", msg); \
if (CONFIG(FATAL_ASSERTS)) \
hlt(); \
} \
}
#define BUG() { \
printk(BIOS_EMERG, \
"ERROR: BUG ENCOUNTERED at file '%s', line %d\n", \
__ASSERT_FILE__, __ASSERT_LINE__); \
if (CONFIG(FATAL_ASSERTS)) \
hlt(); \
}
#define assert(statement) ASSERT(statement)
/*
* These macros can be used to assert that a certain branch of code is dead and
* will be compile-time eliminated. This differs from _Static_assert(), which
* will generate a compiler error even if the scope it was called from is dead
* code. This may be useful to double-check things like constants that are only
* valid if a certain Kconfig option is set.
*
* The error message when this hits will look like this:
*
* ramstage/lib/bootmode.o: In function `display_init_required':
* bootmode.c:42: undefined reference to `_dead_code_assertion_failed'
*/
extern void _dead_code_assertion_failed(void) __attribute__((noreturn));
#define dead_code() _dead_code_assertion_failed()
/* This can be used in the context of an expression of type 'type'. */
#define dead_code_t(type) ({ \
dead_code(); \
*(type *)(uintptr_t)0; \
})
#ifdef __x86_64__
#define pointer_to_uint32_safe(x) ({ \
if ((uintptr_t)(x) > 0xffffffffUL) \
die("Cast from pointer to uint32_t overflows"); \
(uint32_t)(uintptr_t)(x); \
})
#else
#define pointer_to_uint32_safe(x) ({ \
(uint32_t)(uintptr_t)(x); \
})
#endif
#endif // __ASSERT_H__
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