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