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ARC: MWDT: enable back BUILD_ASSERT macro

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BUILD_ASSERT macro was disabled for MWDT toolchain from the
moment of adding MWDT support to Zephyr. Built-in _Static_assert
is now working fine for the most of the cases with MWDT toolchain
so we can use it in BUILD_ASSERT.

The only exception is _ARCH_MEM_PARTITION_ALIGN_CHECK macro
as it often used with variable addresses as parameters
which need to be checked at compile time. We disable
_ARCH_MEM_PARTITION_ALIGN_CHECK for MWDT toolchain so we can use
BUILD_ASSERT in other places.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Evgeniy Paltsev <PaltsevEvgeniy@gmail.com>
This commit is contained in:
Evgeniy Paltsev 2021-10-06 20:07:15 +03:00 • committed by Christopher Friedt
commit 235a98e371
2 changed files with 12 additions and 6 deletions
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7
include/arch/arc/arch.h
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@ -279,6 +279,12 @@ BUILD_ASSERT(CONFIG_PRIVILEGED_STACK_SIZE % Z_ARC_MPU_ALIGN == 0,
#define K_MEM_PARTITION_IS_EXECUTABLE(attr) \
((attr) & (AUX_MPU_ATTR_KE | AUX_MPU_ATTR_UE))
/*
* BUILD_ASSERT in case of MWDT is a bit more picky in performing compile-time check.
* For example it can't evaluate variable address at build time like GCC toolchain can do.
* That's why we don't provide _ARCH_MEM_PARTITION_ALIGN_CHECK for MWDT toolchain.
*/
#ifndef __CCAC__
#if CONFIG_ARC_MPU_VER == 2
#define _ARCH_MEM_PARTITION_ALIGN_CHECK(start, size) \
BUILD_ASSERT(!(((size) & ((size) - 1))) && (size) >= Z_ARC_MPU_ALIGN \
@ -295,6 +301,7 @@ BUILD_ASSERT(CONFIG_PRIVILEGED_STACK_SIZE % Z_ARC_MPU_ALIGN == 0,
" and greater than or equal to 32." \
"start address of the partition must align with 32.")
#endif
#endif /* __CCAC__ */
#endif /* CONFIG_ARC_MPU*/
/* Typedef for the k_mem_partition attribute*/

11
include/toolchain/mwdt.h
View file

@ -84,13 +84,12 @@
#include <toolchain/gcc.h>
/* Metaware toolchain has _Static_assert. However it not able to calculate
* conditional expression in build time for some realy complex cases. ARC GNU
* toolchain works fine in this cases, so it looks like MWDT bug. So, disable
* BUILD_ASSERT macro until we fix that issue in MWDT toolchain.
*/
#undef BUILD_ASSERT
#define BUILD_ASSERT(EXPR, MSG...)
#ifdef __cplusplus
#define BUILD_ASSERT(EXPR, MSG...) static_assert(EXPR, "" MSG)
#else
#define BUILD_ASSERT(EXPR, MSG...) _Static_assert(EXPR, "" MSG)
#endif
#define __builtin_arc_nop() _nop()