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include: toolchain: Add LOG2CEIL macro

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This macro is referenced by most of the architecture linker scripts, yet
it is only defined in the Metaware toolchain linker header.

Signed-off-by: Bradley Bolen <bbolen@lexmark.com>
This commit is contained in:
Bradley Bolen 2021-05-13 12:49:14 -04:00 • committed by Christopher Friedt
commit d91e4a52de
1 changed files with 15 additions and 0 deletions
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15
include/toolchain/common.h
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@ -248,4 +248,19 @@
* @} * @}
*/ /* end of struct_section_apis */ */ /* end of struct_section_apis */
#define LOG2CEIL(x) \
((((x) <= 4) ? 2 : (((x) <= 8) ? 3 : (((x) <= 16) ? \
4 : (((x) <= 32) ? 5 : (((x) <= 64) ? 6 : (((x) <= 128) ? \
7 : (((x) <= 256) ? 8 : (((x) <= 512) ? 9 : (((x) <= 1024) ? \
10 : (((x) <= 2048) ? 11 : (((x) <= 4096) ? 12 : (((x) <= 8192) ? \
13 : (((x) <= 16384) ? 14 : (((x) <= 32768) ? 15:(((x) <= 65536) ? \
16 : (((x) <= 131072) ? 17 : (((x) <= 262144) ? 18:(((x) <= 524288) ? \
19 : (((x) <= 1048576) ? 20 : (((x) <= 2097152) ? \
21 : (((x) <= 4194304) ? 22 : (((x) <= 8388608) ? \
23 : (((x) <= 16777216) ? 24 : (((x) <= 33554432) ? \
25 : (((x) <= 67108864) ? 26 : (((x) <= 134217728) ? \
27 : (((x) <= 268435456) ? 28 : (((x) <= 536870912) ? \
29 : (((x) <= 1073741824) ? 30 : (((x) <= 2147483648) ? \
31 : 32)))))))))))))))))))))))))))))))
#endif /* ZEPHYR_INCLUDE_TOOLCHAIN_COMMON_H_ */ #endif /* ZEPHYR_INCLUDE_TOOLCHAIN_COMMON_H_ */