mirror of
https://github.com/AsahiLinux/u-boot
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Since ARMv5, the clz instruction allows for efficient implementation of ffs/fls with builtins. Until ARMv7 (with Thumb-2), this instruction is only available in ARM mode. LTO makes it difficult to force specific functions to be in ARM mode, as it is effectively a form of very aggressive inlining. To work around this, fls/ffs are implemented in assembly for ARMv5 and ARMv6 when compiling U-Boot in Thumb mode. Overall, this saves around 75 bytes per call. This code is synced with v5.15 of the Linux kernel. Signed-off-by: Sean Anderson <sean.anderson@seco.com> Reviewed-by: Tom Rini <trini@konsulko.com> |
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| .. | ||
| bitops | ||
| atomic-long.h | ||
| atomic.h | ||
| bitsperlong.h | ||
| global_data.h | ||
| gpio.h | ||
| int-ll64.h | ||
| io.h | ||
| ioctl.h | ||
| pe.h | ||
| sections.h | ||
| signal.h | ||
| u-boot.h | ||
| unaligned.h | ||