From 19c22f3a29fa8669c477f20a65f6c7c27108972a Mon Sep 17 00:00:00 2001 From: Chris Metcalf Date: Tue, 6 Oct 2015 13:35:10 -0400 Subject: word-at-a-time.h: fix some Kbuild files arch/tile added word-at-a-time.h after the patch that added generic-y entries; the generic-y entry is now stale. arch/h8300 is newer than the generic-y patch for word-at-a-time.h, and needs a generic-y entry. arch/powerpc seems to have gotten a generic-y entry by mistake in the first patch; this change removes it. Signed-off-by: Chris Metcalf --- arch/tile/include/asm/Kbuild | 1 - 1 file changed, 1 deletion(-) (limited to 'arch/tile') diff --git a/arch/tile/include/asm/Kbuild b/arch/tile/include/asm/Kbuild index 0b6cacaa..ba35c41 100644 --- a/arch/tile/include/asm/Kbuild +++ b/arch/tile/include/asm/Kbuild @@ -40,5 +40,4 @@ generic-y += termbits.h generic-y += termios.h generic-y += trace_clock.h generic-y += types.h -generic-y += word-at-a-time.h generic-y += xor.h -- cgit v1.1 From c753bf34c94e5ac901e625e52f47320eeec4de2d Mon Sep 17 00:00:00 2001 From: Chris Metcalf Date: Tue, 6 Oct 2015 14:20:45 -0400 Subject: word-at-a-time.h: support zero_bytemask() on alpha and tile Both alpha and tile needed implementations of zero_bytemask. The alpha version is untested. Signed-off-by: Chris Metcalf --- arch/tile/include/asm/word-at-a-time.h | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'arch/tile') diff --git a/arch/tile/include/asm/word-at-a-time.h b/arch/tile/include/asm/word-at-a-time.h index 9e5ce0d..b66a693 100644 --- a/arch/tile/include/asm/word-at-a-time.h +++ b/arch/tile/include/asm/word-at-a-time.h @@ -6,7 +6,7 @@ struct word_at_a_time { /* unused */ }; #define WORD_AT_A_TIME_CONSTANTS {} -/* Generate 0x01 byte values for non-zero bytes using a SIMD instruction. */ +/* Generate 0x01 byte values for zero bytes using a SIMD instruction. */ static inline unsigned long has_zero(unsigned long val, unsigned long *data, const struct word_at_a_time *c) { @@ -33,4 +33,10 @@ static inline long find_zero(unsigned long mask) #endif } +#ifdef __BIG_ENDIAN +#define zero_bytemask(mask) (~1ul << (63 - __builtin_clzl(mask))) +#else +#define zero_bytemask(mask) ((2ul << __builtin_ctzl(mask)) - 1) +#endif + #endif /* _ASM_WORD_AT_A_TIME_H */ -- cgit v1.1