/* * arch/alpha/lib/ev67-strlen.S * 21264 version by Rick Gorton * * Finds length of a 0-terminated string. Optimized for the * Alpha architecture: * * - memory accessed as aligned quadwords only * - uses bcmpge to compare 8 bytes in parallel * * Much of the information about 21264 scheduling/coding comes from: * Compiler Writer's Guide for the Alpha 21264 * abbreviated as 'CWG' in other comments here * ftp.digital.com/pub/Digital/info/semiconductor/literature/dsc-library.html * Scheduling notation: * E - either cluster * U - upper subcluster; U0 - subcluster U0; U1 - subcluster U1 * L - lower subcluster; L0 - subcluster L0; L1 - subcluster L1 */ .set noreorder .set noat .globl strlen .ent strlen .align 4 strlen: ldq_u $1, 0($16) # L : load first quadword ($16 may be misaligned) lda $2, -1($31) # E : insqh $2, $16, $2 # U : andnot $16, 7, $0 # E : or $2, $1, $1 # E : cmpbge $31, $1, $2 # E : $2 <- bitmask: bit i == 1 <==> i-th byte == 0 nop # E : bne $2, $found # U : $loop: ldq $1, 8($0) # L : addq $0, 8, $0 # E : addr += 8 cmpbge $31, $1, $2 # E : beq $2, $loop # U : $found: cttz $2, $3 # U0 : addq $0, $3, $0 # E : subq $0, $16, $0 # E : ret $31, ($26) # L0 : .end strlen -loop-back'>packet-loop-back net-next plumbingsTobias Klauser
summaryrefslogtreecommitdiff
path: root/tools/perf/ui/keysyms.h
diff options
context:
space:
mode:
authorCharles Keepax <ckeepax@opensource.wolfsonmicro.com>2016-11-10 10:45:18 +0000
committerMark Brown <broonie@kernel.org>2016-11-10 17:28:32 +0000
commit85b037442e3f0e84296ab1010fd6b057eee18496 (patch)
treeb745f3f22cbd45af2039a004eb3f21d530afdc8b /tools/perf/ui/keysyms.h
parent1001354ca34179f3db924eb66672442a173147dc (diff)
regulators: helpers: Fix handling of bypass_val_on in get_bypass_regmap
The handling of bypass_val_on that was added in regulator_get_bypass_regmap is done unconditionally however several drivers don't define a value for bypass_val_on. This results in those drivers reporting bypass being enabled when it is not. In regulator_set_bypass_regmap we use bypass_mask if bypass_val_on is zero. This patch adds similar handling in regulator_get_bypass_regmap. Fixes: commit dd1a571daee7 ("regulator: helpers: Ensure bypass register field matches ON value") Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'tools/perf/ui/keysyms.h')