diff options
Diffstat (limited to 'sysdeps/arm/armv6/rawmemchr.S')
| -rw-r--r-- | sysdeps/arm/armv6/rawmemchr.S | 20 |
1 files changed, 8 insertions, 12 deletions
diff --git a/sysdeps/arm/armv6/rawmemchr.S b/sysdeps/arm/armv6/rawmemchr.S index 2fda9a8c9b..6c9d6de3b1 100644 --- a/sysdeps/arm/armv6/rawmemchr.S +++ b/sysdeps/arm/armv6/rawmemchr.S @@ -1,5 +1,5 @@ /* rawmemchr -- find a byte within an unsized memory block. - Copyright (C) 2013-2016 Free Software Foundation, Inc. + Copyright (C) 2013-2018 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -25,8 +25,7 @@ ENTRY (__rawmemchr) @ r0 = start of string @ r1 = character to match @ returns a pointer to the match, which must be present. - sfi_breg r0, \ - ldrb r2, [\B] @ load first byte asap + ldrb r2, [r0] @ load first byte asap @ To cater to long strings, we want to search through a few @ characters until we reach an aligned pointer. To cater to @@ -42,8 +41,7 @@ ENTRY (__rawmemchr) bxeq lr @ Loop until we find ... -1: sfi_breg r0, \ - ldrb r2, [\B, #1]! +1: ldrb r2, [r0, #1]! subs r3, r3, #1 @ ... the alignment point it ne cmpne r2, r1 @ ... or C @@ -56,16 +54,15 @@ ENTRY (__rawmemchr) add r0, r0, #1 @ So now we're aligned. - sfi_breg r0, \ - ldrd r2, r3, [\B], #8 + ldrd r2, r3, [r0], #8 orr r1, r1, r1, lsl #8 @ Replicate C to all bytes #ifdef ARCH_HAS_T2 movw ip, #0x0101 - sfi_pld r0, #64 + pld [r0, #64] movt ip, #0x0101 #else ldr ip, =0x01010101 - sfi_pld r0, #64 + pld [r0, #64] #endif orr r1, r1, r1, lsl #16 @@ -77,11 +74,10 @@ ENTRY (__rawmemchr) eor r3, r3, r1 uqsub8 r2, ip, r2 @ Find C uqsub8 r3, ip, r3 - sfi_pld r0, #128 + pld [r0, #128] orrs r3, r3, r2 @ Test both words for found it eq - sfi_breg r0, \ - ldrdeq r2, r3, [\B], #8 + ldrdeq r2, r3, [r0], #8 beq 2b @ Found something. Disambiguate between first and second words. |