1 files changed, 0 insertions, 131 deletions
diff --git a/ports/sysdeps/arm/armv6/strrchr.S b/ports/sysdeps/arm/armv6/strrchr.S
deleted file mode 100644
index a1e753c11b..0000000000
--- a/ports/sysdeps/arm/armv6/strrchr.S
+++ /dev/null
@@ -1,131 +0,0 @@
-/* strrchr -- find the last occurence of C in a nul-terminated string
-   Copyright (C) 2013-2014 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
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library.  If not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#include <sysdep.h>
-
-	.syntax unified
-	.text
-
-ENTRY (strrchr)
-	@ r0 = start of string
-	@ r1 = character to match
-	@ returns NULL for no match, or a pointer to the match
-
-	mov	r3, r0
-	mov	r0, #0
-	uxtb	r1, r1
-
-	@ Loop a few times until we're aligned.
-	tst	r3, #7
-	beq	2f
-1:	sfi_breg r3, \
-	ldrb	r2, [\B], #1
-	cmp	r2, r1			@ Find the character
-	it	eq
-	subeq	r0, r3, #1
-	cmp	r2, #0			@ Find EOS
-	it	eq
-	bxeq	lr
-	tst	r3, #7			@ Find the aligment point
-	bne	1b
-
-	@ So now we're aligned.  Now we actually need a stack frame.
-2:	push	{ r4, r5, r6, r7 }
-	cfi_adjust_cfa_offset (16)
-	cfi_rel_offset (r4, 0)
-	cfi_rel_offset (r5, 4)
-	cfi_rel_offset (r6, 8)
-	cfi_rel_offset (r7, 12)
-
-	orr	r1, r1, r1, lsl #8	@ Replicate C to all bytes
-#ifdef ARCH_HAS_T2
-	movw	ip, #0x0101
-	movt	ip, #0x0101
-#else
-	ldr	ip, =0x01010101
-#endif
-	orr	r1, r1, r1, lsl #16
-	mov	r2, #0			@ No found bits yet
-
-	@ Loop searching for EOS and C, 8 bytes at a time.
-	@ Any time we find a match in a word, we copy the address of
-	@ the word to r0, and the found bits to r2.
-3:	sfi_breg r3, \
-	ldrd	r4, r5, [\B], #8
-	@ Subtracting (unsigned saturating) from 1 means result of 1 for
-	@ any byte that was originally zero and 0 otherwise.  Therefore
-	@ we consider the lsb of each byte the "found" bit.
-	uqsub8	r6, ip, r4		@ Find EOS
-	uqsub8	r7, ip, r5
-	eor	r4, r4, r1		@ Convert C bytes to 0
-	eor	r5, r5, r1
-	uqsub8	r4, ip, r4		@ Find C
-	uqsub8	r5, ip, r5
-	cmp	r6, #0			@ Found EOS, first word
-	bne	4f
-	cmp	r4, #0			@ Handle C, first word
-	itt	ne
-	subne	r0, r3, #8
-	movne	r2, r4
-	cmp	r7, #0			@ Found EOS, second word
-	bne	5f
-	cmp	r5, #0			@ Handle C, second word
-	itt	ne
-	subne	r0, r3, #4
-	movne	r2, r5
-	b	3b
-
-	@ Found EOS in second word; fold to first word.
-5:	add	r3, r3, #4		@ Dec pointer to 2nd word, with below
-	mov	r4, r5			@ Overwrite first word C found
-	mov	r6, r7			@ Overwrite first word EOS found
-
-	@ Found EOS.  Zap found C after EOS.
-4:	sub	r3, r3, #8		@ Decrement pointer to first word
-#ifdef __ARMEB__
-	@ Byte swap to be congruent with LE, which is easier from here on.
-	rev	r6, r6			@ Byte swap found EOS,
-	rev	r4, r4			@ ... this found C
-	rev	r2, r2			@ ... prev found C
-#endif
-	sub	r7, r6, #1		@ Toggle EOS lsb and below
-	eor	r6, r6, r7		@ All bits below and including lsb
-	ands	r4, r4, r6		@ Zap C above EOS
-	itt	ne
-	movne	r2, r4			@ Copy to result, if still non-zero
-	movne	r0, r3
-
-	pop	{ r4, r5, r6, r7 }
-	cfi_adjust_cfa_offset (-16)
-	cfi_restore (r4)
-	cfi_restore (r5)
-	cfi_restore (r6)
-	cfi_restore (r7)
-
-	@ Adjust the result pointer if we found a word containing C.
-	cmp	r2, #0
-	clz	r2, r2			@ Find the bit offset of the last C
-	itt	ne
-	rsbne	r2, r2, #32		@ Convert to a count from the right
-	addne	r0, r0, r2, lsr #3	@ Convert to byte offset and add.
-	bx	lr
-
-END (strrchr)
-
-weak_alias (strrchr, rindex)
-libc_hidden_builtin_def (strrchr)