diff options
Diffstat (limited to 'arch/arc/lib/strcpy-700.S')
| -rw-r--r-- | arch/arc/lib/strcpy-700.S | 67 |
1 files changed, 0 insertions, 67 deletions
diff --git a/arch/arc/lib/strcpy-700.S b/arch/arc/lib/strcpy-700.S deleted file mode 100644 index 41bb53e501..0000000000 --- a/arch/arc/lib/strcpy-700.S +++ /dev/null @@ -1,67 +0,0 @@ -/* - * Copyright (C) 2004, 2007-2010, 2011-2014 Synopsys, Inc. All rights reserved. - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -/* - * If dst and src are 4 byte aligned, copy 8 bytes at a time. - * If the src is 4, but not 8 byte aligned, we first read 4 bytes to get - * it 8 byte aligned. Thus, we can do a little read-ahead, without - * dereferencing a cache line that we should not touch. - * Note that short and long instructions have been scheduled to avoid - * branch stalls. - * The beq_s to r3z could be made unaligned & long to avoid a stall - * there, but it is not likely to be taken often, and it would also be likely - * to cost an unaligned mispredict at the next call. - */ - -.global strcpy -.align 4 -strcpy: - or %r2, %r0, %r1 - bmsk_s %r2, %r2, 1 - brne.d %r2, 0, charloop - mov_s %r10, %r0 - ld_s %r3, [%r1, 0] - mov %r8, 0x01010101 - bbit0.d %r1, 2, loop_start - ror %r12, %r8 - sub %r2, %r3, %r8 - bic_s %r2, %r2, %r3 - tst_s %r2,%r12 - bne r3z - mov_s %r4,%r3 - .balign 4 -loop: - ld.a %r3, [%r1, 4] - st.ab %r4, [%r10, 4] -loop_start: - ld.a %r4, [%r1, 4] - sub %r2, %r3, %r8 - bic_s %r2, %r2, %r3 - tst_s %r2, %r12 - bne_s r3z - st.ab %r3, [%r10, 4] - sub %r2, %r4, %r8 - bic %r2, %r2, %r4 - tst %r2, %r12 - beq loop - mov_s %r3, %r4 -#ifdef __LITTLE_ENDIAN__ -r3z: bmsk.f %r1, %r3, 7 - lsr_s %r3, %r3, 8 -#else /* __BIG_ENDIAN__ */ -r3z: lsr.f %r1, %r3, 24 - asl_s %r3, %r3, 8 -#endif /* _ENDIAN__ */ - bne.d r3z - stb.ab %r1, [%r10, 1] - j_s [%blink] - - .balign 4 -charloop: - ldb.ab %r3, [%r1, 1] - brne.d %r3, 0, charloop - stb.ab %r3, [%r10, 1] - j [%blink] |