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63 lines
1.1 KiB
63 lines
1.1 KiB
/* SPDX-License-Identifier: GPL-2.0-only */ |
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/* |
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* Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com) |
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*/ |
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#include <linux/linkage.h> |
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ENTRY_CFI(memcpy) |
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or r3,r0,r1 |
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asl_s r3,r3,30 |
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mov_s r5,r0 |
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brls.d r2,r3,.Lcopy_bytewise |
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sub.f r3,r2,1 |
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ld_s r12,[r1,0] |
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asr.f lp_count,r3,3 |
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bbit0.d r3,2,.Lnox4 |
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bmsk_s r2,r2,1 |
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st.ab r12,[r5,4] |
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ld.a r12,[r1,4] |
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.Lnox4: |
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lppnz .Lendloop |
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ld_s r3,[r1,4] |
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st.ab r12,[r5,4] |
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ld.a r12,[r1,8] |
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st.ab r3,[r5,4] |
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.Lendloop: |
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breq r2,0,.Last_store |
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ld r3,[r5,0] |
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#ifdef __LITTLE_ENDIAN__ |
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add3 r2,-1,r2 |
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; uses long immediate |
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xor_s r12,r12,r3 |
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bmsk r12,r12,r2 |
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xor_s r12,r12,r3 |
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#else /* BIG ENDIAN */ |
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sub3 r2,31,r2 |
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; uses long immediate |
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xor_s r3,r3,r12 |
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bmsk r3,r3,r2 |
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xor_s r12,r12,r3 |
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#endif /* ENDIAN */ |
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.Last_store: |
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j_s.d [blink] |
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st r12,[r5,0] |
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.balign 4 |
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.Lcopy_bytewise: |
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jcs [blink] |
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ldb_s r12,[r1,0] |
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lsr.f lp_count,r3 |
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bhs_s .Lnox1 |
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stb.ab r12,[r5,1] |
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ldb.a r12,[r1,1] |
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.Lnox1: |
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lppnz .Lendbloop |
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ldb_s r3,[r1,1] |
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stb.ab r12,[r5,1] |
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ldb.a r12,[r1,2] |
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stb.ab r3,[r5,1] |
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.Lendbloop: |
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j_s.d [blink] |
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stb r12,[r5,0] |
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END_CFI(memcpy)
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