| 1 | /* SPDX-License-Identifier: GPL-2.0 */
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| 2 | /* U3patch.S: Patch Ultra-I routines with Ultra-III variant.
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| 3 | *
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| 4 | * Copyright (C) 2004 David S. Miller <davem@redhat.com>
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| 5 | */
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| 6 |
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| 7 | |
| 8 | |
| 9 | |
| 10 | sethi %hi(NEW), %g1; \
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| 11 | or %g1, %lo(NEW), %g1; \
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| 12 | sethi %hi(OLD), %g2; \
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| 13 | or %g2, %lo(OLD), %g2; \
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| 14 | sub %g1, %g2, %g1; \
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| 15 | sethi %hi(BRANCH_ALWAYS), %g3; \
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| 16 | sll %g1, 11, %g1; \
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| 17 | srl %g1, 11 + 2, %g1; \
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| 18 | or %g3, %lo(BRANCH_ALWAYS), %g3; \
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| 19 | or %g3, %g1, %g3; \
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| 20 | stw %g3, [%g2]; \
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| 21 | sethi %hi(NOP), %g3; \
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| 22 | or %g3, %lo(NOP), %g3; \
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| 23 | stw %g3, [%g2 + 0x4]; \
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| 24 | flush %g2;
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| 25 |
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| 26 | .globl cheetah_patch_copyops
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| 27 | .type cheetah_patch_copyops, |
| 28 | cheetah_patch_copyops:
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| 29 | ULTRA3_DO_PATCH(memcpy, U3memcpy)
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| 30 | ULTRA3_DO_PATCH(raw_copy_from_user, U3copy_from_user)
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| 31 | ULTRA3_DO_PATCH(raw_copy_to_user, U3copy_to_user)
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| 32 | retl
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| 33 | nop
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| 34 | .size cheetah_patch_copyops,.-cheetah_patch_copyops
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