| 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
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| 2 | .align 32 |
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| 3 | .globl __flushw_user |
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| 4 | .type __flushw_user,#function |
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| 5 | __flushw_user: |
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| 6 | rdpr %otherwin, %g1 |
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| 7 | brz,pn %g1, 2f |
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| 8 | clr %g2 |
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| 9 | 1: save %sp, -128, %sp |
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| 10 | rdpr %otherwin, %g1 |
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| 11 | brnz,pt %g1, 1b |
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| 12 | add %g2, 1, %g2 |
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| 13 | 1: sub %g2, 1, %g2 |
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| 14 | brnz,pt %g2, 1b |
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| 15 | restore %g0, %g0, %g0 |
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| 16 | 2: retl |
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| 17 | nop |
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| 18 | .size __flushw_user,.-__flushw_user |
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| 19 | EXPORT_SYMBOL(__flushw_user) |
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| 20 | |
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| 21 | /* Flush %fp and %i7 to the stack for all register |
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| 22 | * windows active inside of the cpu. This allows |
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| 23 | * show_stack_trace() to avoid using an expensive |
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| 24 | * 'flushw'. |
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| 25 | */ |
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| 26 | .globl stack_trace_flush |
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| 27 | .type stack_trace_flush,#function |
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| 28 | stack_trace_flush: |
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| 29 | rdpr %pstate, %o0 |
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| 30 | wrpr %o0, PSTATE_IE, %pstate |
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| 31 | |
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| 32 | rdpr %cwp, %g1 |
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| 33 | rdpr %canrestore, %g2 |
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| 34 | sub %g1, 1, %g3 |
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| 35 | |
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| 36 | 1: brz,pn %g2, 2f |
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| 37 | sub %g2, 1, %g2 |
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| 38 | wrpr %g3, %cwp |
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| 39 | stx %fp, [%sp + STACK_BIAS + RW_V9_I6] |
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| 40 | stx %i7, [%sp + STACK_BIAS + RW_V9_I7] |
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| 41 | ba,pt %xcc, 1b |
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| 42 | sub %g3, 1, %g3 |
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| 43 | |
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| 44 | 2: wrpr %g1, %cwp |
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| 45 | wrpr %o0, %pstate |
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| 46 | |
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| 47 | retl |
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| 48 | nop |
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| 49 | .size stack_trace_flush,.-stack_trace_flush |
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| 50 | |
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| 51 | #ifdef CONFIG_SMP |
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| 52 | .globl hard_smp_processor_id |
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| 53 | .type hard_smp_processor_id,#function |
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| 54 | hard_smp_processor_id: |
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| 55 | #endif |
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| 56 | .globl real_hard_smp_processor_id |
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| 57 | .type real_hard_smp_processor_id,#function |
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| 58 | real_hard_smp_processor_id: |
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| 59 | __GET_CPUID(%o0) |
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| 60 | retl |
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| 61 | nop |
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| 62 | #ifdef CONFIG_SMP |
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| 63 | .size hard_smp_processor_id,.-hard_smp_processor_id |
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| 64 | #endif |
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| 65 | .size real_hard_smp_processor_id,.-real_hard_smp_processor_id |
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| 66 | EXPORT_SYMBOL_GPL(real_hard_smp_processor_id) |
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| 67 | |
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