67 lines
1.4 KiB
ArmAsm
67 lines
1.4 KiB
ArmAsm
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/* SPDX-License-Identifier: GPL-2.0-only */
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.align 32
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.globl __flushw_user
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.type __flushw_user,#function
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__flushw_user:
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rdpr %otherwin, %g1
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brz,pn %g1, 2f
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clr %g2
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1: save %sp, -128, %sp
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rdpr %otherwin, %g1
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brnz,pt %g1, 1b
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add %g2, 1, %g2
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1: sub %g2, 1, %g2
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brnz,pt %g2, 1b
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restore %g0, %g0, %g0
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2: retl
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nop
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.size __flushw_user,.-__flushw_user
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EXPORT_SYMBOL(__flushw_user)
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/* Flush %fp and %i7 to the stack for all register
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* windows active inside of the cpu. This allows
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* show_stack_trace() to avoid using an expensive
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* 'flushw'.
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*/
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.globl stack_trace_flush
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.type stack_trace_flush,#function
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stack_trace_flush:
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rdpr %pstate, %o0
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wrpr %o0, PSTATE_IE, %pstate
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rdpr %cwp, %g1
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rdpr %canrestore, %g2
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sub %g1, 1, %g3
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1: brz,pn %g2, 2f
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sub %g2, 1, %g2
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wrpr %g3, %cwp
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stx %fp, [%sp + STACK_BIAS + RW_V9_I6]
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stx %i7, [%sp + STACK_BIAS + RW_V9_I7]
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ba,pt %xcc, 1b
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sub %g3, 1, %g3
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2: wrpr %g1, %cwp
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wrpr %o0, %pstate
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retl
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nop
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.size stack_trace_flush,.-stack_trace_flush
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#ifdef CONFIG_SMP
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.globl hard_smp_processor_id
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.type hard_smp_processor_id,#function
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hard_smp_processor_id:
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#endif
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.globl real_hard_smp_processor_id
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.type real_hard_smp_processor_id,#function
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real_hard_smp_processor_id:
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__GET_CPUID(%o0)
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retl
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nop
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#ifdef CONFIG_SMP
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.size hard_smp_processor_id,.-hard_smp_processor_id
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#endif
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.size real_hard_smp_processor_id,.-real_hard_smp_processor_id
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EXPORT_SYMBOL_GPL(real_hard_smp_processor_id)
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