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