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