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