1 /* SPDX-License-Identifier: GPL-2.0 */ 1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifdef CONFIG_KGDB 2 #ifdef CONFIG_KGDB
3 .globl arch_kgdb_breakpoint 3 .globl arch_kgdb_breakpoint
4 .type arch_kgdb_breakpoint,# 4 .type arch_kgdb_breakpoint,#function
5 arch_kgdb_breakpoint: 5 arch_kgdb_breakpoint:
6 ta 0x72 6 ta 0x72
7 retl 7 retl
8 nop 8 nop
9 .size arch_kgdb_breakpoint,. 9 .size arch_kgdb_breakpoint,.-arch_kgdb_breakpoint
10 #endif 10 #endif
11 11
12 .type __do_privact,#function 12 .type __do_privact,#function
13 __do_privact: 13 __do_privact:
14 mov TLB_SFSR, %g3 14 mov TLB_SFSR, %g3
15 stxa %g0, [%g3] ASI_DMMU 15 stxa %g0, [%g3] ASI_DMMU ! Clear FaultValid bit
16 membar #Sync 16 membar #Sync
17 sethi %hi(109f), %g7 17 sethi %hi(109f), %g7
18 ba,pt %xcc, etrap 18 ba,pt %xcc, etrap
19 109: or %g7, %lo(109b), %g7 19 109: or %g7, %lo(109b), %g7
20 call do_privact 20 call do_privact
21 add %sp, PTREGS_OFF, %o0 21 add %sp, PTREGS_OFF, %o0
22 ba,a,pt %xcc, rtrap 22 ba,a,pt %xcc, rtrap
23 .size __do_privact,.-__do_pr 23 .size __do_privact,.-__do_privact
24 24
25 .type do_mna,#function 25 .type do_mna,#function
26 do_mna: 26 do_mna:
27 rdpr %tl, %g3 27 rdpr %tl, %g3
28 cmp %g3, 1 28 cmp %g3, 1
29 29
30 /* Setup %g4/%g5 now as they are used 30 /* Setup %g4/%g5 now as they are used in the
31 * winfixup code. 31 * winfixup code.
32 */ 32 */
33 mov TLB_SFSR, %g3 33 mov TLB_SFSR, %g3
34 mov DMMU_SFAR, %g4 34 mov DMMU_SFAR, %g4
35 ldxa [%g4] ASI_DMMU, %g4 35 ldxa [%g4] ASI_DMMU, %g4
36 ldxa [%g3] ASI_DMMU, %g5 36 ldxa [%g3] ASI_DMMU, %g5
37 stxa %g0, [%g3] ASI_DMMU 37 stxa %g0, [%g3] ASI_DMMU ! Clear FaultValid bit
38 membar #Sync 38 membar #Sync
39 bgu,pn %icc, winfix_mna 39 bgu,pn %icc, winfix_mna
40 rdpr %tpc, %g3 40 rdpr %tpc, %g3
41 41
42 1: sethi %hi(109f), %g7 42 1: sethi %hi(109f), %g7
43 ba,pt %xcc, etrap 43 ba,pt %xcc, etrap
44 109: or %g7, %lo(109b), %g7 44 109: or %g7, %lo(109b), %g7
45 mov %l4, %o1 45 mov %l4, %o1
46 mov %l5, %o2 46 mov %l5, %o2
47 call mem_address_unaligned 47 call mem_address_unaligned
48 add %sp, PTREGS_OFF, %o0 48 add %sp, PTREGS_OFF, %o0
49 ba,a,pt %xcc, rtrap 49 ba,a,pt %xcc, rtrap
50 .size do_mna,.-do_mna 50 .size do_mna,.-do_mna
51 51
52 .type do_lddfmna,#function 52 .type do_lddfmna,#function
53 do_lddfmna: 53 do_lddfmna:
54 sethi %hi(109f), %g7 54 sethi %hi(109f), %g7
55 mov TLB_SFSR, %g4 55 mov TLB_SFSR, %g4
56 ldxa [%g4] ASI_DMMU, %g5 56 ldxa [%g4] ASI_DMMU, %g5
57 stxa %g0, [%g4] ASI_DMMU 57 stxa %g0, [%g4] ASI_DMMU ! Clear FaultValid bit
58 membar #Sync 58 membar #Sync
59 mov DMMU_SFAR, %g4 59 mov DMMU_SFAR, %g4
60 ldxa [%g4] ASI_DMMU, %g4 60 ldxa [%g4] ASI_DMMU, %g4
61 ba,pt %xcc, etrap 61 ba,pt %xcc, etrap
62 109: or %g7, %lo(109b), %g7 62 109: or %g7, %lo(109b), %g7
63 mov %l4, %o1 63 mov %l4, %o1
64 mov %l5, %o2 64 mov %l5, %o2
65 call handle_lddfmna 65 call handle_lddfmna
66 add %sp, PTREGS_OFF, %o0 66 add %sp, PTREGS_OFF, %o0
67 ba,a,pt %xcc, rtrap 67 ba,a,pt %xcc, rtrap
68 .size do_lddfmna,.-do_lddfmn 68 .size do_lddfmna,.-do_lddfmna
69 69
70 .type do_stdfmna,#function 70 .type do_stdfmna,#function
71 do_stdfmna: 71 do_stdfmna:
72 sethi %hi(109f), %g7 72 sethi %hi(109f), %g7
73 mov TLB_SFSR, %g4 73 mov TLB_SFSR, %g4
74 ldxa [%g4] ASI_DMMU, %g5 74 ldxa [%g4] ASI_DMMU, %g5
75 stxa %g0, [%g4] ASI_DMMU 75 stxa %g0, [%g4] ASI_DMMU ! Clear FaultValid bit
76 membar #Sync 76 membar #Sync
77 mov DMMU_SFAR, %g4 77 mov DMMU_SFAR, %g4
78 ldxa [%g4] ASI_DMMU, %g4 78 ldxa [%g4] ASI_DMMU, %g4
79 ba,pt %xcc, etrap 79 ba,pt %xcc, etrap
80 109: or %g7, %lo(109b), %g7 80 109: or %g7, %lo(109b), %g7
81 mov %l4, %o1 81 mov %l4, %o1
82 mov %l5, %o2 82 mov %l5, %o2
83 call handle_stdfmna 83 call handle_stdfmna
84 add %sp, PTREGS_OFF, %o0 84 add %sp, PTREGS_OFF, %o0
85 ba,a,pt %xcc, rtrap 85 ba,a,pt %xcc, rtrap
86 nop 86 nop
87 .size do_stdfmna,.-do_stdfmn 87 .size do_stdfmna,.-do_stdfmna
88 88
89 .type breakpoint_trap,#funct 89 .type breakpoint_trap,#function
90 breakpoint_trap: 90 breakpoint_trap:
91 call sparc_breakpoint 91 call sparc_breakpoint
92 add %sp, PTREGS_OFF, %o0 92 add %sp, PTREGS_OFF, %o0
93 ba,pt %xcc, rtrap 93 ba,pt %xcc, rtrap
94 nop 94 nop
95 .size breakpoint_trap,.-brea 95 .size breakpoint_trap,.-breakpoint_trap
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