1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | /* |
3 | * Copyright IBM Corp 2000, 2011 |
4 | * Author(s): Holger Smolinski <Holger.Smolinski@de.ibm.com>, |
5 | * Denis Joseph Barrow, |
6 | */ |
7 | |
8 | #include <linux/linkage.h> |
9 | #include <asm/asm-offsets.h> |
10 | #include <asm/nospec-insn.h> |
11 | #include <asm/sigp.h> |
12 | |
13 | GEN_BR_THUNK %r9 |
14 | |
15 | # |
16 | # Issue "store status" for the current CPU to its prefix page |
17 | # and call passed function afterwards |
18 | # |
19 | # r2 = Function to be called after store status |
20 | # r3 = Parameter for function |
21 | # |
22 | SYM_CODE_START(store_status) |
23 | /* Save register one and load save area base */ |
24 | stg %r1,__LC_SAVE_AREA_RESTART |
25 | /* General purpose registers */ |
26 | lghi %r1,__LC_GPREGS_SAVE_AREA |
27 | stmg %r0,%r15,0(%r1) |
28 | mvc 8(8,%r1),__LC_SAVE_AREA_RESTART |
29 | /* Control registers */ |
30 | lghi %r1,__LC_CREGS_SAVE_AREA |
31 | stctg %c0,%c15,0(%r1) |
32 | /* Access registers */ |
33 | lghi %r1,__LC_AREGS_SAVE_AREA |
34 | stam %a0,%a15,0(%r1) |
35 | /* Floating point registers */ |
36 | lghi %r1,__LC_FPREGS_SAVE_AREA |
37 | std %f0, 0x00(%r1) |
38 | std %f1, 0x08(%r1) |
39 | std %f2, 0x10(%r1) |
40 | std %f3, 0x18(%r1) |
41 | std %f4, 0x20(%r1) |
42 | std %f5, 0x28(%r1) |
43 | std %f6, 0x30(%r1) |
44 | std %f7, 0x38(%r1) |
45 | std %f8, 0x40(%r1) |
46 | std %f9, 0x48(%r1) |
47 | std %f10,0x50(%r1) |
48 | std %f11,0x58(%r1) |
49 | std %f12,0x60(%r1) |
50 | std %f13,0x68(%r1) |
51 | std %f14,0x70(%r1) |
52 | std %f15,0x78(%r1) |
53 | /* Floating point control register */ |
54 | lghi %r1,__LC_FP_CREG_SAVE_AREA |
55 | stfpc 0(%r1) |
56 | /* CPU timer */ |
57 | lghi %r1,__LC_CPU_TIMER_SAVE_AREA |
58 | stpt 0(%r1) |
59 | /* Store prefix register */ |
60 | lghi %r1,__LC_PREFIX_SAVE_AREA |
61 | stpx 0(%r1) |
62 | /* Clock comparator - seven bytes */ |
63 | lghi %r1,__LC_CLOCK_COMP_SAVE_AREA |
64 | larl %r4,clkcmp |
65 | stckc 0(%r4) |
66 | mvc 1(7,%r1),1(%r4) |
67 | /* Program status word */ |
68 | lghi %r1,__LC_PSW_SAVE_AREA |
69 | epsw %r4,%r5 |
70 | st %r4,0(%r1) |
71 | st %r5,4(%r1) |
72 | stg %r2,8(%r1) |
73 | lgr %r9,%r2 |
74 | lgr %r2,%r3 |
75 | BR_EX %r9 |
76 | SYM_CODE_END(store_status) |
77 | |
78 | .section .bss |
79 | .balign 8 |
80 | SYM_DATA_LOCAL(clkcmp, .quad 0x0000000000000000) |
81 | .previous |
82 | |