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Commit | Line | Data |
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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
4cd968ef ME |
2 | #include "common.h" |
3 | ||
4 | .data | |
5 | .balign 8 | |
6 | message: | |
7 | .ascii "success: switch_endian_test\n\0" | |
8 | ||
9 | .section ".toc" | |
10 | .balign 8 | |
11 | pattern: | |
eb039161 | 12 | .8byte 0x5555AAAA5555AAAA |
4cd968ef ME |
13 | |
14 | .text | |
15 | FUNC_START(_start) | |
16 | /* Load the pattern */ | |
17 | ld r15, pattern@TOC(%r2) | |
18 | ||
19 | /* Setup CR, only CR2-CR4 are maintained */ | |
20 | lis r3, 0x00FF | |
21 | ori r3, r3, 0xF000 | |
22 | mtcr r3 | |
23 | ||
24 | /* Load the pattern slightly modified into the registers */ | |
25 | mr r3, r15 | |
26 | addi r4, r15, 4 | |
27 | ||
28 | addi r5, r15, 32 | |
29 | mtlr r5 | |
30 | ||
31 | addi r5, r15, 5 | |
32 | addi r6, r15, 6 | |
33 | addi r7, r15, 7 | |
34 | addi r8, r15, 8 | |
35 | ||
36 | /* r9 - r12 are clobbered */ | |
37 | ||
38 | addi r13, r15, 13 | |
39 | addi r14, r15, 14 | |
40 | ||
41 | /* Skip r15 we're using it */ | |
42 | ||
43 | addi r16, r15, 16 | |
44 | addi r17, r15, 17 | |
45 | addi r18, r15, 18 | |
46 | addi r19, r15, 19 | |
47 | addi r20, r15, 20 | |
48 | addi r21, r15, 21 | |
49 | addi r22, r15, 22 | |
50 | addi r23, r15, 23 | |
51 | addi r24, r15, 24 | |
52 | addi r25, r15, 25 | |
53 | addi r26, r15, 26 | |
54 | addi r27, r15, 27 | |
55 | addi r28, r15, 28 | |
56 | addi r29, r15, 29 | |
57 | addi r30, r15, 30 | |
58 | addi r31, r15, 31 | |
59 | ||
60 | /* | |
61 | * Call the syscall to switch endian. | |
62 | * It clobbers r9-r12, XER, CTR and CR0-1,5-7. | |
63 | */ | |
64 | li r0, __NR_switch_endian | |
65 | sc | |
66 | ||
67 | #include "check-reversed.S" | |
68 | ||
69 | /* Flip back, r0 already has the switch syscall number */ | |
70 | .long 0x02000044 /* sc */ | |
71 | ||
72 | #include "check.S" | |
73 | ||
74 | li r0, __NR_write | |
75 | li r3, 1 /* stdout */ | |
76 | ld r4, message@got(%r2) | |
77 | li r5, 28 /* strlen(message3) */ | |
78 | sc | |
79 | li r0, __NR_exit | |
80 | li r3, 0 | |
81 | sc | |
82 | b . |