1/* SPDX-License-Identifier: GPL-2.0 */ 2#include "common.h" 3 4 .data 5 .balign 8 6message: 7 .ascii "success: switch_endian_test\n\0" 8 9 .section ".toc" 10 .balign 8 11pattern: 12 .8byte 0x5555AAAA5555AAAA 13 14 .text 15FUNC_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 . 83