102 lines
1.9 KiB
ArmAsm
102 lines
1.9 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0 */
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#include "common.h"
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/*
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* Checks that registers contain what we expect, ie. they were not clobbered by
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* the syscall.
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*
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* r15: pattern to check registers against.
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*
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* At the end r3 == 0 if everything's OK.
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*/
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nop # guaranteed to be illegal in reverse-endian
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mr r9,r15
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cmpd r9,r3 # check r3
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bne 1f
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addi r9,r15,4 # check r4
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cmpd r9,r4
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bne 1f
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lis r9,0x00FF # check CR
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ori r9,r9,0xF000
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mfcr r10
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and r10,r10,r9
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cmpw r9,r10
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addi r9,r15,34
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bne 1f
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addi r9,r15,32 # check LR
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mflr r10
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cmpd r9,r10
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bne 1f
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addi r9,r15,5 # check r5
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cmpd r9,r5
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bne 1f
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addi r9,r15,6 # check r6
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cmpd r9,r6
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bne 1f
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addi r9,r15,7 # check r7
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cmpd r9,r7
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bne 1f
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addi r9,r15,8 # check r8
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cmpd r9,r8
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bne 1f
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addi r9,r15,13 # check r13
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cmpd r9,r13
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bne 1f
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addi r9,r15,14 # check r14
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cmpd r9,r14
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bne 1f
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addi r9,r15,16 # check r16
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cmpd r9,r16
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bne 1f
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addi r9,r15,17 # check r17
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cmpd r9,r17
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bne 1f
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addi r9,r15,18 # check r18
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cmpd r9,r18
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bne 1f
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addi r9,r15,19 # check r19
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cmpd r9,r19
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bne 1f
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addi r9,r15,20 # check r20
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cmpd r9,r20
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bne 1f
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addi r9,r15,21 # check r21
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cmpd r9,r21
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bne 1f
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addi r9,r15,22 # check r22
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cmpd r9,r22
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bne 1f
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addi r9,r15,23 # check r23
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cmpd r9,r23
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bne 1f
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addi r9,r15,24 # check r24
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cmpd r9,r24
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bne 1f
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addi r9,r15,25 # check r25
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cmpd r9,r25
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bne 1f
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addi r9,r15,26 # check r26
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cmpd r9,r26
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bne 1f
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addi r9,r15,27 # check r27
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cmpd r9,r27
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bne 1f
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addi r9,r15,28 # check r28
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cmpd r9,r28
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bne 1f
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addi r9,r15,29 # check r29
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cmpd r9,r29
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bne 1f
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addi r9,r15,30 # check r30
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cmpd r9,r30
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bne 1f
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addi r9,r15,31 # check r31
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cmpd r9,r31
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bne 1f
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b 2f
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1: mr r3, r9
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li r0, __NR_exit
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sc
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2: li r0, __NR_switch_endian
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nop
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