a1465c8b5b
Add several small tests that check the PSW modification instructions: * lpsw.S checks whether LPSW works correctly in the "happy" case. * lpswe-early.S checks whether early exceptions are recognized and whether the correct ILC and old PSW are stored when they happen. * ssm-early.S, stosm-early.S and exrl-ssm-early.S check the special handling of SSM and STOSM with respect to early exceptions. Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Message-Id: <20230315020408.384766-4-iii@linux.ibm.com> Signed-off-by: Thomas Huth <thuth@redhat.com>
42 lines
1.0 KiB
ArmAsm
42 lines
1.0 KiB
ArmAsm
/*
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* Test early exception recognition using SSM.
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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.org 0x8d
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ilc:
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.org 0x8e
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program_interruption_code:
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.org 0x150
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program_old_psw:
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.org 0x1D0 /* program new PSW */
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.quad 0,pgm
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.org 0x200 /* lowcore padding */
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.globl _start
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_start:
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ssm ssm_op
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expected_pswa:
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j failure
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pgm:
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chhsi program_interruption_code,0x6 /* specification exception? */
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jne failure
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cli ilc,4 /* ilc for SSM? */
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jne failure
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clc program_old_psw(16),expected_old_psw /* correct old PSW? */
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jne failure
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lpswe success_psw
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failure:
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lpswe failure_psw
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ssm_op:
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.byte 0x20 /* bit 2 set */
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.align 8
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expected_old_psw:
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.quad 0x2000000180000000,expected_pswa /* bit 2 set */
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success_psw:
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.quad 0x2000000000000,0xfff /* see is_special_wait_psw() */
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failure_psw:
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.quad 0x2000000000000,0 /* disabled wait */
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