51 lines
1.2 KiB
ArmAsm
51 lines
1.2 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* arch/s390/kernel/base.S
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*
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* Copyright IBM Corp. 2006, 2007
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* Author(s): Michael Holzheu <holzheu@de.ibm.com>
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*/
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#include <linux/linkage.h>
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#include <asm/asm-offsets.h>
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#include <asm/nospec-insn.h>
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#include <asm/ptrace.h>
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GEN_BR_THUNK %r9
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GEN_BR_THUNK %r14
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__PT_R0 = __PT_GPRS
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__PT_R8 = __PT_GPRS + 64
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ENTRY(s390_base_pgm_handler)
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stmg %r8,%r15,__LC_SAVE_AREA_SYNC
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aghi %r15,-(STACK_FRAME_OVERHEAD+__PT_SIZE)
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la %r11,STACK_FRAME_OVERHEAD(%r15)
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xc __SF_BACKCHAIN(8,%r15),__SF_BACKCHAIN(%r15)
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stmg %r0,%r7,__PT_R0(%r11)
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mvc __PT_PSW(16,%r11),__LC_PGM_OLD_PSW
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mvc __PT_R8(64,%r11),__LC_SAVE_AREA_SYNC
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lgr %r2,%r11
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larl %r1,s390_base_pgm_handler_fn
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lg %r9,0(%r1)
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ltgr %r9,%r9
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jz 1f
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BASR_EX %r14,%r9
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mvc __LC_RETURN_PSW(16),STACK_FRAME_OVERHEAD+__PT_PSW(%r15)
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lmg %r0,%r15,STACK_FRAME_OVERHEAD+__PT_R0(%r15)
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lpswe __LC_RETURN_PSW
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1: larl %r13,disabled_wait_psw
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lpswe 0(%r13)
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ENDPROC(s390_base_pgm_handler)
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.align 8
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disabled_wait_psw:
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.quad 0x0002000180000000,0x0000000000000000 + s390_base_pgm_handler
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.section .bss
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.align 8
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.globl s390_base_pgm_handler_fn
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s390_base_pgm_handler_fn:
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.quad 0
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.previous
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