s390/kernel/earlypgm.S

0001 /* SPDX-License-Identifier: GPL-2.0 */
0002 /*
0003  *    Copyright IBM Corp. 2006, 2007
0004  *    Author(s): Michael Holzheu <holzheu@de.ibm.com>
0005  */
0006
0007 #include <linux/linkage.h>
0008 #include <asm/asm-offsets.h>
0009
0010 ENTRY(early_pgm_check_handler)
0011     stmg    %r8,%r15,__LC_SAVE_AREA_SYNC
0012     aghi    %r15,-(STACK_FRAME_OVERHEAD+__PT_SIZE)
0013     la  %r11,STACK_FRAME_OVERHEAD(%r15)
0014     xc  __SF_BACKCHAIN(8,%r15),__SF_BACKCHAIN(%r15)
0015     stmg    %r0,%r7,__PT_R0(%r11)
0016     mvc __PT_PSW(16,%r11),__LC_PGM_OLD_PSW
0017     mvc __PT_R8(64,%r11),__LC_SAVE_AREA_SYNC
0018     lgr %r2,%r11
0019     brasl   %r14,__do_early_pgm_check
0020     mvc __LC_RETURN_PSW(16),STACK_FRAME_OVERHEAD+__PT_PSW(%r15)
0021     lmg %r0,%r15,STACK_FRAME_OVERHEAD+__PT_R0(%r15)
0022     lpswe   __LC_RETURN_PSW
0023 ENDPROC(early_pgm_check_handler)