/*
* sie64a.S - low level sie call
*
* Copyright IBM Corp. 2008
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License (version 2 only)
* as published by the Free Software Foundation.
*
* Author(s): Heiko Carstens <heiko.carstens@de.ibm.com>
*/
#include <linux/errno.h>
#include <asm/asm-offsets.h>
SP_R5 = 5 * 8 # offset into stackframe
SP_R6 = 6 * 8
/*
* sie64a calling convention:
* %r2 pointer to sie control block
* %r3 guest register save area
*/
.globl sie64a
sie64a:
lgr %r5,%r3
stmg %r5,%r14,SP_R5(%r15) # save register on entry
lgr %r14,%r2 # pointer to sie control block
lmg %r0,%r13,0(%r3) # load guest gprs 0-13
sie_inst:
sie 0(%r14)
lg %r14,SP_R5(%r15)
stmg %r0,%r13,0(%r14) # save guest gprs 0-13
lghi %r2,0
lmg %r6,%r14,SP_R6(%r15)
br %r14
sie_err:
lg %r14,SP_R5(%r15)
stmg %r0,%r13,0(%r14) # save guest gprs 0-13
lghi %r2,-EFAULT
lmg %r6,%r14,SP_R6(%r15)
br %r14
.section __ex_table,"a"
.quad sie_inst,sie_err
.previous
