Commit 190b2422 authored by Miroslav Benes's avatar Miroslav Benes Committed by Richard Henderson
Browse files

target/s390x: Implement LOAD PROGRAM PARAMETER 

Linux arch/s390/kernel/head(64).S uses LPP instruction if it is
available in facilities list provided by stfl/stfle instruction.
This is the case of newer z/System generations and their qemu
definition.

The description of LPP is at
http://www-01.ibm.com/support/docview.wss?uid=isg26fcd1cc32246f4c8852574ce0044734a



Reviewed-by: default avatarAurelien Jarno <aurelien@aurel32.net>
Signed-off-by: default avatarMiroslav Benes <mbenes@suse.cz>
Message-Id: <20170227085353.20787-1-mbenes@suse.cz>
Signed-off-by: default avatarRichard Henderson <rth@twiddle.net>
parent 5bf83628

target/s390x/insn-data.def

+2 −0
Original line number Diff line number Diff line
@@ -845,6 +845,8 @@ 
/* LOAD CONTROL */

    C(0xb700, LCTL,    RS_a,  Z,   0, a2, 0, 0, lctl, 0)

    C(0xeb2f, LCTLG,   RSY_a, Z,   0, a2, 0, 0, lctlg, 0)

/* LOAD PROGRAM PARAMETER */

    C(0xb280, LPP,     S,   LPP,   0, m2_64, 0, 0, lpp, 0)

/* LOAD PSW */

    C(0x8200, LPSW,    S,     Z,   0, a2, 0, 0, lpsw, 0)

/* LOAD PSW EXTENDED */

target/s390x/translate.c

+9 −0
Original line number Diff line number Diff line
@@ -1194,6 +1194,7 @@ typedef enum DisasFacility { 
    FAC_SCF,                /* store clock fast */

    FAC_SFLE,               /* store facility list extended */

    FAC_ILA,                /* interlocked access facility 1 */

    FAC_LPP,                /* load-program-parameter */

} DisasFacility;



struct DisasInsn {
@@ -2567,6 +2568,14 @@ static ExitStatus op_lra(DisasContext *s, DisasOps *o) 
    return NO_EXIT;

}



static ExitStatus op_lpp(DisasContext *s, DisasOps *o)

{

    check_privileged(s);



    tcg_gen_st_i64(o->in2, cpu_env, offsetof(CPUS390XState, pp));

    return NO_EXIT;

}



static ExitStatus op_lpsw(DisasContext *s, DisasOps *o)

{

    TCGv_i64 t1, t2;