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| author | Miroslav Benes <mbenes@suse.cz> | 2017-02-27 09:53:53 +0100 |
|---|---|---|
| committer | Richard Henderson <rth@twiddle.net> | 2017-05-12 15:40:29 -0700 |
| commit | 190b2422e65fb8bb559f4337dfe461a50d0b7ec1 (patch) | |
| tree | 42afbb698a718cce434df05b25f499e13a4e13b1 | |
| parent | 5bf83628dc61b821c3834730836f1d7c2f5ff1be (diff) | |
| download | qemu-190b2422e65fb8bb559f4337dfe461a50d0b7ec1.zip qemu-190b2422e65fb8bb559f4337dfe461a50d0b7ec1.tar.gz qemu-190b2422e65fb8bb559f4337dfe461a50d0b7ec1.tar.bz2 | |
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: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Miroslav Benes <mbenes@suse.cz>
Message-Id: <20170227085353.20787-1-mbenes@suse.cz>
Signed-off-by: Richard Henderson <rth@twiddle.net>
| -rw-r--r-- | target/s390x/insn-data.def | 2 | ||||
| -rw-r--r-- | target/s390x/translate.c | 9 |
2 files changed, 11 insertions, 0 deletions
diff --git a/target/s390x/insn-data.def b/target/s390x/insn-data.def index b6702da..43c5707 100644 --- a/target/s390x/insn-data.def +++ b/target/s390x/insn-data.def @@ -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 */ diff --git a/target/s390x/translate.c b/target/s390x/translate.c index 69940e3..2b66a4e 100644 --- a/target/s390x/translate.c +++ b/target/s390x/translate.c @@ -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; |