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target-s390: Convert STNSM, STOSM 

Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Richard Henderson 2012-08-22 11:08:40 -07:00
parent a05d2b6b83
commit 145cdb4019
2 changed files with 29 additions and 18 deletions
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4
target-s390x/insn-data.def
View File

@ -444,4 +444,8 @@
C(0x010e, SAM64, E, Z, 0, 0, 0, 0, 0, 0)
/* SET SYSTEM MASK */
C(0x8000, SSM, S, Z, 0, m2_8u, 0, 0, ssm, 0)
/* STORE THEN AND SYSTEM MASK */
C(0xac00, STNSM, SI, Z, la1, 0, 0, 0, stnosm, 0)
/* STORE THEN OR SYSTEM MASK */
C(0xad00, STOSM, SI, Z, la1, 0, 0, 0, stnosm, 0)
#endif /* CONFIG_USER_ONLY */

43
target-s390x/translate.c
View File

@ -2226,7 +2226,7 @@ static void disas_s390_insn(CPUS390XState *env, DisasContext *s)
TCGv_i32 tmp32_1, tmp32_2;
unsigned char opc;
uint64_t insn;
int op, r1, r2, r3, d1, d2, x2, b1, b2, i2, r1b;
int op, r1, r2, r3, d1, d2, x2, b1, b2, r1b;
TCGv_i32 vl;
opc = cpu_ldub_code(env, s->pc);
@ -2284,23 +2284,6 @@ static void disas_s390_insn(CPUS390XState *env, DisasContext *s)
tcg_temp_free_i32(tmp32_2);
break;
#ifndef CONFIG_USER_ONLY
case 0xac: /* STNSM D1(B1),I2 [SI] */
case 0xad: /* STOSM D1(B1),I2 [SI] */
check_privileged(s);
insn = ld_code4(env, s->pc);
tmp = decode_si(s, insn, &i2, &b1, &d1);
tmp2 = tcg_temp_new_i64();
tcg_gen_shri_i64(tmp2, psw_mask, 56);
tcg_gen_qemu_st8(tmp2, tmp, get_mem_index(s));
if (opc == 0xac) {
tcg_gen_andi_i64(psw_mask, psw_mask,
((uint64_t)i2 << 56) | 0x00ffffffffffffffULL);
} else {
tcg_gen_ori_i64(psw_mask, psw_mask, (uint64_t)i2 << 56);
}
tcg_temp_free_i64(tmp);
tcg_temp_free_i64(tmp2);
break;
case 0xae: /* SIGP R1,R3,D2(B2) [RS] */
check_privileged(s);
insn = ld_code4(env, s->pc);
@ -3485,6 +3468,30 @@ static ExitStatus op_ssm(DisasContext *s, DisasOps *o)
tcg_gen_deposit_i64(psw_mask, psw_mask, o->in2, 56, 8);
return NO_EXIT;
}
static ExitStatus op_stnosm(DisasContext *s, DisasOps *o)
{
uint64_t i2 = get_field(s->fields, i2);
TCGv_i64 t;
check_privileged(s);
/* It is important to do what the instruction name says: STORE THEN.
If we let the output hook perform the store then if we fault and
restart, we'll have the wrong SYSTEM MASK in place. */
t = tcg_temp_new_i64();
tcg_gen_shri_i64(t, psw_mask, 56);
tcg_gen_qemu_st8(t, o->addr1, get_mem_index(s));
tcg_temp_free_i64(t);
if (s->fields->op == 0xac) {
tcg_gen_andi_i64(psw_mask, psw_mask,
(i2 << 56) | 0x00ffffffffffffffull);
} else {
tcg_gen_ori_i64(psw_mask, psw_mask, i2 << 56);
}
return NO_EXIT;
}
#endif
static ExitStatus op_st8(DisasContext *s, DisasOps *o)