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target-s390: Implement EPSW

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Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Richard Henderson 2013-09-06 09:48:08 -07:00
parent 8612c93583
commit e30a9d3fea
2 changed files with 20 additions and 0 deletions
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2
target-s390x/insn-data.def
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@ -287,6 +287,8 @@
C(0xb24f, EAR, RRE, Z, 0, 0, new, r1_32, ear, 0)
/* EXTRACT FPC */
C(0xb38c, EFPC, RRE, Z, 0, 0, new, r1_32, efpc, 0)
/* EXTRACT PSW */
C(0xb98d, EPSW, RRE, Z, 0, 0, 0, 0, epsw, 0)
/* FIND LEFTMOST ONE */
C(0xb983, FLOGR, RRE, EI, 0, r2_o, r1_P, 0, flogr, 0)

18
target-s390x/translate.c
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@ -2051,6 +2051,24 @@ static ExitStatus op_efpc(DisasContext *s, DisasOps *o)
return NO_EXIT;
}
static ExitStatus op_epsw(DisasContext *s, DisasOps *o)
{
int r1 = get_field(s->fields, r1);
int r2 = get_field(s->fields, r2);
TCGv_i64 t = tcg_temp_new_i64();
/* Note the "subsequently" in the PoO, which implies a defined result
if r1 == r2. Thus we cannot defer these writes to an output hook. */
tcg_gen_shri_i64(t, psw_mask, 32);
store_reg32_i64(r1, t);
if (r2 != 0) {
store_reg32_i64(r2, psw_mask);
}
tcg_temp_free_i64(t);
return NO_EXIT;
}
static ExitStatus op_ex(DisasContext *s, DisasOps *o)
{
/* ??? Perhaps a better way to implement EXECUTE is to set a bit in