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target-s390: Implement COMPARE AND TRAP

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Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Richard Henderson 2012-09-05 17:32:54 -07:00
parent 403e217f40
commit 1c26875182
2 changed files with 40 additions and 0 deletions
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11
target-s390x/insn-data.def
View File

@ -198,6 +198,17 @@
C(0xeb31, CDSY, RSY_a, LD, r1_D32, a2, new, r1_D32, cds, 0)
C(0xeb3e, CDSG, RSY_a, Z, 0, a2, 0, 0, cdsg, 0)
/* COMPARE AND TRAP */
D(0xb972, CRT, RRF_c, GIE, r1_32s, r2_32s, 0, 0, ct, 0, 0)
D(0xb960, CGRT, RRF_c, GIE, r1_o, r2_o, 0, 0, ct, 0, 0)
D(0xec72, CIT, RIE_a, GIE, r1_32s, i2, 0, 0, ct, 0, 0)
D(0xec70, CGIT, RIE_a, GIE, r1_o, i2, 0, 0, ct, 0, 0)
/* COMPARE LOGICAL AND TRAP */
D(0xb973, CLRT, RRF_c, GIE, r1_32u, r2_32u, 0, 0, ct, 0, 1)
D(0xb961, CLGRT, RRF_c, GIE, r1_o, r2_o, 0, 0, ct, 0, 1)
D(0xec73, CLFIT, RIE_a, GIE, r1_32u, i2_32u, 0, 0, ct, 0, 1)
D(0xec71, CLGIT, RIE_a, GIE, r1_o, i2_32u, 0, 0, ct, 0, 0)
/* CONVERT TO DECIMAL */
C(0x4e00, CVD, RX_a, Z, r1_o, a2, 0, 0, cvd, 0)
C(0xe326, CVDY, RXY_a, LD, r1_o, a2, 0, 0, cvd, 0)

29
target-s390x/translate.c
View File

@ -1705,6 +1705,35 @@ static ExitStatus op_cvd(DisasContext *s, DisasOps *o)
return NO_EXIT;
}
static ExitStatus op_ct(DisasContext *s, DisasOps *o)
{
int m3 = get_field(s->fields, m3);
int lab = gen_new_label();
TCGv_i32 t;
TCGCond c;
/* Bit 3 of the m3 field is reserved and should be zero.
Choose to ignore it wrt the ltgt_cond table above. */
c = tcg_invert_cond(ltgt_cond[m3 & 14]);
if (s->insn->data) {
c = tcg_unsigned_cond(c);
}
tcg_gen_brcond_i64(c, o->in1, o->in2, lab);
/* Set DXC to 0xff. */
t = tcg_temp_new_i32();
tcg_gen_ld_i32(t, cpu_env, offsetof(CPUS390XState, fpc));
tcg_gen_ori_i32(t, t, 0xff00);
tcg_gen_st_i32(t, cpu_env, offsetof(CPUS390XState, fpc));
tcg_temp_free_i32(t);
/* Trap. */
gen_program_exception(s, PGM_DATA);
gen_set_label(lab);
return NO_EXIT;
}
#ifndef CONFIG_USER_ONLY
static ExitStatus op_diag(DisasContext *s, DisasOps *o)
{