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target-s390: Convert SHIFT DOUBLE

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Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Richard Henderson 2012-08-22 09:22:23 -07:00
parent cbe24bfa91
commit a79ba3398a
2 changed files with 8 additions and 30 deletions
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8
target-s390x/insn-data.def
View File

@ -335,6 +335,14 @@
C(0x8800, SRL, RS_a, Z, r1_32u, sh32, new, r1_32, srl, 0)
C(0xebde, SRLK, RSY_a, DO, r3_32u, sh32, new, r1_32, srl, 0)
C(0xeb0c, SRLG, RSY_a, Z, r3_o, sh64, r1, 0, srl, 0)
/* SHIFT LEFT DOUBLE */
D(0x8f00, SLDA, RS_a, Z, r1_D32, sh64, new, r1_D32, sla, 0, 31)
/* SHIFT LEFT DOUBLE LOGICAL */
C(0x8d00, SLDL, RS_a, Z, r1_D32, sh64, new, r1_D32, sll, 0)
/* SHIFT RIGHT DOUBLE */
C(0x8e00, SRDA, RS_a, Z, r1_D32, sh64, new, r1_D32, sra, s64)
/* SHIFT RIGHT DOUBLE LOGICAL */
C(0x8c00, SRDL, RS_a, Z, r1_D32, sh64, new, r1_D32, srl, 0)
/* STORE */
C(0x5000, ST, RX_a, Z, r1_o, a2, 0, 0, st32, 0)

30
target-s390x/translate.c
View File

@ -2288,36 +2288,6 @@ static void disas_s390_insn(CPUS390XState *env, DisasContext *s)
LOG_DISAS("opc 0x%x\n", opc);
switch (opc) {
case 0x8c: /* SRDL R1,D2(B2) [RS] */
case 0x8d: /* SLDL R1,D2(B2) [RS] */
case 0x8e: /* SRDA R1,D2(B2) [RS] */
insn = ld_code4(env, s->pc);
decode_rs(s, insn, &r1, &r3, &b2, &d2);
tmp = get_address(s, 0, b2, d2); /* shift */
tmp2 = tcg_temp_new_i64();
tmp32_1 = load_reg32(r1);
tmp32_2 = load_reg32(r1 + 1);
tcg_gen_concat_i32_i64(tmp2, tmp32_2, tmp32_1); /* operand */
switch (opc) {
case 0x8c:
tcg_gen_shr_i64(tmp2, tmp2, tmp);
break;
case 0x8d:
tcg_gen_shl_i64(tmp2, tmp2, tmp);
break;
case 0x8e:
tcg_gen_sar_i64(tmp2, tmp2, tmp);
set_cc_s64(s, tmp2);
break;
}
tcg_gen_shri_i64(tmp, tmp2, 32);
tcg_gen_trunc_i64_i32(tmp32_1, tmp);
store_reg32(r1, tmp32_1);
tcg_gen_trunc_i64_i32(tmp32_2, tmp2);
store_reg32(r1 + 1, tmp32_2);
tcg_temp_free_i64(tmp);
tcg_temp_free_i64(tmp2);
break;
case 0x98: /* LM R1,R3,D2(B2) [RS] */
case 0x90: /* STM R1,R3,D2(B2) [RS] */
insn = ld_code4(env, s->pc);