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target-s390: Convert SHIFT, ROTATE SINGLE 

Note that we were missing the 32-bit SLA.

Signed-off-by: Richard Henderson <rth@twiddle.net>
stable-1.4
Richard Henderson 2012-08-22 09:15:19 -07:00
parent 972e35b966
commit cbe24bfa91
4 changed files with 176 additions and 114 deletions
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56
target-s390x/cc_helper.c
View File

@ -345,34 +345,59 @@ static uint32_t cc_calc_icm(uint64_t mask, uint64_t val)
}
}
static uint32_t cc_calc_slag(uint64_t src, uint64_t shift)
static uint32_t cc_calc_sla_32(uint32_t src, int shift)
{
uint64_t mask = ((1ULL << shift) - 1ULL) << (64 - shift);
uint64_t match, r;
uint32_t mask = ((1U << shift) - 1U) << (32 - shift);
uint32_t sign = 1U << 31;
uint32_t match;
int32_t r;
/* check if the sign bit stays the same */
if (src & (1ULL << 63)) {
/* Check if the sign bit stays the same. */
if (src & sign) {
match = mask;
} else {
match = 0;
}
if ((src & mask) != match) {
/* overflow */
/* Overflow. */
return 3;
}
r = ((src << shift) & ((1ULL << 63) - 1)) | (src & (1ULL << 63));
if ((int64_t)r == 0) {
r = ((src << shift) & ~sign) | (src & sign);
if (r == 0) {
return 0;
} else if ((int64_t)r < 0) {
} else if (r < 0) {
return 1;
}
return 2;
}
static uint32_t cc_calc_sla_64(uint64_t src, int shift)
{
uint64_t mask = ((1ULL << shift) - 1ULL) << (64 - shift);
uint64_t sign = 1ULL << 63;
uint64_t match;
int64_t r;
/* Check if the sign bit stays the same. */
if (src & sign) {
match = mask;
} else {
match = 0;
}
if ((src & mask) != match) {
/* Overflow. */
return 3;
}
r = ((src << shift) & ~sign) | (src & sign);
if (r == 0) {
return 0;
} else if (r < 0) {
return 1;
}
return 2;
}
static uint32_t do_calc_cc(CPUS390XState *env, uint32_t cc_op,
uint64_t src, uint64_t dst, uint64_t vr)
@ -473,8 +498,11 @@ static uint32_t do_calc_cc(CPUS390XState *env, uint32_t cc_op,
case CC_OP_ICM:
r = cc_calc_icm(src, dst);
break;
case CC_OP_SLAG:
r = cc_calc_slag(src, dst);
case CC_OP_SLA_32:
r = cc_calc_sla_32(src, dst);
break;
case CC_OP_SLA_64:
r = cc_calc_sla_64(src, dst);
break;
case CC_OP_LTGT_F32:

6
target-s390x/cpu.h
View File

@ -478,7 +478,8 @@ enum cc_op {
CC_OP_NZ_F64, /* FP dst != 0 (64bit) */
CC_OP_ICM, /* insert characters under mask */
CC_OP_SLAG, /* Calculate shift left signed */
CC_OP_SLA_32, /* Calculate shift left signed (32bit) */
CC_OP_SLA_64, /* Calculate shift left signed (64bit) */
CC_OP_MAX
};
@ -521,7 +522,8 @@ static const char *cc_names[] = {
[CC_OP_NZ_F32] = "CC_OP_NZ_F32",
[CC_OP_NZ_F64] = "CC_OP_NZ_F64",
[CC_OP_ICM] = "CC_OP_ICM",
[CC_OP_SLAG] = "CC_OP_SLAG",
[CC_OP_SLA_32] = "CC_OP_SLA_32",
[CC_OP_SLA_64] = "CC_OP_SLA_64",
};
static inline const char *cc_name(int cc_op)

21
target-s390x/insn-data.def
View File

@ -315,6 +315,27 @@
D(0xa50a, OILH, RI_a, Z, r1_o, i2_16u, r1, 0, ori, 0, 0x1010)
D(0xa50b, OILL, RI_a, Z, r1_o, i2_16u, r1, 0, ori, 0, 0x1000)
/* ROTATE LEFT SINGLE LOGICAL */
C(0xeb1d, RLL, RSY_a, Z, r3_o, sh32, new, r1_32, rll32, 0)
C(0xeb1c, RLLG, RSY_a, Z, r3_o, sh64, r1, 0, rll64, 0)
/* SHIFT LEFT SINGLE */
D(0x8b00, SLA, RS_a, Z, r1, sh32, new, r1_32, sla, 0, 31)
D(0xebdd, SLAK, RSY_a, DO, r3, sh32, new, r1_32, sla, 0, 31)
D(0xeb0b, SLAG, RSY_a, Z, r3, sh64, r1, 0, sla, 0, 63)
/* SHIFT LEFT SINGLE LOGICAL */
C(0x8900, SLL, RS_a, Z, r1_o, sh32, new, r1_32, sll, 0)
C(0xebdf, SLLK, RSY_a, DO, r3_o, sh32, new, r1_32, sll, 0)
C(0xeb0d, SLLG, RSY_a, Z, r3_o, sh64, r1, 0, sll, 0)
/* SHIFT RIGHT SINGLE */
C(0x8a00, SRA, RS_a, Z, r1_32s, sh32, new, r1_32, sra, s32)
C(0xebdc, SRAK, RSY_a, DO, r3_32s, sh32, new, r1_32, sra, s32)
C(0xeb0a, SRAG, RSY_a, Z, r3_o, sh64, r1, 0, sra, s64)
/* SHIFT RIGHT SINGLE LOGICAL */
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)
/* STORE */
C(0x5000, ST, RX_a, Z, r1_o, a2, 0, 0, st32, 0)
C(0xe350, STY, RXY_a, LD, r1_o, a2, 0, 0, st32, 0)

207
target-s390x/translate.c
View File

@ -636,7 +636,8 @@ static void gen_op_calc_cc(DisasContext *s)
case CC_OP_TM_64:
case CC_OP_LTGT_F32:
case CC_OP_LTGT_F64:
case CC_OP_SLAG:
case CC_OP_SLA_32:
case CC_OP_SLA_64:
/* 2 arguments */
gen_helper_calc_cc(cc_op, cpu_env, local_cc_op, cc_src, cc_dst, dummy);
break;
@ -1330,74 +1331,6 @@ static void disas_eb(CPUS390XState *env, DisasContext *s, int op, int r1,
LOG_DISAS("disas_eb: op 0x%x r1 %d r3 %d b2 %d d2 0x%x\n",
op, r1, r3, b2, d2);
switch (op) {
case 0xc: /* SRLG R1,R3,D2(B2) [RSY] */
case 0xd: /* SLLG R1,R3,D2(B2) [RSY] */
case 0xa: /* SRAG R1,R3,D2(B2) [RSY] */
case 0xb: /* SLAG R1,R3,D2(B2) [RSY] */
case 0x1c: /* RLLG R1,R3,D2(B2) [RSY] */
if (b2) {
tmp = get_address(s, 0, b2, d2);
tcg_gen_andi_i64(tmp, tmp, 0x3f);
} else {
tmp = tcg_const_i64(d2 & 0x3f);
}
switch (op) {
case 0xc:
tcg_gen_shr_i64(regs[r1], regs[r3], tmp);
break;
case 0xd:
tcg_gen_shl_i64(regs[r1], regs[r3], tmp);
break;
case 0xa:
tcg_gen_sar_i64(regs[r1], regs[r3], tmp);
break;
case 0xb:
tmp2 = tcg_temp_new_i64();
tmp3 = tcg_temp_new_i64();
gen_op_update2_cc_i64(s, CC_OP_SLAG, regs[r3], tmp);
tcg_gen_shl_i64(tmp2, regs[r3], tmp);
/* override sign bit with source sign */
tcg_gen_andi_i64(tmp2, tmp2, ~0x8000000000000000ULL);
tcg_gen_andi_i64(tmp3, regs[r3], 0x8000000000000000ULL);
tcg_gen_or_i64(regs[r1], tmp2, tmp3);
tcg_temp_free_i64(tmp2);
tcg_temp_free_i64(tmp3);
break;
case 0x1c:
tcg_gen_rotl_i64(regs[r1], regs[r3], tmp);
break;
default:
tcg_abort();
break;
}
if (op == 0xa) {
set_cc_s64(s, regs[r1]);
}
tcg_temp_free_i64(tmp);
break;
case 0x1d: /* RLL R1,R3,D2(B2) [RSY] */
if (b2) {
tmp = get_address(s, 0, b2, d2);
tcg_gen_andi_i64(tmp, tmp, 0x3f);
} else {
tmp = tcg_const_i64(d2 & 0x3f);
}
tmp32_1 = tcg_temp_new_i32();
tmp32_2 = load_reg32(r3);
tcg_gen_trunc_i64_i32(tmp32_1, tmp);
switch (op) {
case 0x1d:
tcg_gen_rotl_i32(tmp32_1, tmp32_2, tmp32_1);
break;
default:
tcg_abort();
break;
}
store_reg32(r1, tmp32_1);
tcg_temp_free_i64(tmp);
tcg_temp_free_i32(tmp32_1);
tcg_temp_free_i32(tmp32_2);
break;
case 0x4: /* LMG R1,R3,D2(B2) [RSE] */
case 0x24: /* STMG R1,R3,D2(B2) [RSE] */
stm_len = 8;
@ -2355,35 +2288,6 @@ static void disas_s390_insn(CPUS390XState *env, DisasContext *s)
LOG_DISAS("opc 0x%x\n", opc);
switch (opc) {
case 0x88: /* SRL R1,D2(B2) [RS] */
case 0x89: /* SLL R1,D2(B2) [RS] */
case 0x8a: /* SRA 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);
tmp32_1 = load_reg32(r1);
tmp32_2 = tcg_temp_new_i32();
tcg_gen_trunc_i64_i32(tmp32_2, tmp);
tcg_gen_andi_i32(tmp32_2, tmp32_2, 0x3f);
switch (opc) {
case 0x88:
tcg_gen_shr_i32(tmp32_1, tmp32_1, tmp32_2);
break;
case 0x89:
tcg_gen_shl_i32(tmp32_1, tmp32_1, tmp32_2);
break;
case 0x8a:
tcg_gen_sar_i32(tmp32_1, tmp32_1, tmp32_2);
set_cc_s32(s, tmp32_1);
break;
default:
tcg_abort();
}
store_reg32(r1, tmp32_1);
tcg_temp_free_i64(tmp);
tcg_temp_free_i32(tmp32_1);
tcg_temp_free_i32(tmp32_2);
break;
case 0x8c: /* SRDL R1,D2(B2) [RS] */
case 0x8d: /* SLDL R1,D2(B2) [RS] */
case 0x8e: /* SRDA R1,D2(B2) [RS] */
@ -3029,6 +2933,20 @@ struct DisasInsn {
/* ====================================================================== */
/* Miscelaneous helpers, used by several operations. */
static void help_l2_shift(DisasContext *s, DisasFields *f,
DisasOps *o, int mask)
{
int b2 = get_field(f, b2);
int d2 = get_field(f, d2);
if (b2 == 0) {
o->in2 = tcg_const_i64(d2 & mask);
} else {
o->in2 = get_address(s, 0, b2, d2);
tcg_gen_andi_i64(o->in2, o->in2, mask);
}
}
static ExitStatus help_goto_direct(DisasContext *s, uint64_t dest)
{
if (dest == s->next_pc) {
@ -3591,6 +3509,59 @@ static ExitStatus op_ori(DisasContext *s, DisasOps *o)
return NO_EXIT;
}
static ExitStatus op_rll32(DisasContext *s, DisasOps *o)
{
TCGv_i32 t1 = tcg_temp_new_i32();
TCGv_i32 t2 = tcg_temp_new_i32();
TCGv_i32 to = tcg_temp_new_i32();
tcg_gen_trunc_i64_i32(t1, o->in1);
tcg_gen_trunc_i64_i32(t2, o->in2);
tcg_gen_rotl_i32(to, t1, t2);
tcg_gen_extu_i32_i64(o->out, to);
tcg_temp_free_i32(t1);
tcg_temp_free_i32(t2);
tcg_temp_free_i32(to);
return NO_EXIT;
}
static ExitStatus op_rll64(DisasContext *s, DisasOps *o)
{
tcg_gen_rotl_i64(o->out, o->in1, o->in2);
return NO_EXIT;
}
static ExitStatus op_sla(DisasContext *s, DisasOps *o)
{
uint64_t sign = 1ull << s->insn->data;
enum cc_op cco = s->insn->data == 31 ? CC_OP_SLA_32 : CC_OP_SLA_64;
gen_op_update2_cc_i64(s, cco, o->in1, o->in2);
tcg_gen_shl_i64(o->out, o->in1, o->in2);
/* The arithmetic left shift is curious in that it does not affect
the sign bit. Copy that over from the source unchanged. */
tcg_gen_andi_i64(o->out, o->out, ~sign);
tcg_gen_andi_i64(o->in1, o->in1, sign);
tcg_gen_or_i64(o->out, o->out, o->in1);
return NO_EXIT;
}
static ExitStatus op_sll(DisasContext *s, DisasOps *o)
{
tcg_gen_shl_i64(o->out, o->in1, o->in2);
return NO_EXIT;
}
static ExitStatus op_sra(DisasContext *s, DisasOps *o)
{
tcg_gen_sar_i64(o->out, o->in1, o->in2);
return NO_EXIT;
}
static ExitStatus op_srl(DisasContext *s, DisasOps *o)
{
tcg_gen_shr_i64(o->out, o->in1, o->in2);
return NO_EXIT;
}
#ifndef CONFIG_USER_ONLY
static ExitStatus op_ssm(DisasContext *s, DisasOps *o)
{
@ -3961,6 +3932,18 @@ static void in1_r1_o(DisasContext *s, DisasFields *f, DisasOps *o)
o->g_in1 = true;
}
static void in1_r1_32s(DisasContext *s, DisasFields *f, DisasOps *o)
{
o->in1 = tcg_temp_new_i64();
tcg_gen_ext32s_i64(o->in1, regs[get_field(f, r1)]);
}
static void in1_r1_32u(DisasContext *s, DisasFields *f, DisasOps *o)
{
o->in1 = tcg_temp_new_i64();
tcg_gen_ext32u_i64(o->in1, regs[get_field(f, r1)]);
}
static void in1_r1p1(DisasContext *s, DisasFields *f, DisasOps *o)
{
/* ??? Specification exception: r1 must be even. */
@ -4002,6 +3985,24 @@ static void in1_r3(DisasContext *s, DisasFields *f, DisasOps *o)
o->in1 = load_reg(get_field(f, r3));
}
static void in1_r3_o(DisasContext *s, DisasFields *f, DisasOps *o)
{
o->in1 = regs[get_field(f, r3)];
o->g_in1 = true;
}
static void in1_r3_32s(DisasContext *s, DisasFields *f, DisasOps *o)
{
o->in1 = tcg_temp_new_i64();
tcg_gen_ext32s_i64(o->in1, regs[get_field(f, r3)]);
}
static void in1_r3_32u(DisasContext *s, DisasFields *f, DisasOps *o)
{
o->in1 = tcg_temp_new_i64();
tcg_gen_ext32u_i64(o->in1, regs[get_field(f, r3)]);
}
static void in1_e1(DisasContext *s, DisasFields *f, DisasOps *o)
{
o->in1 = load_freg32_i64(get_field(f, r1));
@ -4153,6 +4154,16 @@ static void in2_ri2(DisasContext *s, DisasFields *f, DisasOps *o)
o->in2 = tcg_const_i64(s->pc + (int64_t)get_field(f, i2) * 2);
}
static void in2_sh32(DisasContext *s, DisasFields *f, DisasOps *o)
{
help_l2_shift(s, f, o, 31);
}
static void in2_sh64(DisasContext *s, DisasFields *f, DisasOps *o)
{
help_l2_shift(s, f, o, 63);
}
static void in2_m2_8u(DisasContext *s, DisasFields *f, DisasOps *o)
{
in2_a2(s, f, o);