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target/microblaze: Convert dec_pattern to decodetree 

Tested-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2020-08-17 14:19:33 -07:00
parent 58b48b637d
commit 607f576762
2 changed files with 22 additions and 49 deletions
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4
target/microblaze/insns.decode
View File

@ -44,6 +44,10 @@ addikc 001110 ..... ..... ................ @typeb
cmp 000101 ..... ..... ..... 000 0000 0001 @typea
cmpu 000101 ..... ..... ..... 000 0000 0011 @typea
pcmpbf 100000 ..... ..... ..... 100 0000 0000 @typea
pcmpeq 100010 ..... ..... ..... 100 0000 0000 @typea
pcmpne 100011 ..... ..... ..... 100 0000 0000 @typea
rsub 000001 ..... ..... ..... 000 0000 0000 @typea
rsubc 000011 ..... ..... ..... 000 0000 0000 @typea
rsubk 000101 ..... ..... ..... 000 0000 0000 @typea

67
target/microblaze/translate.c
View File

@ -279,6 +279,10 @@ static bool do_typeb_val(DisasContext *dc, arg_typeb *arg, bool side_effects,
static bool trans_##NAME(DisasContext *dc, arg_typea *a) \
{ return do_typea(dc, a, SE, FN); }
#define DO_TYPEA_CFG(NAME, CFG, SE, FN) \
static bool trans_##NAME(DisasContext *dc, arg_typea *a) \
{ return dc->cpu->cfg.CFG && do_typea(dc, a, SE, FN); }
#define DO_TYPEBI(NAME, SE, FNI) \
static bool trans_##NAME(DisasContext *dc, arg_typeb *a) \
{ return do_typeb_imm(dc, a, SE, FNI); }
@ -350,6 +354,20 @@ static void gen_cmpu(TCGv_i32 out, TCGv_i32 ina, TCGv_i32 inb)
DO_TYPEA(cmp, false, gen_cmp)
DO_TYPEA(cmpu, false, gen_cmpu)
static void gen_pcmpeq(TCGv_i32 out, TCGv_i32 ina, TCGv_i32 inb)
{
tcg_gen_setcond_i32(TCG_COND_EQ, out, ina, inb);
}
static void gen_pcmpne(TCGv_i32 out, TCGv_i32 ina, TCGv_i32 inb)
{
tcg_gen_setcond_i32(TCG_COND_NE, out, ina, inb);
}
DO_TYPEA_CFG(pcmpbf, use_pcmp_instr, false, gen_helper_pcmpbf)
DO_TYPEA_CFG(pcmpeq, use_pcmp_instr, false, gen_pcmpeq)
DO_TYPEA_CFG(pcmpne, use_pcmp_instr, false, gen_pcmpne)
/* No input carry, but output carry. */
static void gen_rsub(TCGv_i32 out, TCGv_i32 ina, TCGv_i32 inb)
{
@ -413,49 +431,10 @@ static bool trans_zero(DisasContext *dc, arg_zero *arg)
return false;
}
static void dec_pattern(DisasContext *dc)
{
unsigned int mode;
if (trap_illegal(dc, !dc->cpu->cfg.use_pcmp_instr)) {
return;
}
mode = dc->opcode & 3;
switch (mode) {
case 0:
/* pcmpbf. */
if (dc->rd)
gen_helper_pcmpbf(cpu_R[dc->rd], cpu_R[dc->ra], cpu_R[dc->rb]);
break;
case 2:
if (dc->rd) {
tcg_gen_setcond_i32(TCG_COND_EQ, cpu_R[dc->rd],
cpu_R[dc->ra], cpu_R[dc->rb]);
}
break;
case 3:
if (dc->rd) {
tcg_gen_setcond_i32(TCG_COND_NE, cpu_R[dc->rd],
cpu_R[dc->ra], cpu_R[dc->rb]);
}
break;
default:
cpu_abort(CPU(dc->cpu),
"unsupported pattern insn opcode=%x\n", dc->opcode);
break;
}
}
static void dec_and(DisasContext *dc)
{
unsigned int not;
if (!dc->type_b && (dc->imm & (1 << 10))) {
dec_pattern(dc);
return;
}
not = dc->opcode & (1 << 1);
if (!dc->rd)
@ -469,22 +448,12 @@ static void dec_and(DisasContext *dc)
static void dec_or(DisasContext *dc)
{
if (!dc->type_b && (dc->imm & (1 << 10))) {
dec_pattern(dc);
return;
}
if (dc->rd)
tcg_gen_or_i32(cpu_R[dc->rd], cpu_R[dc->ra], *(dec_alu_op_b(dc)));
}
static void dec_xor(DisasContext *dc)
{
if (!dc->type_b && (dc->imm & (1 << 10))) {
dec_pattern(dc);
return;
}
if (dc->rd)
tcg_gen_xor_i32(cpu_R[dc->rd], cpu_R[dc->ra], *(dec_alu_op_b(dc)));
}