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target/arm: Convert VADD to decodetree

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Convert the VADD instruction to decodetree.

Backports commit ce28b303716e7eca3f3765bf6776d722ebbe1122 from qemu
This commit is contained in:
Peter Maydell 2019-06-13 18:15:50 -04:00 committed by Lioncash
parent 06584edf61
commit f56f0342ad
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GPG key ID: 4E3C3CC1031BA9C7
3 changed files with 16 additions and 5 deletions
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10
qemu/target/arm/translate-vfp.inc.c
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@ -1470,3 +1470,13 @@ static bool trans_VNMUL_dp(DisasContext *s, arg_VNMUL_sp *a)
{
return do_vfp_3op_dp(s, gen_VNMUL_dp, a->vd, a->vn, a->vm, false);
}
static bool trans_VADD_sp(DisasContext *s, arg_VADD_sp *a)
{
return do_vfp_3op_sp(s, gen_helper_vfp_adds, a->vd, a->vn, a->vm, false);
}
static bool trans_VADD_dp(DisasContext *s, arg_VADD_sp *a)
{
return do_vfp_3op_dp(s, gen_helper_vfp_addd, a->vd, a->vn, a->vm, false);
}

6
qemu/target/arm/translate.c
View file

@ -1442,7 +1442,6 @@ static inline void gen_vfp_##name(DisasContext *s, int dp)
tcg_temp_free_ptr(tcg_ctx, fpst); \
}
VFP_OP2(add)
VFP_OP2(sub)
VFP_OP2(div)
@ -3213,7 +3212,7 @@ static int disas_vfp_insn(DisasContext *s, uint32_t insn)
rn = VFP_SREG_N(insn);
switch (op) {
case 0 ... 5:
case 0 ... 6:
/* Already handled by decodetree */
return 1;
default:
@ -3399,9 +3398,6 @@ static int disas_vfp_insn(DisasContext *s, uint32_t insn)
for (;;) {
/* Perform the calculation. */
switch (op) {
case 6: /* add: fn + fm */
gen_vfp_add(s, dp);
break;
case 7: /* sub: fn - fm */
gen_vfp_sub(s, dp);
break;

5
qemu/target/arm/vfp.decode
View file

@ -127,3 +127,8 @@ VNMUL_sp ---- 1110 0.10 .... .... 1010 .1.0 .... \
vm=%vm_sp vn=%vn_sp vd=%vd_sp
VNMUL_dp ---- 1110 0.10 .... .... 1011 .1.0 .... \
vm=%vm_dp vn=%vn_dp vd=%vd_dp
VADD_sp ---- 1110 0.11 .... .... 1010 .0.0 .... \
vm=%vm_sp vn=%vn_sp vd=%vd_sp
VADD_dp ---- 1110 0.11 .... .... 1011 .0.0 .... \
vm=%vm_dp vn=%vn_dp vd=%vd_dp