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target/arm: Convert VMOV (register) to decodetree

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Backports commit 17552b979ebb9848a534c25ebed18a1072710058 from qemu
This commit is contained in:
Peter Maydell 2019-06-13 18:49:45 -04:00 committed by Lioncash
parent ee30962891
commit a75a3e321f
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GPG key ID: 4E3C3CC1031BA9C7
3 changed files with 16 additions and 7 deletions
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10
qemu/target/arm/translate-vfp.inc.c
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@ -1914,6 +1914,16 @@ static bool trans_VMOV_imm_dp(DisasContext *s, arg_VMOV_imm_dp *a)
return true;
}
static bool trans_VMOV_reg_sp(DisasContext *s, arg_VMOV_reg_sp *a)
{
return do_vfp_2op_sp(s, tcg_gen_mov_i32, a->vd, a->vm);
}
static bool trans_VMOV_reg_dp(DisasContext *s, arg_VMOV_reg_dp *a)
{
return do_vfp_2op_dp(s, tcg_gen_mov_i64, a->vd, a->vm);
}
static bool trans_VABS_sp(DisasContext *s, arg_VABS_sp *a)
{
return do_vfp_2op_sp(s, gen_helper_vfp_abss, a->vd, a->vm);

8
qemu/target/arm/translate.c
View file

@ -3190,7 +3190,7 @@ static int disas_vfp_insn(DisasContext *s, uint32_t insn)
return 1;
case 15:
switch (rn) {
case 1 ... 3:
case 0 ... 3:
/* Already handled by decodetree */
return 1;
default:
@ -3203,9 +3203,6 @@ static int disas_vfp_insn(DisasContext *s, uint32_t insn)
if (op == 15) {
/* rn is opcode, encoded as per VFP_SREG_N. */
switch (rn) {
case 0x00: /* vmov */
break;
case 0x04: /* vcvtb.f64.f16, vcvtb.f32.f16 */
case 0x05: /* vcvtt.f64.f16, vcvtt.f32.f16 */
/*
@ -3378,9 +3375,6 @@ static int disas_vfp_insn(DisasContext *s, uint32_t insn)
switch (op) {
case 15: /* extension space */
switch (rn) {
case 0: /* cpy */
/* no-op */
break;
case 4: /* vcvtb.f32.f16, vcvtb.f64.f16 */
{
TCGv_ptr fpst = get_fpstatus_ptr(s, false);

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

@ -157,6 +157,11 @@ VMOV_imm_sp ---- 1110 1.11 imm4h:4 .... 1010 0000 imm4l:4 \
VMOV_imm_dp ---- 1110 1.11 imm4h:4 .... 1011 0000 imm4l:4 \
vd=%vd_dp
VMOV_reg_sp ---- 1110 1.11 0000 .... 1010 01.0 .... \
vd=%vd_sp vm=%vm_sp
VMOV_reg_dp ---- 1110 1.11 0000 .... 1011 01.0 .... \
vd=%vd_dp vm=%vm_dp
VABS_sp ---- 1110 1.11 0000 .... 1010 11.0 .... \
vd=%vd_sp vm=%vm_sp
VABS_dp ---- 1110 1.11 0000 .... 1011 11.0 .... \