ShuriZma
/
xemu
mirror of https://github.com/xemu-project/xemu.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

target/arm: Reject copy w/ shifted byte early 

Remove the unparsed extractions in trans_CPY_{m,z}_i which are intended
to reject an 8-bit shift of an 8-bit constant for 8-bit element.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220527181907.189259-74-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Richard Henderson 2022-05-27 11:18:26 -07:00 committed by Peter Maydell
parent 3a40518079
commit 7836c9414f
2 changed files with 8 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
target/arm/sve.decode
View File

@ -528,8 +528,14 @@ DUPM 00000101 11 0000 dbm:13 rd:5
FCPY 00000101 .. 01 .... 110 imm:8 ..... @rdn_pg4 FCPY 00000101 .. 01 .... 110 imm:8 ..... @rdn_pg4
# SVE copy integer immediate (predicated) # SVE copy integer immediate (predicated)
CPY_m_i 00000101 .. 01 .... 01 . ........ ..... @rdn_pg4 imm=%sh8_i8s {
CPY_z_i 00000101 .. 01 .... 00 . ........ ..... @rdn_pg4 imm=%sh8_i8s INVALID 00000101 00 01 ---- 01 1 -------- -----
CPY_m_i 00000101 .. 01 .... 01 . ........ ..... @rdn_pg4 imm=%sh8_i8s
}
{
INVALID 00000101 00 01 ---- 00 1 -------- -----
CPY_z_i 00000101 .. 01 .... 00 . ........ ..... @rdn_pg4 imm=%sh8_i8s
}
### SVE Permute - Extract Group ### SVE Permute - Extract Group

6
target/arm/translate-sve.c
View File

@ -2024,9 +2024,6 @@ static bool trans_FCPY(DisasContext *s, arg_FCPY *a)
static bool trans_CPY_m_i(DisasContext *s, arg_rpri_esz *a) static bool trans_CPY_m_i(DisasContext *s, arg_rpri_esz *a)
{ {
if (a->esz == 0 && extract32(s->insn, 13, 1)) {
return false;
}
if (sve_access_check(s)) { if (sve_access_check(s)) {
do_cpy_m(s, a->esz, a->rd, a->rn, a->pg, tcg_constant_i64(a->imm)); do_cpy_m(s, a->esz, a->rd, a->rn, a->pg, tcg_constant_i64(a->imm));
} }
@ -2040,9 +2037,6 @@ static bool trans_CPY_z_i(DisasContext *s, arg_CPY_z_i *a)
gen_helper_sve_cpy_z_s, gen_helper_sve_cpy_z_d, gen_helper_sve_cpy_z_s, gen_helper_sve_cpy_z_d,
}; };
if (a->esz == 0 && extract32(s->insn, 13, 1)) {
return false;
}
if (sve_access_check(s)) { if (sve_access_check(s)) {
unsigned vsz = vec_full_reg_size(s); unsigned vsz = vec_full_reg_size(s);
tcg_gen_gvec_2i_ool(vec_full_reg_offset(s, a->rd), tcg_gen_gvec_2i_ool(vec_full_reg_offset(s, a->rd),