diff options
Diffstat (limited to 'target')
| -rw-r--r-- | target/s390x/translate.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/target/s390x/translate.c b/target/s390x/translate.c index 49e5e2cc58..67049975fa 100644 --- a/target/s390x/translate.c +++ b/target/s390x/translate.c @@ -6094,6 +6094,11 @@ static const DisasInsn *extract_insn(CPUS390XState *env, DisasContext *s, return info; } +static bool is_afp_reg(int reg) +{ + return reg % 2 || reg > 6; +} + static DisasJumpType translate_one(CPUS390XState *env, DisasContext *s) { const DisasInsn *insn; @@ -6120,6 +6125,34 @@ static DisasJumpType translate_one(CPUS390XState *env, DisasContext *s) } #endif + /* process flags */ + if (insn->flags) { + /* if AFP is not enabled, instructions and registers are forbidden */ + if (!(s->base.tb->flags & FLAG_MASK_AFP)) { + uint8_t dxc = 0; + + if ((insn->flags & IF_AFP1) && is_afp_reg(get_field(&f, r1))) { + dxc = 1; + } + if ((insn->flags & IF_AFP2) && is_afp_reg(get_field(&f, r2))) { + dxc = 1; + } + if ((insn->flags & IF_AFP3) && is_afp_reg(get_field(&f, r3))) { + dxc = 1; + } + if (insn->flags & IF_BFP) { + dxc = 2; + } + if (insn->flags & IF_DFP) { + dxc = 3; + } + if (dxc) { + gen_data_exception(dxc); + return DISAS_NORETURN; + } + } + } + /* Check for insn specification exceptions. */ if (insn->spec) { int spec = insn->spec, excp = 0, r; |