diff options
Diffstat (limited to 'target/arm/translate.c')
| -rw-r--r-- | target/arm/translate.c | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/target/arm/translate.c b/target/arm/translate.c index c9186b6195..493c627bcf 100644 --- a/target/arm/translate.c +++ b/target/arm/translate.c @@ -10217,6 +10217,14 @@ static int disas_thumb2_insn(CPUARMState *env, DisasContext *s, uint16_t insn_hw break; case 6: case 7: case 14: case 15: /* Coprocessor. */ + if (arm_dc_feature(s, ARM_FEATURE_M)) { + /* We don't currently implement M profile FP support, + * so this entire space should give a NOCP fault. + */ + gen_exception_insn(s, 4, EXCP_NOCP, syn_uncategorized(), + default_exception_el(s)); + break; + } if (((insn >> 24) & 3) == 3) { /* Translate into the equivalent ARM encoding. */ insn = (insn & 0xe2ffffff) | ((insn & (1 << 28)) >> 4) | (1 << 28); @@ -11719,12 +11727,12 @@ void gen_intermediate_code(CPUARMState *env, TranslationBlock *tb) break; } #else - if (dc->pc >= 0xfffffff0 && arm_dc_feature(dc, ARM_FEATURE_M)) { - /* We always get here via a jump, so know we are not in a - conditional execution block. */ - gen_exception_internal(EXCP_EXCEPTION_EXIT); - dc->is_jmp = DISAS_EXC; - break; + if (arm_dc_feature(dc, ARM_FEATURE_M)) { + /* Branches to the magic exception-return addresses should + * already have been caught via the arm_v7m_unassigned_access hook, + * and never get here. + */ + assert(dc->pc < 0xfffffff0); } #endif |