diff options
Diffstat (limited to 'opcodes/aarch64-opc.c')
| -rw-r--r-- | opcodes/aarch64-opc.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/opcodes/aarch64-opc.c b/opcodes/aarch64-opc.c index 7a73c7e..30501fc 100644 --- a/opcodes/aarch64-opc.c +++ b/opcodes/aarch64-opc.c @@ -2058,6 +2058,23 @@ aarch64_match_operands_constraint (aarch64_inst *inst, DEBUG_TRACE ("enter"); + /* Check for cases where a source register needs to be the same as the + destination register. Do this before matching qualifiers since if + an instruction has both invalid tying and invalid qualifiers, + the error about qualifiers would suggest several alternative + instructions that also have invalid tying. */ + i = inst->opcode->tied_operand; + if (i > 0 && (inst->operands[0].reg.regno != inst->operands[i].reg.regno)) + { + if (mismatch_detail) + { + mismatch_detail->kind = AARCH64_OPDE_UNTIED_OPERAND; + mismatch_detail->index = i; + mismatch_detail->error = NULL; + } + return 0; + } + /* Match operands' qualifier. *INST has already had qualifier establish for some, if not all, of its operands; we need to find out whether these established |