diff options
Diffstat (limited to 'gas/config/tc-crx.c')
| -rw-r--r-- | gas/config/tc-crx.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/gas/config/tc-crx.c b/gas/config/tc-crx.c index 6c144b3..b1063a0 100644 --- a/gas/config/tc-crx.c +++ b/gas/config/tc-crx.c @@ -1710,7 +1710,7 @@ parse_insn (ins *insn, char *operands) return; } - /* Handle load/stor post-increment instructions. */ + /* Handle load/stor unique instructions before parsing. */ if (IS_INSN_TYPE (LD_STOR_INS)) handle_LoadStor (operands); @@ -2111,6 +2111,22 @@ assemble_insn (char *mnemonic, ins *insn) else /* Full match - print the final image. */ { + /* Error checking for Co-Processor instructions : + The internal coprocessor 0 can only accept the + "mtcr" and "mfcr" instructions. */ + if (IS_INSN_TYPE (COP_REG_INS) || IS_INSN_TYPE (COPS_REG_INS) + || IS_INSN_TYPE (COP_BRANCH_INS)) + { + /* The coprocessor id is always the first argument. */ + if ((instruction->operands[0].op_type == i4) + && (insn->arg[0].constant == 0) + && (! IS_INSN_MNEMONIC ("mtcr") + && ! IS_INSN_MNEMONIC ("mfcr"))) + { + as_bad (_("Internal Coprocessor 0 doesn't support instruction `%s'"), + mnemonic); + } + } /* Handle positive constants. */ if (!signflag) { |