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binutils-gdb
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Add error checking for Co-Processor instructions

This commit is contained in:
Tomer Levi 2004-10-07 14:48:08 +00:00
parent 8fdd7217a7
commit e3c52c539f
1 changed files with 17 additions and 1 deletions
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18
gas/config/tc-crx.c
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@ -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)
{