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| author | Alan Modra <amodra@gmail.com> | 2018-11-06 13:23:20 +1030 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2018-11-06 21:17:28 +1030 |
| commit | 2eac3da184459607a476ebb5dcebd6e0acf9fefa (patch) | |
| tree | 1c7fc7d3b85104c6273a9bcfee2a461da2db1830 /gas/config/tc-ppc.c | |
| parent | 4dd4e6394509d58685daea52cc6947c45fd7ee9d (diff) | |
| download | gdb-2eac3da184459607a476ebb5dcebd6e0acf9fefa.zip gdb-2eac3da184459607a476ebb5dcebd6e0acf9fefa.tar.gz gdb-2eac3da184459607a476ebb5dcebd6e0acf9fefa.tar.bz2 | |
PowerPC instruction operand flag validation
This adds another check that might have saved me a little time
recently if it had been present.
* config/tc-ppc.c (insn_validate): Check that optional operands
are not followed by non-optional operands.
Diffstat (limited to 'gas/config/tc-ppc.c')
| -rw-r--r-- | gas/config/tc-ppc.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/gas/config/tc-ppc.c b/gas/config/tc-ppc.c index d587a50..694c47a 100644 --- a/gas/config/tc-ppc.c +++ b/gas/config/tc-ppc.c @@ -1514,6 +1514,7 @@ insn_validate (const struct powerpc_opcode *op) /* The operands must not overlap the opcode or each other. */ for (o = op->operands; *o; ++o) { + bfd_boolean optional = FALSE; if (*o >= num_powerpc_operands) { as_bad (_("operand index error for %s"), op->name); @@ -1538,6 +1539,14 @@ insn_validate (const struct powerpc_opcode *op) } omask |= mask; } + if ((operand->flags & PPC_OPERAND_OPTIONAL) != 0) + optional = TRUE; + else if (optional) + { + as_bad (_("non-optional operand %d follows optional operand in %s"), + (int) (o - op->operands), op->name); + return TRUE; + } } } return FALSE; |