diff options
Diffstat (limited to 'gas/config/tc-i386.c')
| -rw-r--r-- | gas/config/tc-i386.c | 35 |
1 files changed, 34 insertions, 1 deletions
diff --git a/gas/config/tc-i386.c b/gas/config/tc-i386.c index c235413..75c0878 100644 --- a/gas/config/tc-i386.c +++ b/gas/config/tc-i386.c @@ -1269,7 +1269,8 @@ md_assemble (line) } if (!is_space_char (*l) && *l != END_OF_INSN - && *l != PREFIX_SEPARATOR) + && *l != PREFIX_SEPARATOR + && *l != ',') { as_bad (_("invalid character %s in mnemonic"), output_invalid (*l)); @@ -1360,6 +1361,38 @@ md_assemble (line) } } + if (current_templates->start->opcode_modifier & (Jump | JumpByte)) + { + /* Check for a branch hint. We allow ",pt" and ",pn" for + predict taken and predict not taken respectively. + I'm not sure that branch hints actually do anything on loop + and jcxz insns (JumpByte) for current Pentium4 chips. They + may work in the future and it doesn't hurt to accept them + now. */ + if (l[0] == ',' && l[1] == 'p') + { + if (l[2] == 't') + { + if (! add_prefix (DS_PREFIX_OPCODE)) + return; + l += 3; + } + else if (l[2] == 'n') + { + if (! add_prefix (CS_PREFIX_OPCODE)) + return; + l += 3; + } + } + } + /* Any other comma loses. */ + if (*l == ',') + { + as_bad (_("invalid character %s in mnemonic"), + output_invalid (*l)); + return; + } + /* Check if instruction is supported on specified architecture. */ if (cpu_arch_flags != 0) { |