diff options
Diffstat (limited to 'gas/config/tc-i386.c')
| -rw-r--r-- | gas/config/tc-i386.c | 28 |
1 files changed, 16 insertions, 12 deletions
diff --git a/gas/config/tc-i386.c b/gas/config/tc-i386.c index 2996751..e787215 100644 --- a/gas/config/tc-i386.c +++ b/gas/config/tc-i386.c @@ -5344,19 +5344,23 @@ build_modrm_byte (void) i.vex.register_specifier = i.op[vex_reg].regs; } - /* If there is an extension opcode to put here, the - register number must be put into the regmem field. */ - if (i.tm.extension_opcode != None) + /* Don't set OP operand twice. */ + if (vex_reg != op) { - i.rm.regmem = i.op[op].regs->reg_num; - if ((i.op[op].regs->reg_flags & RegRex) != 0) - i.rex |= REX_B; - } - else - { - i.rm.reg = i.op[op].regs->reg_num; - if ((i.op[op].regs->reg_flags & RegRex) != 0) - i.rex |= REX_R; + /* If there is an extension opcode to put here, the + register number must be put into the regmem field. */ + if (i.tm.extension_opcode != None) + { + i.rm.regmem = i.op[op].regs->reg_num; + if ((i.op[op].regs->reg_flags & RegRex) != 0) + i.rex |= REX_B; + } + else + { + i.rm.reg = i.op[op].regs->reg_num; + if ((i.op[op].regs->reg_flags & RegRex) != 0) + i.rex |= REX_R; + } } /* Now, if no memory operand has set i.rm.mode = 0, 1, 2 we |