The following i386/x86-64 specific disassembler options are supported for use
with the -M switch (multiple options should be separated by commas):
下面是针对于i386/x86-64中具体的反汇编格式的选择，使用-M来选择。多个参数使用逗号隔开。
i386/x86-64-M
x86-64 Disassemble in 64bit mode
i386 Disassemble in 32bit mode
i8086 Disassemble in 16bit mode
att Display instruction in AT&T syntax
intel Display instruction in Intel syntax
addr64 Assume 64bit address size
addr32 Assume 32bit address size
addr16 Assume 16bit address size
data32 Assume 32bit data size
data16 Assume 16bit data size
suffix Always display instruction suffix in AT&T syntax
objdump -d -mi386:x86-64:intel ./t.so
gdb反汇编改为intel/AT&T语法:
set disassembly-flavor intel
set disassembly-flavor att