Implementation of assembly language learning addition

The following code demonstrates the addition of a and b two integers, the compilation environment Ubuntu14.04 (32 bits).

• Code

 .section. Data  a: . int  10  b: . int  20  format: . Asciz  " %d\n  "  .section. Text.global _start  _start:          Movl A,%edx #将a送入寄存器edx addl B,%edx #将a +b value into register edx PUSHL%edx  PUSHL $format  call   printf MOVL $  0  , (%ESP)  call  Exit 

• Compile

As Plus.s-o PLUS.O

• Link

Ld-lc-i/lib/ld-linux.so.2 Plus.o-o Plus

• Perform

./plus

Implementation of assembly language learning addition