U E D R , A S I H C RSS

C/Assembly/Main

šฐ„  ธฐ–ต •˜๋Š” ฒƒ ๋ณตŠต.

~cpp 
int main(){ return; }

.globl main
        .type   main, @function
main:
        pushl   %ebp            // ˜„žฌ˜ ๋ช…๋ –ด Counter๋ฅผ Stack—  €žฅ•จ. ”„๋กœธ๋žจด ๋๋‚˜๋ฉด stack—„œ‹‹œ บผ๋ƒ„.
        movl    %esp, %ebp
        subl    $8, %esp        // ๋นˆ Šคƒ • ‹น
        andl    $-16, %esp

        movl    $0, %eax        // eax = 0
        addl    $15, %eax       // eax = 15
        addl    $15, %eax       // eax = 15  11110(Bin)
        shrl    $4, %eax        // eax = 0xF0000001   11110000000000000000000000000001(bin)
        sall    $4, %eax        // eax = 0x1F         00000000000000000000000000011111(bin)

        subl    %eax, %esp

        movl    $0, %eax        // return 0;
        leave                   // ”„๋กœธ๋žจ˜ ข…๋ฃŒ. stack—„œ ”„๋กœธ๋žจ ‹œž‘  „˜ ๋ช…๋ –ด๋ฅผ บผ๋‚ด %ebp— ‘–ด ๋„ฃ๋Š” —ญ• .
        ret                     // ”„๋กœธ๋žจข…๋ฃŒ.

push - ret
Windows OSฐ€ •„‹Œ DOS OS๋Š” ๋ฉ”๋ชจ๋ฆฌ˜ ด€๋ฆฌ๋ฅผ Kernel(OS˜ Core)•„‹Œ Program—„œ •ฃผฒŒ ๋œ‹ค.
๋”ฐ๋„œ ”„๋กœธ๋žจ‹œž‘•˜  ๋‚˜ฐˆ๋•Œ—๋Š” –ด๋””„œ ”„๋กœธ๋žจ„ ‹œž‘•˜  ๋๋ƒˆ๋Š”ง€ œ„˜๋ฅผ  €žฅ(push)•˜  ผญ ๋ฐ˜™˜(leave)•••œ‹ค.
Valid XHTML 1.0! Valid CSS! powered by MoniWiki
last modified 2021-02-07 05:22:47
Processing time 0.0079 sec