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LinuxÏÂGCC±à³ÌËĸö¹ý³Ì(2)


2)±àÒë½×¶Î
(Compiling)
µÚ¶þ²½½øÐеÄÊDZàÒë½×¶Î£¬ÔÚÕâ¸ö½×¶ÎÖУ¬GccÊ×ÏÈÒª¼ì²é´úÂëµÄ¹æ·¶ÐÔ¡¢ÊÇ·ñÓÐÓï·¨´íÎóµÈ£¬ÒÔÈ·¶¨´úÂëµÄʵ¼ÊÒª×öµÄ¹¤×÷£¬ÔÚ¼ì²éÎÞÎóºó£¬Gcc°Ñ´úÂë·­Òë³É»ã±àÓïÑÔ¡£Óû§¿ÉÒÔʹÓÔ-S”Ñ¡ÏîÀ´½øÐв鿴£¬¸ÃÑ¡ÏîÖ»½øÐбàÒë¶ø²»½øÐлã±à£¬Éú³É»ã±à´úÂë¡£
Ñ¡Ïî -S
Ó÷¨£º[root]# gcc –S hello.i –o hello.s
×÷Ó㺽«Ô¤´¦ÀíÊä³öÎļþhello.i»ã±à³Éhello.sÎļþ¡£
[root@richard hello-gcc]# ls
hello.c  hello.i  hello.s
ÈçÏÂΪhello.s»ã±à´úÂë
[root@richard hello-gcc]# vi hello.s
.file   "hello.c"
.section    .rodata
.LC0:
.string "hello world!\r\n"
.text
.globl main
.type   main,@function
main:
pushl   %ebp
movl    %esp, %ebp
subl    $8, %esp
andl    $-16, %esp
movl    $0, %eax
subl    %eax, %esp
subl    $12, %esp
pushl   $.LC0
call    printf
addl    $16, %esp
movl    $0, %eax
leave
ret
.Lfe1:
.size   main,.Lfe1-main
.ident  "GCC: (GNU) 3.2.2 20030222 (Red Hat Linux 3.2.2-5)"
3)»ã±à½×¶Î(Assembling)
»ã±à½×¶ÎÊǰѱàÒë½×¶ÎÉú³ÉµÄ”.s”Îļþת³É¶þ½øÖÆÄ¿±ê´úÂë.
Ñ¡Ïî -c
Ó÷¨£º[root]# gcc –c hello.s –o hello.o
×÷Ó㺽«»ã±àÊä³öÎļþtest.s±àÒëÊä³ötest.oÎļþ¡£
[root]# gcc -c hello.s -o hello.o
[root]# ls
hello.c  hello.i  hello.o  hello.s


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