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progs/example1b.s
author Christian Urban <christian dot urban at kcl dot ac dot uk>
Thu, 15 Dec 2016 16:13:36 +0000
changeset 504 fd7f1ca1963f
parent 396 2f4296a0ab21
permissions -rw-r--r--
added
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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60f64793266f added assembly programs
Christian Urban <christian dot urban at kcl dot ac dot uk>
parents:
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_foo:
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Christian Urban <christian dot urban at kcl dot ac dot uk>
parents: 395
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  push    %ebp                     ; push current sp onto stack
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Christian Urban <christian dot urban at kcl dot ac dot uk>
parents: 395
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  mov     %esp,%ebp                ; current sp into esp
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Christian Urban <christian dot urban at kcl dot ac dot uk>
parents: 395
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  sub     $0x10,%esp               ; subtract 16 from esp
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Christian Urban <christian dot urban at kcl dot ac dot uk>
parents: 395
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  movl    $0x64636261,-0x6(%ebp)   ; store abcd in ebp - 6
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Christian Urban <christian dot urban at kcl dot ac dot uk>
parents: 395
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  movw    $0x65,-0x2(%ebp)         ; store e in ebp - 2
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Christian Urban <christian dot urban at kcl dot ac dot uk>
parents: 395
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  movl    $0x34333231,-0x10(%ebp)  ; store 1234 in ebp - 16
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Christian Urban <christian dot urban at kcl dot ac dot uk>
parents: 395
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  movl    $0x38373635,-0xc(%ebp)   ; store 5678 in ebp - 12
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Christian Urban <christian dot urban at kcl dot ac dot uk>
parents: 395
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  movw    $0x39,-0x8(%ebp)         ; store 9    in ebp - 8
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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  leave                            ; pop last sp into ebp
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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  ret                              ; pop return address and
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Christian Urban <christian dot urban at kcl dot ac dot uk>
parents: 395
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                                   ; go back to main
sen-material