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Last change
on this file since 25 was 2, checked in by Mattia Monga, 13 years ago |
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Importazione sorgenti
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File size:
451 bytes
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| 1 | section .text
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| 2 | global enter_section
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| 3 | extern printf
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| 4 |
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| 5 | enter_section:
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| 6 | enter 0, 0 ; 0 bytes of local stack space
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| 7 | mov ebx,[ebp+8] ; first parameter to function
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| 8 |
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| 9 |
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| 10 | spin: mov ecx, 0
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| 11 | lock bts dword [ebx], 0
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| 12 | jc save
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| 13 | print: push busy
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| 14 | call printf
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| 15 |
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| 16 | cmp ecx, 1
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| 17 | je spin
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| 18 |
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| 19 | save: mov ecx, 1
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| 20 | jmp print
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| 21 |
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| 22 | leave ; mov esp,ebp / pop ebp
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| 23 | ret
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| 24 |
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| 25 | section .rodata
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| 26 | busy: db "Busy waiting!",10,0
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