source:
trunk/enter2.asm@
26
Last change on this file since 26 was 26, checked in by , 10 years ago | |
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File size: 372 bytes |
Rev | Line | |
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[2] | 1 | section .text |
2 | global enter_section | |
3 | extern printf | |
4 | ||
5 | enter_section: | |
6 | enter 0, 0 ; 0 bytes of local stack space | |
7 | mov ebx,[ebp+8] ; first parameter to function | |
8 | ||
9 | ||
[26] | 10 | spin: push busy |
11 | call printf | |
[2] | 12 | lock bts dword [ebx], 0 |
[26] | 13 | jc spin |
[2] | 14 | |
15 | leave ; mov esp,ebp / pop ebp | |
16 | ret | |
17 | ||
18 | section .rodata | |
[26] | 19 | busy: db "Busy waiting!",10,0 |
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