Rev 4872 | Go to most recent revision | Details | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4349 | Serge | 1 | void __mutex_lock(volatile int *val) |
| 2 | { |
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| 3 | int tmp; |
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| 4 | |||
| 5 | __asm__ __volatile__ ( |
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| 6 | "0:\n\t" |
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| 7 | "mov %0, %1\n\t" |
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| 8 | "testl %1, %1\n\t" |
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| 9 | "jz 1f\n\t" |
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| 10 | |||
| 11 | "movl $68, %%eax\n\t" |
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| 12 | "movl $1, %%ebx\n\t" |
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| 13 | "int $0x40\n\t" |
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| 14 | "jmp 0b\n\t" |
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| 15 | "1:\n\t" |
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| 16 | "incl %1\n\t" |
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| 17 | "xchgl %0, %1\n\t" |
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| 18 | "testl %1, %1\n\t" |
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| 19 | "jnz 0b\n" |
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| 20 | : "+m" (*val), "=&r"(tmp) |
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| 21 | ::"eax","ebx" ); |
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| 22 | } |
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| 23 |