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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1693 | serge | 1 | /* default reentrant pointer when multithread enabled */ |
| 2 | |||
| 3 | #include <_ansi.h> |
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| 4 | #include |
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| 5 | #include |
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| 6 | |||
| 7 | static inline |
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| 8 | void *user_alloc(int size) |
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| 9 | { |
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| 10 | void *val; |
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| 11 | __asm__ __volatile__( |
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| 12 | "int $0x40" |
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| 13 | :"=eax"(val) |
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| 14 | :"a"(68),"b"(12),"c"(size)); |
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| 15 | return val; |
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| 16 | } |
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| 17 | |||
| 18 | void init_reent() |
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| 19 | { |
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| 20 | struct _reent *ent; |
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| 21 | |||
| 22 | ent = user_alloc(sizeof(struct _reent)); |
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| 23 | |||
| 24 | _REENT_INIT_PTR(ent); |
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| 25 | |||
| 26 | __asm__ __volatile__( |
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| 1906 | serge | 27 | "movl %0, %%fs:12" |
| 1693 | serge | 28 | ::"r"(ent)); |
| 29 | __sinit(ent); |
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| 30 | } |
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| 31 | |||
| 32 | |||
| 33 | |||
| 34 | void __mutex_lock(volatile int *val) |
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| 35 | { |
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| 36 | int tmp; |
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| 37 | |||
| 38 | __asm__ __volatile__ ( |
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| 39 | "0:\n\t" |
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| 40 | "mov %0, %1\n\t" |
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| 41 | "testl %1, %1\n\t" |
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| 42 | "jz 1f\n\t" |
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| 43 | |||
| 44 | "movl $68, %%eax\n\t" |
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| 45 | "movl $1, %%ebx\n\t" |
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| 46 | "int $0x40\n\t" |
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| 47 | "jmp 0b\n\t" |
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| 48 | "1:\n\t" |
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| 49 | "incl %1\n\t" |
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| 50 | "xchgl %0, %1\n\t" |
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| 51 | "testl %1, %1\n\t" |
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| 52 | "jnz 0b\n" |
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| 53 | : "+m" (*val), "=&r"(tmp) |
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| 54 | ::"eax","ebx" ); |
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| 55 | } |