Rev 1906 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1693 | serge | 1 | /* default reentrant pointer when multithread enabled */ |
| 2 | |||
| 3 | #include <_ansi.h> |
||
| 4 | #include |
||
| 5 | #include |
||
| 6 | |||
| 7 | static inline |
||
| 8 | void *user_alloc(int size) |
||
| 9 | { |
||
| 10 | void *val; |
||
| 11 | __asm__ __volatile__( |
||
| 12 | "int $0x40" |
||
| 13 | :"=eax"(val) |
||
| 14 | :"a"(68),"b"(12),"c"(size)); |
||
| 15 | return val; |
||
| 16 | } |
||
| 17 | |||
| 18 | void init_reent() |
||
| 19 | { |
||
| 20 | struct _reent *ent; |
||
| 21 | |||
| 22 | ent = user_alloc(sizeof(struct _reent)); |
||
| 23 | |||
| 24 | _REENT_INIT_PTR(ent); |
||
| 25 | |||
| 26 | __asm__ __volatile__( |
||
| 1906 | serge | 27 | "movl %0, %%fs:12" |
| 1693 | serge | 28 | ::"r"(ent)); |
| 29 | __sinit(ent); |
||
| 30 | } |
||
| 31 | |||
| 3065 | serge | 32 | void init_global_reent() |
| 33 | { |
||
| 34 | struct _reent *ent; |
||
| 1693 | serge | 35 | |
| 3065 | serge | 36 | ent =_GLOBAL_REENT; |
| 1693 | serge | 37 | |
| 3065 | serge | 38 | _REENT_INIT_PTR(ent); |
| 39 | |||
| 40 | __asm__ __volatile__( |
||
| 41 | "movl %0, %%fs:12" |
||
| 42 | ::"r"(ent)); |
||
| 43 | __sinit(ent); |
||
| 44 | } |
||
| 45 | |||
| 46 | |||
| 1693 | serge | 47 | void __mutex_lock(volatile int *val) |
| 48 | { |
||
| 49 | int tmp; |
||
| 50 | |||
| 51 | __asm__ __volatile__ ( |
||
| 52 | "0:\n\t" |
||
| 53 | "mov %0, %1\n\t" |
||
| 54 | "testl %1, %1\n\t" |
||
| 55 | "jz 1f\n\t" |
||
| 56 | |||
| 57 | "movl $68, %%eax\n\t" |
||
| 58 | "movl $1, %%ebx\n\t" |
||
| 59 | "int $0x40\n\t" |
||
| 60 | "jmp 0b\n\t" |
||
| 61 | "1:\n\t" |
||
| 62 | "incl %1\n\t" |
||
| 63 | "xchgl %0, %1\n\t" |
||
| 64 | "testl %1, %1\n\t" |
||
| 65 | "jnz 0b\n" |
||
| 66 | : "+m" (*val), "=&r"(tmp) |
||
| 67 | ::"eax","ebx" ); |
||
| 68 | } |