Rev 3022 | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed
| Rev 3022 | Rev 4055 | ||
|---|---|---|---|
| Line 57... | Line 57... | ||
| 57 | long tmp, v; |
57 | long tmp, v; |
| 58 | 58 | ||
| 59 | asm volatile ( |
59 | asm volatile ( |
| 60 | "1:\n" |
60 | "1:\n" |
| 61 | " ll %0, %1\n" |
61 | " ll %0, %1\n" |
| 62 | " addiu %0, %0, %3\n" /* same as addi, but never traps on overflow */ |
62 | " addu %0, %0, %3\n" /* same as add, but never traps on overflow */ |
| 63 | " move %2, %0\n" |
63 | " move %2, %0\n" |
| 64 | " sc %0, %1\n" |
64 | " sc %0, %1\n" |
| 65 | " beq %0, %4, 1b\n" /* if the atomic operation failed, try again */ |
65 | " beq %0, %4, 1b\n" /* if the atomic operation failed, try again */ |
| 66 | /* nop */ /* nop is inserted automatically by compiler */ |
66 | /* nop */ /* nop is inserted automatically by compiler */ |
| - | 67 | " nop\n" |
|
| 67 | : "=r" (tmp), "=m" (val->count), "=r" (v) |
68 | : "=&r" (tmp), "+m" (val->count), "=&r" (v) |
| 68 | : "i" (i), "i" (0) |
69 | : "r" (i), "i" (0) |
| 69 | ); |
70 | ); |
| 70 | 71 | ||
| 71 | return v; |
72 | return v; |
| 72 | } |
73 | } |
| 73 | 74 | ||