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| 52 | 52 | ||
| 53 | static inline void cpu_sleep(void) { __asm__ volatile ("hlt\n"); }; |
53 | static inline void cpu_sleep(void) { __asm__ volatile ("hlt\n"); }; |
| 54 | static inline void cpu_halt(void) { __asm__ volatile ("hlt\n"); }; |
54 | static inline void cpu_halt(void) { __asm__ volatile ("hlt\n"); }; |
| 55 | 55 | ||
| 56 | 56 | ||
| 57 | static inline __u8 inb(__u16 port) |
57 | /** Byte from port |
| 58 | { |
58 | * |
| 59 | __u8 out; |
59 | * Get byte from port |
| 60 | 60 | * |
|
| 61 | __asm__ volatile ( |
61 | * @param port Port to read from |
| 62 | "mov %1, %%dx\n" |
- | |
| 63 | "inb %%dx,%%al\n" |
- | |
| 64 | "mov %%al, %0\n" |
- | |
| 65 | :"=m"(out) |
- | |
| 66 | :"m"(port) |
- | |
| 67 | :"%rdx","%rax" |
- | |
| 68 | ); |
- | |
| 69 | return out; |
62 | * @return Value read |
| 70 | } |
63 | */ |
| - | 64 | static inline __u8 inb(__u16 port) { __u8 val; __asm__ volatile ("inb %w1, %b0 \n" : "=a" (val) : "d" (port) ); return val; } |
|
| 71 | 65 | ||
| 72 | static inline __u8 outb(__u16 port,__u8 b) |
66 | /** Byte to port |
| 73 | { |
67 | * |
| 74 | __asm__ volatile ( |
- | |
| 75 | "mov %0,%%dx\n" |
- | |
| 76 | "mov %1,%%al\n" |
- | |
| 77 | "outb %%al,%%dx\n" |
68 | * Output byte to port |
| 78 | : |
69 | * |
| 79 | :"m"( port), "m" (b) |
70 | * @param port Port to write to |
| 80 | :"%rdx","%rax" |
71 | * @param val Value to write |
| 81 | ); |
72 | */ |
| 82 | } |
- | |
| - | 73 | static inline void outb(__u16 port, __u8 val) { __asm__ volatile ("outb %b0, %w1\n" : : "a" (val), "d" (port) ); } |
|
| 83 | 74 | ||
| 84 | /** Enable interrupts. |
75 | /** Enable interrupts. |
| 85 | * |
76 | * |
| 86 | * Enable interrupts and return previous |
77 | * Enable interrupts and return previous |
| 87 | * value of EFLAGS. |
78 | * value of EFLAGS. |