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Line 38... | Line 38... | ||
38 | * value of EE. |
38 | * value of EE. |
39 | */ |
39 | */ |
40 | static inline pri_t cpu_priority_low(void) { |
40 | static inline pri_t cpu_priority_low(void) { |
41 | pri_t v; |
41 | pri_t v; |
42 | __asm__ volatile ( |
42 | __asm__ volatile ( |
43 | "\n" |
43 | "mfmsr %0\n" |
- | 44 | "mfmsr %%r31\n" |
|
- | 45 | "ori %%r31, %%r31, 1 << 15\n" |
|
- | 46 | "mtmsr %%r31\n" |
|
44 | : "=r" (v) |
47 | : "=r" (v) |
- | 48 | : |
|
- | 49 | : "%r31" |
|
45 | ); |
50 | ); |
46 | return v; |
51 | return v; |
47 | } |
52 | } |
48 | 53 | ||
49 | /** Set priority level high |
54 | /** Set priority level high |
Line 52... | Line 57... | ||
52 | * value of EE. |
57 | * value of EE. |
53 | */ |
58 | */ |
54 | static inline pri_t cpu_priority_high(void) { |
59 | static inline pri_t cpu_priority_high(void) { |
55 | pri_t v; |
60 | pri_t v; |
56 | __asm__ volatile ( |
61 | __asm__ volatile ( |
57 | "\n" |
62 | "mfmsr %0\n" |
- | 63 | "mfmsr %%r31\n" |
|
- | 64 | "rlwinm %%r31, %%r31, 0, 17, 15\n" |
|
- | 65 | "mtmsr %%r31\n" |
|
58 | : "=r" (v) |
66 | : "=r" (v) |
- | 67 | : |
|
- | 68 | : "%r31" |
|
59 | ); |
69 | ); |
60 | return v; |
70 | return v; |
61 | } |
71 | } |
62 | 72 | ||
63 | /** Restore priority level |
73 | /** Restore priority level |
64 | * |
74 | * |
65 | * Restore EE. |
75 | * Restore EE. |
66 | */ |
76 | */ |
67 | static inline void cpu_priority_restore(pri_t pri) { |
77 | static inline void cpu_priority_restore(pri_t pri) { |
68 | __asm__ volatile ( |
78 | __asm__ volatile ( |
- | 79 | "mfmsr %%r31\n" |
|
- | 80 | "rlwimi %0, %%r31, 0, 17, 15\n" |
|
69 | "\n" |
81 | "mtmsr %0\n" |
70 | : : "r" (pri) |
82 | : "=r" (pri) |
- | 83 | : "0" (pri) |
|
- | 84 | : "%r31" |
|
71 | ); |
85 | ); |
72 | } |
86 | } |
73 | 87 | ||
74 | /* TODO: implement the real stuff */ |
88 | /* TODO: implement the real stuff */ |
75 | static inline __address get_stack_base(void) |
89 | static inline __address get_stack_base(void) |