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55 | /* [CS]PRS manipulation macros */ |
55 | /* [CS]PRS manipulation macros */ |
56 | #define GEN_STATUS_READ(nm,reg) \ |
56 | #define GEN_STATUS_READ(nm,reg) \ |
57 | static inline uint32_t nm## _status_reg_read(void) \ |
57 | static inline uint32_t nm## _status_reg_read(void) \ |
58 | { \ |
58 | { \ |
59 | uint32_t retval; \ |
59 | uint32_t retval; \ |
- | 60 | asm volatile( \ |
|
- | 61 | "mrs %[retval], " #reg \ |
|
60 | asm volatile("mrs %0, " #reg : "=r" (retval)); \ |
62 | : [retval] "=r" (retval) \ |
- | 63 | ); \ |
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61 | return retval; \ |
64 | return retval; \ |
62 | } |
65 | } |
63 | 66 | ||
64 | #define GEN_STATUS_WRITE(nm,reg,fieldname, field) \ |
67 | #define GEN_STATUS_WRITE(nm,reg,fieldname, field) \ |
65 | static inline void nm## _status_reg_ ##fieldname## _write(uint32_t value) \ |
68 | static inline void nm## _status_reg_ ##fieldname## _write(uint32_t value) \ |
66 | { \ |
69 | { \ |
- | 70 | asm volatile( \ |
|
67 | asm volatile("msr " #reg "_" #field ", %0" : : "r" (value)); \ |
71 | "msr " #reg "_" #field ", %[value]" \ |
- | 72 | :: [value] "r" (value) \ |
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- | 73 | ); \ |
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68 | } |
74 | } |
69 | 75 | ||
70 | 76 | ||
71 | /** Returns the value of CPSR (Current Program Status Register). */ |
77 | /** Returns the value of CPSR (Current Program Status Register). */ |
72 | GEN_STATUS_READ(current, cpsr) |
78 | GEN_STATUS_READ(current, cpsr) |