| xj | b04a402 | 2021-11-25 15:01:52 +0800 | [diff] [blame^] | 1 | #ifndef _PPC_BOOT_REG_H |
| 2 | #define _PPC_BOOT_REG_H |
| 3 | /* |
| 4 | * Copyright 2007 Davud Gibson, IBM Corporation. |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU General Public License |
| 8 | * as published by the Free Software Foundation; either version |
| 9 | * 2 of the License, or (at your option) any later version. |
| 10 | */ |
| 11 | |
| 12 | static inline u32 mfpvr(void) |
| 13 | { |
| 14 | u32 pvr; |
| 15 | asm volatile ("mfpvr %0" : "=r"(pvr)); |
| 16 | return pvr; |
| 17 | } |
| 18 | |
| 19 | #define __stringify_1(x) #x |
| 20 | #define __stringify(x) __stringify_1(x) |
| 21 | |
| 22 | #define mfspr(rn) ({unsigned long rval; \ |
| 23 | asm volatile("mfspr %0," __stringify(rn) \ |
| 24 | : "=r" (rval)); rval; }) |
| 25 | #define mtspr(rn, v) asm volatile("mtspr " __stringify(rn) ",%0" : : "r" (v)) |
| 26 | |
| 27 | register void *__stack_pointer asm("r1"); |
| 28 | #define get_sp() (__stack_pointer) |
| 29 | |
| 30 | #endif /* _PPC_BOOT_REG_H */ |