diff options
Diffstat (limited to 'arch/powerpc/boot/reg.h')
| -rw-r--r-- | arch/powerpc/boot/reg.h | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/arch/powerpc/boot/reg.h b/arch/powerpc/boot/reg.h new file mode 100644 index 00000000..9c2c9978 --- /dev/null +++ b/arch/powerpc/boot/reg.h @@ -0,0 +1,30 @@ +#ifndef _PPC_BOOT_REG_H +#define _PPC_BOOT_REG_H +/* + * Copyright 2007 Davud Gibson, IBM Corporation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + +static inline u32 mfpvr(void) +{ + u32 pvr; + asm volatile ("mfpvr %0" : "=r"(pvr)); + return pvr; +} + +#define __stringify_1(x) #x +#define __stringify(x) __stringify_1(x) + +#define mfspr(rn) ({unsigned long rval; \ + asm volatile("mfspr %0," __stringify(rn) \ + : "=r" (rval)); rval; }) +#define mtspr(rn, v) asm volatile("mtspr " __stringify(rn) ",%0" : : "r" (v)) + +register void *__stack_pointer asm("r1"); +#define get_sp() (__stack_pointer) + +#endif /* _PPC_BOOT_REG_H */ |