diff options
Diffstat (limited to 'arch/powerpc/include/asm/ppc-opcode.h')
| -rw-r--r-- | arch/powerpc/include/asm/ppc-opcode.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/ppc-opcode.h b/arch/powerpc/include/asm/ppc-opcode.h index 971bdf84f6fc..f544432aef82 100644 --- a/arch/powerpc/include/asm/ppc-opcode.h +++ b/arch/powerpc/include/asm/ppc-opcode.h @@ -413,6 +413,15 @@ #define __PPC_RC21 (0x1 << 10) /* + * Both low and high 16 bits are added as SIGNED additions, so if low 16 bits + * has high bit set, high 16 bits must be adjusted. These macros do that (stolen + * from binutils). + */ +#define PPC_LO(v) ((v) & 0xffff) +#define PPC_HI(v) (((v) >> 16) & 0xffff) +#define PPC_HA(v) PPC_HI((v) + 0x8000) + +/* * Only use the larx hint bit on 64bit CPUs. e500v1/v2 based CPUs will treat a * larx with EH set as an illegal instruction. */ |