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| author | Christophe Leroy <christophe.leroy@c-s.fr> | 2019-05-03 06:40:15 +0000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2019-07-06 00:29:50 +1000 |
| commit | 7f9c929a7ff203eae60b4225bb6824c3eb31796c (patch) | |
| tree | 074abff01828d66e8b39a7d9592a10c5967235d5 /arch/powerpc/include/asm/ppc-opcode.h | |
| parent | 2fb0a2c989837c976b68233496bbaefb47cd3d6f (diff) | |
| download | linux-7f9c929a7ff203eae60b4225bb6824c3eb31796c.tar.bz2 | |
powerpc: Move PPC_HA() PPC_HI() and PPC_LO() to ppc-opcode.h
PPC_HA() PPC_HI() and PPC_LO() macros are nice macros. Move them
from module64.c to ppc-opcode.h in order to use them in other places.
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
[mpe: Clean up formatting in new code, drop duplicates in ftrace.c]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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. */ |