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powerpc: Move PPC_HA() PPC_HI() and PPC_LO() to ppc-opcode.h

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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>
This commit is contained in:
Christophe Leroy
2019-05-03 06:40:15 +00:00
committed by Michael Ellerman
parent 2fb0a2c989
commit 7f9c929a7f
3 changed files with 9 additions and 11 deletions
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9
arch/powerpc/include/asm/ppc-opcode.h
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@@ -412,6 +412,15 @@
#define __PPC_SPR(r) ((((r) & 0x1f) << 16) | ((((r) >> 5) & 0x1f) << 11))
#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.