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| author |   Christophe Leroy <christophe.leroy@csgroup.eu> | 2021-02-09 19:29:28 +0000 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2021-02-11 23:35:12 +1100 |
| commit | d524dda719f06967db4d3ba519edf9267f84c155 (patch) | |
| tree | 91120a551f132ba10a5a711b2a01bc452d7380af /arch/powerpc/include/asm/reg_booke.h | |
| parent | powerpc/syscall: Do not check unsupported scv vector on PPC32 (diff) | |
| download | linux-dev-d524dda719f06967db4d3ba519edf9267f84c155.tar.xz linux-dev-d524dda719f06967db4d3ba519edf9267f84c155.zip | |
powerpc/32: Handle bookE debugging in C in syscall entry/exit
The handling of SPRN_DBCR0 and other registers can easily
be done in C instead of ASM.
For that, create booke_load_dbcr0() and booke_restore_dbcr0().
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/1a7515f9258b27a9177de88491a8bb79b255ceb7.1612898425.git.christophe.leroy@csgroup.eu
Diffstat (limited to 'arch/powerpc/include/asm/reg_booke.h')
| -rw-r--r-- | arch/powerpc/include/asm/reg_booke.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/reg_booke.h b/arch/powerpc/include/asm/reg_booke.h index 262782f08fd4..17b8dcd9a40d 100644 --- a/arch/powerpc/include/asm/reg_booke.h +++ b/arch/powerpc/include/asm/reg_booke.h @@ -691,6 +691,9 @@ #define mttmr(rn, v) asm volatile(MTTMR(rn, %0) : \ : "r" ((unsigned long)(v)) \ : "memory") + +extern unsigned long global_dbcr0[]; + #endif /* !__ASSEMBLY__ */ #endif /* __ASM_POWERPC_REG_BOOKE_H__ */ |