diff options
| author | Christophe Leroy <christophe.leroy@c-s.fr> | 2019-12-21 08:32:23 +0000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-01-26 22:15:08 +1100 |
| commit | 1f1c4d0122eebd204468684f21f0270ea8a4999d (patch) | |
| tree | 9360be5fb9a51f8e25f9dd61f28f68be82c29ddb /arch/powerpc/kernel/head_32.h | |
| parent | 39bccfd164970557c5cfc60b2db029f70542549f (diff) | |
powerpc/32: Add EXCEPTION_PROLOG_0 in head_32.h
This patch creates a macro for the very first part of
exception prolog, this will help when implementing
CONFIG_VMAP_STACK
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/2249fe62f481121a180e9655ad2b998093f318f3.1576916812.git.christophe.leroy@c-s.fr
Diffstat (limited to 'arch/powerpc/kernel/head_32.h')
| -rw-r--r-- | arch/powerpc/kernel/head_32.h | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/arch/powerpc/kernel/head_32.h b/arch/powerpc/kernel/head_32.h index b2ca8c9ffd8b..8e345f8d4b0e 100644 --- a/arch/powerpc/kernel/head_32.h +++ b/arch/powerpc/kernel/head_32.h @@ -10,13 +10,16 @@ * We assume sprg3 has the physical address of the current * task's thread_struct. */ - .macro EXCEPTION_PROLOG + EXCEPTION_PROLOG_0 + EXCEPTION_PROLOG_1 + EXCEPTION_PROLOG_2 +.endm + +.macro EXCEPTION_PROLOG_0 mtspr SPRN_SPRG_SCRATCH0,r10 mtspr SPRN_SPRG_SCRATCH1,r11 mfcr r10 - EXCEPTION_PROLOG_1 - EXCEPTION_PROLOG_2 .endm .macro EXCEPTION_PROLOG_1 |