diff options
| author | Christophe Leroy <christophe.leroy@csgroup.eu> | 2021-03-12 12:50:39 +0000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2021-03-29 13:22:09 +1100 |
| commit | bce4c26a4e324cb096a3768cdc3aad4e2552c3d0 (patch) | |
| tree | e88c3697f108385b6e7b6b8b1d2cb465db3fcb9a /arch/powerpc/kernel | |
| parent | 719e7e212c7e637a795f130dbdd5db6c291e463f (diff) | |
powerpc/32: Add a prepare_transfer_to_handler macro for exception prologs
In order to increase flexibility, add a macro that will for now
call transfer_to_handler.
As transfer_to_handler doesn't do the actual transfer anymore,
also name it prepare_transfer_to_handler. The following patches
will progressively remove the use of transfer_to_handler label.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/7f757c52518ab1d7b27ad5113b10f860e803f467.1615552867.git.christophe.leroy@csgroup.eu
Diffstat (limited to 'arch/powerpc/kernel')
| -rw-r--r-- | arch/powerpc/kernel/entry_32.S | 3 | ||||
| -rw-r--r-- | arch/powerpc/kernel/head_32.h | 4 | ||||
| -rw-r--r-- | arch/powerpc/kernel/head_booke.h | 4 |
3 files changed, 11 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/entry_32.S b/arch/powerpc/kernel/entry_32.S index 76e1502b3e6f..237b753720db 100644 --- a/arch/powerpc/kernel/entry_32.S +++ b/arch/powerpc/kernel/entry_32.S @@ -86,6 +86,8 @@ _ASM_NOKPROBE_SYMBOL(transfer_to_handler_full) .globl transfer_to_handler transfer_to_handler: + .globl prepare_transfer_to_handler +prepare_transfer_to_handler: SAVE_NVGPRS(r11) addi r3,r1,STACK_FRAME_OVERHEAD stw r2,GPR2(r11) @@ -133,6 +135,7 @@ transfer_to_handler_cont: lwz r2, GPR2(r11) b fast_exception_return #endif +_ASM_NOKPROBE_SYMBOL(prepare_transfer_to_handler) _ASM_NOKPROBE_SYMBOL(transfer_to_handler) _ASM_NOKPROBE_SYMBOL(transfer_to_handler_cont) diff --git a/arch/powerpc/kernel/head_32.h b/arch/powerpc/kernel/head_32.h index bf4c288173ad..3ab0f3ad9a6a 100644 --- a/arch/powerpc/kernel/head_32.h +++ b/arch/powerpc/kernel/head_32.h @@ -115,6 +115,10 @@ _ASM_NOKPROBE_SYMBOL(\name\()_virt) .endm +.macro prepare_transfer_to_handler + bl prepare_transfer_to_handler +.endm + .macro SYSCALL_ENTRY trapno mfspr r9, SPRN_SRR1 mfspr r10, SPRN_SRR0 diff --git a/arch/powerpc/kernel/head_booke.h b/arch/powerpc/kernel/head_booke.h index 27a7358c04bb..0f02b970e797 100644 --- a/arch/powerpc/kernel/head_booke.h +++ b/arch/powerpc/kernel/head_booke.h @@ -87,6 +87,10 @@ END_BTB_FLUSH_SECTION SAVE_4GPRS(3, r11); \ SAVE_2GPRS(7, r11) +.macro prepare_transfer_to_handler + bl prepare_transfer_to_handler +.endm + .macro SYSCALL_ENTRY trapno intno srr1 mfspr r10, SPRN_SPRG_THREAD #ifdef CONFIG_KVM_BOOKE_HV |