diff options
| author | Christophe Leroy <christophe.leroy@csgroup.eu> | 2021-06-04 16:54:13 +0200 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2021-06-24 16:07:10 +0200 |
| commit | 275dcf24e253f4f5b200bc8cca5eac32a23b08c8 (patch) | |
| tree | 89fab51bae1091fe25cb8407fc0033246f509a41 /arch/powerpc/kernel | |
| parent | powerpc/32: Interchange r10 and r12 in SYSCALL_ENTRY on non booke (diff) | |
| download | linux-275dcf24e253f4f5b200bc8cca5eac32a23b08c8.tar.xz linux-275dcf24e253f4f5b200bc8cca5eac32a23b08c8.zip | |
powerpc/32: Interchange r1 and r11 in SYSCALL_ENTRY on booke
To better match non booke version of SYSCALL_ENTRY macro,
interchange r1 and r11 in the booke version.
While at it, in both versions use r1 instead of r11 to save
_NIP and _CCR.
All other uses of r11 will go away in next patch, so don't
bother changing them for now.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/1684c39724a069b0ce1aa82eaee6ec194e354e4e.1622818435.git.christophe.leroy@csgroup.eu
Diffstat (limited to 'arch/powerpc/kernel')
| -rw-r--r-- | arch/powerpc/kernel/head_32.h | 4 | ||||
| -rw-r--r-- | arch/powerpc/kernel/head_booke.h | 17 |
2 files changed, 11 insertions, 10 deletions
diff --git a/arch/powerpc/kernel/head_32.h b/arch/powerpc/kernel/head_32.h index 1e55bc054659..7ca25eb9bc75 100644 --- a/arch/powerpc/kernel/head_32.h +++ b/arch/powerpc/kernel/head_32.h @@ -158,12 +158,12 @@ _ASM_NOKPROBE_SYMBOL(\name\()_virt) stw r11,GPR1(r1) stw r11,0(r1) mr r11, r1 - stw r12,_NIP(r11) + stw r12,_NIP(r1) mflr r12 stw r12, _LINK(r11) mfcr r12 rlwinm r12,r12,0,4,2 /* Clear SO bit in CR */ - stw r12,_CCR(r11) /* save registers */ + stw r12,_CCR(r1) #ifdef CONFIG_40x rlwinm r9,r9,0,14,12 /* clear MSR_WE (necessary?) */ #endif diff --git a/arch/powerpc/kernel/head_booke.h b/arch/powerpc/kernel/head_booke.h index f82470091697..4a2fad9f225e 100644 --- a/arch/powerpc/kernel/head_booke.h +++ b/arch/powerpc/kernel/head_booke.h @@ -135,17 +135,18 @@ ALT_FTR_SECTION_END_IFSET(CPU_FTR_EMB_HV) #endif mfspr r9, SPRN_SRR1 BOOKE_CLEAR_BTB(r11) - lwz r11, TASK_STACK - THREAD(r10) + mr r11, r1 + lwz r1, TASK_STACK - THREAD(r10) rlwinm r12,r12,0,4,2 /* Clear SO bit in CR */ - ALLOC_STACK_FRAME(r11, THREAD_SIZE - INT_FRAME_SIZE) - stw r12, _CCR(r11) /* save various registers */ + ALLOC_STACK_FRAME(r1, THREAD_SIZE - INT_FRAME_SIZE) + stw r12, _CCR(r1) mflr r12 - stw r12,_LINK(r11) + stw r12,_LINK(r1) mfspr r12,SPRN_SRR0 - stw r1, GPR1(r11) - stw r1, 0(r11) - mr r1, r11 - stw r12,_NIP(r11) + stw r11, GPR1(r1) + stw r11, 0(r1) + mr r11, r1 + stw r12,_NIP(r1) rlwinm r9,r9,0,14,12 /* clear MSR_WE (necessary?) */ lis r12, STACK_FRAME_REGS_MARKER@ha /* exception frame marker */ stw r2,GPR2(r11) |