diff options
Diffstat (limited to 'arch/powerpc/kernel/head_32.h')
| -rw-r--r-- | arch/powerpc/kernel/head_32.h | 41 |
1 files changed, 11 insertions, 30 deletions
diff --git a/arch/powerpc/kernel/head_32.h b/arch/powerpc/kernel/head_32.h index a8221ddcbd66..6b1ec9e3541b 100644 --- a/arch/powerpc/kernel/head_32.h +++ b/arch/powerpc/kernel/head_32.h @@ -142,42 +142,23 @@ _ASM_NOKPROBE_SYMBOL(\name\()_virt) .macro SYSCALL_ENTRY trapno mfspr r9, SPRN_SRR1 - mfspr r10, SPRN_SRR0 + mfspr r12, SPRN_SRR0 LOAD_REG_IMMEDIATE(r11, MSR_KERNEL) /* can take exceptions */ - lis r12, 1f@h - ori r12, r12, 1f@l + lis r10, 1f@h + ori r10, r10, 1f@l mtspr SPRN_SRR1, r11 - mtspr SPRN_SRR0, r12 - mfspr r12,SPRN_SPRG_THREAD + mtspr SPRN_SRR0, r10 + mfspr r10,SPRN_SPRG_THREAD mr r11, r1 - lwz r1,TASK_STACK-THREAD(r12) - tovirt(r12, r12) + lwz r1,TASK_STACK-THREAD(r10) + tovirt(r10, r10) addi r1, r1, THREAD_SIZE - INT_FRAME_SIZE rfi 1: - stw r11,GPR1(r1) - stw r11,0(r1) - mr r11, r1 - stw r10,_NIP(r11) - mflr r10 - stw r10, _LINK(r11) - mfcr r10 - rlwinm r10,r10,0,4,2 /* Clear SO bit in CR */ - stw r10,_CCR(r11) /* save registers */ -#ifdef CONFIG_40x - rlwinm r9,r9,0,14,12 /* clear MSR_WE (necessary?) */ -#endif - lis r10,STACK_FRAME_REGS_MARKER@ha /* exception frame marker */ - stw r2,GPR2(r11) - addi r10,r10,STACK_FRAME_REGS_MARKER@l - stw r9,_MSR(r11) - li r2, \trapno - stw r10,8(r11) - stw r2,_TRAP(r11) - SAVE_GPR(0, r11) - SAVE_4GPRS(3, r11) - SAVE_2GPRS(7, r11) - addi r2,r12,-THREAD + stw r12,_NIP(r1) + mfcr r12 + rlwinm r12,r12,0,4,2 /* Clear SO bit in CR */ + stw r12,_CCR(r1) b transfer_to_syscall /* jump to handler */ .endm |