From 32ceaa6e128556ec67151a16d7c2c04580170db8 Mon Sep 17 00:00:00 2001 From: Christophe Leroy Date: Thu, 13 Dec 2018 08:08:11 +0000 Subject: powerpc/8xx: hide itlbie and dtlbie symbols When disassembling InstructionTLBError we get the following messy code: c000138c: 7d 84 63 78 mr r4,r12 c0001390: 75 25 58 00 andis. r5,r9,22528 c0001394: 75 2a 40 00 andis. r10,r9,16384 c0001398: 41 a2 00 08 beq c00013a0 c000139c: 7c 00 22 64 tlbie r4,r0 c00013a0 : c00013a0: 39 40 04 01 li r10,1025 c00013a4: 91 4b 00 b0 stw r10,176(r11) c00013a8: 39 40 10 32 li r10,4146 c00013ac: 48 00 cc 59 bl c000e004 For a cleaner code dump, this patch replaces itlbie and dtlbie symbols by local symbols. c000138c: 7d 84 63 78 mr r4,r12 c0001390: 75 25 58 00 andis. r5,r9,22528 c0001394: 75 2a 40 00 andis. r10,r9,16384 c0001398: 41 a2 00 08 beq c00013a0 c000139c: 7c 00 22 64 tlbie r4,r0 c00013a0: 39 40 04 01 li r10,1025 c00013a4: 91 4b 00 b0 stw r10,176(r11) c00013a8: 39 40 10 32 li r10,4146 c00013ac: 48 00 cc 59 bl c000e004 Signed-off-by: Christophe Leroy Signed-off-by: Michael Ellerman --- arch/powerpc/kernel/head_8xx.S | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) (limited to 'arch/powerpc/kernel/head_8xx.S') diff --git a/arch/powerpc/kernel/head_8xx.S b/arch/powerpc/kernel/head_8xx.S index 20cc816b3508..67cbae30ebf2 100644 --- a/arch/powerpc/kernel/head_8xx.S +++ b/arch/powerpc/kernel/head_8xx.S @@ -551,11 +551,11 @@ InstructionTLBError: mr r4,r12 andis. r5,r9,DSISR_SRR1_MATCH_32S@h /* Filter relevant SRR1 bits */ andis. r10,r9,SRR1_ISI_NOPT@h - beq+ 1f + beq+ .Litlbie tlbie r4 -itlbie: /* 0x400 is InstructionAccess exception, needed by bad_page_fault() */ -1: EXC_XFER_LITE(0x400, handle_page_fault) +.Litlbie: + EXC_XFER_LITE(0x400, handle_page_fault) /* This is the data TLB error on the MPC8xx. This could be due to * many reasons, including a dirty update to a pte. We bail out to @@ -577,10 +577,10 @@ DARFixed:/* Return from dcbx instruction bug workaround */ stw r5,_DSISR(r11) mfspr r4,SPRN_DAR andis. r10,r5,DSISR_NOHPTE@h - beq+ 1f + beq+ .Ldtlbie tlbie r4 -dtlbie: -1: li r10,RPN_PATTERN +.Ldtlbie: + li r10,RPN_PATTERN mtspr SPRN_DAR,r10 /* Tag DAR, to be used in DTLB Error */ /* 0x300 is DataAccess exception, needed by bad_page_fault() */ EXC_XFER_LITE(0x300, handle_page_fault) @@ -603,8 +603,8 @@ DataBreakpoint: mtspr SPRN_SPRG_SCRATCH1, r11 mfcr r10 mfspr r11, SPRN_SRR0 - cmplwi cr0, r11, (dtlbie - PAGE_OFFSET)@l - cmplwi cr7, r11, (itlbie - PAGE_OFFSET)@l + cmplwi cr0, r11, (.Ldtlbie - PAGE_OFFSET)@l + cmplwi cr7, r11, (.Litlbie - PAGE_OFFSET)@l beq- cr0, 11f beq- cr7, 11f EXCEPTION_PROLOG_1 -- cgit v1.2.3