diff options
Diffstat (limited to 'arch/powerpc/kernel/misc.S')
| -rw-r--r-- | arch/powerpc/kernel/misc.S | 52 |
1 files changed, 24 insertions, 28 deletions
diff --git a/arch/powerpc/kernel/misc.S b/arch/powerpc/kernel/misc.S index 384357cb8bc0..29e1440d14cc 100644 --- a/arch/powerpc/kernel/misc.S +++ b/arch/powerpc/kernel/misc.S @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * This file contains miscellaneous low-level functions. * Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org) @@ -8,49 +9,35 @@ * PPC64 updates by Dave Engebretsen (engebret@us.ibm.com) * * setjmp/longjmp code by Paul Mackerras. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. */ +#include <linux/export.h> #include <asm/ppc_asm.h> #include <asm/unistd.h> #include <asm/asm-compat.h> #include <asm/asm-offsets.h> -#include <asm/export.h> .text /* * Returns (address we are running at) - (address we were linked at) * for use before the text and data are mapped to KERNELBASE. - */ - -_GLOBAL(reloc_offset) - mflr r0 - bl 1f -1: mflr r3 - PPC_LL r4,(2f-1b)(r3) - subf r3,r4,r3 - mtlr r0 - blr - .align 3 -2: PPC_LONG 1b - -/* * add_reloc_offset(x) returns x + reloc_offset(). */ + +_GLOBAL(reloc_offset) + li r3, 0 _GLOBAL(add_reloc_offset) mflr r0 - bl 1f + bcl 20,31,$+4 1: mflr r5 PPC_LL r4,(2f-1b)(r5) subf r5,r4,r5 add r3,r3,r5 mtlr r0 blr +_ASM_NOKPROBE_SYMBOL(reloc_offset) +_ASM_NOKPROBE_SYMBOL(add_reloc_offset) .align 3 2: PPC_LONG 1b @@ -60,6 +47,10 @@ _GLOBAL(setjmp) PPC_STL r0,0(r3) PPC_STL r1,SZL(r3) PPC_STL r2,2*SZL(r3) +#ifdef CONFIG_PPC32 + mfcr r12 + stmw r12, 3*SZL(r3) +#else mfcr r0 PPC_STL r0,3*SZL(r3) PPC_STL r13,4*SZL(r3) @@ -81,14 +72,16 @@ _GLOBAL(setjmp) PPC_STL r29,20*SZL(r3) PPC_STL r30,21*SZL(r3) PPC_STL r31,22*SZL(r3) +#endif li r3,0 blr _GLOBAL(longjmp) - PPC_LCMPI r4,0 - bne 1f - li r4,1 -1: PPC_LL r13,4*SZL(r3) +#ifdef CONFIG_PPC32 + lmw r12, 3*SZL(r3) + mtcrf 0x38, r12 +#else + PPC_LL r13,4*SZL(r3) PPC_LL r14,5*SZL(r3) PPC_LL r15,6*SZL(r3) PPC_LL r16,7*SZL(r3) @@ -109,14 +102,17 @@ _GLOBAL(longjmp) PPC_LL r31,22*SZL(r3) PPC_LL r0,3*SZL(r3) mtcrf 0x38,r0 +#endif PPC_LL r0,0(r3) PPC_LL r1,SZL(r3) PPC_LL r2,2*SZL(r3) mtlr r0 - mr r3,r4 + mr. r3, r4 + bnelr + li r3, 1 blr -_GLOBAL(current_stack_pointer) +_GLOBAL(current_stack_frame) PPC_LL r3,0(r1) blr -EXPORT_SYMBOL(current_stack_pointer) +EXPORT_SYMBOL(current_stack_frame) |