/* SPDX-License-Identifier: GPL-2.0-or-later *//* * This file contains miscellaneous low-level functions. *    Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org) * * Largely rewritten by Cort Dougan (cort@cs.nmt.edu) * and Paul Mackerras. * * PPC64 updates by Dave Engebretsen (engebret@us.ibm.com) * * setjmp/longjmp code by Paul Mackerras. */#include <linux/export.h>#include <asm/ppc_asm.h>#include <asm/unistd.h>#include <asm/asm-compat.h>#include <asm/asm-offsets.h> 	.text /* * Returns (address we are running at) - (address we were linked at) * for use before the text and data are mapped to KERNELBASE.  * add_reloc_offset(x) returns x + reloc_offset(). */ _GLOBAL(reloc_offset)	li	r3, 0_GLOBAL(add_reloc_offset)	mflr	r0	bcl	20,31,$+41:	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	32:	PPC_LONG 1b _GLOBAL(setjmp)	mflr	r0	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)	PPC_STL	r14,5*SZL(r3)	PPC_STL	r15,6*SZL(r3)	PPC_STL	r16,7*SZL(r3)	PPC_STL	r17,8*SZL(r3)	PPC_STL	r18,9*SZL(r3)	PPC_STL	r19,10*SZL(r3)	PPC_STL	r20,11*SZL(r3)	PPC_STL	r21,12*SZL(r3)	PPC_STL	r22,13*SZL(r3)	PPC_STL	r23,14*SZL(r3)	PPC_STL	r24,15*SZL(r3)	PPC_STL	r25,16*SZL(r3)	PPC_STL	r26,17*SZL(r3)	PPC_STL	r27,18*SZL(r3)	PPC_STL	r28,19*SZL(r3)	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)#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)	PPC_LL	r17,8*SZL(r3)	PPC_LL	r18,9*SZL(r3)	PPC_LL	r19,10*SZL(r3)	PPC_LL	r20,11*SZL(r3)	PPC_LL	r21,12*SZL(r3)	PPC_LL	r22,13*SZL(r3)	PPC_LL	r23,14*SZL(r3)	PPC_LL	r24,15*SZL(r3)	PPC_LL	r25,16*SZL(r3)	PPC_LL	r26,17*SZL(r3)	PPC_LL	r27,18*SZL(r3)	PPC_LL	r28,19*SZL(r3)	PPC_LL	r29,20*SZL(r3)	PPC_LL	r30,21*SZL(r3)	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	bnelr	li	r3, 1	blr _GLOBAL(current_stack_frame)	PPC_LL	r3,0(r1)	blrEXPORT_SYMBOL(current_stack_frame)