1/* 2 * This file contains miscellaneous low-level functions. 3 * Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org) 4 * 5 * Largely rewritten by Cort Dougan (cort@cs.nmt.edu) 6 * and Paul Mackerras. 7 * 8 * Adapted for iSeries by Mike Corrigan (mikejc@us.ibm.com) 9 * PPC64 updates by Dave Engebretsen (engebret@us.ibm.com) 10 * 11 * This program is free software; you can redistribute it and/or 12 * modify it under the terms of the GNU General Public License 13 * as published by the Free Software Foundation; either version 14 * 2 of the License, or (at your option) any later version. 15 */ 16#include <asm/ppc_asm.h> 17 18 .text 19 20/* 21 * Returns (address we are running at) - (address we were linked at) 22 * for use before the text and data are mapped to KERNELBASE. 23 */ 24 25_GLOBAL(reloc_offset) 26 mflr r0 27 bl 1f 281: mflr r3 29 LOAD_REG_IMMEDIATE(r4,1b) 30 subf r3,r4,r3 31 mtlr r0 32 blr 33 34/* 35 * add_reloc_offset(x) returns x + reloc_offset(). 36 */ 37_GLOBAL(add_reloc_offset) 38 mflr r0 39 bl 1f 401: mflr r5 41 LOAD_REG_IMMEDIATE(r4,1b) 42 subf r5,r4,r5 43 add r3,r3,r5 44 mtlr r0 45 blr 46