arch/ia64/include/asm/patch.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _ASM_IA64_PATCH_H
   3 #define _ASM_IA64_PATCH_H
   4
   5 /*
   6  * Copyright (C) 2003 Hewlett-Packard Co
   7  *      David Mosberger-Tang <davidm@hpl.hp.com>
   8  *
   9  * There are a number of reasons for patching instructions.  Rather than duplicating code
  10  * all over the place, we put the common stuff here.  Reasons for patching: in-kernel
  11  * module-loader, virtual-to-physical patch-list, McKinley Errata 9 workaround, and gate
  12  * shared library.  Undoubtedly, some of these reasons will disappear and others will
  13  * be added over time.
  14  */
  15 #include <linux/elf.h>
  16 #include <linux/types.h>
  17
  18 extern void ia64_patch (u64 insn_addr, u64 mask, u64 val);      /* patch any insn slot */
  19 extern void ia64_patch_imm64 (u64 insn_addr, u64 val);          /* patch "movl" w/abs. value*/
  20 extern void ia64_patch_imm60 (u64 insn_addr, u64 val);          /* patch "brl" w/ip-rel value */
  21
  22 extern void ia64_patch_mckinley_e9 (unsigned long start, unsigned long end);
  23 extern void ia64_patch_vtop (unsigned long start, unsigned long end);
  24 extern void ia64_patch_phys_stack_reg(unsigned long val);
  25 extern void ia64_patch_rse (unsigned long start, unsigned long end);
  26 extern void ia64_patch_gate (void);
  27
  28 #endif /* _ASM_IA64_PATCH_H */