LXR linux/arch/ia64/include/asm/sections.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef _ASM_IA64_SECTIONS_H
   3#define _ASM_IA64_SECTIONS_H
   4
   5/*
   6 * Copyright (C) 1998-2003 Hewlett-Packard Co
   7 *      David Mosberger-Tang <davidm@hpl.hp.com>
   8 */
   9
  10#include <linux/elf.h>
  11#include <linux/uaccess.h>
  12#include <asm-generic/sections.h>
  13
  14extern char __phys_per_cpu_start[];
  15#ifdef  CONFIG_SMP
  16extern char __cpu0_per_cpu[];
  17#endif
  18extern char __start___vtop_patchlist[], __end___vtop_patchlist[];
  19extern char __start___rse_patchlist[], __end___rse_patchlist[];
  20extern char __start___mckinley_e9_bundles[], __end___mckinley_e9_bundles[];
  21extern char __start___phys_stack_reg_patchlist[], __end___phys_stack_reg_patchlist[];
  22extern char __start_gate_section[];
  23extern char __start_gate_mckinley_e9_patchlist[], __end_gate_mckinley_e9_patchlist[];
  24extern char __start_gate_vtop_patchlist[], __end_gate_vtop_patchlist[];
  25extern char __start_gate_fsyscall_patchlist[], __end_gate_fsyscall_patchlist[];
  26extern char __start_gate_brl_fsys_bubble_down_patchlist[], __end_gate_brl_fsys_bubble_down_patchlist[];
  27extern char __start_unwind[], __end_unwind[];
  28extern char __start_ivt_text[], __end_ivt_text[];
  29
  30#define HAVE_DEREFERENCE_FUNCTION_DESCRIPTOR 1
  31
  32#undef dereference_function_descriptor
  33static inline void *dereference_function_descriptor(void *ptr)
  34{
  35        struct fdesc *desc = ptr;
  36        void *p;
  37
  38        if (!probe_kernel_address(&desc->ip, p))
  39                ptr = p;
  40        return ptr;
  41}
  42
  43#undef dereference_kernel_function_descriptor
  44static inline void *dereference_kernel_function_descriptor(void *ptr)
  45{
  46        if (ptr < (void *)__start_opd || ptr >= (void *)__end_opd)
  47                return ptr;
  48        return dereference_function_descriptor(ptr);
  49}
  50
  51#endif /* _ASM_IA64_SECTIONS_H */
  52