1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */
2*4882a593Smuzhiyun #ifndef _ASM_IA64_SECTIONS_H
3*4882a593Smuzhiyun #define _ASM_IA64_SECTIONS_H
4*4882a593Smuzhiyun
5*4882a593Smuzhiyun /*
6*4882a593Smuzhiyun * Copyright (C) 1998-2003 Hewlett-Packard Co
7*4882a593Smuzhiyun * David Mosberger-Tang <davidm@hpl.hp.com>
8*4882a593Smuzhiyun */
9*4882a593Smuzhiyun
10*4882a593Smuzhiyun #include <linux/elf.h>
11*4882a593Smuzhiyun #include <linux/uaccess.h>
12*4882a593Smuzhiyun #include <asm-generic/sections.h>
13*4882a593Smuzhiyun
14*4882a593Smuzhiyun extern char __phys_per_cpu_start[];
15*4882a593Smuzhiyun #ifdef CONFIG_SMP
16*4882a593Smuzhiyun extern char __cpu0_per_cpu[];
17*4882a593Smuzhiyun #endif
18*4882a593Smuzhiyun extern char __start___vtop_patchlist[], __end___vtop_patchlist[];
19*4882a593Smuzhiyun extern char __start___rse_patchlist[], __end___rse_patchlist[];
20*4882a593Smuzhiyun extern char __start___mckinley_e9_bundles[], __end___mckinley_e9_bundles[];
21*4882a593Smuzhiyun extern char __start___phys_stack_reg_patchlist[], __end___phys_stack_reg_patchlist[];
22*4882a593Smuzhiyun extern char __start_gate_section[];
23*4882a593Smuzhiyun extern char __start_gate_mckinley_e9_patchlist[], __end_gate_mckinley_e9_patchlist[];
24*4882a593Smuzhiyun extern char __start_gate_vtop_patchlist[], __end_gate_vtop_patchlist[];
25*4882a593Smuzhiyun extern char __start_gate_fsyscall_patchlist[], __end_gate_fsyscall_patchlist[];
26*4882a593Smuzhiyun extern char __start_gate_brl_fsys_bubble_down_patchlist[], __end_gate_brl_fsys_bubble_down_patchlist[];
27*4882a593Smuzhiyun extern char __start_unwind[], __end_unwind[];
28*4882a593Smuzhiyun extern char __start_ivt_text[], __end_ivt_text[];
29*4882a593Smuzhiyun
30*4882a593Smuzhiyun #define HAVE_DEREFERENCE_FUNCTION_DESCRIPTOR 1
31*4882a593Smuzhiyun
32*4882a593Smuzhiyun #undef dereference_function_descriptor
dereference_function_descriptor(void * ptr)33*4882a593Smuzhiyun static inline void *dereference_function_descriptor(void *ptr)
34*4882a593Smuzhiyun {
35*4882a593Smuzhiyun struct fdesc *desc = ptr;
36*4882a593Smuzhiyun void *p;
37*4882a593Smuzhiyun
38*4882a593Smuzhiyun if (!get_kernel_nofault(p, (void *)&desc->ip))
39*4882a593Smuzhiyun ptr = p;
40*4882a593Smuzhiyun return ptr;
41*4882a593Smuzhiyun }
42*4882a593Smuzhiyun
43*4882a593Smuzhiyun #undef dereference_kernel_function_descriptor
dereference_kernel_function_descriptor(void * ptr)44*4882a593Smuzhiyun static inline void *dereference_kernel_function_descriptor(void *ptr)
45*4882a593Smuzhiyun {
46*4882a593Smuzhiyun if (ptr < (void *)__start_opd || ptr >= (void *)__end_opd)
47*4882a593Smuzhiyun return ptr;
48*4882a593Smuzhiyun return dereference_function_descriptor(ptr);
49*4882a593Smuzhiyun }
50*4882a593Smuzhiyun
51*4882a593Smuzhiyun #endif /* _ASM_IA64_SECTIONS_H */
52