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 14 extern char __phys_per_cpu_start[]; 15 #ifdef CONFIG_SMP 16 extern char __cpu0_per_cpu[]; 17 #endif 18 extern char __start___vtop_patchlist[], __end___vtop_patchlist[]; 19 extern char __start___rse_patchlist[], __end___rse_patchlist[]; 20 extern char __start___mckinley_e9_bundles[], __end___mckinley_e9_bundles[]; 21 extern char __start___phys_stack_reg_patchlist[], __end___phys_stack_reg_patchlist[]; 22 extern char __start_gate_section[]; 23 extern char __start_gate_mckinley_e9_patchlist[], __end_gate_mckinley_e9_patchlist[]; 24 extern char __start_gate_vtop_patchlist[], __end_gate_vtop_patchlist[]; 25 extern char __start_gate_fsyscall_patchlist[], __end_gate_fsyscall_patchlist[]; 26 extern char __start_gate_brl_fsys_bubble_down_patchlist[], __end_gate_brl_fsys_bubble_down_patchlist[]; 27 extern char __start_unwind[], __end_unwind[]; 28 extern char __start_ivt_text[], __end_ivt_text[]; 29 30 #define HAVE_DEREFERENCE_FUNCTION_DESCRIPTOR 1 31 32 #undef dereference_function_descriptor 33 static 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 44 static 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