| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 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 | |
| Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame^] | 38 | if (!get_kernel_nofault(p, (void *)&desc->ip)) |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 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 */ |