projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 2874c5fd | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| a37c8875 | 2 | #ifndef _ASM_POWERPC_MODULE_H |
| 3 | #define _ASM_POWERPC_MODULE_H | |
| 88ced031 | 4 | #ifdef __KERNEL__ |
| 6b9269ab | 5 | |
| 6b9269ab JL |
6 | #include <linux/list.h> |
| 7 | #include <asm/bug.h> | |
| 786d35d4 | 8 | #include <asm-generic/module.h> |
| 6b9269ab | 9 | |
| 6b9269ab JL |
10 | #ifndef __powerpc64__ |
| 11 | /* | |
| 12 | * Thanks to Paul M for explaining this. | |
| 13 | * | |
| 14 | * PPC can only do rel jumps += 32MB, and often the kernel and other | |
| 446957ba | 15 | * modules are further away than this. So, we jump to a table of |
| 6b9269ab JL |
16 | * trampolines attached to the module (the Procedure Linkage Table) |
| 17 | * whenever that happens. | |
| 18 | */ | |
| 19 | ||
| 20 | struct ppc_plt_entry { | |
| 21 | /* 16 byte jump instruction sequence (4 instructions) */ | |
| 22 | unsigned int jump[4]; | |
| 23 | }; | |
| 24 | #endif /* __powerpc64__ */ | |
| 25 | ||
| 26 | ||
| 27 | struct mod_arch_specific { | |
| 28 | #ifdef __powerpc64__ | |
| 29 | unsigned int stubs_section; /* Index of stubs section in module */ | |
| 30 | unsigned int toc_section; /* What section is the TOC? */ | |
| 4edebbea | 31 | bool toc_fixed; /* Have we fixed up .TOC.? */ |
| f48cb8b4 | 32 | |
| 5633e85b SS |
33 | /* For module function descriptor dereference */ |
| 34 | unsigned long start_opd; | |
| 35 | unsigned long end_opd; | |
| 7cc45e64 | 36 | #else /* powerpc64 */ |
| 6b9269ab JL |
37 | /* Indices of PLT sections within module. */ |
| 38 | unsigned int core_plt_section; | |
| 39 | unsigned int init_plt_section; | |
| 8ce621e1 JP |
40 | #endif /* powerpc64 */ |
| 41 | ||
| 7cc45e64 SR |
42 | #ifdef CONFIG_DYNAMIC_FTRACE |
| 43 | unsigned long tramp; | |
| 8ce621e1 | 44 | unsigned long tramp_regs; |
| 6b9269ab JL |
45 | #endif |
| 46 | ||
| 47 | /* List of BUG addresses, source line numbers and filenames */ | |
| 48 | struct list_head bug_list; | |
| 49 | struct bug_entry *bug_table; | |
| 50 | unsigned int num_bugs; | |
| 51 | }; | |
| 52 | ||
| 6b9269ab JL |
53 | /* |
| 54 | * Select ELF headers. | |
| 55 | * Make empty section for module_frob_arch_sections to expand. | |
| 56 | */ | |
| 57 | ||
| 58 | #ifdef __powerpc64__ | |
| 6b9269ab JL |
59 | # ifdef MODULE |
| 60 | asm(".section .stubs,\"ax\",@nobits; .align 3; .previous"); | |
| 61 | # endif | |
| 62 | #else | |
| 6b9269ab JL |
63 | # ifdef MODULE |
| 64 | asm(".section .plt,\"ax\",@nobits; .align 3; .previous"); | |
| 65 | asm(".section .init.plt,\"ax\",@nobits; .align 3; .previous"); | |
| 66 | # endif /* MODULE */ | |
| 67 | #endif | |
| 68 | ||
| f48cb8b4 SR |
69 | #ifdef CONFIG_DYNAMIC_FTRACE |
| 70 | # ifdef MODULE | |
| 71 | asm(".section .ftrace.tramp,\"ax\",@nobits; .align 3; .previous"); | |
| 72 | # endif /* MODULE */ | |
| f48cb8b4 | 73 | |
| f17c4e01 | 74 | int module_trampoline_target(struct module *mod, unsigned long trampoline, |
| dd9fa162 | 75 | unsigned long *target); |
| 136cd345 ME |
76 | int module_finalize_ftrace(struct module *mod, const Elf_Shdr *sechdrs); |
| 77 | #else | |
| 78 | static inline int module_finalize_ftrace(struct module *mod, const Elf_Shdr *sechdrs) | |
| 79 | { | |
| 80 | return 0; | |
| 81 | } | |
| 82 | #endif | |
| 83 | ||
| 88ced031 | 84 | #endif /* __KERNEL__ */ |
| a37c8875 | 85 | #endif /* _ASM_POWERPC_MODULE_H */ |