1 #ifndef _ASM_POWERPC_MODULE_H
2 #define _ASM_POWERPC_MODULE_H
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
12 #include <linux/list.h>
18 * Thanks to Paul M for explaining this.
20 * PPC can only do rel jumps += 32MB, and often the kernel and other
21 * modules are furthur away than this. So, we jump to a table of
22 * trampolines attached to the module (the Procedure Linkage Table)
23 * whenever that happens.
26 struct ppc_plt_entry {
27 /* 16 byte jump instruction sequence (4 instructions) */
30 #endif /* __powerpc64__ */
33 struct mod_arch_specific {
35 unsigned int stubs_section; /* Index of stubs section in module */
36 unsigned int toc_section; /* What section is the TOC? */
38 /* Indices of PLT sections within module. */
39 unsigned int core_plt_section;
40 unsigned int init_plt_section;
43 /* List of BUG addresses, source line numbers and filenames */
44 struct list_head bug_list;
45 struct bug_entry *bug_table;
46 unsigned int num_bugs;
49 extern struct bug_entry *module_find_bug(unsigned long bugaddr);
53 * Make empty section for module_frob_arch_sections to expand.
57 # define MODULES_ARE_ELF64
58 # define Elf_Shdr Elf64_Shdr
59 # define Elf_Sym Elf64_Sym
60 # define Elf_Ehdr Elf64_Ehdr
61 # define Elf_Rel Elf64_Rel
62 # define Elf_Rela Elf64_Rela
63 # define ELF_R_TYPE(X) ELF64_R_TYPE(X)
64 # define ELF_R_SYM(X) ELF64_R_SYM(X)
66 asm(".section .stubs,\"ax\",@nobits; .align 3; .previous");
69 # define MODULES_ARE_ELF32
70 # define Elf_Shdr Elf32_Shdr
71 # define Elf_Sym Elf32_Sym
72 # define Elf_Ehdr Elf32_Ehdr
73 # define Elf_Rel Elf32_Rel
74 # define Elf_Rela Elf32_Rela
75 # define ELF_R_TYPE(X) ELF32_R_TYPE(X)
76 # define ELF_R_SYM(X) ELF32_R_SYM(X)
78 asm(".section .plt,\"ax\",@nobits; .align 3; .previous");
79 asm(".section .init.plt,\"ax\",@nobits; .align 3; .previous");
84 struct exception_table_entry;
85 void sort_ex_table(struct exception_table_entry *start,
86 struct exception_table_entry *finish);
88 #endif /* __KERNEL__ */
89 #endif /* _ASM_POWERPC_MODULE_H */