| 1 | #ifndef _ASM_POWERPC_MODULE_H
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| 2 | #define _ASM_POWERPC_MODULE_H
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| 3 | #ifdef __KERNEL__
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| 4 |
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| 5 | |
| 6 | * This program is free software; you can redistribute it and/or
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| 7 | * modify it under the terms of the GNU General Public License
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| 8 | * as published by the Free Software Foundation; either version
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| 9 | * 2 of the License, or (at your option) any later version.
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| 10 |
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| 11 |
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| 12 | #include <linux/list.h>
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| 13 | #include <asm/bug.h>
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| 14 |
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| 15 |
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| 16 | #ifndef __powerpc64__
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| 17 | |
| 18 | * Thanks to Paul M for explaining this.
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| 19 | *
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| 20 | * PPC can only do rel jumps += 32MB, and often the kernel and other
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| 21 | * modules are furthur away than this. So, we jump to a table of
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| 22 | * trampolines attached to the module (the Procedure Linkage Table)
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| 23 | * whenever that happens.
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| 24 |
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| 25 |
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| 26 | struct ppc_plt_entry {
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| 27 |
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| 28 | unsigned int jump[4];
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| 29 | };
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| 30 | #endif
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| 31 |
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| 32 |
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| 33 | struct mod_arch_specific {
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| 34 | #ifdef __powerpc64__
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| 35 | unsigned int stubs_section;
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| 36 | unsigned int toc_section;
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| 37 | #else
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| 38 |
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| 39 | unsigned int core_plt_section;
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| 40 | unsigned int init_plt_section;
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| 41 | #endif
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| 42 |
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| 43 |
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| 44 | struct list_head bug_list;
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| 45 | struct bug_entry *bug_table;
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| 46 | unsigned int num_bugs;
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| 47 | };
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| 48 |
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| 49 | |
| 50 | * Select ELF headers.
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| 51 | * Make empty section for module_frob_arch_sections to expand.
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| 52 |
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| 53 |
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| 54 | #ifdef __powerpc64__
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| 55 | # define Elf_Shdr Elf64_Shdr
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| 56 | # define Elf_Sym Elf64_Sym
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| 57 | # define Elf_Ehdr Elf64_Ehdr
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| 58 | # ifdef MODULE
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| 59 | asm(".section .stubs,\"ax\",@nobits; .align 3; .previous");
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| 60 | # endif
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| 61 | #else
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| 62 | # define Elf_Shdr Elf32_Shdr
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| 63 | # define Elf_Sym Elf32_Sym
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| 64 | # define Elf_Ehdr Elf32_Ehdr
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| 65 | # ifdef MODULE
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| 66 | asm(".section .plt,\"ax\",@nobits; .align 3; .previous");
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| 67 | asm(".section .init.plt,\"ax\",@nobits; .align 3; .previous");
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| 68 | # endif
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| 69 | #endif
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| 70 |
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| 71 |
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| 72 | struct exception_table_entry;
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| 73 | void sort_ex_table(struct exception_table_entry *start,
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| 74 | struct exception_table_entry *finish);
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| 75 |
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| 76 | #endif
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| 77 | #endif
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