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1#ifndef _ASM_PPC_MODULE_H
2#define _ASM_PPC_MODULE_H
3/* Module stuff for PPC. (C) 2001 Rusty Russell */
4
5#include <linux/list.h>
6#include <asm/bug.h>
7
8/* Thanks to Paul M for explaining this.
9
10 PPC can only do rel jumps += 32MB, and often the kernel and other
11 modules are furthur away than this. So, we jump to a table of
12 trampolines attached to the module (the Procedure Linkage Table)
13 whenever that happens.
14*/
15
16struct ppc_plt_entry
17{
18 /* 16 byte jump instruction sequence (4 instructions) */
19 unsigned int jump[4];
20};
21
22struct mod_arch_specific
23{
24 /* Indices of PLT sections within module. */
25 unsigned int core_plt_section, init_plt_section;
26
27 /* List of BUG addresses, source line numbers and filenames */
28 struct list_head bug_list;
29 struct bug_entry *bug_table;
30 unsigned int num_bugs;
31};
32
33extern struct bug_entry *module_find_bug(unsigned long bugaddr);
34
35#define Elf_Shdr Elf32_Shdr
36#define Elf_Sym Elf32_Sym
37#define Elf_Ehdr Elf32_Ehdr
38
39/* Make empty sections for module_frob_arch_sections to expand. */
40#ifdef MODULE
41asm(".section .plt,\"ax\",@nobits; .align 3; .previous");
42asm(".section .init.plt,\"ax\",@nobits; .align 3; .previous");
43#endif
44#endif /* _ASM_PPC_MODULE_H */