linux - include/asm-ppc/module.h

44 lines · 1.2 KiB

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
16	struct ppc_plt_entry
17	{
18	/* 16 byte jump instruction sequence (4 instructions) */
19	unsigned int jump[4];
20	};
21
22	struct 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
33	extern 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
41	asm(".section .plt,\"ax\",@nobits; .align 3; .previous");
42	asm(".section .init.plt,\"ax\",@nobits; .align 3; .previous");
43	#endif
44	#endif /* _ASM_PPC_MODULE_H */