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Diffstat (limited to 'include/asm-ppc/module.h')
| -rw-r--r-- | include/asm-ppc/module.h | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/include/asm-ppc/module.h b/include/asm-ppc/module.h new file mode 100644 index 000000000000..fb63492562b0 --- /dev/null +++ b/include/asm-ppc/module.h @@ -0,0 +1,44 @@ +#ifndef _ASM_PPC_MODULE_H +#define _ASM_PPC_MODULE_H +/* Module stuff for PPC. (C) 2001 Rusty Russell */ + +#include <linux/list.h> +#include <asm/bug.h> + +/* Thanks to Paul M for explaining this. + + PPC can only do rel jumps += 32MB, and often the kernel and other + modules are furthur away than this. So, we jump to a table of + trampolines attached to the module (the Procedure Linkage Table) + whenever that happens. +*/ + +struct ppc_plt_entry +{ + /* 16 byte jump instruction sequence (4 instructions) */ + unsigned int jump[4]; +}; + +struct mod_arch_specific +{ + /* Indices of PLT sections within module. */ + unsigned int core_plt_section, init_plt_section; + + /* List of BUG addresses, source line numbers and filenames */ + struct list_head bug_list; + struct bug_entry *bug_table; + unsigned int num_bugs; +}; + +extern struct bug_entry *module_find_bug(unsigned long bugaddr); + +#define Elf_Shdr Elf32_Shdr +#define Elf_Sym Elf32_Sym +#define Elf_Ehdr Elf32_Ehdr + +/* Make empty sections for module_frob_arch_sections to expand. */ +#ifdef MODULE +asm(".section .plt,\"ax\",@nobits; .align 3; .previous"); +asm(".section .init.plt,\"ax\",@nobits; .align 3; .previous"); +#endif +#endif /* _ASM_PPC_MODULE_H */ |