From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- arch/mips/kernel/module.c | 53 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 53 insertions(+) create mode 100644 arch/mips/kernel/module.c (limited to 'arch/mips/kernel/module.c') diff --git a/arch/mips/kernel/module.c b/arch/mips/kernel/module.c new file mode 100644 index 00000000000..458af3c7a63 --- /dev/null +++ b/arch/mips/kernel/module.c @@ -0,0 +1,53 @@ +#include +#include + +static LIST_HEAD(dbe_list); +static DEFINE_SPINLOCK(dbe_lock); + +/* Given an address, look for it in the module exception tables. */ +const struct exception_table_entry *search_module_dbetables(unsigned long addr) +{ + unsigned long flags; + const struct exception_table_entry *e = NULL; + struct mod_arch_specific *dbe; + + spin_lock_irqsave(&dbe_lock, flags); + list_for_each_entry(dbe, &dbe_list, dbe_list) { + e = search_extable(dbe->dbe_start, dbe->dbe_end - 1, addr); + if (e) + break; + } + spin_unlock_irqrestore(&dbe_lock, flags); + + /* Now, if we found one, we are running inside it now, hence + we cannot unload the module, hence no refcnt needed. */ + return e; +} + +/* Put in dbe list if neccessary. */ +int module_finalize(const Elf_Ehdr *hdr, + const Elf_Shdr *sechdrs, + struct module *me) +{ + const Elf_Shdr *s; + char *secstrings = (void *)hdr + sechdrs[hdr->e_shstrndx].sh_offset; + + INIT_LIST_HEAD(&me->arch.dbe_list); + for (s = sechdrs; s < sechdrs + hdr->e_shnum; s++) { + if (strcmp("__dbe_table", secstrings + s->sh_name) != 0) + continue; + me->arch.dbe_start = (void *)s->sh_addr; + me->arch.dbe_end = (void *)s->sh_addr + s->sh_size; + spin_lock_irq(&dbe_lock); + list_add(&me->arch.dbe_list, &dbe_list); + spin_unlock_irq(&dbe_lock); + } + return 0; +} + +void module_arch_cleanup(struct module *mod) +{ + spin_lock_irq(&dbe_lock); + list_del(&mod->arch.dbe_list); + spin_unlock_irq(&dbe_lock); +} -- cgit v1.2.3-18-g5258