Viewing file:  module.h (2.66 KB) -rw-r--r--
Select action/file-type:
 (+) |  (+) |  (+) | Code (+) | Session (+) |  (+) | SDB (+) |  (+) |  (+) |  (+) |  (+) |  (+) |
#ifndef _ASM_IA64_MODULE_H
#define _ASM_IA64_MODULE_H
/*
* This file contains the ia64 architecture specific module code.
*
* Copyright (C) 2000 Intel Corporation.
* Copyright (C) 2000 Mike Stephens <mike.stephens@intel.com>
*/
#include <linux/module.h>
#include <linux/vmalloc.h>
#include <asm/unwind.h>
#define module_map(x) vmalloc(x)
#define module_unmap(x) ia64_module_unmap(x)
#define module_arch_init(x) ia64_module_init(x)
/*
* This must match in size and layout the data created by
* modutils/obj/obj-ia64.c
*/
struct archdata {
const char *unw_table;
const char *segment_base;
const char *unw_start;
const char *unw_end;
const char *gp;
};
static inline void
arch_init_modules (struct module *kmod)
{
static struct archdata archdata;
register char *kernel_gp asm ("gp");
archdata.gp = kernel_gp;
kmod->archdata_start = (const char *) &archdata;
kmod->archdata_end = (const char *) (&archdata + 1);
}
/*
* functions to add/remove a modules unwind info when
* it is loaded or unloaded.
*/
static inline int
ia64_module_init (struct module *mod)
{
struct archdata *archdata;
if (!mod_member_present(mod, archdata_start) || !mod->archdata_start)
return 0;
archdata = (struct archdata *)(mod->archdata_start);
/*
* Make sure the unwind pointers are sane.
*/
if (archdata->unw_table) {
printk(KERN_ERR "module_arch_init: archdata->unw_table must be zero.\n");
return 1;
}
if (!mod_bound(archdata->gp, 0, mod)) {
printk(KERN_ERR "module_arch_init: archdata->gp out of bounds.\n");
return 1;
}
if (!mod_bound(archdata->unw_start, 0, mod)) {
printk(KERN_ERR "module_arch_init: archdata->unw_start out of bounds.\n");
return 1;
}
if (!mod_bound(archdata->unw_end, 0, mod)) {
printk(KERN_ERR "module_arch_init: archdata->unw_end out of bounds.\n");
return 1;
}
if (!mod_bound(archdata->segment_base, 0, mod)) {
printk(KERN_ERR "module_arch_init: archdata->unw_table out of bounds.\n");
return 1;
}
/*
* Pointers are reasonable, add the module unwind table
*/
archdata->unw_table = unw_add_unwind_table(mod->name,
(unsigned long) archdata->segment_base,
(unsigned long) archdata->gp,
archdata->unw_start, archdata->unw_end);
return 0;
}
static inline void
ia64_module_unmap (void * addr)
{
struct module *mod = (struct module *) addr;
struct archdata *archdata;
/*
* Before freeing the module memory remove the unwind table entry
*/
if (mod_member_present(mod, archdata_start) && mod->archdata_start) {
archdata = (struct archdata *)(mod->archdata_start);
if (archdata->unw_table != NULL)
unw_remove_unwind_table((void *) archdata->unw_table);
}
vfree(addr);
}
#endif /* _ASM_IA64_MODULE_H */
|