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#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/config.h>
#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;
};
/*
* functions to add/remove a modules unwind info when
* it is loaded or unloaded.
*/
static inline int
ia64_module_init(struct module *mod)
{
#ifdef CONFIG_IA64_NEW_UNWIND
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 "arch_init_module: archdata->unw_table must be zero.\n");
return 1;
}
if (!mod_bound(archdata->gp, 0, mod))
{
printk(KERN_ERR "arch_init_module: archdata->gp out of bounds.\n");
return 1;
}
if (!mod_bound(archdata->unw_start, 0, mod))
{
printk(KERN_ERR "arch_init_module: archdata->unw_start out of bounds.\n");
return 1;
}
if (!mod_bound(archdata->unw_end, 0, mod))
{
printk(KERN_ERR "arch_init_module: archdata->unw_end out of bounds.\n");
return 1;
}
if (!mod_bound(archdata->segment_base, 0, mod))
{
printk(KERN_ERR "arch_init_module: 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, archdata->segment_base,
(unsigned long) archdata->gp,
(unsigned long) archdata->unw_start,
(unsigned long) archdata->unw_end);
#endif /* CONFIG_IA64_NEW_UNWIND */
return 0;
}
static inline void
ia64_module_unmap(void * addr)
{
#ifdef CONFIG_IA64_NEW_UNWIND
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(archdata->unw_table);
}
#endif /* CONFIG_IA64_NEW_UNWIND */
vfree(addr);
}
#endif /* _ASM_IA64_MODULE_H */
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