patch-2.4.0-test10 linux/include/asm-ia64/module.h

• Lines: 109
• Date: Mon Oct 9 17:54:59 2000
• Orig file: v2.4.0-test9/linux/include/asm-ia64/module.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.0-test9/linux/include/asm-ia64/module.h linux/include/asm-ia64/module.h
@@ -0,0 +1,108 @@
+#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 */