[PATCH] mips: IRIX 5 compat fixes

Start to resurrect the IRIX 5 binary compatibility code.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/mips/kernel/irix5sys.h → arch/mips/kernel/irix5sys.S

 /*
- * irix5sys.h: 32-bit IRIX5 ABI system call table.
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
  *
- * Copyright (C) 1996 David S. Miller (dm@engr.sgi.com)
- */
-
-/* This file is being included twice - once to build a list of all
- * syscalls and once to build a table of how many arguments each syscall
- * accepts.  Syscalls that receive a pointer to the saved registers are
- * marked as having zero arguments.
+ * 32-bit IRIX5 ABI system call table derived from original file 'irix5sys.h'
+ * created by David S. Miller.
+ *
+ * Copyright (C) 1996 - 2004 David S. Miller <dm@engr.sgi.com>
+ * Copyright (C) 2004 Steven J. Hill <sjhill@realitydiluted.com>
  */
-#include <linux/config.h>
+#include <asm/asm.h>
 
-/* Keys:
+	/*
+	 * Key:
 	 *         V == Valid and should work as expected for most cases.
 	 *        HV == Half Valid, some things will work, some likely will not
 	 *        IV == InValid, certainly will not work at all yet
@@ -19,7 +20,8 @@
 	 *        DC == Don't Care, a rats ass we couldn't give
 	 */
 
-#ifdef CONFIG_BINFMT_IRIX
+	.macro	irix5syscalltable
+
 	sys	sys_syscall	0	/* 1000  sysindir()	       V*/
 	sys	sys_exit	1	/* 1001  exit()		       V*/
 	sys	sys_fork	0	/* 1002  fork()		       V*/
@@ -247,7 +249,7 @@
 	sys	irix_unimp	0	/* 1224  XXX psema_cntl()	*/
 	sys	irix_unimp	0	/* 1225  XXX restartreturn()	*/
 
-/* Just to pad things out nicely. */
+	/* Just to pad things out nicely. */
 	sys	irix_unimp	0
 	sys	irix_unimp	0
 	sys	irix_unimp	0
@@ -1022,8 +1024,18 @@
 	sys	irix_unimp	0
 	sys	irix_unimp	0
 	sys	irix_unimp	0
-#else
-	mille	sys_ni_syscall	0
-#endif
 
-/* YEEEEEEEEEEEEEEEEEE!!!! */
+	.endm
+
+	/*
+	 * Pre-compute the number of _instruction_ bytes needed to load
+	 * or store the arguments 6-8. Negative values are ignored.
+	 */
+	.macro  sys function, nargs
+	PTR	\function
+	LONG	(\nargs << 2) - (5 << 2)
+	.endm
+
+	.align	4
+EXPORT(sys_call_table_irix5)
+	irix5syscalltable

arch/mips/kernel/irixelf.c

 /*
- * irixelf.c: Code to load IRIX ELF executables which conform to
- *            the MIPS ABI.
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
  *
- * Copyright (C) 1996 David S. Miller (dm@engr.sgi.com)
+ * irixelf.c: Code to load IRIX ELF executables conforming to the MIPS ABI.
+ *            Based off of work by Eric Youngdale.
  *
- * Based upon work which is:
- * Copyright 1993, 1994: Eric Youngdale (ericy@cais.com).
+ * Copyright (C) 1993 - 1994 Eric Youngdale <ericy@cais.com>
+ * Copyright (C) 1996 - 2004 David S. Miller <dm@engr.sgi.com>
+ * Copyright (C) 2004 Steven J. Hill <sjhill@realitydiluted.com>
  */
-
 #include <linux/module.h>
-
 #include <linux/fs.h>
 #include <linux/stat.h>
 #include <linux/sched.h>
@@ -211,13 +212,13 @@ unsigned long * create_irix_tables(char * p, int argc, int envc,
 		__put_user((unsigned long)p,argv++);
 		p += strlen_user(p);
 	}
-	__put_user(NULL, argv);
+	__put_user((unsigned long) NULL, argv);
 	current->mm->arg_end = current->mm->env_start = (unsigned long) p;
 	while (envc-->0) {
 		__put_user((unsigned long)p,envp++);
 		p += strlen_user(p);
 	}
-	__put_user(NULL, envp);
+	__put_user((unsigned long) NULL, envp);
 	current->mm->env_end = (unsigned long) p;
 	return sp;
 }
@@ -622,6 +623,7 @@ static int load_irix_binary(struct linux_binprm * bprm, struct pt_regs * regs)
 	}
 
 	retval = kernel_read(bprm->file, elf_ex.e_phoff, (char *)elf_phdata, size);
+
 	if (retval < 0)
 		goto out_free_ph;
 
@@ -934,7 +936,8 @@ unsigned long irix_mapelf(int fd, struct elf_phdr *user_phdrp, int cnt)
 	}
 
 #ifdef DEBUG_ELF
-	printk("irix_mapelf: Success, returning %08lx\n", user_phdrp->p_vaddr);
+	printk("irix_mapelf: Success, returning %08lx\n",
+		(unsigned long) user_phdrp->p_vaddr);
 #endif
 	fput(filp);
 	return user_phdrp->p_vaddr;
@@ -1297,6 +1300,20 @@ static int irix_core_dump(long signr, struct pt_regs * regs, struct file *file)
 
 static int __init init_irix_binfmt(void)
 {
+	int init_inventory(void);
+	extern asmlinkage unsigned long sys_call_table;
+	extern asmlinkage unsigned long sys_call_table_irix5;
+
+	init_inventory();
+
+	/*
+	 * Copy the IRIX5 syscall table (8000 bytes) into the main syscall
+	 * table. The IRIX5 calls are located by an offset of 8000 bytes
+	 * from the beginning of the main table.
+	 */
+	memcpy((void *) ((unsigned long) &sys_call_table + 8000),
+		&sys_call_table_irix5, 8000);
+
 	return register_binfmt(&irix_format);
 }
 

arch/mips/kernel/irixinv.c

@@ -6,10 +6,8 @@
  * Miguel de Icaza, 1997.
  */
 #include <linux/mm.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <asm/uaccess.h>
 #include <asm/inventory.h>
+#include <asm/uaccess.h>
 
 #define MAX_INVENTORY 50
 int inventory_items = 0;
@@ -49,7 +47,7 @@ int dump_inventory_to_user (void *userbuf, int size)
 	return inventory_items * sizeof (inventory_t);
 }
 
-static int __init init_inventory(void)
+int __init init_inventory(void)
 {
 	/*
 	 * gross hack while we put the right bits all over the kernel
@@ -77,5 +75,3 @@ static int __init init_inventory(void)
 
 	return 0;
 }
-
-module_init(init_inventory);

arch/mips/kernel/irixsig.c

@@ -624,7 +624,7 @@ asmlinkage int irix_waitsys(int type, int pid, struct irix5_siginfo *info,
 			}
 			goto end_waitsys;
 
-		case TASK_ZOMBIE:
+		case EXIT_ZOMBIE:
 			current->signal->cutime += p->utime + p->signal->cutime;
 			current->signal->cstime += p->stime + p->signal->cstime;
 			if (ru != NULL)

arch/mips/kernel/sysirix.c

@@ -1648,7 +1648,7 @@ asmlinkage int irix_statvfs64(char *fname, struct irix_statvfs64 *buf)
 	struct kstatfs kbuf;
 	int error, i;
 
-	printk("[%s:%d] Wheee.. irix_statvfs(%s,%p)\n",
+	printk("[%s:%d] Wheee.. irix_statvfs64(%s,%p)\n",
 	       current->comm, current->pid, fname, buf);
 	error = verify_area(VERIFY_WRITE, buf, sizeof(struct irix_statvfs64));
 	if(error)
@@ -1694,7 +1694,7 @@ asmlinkage int irix_fstatvfs64(int fd, struct irix_statvfs *buf)
 	struct file *file;
 	int error, i;
 
-	printk("[%s:%d] Wheee.. irix_fstatvfs(%d,%p)\n",
+	printk("[%s:%d] Wheee.. irix_fstatvfs64(%d,%p)\n",
 	       current->comm, current->pid, fd, buf);
 
 	error = verify_area(VERIFY_WRITE, buf, sizeof(struct irix_statvfs));