Linux-2.6.12-rc2v2.6.12-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!

1 files changed, 1326 insertions, 0 deletions

diff --git a/arch/mips/kernel/irixelf.c b/arch/mips/kernel/irixelf.c
new file mode 100644
index 000000000000..4af20cd91f9f
--- /dev/null
+++ b/arch/mips/kernel/irixelf.c
@@ -0,0 +1,1326 @@
+/*
+ * 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.
+ *
+ * irixelf.c: Code to load IRIX ELF executables conforming to the MIPS ABI.
+ *            Based off of work by Eric Youngdale.
+ *
+ * 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>
+#include <linux/mm.h>
+#include <linux/mman.h>
+#include <linux/a.out.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/signal.h>
+#include <linux/binfmts.h>
+#include <linux/string.h>
+#include <linux/file.h>
+#include <linux/fcntl.h>
+#include <linux/ptrace.h>
+#include <linux/slab.h>
+#include <linux/shm.h>
+#include <linux/personality.h>
+#include <linux/elfcore.h>
+#include <linux/smp_lock.h>
+
+#include <asm/uaccess.h>
+#include <asm/mipsregs.h>
+#include <asm/prctl.h>
+
+#define DLINFO_ITEMS 12
+
+#include <linux/elf.h>
+
+#undef DEBUG_ELF
+
+static int load_irix_binary(struct linux_binprm * bprm, struct pt_regs * regs);
+static int load_irix_library(struct file *);
+static int irix_core_dump(long signr, struct pt_regs * regs,
+                          struct file *file);
+
+static struct linux_binfmt irix_format = {
+        NULL, THIS_MODULE, load_irix_binary, load_irix_library,
+        irix_core_dump, PAGE_SIZE
+};
+
+#ifndef elf_addr_t
+#define elf_addr_t unsigned long
+#endif
+
+#ifdef DEBUG_ELF
+/* Debugging routines. */
+static char *get_elf_p_type(Elf32_Word p_type)
+{
+        int i = (int) p_type;
+
+        switch(i) {
+        case PT_NULL: return("PT_NULL"); break;
+        case PT_LOAD: return("PT_LOAD"); break;
+        case PT_DYNAMIC: return("PT_DYNAMIC"); break;
+        case PT_INTERP: return("PT_INTERP"); break;
+        case PT_NOTE: return("PT_NOTE"); break;
+        case PT_SHLIB: return("PT_SHLIB"); break;
+        case PT_PHDR: return("PT_PHDR"); break;
+        case PT_LOPROC: return("PT_LOPROC/REGINFO"); break;
+        case PT_HIPROC: return("PT_HIPROC"); break;
+        default: return("PT_BOGUS"); break;
+        }
+}
+
+static void print_elfhdr(struct elfhdr *ehp)
+{
+        int i;
+
+        printk("ELFHDR: e_ident<");
+        for(i = 0; i < (EI_NIDENT - 1); i++) printk("%x ", ehp->e_ident[i]);
+        printk("%x>\n", ehp->e_ident[i]);
+        printk("        e_type[%04x] e_machine[%04x] e_version[%08lx]\n",
+               (unsigned short) ehp->e_type, (unsigned short) ehp->e_machine,
+               (unsigned long) ehp->e_version);
+        printk("        e_entry[%08lx] e_phoff[%08lx] e_shoff[%08lx] "
+               "e_flags[%08lx]\n",
+               (unsigned long) ehp->e_entry, (unsigned long) ehp->e_phoff,
+               (unsigned long) ehp->e_shoff, (unsigned long) ehp->e_flags);
+        printk("        e_ehsize[%04x] e_phentsize[%04x] e_phnum[%04x]\n",
+               (unsigned short) ehp->e_ehsize, (unsigned short) ehp->e_phentsize,
+               (unsigned short) ehp->e_phnum);
+        printk("        e_shentsize[%04x] e_shnum[%04x] e_shstrndx[%04x]\n",
+               (unsigned short) ehp->e_shentsize, (unsigned short) ehp->e_shnum,
+               (unsigned short) ehp->e_shstrndx);
+}
+
+static void print_phdr(int i, struct elf_phdr *ep)
+{
+        printk("PHDR[%d]: p_type[%s] p_offset[%08lx] p_vaddr[%08lx] "
+               "p_paddr[%08lx]\n", i, get_elf_p_type(ep->p_type),
+               (unsigned long) ep->p_offset, (unsigned long) ep->p_vaddr,
+               (unsigned long) ep->p_paddr);
+        printk("         p_filesz[%08lx] p_memsz[%08lx] p_flags[%08lx] "
+               "p_align[%08lx]\n", (unsigned long) ep->p_filesz,
+               (unsigned long) ep->p_memsz, (unsigned long) ep->p_flags,
+               (unsigned long) ep->p_align);
+}
+
+static void dump_phdrs(struct elf_phdr *ep, int pnum)
+{
+        int i;
+
+        for(i = 0; i < pnum; i++, ep++) {
+                if((ep->p_type == PT_LOAD) ||
+                   (ep->p_type == PT_INTERP) ||
+                   (ep->p_type == PT_PHDR))
+                        print_phdr(i, ep);
+        }
+}
+#endif /* (DEBUG_ELF) */
+
+static void set_brk(unsigned long start, unsigned long end)
+{
+        start = PAGE_ALIGN(start);
+        end = PAGE_ALIGN(end);
+        if (end <= start)
+                return;
+        down_write(&current->mm->mmap_sem);
+        do_brk(start, end - start);
+        up_write(&current->mm->mmap_sem);
+}
+
+
+/* We need to explicitly zero any fractional pages
+ * after the data section (i.e. bss).  This would
+ * contain the junk from the file that should not
+ * be in memory.
+ */
+static void padzero(unsigned long elf_bss)
+{
+        unsigned long nbyte;
+
+        nbyte = elf_bss & (PAGE_SIZE-1);
+        if (nbyte) {
+                nbyte = PAGE_SIZE - nbyte;
+                clear_user((void *) elf_bss, nbyte);
+        }
+}
+
+unsigned long * create_irix_tables(char * p, int argc, int envc,
+                                   struct elfhdr * exec, unsigned int load_addr,
+                                   unsigned int interp_load_addr,
+                                   struct pt_regs *regs, struct elf_phdr *ephdr)
+{
+        elf_addr_t *argv;
+        elf_addr_t *envp;
+        elf_addr_t *sp, *csp;
+
+#ifdef DEBUG_ELF
+        printk("create_irix_tables: p[%p] argc[%d] envc[%d] "
+               "load_addr[%08x] interp_load_addr[%08x]\n",
+               p, argc, envc, load_addr, interp_load_addr);
+#endif
+        sp = (elf_addr_t *) (~15UL & (unsigned long) p);
+        csp = sp;
+        csp -= exec ? DLINFO_ITEMS*2 : 2;
+        csp -= envc+1;
+        csp -= argc+1;
+        csp -= 1;               /* argc itself */
+        if ((unsigned long)csp & 15UL) {
+                sp -= (16UL - ((unsigned long)csp & 15UL)) / sizeof(*sp);
+        }
+
+        /*
+         * Put the ELF interpreter info on the stack
+         */
+#define NEW_AUX_ENT(nr, id, val) \
+          __put_user ((id), sp+(nr*2)); \
+          __put_user ((val), sp+(nr*2+1)); \
+
+        sp -= 2;
+        NEW_AUX_ENT(0, AT_NULL, 0);
+
+        if(exec) {
+                sp -= 11*2;
+
+                NEW_AUX_ENT (0, AT_PHDR, load_addr + exec->e_phoff);
+                NEW_AUX_ENT (1, AT_PHENT, sizeof (struct elf_phdr));
+                NEW_AUX_ENT (2, AT_PHNUM, exec->e_phnum);
+                NEW_AUX_ENT (3, AT_PAGESZ, ELF_EXEC_PAGESIZE);
+                NEW_AUX_ENT (4, AT_BASE, interp_load_addr);
+                NEW_AUX_ENT (5, AT_FLAGS, 0);
+                NEW_AUX_ENT (6, AT_ENTRY, (elf_addr_t) exec->e_entry);
+                NEW_AUX_ENT (7, AT_UID, (elf_addr_t) current->uid);
+                NEW_AUX_ENT (8, AT_EUID, (elf_addr_t) current->euid);
+                NEW_AUX_ENT (9, AT_GID, (elf_addr_t) current->gid);
+                NEW_AUX_ENT (10, AT_EGID, (elf_addr_t) current->egid);
+        }
+#undef NEW_AUX_ENT
+
+        sp -= envc+1;
+        envp = sp;
+        sp -= argc+1;
+        argv = sp;
+
+        __put_user((elf_addr_t)argc,--sp);
+        current->mm->arg_start = (unsigned long) p;
+        while (argc-->0) {
+                __put_user((unsigned long)p,argv++);
+                p += strlen_user(p);
+        }
+        __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((unsigned long) NULL, envp);
+        current->mm->env_end = (unsigned long) p;
+        return sp;
+}
+
+
+/* This is much more generalized than the library routine read function,
+ * so we keep this separate.  Technically the library read function
+ * is only provided so that we can read a.out libraries that have
+ * an ELF header.
+ */
+static unsigned int load_irix_interp(struct elfhdr * interp_elf_ex,
+                                     struct file * interpreter,
+                                     unsigned int *interp_load_addr)
+{
+        struct elf_phdr *elf_phdata  =  NULL;
+        struct elf_phdr *eppnt;
+        unsigned int len;
+        unsigned int load_addr;
+        int elf_bss;
+        int retval;
+        unsigned int last_bss;
+        int error;
+        int i;
+        unsigned int k;
+
+        elf_bss = 0;
+        last_bss = 0;
+        error = load_addr = 0;
+
+#ifdef DEBUG_ELF
+        print_elfhdr(interp_elf_ex);
+#endif
+
+        /* First of all, some simple consistency checks */
+        if ((interp_elf_ex->e_type != ET_EXEC &&
+             interp_elf_ex->e_type != ET_DYN) ||
+             !irix_elf_check_arch(interp_elf_ex) ||
+             !interpreter->f_op->mmap) {
+                printk("IRIX interp has bad e_type %d\n", interp_elf_ex->e_type);
+                return 0xffffffff;
+        }
+
+        /* Now read in all of the header information */
+        if(sizeof(struct elf_phdr) * interp_elf_ex->e_phnum > PAGE_SIZE) {
+            printk("IRIX interp header bigger than a page (%d)\n",
+                   (sizeof(struct elf_phdr) * interp_elf_ex->e_phnum));
+            return 0xffffffff;
+        }
+
+        elf_phdata = kmalloc(sizeof(struct elf_phdr) * interp_elf_ex->e_phnum,
+                             GFP_KERNEL);
+
+        if(!elf_phdata) {
+          printk("Cannot kmalloc phdata for IRIX interp.\n");
+          return 0xffffffff;
+        }
+
+        /* If the size of this structure has changed, then punt, since
+         * we will be doing the wrong thing.
+         */
+        if(interp_elf_ex->e_phentsize != 32) {
+                printk("IRIX interp e_phentsize == %d != 32 ",
+                       interp_elf_ex->e_phentsize);
+                kfree(elf_phdata);
+                return 0xffffffff;
+        }
+
+        retval = kernel_read(interpreter, interp_elf_ex->e_phoff,
+                           (char *) elf_phdata,
+                           sizeof(struct elf_phdr) * interp_elf_ex->e_phnum);
+
+#ifdef DEBUG_ELF
+        dump_phdrs(elf_phdata, interp_elf_ex->e_phnum);
+#endif
+
+        eppnt = elf_phdata;
+        for(i=0; i<interp_elf_ex->e_phnum; i++, eppnt++) {
+          if(eppnt->p_type == PT_LOAD) {
+            int elf_type = MAP_PRIVATE | MAP_DENYWRITE;
+            int elf_prot = 0;
+            unsigned long vaddr = 0;
+            if (eppnt->p_flags & PF_R) elf_prot =  PROT_READ;
+            if (eppnt->p_flags & PF_W) elf_prot |= PROT_WRITE;
+            if (eppnt->p_flags & PF_X) elf_prot |= PROT_EXEC;
+            elf_type |= MAP_FIXED;
+            vaddr = eppnt->p_vaddr;
+
+#ifdef DEBUG_ELF
+            printk("INTERP do_mmap(%p, %08lx, %08lx, %08lx, %08lx, %08lx) ",
+                   interpreter, vaddr,
+                   (unsigned long) (eppnt->p_filesz + (eppnt->p_vaddr & 0xfff)),
+                   (unsigned long) elf_prot, (unsigned long) elf_type,
+                   (unsigned long) (eppnt->p_offset & 0xfffff000));
+#endif
+            down_write(&current->mm->mmap_sem);
+            error = do_mmap(interpreter, vaddr,
+                            eppnt->p_filesz + (eppnt->p_vaddr & 0xfff),
+                            elf_prot, elf_type,
+                            eppnt->p_offset & 0xfffff000);
+            up_write(&current->mm->mmap_sem);
+
+            if(error < 0 && error > -1024) {
+                    printk("Aieee IRIX interp mmap error=%d\n", error);
+                    break;  /* Real error */
+            }
+#ifdef DEBUG_ELF
+            printk("error=%08lx ", (unsigned long) error);
+#endif
+            if(!load_addr && interp_elf_ex->e_type == ET_DYN) {
+              load_addr = error;
+#ifdef DEBUG_ELF
+              printk("load_addr = error ");
+#endif
+            }
+
+            /* Find the end of the file  mapping for this phdr, and keep
+             * track of the largest address we see for this.
+             */
+            k = eppnt->p_vaddr + eppnt->p_filesz;
+            if(k > elf_bss) elf_bss = k;
+
+            /* Do the same thing for the memory mapping - between
+             * elf_bss and last_bss is the bss section.
+             */
+            k = eppnt->p_memsz + eppnt->p_vaddr;
+            if(k > last_bss) last_bss = k;
+#ifdef DEBUG_ELF
+            printk("\n");
+#endif
+          }
+        }
+
+        /* Now use mmap to map the library into memory. */
+        if(error < 0 && error > -1024) {
+#ifdef DEBUG_ELF
+                printk("got error %d\n", error);
+#endif
+                kfree(elf_phdata);
+                return 0xffffffff;
+        }
+
+        /* Now fill out the bss section.  First pad the last page up
+         * to the page boundary, and then perform a mmap to make sure
+         * that there are zero-mapped pages up to and including the
+         * last bss page.
+         */
+#ifdef DEBUG_ELF
+        printk("padzero(%08lx) ", (unsigned long) (elf_bss));
+#endif
+        padzero(elf_bss);
+        len = (elf_bss + 0xfff) & 0xfffff000; /* What we have mapped so far */
+
+#ifdef DEBUG_ELF
+        printk("last_bss[%08lx] len[%08lx]\n", (unsigned long) last_bss,
+               (unsigned long) len);
+#endif
+
+        /* Map the last of the bss segment */
+        if (last_bss > len) {
+                down_write(&current->mm->mmap_sem);
+                do_brk(len, (last_bss - len));
+                up_write(&current->mm->mmap_sem);
+        }
+        kfree(elf_phdata);
+
+        *interp_load_addr = load_addr;
+        return ((unsigned int) interp_elf_ex->e_entry);
+}
+
+/* Check sanity of IRIX elf executable header. */
+static int verify_binary(struct elfhdr *ehp, struct linux_binprm *bprm)
+{
+        if (memcmp(ehp->e_ident, ELFMAG, SELFMAG) != 0)
+                return -ENOEXEC;
+
+        /* First of all, some simple consistency checks */
+        if((ehp->e_type != ET_EXEC && ehp->e_type != ET_DYN) ||
+            !irix_elf_check_arch(ehp) || !bprm->file->f_op->mmap) {
+                return -ENOEXEC;
+        }
+
+        /* Only support MIPS ARCH2 or greater IRIX binaries for now. */
+        if(!(ehp->e_flags & EF_MIPS_ARCH) && !(ehp->e_flags & 0x04)) {
+                return -ENOEXEC;
+        }
+
+        /* XXX Don't support N32 or 64bit binaries yet because they can
+         * XXX and do execute 64 bit instructions and expect all registers
+         * XXX to be 64 bit as well.  We need to make the kernel save
+         * XXX all registers as 64bits on cpu's capable of this at
+         * XXX exception time plus frob the XTLB exception vector.
+         */
+        if((ehp->e_flags & 0x20)) {
+                return -ENOEXEC;
+        }
+
+        return 0; /* It's ok. */
+}
+
+#define IRIX_INTERP_PREFIX "/usr/gnemul/irix"
+
+/* Look for an IRIX ELF interpreter. */
+static inline int look_for_irix_interpreter(char **name,
+                                            struct file **interpreter,
+                                            struct elfhdr *interp_elf_ex,
+                                            struct elf_phdr *epp,
+                                            struct linux_binprm *bprm, int pnum)
+{
+        int i;
+        int retval = -EINVAL;
+        struct file *file = NULL;
+
+        *name = NULL;
+        for(i = 0; i < pnum; i++, epp++) {
+                if (epp->p_type != PT_INTERP)
+                        continue;
+
+                /* It is illegal to have two interpreters for one executable. */
+                if (*name != NULL)
+                        goto out;
+
+                *name = kmalloc((epp->p_filesz + strlen(IRIX_INTERP_PREFIX)),
+                                GFP_KERNEL);
+                if (!*name)
+                        return -ENOMEM;
+
+                strcpy(*name, IRIX_INTERP_PREFIX);
+                retval = kernel_read(bprm->file, epp->p_offset, (*name + 16),
+                                     epp->p_filesz);
+                if (retval < 0)
+                        goto out;
+
+                file = open_exec(*name);
+                if (IS_ERR(file)) {
+                        retval = PTR_ERR(file);
+                        goto out;
+                }
+                retval = kernel_read(file, 0, bprm->buf, 128);
+                if (retval < 0)
+                        goto dput_and_out;
+
+                *interp_elf_ex = *(struct elfhdr *) bprm->buf;
+        }
+        *interpreter = file;
+        return 0;
+
+dput_and_out:
+        fput(file);
+out:
+        kfree(*name);
+        return retval;
+}
+
+static inline int verify_irix_interpreter(struct elfhdr *ihp)
+{
+        if (memcmp(ihp->e_ident, ELFMAG, SELFMAG) != 0)
+                return -ELIBBAD;
+        return 0;
+}
+
+#define EXEC_MAP_FLAGS (MAP_FIXED | MAP_PRIVATE | MAP_DENYWRITE | MAP_EXECUTABLE)
+
+static inline void map_executable(struct file *fp, struct elf_phdr *epp, int pnum,
+                                  unsigned int *estack, unsigned int *laddr,
+                                  unsigned int *scode, unsigned int *ebss,
+                                  unsigned int *ecode, unsigned int *edata,
+                                  unsigned int *ebrk)
+{
+        unsigned int tmp;
+        int i, prot;
+
+        for(i = 0; i < pnum; i++, epp++) {
+                if(epp->p_type != PT_LOAD)
+                        continue;
+
+                /* Map it. */
+                prot  = (epp->p_flags & PF_R) ? PROT_READ : 0;
+                prot |= (epp->p_flags & PF_W) ? PROT_WRITE : 0;
+                prot |= (epp->p_flags & PF_X) ? PROT_EXEC : 0;
+                down_write(&current->mm->mmap_sem);
+                (void) do_mmap(fp, (epp->p_vaddr & 0xfffff000),
+                               (epp->p_filesz + (epp->p_vaddr & 0xfff)),
+                               prot, EXEC_MAP_FLAGS,
+                               (epp->p_offset & 0xfffff000));
+                up_write(&current->mm->mmap_sem);
+
+                /* Fixup location tracking vars. */
+                if((epp->p_vaddr & 0xfffff000) < *estack)
+                        *estack = (epp->p_vaddr & 0xfffff000);
+                if(!*laddr)
+                        *laddr = epp->p_vaddr - epp->p_offset;
+                if(epp->p_vaddr < *scode)
+                        *scode = epp->p_vaddr;
+
+                tmp = epp->p_vaddr + epp->p_filesz;
+                if(tmp > *ebss)
+                        *ebss = tmp;
+                if((epp->p_flags & PF_X) && *ecode < tmp)
+                        *ecode = tmp;
+                if(*edata < tmp)
+                        *edata = tmp;
+
+                tmp = epp->p_vaddr + epp->p_memsz;
+                if(tmp > *ebrk)
+                        *ebrk = tmp;
+        }
+
+}
+
+static inline int map_interpreter(struct elf_phdr *epp, struct elfhdr *ihp,
+                                  struct file *interp, unsigned int *iladdr,
+                                  int pnum, mm_segment_t old_fs,
+                                  unsigned int *eentry)
+{
+        int i;
+
+        *eentry = 0xffffffff;
+        for(i = 0; i < pnum; i++, epp++) {
+                if(epp->p_type != PT_INTERP)
+                        continue;
+
+                /* We should have fielded this error elsewhere... */
+                if(*eentry != 0xffffffff)
+                        return -1;
+
+                set_fs(old_fs);
+                *eentry = load_irix_interp(ihp, interp, iladdr);
+                old_fs = get_fs();
+                set_fs(get_ds());
+
+                fput(interp);
+
+                if (*eentry == 0xffffffff)
+                        return -1;
+        }
+        return 0;
+}
+
+/*
+ * IRIX maps a page at 0x200000 that holds information about the
+ * process and the system, here we map the page and fill the
+ * structure
+ */
+void irix_map_prda_page (void)
+{
+        unsigned long v;
+        struct prda *pp;
+
+        down_write(&current->mm->mmap_sem);
+        v =  do_brk (PRDA_ADDRESS, PAGE_SIZE);
+        up_write(&current->mm->mmap_sem);
+
+        if (v < 0)
+                return;
+
+        pp = (struct prda *) v;
+        pp->prda_sys.t_pid  = current->pid;
+        pp->prda_sys.t_prid = read_c0_prid();
+        pp->prda_sys.t_rpid = current->pid;
+
+        /* We leave the rest set to zero */
+}
+
+
+
+/* These are the functions used to load ELF style executables and shared
+ * libraries.  There is no binary dependent code anywhere else.
+ */
+static int load_irix_binary(struct linux_binprm * bprm, struct pt_regs * regs)
+{
+        struct elfhdr elf_ex, interp_elf_ex;
+        struct file *interpreter;
+        struct elf_phdr *elf_phdata, *elf_ihdr, *elf_ephdr;
+        unsigned int load_addr, elf_bss, elf_brk;
+        unsigned int elf_entry, interp_load_addr = 0;
+        unsigned int start_code, end_code, end_data, elf_stack;
+        int retval, has_interp, has_ephdr, size, i;
+        char *elf_interpreter;
+        mm_segment_t old_fs;
+
+        load_addr = 0;
+        has_interp = has_ephdr = 0;
+        elf_ihdr = elf_ephdr = 0;
+        elf_ex = *((struct elfhdr *) bprm->buf);
+        retval = -ENOEXEC;
+
+        if (verify_binary(&elf_ex, bprm))
+                goto out;
+
+#ifdef DEBUG_ELF
+        print_elfhdr(&elf_ex);
+#endif
+
+        /* Now read in all of the header information */
+        size = elf_ex.e_phentsize * elf_ex.e_phnum;
+        if (size > 65536)
+                goto out;
+        elf_phdata = kmalloc(size, GFP_KERNEL);
+        if (elf_phdata == NULL) {
+                retval = -ENOMEM;
+                goto out;
+        }
+
+        retval = kernel_read(bprm->file, elf_ex.e_phoff, (char *)elf_phdata, size);
+
+        if (retval < 0)
+                goto out_free_ph;
+
+#ifdef DEBUG_ELF
+        dump_phdrs(elf_phdata, elf_ex.e_phnum);
+#endif
+
+        /* Set some things for later. */
+        for(i = 0; i < elf_ex.e_phnum; i++) {
+                switch(elf_phdata[i].p_type) {
+                case PT_INTERP:
+                        has_interp = 1;
+                        elf_ihdr = &elf_phdata[i];
+                        break;
+                case PT_PHDR:
+                        has_ephdr = 1;
+                        elf_ephdr = &elf_phdata[i];
+                        break;
+                };
+        }
+#ifdef DEBUG_ELF
+        printk("\n");
+#endif
+
+        elf_bss = 0;
+        elf_brk = 0;
+
+        elf_stack = 0xffffffff;
+        elf_interpreter = NULL;
+        start_code = 0xffffffff;
+        end_code = 0;
+        end_data = 0;
+
+        retval = look_for_irix_interpreter(&elf_interpreter,
+                                           &interpreter,
+                                           &interp_elf_ex, elf_phdata, bprm,
+                                           elf_ex.e_phnum);
+        if (retval)
+                goto out_free_file;
+
+        if (elf_interpreter) {
+                retval = verify_irix_interpreter(&interp_elf_ex);
+                if(retval)
+                        goto out_free_interp;
+        }
+
+        /* OK, we are done with that, now set up the arg stuff,
+         * and then start this sucker up.
+         */
+        retval = -E2BIG;
+        if (!bprm->sh_bang && !bprm->p)
+                goto out_free_interp;
+
+        /* Flush all traces of the currently running executable */
+        retval = flush_old_exec(bprm);
+        if (retval)
+                goto out_free_dentry;
+
+        /* OK, This is the point of no return */
+        current->mm->end_data = 0;
+        current->mm->end_code = 0;
+        current->mm->mmap = NULL;
+        current->flags &= ~PF_FORKNOEXEC;
+        elf_entry = (unsigned int) elf_ex.e_entry;
+
+        /* Do this so that we can load the interpreter, if need be.  We will
+         * change some of these later.
+         */
+        set_mm_counter(current->mm, rss, 0);
+        setup_arg_pages(bprm, STACK_TOP, EXSTACK_DEFAULT);
+        current->mm->start_stack = bprm->p;
+
+        /* At this point, we assume that the image should be loaded at
+         * fixed address, not at a variable address.
+         */
+        old_fs = get_fs();
+        set_fs(get_ds());
+
+        map_executable(bprm->file, elf_phdata, elf_ex.e_phnum, &elf_stack,
+                       &load_addr, &start_code, &elf_bss, &end_code,
+                       &end_data, &elf_brk);
+
+        if(elf_interpreter) {
+                retval = map_interpreter(elf_phdata, &interp_elf_ex,
+                                         interpreter, &interp_load_addr,
+                                         elf_ex.e_phnum, old_fs, &elf_entry);
+                kfree(elf_interpreter);
+                if(retval) {
+                        set_fs(old_fs);
+                        printk("Unable to load IRIX ELF interpreter\n");
+                        send_sig(SIGSEGV, current, 0);
+                        retval = 0;
+                        goto out_free_file;
+                }
+        }
+
+        set_fs(old_fs);
+
+        kfree(elf_phdata);
+        set_personality(PER_IRIX32);
+        set_binfmt(&irix_format);
+        compute_creds(bprm);
+        current->flags &= ~PF_FORKNOEXEC;
+        bprm->p = (unsigned long)
+          create_irix_tables((char *)bprm->p, bprm->argc, bprm->envc,
+                        (elf_interpreter ? &elf_ex : NULL),
+                        load_addr, interp_load_addr, regs, elf_ephdr);
+        current->mm->start_brk = current->mm->brk = elf_brk;
+        current->mm->end_code = end_code;
+        current->mm->start_code = start_code;
+        current->mm->end_data = end_data;
+        current->mm->start_stack = bprm->p;
+
+        /* Calling set_brk effectively mmaps the pages that we need for the
+         * bss and break sections.
+         */
+        set_brk(elf_bss, elf_brk);
+
+        /*
+         * IRIX maps a page at 0x200000 which holds some system
+         * information.  Programs depend on this.
+         */
+        irix_map_prda_page ();
+
+        padzero(elf_bss);
+
+#ifdef DEBUG_ELF
+        printk("(start_brk) %lx\n" , (long) current->mm->start_brk);
+        printk("(end_code) %lx\n" , (long) current->mm->end_code);
+        printk("(start_code) %lx\n" , (long) current->mm->start_code);
+        printk("(end_data) %lx\n" , (long) current->mm->end_data);
+        printk("(start_stack) %lx\n" , (long) current->mm->start_stack);
+        printk("(brk) %lx\n" , (long) current->mm->brk);
+#endif
+
+#if 0 /* XXX No fucking way dude... */
+        /* Why this, you ask???  Well SVr4 maps page 0 as read-only,
+         * and some applications "depend" upon this behavior.
+         * Since we do not have the power to recompile these, we
+         * emulate the SVr4 behavior.  Sigh.
+         */
+        down_write(&current->mm->mmap_sem);
+        (void) do_mmap(NULL, 0, 4096, PROT_READ | PROT_EXEC,
+                       MAP_FIXED | MAP_PRIVATE, 0);
+        up_write(&current->mm->mmap_sem);
+#endif
+
+        start_thread(regs, elf_entry, bprm->p);
+        if (current->ptrace & PT_PTRACED)
+                send_sig(SIGTRAP, current, 0);
+        return 0;
+out:
+        return retval;
+
+out_free_dentry:
+        allow_write_access(interpreter);
+        fput(interpreter);
+out_free_interp:
+        if (elf_interpreter)
+                kfree(elf_interpreter);
+out_free_file:
+out_free_ph:
+        kfree (elf_phdata);
+        goto out;
+}
+
+/* This is really simpleminded and specialized - we are loading an
+ * a.out library that is given an ELF header.
+ */
+static int load_irix_library(struct file *file)
+{
+        struct elfhdr elf_ex;
+        struct elf_phdr *elf_phdata  =  NULL;
+        unsigned int len = 0;
+        int elf_bss = 0;
+        int retval;
+        unsigned int bss;
+        int error;
+        int i,j, k;
+
+        error = kernel_read(file, 0, (char *) &elf_ex, sizeof(elf_ex));
+        if (error != sizeof(elf_ex))
+                return -ENOEXEC;
+
+        if (memcmp(elf_ex.e_ident, ELFMAG, SELFMAG) != 0)
+                return -ENOEXEC;
+
+        /* First of all, some simple consistency checks. */
+        if(elf_ex.e_type != ET_EXEC || elf_ex.e_phnum > 2 ||
+           !irix_elf_check_arch(&elf_ex) || !file->f_op->mmap)
+                return -ENOEXEC;
+
+        /* Now read in all of the header information. */
+        if(sizeof(struct elf_phdr) * elf_ex.e_phnum > PAGE_SIZE)
+                return -ENOEXEC;
+
+        elf_phdata = kmalloc(sizeof(struct elf_phdr) * elf_ex.e_phnum, GFP_KERNEL);
+        if (elf_phdata == NULL)
+                return -ENOMEM;
+
+        retval = kernel_read(file, elf_ex.e_phoff, (char *) elf_phdata,
+                           sizeof(struct elf_phdr) * elf_ex.e_phnum);
+
+        j = 0;
+        for(i=0; i<elf_ex.e_phnum; i++)
+                if((elf_phdata + i)->p_type == PT_LOAD) j++;
+
+        if(j != 1)  {
+                kfree(elf_phdata);
+                return -ENOEXEC;
+        }
+
+        while(elf_phdata->p_type != PT_LOAD) elf_phdata++;
+
+        /* Now use mmap to map the library into memory. */
+        down_write(&current->mm->mmap_sem);
+        error = do_mmap(file,
+                        elf_phdata->p_vaddr & 0xfffff000,
+                        elf_phdata->p_filesz + (elf_phdata->p_vaddr & 0xfff),
+                        PROT_READ | PROT_WRITE | PROT_EXEC,
+                        MAP_FIXED | MAP_PRIVATE | MAP_DENYWRITE,
+                        elf_phdata->p_offset & 0xfffff000);
+        up_write(&current->mm->mmap_sem);
+
+        k = elf_phdata->p_vaddr + elf_phdata->p_filesz;
+        if (k > elf_bss) elf_bss = k;
+
+        if (error != (elf_phdata->p_vaddr & 0xfffff000)) {
+                kfree(elf_phdata);
+                return error;
+        }
+
+        padzero(elf_bss);
+
+        len = (elf_phdata->p_filesz + elf_phdata->p_vaddr+ 0xfff) & 0xfffff000;
+        bss = elf_phdata->p_memsz + elf_phdata->p_vaddr;
+        if (bss > len) {
+          down_write(&current->mm->mmap_sem);
+          do_brk(len, bss-len);
+          up_write(&current->mm->mmap_sem);
+        }
+        kfree(elf_phdata);
+        return 0;
+}
+
+/* Called through irix_syssgi() to map an elf image given an FD,
+ * a phdr ptr USER_PHDRP in userspace, and a count CNT telling how many
+ * phdrs there are in the USER_PHDRP array.  We return the vaddr the
+ * first phdr was successfully mapped to.
+ */
+unsigned long irix_mapelf(int fd, struct elf_phdr *user_phdrp, int cnt)
+{
+        struct elf_phdr *hp;
+        struct file *filp;
+        int i, retval;
+
+#ifdef DEBUG_ELF
+        printk("irix_mapelf: fd[%d] user_phdrp[%p] cnt[%d]\n",
+               fd, user_phdrp, cnt);
+#endif
+
+        /* First get the verification out of the way. */
+        hp = user_phdrp;
+        if (!access_ok(VERIFY_READ, hp, (sizeof(struct elf_phdr) * cnt))) {
+#ifdef DEBUG_ELF
+                printk("irix_mapelf: access_ok fails!\n");
+#endif
+                return -EFAULT;
+        }
+
+#ifdef DEBUG_ELF
+        dump_phdrs(user_phdrp, cnt);
+#endif
+
+        for(i = 0; i < cnt; i++, hp++)
+                if(hp->p_type != PT_LOAD) {
+                        printk("irix_mapelf: One section is not PT_LOAD!\n");
+                        return -ENOEXEC;
+                }
+
+        filp = fget(fd);
+        if (!filp)
+                return -EACCES;
+        if(!filp->f_op) {
+                printk("irix_mapelf: Bogon filp!\n");
+                fput(filp);
+                return -EACCES;
+        }
+
+        hp = user_phdrp;
+        for(i = 0; i < cnt; i++, hp++) {
+                int prot;
+
+                prot  = (hp->p_flags & PF_R) ? PROT_READ : 0;
+                prot |= (hp->p_flags & PF_W) ? PROT_WRITE : 0;
+                prot |= (hp->p_flags & PF_X) ? PROT_EXEC : 0;
+                down_write(&current->mm->mmap_sem);
+                retval = do_mmap(filp, (hp->p_vaddr & 0xfffff000),
+                                 (hp->p_filesz + (hp->p_vaddr & 0xfff)),
+                                 prot, (MAP_FIXED | MAP_PRIVATE | MAP_DENYWRITE),
+                                 (hp->p_offset & 0xfffff000));
+                up_write(&current->mm->mmap_sem);
+
+                if(retval != (hp->p_vaddr & 0xfffff000)) {
+                        printk("irix_mapelf: do_mmap fails with %d!\n", retval);
+                        fput(filp);
+                        return retval;
+                }
+        }
+
+#ifdef DEBUG_ELF
+        printk("irix_mapelf: Success, returning %08lx\n",
+                (unsigned long) user_phdrp->p_vaddr);
+#endif
+        fput(filp);
+        return user_phdrp->p_vaddr;
+}
+
+/*
+ * ELF core dumper
+ *
+ * Modelled on fs/exec.c:aout_core_dump()
+ * Jeremy Fitzhardinge <jeremy@sw.oz.au>
+ */
+
+/* These are the only things you should do on a core-file: use only these
+ * functions to write out all the necessary info.
+ */
+static int dump_write(struct file *file, const void *addr, int nr)
+{
+        return file->f_op->write(file, addr, nr, &file->f_pos) == nr;
+}
+
+static int dump_seek(struct file *file, off_t off)
+{
+        if (file->f_op->llseek) {
+                if (file->f_op->llseek(file, off, 0) != off)
+                        return 0;
+        } else
+                file->f_pos = off;
+        return 1;
+}
+
+/* Decide whether a segment is worth dumping; default is yes to be
+ * sure (missing info is worse than too much; etc).
+ * Personally I'd include everything, and use the coredump limit...
+ *
+ * I think we should skip something. But I am not sure how. H.J.
+ */
+static inline int maydump(struct vm_area_struct *vma)
+{
+        if (!(vma->vm_flags & (VM_READ|VM_WRITE|VM_EXEC)))
+                return 0;
+#if 1
+        if (vma->vm_flags & (VM_WRITE|VM_GROWSUP|VM_GROWSDOWN))
+                return 1;
+        if (vma->vm_flags & (VM_READ|VM_EXEC|VM_EXECUTABLE|VM_SHARED))
+                return 0;
+#endif
+        return 1;
+}
+
+#define roundup(x, y)  ((((x)+((y)-1))/(y))*(y))
+
+/* An ELF note in memory. */
+struct memelfnote
+{
+        const char *name;
+        int type;
+        unsigned int datasz;
+        void *data;
+};
+
+static int notesize(struct memelfnote *en)
+{
+        int sz;
+
+        sz = sizeof(struct elf_note);
+        sz += roundup(strlen(en->name), 4);
+        sz += roundup(en->datasz, 4);
+
+        return sz;
+}
+
+/* #define DEBUG */
+
+#define DUMP_WRITE(addr, nr)    \
+        if (!dump_write(file, (addr), (nr))) \
+                goto end_coredump;
+#define DUMP_SEEK(off)  \
+        if (!dump_seek(file, (off))) \
+                goto end_coredump;
+
+static int writenote(struct memelfnote *men, struct file *file)
+{
+        struct elf_note en;
+
+        en.n_namesz = strlen(men->name);
+        en.n_descsz = men->datasz;
+        en.n_type = men->type;
+
+        DUMP_WRITE(&en, sizeof(en));
+        DUMP_WRITE(men->name, en.n_namesz);
+        /* XXX - cast from long long to long to avoid need for libgcc.a */
+        DUMP_SEEK(roundup((unsigned long)file->f_pos, 4));      /* XXX */
+        DUMP_WRITE(men->data, men->datasz);
+        DUMP_SEEK(roundup((unsigned long)file->f_pos, 4));      /* XXX */
+
+        return 1;
+
+end_coredump:
+        return 0;
+}
+#undef DUMP_WRITE
+#undef DUMP_SEEK
+
+#define DUMP_WRITE(addr, nr)    \
+        if (!dump_write(file, (addr), (nr))) \
+                goto end_coredump;
+#define DUMP_SEEK(off)  \
+        if (!dump_seek(file, (off))) \
+                goto end_coredump;
+
+/* Actual dumper.
+ *
+ * This is a two-pass process; first we find the offsets of the bits,
+ * and then they are actually written out.  If we run out of core limit
+ * we just truncate.
+ */
+static int irix_core_dump(long signr, struct pt_regs * regs, struct file *file)
+{
+        int has_dumped = 0;
+        mm_segment_t fs;
+        int segs;
+        int i;
+        size_t size;
+        struct vm_area_struct *vma;
+        struct elfhdr elf;
+        off_t offset = 0, dataoff;
+        int limit = current->signal->rlim[RLIMIT_CORE].rlim_cur;
+        int numnote = 4;
+        struct memelfnote notes[4];
+        struct elf_prstatus prstatus;   /* NT_PRSTATUS */
+        elf_fpregset_t fpu;             /* NT_PRFPREG */
+        struct elf_prpsinfo psinfo;     /* NT_PRPSINFO */
+
+        /* Count what's needed to dump, up to the limit of coredump size. */
+        segs = 0;
+        size = 0;
+        for(vma = current->mm->mmap; vma != NULL; vma = vma->vm_next) {
+                if (maydump(vma))
+                {
+                        int sz = vma->vm_end-vma->vm_start;
+
+                        if (size+sz >= limit)
+                                break;
+                        else
+                                size += sz;
+                }
+
+                segs++;
+        }
+#ifdef DEBUG
+        printk("irix_core_dump: %d segs taking %d bytes\n", segs, size);
+#endif
+
+        /* Set up header. */
+        memcpy(elf.e_ident, ELFMAG, SELFMAG);
+        elf.e_ident[EI_CLASS] = ELFCLASS32;
+        elf.e_ident[EI_DATA] = ELFDATA2LSB;
+        elf.e_ident[EI_VERSION] = EV_CURRENT;
+        elf.e_ident[EI_OSABI] = ELF_OSABI;
+        memset(elf.e_ident+EI_PAD, 0, EI_NIDENT-EI_PAD);
+
+        elf.e_type = ET_CORE;
+        elf.e_machine = ELF_ARCH;
+        elf.e_version = EV_CURRENT;
+        elf.e_entry = 0;
+        elf.e_phoff = sizeof(elf);
+        elf.e_shoff = 0;
+        elf.e_flags = 0;
+        elf.e_ehsize = sizeof(elf);
+        elf.e_phentsize = sizeof(struct elf_phdr);
+        elf.e_phnum = segs+1;           /* Include notes. */
+        elf.e_shentsize = 0;
+        elf.e_shnum = 0;
+        elf.e_shstrndx = 0;
+
+        fs = get_fs();
+        set_fs(KERNEL_DS);
+
+        has_dumped = 1;
+        current->flags |= PF_DUMPCORE;
+
+        DUMP_WRITE(&elf, sizeof(elf));
+        offset += sizeof(elf);                          /* Elf header. */
+        offset += (segs+1) * sizeof(struct elf_phdr);   /* Program headers. */
+
+        /* Set up the notes in similar form to SVR4 core dumps made
+         * with info from their /proc.
+         */
+        memset(&psinfo, 0, sizeof(psinfo));
+        memset(&prstatus, 0, sizeof(prstatus));
+
+        notes[0].name = "CORE";
+        notes[0].type = NT_PRSTATUS;
+        notes[0].datasz = sizeof(prstatus);
+        notes[0].data = &prstatus;
+        prstatus.pr_info.si_signo = prstatus.pr_cursig = signr;
+        prstatus.pr_sigpend = current->pending.signal.sig[0];
+        prstatus.pr_sighold = current->blocked.sig[0];
+        psinfo.pr_pid = prstatus.pr_pid = current->pid;
+        psinfo.pr_ppid = prstatus.pr_ppid = current->parent->pid;
+        psinfo.pr_pgrp = prstatus.pr_pgrp = process_group(current);
+        psinfo.pr_sid = prstatus.pr_sid = current->signal->session;
+        if (current->pid == current->tgid) {
+                /*
+                 * This is the record for the group leader.  Add in the
+                 * cumulative times of previous dead threads.  This total
+                 * won't include the time of each live thread whose state
+                 * is included in the core dump.  The final total reported
+                 * to our parent process when it calls wait4 will include
+                 * those sums as well as the little bit more time it takes
+                 * this and each other thread to finish dying after the
+                 * core dump synchronization phase.
+                 */
+                jiffies_to_timeval(current->utime + current->signal->utime,
+                                   &prstatus.pr_utime);
+                jiffies_to_timeval(current->stime + current->signal->stime,
+                                   &prstatus.pr_stime);
+        } else {
+                jiffies_to_timeval(current->utime, &prstatus.pr_utime);
+                jiffies_to_timeval(current->stime, &prstatus.pr_stime);
+        }
+        jiffies_to_timeval(current->signal->cutime, &prstatus.pr_cutime);
+        jiffies_to_timeval(current->signal->cstime, &prstatus.pr_cstime);
+
+        if (sizeof(elf_gregset_t) != sizeof(struct pt_regs)) {
+                printk("sizeof(elf_gregset_t) (%d) != sizeof(struct pt_regs) "
+                       "(%d)\n", sizeof(elf_gregset_t), sizeof(struct pt_regs));
+        } else {
+                *(struct pt_regs *)&prstatus.pr_reg = *regs;
+        }
+
+        notes[1].name = "CORE";
+        notes[1].type = NT_PRPSINFO;
+        notes[1].datasz = sizeof(psinfo);
+        notes[1].data = &psinfo;
+        i = current->state ? ffz(~current->state) + 1 : 0;
+        psinfo.pr_state = i;
+        psinfo.pr_sname = (i < 0 || i > 5) ? '.' : "RSDZTD"[i];
+        psinfo.pr_zomb = psinfo.pr_sname == 'Z';
+        psinfo.pr_nice = task_nice(current);
+        psinfo.pr_flag = current->flags;
+        psinfo.pr_uid = current->uid;
+        psinfo.pr_gid = current->gid;
+        {
+                int i, len;
+
+                set_fs(fs);
+
+                len = current->mm->arg_end - current->mm->arg_start;
+                len = len >= ELF_PRARGSZ ? ELF_PRARGSZ : len;
+                copy_from_user(&psinfo.pr_psargs,
+                               (const char *)current->mm->arg_start, len);
+                for(i = 0; i < len; i++)
+                        if (psinfo.pr_psargs[i] == 0)
+                                psinfo.pr_psargs[i] = ' ';
+                psinfo.pr_psargs[len] = 0;
+
+                set_fs(KERNEL_DS);
+        }
+        strlcpy(psinfo.pr_fname, current->comm, sizeof(psinfo.pr_fname));
+
+        notes[2].name = "CORE";
+        notes[2].type = NT_TASKSTRUCT;
+        notes[2].datasz = sizeof(*current);
+        notes[2].data = current;
+
+        /* Try to dump the FPU. */
+        prstatus.pr_fpvalid = dump_fpu (regs, &fpu);
+        if (!prstatus.pr_fpvalid) {
+                numnote--;
+        } else {
+                notes[3].name = "CORE";
+                notes[3].type = NT_PRFPREG;
+                notes[3].datasz = sizeof(fpu);
+                notes[3].data = &fpu;
+        }
+
+        /* Write notes phdr entry. */
+        {
+                struct elf_phdr phdr;
+                int sz = 0;
+
+                for(i = 0; i < numnote; i++)
+                        sz += notesize(&notes[i]);
+
+                phdr.p_type = PT_NOTE;
+                phdr.p_offset = offset;
+                phdr.p_vaddr = 0;
+                phdr.p_paddr = 0;
+                phdr.p_filesz = sz;
+                phdr.p_memsz = 0;
+                phdr.p_flags = 0;
+                phdr.p_align = 0;
+
+                offset += phdr.p_filesz;
+                DUMP_WRITE(&phdr, sizeof(phdr));
+        }
+
+        /* Page-align dumped data. */
+        dataoff = offset = roundup(offset, PAGE_SIZE);
+
+        /* Write program headers for segments dump. */
+        for(vma = current->mm->mmap, i = 0;
+                i < segs && vma != NULL; vma = vma->vm_next) {
+                struct elf_phdr phdr;
+                size_t sz;
+
+                i++;
+
+                sz = vma->vm_end - vma->vm_start;
+
+                phdr.p_type = PT_LOAD;
+                phdr.p_offset = offset;
+                phdr.p_vaddr = vma->vm_start;
+                phdr.p_paddr = 0;
+                phdr.p_filesz = maydump(vma) ? sz : 0;
+                phdr.p_memsz = sz;
+                offset += phdr.p_filesz;
+                phdr.p_flags = vma->vm_flags & VM_READ ? PF_R : 0;
+                if (vma->vm_flags & VM_WRITE) phdr.p_flags |= PF_W;
+                if (vma->vm_flags & VM_EXEC) phdr.p_flags |= PF_X;
+                phdr.p_align = PAGE_SIZE;
+
+                DUMP_WRITE(&phdr, sizeof(phdr));
+        }
+
+        for(i = 0; i < numnote; i++)
+                if (!writenote(&notes[i], file))
+                        goto end_coredump;
+
+        set_fs(fs);
+
+        DUMP_SEEK(dataoff);
+
+        for(i = 0, vma = current->mm->mmap;
+            i < segs && vma != NULL;
+            vma = vma->vm_next) {
+                unsigned long addr = vma->vm_start;
+                unsigned long len = vma->vm_end - vma->vm_start;
+
+                if (!maydump(vma))
+                        continue;
+                i++;
+#ifdef DEBUG
+                printk("elf_core_dump: writing %08lx %lx\n", addr, len);
+#endif
+                DUMP_WRITE((void *)addr, len);
+        }
+
+        if ((off_t) file->f_pos != offset) {
+                /* Sanity check. */
+                printk("elf_core_dump: file->f_pos (%ld) != offset (%ld)\n",
+                       (off_t) file->f_pos, offset);
+        }
+
+end_coredump:
+        set_fs(fs);
+        return has_dumped;
+}
+
+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);
+}
+
+static void __exit exit_irix_binfmt(void)
+{
+        /* Remove the IRIX ELF loaders. */
+        unregister_binfmt(&irix_format);
+}
+
+module_init(init_irix_binfmt)
+module_exit(exit_irix_binfmt)