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-rw-r--r--arch/ia64/ia32/sys_ia32.c2765
1 files changed, 0 insertions, 2765 deletions
diff --git a/arch/ia64/ia32/sys_ia32.c b/arch/ia64/ia32/sys_ia32.c
deleted file mode 100644
index 045b746b9808..000000000000
--- a/arch/ia64/ia32/sys_ia32.c
+++ /dev/null
@@ -1,2765 +0,0 @@
-/*
- * sys_ia32.c: Conversion between 32bit and 64bit native syscalls. Derived from sys_sparc32.c.
- *
- * Copyright (C) 2000 VA Linux Co
- * Copyright (C) 2000 Don Dugger <n0ano@valinux.com>
- * Copyright (C) 1999 Arun Sharma <arun.sharma@intel.com>
- * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
- * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
- * Copyright (C) 2000-2003, 2005 Hewlett-Packard Co
- * David Mosberger-Tang <davidm@hpl.hp.com>
- * Copyright (C) 2004 Gordon Jin <gordon.jin@intel.com>
- *
- * These routines maintain argument size conversion between 32bit and 64bit
- * environment.
- */
-
-#include <linux/kernel.h>
-#include <linux/syscalls.h>
-#include <linux/sysctl.h>
-#include <linux/sched.h>
-#include <linux/fs.h>
-#include <linux/file.h>
-#include <linux/signal.h>
-#include <linux/resource.h>
-#include <linux/times.h>
-#include <linux/utsname.h>
-#include <linux/smp.h>
-#include <linux/smp_lock.h>
-#include <linux/sem.h>
-#include <linux/msg.h>
-#include <linux/mm.h>
-#include <linux/shm.h>
-#include <linux/slab.h>
-#include <linux/uio.h>
-#include <linux/socket.h>
-#include <linux/quota.h>
-#include <linux/poll.h>
-#include <linux/eventpoll.h>
-#include <linux/personality.h>
-#include <linux/ptrace.h>
-#include <linux/regset.h>
-#include <linux/stat.h>
-#include <linux/ipc.h>
-#include <linux/capability.h>
-#include <linux/compat.h>
-#include <linux/vfs.h>
-#include <linux/mman.h>
-#include <linux/mutex.h>
-
-#include <asm/intrinsics.h>
-#include <asm/types.h>
-#include <asm/uaccess.h>
-#include <asm/unistd.h>
-
-#include "ia32priv.h"
-
-#include <net/scm.h>
-#include <net/sock.h>
-
-#define DEBUG 0
-
-#if DEBUG
-# define DBG(fmt...) printk(KERN_DEBUG fmt)
-#else
-# define DBG(fmt...)
-#endif
-
-#define ROUND_UP(x,a) ((__typeof__(x))(((unsigned long)(x) + ((a) - 1)) & ~((a) - 1)))
-
-#define OFFSET4K(a) ((a) & 0xfff)
-#define PAGE_START(addr) ((addr) & PAGE_MASK)
-#define MINSIGSTKSZ_IA32 2048
-
-#define high2lowuid(uid) ((uid) > 65535 ? 65534 : (uid))
-#define high2lowgid(gid) ((gid) > 65535 ? 65534 : (gid))
-
-/*
- * Anything that modifies or inspects ia32 user virtual memory must hold this semaphore
- * while doing so.
- */
-/* XXX make per-mm: */
-static DEFINE_MUTEX(ia32_mmap_mutex);
-
-asmlinkage long
-sys32_execve (char __user *name, compat_uptr_t __user *argv, compat_uptr_t __user *envp,
- struct pt_regs *regs)
-{
- long error;
- char *filename;
- unsigned long old_map_base, old_task_size, tssd;
-
- filename = getname(name);
- error = PTR_ERR(filename);
- if (IS_ERR(filename))
- return error;
-
- old_map_base = current->thread.map_base;
- old_task_size = current->thread.task_size;
- tssd = ia64_get_kr(IA64_KR_TSSD);
-
- /* we may be exec'ing a 64-bit process: reset map base, task-size, and io-base: */
- current->thread.map_base = DEFAULT_MAP_BASE;
- current->thread.task_size = DEFAULT_TASK_SIZE;
- ia64_set_kr(IA64_KR_IO_BASE, current->thread.old_iob);
- ia64_set_kr(IA64_KR_TSSD, current->thread.old_k1);
-
- error = compat_do_execve(filename, argv, envp, regs);
- putname(filename);
-
- if (error < 0) {
- /* oops, execve failed, switch back to old values... */
- ia64_set_kr(IA64_KR_IO_BASE, IA32_IOBASE);
- ia64_set_kr(IA64_KR_TSSD, tssd);
- current->thread.map_base = old_map_base;
- current->thread.task_size = old_task_size;
- }
-
- return error;
-}
-
-
-#if PAGE_SHIFT > IA32_PAGE_SHIFT
-
-
-static int
-get_page_prot (struct vm_area_struct *vma, unsigned long addr)
-{
- int prot = 0;
-
- if (!vma || vma->vm_start > addr)
- return 0;
-
- if (vma->vm_flags & VM_READ)
- prot |= PROT_READ;
- if (vma->vm_flags & VM_WRITE)
- prot |= PROT_WRITE;
- if (vma->vm_flags & VM_EXEC)
- prot |= PROT_EXEC;
- return prot;
-}
-
-/*
- * Map a subpage by creating an anonymous page that contains the union of the old page and
- * the subpage.
- */
-static unsigned long
-mmap_subpage (struct file *file, unsigned long start, unsigned long end, int prot, int flags,
- loff_t off)
-{
- void *page = NULL;
- struct inode *inode;
- unsigned long ret = 0;
- struct vm_area_struct *vma = find_vma(current->mm, start);
- int old_prot = get_page_prot(vma, start);
-
- DBG("mmap_subpage(file=%p,start=0x%lx,end=0x%lx,prot=%x,flags=%x,off=0x%llx)\n",
- file, start, end, prot, flags, off);
-
-
- /* Optimize the case where the old mmap and the new mmap are both anonymous */
- if ((old_prot & PROT_WRITE) && (flags & MAP_ANONYMOUS) && !vma->vm_file) {
- if (clear_user((void __user *) start, end - start)) {
- ret = -EFAULT;
- goto out;
- }
- goto skip_mmap;
- }
-
- page = (void *) get_zeroed_page(GFP_KERNEL);
- if (!page)
- return -ENOMEM;
-
- if (old_prot)
- copy_from_user(page, (void __user *) PAGE_START(start), PAGE_SIZE);
-
- down_write(&current->mm->mmap_sem);
- {
- ret = do_mmap(NULL, PAGE_START(start), PAGE_SIZE, prot | PROT_WRITE,
- flags | MAP_FIXED | MAP_ANONYMOUS, 0);
- }
- up_write(&current->mm->mmap_sem);
-
- if (IS_ERR((void *) ret))
- goto out;
-
- if (old_prot) {
- /* copy back the old page contents. */
- if (offset_in_page(start))
- copy_to_user((void __user *) PAGE_START(start), page,
- offset_in_page(start));
- if (offset_in_page(end))
- copy_to_user((void __user *) end, page + offset_in_page(end),
- PAGE_SIZE - offset_in_page(end));
- }
-
- if (!(flags & MAP_ANONYMOUS)) {
- /* read the file contents */
- inode = file->f_path.dentry->d_inode;
- if (!inode->i_fop || !file->f_op->read
- || ((*file->f_op->read)(file, (char __user *) start, end - start, &off) < 0))
- {
- ret = -EINVAL;
- goto out;
- }
- }
-
- skip_mmap:
- if (!(prot & PROT_WRITE))
- ret = sys_mprotect(PAGE_START(start), PAGE_SIZE, prot | old_prot);
- out:
- if (page)
- free_page((unsigned long) page);
- return ret;
-}
-
-/* SLAB cache for ia64_partial_page structures */
-struct kmem_cache *ia64_partial_page_cachep;
-
-/*
- * init ia64_partial_page_list.
- * return 0 means kmalloc fail.
- */
-struct ia64_partial_page_list*
-ia32_init_pp_list(void)
-{
- struct ia64_partial_page_list *p;
-
- if ((p = kmalloc(sizeof(*p), GFP_KERNEL)) == NULL)
- return p;
- p->pp_head = NULL;
- p->ppl_rb = RB_ROOT;
- p->pp_hint = NULL;
- atomic_set(&p->pp_count, 1);
- return p;
-}
-
-/*
- * Search for the partial page with @start in partial page list @ppl.
- * If finds the partial page, return the found partial page.
- * Else, return 0 and provide @pprev, @rb_link, @rb_parent to
- * be used by later __ia32_insert_pp().
- */
-static struct ia64_partial_page *
-__ia32_find_pp(struct ia64_partial_page_list *ppl, unsigned int start,
- struct ia64_partial_page **pprev, struct rb_node ***rb_link,
- struct rb_node **rb_parent)
-{
- struct ia64_partial_page *pp;
- struct rb_node **__rb_link, *__rb_parent, *rb_prev;
-
- pp = ppl->pp_hint;
- if (pp && pp->base == start)
- return pp;
-
- __rb_link = &ppl->ppl_rb.rb_node;
- rb_prev = __rb_parent = NULL;
-
- while (*__rb_link) {
- __rb_parent = *__rb_link;
- pp = rb_entry(__rb_parent, struct ia64_partial_page, pp_rb);
-
- if (pp->base == start) {
- ppl->pp_hint = pp;
- return pp;
- } else if (pp->base < start) {
- rb_prev = __rb_parent;
- __rb_link = &__rb_parent->rb_right;
- } else {
- __rb_link = &__rb_parent->rb_left;
- }
- }
-
- *rb_link = __rb_link;
- *rb_parent = __rb_parent;
- *pprev = NULL;
- if (rb_prev)
- *pprev = rb_entry(rb_prev, struct ia64_partial_page, pp_rb);
- return NULL;
-}
-
-/*
- * insert @pp into @ppl.
- */
-static void
-__ia32_insert_pp(struct ia64_partial_page_list *ppl,
- struct ia64_partial_page *pp, struct ia64_partial_page *prev,
- struct rb_node **rb_link, struct rb_node *rb_parent)
-{
- /* link list */
- if (prev) {
- pp->next = prev->next;
- prev->next = pp;
- } else {
- ppl->pp_head = pp;
- if (rb_parent)
- pp->next = rb_entry(rb_parent,
- struct ia64_partial_page, pp_rb);
- else
- pp->next = NULL;
- }
-
- /* link rb */
- rb_link_node(&pp->pp_rb, rb_parent, rb_link);
- rb_insert_color(&pp->pp_rb, &ppl->ppl_rb);
-
- ppl->pp_hint = pp;
-}
-
-/*
- * delete @pp from partial page list @ppl.
- */
-static void
-__ia32_delete_pp(struct ia64_partial_page_list *ppl,
- struct ia64_partial_page *pp, struct ia64_partial_page *prev)
-{
- if (prev) {
- prev->next = pp->next;
- if (ppl->pp_hint == pp)
- ppl->pp_hint = prev;
- } else {
- ppl->pp_head = pp->next;
- if (ppl->pp_hint == pp)
- ppl->pp_hint = pp->next;
- }
- rb_erase(&pp->pp_rb, &ppl->ppl_rb);
- kmem_cache_free(ia64_partial_page_cachep, pp);
-}
-
-static struct ia64_partial_page *
-__pp_prev(struct ia64_partial_page *pp)
-{
- struct rb_node *prev = rb_prev(&pp->pp_rb);
- if (prev)
- return rb_entry(prev, struct ia64_partial_page, pp_rb);
- else
- return NULL;
-}
-
-/*
- * Delete partial pages with address between @start and @end.
- * @start and @end are page aligned.
- */
-static void
-__ia32_delete_pp_range(unsigned int start, unsigned int end)
-{
- struct ia64_partial_page *pp, *prev;
- struct rb_node **rb_link, *rb_parent;
-
- if (start >= end)
- return;
-
- pp = __ia32_find_pp(current->thread.ppl, start, &prev,
- &rb_link, &rb_parent);
- if (pp)
- prev = __pp_prev(pp);
- else {
- if (prev)
- pp = prev->next;
- else
- pp = current->thread.ppl->pp_head;
- }
-
- while (pp && pp->base < end) {
- struct ia64_partial_page *tmp = pp->next;
- __ia32_delete_pp(current->thread.ppl, pp, prev);
- pp = tmp;
- }
-}
-
-/*
- * Set the range between @start and @end in bitmap.
- * @start and @end should be IA32 page aligned and in the same IA64 page.
- */
-static int
-__ia32_set_pp(unsigned int start, unsigned int end, int flags)
-{
- struct ia64_partial_page *pp, *prev;
- struct rb_node ** rb_link, *rb_parent;
- unsigned int pstart, start_bit, end_bit, i;
-
- pstart = PAGE_START(start);
- start_bit = (start % PAGE_SIZE) / IA32_PAGE_SIZE;
- end_bit = (end % PAGE_SIZE) / IA32_PAGE_SIZE;
- if (end_bit == 0)
- end_bit = PAGE_SIZE / IA32_PAGE_SIZE;
- pp = __ia32_find_pp(current->thread.ppl, pstart, &prev,
- &rb_link, &rb_parent);
- if (pp) {
- for (i = start_bit; i < end_bit; i++)
- set_bit(i, &pp->bitmap);
- /*
- * Check: if this partial page has been set to a full page,
- * then delete it.
- */
- if (find_first_zero_bit(&pp->bitmap, sizeof(pp->bitmap)*8) >=
- PAGE_SIZE/IA32_PAGE_SIZE) {
- __ia32_delete_pp(current->thread.ppl, pp, __pp_prev(pp));
- }
- return 0;
- }
-
- /*
- * MAP_FIXED may lead to overlapping mmap.
- * In this case, the requested mmap area may already mmaped as a full
- * page. So check vma before adding a new partial page.
- */
- if (flags & MAP_FIXED) {
- struct vm_area_struct *vma = find_vma(current->mm, pstart);
- if (vma && vma->vm_start <= pstart)
- return 0;
- }
-
- /* new a ia64_partial_page */
- pp = kmem_cache_alloc(ia64_partial_page_cachep, GFP_KERNEL);
- if (!pp)
- return -ENOMEM;
- pp->base = pstart;
- pp->bitmap = 0;
- for (i=start_bit; i<end_bit; i++)
- set_bit(i, &(pp->bitmap));
- pp->next = NULL;
- __ia32_insert_pp(current->thread.ppl, pp, prev, rb_link, rb_parent);
- return 0;
-}
-
-/*
- * @start and @end should be IA32 page aligned, but don't need to be in the
- * same IA64 page. Split @start and @end to make sure they're in the same IA64
- * page, then call __ia32_set_pp().
- */
-static void
-ia32_set_pp(unsigned int start, unsigned int end, int flags)
-{
- down_write(&current->mm->mmap_sem);
- if (flags & MAP_FIXED) {
- /*
- * MAP_FIXED may lead to overlapping mmap. When this happens,
- * a series of complete IA64 pages results in deletion of
- * old partial pages in that range.
- */
- __ia32_delete_pp_range(PAGE_ALIGN(start), PAGE_START(end));
- }
-
- if (end < PAGE_ALIGN(start)) {
- __ia32_set_pp(start, end, flags);
- } else {
- if (offset_in_page(start))
- __ia32_set_pp(start, PAGE_ALIGN(start), flags);
- if (offset_in_page(end))
- __ia32_set_pp(PAGE_START(end), end, flags);
- }
- up_write(&current->mm->mmap_sem);
-}
-
-/*
- * Unset the range between @start and @end in bitmap.
- * @start and @end should be IA32 page aligned and in the same IA64 page.
- * After doing that, if the bitmap is 0, then free the page and return 1,
- * else return 0;
- * If not find the partial page in the list, then
- * If the vma exists, then the full page is set to a partial page;
- * Else return -ENOMEM.
- */
-static int
-__ia32_unset_pp(unsigned int start, unsigned int end)
-{
- struct ia64_partial_page *pp, *prev;
- struct rb_node ** rb_link, *rb_parent;
- unsigned int pstart, start_bit, end_bit, i;
- struct vm_area_struct *vma;
-
- pstart = PAGE_START(start);
- start_bit = (start % PAGE_SIZE) / IA32_PAGE_SIZE;
- end_bit = (end % PAGE_SIZE) / IA32_PAGE_SIZE;
- if (end_bit == 0)
- end_bit = PAGE_SIZE / IA32_PAGE_SIZE;
-
- pp = __ia32_find_pp(current->thread.ppl, pstart, &prev,
- &rb_link, &rb_parent);
- if (pp) {
- for (i = start_bit; i < end_bit; i++)
- clear_bit(i, &pp->bitmap);
- if (pp->bitmap == 0) {
- __ia32_delete_pp(current->thread.ppl, pp, __pp_prev(pp));
- return 1;
- }
- return 0;
- }
-
- vma = find_vma(current->mm, pstart);
- if (!vma || vma->vm_start > pstart) {
- return -ENOMEM;
- }
-
- /* new a ia64_partial_page */
- pp = kmem_cache_alloc(ia64_partial_page_cachep, GFP_KERNEL);
- if (!pp)
- return -ENOMEM;
- pp->base = pstart;
- pp->bitmap = 0;
- for (i = 0; i < start_bit; i++)
- set_bit(i, &(pp->bitmap));
- for (i = end_bit; i < PAGE_SIZE / IA32_PAGE_SIZE; i++)
- set_bit(i, &(pp->bitmap));
- pp->next = NULL;
- __ia32_insert_pp(current->thread.ppl, pp, prev, rb_link, rb_parent);
- return 0;
-}
-
-/*
- * Delete pp between PAGE_ALIGN(start) and PAGE_START(end) by calling
- * __ia32_delete_pp_range(). Unset possible partial pages by calling
- * __ia32_unset_pp().
- * The returned value see __ia32_unset_pp().
- */
-static int
-ia32_unset_pp(unsigned int *startp, unsigned int *endp)
-{
- unsigned int start = *startp, end = *endp;
- int ret = 0;
-
- down_write(&current->mm->mmap_sem);
-
- __ia32_delete_pp_range(PAGE_ALIGN(start), PAGE_START(end));
-
- if (end < PAGE_ALIGN(start)) {
- ret = __ia32_unset_pp(start, end);
- if (ret == 1) {
- *startp = PAGE_START(start);
- *endp = PAGE_ALIGN(end);
- }
- if (ret == 0) {
- /* to shortcut sys_munmap() in sys32_munmap() */
- *startp = PAGE_START(start);
- *endp = PAGE_START(end);
- }
- } else {
- if (offset_in_page(start)) {
- ret = __ia32_unset_pp(start, PAGE_ALIGN(start));
- if (ret == 1)
- *startp = PAGE_START(start);
- if (ret == 0)
- *startp = PAGE_ALIGN(start);
- if (ret < 0)
- goto out;
- }
- if (offset_in_page(end)) {
- ret = __ia32_unset_pp(PAGE_START(end), end);
- if (ret == 1)
- *endp = PAGE_ALIGN(end);
- if (ret == 0)
- *endp = PAGE_START(end);
- }
- }
-
- out:
- up_write(&current->mm->mmap_sem);
- return ret;
-}
-
-/*
- * Compare the range between @start and @end with bitmap in partial page.
- * @start and @end should be IA32 page aligned and in the same IA64 page.
- */
-static int
-__ia32_compare_pp(unsigned int start, unsigned int end)
-{
- struct ia64_partial_page *pp, *prev;
- struct rb_node ** rb_link, *rb_parent;
- unsigned int pstart, start_bit, end_bit, size;
- unsigned int first_bit, next_zero_bit; /* the first range in bitmap */
-
- pstart = PAGE_START(start);
-
- pp = __ia32_find_pp(current->thread.ppl, pstart, &prev,
- &rb_link, &rb_parent);
- if (!pp)
- return 1;
-
- start_bit = (start % PAGE_SIZE) / IA32_PAGE_SIZE;
- end_bit = (end % PAGE_SIZE) / IA32_PAGE_SIZE;
- size = sizeof(pp->bitmap) * 8;
- first_bit = find_first_bit(&pp->bitmap, size);
- next_zero_bit = find_next_zero_bit(&pp->bitmap, size, first_bit);
- if ((start_bit < first_bit) || (end_bit > next_zero_bit)) {
- /* exceeds the first range in bitmap */
- return -ENOMEM;
- } else if ((start_bit == first_bit) && (end_bit == next_zero_bit)) {
- first_bit = find_next_bit(&pp->bitmap, size, next_zero_bit);
- if ((next_zero_bit < first_bit) && (first_bit < size))
- return 1; /* has next range */
- else
- return 0; /* no next range */
- } else
- return 1;
-}
-
-/*
- * @start and @end should be IA32 page aligned, but don't need to be in the
- * same IA64 page. Split @start and @end to make sure they're in the same IA64
- * page, then call __ia32_compare_pp().
- *
- * Take this as example: the range is the 1st and 2nd 4K page.
- * Return 0 if they fit bitmap exactly, i.e. bitmap = 00000011;
- * Return 1 if the range doesn't cover whole bitmap, e.g. bitmap = 00001111;
- * Return -ENOMEM if the range exceeds the bitmap, e.g. bitmap = 00000001 or
- * bitmap = 00000101.
- */
-static int
-ia32_compare_pp(unsigned int *startp, unsigned int *endp)
-{
- unsigned int start = *startp, end = *endp;
- int retval = 0;
-
- down_write(&current->mm->mmap_sem);
-
- if (end < PAGE_ALIGN(start)) {
- retval = __ia32_compare_pp(start, end);
- if (retval == 0) {
- *startp = PAGE_START(start);
- *endp = PAGE_ALIGN(end);
- }
- } else {
- if (offset_in_page(start)) {
- retval = __ia32_compare_pp(start,
- PAGE_ALIGN(start));
- if (retval == 0)
- *startp = PAGE_START(start);
- if (retval < 0)
- goto out;
- }
- if (offset_in_page(end)) {
- retval = __ia32_compare_pp(PAGE_START(end), end);
- if (retval == 0)
- *endp = PAGE_ALIGN(end);
- }
- }
-
- out:
- up_write(&current->mm->mmap_sem);
- return retval;
-}
-
-static void
-__ia32_drop_pp_list(struct ia64_partial_page_list *ppl)
-{
- struct ia64_partial_page *pp = ppl->pp_head;
-
- while (pp) {
- struct ia64_partial_page *next = pp->next;
- kmem_cache_free(ia64_partial_page_cachep, pp);
- pp = next;
- }
-
- kfree(ppl);
-}
-
-void
-ia32_drop_ia64_partial_page_list(struct task_struct *task)
-{
- struct ia64_partial_page_list* ppl = task->thread.ppl;
-
- if (ppl && atomic_dec_and_test(&ppl->pp_count))
- __ia32_drop_pp_list(ppl);
-}
-
-/*
- * Copy current->thread.ppl to ppl (already initialized).
- */
-static int
-__ia32_copy_pp_list(struct ia64_partial_page_list *ppl)
-{
- struct ia64_partial_page *pp, *tmp, *prev;
- struct rb_node **rb_link, *rb_parent;
-
- ppl->pp_head = NULL;
- ppl->pp_hint = NULL;
- ppl->ppl_rb = RB_ROOT;
- rb_link = &ppl->ppl_rb.rb_node;
- rb_parent = NULL;
- prev = NULL;
-
- for (pp = current->thread.ppl->pp_head; pp; pp = pp->next) {
- tmp = kmem_cache_alloc(ia64_partial_page_cachep, GFP_KERNEL);
- if (!tmp)
- return -ENOMEM;
- *tmp = *pp;
- __ia32_insert_pp(ppl, tmp, prev, rb_link, rb_parent);
- prev = tmp;
- rb_link = &tmp->pp_rb.rb_right;
- rb_parent = &tmp->pp_rb;
- }
- return 0;
-}
-
-int
-ia32_copy_ia64_partial_page_list(struct task_struct *p,
- unsigned long clone_flags)
-{
- int retval = 0;
-
- if (clone_flags & CLONE_VM) {
- atomic_inc(&current->thread.ppl->pp_count);
- p->thread.ppl = current->thread.ppl;
- } else {
- p->thread.ppl = ia32_init_pp_list();
- if (!p->thread.ppl)
- return -ENOMEM;
- down_write(&current->mm->mmap_sem);
- {
- retval = __ia32_copy_pp_list(p->thread.ppl);
- }
- up_write(&current->mm->mmap_sem);
- }
-
- return retval;
-}
-
-static unsigned long
-emulate_mmap (struct file *file, unsigned long start, unsigned long len, int prot, int flags,
- loff_t off)
-{
- unsigned long tmp, end, pend, pstart, ret, is_congruent, fudge = 0;
- struct inode *inode;
- loff_t poff;
-
- end = start + len;
- pstart = PAGE_START(start);
- pend = PAGE_ALIGN(end);
-
- if (flags & MAP_FIXED) {
- ia32_set_pp((unsigned int)start, (unsigned int)end, flags);
- if (start > pstart) {
- if (flags & MAP_SHARED)
- printk(KERN_INFO
- "%s(%d): emulate_mmap() can't share head (addr=0x%lx)\n",
- current->comm, task_pid_nr(current), start);
- ret = mmap_subpage(file, start, min(PAGE_ALIGN(start), end), prot, flags,
- off);
- if (IS_ERR((void *) ret))
- return ret;
- pstart += PAGE_SIZE;
- if (pstart >= pend)
- goto out; /* done */
- }
- if (end < pend) {
- if (flags & MAP_SHARED)
- printk(KERN_INFO
- "%s(%d): emulate_mmap() can't share tail (end=0x%lx)\n",
- current->comm, task_pid_nr(current), end);
- ret = mmap_subpage(file, max(start, PAGE_START(end)), end, prot, flags,
- (off + len) - offset_in_page(end));
- if (IS_ERR((void *) ret))
- return ret;
- pend -= PAGE_SIZE;
- if (pstart >= pend)
- goto out; /* done */
- }
- } else {
- /*
- * If a start address was specified, use it if the entire rounded out area
- * is available.
- */
- if (start && !pstart)
- fudge = 1; /* handle case of mapping to range (0,PAGE_SIZE) */
- tmp = arch_get_unmapped_area(file, pstart - fudge, pend - pstart, 0, flags);
- if (tmp != pstart) {
- pstart = tmp;
- start = pstart + offset_in_page(off); /* make start congruent with off */
- end = start + len;
- pend = PAGE_ALIGN(end);
- }
- }
-
- poff = off + (pstart - start); /* note: (pstart - start) may be negative */
- is_congruent = (flags & MAP_ANONYMOUS) || (offset_in_page(poff) == 0);
-
- if ((flags & MAP_SHARED) && !is_congruent)
- printk(KERN_INFO "%s(%d): emulate_mmap() can't share contents of incongruent mmap "
- "(addr=0x%lx,off=0x%llx)\n", current->comm, task_pid_nr(current), start, off);
-
- DBG("mmap_body: mapping [0x%lx-0x%lx) %s with poff 0x%llx\n", pstart, pend,
- is_congruent ? "congruent" : "not congruent", poff);
-
- down_write(&current->mm->mmap_sem);
- {
- if (!(flags & MAP_ANONYMOUS) && is_congruent)
- ret = do_mmap(file, pstart, pend - pstart, prot, flags | MAP_FIXED, poff);
- else
- ret = do_mmap(NULL, pstart, pend - pstart,
- prot | ((flags & MAP_ANONYMOUS) ? 0 : PROT_WRITE),
- flags | MAP_FIXED | MAP_ANONYMOUS, 0);
- }
- up_write(&current->mm->mmap_sem);
-
- if (IS_ERR((void *) ret))
- return ret;
-
- if (!is_congruent) {
- /* read the file contents */
- inode = file->f_path.dentry->d_inode;
- if (!inode->i_fop || !file->f_op->read
- || ((*file->f_op->read)(file, (char __user *) pstart, pend - pstart, &poff)
- < 0))
- {
- sys_munmap(pstart, pend - pstart);
- return -EINVAL;
- }
- if (!(prot & PROT_WRITE) && sys_mprotect(pstart, pend - pstart, prot) < 0)
- return -EINVAL;
- }
-
- if (!(flags & MAP_FIXED))
- ia32_set_pp((unsigned int)start, (unsigned int)end, flags);
-out:
- return start;
-}
-
-#endif /* PAGE_SHIFT > IA32_PAGE_SHIFT */
-
-static inline unsigned int
-get_prot32 (unsigned int prot)
-{
- if (prot & PROT_WRITE)
- /* on x86, PROT_WRITE implies PROT_READ which implies PROT_EEC */
- prot |= PROT_READ | PROT_WRITE | PROT_EXEC;
- else if (prot & (PROT_READ | PROT_EXEC))
- /* on x86, there is no distinction between PROT_READ and PROT_EXEC */
- prot |= (PROT_READ | PROT_EXEC);
-
- return prot;
-}
-
-unsigned long
-ia32_do_mmap (struct file *file, unsigned long addr, unsigned long len, int prot, int flags,
- loff_t offset)
-{
- DBG("ia32_do_mmap(file=%p,addr=0x%lx,len=0x%lx,prot=%x,flags=%x,offset=0x%llx)\n",
- file, addr, len, prot, flags, offset);
-
- if (file && (!file->f_op || !file->f_op->mmap))
- return -ENODEV;
-
- len = IA32_PAGE_ALIGN(len);
- if (len == 0)
- return addr;
-
- if (len > IA32_PAGE_OFFSET || addr > IA32_PAGE_OFFSET - len)
- {
- if (flags & MAP_FIXED)
- return -ENOMEM;
- else
- return -EINVAL;
- }
-
- if (OFFSET4K(offset))
- return -EINVAL;
-
- prot = get_prot32(prot);
-
- if (flags & MAP_HUGETLB)
- return -ENOMEM;
-
-#if PAGE_SHIFT > IA32_PAGE_SHIFT
- mutex_lock(&ia32_mmap_mutex);
- {
- addr = emulate_mmap(file, addr, len, prot, flags, offset);
- }
- mutex_unlock(&ia32_mmap_mutex);
-#else
- down_write(&current->mm->mmap_sem);
- {
- addr = do_mmap(file, addr, len, prot, flags, offset);
- }
- up_write(&current->mm->mmap_sem);
-#endif
- DBG("ia32_do_mmap: returning 0x%lx\n", addr);
- return addr;
-}
-
-/*
- * Linux/i386 didn't use to be able to handle more than 4 system call parameters, so these
- * system calls used a memory block for parameter passing..
- */
-
-struct mmap_arg_struct {
- unsigned int addr;
- unsigned int len;
- unsigned int prot;
- unsigned int flags;
- unsigned int fd;
- unsigned int offset;
-};
-
-asmlinkage long
-sys32_mmap (struct mmap_arg_struct __user *arg)
-{
- struct mmap_arg_struct a;
- struct file *file = NULL;
- unsigned long addr;
- int flags;
-
- if (copy_from_user(&a, arg, sizeof(a)))
- return -EFAULT;
-
- if (OFFSET4K(a.offset))
- return -EINVAL;
-
- flags = a.flags;
-
- flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
- if (!(flags & MAP_ANONYMOUS)) {
- file = fget(a.fd);
- if (!file)
- return -EBADF;
- }
-
- addr = ia32_do_mmap(file, a.addr, a.len, a.prot, flags, a.offset);
-
- if (file)
- fput(file);
- return addr;
-}
-
-asmlinkage long
-sys32_mmap2 (unsigned int addr, unsigned int len, unsigned int prot, unsigned int flags,
- unsigned int fd, unsigned int pgoff)
-{
- struct file *file = NULL;
- unsigned long retval;
-
- flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
- if (!(flags & MAP_ANONYMOUS)) {
- file = fget(fd);
- if (!file)
- return -EBADF;
- }
-
- retval = ia32_do_mmap(file, addr, len, prot, flags,
- (unsigned long) pgoff << IA32_PAGE_SHIFT);
-
- if (file)
- fput(file);
- return retval;
-}
-
-asmlinkage long
-sys32_munmap (unsigned int start, unsigned int len)
-{
- unsigned int end = start + len;
- long ret;
-
-#if PAGE_SHIFT <= IA32_PAGE_SHIFT
- ret = sys_munmap(start, end - start);
-#else
- if (OFFSET4K(start))
- return -EINVAL;
-
- end = IA32_PAGE_ALIGN(end);
- if (start >= end)
- return -EINVAL;
-
- ret = ia32_unset_pp(&start, &end);
- if (ret < 0)
- return ret;
-
- if (start >= end)
- return 0;
-
- mutex_lock(&ia32_mmap_mutex);
- ret = sys_munmap(start, end - start);
- mutex_unlock(&ia32_mmap_mutex);
-#endif
- return ret;
-}
-
-#if PAGE_SHIFT > IA32_PAGE_SHIFT
-
-/*
- * When mprotect()ing a partial page, we set the permission to the union of the old
- * settings and the new settings. In other words, it's only possible to make access to a
- * partial page less restrictive.
- */
-static long
-mprotect_subpage (unsigned long address, int new_prot)
-{
- int old_prot;
- struct vm_area_struct *vma;
-
- if (new_prot == PROT_NONE)
- return 0; /* optimize case where nothing changes... */
- vma = find_vma(current->mm, address);
- old_prot = get_page_prot(vma, address);
- return sys_mprotect(address, PAGE_SIZE, new_prot | old_prot);
-}
-
-#endif /* PAGE_SHIFT > IA32_PAGE_SHIFT */
-
-asmlinkage long
-sys32_mprotect (unsigned int start, unsigned int len, int prot)
-{
- unsigned int end = start + len;
-#if PAGE_SHIFT > IA32_PAGE_SHIFT
- long retval = 0;
-#endif
-
- prot = get_prot32(prot);
-
-#if PAGE_SHIFT <= IA32_PAGE_SHIFT
- return sys_mprotect(start, end - start, prot);
-#else
- if (OFFSET4K(start))
- return -EINVAL;
-
- end = IA32_PAGE_ALIGN(end);
- if (end < start)
- return -EINVAL;
-
- retval = ia32_compare_pp(&start, &end);
-
- if (retval < 0)
- return retval;
-
- mutex_lock(&ia32_mmap_mutex);
- {
- if (offset_in_page(start)) {
- /* start address is 4KB aligned but not page aligned. */
- retval = mprotect_subpage(PAGE_START(start), prot);
- if (retval < 0)
- goto out;
-
- start = PAGE_ALIGN(start);
- if (start >= end)
- goto out; /* retval is already zero... */
- }
-
- if (offset_in_page(end)) {
- /* end address is 4KB aligned but not page aligned. */
- retval = mprotect_subpage(PAGE_START(end), prot);
- if (retval < 0)
- goto out;
-
- end = PAGE_START(end);
- }
- retval = sys_mprotect(start, end - start, prot);
- }
- out:
- mutex_unlock(&ia32_mmap_mutex);
- return retval;
-#endif
-}
-
-asmlinkage long
-sys32_mremap (unsigned int addr, unsigned int old_len, unsigned int new_len,
- unsigned int flags, unsigned int new_addr)
-{
- long ret;
-
-#if PAGE_SHIFT <= IA32_PAGE_SHIFT
- ret = sys_mremap(addr, old_len, new_len, flags, new_addr);
-#else
- unsigned int old_end, new_end;
-
- if (OFFSET4K(addr))
- return -EINVAL;
-
- old_len = IA32_PAGE_ALIGN(old_len);
- new_len = IA32_PAGE_ALIGN(new_len);
- old_end = addr + old_len;
- new_end = addr + new_len;
-
- if (!new_len)
- return -EINVAL;
-
- if ((flags & MREMAP_FIXED) && (OFFSET4K(new_addr)))
- return -EINVAL;
-
- if (old_len >= new_len) {
- ret = sys32_munmap(addr + new_len, old_len - new_len);
- if (ret && old_len != new_len)
- return ret;
- ret = addr;
- if (!(flags & MREMAP_FIXED) || (new_addr == addr))
- return ret;
- old_len = new_len;
- }
-
- addr = PAGE_START(addr);
- old_len = PAGE_ALIGN(old_end) - addr;
- new_len = PAGE_ALIGN(new_end) - addr;
-
- mutex_lock(&ia32_mmap_mutex);
- ret = sys_mremap(addr, old_len, new_len, flags, new_addr);
- mutex_unlock(&ia32_mmap_mutex);
-
- if ((ret >= 0) && (old_len < new_len)) {
- /* mremap expanded successfully */
- ia32_set_pp(old_end, new_end, flags);
- }
-#endif
- return ret;
-}
-
-asmlinkage unsigned long
-sys32_alarm (unsigned int seconds)
-{
- return alarm_setitimer(seconds);
-}
-
-struct sel_arg_struct {
- unsigned int n;
- unsigned int inp;
- unsigned int outp;
- unsigned int exp;
- unsigned int tvp;
-};
-
-asmlinkage long
-sys32_old_select (struct sel_arg_struct __user *arg)
-{
- struct sel_arg_struct a;
-
- if (copy_from_user(&a, arg, sizeof(a)))
- return -EFAULT;
- return compat_sys_select(a.n, compat_ptr(a.inp), compat_ptr(a.outp),
- compat_ptr(a.exp), compat_ptr(a.tvp));
-}
-
-#define SEMOP 1
-#define SEMGET 2
-#define SEMCTL 3
-#define SEMTIMEDOP 4
-#define MSGSND 11
-#define MSGRCV 12
-#define MSGGET 13
-#define MSGCTL 14
-#define SHMAT 21
-#define SHMDT 22
-#define SHMGET 23
-#define SHMCTL 24
-
-asmlinkage long
-sys32_ipc(u32 call, int first, int second, int third, u32 ptr, u32 fifth)
-{
- int version;
-
- version = call >> 16; /* hack for backward compatibility */
- call &= 0xffff;
-
- switch (call) {
- case SEMTIMEDOP:
- if (fifth)
- return compat_sys_semtimedop(first, compat_ptr(ptr),
- second, compat_ptr(fifth));
- /* else fall through for normal semop() */
- case SEMOP:
- /* struct sembuf is the same on 32 and 64bit :)) */
- return sys_semtimedop(first, compat_ptr(ptr), second,
- NULL);
- case SEMGET:
- return sys_semget(first, second, third);
- case SEMCTL:
- return compat_sys_semctl(first, second, third, compat_ptr(ptr));
-
- case MSGSND:
- return compat_sys_msgsnd(first, second, third, compat_ptr(ptr));
- case MSGRCV:
- return compat_sys_msgrcv(first, second, fifth, third, version, compat_ptr(ptr));
- case MSGGET:
- return sys_msgget((key_t) first, second);
- case MSGCTL:
- return compat_sys_msgctl(first, second, compat_ptr(ptr));
-
- case SHMAT:
- return compat_sys_shmat(first, second, third, version, compat_ptr(ptr));
- break;
- case SHMDT:
- return sys_shmdt(compat_ptr(ptr));
- case SHMGET:
- return sys_shmget(first, (unsigned)second, third);
- case SHMCTL:
- return compat_sys_shmctl(first, second, compat_ptr(ptr));
-
- default:
- return -ENOSYS;
- }
- return -EINVAL;
-}
-
-asmlinkage long
-compat_sys_wait4 (compat_pid_t pid, compat_uint_t * stat_addr, int options,
- struct compat_rusage *ru);
-
-asmlinkage long
-sys32_waitpid (int pid, unsigned int *stat_addr, int options)
-{
- return compat_sys_wait4(pid, stat_addr, options, NULL);
-}
-
-/*
- * The order in which registers are stored in the ptrace regs structure
- */
-#define PT_EBX 0
-#define PT_ECX 1
-#define PT_EDX 2
-#define PT_ESI 3
-#define PT_EDI 4
-#define PT_EBP 5
-#define PT_EAX 6
-#define PT_DS 7
-#define PT_ES 8
-#define PT_FS 9
-#define PT_GS 10
-#define PT_ORIG_EAX 11
-#define PT_EIP 12
-#define PT_CS 13
-#define PT_EFL 14
-#define PT_UESP 15
-#define PT_SS 16
-
-static unsigned int
-getreg (struct task_struct *child, int regno)
-{
- struct pt_regs *child_regs;
-
- child_regs = task_pt_regs(child);
- switch (regno / sizeof(int)) {
- case PT_EBX: return child_regs->r11;
- case PT_ECX: return child_regs->r9;
- case PT_EDX: return child_regs->r10;
- case PT_ESI: return child_regs->r14;
- case PT_EDI: return child_regs->r15;
- case PT_EBP: return child_regs->r13;
- case PT_EAX: return child_regs->r8;
- case PT_ORIG_EAX: return child_regs->r1; /* see dispatch_to_ia32_handler() */
- case PT_EIP: return child_regs->cr_iip;
- case PT_UESP: return child_regs->r12;
- case PT_EFL: return child->thread.eflag;
- case PT_DS: case PT_ES: case PT_FS: case PT_GS: case PT_SS:
- return __USER_DS;
- case PT_CS: return __USER_CS;
- default:
- printk(KERN_ERR "ia32.getreg(): unknown register %d\n", regno);
- break;
- }
- return 0;
-}
-
-static void
-putreg (struct task_struct *child, int regno, unsigned int value)
-{
- struct pt_regs *child_regs;
-
- child_regs = task_pt_regs(child);
- switch (regno / sizeof(int)) {
- case PT_EBX: child_regs->r11 = value; break;
- case PT_ECX: child_regs->r9 = value; break;
- case PT_EDX: child_regs->r10 = value; break;
- case PT_ESI: child_regs->r14 = value; break;
- case PT_EDI: child_regs->r15 = value; break;
- case PT_EBP: child_regs->r13 = value; break;
- case PT_EAX: child_regs->r8 = value; break;
- case PT_ORIG_EAX: child_regs->r1 = value; break;
- case PT_EIP: child_regs->cr_iip = value; break;
- case PT_UESP: child_regs->r12 = value; break;
- case PT_EFL: child->thread.eflag = value; break;
- case PT_DS: case PT_ES: case PT_FS: case PT_GS: case PT_SS:
- if (value != __USER_DS)
- printk(KERN_ERR
- "ia32.putreg: attempt to set invalid segment register %d = %x\n",
- regno, value);
- break;
- case PT_CS:
- if (value != __USER_CS)
- printk(KERN_ERR
- "ia32.putreg: attempt to set invalid segment register %d = %x\n",
- regno, value);
- break;
- default:
- printk(KERN_ERR "ia32.putreg: unknown register %d\n", regno);
- break;
- }
-}
-
-static void
-put_fpreg (int regno, struct _fpreg_ia32 __user *reg, struct pt_regs *ptp,
- struct switch_stack *swp, int tos)
-{
- struct _fpreg_ia32 *f;
- char buf[32];
-
- f = (struct _fpreg_ia32 *)(((unsigned long)buf + 15) & ~15);
- if ((regno += tos) >= 8)
- regno -= 8;
- switch (regno) {
- case 0:
- ia64f2ia32f(f, &ptp->f8);
- break;
- case 1:
- ia64f2ia32f(f, &ptp->f9);
- break;
- case 2:
- ia64f2ia32f(f, &ptp->f10);
- break;
- case 3:
- ia64f2ia32f(f, &ptp->f11);
- break;
- case 4:
- case 5:
- case 6:
- case 7:
- ia64f2ia32f(f, &swp->f12 + (regno - 4));
- break;
- }
- copy_to_user(reg, f, sizeof(*reg));
-}
-
-static void
-get_fpreg (int regno, struct _fpreg_ia32 __user *reg, struct pt_regs *ptp,
- struct switch_stack *swp, int tos)
-{
-
- if ((regno += tos) >= 8)
- regno -= 8;
- switch (regno) {
- case 0:
- copy_from_user(&ptp->f8, reg, sizeof(*reg));
- break;
- case 1:
- copy_from_user(&ptp->f9, reg, sizeof(*reg));
- break;
- case 2:
- copy_from_user(&ptp->f10, reg, sizeof(*reg));
- break;
- case 3:
- copy_from_user(&ptp->f11, reg, sizeof(*reg));
- break;
- case 4:
- case 5:
- case 6:
- case 7:
- copy_from_user(&swp->f12 + (regno - 4), reg, sizeof(*reg));
- break;
- }
- return;
-}
-
-int
-save_ia32_fpstate (struct task_struct *tsk, struct ia32_user_i387_struct __user *save)
-{
- struct switch_stack *swp;
- struct pt_regs *ptp;
- int i, tos;
-
- if (!access_ok(VERIFY_WRITE, save, sizeof(*save)))
- return -EFAULT;
-
- __put_user(tsk->thread.fcr & 0xffff, &save->cwd);
- __put_user(tsk->thread.fsr & 0xffff, &save->swd);
- __put_user((tsk->thread.fsr>>16) & 0xffff, &save->twd);
- __put_user(tsk->thread.fir, &save->fip);
- __put_user((tsk->thread.fir>>32) & 0xffff, &save->fcs);
- __put_user(tsk->thread.fdr, &save->foo);
- __put_user((tsk->thread.fdr>>32) & 0xffff, &save->fos);
-
- /*
- * Stack frames start with 16-bytes of temp space
- */
- swp = (struct switch_stack *)(tsk->thread.ksp + 16);
- ptp = task_pt_regs(tsk);
- tos = (tsk->thread.fsr >> 11) & 7;
- for (i = 0; i < 8; i++)
- put_fpreg(i, &save->st_space[i], ptp, swp, tos);
- return 0;
-}
-
-static int
-restore_ia32_fpstate (struct task_struct *tsk, struct ia32_user_i387_struct __user *save)
-{
- struct switch_stack *swp;
- struct pt_regs *ptp;
- int i, tos;
- unsigned int fsrlo, fsrhi, num32;
-
- if (!access_ok(VERIFY_READ, save, sizeof(*save)))
- return(-EFAULT);
-
- __get_user(num32, (unsigned int __user *)&save->cwd);
- tsk->thread.fcr = (tsk->thread.fcr & (~0x1f3f)) | (num32 & 0x1f3f);
- __get_user(fsrlo, (unsigned int __user *)&save->swd);
- __get_user(fsrhi, (unsigned int __user *)&save->twd);
- num32 = (fsrhi << 16) | fsrlo;
- tsk->thread.fsr = (tsk->thread.fsr & (~0xffffffff)) | num32;
- __get_user(num32, (unsigned int __user *)&save->fip);
- tsk->thread.fir = (tsk->thread.fir & (~0xffffffff)) | num32;
- __get_user(num32, (unsigned int __user *)&save->foo);
- tsk->thread.fdr = (tsk->thread.fdr & (~0xffffffff)) | num32;
-
- /*
- * Stack frames start with 16-bytes of temp space
- */
- swp = (struct switch_stack *)(tsk->thread.ksp + 16);
- ptp = task_pt_regs(tsk);
- tos = (tsk->thread.fsr >> 11) & 7;
- for (i = 0; i < 8; i++)
- get_fpreg(i, &save->st_space[i], ptp, swp, tos);
- return 0;
-}
-
-int
-save_ia32_fpxstate (struct task_struct *tsk, struct ia32_user_fxsr_struct __user *save)
-{
- struct switch_stack *swp;
- struct pt_regs *ptp;
- int i, tos;
- unsigned long mxcsr=0;
- unsigned long num128[2];
-
- if (!access_ok(VERIFY_WRITE, save, sizeof(*save)))
- return -EFAULT;
-
- __put_user(tsk->thread.fcr & 0xffff, &save->cwd);
- __put_user(tsk->thread.fsr & 0xffff, &save->swd);
- __put_user((tsk->thread.fsr>>16) & 0xffff, &save->twd);
- __put_user(tsk->thread.fir, &save->fip);
- __put_user((tsk->thread.fir>>32) & 0xffff, &save->fcs);
- __put_user(tsk->thread.fdr, &save->foo);
- __put_user((tsk->thread.fdr>>32) & 0xffff, &save->fos);
-
- /*
- * Stack frames start with 16-bytes of temp space
- */
- swp = (struct switch_stack *)(tsk->thread.ksp + 16);
- ptp = task_pt_regs(tsk);
- tos = (tsk->thread.fsr >> 11) & 7;
- for (i = 0; i < 8; i++)
- put_fpreg(i, (struct _fpreg_ia32 __user *)&save->st_space[4*i], ptp, swp, tos);
-
- mxcsr = ((tsk->thread.fcr>>32) & 0xff80) | ((tsk->thread.fsr>>32) & 0x3f);
- __put_user(mxcsr & 0xffff, &save->mxcsr);
- for (i = 0; i < 8; i++) {
- memcpy(&(num128[0]), &(swp->f16) + i*2, sizeof(unsigned long));
- memcpy(&(num128[1]), &(swp->f17) + i*2, sizeof(unsigned long));
- copy_to_user(&save->xmm_space[0] + 4*i, num128, sizeof(struct _xmmreg_ia32));
- }
- return 0;
-}
-
-static int
-restore_ia32_fpxstate (struct task_struct *tsk, struct ia32_user_fxsr_struct __user *save)
-{
- struct switch_stack *swp;
- struct pt_regs *ptp;
- int i, tos;
- unsigned int fsrlo, fsrhi, num32;
- int mxcsr;
- unsigned long num64;
- unsigned long num128[2];
-
- if (!access_ok(VERIFY_READ, save, sizeof(*save)))
- return(-EFAULT);
-
- __get_user(num32, (unsigned int __user *)&save->cwd);
- tsk->thread.fcr = (tsk->thread.fcr & (~0x1f3f)) | (num32 & 0x1f3f);
- __get_user(fsrlo, (unsigned int __user *)&save->swd);
- __get_user(fsrhi, (unsigned int __user *)&save->twd);
- num32 = (fsrhi << 16) | fsrlo;
- tsk->thread.fsr = (tsk->thread.fsr & (~0xffffffff)) | num32;
- __get_user(num32, (unsigned int __user *)&save->fip);
- tsk->thread.fir = (tsk->thread.fir & (~0xffffffff)) | num32;
- __get_user(num32, (unsigned int __user *)&save->foo);
- tsk->thread.fdr = (tsk->thread.fdr & (~0xffffffff)) | num32;
-
- /*
- * Stack frames start with 16-bytes of temp space
- */
- swp = (struct switch_stack *)(tsk->thread.ksp + 16);
- ptp = task_pt_regs(tsk);
- tos = (tsk->thread.fsr >> 11) & 7;
- for (i = 0; i < 8; i++)
- get_fpreg(i, (struct _fpreg_ia32 __user *)&save->st_space[4*i], ptp, swp, tos);
-
- __get_user(mxcsr, (unsigned int __user *)&save->mxcsr);
- num64 = mxcsr & 0xff10;
- tsk->thread.fcr = (tsk->thread.fcr & (~0xff1000000000UL)) | (num64<<32);
- num64 = mxcsr & 0x3f;
- tsk->thread.fsr = (tsk->thread.fsr & (~0x3f00000000UL)) | (num64<<32);
-
- for (i = 0; i < 8; i++) {
- copy_from_user(num128, &save->xmm_space[0] + 4*i, sizeof(struct _xmmreg_ia32));
- memcpy(&(swp->f16) + i*2, &(num128[0]), sizeof(unsigned long));
- memcpy(&(swp->f17) + i*2, &(num128[1]), sizeof(unsigned long));
- }
- return 0;
-}
-
-long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
- compat_ulong_t caddr, compat_ulong_t cdata)
-{
- unsigned long addr = caddr;
- unsigned long data = cdata;
- unsigned int tmp;
- long i, ret;
-
- switch (request) {
- case PTRACE_PEEKUSR: /* read word at addr in USER area */
- ret = -EIO;
- if ((addr & 3) || addr > 17*sizeof(int))
- break;
-
- tmp = getreg(child, addr);
- if (!put_user(tmp, (unsigned int __user *) compat_ptr(data)))
- ret = 0;
- break;
-
- case PTRACE_POKEUSR: /* write word at addr in USER area */
- ret = -EIO;
- if ((addr & 3) || addr > 17*sizeof(int))
- break;
-
- putreg(child, addr, data);
- ret = 0;
- break;
-
- case IA32_PTRACE_GETREGS:
- if (!access_ok(VERIFY_WRITE, compat_ptr(data), 17*sizeof(int))) {
- ret = -EIO;
- break;
- }
- for (i = 0; i < (int) (17*sizeof(int)); i += sizeof(int) ) {
- put_user(getreg(child, i), (unsigned int __user *) compat_ptr(data));
- data += sizeof(int);
- }
- ret = 0;
- break;
-
- case IA32_PTRACE_SETREGS:
- if (!access_ok(VERIFY_READ, compat_ptr(data), 17*sizeof(int))) {
- ret = -EIO;
- break;
- }
- for (i = 0; i < (int) (17*sizeof(int)); i += sizeof(int) ) {
- get_user(tmp, (unsigned int __user *) compat_ptr(data));
- putreg(child, i, tmp);
- data += sizeof(int);
- }
- ret = 0;
- break;
-
- case IA32_PTRACE_GETFPREGS:
- ret = save_ia32_fpstate(child, (struct ia32_user_i387_struct __user *)
- compat_ptr(data));
- break;
-
- case IA32_PTRACE_GETFPXREGS:
- ret = save_ia32_fpxstate(child, (struct ia32_user_fxsr_struct __user *)
- compat_ptr(data));
- break;
-
- case IA32_PTRACE_SETFPREGS:
- ret = restore_ia32_fpstate(child, (struct ia32_user_i387_struct __user *)
- compat_ptr(data));
- break;
-
- case IA32_PTRACE_SETFPXREGS:
- ret = restore_ia32_fpxstate(child, (struct ia32_user_fxsr_struct __user *)
- compat_ptr(data));
- break;
-
- default:
- return compat_ptrace_request(child, request, caddr, cdata);
- }
- return ret;
-}
-
-typedef struct {
- unsigned int ss_sp;
- unsigned int ss_flags;
- unsigned int ss_size;
-} ia32_stack_t;
-
-asmlinkage long
-sys32_sigaltstack (ia32_stack_t __user *uss32, ia32_stack_t __user *uoss32,
- long arg2, long arg3, long arg4, long arg5, long arg6,
- long arg7, struct pt_regs pt)
-{
- stack_t uss, uoss;
- ia32_stack_t buf32;
- int ret;
- mm_segment_t old_fs = get_fs();
-
- if (uss32) {
- if (copy_from_user(&buf32, uss32, sizeof(ia32_stack_t)))
- return -EFAULT;
- uss.ss_sp = (void __user *) (long) buf32.ss_sp;
- uss.ss_flags = buf32.ss_flags;
- /* MINSIGSTKSZ is different for ia32 vs ia64. We lie here to pass the
- check and set it to the user requested value later */
- if ((buf32.ss_flags != SS_DISABLE) && (buf32.ss_size < MINSIGSTKSZ_IA32)) {
- ret = -ENOMEM;
- goto out;
- }
- uss.ss_size = MINSIGSTKSZ;
- }
- set_fs(KERNEL_DS);
- ret = do_sigaltstack(uss32 ? (stack_t __user *) &uss : NULL,
- (stack_t __user *) &uoss, pt.r12);
- current->sas_ss_size = buf32.ss_size;
- set_fs(old_fs);
-out:
- if (ret < 0)
- return(ret);
- if (uoss32) {
- buf32.ss_sp = (long __user) uoss.ss_sp;
- buf32.ss_flags = uoss.ss_flags;
- buf32.ss_size = uoss.ss_size;
- if (copy_to_user(uoss32, &buf32, sizeof(ia32_stack_t)))
- return -EFAULT;
- }
- return ret;
-}
-
-asmlinkage int
-sys32_msync (unsigned int start, unsigned int len, int flags)
-{
- unsigned int addr;
-
- if (OFFSET4K(start))
- return -EINVAL;
- addr = PAGE_START(start);
- return sys_msync(addr, len + (start - addr), flags);
-}
-
-asmlinkage long
-sys32_newuname (struct new_utsname __user *name)
-{
- int ret = sys_newuname(name);
-
- if (!ret)
- if (copy_to_user(name->machine, "i686\0\0\0", 8))
- ret = -EFAULT;
- return ret;
-}
-
-asmlinkage long
-sys32_getresuid16 (u16 __user *ruid, u16 __user *euid, u16 __user *suid)
-{
- uid_t a, b, c;
- int ret;
- mm_segment_t old_fs = get_fs();
-
- set_fs(KERNEL_DS);
- ret = sys_getresuid((uid_t __user *) &a, (uid_t __user *) &b, (uid_t __user *) &c);
- set_fs(old_fs);
-
- if (put_user(a, ruid) || put_user(b, euid) || put_user(c, suid))
- return -EFAULT;
- return ret;
-}
-
-asmlinkage long
-sys32_getresgid16 (u16 __user *rgid, u16 __user *egid, u16 __user *sgid)
-{
- gid_t a, b, c;
- int ret;
- mm_segment_t old_fs = get_fs();
-
- set_fs(KERNEL_DS);
- ret = sys_getresgid((gid_t __user *) &a, (gid_t __user *) &b, (gid_t __user *) &c);
- set_fs(old_fs);
-
- if (ret)
- return ret;
-
- return put_user(a, rgid) | put_user(b, egid) | put_user(c, sgid);
-}
-
-asmlinkage long
-sys32_lseek (unsigned int fd, int offset, unsigned int whence)
-{
- /* Sign-extension of "offset" is important here... */
- return sys_lseek(fd, offset, whence);
-}
-
-static int
-groups16_to_user(short __user *grouplist, struct group_info *group_info)
-{
- int i;
- short group;
-
- for (i = 0; i < group_info->ngroups; i++) {
- group = (short)GROUP_AT(group_info, i);
- if (put_user(group, grouplist+i))
- return -EFAULT;
- }
-
- return 0;
-}
-
-static int
-groups16_from_user(struct group_info *group_info, short __user *grouplist)
-{
- int i;
- short group;
-
- for (i = 0; i < group_info->ngroups; i++) {
- if (get_user(group, grouplist+i))
- return -EFAULT;
- GROUP_AT(group_info, i) = (gid_t)group;
- }
-
- return 0;
-}
-
-asmlinkage long
-sys32_getgroups16 (int gidsetsize, short __user *grouplist)
-{
- const struct cred *cred = current_cred();
- int i;
-
- if (gidsetsize < 0)
- return -EINVAL;
-
- i = cred->group_info->ngroups;
- if (gidsetsize) {
- if (i > gidsetsize) {
- i = -EINVAL;
- goto out;
- }
- if (groups16_to_user(grouplist, cred->group_info)) {
- i = -EFAULT;
- goto out;
- }
- }
-out:
- return i;
-}
-
-asmlinkage long
-sys32_setgroups16 (int gidsetsize, short __user *grouplist)
-{
- struct group_info *group_info;
- int retval;
-
- if (!capable(CAP_SETGID))
- return -EPERM;
- if ((unsigned)gidsetsize > NGROUPS_MAX)
- return -EINVAL;
-
- group_info = groups_alloc(gidsetsize);
- if (!group_info)
- return -ENOMEM;
- retval = groups16_from_user(group_info, grouplist);
- if (retval) {
- put_group_info(group_info);
- return retval;
- }
-
- retval = set_current_groups(group_info);
- put_group_info(group_info);
-
- return retval;
-}
-
-asmlinkage long
-sys32_truncate64 (unsigned int path, unsigned int len_lo, unsigned int len_hi)
-{
- return sys_truncate(compat_ptr(path), ((unsigned long) len_hi << 32) | len_lo);
-}
-
-asmlinkage long
-sys32_ftruncate64 (int fd, unsigned int len_lo, unsigned int len_hi)
-{
- return sys_ftruncate(fd, ((unsigned long) len_hi << 32) | len_lo);
-}
-
-static int
-putstat64 (struct stat64 __user *ubuf, struct kstat *kbuf)
-{
- int err;
- u64 hdev;
-
- if (clear_user(ubuf, sizeof(*ubuf)))
- return -EFAULT;
-
- hdev = huge_encode_dev(kbuf->dev);
- err = __put_user(hdev, (u32 __user*)&ubuf->st_dev);
- err |= __put_user(hdev >> 32, ((u32 __user*)&ubuf->st_dev) + 1);
- err |= __put_user(kbuf->ino, &ubuf->__st_ino);
- err |= __put_user(kbuf->ino, &ubuf->st_ino_lo);
- err |= __put_user(kbuf->ino >> 32, &ubuf->st_ino_hi);
- err |= __put_user(kbuf->mode, &ubuf->st_mode);
- err |= __put_user(kbuf->nlink, &ubuf->st_nlink);
- err |= __put_user(kbuf->uid, &ubuf->st_uid);
- err |= __put_user(kbuf->gid, &ubuf->st_gid);
- hdev = huge_encode_dev(kbuf->rdev);
- err = __put_user(hdev, (u32 __user*)&ubuf->st_rdev);
- err |= __put_user(hdev >> 32, ((u32 __user*)&ubuf->st_rdev) + 1);
- err |= __put_user(kbuf->size, &ubuf->st_size_lo);
- err |= __put_user((kbuf->size >> 32), &ubuf->st_size_hi);
- err |= __put_user(kbuf->atime.tv_sec, &ubuf->st_atime);
- err |= __put_user(kbuf->atime.tv_nsec, &ubuf->st_atime_nsec);
- err |= __put_user(kbuf->mtime.tv_sec, &ubuf->st_mtime);
- err |= __put_user(kbuf->mtime.tv_nsec, &ubuf->st_mtime_nsec);
- err |= __put_user(kbuf->ctime.tv_sec, &ubuf->st_ctime);
- err |= __put_user(kbuf->ctime.tv_nsec, &ubuf->st_ctime_nsec);
- err |= __put_user(kbuf->blksize, &ubuf->st_blksize);
- err |= __put_user(kbuf->blocks, &ubuf->st_blocks);
- return err;
-}
-
-asmlinkage long
-sys32_stat64 (char __user *filename, struct stat64 __user *statbuf)
-{
- struct kstat s;
- long ret = vfs_stat(filename, &s);
- if (!ret)
- ret = putstat64(statbuf, &s);
- return ret;
-}
-
-asmlinkage long
-sys32_lstat64 (char __user *filename, struct stat64 __user *statbuf)
-{
- struct kstat s;
- long ret = vfs_lstat(filename, &s);
- if (!ret)
- ret = putstat64(statbuf, &s);
- return ret;
-}
-
-asmlinkage long
-sys32_fstat64 (unsigned int fd, struct stat64 __user *statbuf)
-{
- struct kstat s;
- long ret = vfs_fstat(fd, &s);
- if (!ret)
- ret = putstat64(statbuf, &s);
- return ret;
-}
-
-asmlinkage long
-sys32_sched_rr_get_interval (pid_t pid, struct compat_timespec __user *interval)
-{
- mm_segment_t old_fs = get_fs();
- struct timespec t;
- long ret;
-
- set_fs(KERNEL_DS);
- ret = sys_sched_rr_get_interval(pid, (struct timespec __user *) &t);
- set_fs(old_fs);
- if (put_compat_timespec(&t, interval))
- return -EFAULT;
- return ret;
-}
-
-asmlinkage long
-sys32_pread (unsigned int fd, void __user *buf, unsigned int count, u32 pos_lo, u32 pos_hi)
-{
- return sys_pread64(fd, buf, count, ((unsigned long) pos_hi << 32) | pos_lo);
-}
-
-asmlinkage long
-sys32_pwrite (unsigned int fd, void __user *buf, unsigned int count, u32 pos_lo, u32 pos_hi)
-{
- return sys_pwrite64(fd, buf, count, ((unsigned long) pos_hi << 32) | pos_lo);
-}
-
-asmlinkage long
-sys32_sendfile (int out_fd, int in_fd, int __user *offset, unsigned int count)
-{
- mm_segment_t old_fs = get_fs();
- long ret;
- off_t of;
-
- if (offset && get_user(of, offset))
- return -EFAULT;
-
- set_fs(KERNEL_DS);
- ret = sys_sendfile(out_fd, in_fd, offset ? (off_t __user *) &of : NULL, count);
- set_fs(old_fs);
-
- if (offset && put_user(of, offset))
- return -EFAULT;
-
- return ret;
-}
-
-asmlinkage long
-sys32_personality (unsigned int personality)
-{
- long ret;
-
- if (current->personality == PER_LINUX32 && personality == PER_LINUX)
- personality = PER_LINUX32;
- ret = sys_personality(personality);
- if (ret == PER_LINUX32)
- ret = PER_LINUX;
- return ret;
-}
-
-asmlinkage unsigned long
-sys32_brk (unsigned int brk)
-{
- unsigned long ret, obrk;
- struct mm_struct *mm = current->mm;
-
- obrk = mm->brk;
- ret = sys_brk(brk);
- if (ret < obrk)
- clear_user(compat_ptr(ret), PAGE_ALIGN(ret) - ret);
- return ret;
-}
-
-/* Structure for ia32 emulation on ia64 */
-struct epoll_event32
-{
- u32 events;
- u32 data[2];
-};
-
-asmlinkage long
-sys32_epoll_ctl(int epfd, int op, int fd, struct epoll_event32 __user *event)
-{
- mm_segment_t old_fs = get_fs();
- struct epoll_event event64;
- int error;
- u32 data_halfword;
-
- if (!access_ok(VERIFY_READ, event, sizeof(struct epoll_event32)))
- return -EFAULT;
-
- __get_user(event64.events, &event->events);
- __get_user(data_halfword, &event->data[0]);
- event64.data = data_halfword;
- __get_user(data_halfword, &event->data[1]);
- event64.data |= (u64)data_halfword << 32;
-
- set_fs(KERNEL_DS);
- error = sys_epoll_ctl(epfd, op, fd, (struct epoll_event __user *) &event64);
- set_fs(old_fs);
-
- return error;
-}
-
-asmlinkage long
-sys32_epoll_wait(int epfd, struct epoll_event32 __user * events, int maxevents,
- int timeout)
-{
- struct epoll_event *events64 = NULL;
- mm_segment_t old_fs = get_fs();
- int numevents, size;
- int evt_idx;
- int do_free_pages = 0;
-
- if (maxevents <= 0) {
- return -EINVAL;
- }
-
- /* Verify that the area passed by the user is writeable */
- if (!access_ok(VERIFY_WRITE, events, maxevents * sizeof(struct epoll_event32)))
- return -EFAULT;
-
- /*
- * Allocate space for the intermediate copy. If the space needed
- * is large enough to cause kmalloc to fail, then try again with
- * __get_free_pages.
- */
- size = maxevents * sizeof(struct epoll_event);
- events64 = kmalloc(size, GFP_KERNEL);
- if (events64 == NULL) {
- events64 = (struct epoll_event *)
- __get_free_pages(GFP_KERNEL, get_order(size));
- if (events64 == NULL)
- return -ENOMEM;
- do_free_pages = 1;
- }
-
- /* Do the system call */
- set_fs(KERNEL_DS); /* copy_to/from_user should work on kernel mem*/
- numevents = sys_epoll_wait(epfd, (struct epoll_event __user *) events64,
- maxevents, timeout);
- set_fs(old_fs);
-
- /* Don't modify userspace memory if we're returning an error */
- if (numevents > 0) {
- /* Translate the 64-bit structures back into the 32-bit
- structures */
- for (evt_idx = 0; evt_idx < numevents; evt_idx++) {
- __put_user(events64[evt_idx].events,
- &events[evt_idx].events);
- __put_user((u32)events64[evt_idx].data,
- &events[evt_idx].data[0]);
- __put_user((u32)(events64[evt_idx].data >> 32),
- &events[evt_idx].data[1]);
- }
- }
-
- if (do_free_pages)
- free_pages((unsigned long) events64, get_order(size));
- else
- kfree(events64);
- return numevents;
-}
-
-/*
- * Get a yet unused TLS descriptor index.
- */
-static int
-get_free_idx (void)
-{
- struct thread_struct *t = &current->thread;
- int idx;
-
- for (idx = 0; idx < GDT_ENTRY_TLS_ENTRIES; idx++)
- if (desc_empty(t->tls_array + idx))
- return idx + GDT_ENTRY_TLS_MIN;
- return -ESRCH;
-}
-
-static void set_tls_desc(struct task_struct *p, int idx,
- const struct ia32_user_desc *info, int n)
-{
- struct thread_struct *t = &p->thread;
- struct desc_struct *desc = &t->tls_array[idx - GDT_ENTRY_TLS_MIN];
- int cpu;
-
- /*
- * We must not get preempted while modifying the TLS.
- */
- cpu = get_cpu();
-
- while (n-- > 0) {
- if (LDT_empty(info)) {
- desc->a = 0;
- desc->b = 0;
- } else {
- desc->a = LDT_entry_a(info);
- desc->b = LDT_entry_b(info);
- }
-
- ++info;
- ++desc;
- }
-
- if (t == &current->thread)
- load_TLS(t, cpu);
-
- put_cpu();
-}
-
-/*
- * Set a given TLS descriptor:
- */
-asmlinkage int
-sys32_set_thread_area (struct ia32_user_desc __user *u_info)
-{
- struct ia32_user_desc info;
- int idx;
-
- if (copy_from_user(&info, u_info, sizeof(info)))
- return -EFAULT;
- idx = info.entry_number;
-
- /*
- * index -1 means the kernel should try to find and allocate an empty descriptor:
- */
- if (idx == -1) {
- idx = get_free_idx();
- if (idx < 0)
- return idx;
- if (put_user(idx, &u_info->entry_number))
- return -EFAULT;
- }
-
- if (idx < GDT_ENTRY_TLS_MIN || idx > GDT_ENTRY_TLS_MAX)
- return -EINVAL;
-
- set_tls_desc(current, idx, &info, 1);
- return 0;
-}
-
-/*
- * Get the current Thread-Local Storage area:
- */
-
-#define GET_BASE(desc) ( \
- (((desc)->a >> 16) & 0x0000ffff) | \
- (((desc)->b << 16) & 0x00ff0000) | \
- ( (desc)->b & 0xff000000) )
-
-#define GET_LIMIT(desc) ( \
- ((desc)->a & 0x0ffff) | \
- ((desc)->b & 0xf0000) )
-
-#define GET_32BIT(desc) (((desc)->b >> 22) & 1)
-#define GET_CONTENTS(desc) (((desc)->b >> 10) & 3)
-#define GET_WRITABLE(desc) (((desc)->b >> 9) & 1)
-#define GET_LIMIT_PAGES(desc) (((desc)->b >> 23) & 1)
-#define GET_PRESENT(desc) (((desc)->b >> 15) & 1)
-#define GET_USEABLE(desc) (((desc)->b >> 20) & 1)
-
-static void fill_user_desc(struct ia32_user_desc *info, int idx,
- const struct desc_struct *desc)
-{
- info->entry_number = idx;
- info->base_addr = GET_BASE(desc);
- info->limit = GET_LIMIT(desc);
- info->seg_32bit = GET_32BIT(desc);
- info->contents = GET_CONTENTS(desc);
- info->read_exec_only = !GET_WRITABLE(desc);
- info->limit_in_pages = GET_LIMIT_PAGES(desc);
- info->seg_not_present = !GET_PRESENT(desc);
- info->useable = GET_USEABLE(desc);
-}
-
-asmlinkage int
-sys32_get_thread_area (struct ia32_user_desc __user *u_info)
-{
- struct ia32_user_desc info;
- struct desc_struct *desc;
- int idx;
-
- if (get_user(idx, &u_info->entry_number))
- return -EFAULT;
- if (idx < GDT_ENTRY_TLS_MIN || idx > GDT_ENTRY_TLS_MAX)
- return -EINVAL;
-
- desc = current->thread.tls_array + idx - GDT_ENTRY_TLS_MIN;
- fill_user_desc(&info, idx, desc);
-
- if (copy_to_user(u_info, &info, sizeof(info)))
- return -EFAULT;
- return 0;
-}
-
-struct regset_get {
- void *kbuf;
- void __user *ubuf;
-};
-
-struct regset_set {
- const void *kbuf;
- const void __user *ubuf;
-};
-
-struct regset_getset {
- struct task_struct *target;
- const struct user_regset *regset;
- union {
- struct regset_get get;
- struct regset_set set;
- } u;
- unsigned int pos;
- unsigned int count;
- int ret;
-};
-
-static void getfpreg(struct task_struct *task, int regno, int *val)
-{
- switch (regno / sizeof(int)) {
- case 0:
- *val = task->thread.fcr & 0xffff;
- break;
- case 1:
- *val = task->thread.fsr & 0xffff;
- break;
- case 2:
- *val = (task->thread.fsr>>16) & 0xffff;
- break;
- case 3:
- *val = task->thread.fir;
- break;
- case 4:
- *val = (task->thread.fir>>32) & 0xffff;
- break;
- case 5:
- *val = task->thread.fdr;
- break;
- case 6:
- *val = (task->thread.fdr >> 32) & 0xffff;
- break;
- }
-}
-
-static void setfpreg(struct task_struct *task, int regno, int val)
-{
- switch (regno / sizeof(int)) {
- case 0:
- task->thread.fcr = (task->thread.fcr & (~0x1f3f))
- | (val & 0x1f3f);
- break;
- case 1:
- task->thread.fsr = (task->thread.fsr & (~0xffff)) | val;
- break;
- case 2:
- task->thread.fsr = (task->thread.fsr & (~0xffff0000))
- | (val << 16);
- break;
- case 3:
- task->thread.fir = (task->thread.fir & (~0xffffffff)) | val;
- break;
- case 5:
- task->thread.fdr = (task->thread.fdr & (~0xffffffff)) | val;
- break;
- }
-}
-
-static void access_fpreg_ia32(int regno, void *reg,
- struct pt_regs *pt, struct switch_stack *sw,
- int tos, int write)
-{
- void *f;
-
- if ((regno += tos) >= 8)
- regno -= 8;
- if (regno < 4)
- f = &pt->f8 + regno;
- else if (regno <= 7)
- f = &sw->f12 + (regno - 4);
- else {
- printk(KERN_ERR "regno must be less than 7 \n");
- return;
- }
-
- if (write)
- memcpy(f, reg, sizeof(struct _fpreg_ia32));
- else
- memcpy(reg, f, sizeof(struct _fpreg_ia32));
-}
-
-static void do_fpregs_get(struct unw_frame_info *info, void *arg)
-{
- struct regset_getset *dst = arg;
- struct task_struct *task = dst->target;
- struct pt_regs *pt;
- int start, end, tos;
- char buf[80];
-
- if (dst->count == 0 || unw_unwind_to_user(info) < 0)
- return;
- if (dst->pos < 7 * sizeof(int)) {
- end = min((dst->pos + dst->count),
- (unsigned int)(7 * sizeof(int)));
- for (start = dst->pos; start < end; start += sizeof(int))
- getfpreg(task, start, (int *)(buf + start));
- dst->ret = user_regset_copyout(&dst->pos, &dst->count,
- &dst->u.get.kbuf, &dst->u.get.ubuf, buf,
- 0, 7 * sizeof(int));
- if (dst->ret || dst->count == 0)
- return;
- }
- if (dst->pos < sizeof(struct ia32_user_i387_struct)) {
- pt = task_pt_regs(task);
- tos = (task->thread.fsr >> 11) & 7;
- end = min(dst->pos + dst->count,
- (unsigned int)(sizeof(struct ia32_user_i387_struct)));
- start = (dst->pos - 7 * sizeof(int)) /
- sizeof(struct _fpreg_ia32);
- end = (end - 7 * sizeof(int)) / sizeof(struct _fpreg_ia32);
- for (; start < end; start++)
- access_fpreg_ia32(start,
- (struct _fpreg_ia32 *)buf + start,
- pt, info->sw, tos, 0);
- dst->ret = user_regset_copyout(&dst->pos, &dst->count,
- &dst->u.get.kbuf, &dst->u.get.ubuf,
- buf, 7 * sizeof(int),
- sizeof(struct ia32_user_i387_struct));
- if (dst->ret || dst->count == 0)
- return;
- }
-}
-
-static void do_fpregs_set(struct unw_frame_info *info, void *arg)
-{
- struct regset_getset *dst = arg;
- struct task_struct *task = dst->target;
- struct pt_regs *pt;
- char buf[80];
- int end, start, tos;
-
- if (dst->count == 0 || unw_unwind_to_user(info) < 0)
- return;
-
- if (dst->pos < 7 * sizeof(int)) {
- start = dst->pos;
- dst->ret = user_regset_copyin(&dst->pos, &dst->count,
- &dst->u.set.kbuf, &dst->u.set.ubuf, buf,
- 0, 7 * sizeof(int));
- if (dst->ret)
- return;
- for (; start < dst->pos; start += sizeof(int))
- setfpreg(task, start, *((int *)(buf + start)));
- if (dst->count == 0)
- return;
- }
- if (dst->pos < sizeof(struct ia32_user_i387_struct)) {
- start = (dst->pos - 7 * sizeof(int)) /
- sizeof(struct _fpreg_ia32);
- dst->ret = user_regset_copyin(&dst->pos, &dst->count,
- &dst->u.set.kbuf, &dst->u.set.ubuf,
- buf, 7 * sizeof(int),
- sizeof(struct ia32_user_i387_struct));
- if (dst->ret)
- return;
- pt = task_pt_regs(task);
- tos = (task->thread.fsr >> 11) & 7;
- end = (dst->pos - 7 * sizeof(int)) / sizeof(struct _fpreg_ia32);
- for (; start < end; start++)
- access_fpreg_ia32(start,
- (struct _fpreg_ia32 *)buf + start,
- pt, info->sw, tos, 1);
- if (dst->count == 0)
- return;
- }
-}
-
-#define OFFSET(member) ((int)(offsetof(struct ia32_user_fxsr_struct, member)))
-static void getfpxreg(struct task_struct *task, int start, int end, char *buf)
-{
- int min_val;
-
- min_val = min(end, OFFSET(fop));
- while (start < min_val) {
- if (start == OFFSET(cwd))
- *((short *)buf) = task->thread.fcr & 0xffff;
- else if (start == OFFSET(swd))
- *((short *)buf) = task->thread.fsr & 0xffff;
- else if (start == OFFSET(twd))
- *((short *)buf) = (task->thread.fsr>>16) & 0xffff;
- buf += 2;
- start += 2;
- }
- /* skip fop element */
- if (start == OFFSET(fop)) {
- start += 2;
- buf += 2;
- }
- while (start < end) {
- if (start == OFFSET(fip))
- *((int *)buf) = task->thread.fir;
- else if (start == OFFSET(fcs))
- *((int *)buf) = (task->thread.fir>>32) & 0xffff;
- else if (start == OFFSET(foo))
- *((int *)buf) = task->thread.fdr;
- else if (start == OFFSET(fos))
- *((int *)buf) = (task->thread.fdr>>32) & 0xffff;
- else if (start == OFFSET(mxcsr))
- *((int *)buf) = ((task->thread.fcr>>32) & 0xff80)
- | ((task->thread.fsr>>32) & 0x3f);
- buf += 4;
- start += 4;
- }
-}
-
-static void setfpxreg(struct task_struct *task, int start, int end, char *buf)
-{
- int min_val, num32;
- short num;
- unsigned long num64;
-
- min_val = min(end, OFFSET(fop));
- while (start < min_val) {
- num = *((short *)buf);
- if (start == OFFSET(cwd)) {
- task->thread.fcr = (task->thread.fcr & (~0x1f3f))
- | (num & 0x1f3f);
- } else if (start == OFFSET(swd)) {
- task->thread.fsr = (task->thread.fsr & (~0xffff)) | num;
- } else if (start == OFFSET(twd)) {
- task->thread.fsr = (task->thread.fsr & (~0xffff0000))
- | (((int)num) << 16);
- }
- buf += 2;
- start += 2;
- }
- /* skip fop element */
- if (start == OFFSET(fop)) {
- start += 2;
- buf += 2;
- }
- while (start < end) {
- num32 = *((int *)buf);
- if (start == OFFSET(fip))
- task->thread.fir = (task->thread.fir & (~0xffffffff))
- | num32;
- else if (start == OFFSET(foo))
- task->thread.fdr = (task->thread.fdr & (~0xffffffff))
- | num32;
- else if (start == OFFSET(mxcsr)) {
- num64 = num32 & 0xff10;
- task->thread.fcr = (task->thread.fcr &
- (~0xff1000000000UL)) | (num64<<32);
- num64 = num32 & 0x3f;
- task->thread.fsr = (task->thread.fsr &
- (~0x3f00000000UL)) | (num64<<32);
- }
- buf += 4;
- start += 4;
- }
-}
-
-static void do_fpxregs_get(struct unw_frame_info *info, void *arg)
-{
- struct regset_getset *dst = arg;
- struct task_struct *task = dst->target;
- struct pt_regs *pt;
- char buf[128];
- int start, end, tos;
-
- if (dst->count == 0 || unw_unwind_to_user(info) < 0)
- return;
- if (dst->pos < OFFSET(st_space[0])) {
- end = min(dst->pos + dst->count, (unsigned int)32);
- getfpxreg(task, dst->pos, end, buf);
- dst->ret = user_regset_copyout(&dst->pos, &dst->count,
- &dst->u.get.kbuf, &dst->u.get.ubuf, buf,
- 0, OFFSET(st_space[0]));
- if (dst->ret || dst->count == 0)
- return;
- }
- if (dst->pos < OFFSET(xmm_space[0])) {
- pt = task_pt_regs(task);
- tos = (task->thread.fsr >> 11) & 7;
- end = min(dst->pos + dst->count,
- (unsigned int)OFFSET(xmm_space[0]));
- start = (dst->pos - OFFSET(st_space[0])) / 16;
- end = (end - OFFSET(st_space[0])) / 16;
- for (; start < end; start++)
- access_fpreg_ia32(start, buf + 16 * start, pt,
- info->sw, tos, 0);
- dst->ret = user_regset_copyout(&dst->pos, &dst->count,
- &dst->u.get.kbuf, &dst->u.get.ubuf,
- buf, OFFSET(st_space[0]), OFFSET(xmm_space[0]));
- if (dst->ret || dst->count == 0)
- return;
- }
- if (dst->pos < OFFSET(padding[0]))
- dst->ret = user_regset_copyout(&dst->pos, &dst->count,
- &dst->u.get.kbuf, &dst->u.get.ubuf,
- &info->sw->f16, OFFSET(xmm_space[0]),
- OFFSET(padding[0]));
-}
-
-static void do_fpxregs_set(struct unw_frame_info *info, void *arg)
-{
- struct regset_getset *dst = arg;
- struct task_struct *task = dst->target;
- char buf[128];
- int start, end;
-
- if (dst->count == 0 || unw_unwind_to_user(info) < 0)
- return;
-
- if (dst->pos < OFFSET(st_space[0])) {
- start = dst->pos;
- dst->ret = user_regset_copyin(&dst->pos, &dst->count,
- &dst->u.set.kbuf, &dst->u.set.ubuf,
- buf, 0, OFFSET(st_space[0]));
- if (dst->ret)
- return;
- setfpxreg(task, start, dst->pos, buf);
- if (dst->count == 0)
- return;
- }
- if (dst->pos < OFFSET(xmm_space[0])) {
- struct pt_regs *pt;
- int tos;
- pt = task_pt_regs(task);
- tos = (task->thread.fsr >> 11) & 7;
- start = (dst->pos - OFFSET(st_space[0])) / 16;
- dst->ret = user_regset_copyin(&dst->pos, &dst->count,
- &dst->u.set.kbuf, &dst->u.set.ubuf,
- buf, OFFSET(st_space[0]), OFFSET(xmm_space[0]));
- if (dst->ret)
- return;
- end = (dst->pos - OFFSET(st_space[0])) / 16;
- for (; start < end; start++)
- access_fpreg_ia32(start, buf + 16 * start, pt, info->sw,
- tos, 1);
- if (dst->count == 0)
- return;
- }
- if (dst->pos < OFFSET(padding[0]))
- dst->ret = user_regset_copyin(&dst->pos, &dst->count,
- &dst->u.set.kbuf, &dst->u.set.ubuf,
- &info->sw->f16, OFFSET(xmm_space[0]),
- OFFSET(padding[0]));
-}
-#undef OFFSET
-
-static int do_regset_call(void (*call)(struct unw_frame_info *, void *),
- struct task_struct *target,
- const struct user_regset *regset,
- unsigned int pos, unsigned int count,
- const void *kbuf, const void __user *ubuf)
-{
- struct regset_getset info = { .target = target, .regset = regset,
- .pos = pos, .count = count,
- .u.set = { .kbuf = kbuf, .ubuf = ubuf },
- .ret = 0 };
-
- if (target == current)
- unw_init_running(call, &info);
- else {
- struct unw_frame_info ufi;
- memset(&ufi, 0, sizeof(ufi));
- unw_init_from_blocked_task(&ufi, target);
- (*call)(&ufi, &info);
- }
-
- return info.ret;
-}
-
-static int ia32_fpregs_get(struct task_struct *target,
- const struct user_regset *regset,
- unsigned int pos, unsigned int count,
- void *kbuf, void __user *ubuf)
-{
- return do_regset_call(do_fpregs_get, target, regset, pos, count,
- kbuf, ubuf);
-}
-
-static int ia32_fpregs_set(struct task_struct *target,
- const struct user_regset *regset,
- unsigned int pos, unsigned int count,
- const void *kbuf, const void __user *ubuf)
-{
- return do_regset_call(do_fpregs_set, target, regset, pos, count,
- kbuf, ubuf);
-}
-
-static int ia32_fpxregs_get(struct task_struct *target,
- const struct user_regset *regset,
- unsigned int pos, unsigned int count,
- void *kbuf, void __user *ubuf)
-{
- return do_regset_call(do_fpxregs_get, target, regset, pos, count,
- kbuf, ubuf);
-}
-
-static int ia32_fpxregs_set(struct task_struct *target,
- const struct user_regset *regset,
- unsigned int pos, unsigned int count,
- const void *kbuf, const void __user *ubuf)
-{
- return do_regset_call(do_fpxregs_set, target, regset, pos, count,
- kbuf, ubuf);
-}
-
-static int ia32_genregs_get(struct task_struct *target,
- const struct user_regset *regset,
- unsigned int pos, unsigned int count,
- void *kbuf, void __user *ubuf)
-{
- if (kbuf) {
- u32 *kp = kbuf;
- while (count > 0) {
- *kp++ = getreg(target, pos);
- pos += 4;
- count -= 4;
- }
- } else {
- u32 __user *up = ubuf;
- while (count > 0) {
- if (__put_user(getreg(target, pos), up++))
- return -EFAULT;
- pos += 4;
- count -= 4;
- }
- }
- return 0;
-}
-
-static int ia32_genregs_set(struct task_struct *target,
- const struct user_regset *regset,
- unsigned int pos, unsigned int count,
- const void *kbuf, const void __user *ubuf)
-{
- int ret = 0;
-
- if (kbuf) {
- const u32 *kp = kbuf;
- while (!ret && count > 0) {
- putreg(target, pos, *kp++);
- pos += 4;
- count -= 4;
- }
- } else {
- const u32 __user *up = ubuf;
- u32 val;
- while (!ret && count > 0) {
- ret = __get_user(val, up++);
- if (!ret)
- putreg(target, pos, val);
- pos += 4;
- count -= 4;
- }
- }
- return ret;
-}
-
-static int ia32_tls_active(struct task_struct *target,
- const struct user_regset *regset)
-{
- struct thread_struct *t = &target->thread;
- int n = GDT_ENTRY_TLS_ENTRIES;
- while (n > 0 && desc_empty(&t->tls_array[n -1]))
- --n;
- return n;
-}
-
-static int ia32_tls_get(struct task_struct *target,
- const struct user_regset *regset, unsigned int pos,
- unsigned int count, void *kbuf, void __user *ubuf)
-{
- const struct desc_struct *tls;
-
- if (pos > GDT_ENTRY_TLS_ENTRIES * sizeof(struct ia32_user_desc) ||
- (pos % sizeof(struct ia32_user_desc)) != 0 ||
- (count % sizeof(struct ia32_user_desc)) != 0)
- return -EINVAL;
-
- pos /= sizeof(struct ia32_user_desc);
- count /= sizeof(struct ia32_user_desc);
-
- tls = &target->thread.tls_array[pos];
-
- if (kbuf) {
- struct ia32_user_desc *info = kbuf;
- while (count-- > 0)
- fill_user_desc(info++, GDT_ENTRY_TLS_MIN + pos++,
- tls++);
- } else {
- struct ia32_user_desc __user *u_info = ubuf;
- while (count-- > 0) {
- struct ia32_user_desc info;
- fill_user_desc(&info, GDT_ENTRY_TLS_MIN + pos++, tls++);
- if (__copy_to_user(u_info++, &info, sizeof(info)))
- return -EFAULT;
- }
- }
-
- return 0;
-}
-
-static int ia32_tls_set(struct task_struct *target,
- const struct user_regset *regset, unsigned int pos,
- unsigned int count, const void *kbuf, const void __user *ubuf)
-{
- struct ia32_user_desc infobuf[GDT_ENTRY_TLS_ENTRIES];
- const struct ia32_user_desc *info;
-
- if (pos > GDT_ENTRY_TLS_ENTRIES * sizeof(struct ia32_user_desc) ||
- (pos % sizeof(struct ia32_user_desc)) != 0 ||
- (count % sizeof(struct ia32_user_desc)) != 0)
- return -EINVAL;
-
- if (kbuf)
- info = kbuf;
- else if (__copy_from_user(infobuf, ubuf, count))
- return -EFAULT;
- else
- info = infobuf;
-
- set_tls_desc(target,
- GDT_ENTRY_TLS_MIN + (pos / sizeof(struct ia32_user_desc)),
- info, count / sizeof(struct ia32_user_desc));
-
- return 0;
-}
-
-/*
- * This should match arch/i386/kernel/ptrace.c:native_regsets.
- * XXX ioperm? vm86?
- */
-static const struct user_regset ia32_regsets[] = {
- {
- .core_note_type = NT_PRSTATUS,
- .n = sizeof(struct user_regs_struct32)/4,
- .size = 4, .align = 4,
- .get = ia32_genregs_get, .set = ia32_genregs_set
- },
- {
- .core_note_type = NT_PRFPREG,
- .n = sizeof(struct ia32_user_i387_struct) / 4,
- .size = 4, .align = 4,
- .get = ia32_fpregs_get, .set = ia32_fpregs_set
- },
- {
- .core_note_type = NT_PRXFPREG,
- .n = sizeof(struct ia32_user_fxsr_struct) / 4,
- .size = 4, .align = 4,
- .get = ia32_fpxregs_get, .set = ia32_fpxregs_set
- },
- {
- .core_note_type = NT_386_TLS,
- .n = GDT_ENTRY_TLS_ENTRIES,
- .bias = GDT_ENTRY_TLS_MIN,
- .size = sizeof(struct ia32_user_desc),
- .align = sizeof(struct ia32_user_desc),
- .active = ia32_tls_active,
- .get = ia32_tls_get, .set = ia32_tls_set,
- },
-};
-
-const struct user_regset_view user_ia32_view = {
- .name = "i386", .e_machine = EM_386,
- .regsets = ia32_regsets, .n = ARRAY_SIZE(ia32_regsets)
-};
-
-long sys32_fadvise64_64(int fd, __u32 offset_low, __u32 offset_high,
- __u32 len_low, __u32 len_high, int advice)
-{
- return sys_fadvise64_64(fd,
- (((u64)offset_high)<<32) | offset_low,
- (((u64)len_high)<<32) | len_low,
- advice);
-}
-
-#ifdef NOTYET /* UNTESTED FOR IA64 FROM HERE DOWN */
-
-asmlinkage long sys32_setreuid(compat_uid_t ruid, compat_uid_t euid)
-{
- uid_t sruid, seuid;
-
- sruid = (ruid == (compat_uid_t)-1) ? ((uid_t)-1) : ((uid_t)ruid);
- seuid = (euid == (compat_uid_t)-1) ? ((uid_t)-1) : ((uid_t)euid);
- return sys_setreuid(sruid, seuid);
-}
-
-asmlinkage long
-sys32_setresuid(compat_uid_t ruid, compat_uid_t euid,
- compat_uid_t suid)
-{
- uid_t sruid, seuid, ssuid;
-
- sruid = (ruid == (compat_uid_t)-1) ? ((uid_t)-1) : ((uid_t)ruid);
- seuid = (euid == (compat_uid_t)-1) ? ((uid_t)-1) : ((uid_t)euid);
- ssuid = (suid == (compat_uid_t)-1) ? ((uid_t)-1) : ((uid_t)suid);
- return sys_setresuid(sruid, seuid, ssuid);
-}
-
-asmlinkage long
-sys32_setregid(compat_gid_t rgid, compat_gid_t egid)
-{
- gid_t srgid, segid;
-
- srgid = (rgid == (compat_gid_t)-1) ? ((gid_t)-1) : ((gid_t)rgid);
- segid = (egid == (compat_gid_t)-1) ? ((gid_t)-1) : ((gid_t)egid);
- return sys_setregid(srgid, segid);
-}
-
-asmlinkage long
-sys32_setresgid(compat_gid_t rgid, compat_gid_t egid,
- compat_gid_t sgid)
-{
- gid_t srgid, segid, ssgid;
-
- srgid = (rgid == (compat_gid_t)-1) ? ((gid_t)-1) : ((gid_t)rgid);
- segid = (egid == (compat_gid_t)-1) ? ((gid_t)-1) : ((gid_t)egid);
- ssgid = (sgid == (compat_gid_t)-1) ? ((gid_t)-1) : ((gid_t)sgid);
- return sys_setresgid(srgid, segid, ssgid);
-}
-#endif /* NOTYET */
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