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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/ia64/ia32
downloadlinux-stericsson-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz
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!
Diffstat (limited to 'arch/ia64/ia32')
-rw-r--r--arch/ia64/ia32/Makefile12
-rw-r--r--arch/ia64/ia32/binfmt_elf32.c294
-rw-r--r--arch/ia64/ia32/elfcore32.h138
-rw-r--r--arch/ia64/ia32/ia32_entry.S500
-rw-r--r--arch/ia64/ia32/ia32_ioctl.c48
-rw-r--r--arch/ia64/ia32/ia32_ldt.c147
-rw-r--r--arch/ia64/ia32/ia32_signal.c1036
-rw-r--r--arch/ia64/ia32/ia32_support.c264
-rw-r--r--arch/ia64/ia32/ia32_traps.c156
-rw-r--r--arch/ia64/ia32/ia32priv.h544
-rw-r--r--arch/ia64/ia32/sys_ia32.c2747
11 files changed, 5886 insertions, 0 deletions
diff --git a/arch/ia64/ia32/Makefile b/arch/ia64/ia32/Makefile
new file mode 100644
index 000000000000..2ed90da81166
--- /dev/null
+++ b/arch/ia64/ia32/Makefile
@@ -0,0 +1,12 @@
+#
+# Makefile for the ia32 kernel emulation subsystem.
+#
+
+obj-y := ia32_entry.o sys_ia32.o ia32_ioctl.o ia32_signal.o \
+ ia32_support.o ia32_traps.o binfmt_elf32.o ia32_ldt.o
+
+CFLAGS_ia32_ioctl.o += -Ifs/
+
+# Don't let GCC uses f16-f31 so that save_ia32_fpstate_live() and
+# restore_ia32_fpstate_live() can be sure the live register contain user-level state.
+CFLAGS_ia32_signal.o += -mfixed-range=f16-f31
diff --git a/arch/ia64/ia32/binfmt_elf32.c b/arch/ia64/ia32/binfmt_elf32.c
new file mode 100644
index 000000000000..31de70b7c67f
--- /dev/null
+++ b/arch/ia64/ia32/binfmt_elf32.c
@@ -0,0 +1,294 @@
+/*
+ * IA-32 ELF support.
+ *
+ * Copyright (C) 1999 Arun Sharma <arun.sharma@intel.com>
+ * Copyright (C) 2001 Hewlett-Packard Co
+ * David Mosberger-Tang <davidm@hpl.hp.com>
+ *
+ * 06/16/00 A. Mallick initialize csd/ssd/tssd/cflg for ia32_load_state
+ * 04/13/01 D. Mosberger dropped saving tssd in ar.k1---it's not needed
+ * 09/14/01 D. Mosberger fixed memory management for gdt/tss page
+ */
+#include <linux/config.h>
+
+#include <linux/types.h>
+#include <linux/mm.h>
+#include <linux/security.h>
+
+#include <asm/param.h>
+#include <asm/signal.h>
+
+#include "ia32priv.h"
+#include "elfcore32.h"
+
+/* Override some function names */
+#undef start_thread
+#define start_thread ia32_start_thread
+#define elf_format elf32_format
+#define init_elf_binfmt init_elf32_binfmt
+#define exit_elf_binfmt exit_elf32_binfmt
+
+#undef CLOCKS_PER_SEC
+#define CLOCKS_PER_SEC IA32_CLOCKS_PER_SEC
+
+extern void ia64_elf32_init (struct pt_regs *regs);
+
+static void elf32_set_personality (void);
+
+#define setup_arg_pages(bprm,tos,exec) ia32_setup_arg_pages(bprm,exec)
+#define elf_map elf32_map
+
+#undef SET_PERSONALITY
+#define SET_PERSONALITY(ex, ibcs2) elf32_set_personality()
+
+#define elf_read_implies_exec(ex, have_pt_gnu_stack) (!(have_pt_gnu_stack))
+
+/* Ugly but avoids duplication */
+#include "../../../fs/binfmt_elf.c"
+
+extern struct page *ia32_shared_page[];
+extern unsigned long *ia32_gdt;
+extern struct page *ia32_gate_page;
+
+struct page *
+ia32_install_shared_page (struct vm_area_struct *vma, unsigned long address, int *type)
+{
+ struct page *pg = ia32_shared_page[smp_processor_id()];
+ get_page(pg);
+ if (type)
+ *type = VM_FAULT_MINOR;
+ return pg;
+}
+
+struct page *
+ia32_install_gate_page (struct vm_area_struct *vma, unsigned long address, int *type)
+{
+ struct page *pg = ia32_gate_page;
+ get_page(pg);
+ if (type)
+ *type = VM_FAULT_MINOR;
+ return pg;
+}
+
+
+static struct vm_operations_struct ia32_shared_page_vm_ops = {
+ .nopage = ia32_install_shared_page
+};
+
+static struct vm_operations_struct ia32_gate_page_vm_ops = {
+ .nopage = ia32_install_gate_page
+};
+
+void
+ia64_elf32_init (struct pt_regs *regs)
+{
+ struct vm_area_struct *vma;
+
+ /*
+ * Map GDT below 4GB, where the processor can find it. We need to map
+ * it with privilege level 3 because the IVE uses non-privileged accesses to these
+ * tables. IA-32 segmentation is used to protect against IA-32 accesses to them.
+ */
+ vma = kmem_cache_alloc(vm_area_cachep, SLAB_KERNEL);
+ if (vma) {
+ memset(vma, 0, sizeof(*vma));
+ vma->vm_mm = current->mm;
+ vma->vm_start = IA32_GDT_OFFSET;
+ vma->vm_end = vma->vm_start + PAGE_SIZE;
+ vma->vm_page_prot = PAGE_SHARED;
+ vma->vm_flags = VM_READ|VM_MAYREAD|VM_RESERVED;
+ vma->vm_ops = &ia32_shared_page_vm_ops;
+ down_write(&current->mm->mmap_sem);
+ {
+ if (insert_vm_struct(current->mm, vma)) {
+ kmem_cache_free(vm_area_cachep, vma);
+ up_write(&current->mm->mmap_sem);
+ BUG();
+ }
+ }
+ up_write(&current->mm->mmap_sem);
+ }
+
+ /*
+ * When user stack is not executable, push sigreturn code to stack makes
+ * segmentation fault raised when returning to kernel. So now sigreturn
+ * code is locked in specific gate page, which is pointed by pretcode
+ * when setup_frame_ia32
+ */
+ vma = kmem_cache_alloc(vm_area_cachep, SLAB_KERNEL);
+ if (vma) {
+ memset(vma, 0, sizeof(*vma));
+ vma->vm_mm = current->mm;
+ vma->vm_start = IA32_GATE_OFFSET;
+ vma->vm_end = vma->vm_start + PAGE_SIZE;
+ vma->vm_page_prot = PAGE_COPY_EXEC;
+ vma->vm_flags = VM_READ | VM_MAYREAD | VM_EXEC
+ | VM_MAYEXEC | VM_RESERVED;
+ vma->vm_ops = &ia32_gate_page_vm_ops;
+ down_write(&current->mm->mmap_sem);
+ {
+ if (insert_vm_struct(current->mm, vma)) {
+ kmem_cache_free(vm_area_cachep, vma);
+ up_write(&current->mm->mmap_sem);
+ BUG();
+ }
+ }
+ up_write(&current->mm->mmap_sem);
+ }
+
+ /*
+ * Install LDT as anonymous memory. This gives us all-zero segment descriptors
+ * until a task modifies them via modify_ldt().
+ */
+ vma = kmem_cache_alloc(vm_area_cachep, SLAB_KERNEL);
+ if (vma) {
+ memset(vma, 0, sizeof(*vma));
+ vma->vm_mm = current->mm;
+ vma->vm_start = IA32_LDT_OFFSET;
+ vma->vm_end = vma->vm_start + PAGE_ALIGN(IA32_LDT_ENTRIES*IA32_LDT_ENTRY_SIZE);
+ vma->vm_page_prot = PAGE_SHARED;
+ vma->vm_flags = VM_READ|VM_WRITE|VM_MAYREAD|VM_MAYWRITE;
+ down_write(&current->mm->mmap_sem);
+ {
+ if (insert_vm_struct(current->mm, vma)) {
+ kmem_cache_free(vm_area_cachep, vma);
+ up_write(&current->mm->mmap_sem);
+ BUG();
+ }
+ }
+ up_write(&current->mm->mmap_sem);
+ }
+
+ ia64_psr(regs)->ac = 0; /* turn off alignment checking */
+ regs->loadrs = 0;
+ /*
+ * According to the ABI %edx points to an `atexit' handler. Since we don't have
+ * one we'll set it to 0 and initialize all the other registers just to make
+ * things more deterministic, ala the i386 implementation.
+ */
+ regs->r8 = 0; /* %eax */
+ regs->r11 = 0; /* %ebx */
+ regs->r9 = 0; /* %ecx */
+ regs->r10 = 0; /* %edx */
+ regs->r13 = 0; /* %ebp */
+ regs->r14 = 0; /* %esi */
+ regs->r15 = 0; /* %edi */
+
+ current->thread.eflag = IA32_EFLAG;
+ current->thread.fsr = IA32_FSR_DEFAULT;
+ current->thread.fcr = IA32_FCR_DEFAULT;
+ current->thread.fir = 0;
+ current->thread.fdr = 0;
+
+ /*
+ * Setup GDTD. Note: GDTD is the descrambled version of the pseudo-descriptor
+ * format defined by Figure 3-11 "Pseudo-Descriptor Format" in the IA-32
+ * architecture manual. Also note that the only fields that are not ignored are
+ * `base', `limit', 'G', `P' (must be 1) and `S' (must be 0).
+ */
+ regs->r31 = IA32_SEG_UNSCRAMBLE(IA32_SEG_DESCRIPTOR(IA32_GDT_OFFSET, IA32_PAGE_SIZE - 1,
+ 0, 0, 0, 1, 0, 0, 0));
+ /* Setup the segment selectors */
+ regs->r16 = (__USER_DS << 16) | __USER_DS; /* ES == DS, GS, FS are zero */
+ regs->r17 = (__USER_DS << 16) | __USER_CS; /* SS, CS; ia32_load_state() sets TSS and LDT */
+
+ ia32_load_segment_descriptors(current);
+ ia32_load_state(current);
+}
+
+int
+ia32_setup_arg_pages (struct linux_binprm *bprm, int executable_stack)
+{
+ unsigned long stack_base;
+ struct vm_area_struct *mpnt;
+ struct mm_struct *mm = current->mm;
+ int i, ret;
+
+ stack_base = IA32_STACK_TOP - MAX_ARG_PAGES*PAGE_SIZE;
+ mm->arg_start = bprm->p + stack_base;
+
+ bprm->p += stack_base;
+ if (bprm->loader)
+ bprm->loader += stack_base;
+ bprm->exec += stack_base;
+
+ mpnt = kmem_cache_alloc(vm_area_cachep, SLAB_KERNEL);
+ if (!mpnt)
+ return -ENOMEM;
+
+ if (security_vm_enough_memory((IA32_STACK_TOP - (PAGE_MASK & (unsigned long) bprm->p))
+ >> PAGE_SHIFT)) {
+ kmem_cache_free(vm_area_cachep, mpnt);
+ return -ENOMEM;
+ }
+
+ memset(mpnt, 0, sizeof(*mpnt));
+
+ down_write(&current->mm->mmap_sem);
+ {
+ mpnt->vm_mm = current->mm;
+ mpnt->vm_start = PAGE_MASK & (unsigned long) bprm->p;
+ mpnt->vm_end = IA32_STACK_TOP;
+ if (executable_stack == EXSTACK_ENABLE_X)
+ mpnt->vm_flags = VM_STACK_FLAGS | VM_EXEC;
+ else if (executable_stack == EXSTACK_DISABLE_X)
+ mpnt->vm_flags = VM_STACK_FLAGS & ~VM_EXEC;
+ else
+ mpnt->vm_flags = VM_STACK_FLAGS;
+ mpnt->vm_page_prot = (mpnt->vm_flags & VM_EXEC)?
+ PAGE_COPY_EXEC: PAGE_COPY;
+ if ((ret = insert_vm_struct(current->mm, mpnt))) {
+ up_write(&current->mm->mmap_sem);
+ kmem_cache_free(vm_area_cachep, mpnt);
+ return ret;
+ }
+ current->mm->stack_vm = current->mm->total_vm = vma_pages(mpnt);
+ }
+
+ for (i = 0 ; i < MAX_ARG_PAGES ; i++) {
+ struct page *page = bprm->page[i];
+ if (page) {
+ bprm->page[i] = NULL;
+ install_arg_page(mpnt, page, stack_base);
+ }
+ stack_base += PAGE_SIZE;
+ }
+ up_write(&current->mm->mmap_sem);
+
+ /* Can't do it in ia64_elf32_init(). Needs to be done before calls to
+ elf32_map() */
+ current->thread.ppl = ia32_init_pp_list();
+
+ return 0;
+}
+
+static void
+elf32_set_personality (void)
+{
+ set_personality(PER_LINUX32);
+ current->thread.map_base = IA32_PAGE_OFFSET/3;
+ current->thread.task_size = IA32_PAGE_OFFSET; /* use what Linux/x86 uses... */
+ set_fs(USER_DS); /* set addr limit for new TASK_SIZE */
+}
+
+static unsigned long
+elf32_map (struct file *filep, unsigned long addr, struct elf_phdr *eppnt, int prot, int type)
+{
+ unsigned long pgoff = (eppnt->p_vaddr) & ~IA32_PAGE_MASK;
+
+ return ia32_do_mmap(filep, (addr & IA32_PAGE_MASK), eppnt->p_filesz + pgoff, prot, type,
+ eppnt->p_offset - pgoff);
+}
+
+#define cpu_uses_ia32el() (local_cpu_data->family > 0x1f)
+
+static int __init check_elf32_binfmt(void)
+{
+ if (cpu_uses_ia32el()) {
+ printk("Please use IA-32 EL for executing IA-32 binaries\n");
+ return unregister_binfmt(&elf_format);
+ }
+ return 0;
+}
+
+module_init(check_elf32_binfmt)
diff --git a/arch/ia64/ia32/elfcore32.h b/arch/ia64/ia32/elfcore32.h
new file mode 100644
index 000000000000..b73b8b6b10c1
--- /dev/null
+++ b/arch/ia64/ia32/elfcore32.h
@@ -0,0 +1,138 @@
+/*
+ * IA-32 ELF core dump support.
+ *
+ * Copyright (C) 2003 Arun Sharma <arun.sharma@intel.com>
+ *
+ * Derived from the x86_64 version
+ */
+#ifndef _ELFCORE32_H_
+#define _ELFCORE32_H_
+
+#include <asm/intrinsics.h>
+#include <asm/uaccess.h>
+
+#define USE_ELF_CORE_DUMP 1
+
+/* Override elfcore.h */
+#define _LINUX_ELFCORE_H 1
+typedef unsigned int elf_greg_t;
+
+#define ELF_NGREG (sizeof (struct user_regs_struct32) / sizeof(elf_greg_t))
+typedef elf_greg_t elf_gregset_t[ELF_NGREG];
+
+typedef struct ia32_user_i387_struct elf_fpregset_t;
+typedef struct ia32_user_fxsr_struct elf_fpxregset_t;
+
+struct elf_siginfo
+{
+ int si_signo; /* signal number */
+ int si_code; /* extra code */
+ int si_errno; /* errno */
+};
+
+#define jiffies_to_timeval(a,b) do { (b)->tv_usec = 0; (b)->tv_sec = (a)/HZ; }while(0)
+
+struct elf_prstatus
+{
+ struct elf_siginfo pr_info; /* Info associated with signal */
+ short pr_cursig; /* Current signal */
+ unsigned int pr_sigpend; /* Set of pending signals */
+ unsigned int pr_sighold; /* Set of held signals */
+ pid_t pr_pid;
+ pid_t pr_ppid;
+ pid_t pr_pgrp;
+ pid_t pr_sid;
+ struct compat_timeval pr_utime; /* User time */
+ struct compat_timeval pr_stime; /* System time */
+ struct compat_timeval pr_cutime; /* Cumulative user time */
+ struct compat_timeval pr_cstime; /* Cumulative system time */
+ elf_gregset_t pr_reg; /* GP registers */
+ int pr_fpvalid; /* True if math co-processor being used. */
+};
+
+#define ELF_PRARGSZ (80) /* Number of chars for args */
+
+struct elf_prpsinfo
+{
+ char pr_state; /* numeric process state */
+ char pr_sname; /* char for pr_state */
+ char pr_zomb; /* zombie */
+ char pr_nice; /* nice val */
+ unsigned int pr_flag; /* flags */
+ __u16 pr_uid;
+ __u16 pr_gid;
+ pid_t pr_pid, pr_ppid, pr_pgrp, pr_sid;
+ /* Lots missing */
+ char pr_fname[16]; /* filename of executable */
+ char pr_psargs[ELF_PRARGSZ]; /* initial part of arg list */
+};
+
+#define ELF_CORE_COPY_REGS(pr_reg, regs) \
+ pr_reg[0] = regs->r11; \
+ pr_reg[1] = regs->r9; \
+ pr_reg[2] = regs->r10; \
+ pr_reg[3] = regs->r14; \
+ pr_reg[4] = regs->r15; \
+ pr_reg[5] = regs->r13; \
+ pr_reg[6] = regs->r8; \
+ pr_reg[7] = regs->r16 & 0xffff; \
+ pr_reg[8] = (regs->r16 >> 16) & 0xffff; \
+ pr_reg[9] = (regs->r16 >> 32) & 0xffff; \
+ pr_reg[10] = (regs->r16 >> 48) & 0xffff; \
+ pr_reg[11] = regs->r1; \
+ pr_reg[12] = regs->cr_iip; \
+ pr_reg[13] = regs->r17 & 0xffff; \
+ pr_reg[14] = ia64_getreg(_IA64_REG_AR_EFLAG); \
+ pr_reg[15] = regs->r12; \
+ pr_reg[16] = (regs->r17 >> 16) & 0xffff;
+
+static inline void elf_core_copy_regs(elf_gregset_t *elfregs,
+ struct pt_regs *regs)
+{
+ ELF_CORE_COPY_REGS((*elfregs), regs)
+}
+
+static inline int elf_core_copy_task_regs(struct task_struct *t,
+ elf_gregset_t* elfregs)
+{
+ struct pt_regs *pp = ia64_task_regs(t);
+ ELF_CORE_COPY_REGS((*elfregs), pp);
+ return 1;
+}
+
+static inline int
+elf_core_copy_task_fpregs(struct task_struct *tsk, struct pt_regs *regs, elf_fpregset_t *fpu)
+{
+ struct ia32_user_i387_struct *fpstate = (void*)fpu;
+ mm_segment_t old_fs;
+
+ if (!tsk_used_math(tsk))
+ return 0;
+
+ old_fs = get_fs();
+ set_fs(KERNEL_DS);
+ save_ia32_fpstate(tsk, (struct ia32_user_i387_struct __user *) fpstate);
+ set_fs(old_fs);
+
+ return 1;
+}
+
+#define ELF_CORE_COPY_XFPREGS 1
+static inline int
+elf_core_copy_task_xfpregs(struct task_struct *tsk, elf_fpxregset_t *xfpu)
+{
+ struct ia32_user_fxsr_struct *fpxstate = (void*) xfpu;
+ mm_segment_t old_fs;
+
+ if (!tsk_used_math(tsk))
+ return 0;
+
+ old_fs = get_fs();
+ set_fs(KERNEL_DS);
+ save_ia32_fpxstate(tsk, (struct ia32_user_fxsr_struct __user *) fpxstate);
+ set_fs(old_fs);
+
+ return 1;
+}
+
+#endif /* _ELFCORE32_H_ */
diff --git a/arch/ia64/ia32/ia32_entry.S b/arch/ia64/ia32/ia32_entry.S
new file mode 100644
index 000000000000..829a6d80711c
--- /dev/null
+++ b/arch/ia64/ia32/ia32_entry.S
@@ -0,0 +1,500 @@
+#include <asm/asmmacro.h>
+#include <asm/ia32.h>
+#include <asm/offsets.h>
+#include <asm/signal.h>
+#include <asm/thread_info.h>
+
+#include "../kernel/minstate.h"
+
+ /*
+ * execve() is special because in case of success, we need to
+ * setup a null register window frame (in case an IA-32 process
+ * is exec'ing an IA-64 program).
+ */
+ENTRY(ia32_execve)
+ .prologue ASM_UNW_PRLG_RP|ASM_UNW_PRLG_PFS, ASM_UNW_PRLG_GRSAVE(3)
+ alloc loc1=ar.pfs,3,2,4,0
+ mov loc0=rp
+ .body
+ zxt4 out0=in0 // filename
+ ;; // stop bit between alloc and call
+ zxt4 out1=in1 // argv
+ zxt4 out2=in2 // envp
+ add out3=16,sp // regs
+ br.call.sptk.few rp=sys32_execve
+1: cmp.ge p6,p0=r8,r0
+ mov ar.pfs=loc1 // restore ar.pfs
+ ;;
+(p6) mov ar.pfs=r0 // clear ar.pfs in case of success
+ sxt4 r8=r8 // return 64-bit result
+ mov rp=loc0
+ br.ret.sptk.few rp
+END(ia32_execve)
+
+ENTRY(ia32_clone)
+ .prologue ASM_UNW_PRLG_RP|ASM_UNW_PRLG_PFS, ASM_UNW_PRLG_GRSAVE(5)
+ alloc r16=ar.pfs,5,2,6,0
+ DO_SAVE_SWITCH_STACK
+ mov loc0=rp
+ mov loc1=r16 // save ar.pfs across do_fork
+ .body
+ zxt4 out1=in1 // newsp
+ mov out3=16 // stacksize (compensates for 16-byte scratch area)
+ adds out2=IA64_SWITCH_STACK_SIZE+16,sp // out2 = &regs
+ mov out0=in0 // out0 = clone_flags
+ zxt4 out4=in2 // out4 = parent_tidptr
+ zxt4 out5=in4 // out5 = child_tidptr
+ br.call.sptk.many rp=do_fork
+.ret0: .restore sp
+ adds sp=IA64_SWITCH_STACK_SIZE,sp // pop the switch stack
+ mov ar.pfs=loc1
+ mov rp=loc0
+ br.ret.sptk.many rp
+END(ia32_clone)
+
+ENTRY(sys32_rt_sigsuspend)
+ .prologue ASM_UNW_PRLG_RP|ASM_UNW_PRLG_PFS, ASM_UNW_PRLG_GRSAVE(8)
+ alloc loc1=ar.pfs,8,2,3,0 // preserve all eight input regs
+ mov loc0=rp
+ mov out0=in0 // mask
+ mov out1=in1 // sigsetsize
+ mov out2=sp // out2 = &sigscratch
+ .fframe 16
+ adds sp=-16,sp // allocate dummy "sigscratch"
+ ;;
+ .body
+ br.call.sptk.many rp=ia32_rt_sigsuspend
+1: .restore sp
+ adds sp=16,sp
+ mov rp=loc0
+ mov ar.pfs=loc1
+ br.ret.sptk.many rp
+END(sys32_rt_sigsuspend)
+
+ENTRY(sys32_sigsuspend)
+ .prologue ASM_UNW_PRLG_RP|ASM_UNW_PRLG_PFS, ASM_UNW_PRLG_GRSAVE(8)
+ alloc loc1=ar.pfs,8,2,3,0 // preserve all eight input regs
+ mov loc0=rp
+ mov out0=in2 // mask (first two args are ignored)
+ ;;
+ mov out1=sp // out1 = &sigscratch
+ .fframe 16
+ adds sp=-16,sp // allocate dummy "sigscratch"
+ .body
+ br.call.sptk.many rp=ia32_sigsuspend
+1: .restore sp
+ adds sp=16,sp
+ mov rp=loc0
+ mov ar.pfs=loc1
+ br.ret.sptk.many rp
+END(sys32_sigsuspend)
+
+GLOBAL_ENTRY(ia32_ret_from_clone)
+ PT_REGS_UNWIND_INFO(0)
+{ /*
+ * Some versions of gas generate bad unwind info if the first instruction of a
+ * procedure doesn't go into the first slot of a bundle. This is a workaround.
+ */
+ nop.m 0
+ nop.i 0
+ /*
+ * We need to call schedule_tail() to complete the scheduling process.
+ * Called by ia64_switch_to after do_fork()->copy_thread(). r8 contains the
+ * address of the previously executing task.
+ */
+ br.call.sptk.many rp=ia64_invoke_schedule_tail
+}
+.ret1:
+ adds r2=TI_FLAGS+IA64_TASK_SIZE,r13
+ ;;
+ ld4 r2=[r2]
+ ;;
+ mov r8=0
+ and r2=_TIF_SYSCALL_TRACEAUDIT,r2
+ ;;
+ cmp.ne p6,p0=r2,r0
+(p6) br.cond.spnt .ia32_strace_check_retval
+ ;; // prevent RAW on r8
+END(ia32_ret_from_clone)
+ // fall thrugh
+GLOBAL_ENTRY(ia32_ret_from_syscall)
+ PT_REGS_UNWIND_INFO(0)
+
+ cmp.ge p6,p7=r8,r0 // syscall executed successfully?
+ adds r2=IA64_PT_REGS_R8_OFFSET+16,sp // r2 = &pt_regs.r8
+ ;;
+ alloc r3=ar.pfs,0,0,0,0 // drop the syscall argument frame
+ st8 [r2]=r8 // store return value in slot for r8
+ br.cond.sptk.many ia64_leave_kernel
+END(ia32_ret_from_syscall)
+
+ //
+ // Invoke a system call, but do some tracing before and after the call.
+ // We MUST preserve the current register frame throughout this routine
+ // because some system calls (such as ia64_execve) directly
+ // manipulate ar.pfs.
+ //
+ // Input:
+ // r8 = syscall number
+ // b6 = syscall entry point
+ //
+GLOBAL_ENTRY(ia32_trace_syscall)
+ PT_REGS_UNWIND_INFO(0)
+ mov r3=-38
+ adds r2=IA64_PT_REGS_R8_OFFSET+16,sp
+ ;;
+ st8 [r2]=r3 // initialize return code to -ENOSYS
+ br.call.sptk.few rp=syscall_trace_enter // give parent a chance to catch syscall args
+.ret2: // Need to reload arguments (they may be changed by the tracing process)
+ adds r2=IA64_PT_REGS_R1_OFFSET+16,sp // r2 = &pt_regs.r1
+ adds r3=IA64_PT_REGS_R13_OFFSET+16,sp // r3 = &pt_regs.r13
+ mov r15=IA32_NR_syscalls
+ ;;
+ ld4 r8=[r2],IA64_PT_REGS_R9_OFFSET-IA64_PT_REGS_R1_OFFSET
+ movl r16=ia32_syscall_table
+ ;;
+ ld4 r33=[r2],8 // r9 == ecx
+ ld4 r37=[r3],16 // r13 == ebp
+ cmp.ltu.unc p6,p7=r8,r15
+ ;;
+ ld4 r34=[r2],8 // r10 == edx
+ ld4 r36=[r3],8 // r15 == edi
+(p6) shladd r16=r8,3,r16 // force ni_syscall if not valid syscall number
+ ;;
+ ld8 r16=[r16]
+ ;;
+ ld4 r32=[r2],8 // r11 == ebx
+ mov b6=r16
+ ld4 r35=[r3],8 // r14 == esi
+ br.call.sptk.few rp=b6 // do the syscall
+.ia32_strace_check_retval:
+ cmp.lt p6,p0=r8,r0 // syscall failed?
+ adds r2=IA64_PT_REGS_R8_OFFSET+16,sp // r2 = &pt_regs.r8
+ ;;
+ st8.spill [r2]=r8 // store return value in slot for r8
+ br.call.sptk.few rp=syscall_trace_leave // give parent a chance to catch return value
+.ret4: alloc r2=ar.pfs,0,0,0,0 // drop the syscall argument frame
+ br.cond.sptk.many ia64_leave_kernel
+END(ia32_trace_syscall)
+
+GLOBAL_ENTRY(sys32_vfork)
+ alloc r16=ar.pfs,2,2,4,0;;
+ mov out0=IA64_CLONE_VFORK|IA64_CLONE_VM|SIGCHLD // out0 = clone_flags
+ br.cond.sptk.few .fork1 // do the work
+END(sys32_vfork)
+
+GLOBAL_ENTRY(sys32_fork)
+ .prologue ASM_UNW_PRLG_RP|ASM_UNW_PRLG_PFS, ASM_UNW_PRLG_GRSAVE(2)
+ alloc r16=ar.pfs,2,2,4,0
+ mov out0=SIGCHLD // out0 = clone_flags
+ ;;
+.fork1:
+ mov loc0=rp
+ mov loc1=r16 // save ar.pfs across do_fork
+ DO_SAVE_SWITCH_STACK
+
+ .body
+
+ mov out1=0
+ mov out3=0
+ adds out2=IA64_SWITCH_STACK_SIZE+16,sp // out2 = &regs
+ br.call.sptk.few rp=do_fork
+.ret5: .restore sp
+ adds sp=IA64_SWITCH_STACK_SIZE,sp // pop the switch stack
+ mov ar.pfs=loc1
+ mov rp=loc0
+ br.ret.sptk.many rp
+END(sys32_fork)
+
+ .rodata
+ .align 8
+ .globl ia32_syscall_table
+ia32_syscall_table:
+ data8 sys_ni_syscall /* 0 - old "setup(" system call*/
+ data8 sys_exit
+ data8 sys32_fork
+ data8 sys_read
+ data8 sys_write
+ data8 sys32_open /* 5 */
+ data8 sys_close
+ data8 sys32_waitpid
+ data8 sys_creat
+ data8 sys_link
+ data8 sys_unlink /* 10 */
+ data8 ia32_execve
+ data8 sys_chdir
+ data8 compat_sys_time
+ data8 sys_mknod
+ data8 sys_chmod /* 15 */
+ data8 sys_lchown /* 16-bit version */
+ data8 sys_ni_syscall /* old break syscall holder */
+ data8 sys_ni_syscall
+ data8 sys32_lseek
+ data8 sys_getpid /* 20 */
+ data8 compat_sys_mount
+ data8 sys_oldumount
+ data8 sys_setuid /* 16-bit version */
+ data8 sys_getuid /* 16-bit version */
+ data8 compat_sys_stime /* 25 */
+ data8 sys32_ptrace
+ data8 sys32_alarm
+ data8 sys_ni_syscall
+ data8 sys32_pause
+ data8 compat_sys_utime /* 30 */
+ data8 sys_ni_syscall /* old stty syscall holder */
+ data8 sys_ni_syscall /* old gtty syscall holder */
+ data8 sys_access
+ data8 sys_nice
+ data8 sys_ni_syscall /* 35 */ /* old ftime syscall holder */
+ data8 sys_sync
+ data8 sys_kill
+ data8 sys_rename
+ data8 sys_mkdir
+ data8 sys_rmdir /* 40 */
+ data8 sys_dup
+ data8 sys32_pipe
+ data8 compat_sys_times
+ data8 sys_ni_syscall /* old prof syscall holder */
+ data8 sys32_brk /* 45 */
+ data8 sys_setgid /* 16-bit version */
+ data8 sys_getgid /* 16-bit version */
+ data8 sys32_signal
+ data8 sys_geteuid /* 16-bit version */
+ data8 sys_getegid /* 16-bit version */ /* 50 */
+ data8 sys_acct
+ data8 sys_umount /* recycled never used phys( */
+ data8 sys_ni_syscall /* old lock syscall holder */
+ data8 compat_sys_ioctl
+ data8 compat_sys_fcntl /* 55 */
+ data8 sys_ni_syscall /* old mpx syscall holder */
+ data8 sys_setpgid
+ data8 sys_ni_syscall /* old ulimit syscall holder */
+ data8 sys_ni_syscall
+ data8 sys_umask /* 60 */
+ data8 sys_chroot
+ data8 sys_ustat
+ data8 sys_dup2
+ data8 sys_getppid
+ data8 sys_getpgrp /* 65 */
+ data8 sys_setsid
+ data8 sys32_sigaction
+ data8 sys_ni_syscall
+ data8 sys_ni_syscall
+ data8 sys_setreuid /* 16-bit version */ /* 70 */
+ data8 sys_setregid /* 16-bit version */
+ data8 sys32_sigsuspend
+ data8 compat_sys_sigpending
+ data8 sys_sethostname
+ data8 compat_sys_setrlimit /* 75 */
+ data8 compat_sys_old_getrlimit
+ data8 compat_sys_getrusage
+ data8 sys32_gettimeofday
+ data8 sys32_settimeofday
+ data8 sys32_getgroups16 /* 80 */
+ data8 sys32_setgroups16
+ data8 sys32_old_select
+ data8 sys_symlink
+ data8 sys_ni_syscall
+ data8 sys_readlink /* 85 */
+ data8 sys_uselib
+ data8 sys_swapon
+ data8 sys_reboot
+ data8 sys32_readdir
+ data8 sys32_mmap /* 90 */
+ data8 sys32_munmap
+ data8 sys_truncate
+ data8 sys_ftruncate
+ data8 sys_fchmod
+ data8 sys_fchown /* 16-bit version */ /* 95 */
+ data8 sys_getpriority
+ data8 sys_setpriority
+ data8 sys_ni_syscall /* old profil syscall holder */
+ data8 compat_sys_statfs
+ data8 compat_sys_fstatfs /* 100 */
+ data8 sys_ni_syscall /* ioperm */
+ data8 compat_sys_socketcall
+ data8 sys_syslog
+ data8 compat_sys_setitimer
+ data8 compat_sys_getitimer /* 105 */
+ data8 compat_sys_newstat
+ data8 compat_sys_newlstat
+ data8 compat_sys_newfstat
+ data8 sys_ni_syscall
+ data8 sys_ni_syscall /* iopl */ /* 110 */
+ data8 sys_vhangup
+ data8 sys_ni_syscall /* used to be sys_idle */
+ data8 sys_ni_syscall
+ data8 compat_sys_wait4
+ data8 sys_swapoff /* 115 */
+ data8 sys32_sysinfo
+ data8 sys32_ipc
+ data8 sys_fsync
+ data8 sys32_sigreturn
+ data8 ia32_clone /* 120 */
+ data8 sys_setdomainname
+ data8 sys32_newuname
+ data8 sys32_modify_ldt
+ data8 sys_ni_syscall /* adjtimex */
+ data8 sys32_mprotect /* 125 */
+ data8 compat_sys_sigprocmask
+ data8 sys_ni_syscall /* create_module */
+ data8 sys_ni_syscall /* init_module */
+ data8 sys_ni_syscall /* delete_module */
+ data8 sys_ni_syscall /* get_kernel_syms */ /* 130 */
+ data8 sys_quotactl
+ data8 sys_getpgid
+ data8 sys_fchdir
+ data8 sys_ni_syscall /* sys_bdflush */
+ data8 sys_sysfs /* 135 */
+ data8 sys32_personality
+ data8 sys_ni_syscall /* for afs_syscall */
+ data8 sys_setfsuid /* 16-bit version */
+ data8 sys_setfsgid /* 16-bit version */
+ data8 sys_llseek /* 140 */
+ data8 compat_sys_getdents
+ data8 compat_sys_select
+ data8 sys_flock
+ data8 sys32_msync
+ data8 compat_sys_readv /* 145 */
+ data8 compat_sys_writev
+ data8 sys_getsid
+ data8 sys_fdatasync
+ data8 sys32_sysctl
+ data8 sys_mlock /* 150 */
+ data8 sys_munlock
+ data8 sys_mlockall
+ data8 sys_munlockall
+ data8 sys_sched_setparam
+ data8 sys_sched_getparam /* 155 */
+ data8 sys_sched_setscheduler
+ data8 sys_sched_getscheduler
+ data8 sys_sched_yield
+ data8 sys_sched_get_priority_max
+ data8 sys_sched_get_priority_min /* 160 */
+ data8 sys32_sched_rr_get_interval
+ data8 compat_sys_nanosleep
+ data8 sys32_mremap
+ data8 sys_setresuid /* 16-bit version */
+ data8 sys32_getresuid16 /* 16-bit version */ /* 165 */
+ data8 sys_ni_syscall /* vm86 */
+ data8 sys_ni_syscall /* sys_query_module */
+ data8 sys_poll
+ data8 sys_ni_syscall /* nfsservctl */
+ data8 sys_setresgid /* 170 */
+ data8 sys32_getresgid16
+ data8 sys_prctl
+ data8 sys32_rt_sigreturn
+ data8 sys32_rt_sigaction
+ data8 sys32_rt_sigprocmask /* 175 */
+ data8 sys_rt_sigpending
+ data8 compat_sys_rt_sigtimedwait
+ data8 sys32_rt_sigqueueinfo
+ data8 sys32_rt_sigsuspend
+ data8 sys32_pread /* 180 */
+ data8 sys32_pwrite
+ data8 sys_chown /* 16-bit version */
+ data8 sys_getcwd
+ data8 sys_capget
+ data8 sys_capset /* 185 */
+ data8 sys32_sigaltstack
+ data8 sys32_sendfile
+ data8 sys_ni_syscall /* streams1 */
+ data8 sys_ni_syscall /* streams2 */
+ data8 sys32_vfork /* 190 */
+ data8 compat_sys_getrlimit
+ data8 sys32_mmap2
+ data8 sys32_truncate64
+ data8 sys32_ftruncate64
+ data8 sys32_stat64 /* 195 */
+ data8 sys32_lstat64
+ data8 sys32_fstat64
+ data8 sys_lchown
+ data8 sys_getuid
+ data8 sys_getgid /* 200 */
+ data8 sys_geteuid
+ data8 sys_getegid
+ data8 sys_setreuid
+ data8 sys_setregid
+ data8 sys_getgroups /* 205 */
+ data8 sys_setgroups
+ data8 sys_fchown
+ data8 sys_setresuid
+ data8 sys_getresuid
+ data8 sys_setresgid /* 210 */
+ data8 sys_getresgid
+ data8 sys_chown
+ data8 sys_setuid
+ data8 sys_setgid
+ data8 sys_setfsuid /* 215 */
+ data8 sys_setfsgid
+ data8 sys_pivot_root
+ data8 sys_mincore
+ data8 sys_madvise
+ data8 compat_sys_getdents64 /* 220 */
+ data8 compat_sys_fcntl64
+ data8 sys_ni_syscall /* reserved for TUX */
+ data8 sys_ni_syscall /* reserved for Security */
+ data8 sys_gettid
+ data8 sys_readahead /* 225 */
+ data8 sys_setxattr
+ data8 sys_lsetxattr
+ data8 sys_fsetxattr
+ data8 sys_getxattr
+ data8 sys_lgetxattr /* 230 */
+ data8 sys_fgetxattr
+ data8 sys_listxattr
+ data8 sys_llistxattr
+ data8 sys_flistxattr
+ data8 sys_removexattr /* 235 */
+ data8 sys_lremovexattr
+ data8 sys_fremovexattr
+ data8 sys_tkill
+ data8 sys_sendfile64
+ data8 compat_sys_futex /* 240 */
+ data8 compat_sys_sched_setaffinity
+ data8 compat_sys_sched_getaffinity
+ data8 sys32_set_thread_area
+ data8 sys32_get_thread_area
+ data8 compat_sys_io_setup /* 245 */
+ data8 sys_io_destroy
+ data8 compat_sys_io_getevents
+ data8 compat_sys_io_submit
+ data8 sys_io_cancel
+ data8 sys_fadvise64 /* 250 */
+ data8 sys_ni_syscall
+ data8 sys_exit_group
+ data8 sys_lookup_dcookie
+ data8 sys_epoll_create
+ data8 sys32_epoll_ctl /* 255 */
+ data8 sys32_epoll_wait
+ data8 sys_remap_file_pages
+ data8 sys_set_tid_address
+ data8 sys32_timer_create
+ data8 compat_sys_timer_settime /* 260 */
+ data8 compat_sys_timer_gettime
+ data8 sys_timer_getoverrun
+ data8 sys_timer_delete
+ data8 compat_sys_clock_settime
+ data8 compat_sys_clock_gettime /* 265 */
+ data8 compat_sys_clock_getres
+ data8 compat_sys_clock_nanosleep
+ data8 compat_sys_statfs64
+ data8 compat_sys_fstatfs64
+ data8 sys_tgkill /* 270 */
+ data8 compat_sys_utimes
+ data8 sys32_fadvise64_64
+ data8 sys_ni_syscall
+ data8 sys_ni_syscall
+ data8 sys_ni_syscall /* 275 */
+ data8 sys_ni_syscall
+ data8 compat_sys_mq_open
+ data8 sys_mq_unlink
+ data8 compat_sys_mq_timedsend
+ data8 compat_sys_mq_timedreceive /* 280 */
+ data8 compat_sys_mq_notify
+ data8 compat_sys_mq_getsetattr
+ data8 sys_ni_syscall /* reserved for kexec */
+ data8 compat_sys_waitid
+
+ // guard against failures to increase IA32_NR_syscalls
+ .org ia32_syscall_table + 8*IA32_NR_syscalls
diff --git a/arch/ia64/ia32/ia32_ioctl.c b/arch/ia64/ia32/ia32_ioctl.c
new file mode 100644
index 000000000000..9845dabe2613
--- /dev/null
+++ b/arch/ia64/ia32/ia32_ioctl.c
@@ -0,0 +1,48 @@
+/*
+ * IA32 Architecture-specific ioctl shim code
+ *
+ * Copyright (C) 2000 VA Linux Co
+ * Copyright (C) 2000 Don Dugger <n0ano@valinux.com>
+ * Copyright (C) 2001-2003 Hewlett-Packard Co
+ * David Mosberger-Tang <davidm@hpl.hp.com>
+ */
+
+#include <linux/signal.h> /* argh, msdos_fs.h isn't self-contained... */
+#include <linux/syscalls.h>
+#include "ia32priv.h"
+
+#define INCLUDES
+#include "compat_ioctl.c"
+#include <asm/ioctl32.h>
+
+#define IOCTL_NR(a) ((a) & ~(_IOC_SIZEMASK << _IOC_SIZESHIFT))
+
+#define DO_IOCTL(fd, cmd, arg) ({ \
+ int _ret; \
+ mm_segment_t _old_fs = get_fs(); \
+ \
+ set_fs(KERNEL_DS); \
+ _ret = sys_ioctl(fd, cmd, (unsigned long)arg); \
+ set_fs(_old_fs); \
+ _ret; \
+})
+
+#define CODE
+#include "compat_ioctl.c"
+
+typedef int (* ioctl32_handler_t)(unsigned int, unsigned int, unsigned long, struct file *);
+
+#define COMPATIBLE_IOCTL(cmd) HANDLE_IOCTL((cmd),sys_ioctl)
+#define HANDLE_IOCTL(cmd,handler) { (cmd), (ioctl32_handler_t)(handler), NULL },
+#define IOCTL_TABLE_START \
+ struct ioctl_trans ioctl_start[] = {
+#define IOCTL_TABLE_END \
+ };
+
+IOCTL_TABLE_START
+#define DECLARES
+#include "compat_ioctl.c"
+#include <linux/compat_ioctl.h>
+IOCTL_TABLE_END
+
+int ioctl_table_size = ARRAY_SIZE(ioctl_start);
diff --git a/arch/ia64/ia32/ia32_ldt.c b/arch/ia64/ia32/ia32_ldt.c
new file mode 100644
index 000000000000..a152738c7d0d
--- /dev/null
+++ b/arch/ia64/ia32/ia32_ldt.c
@@ -0,0 +1,147 @@
+/*
+ * Copyright (C) 2001, 2004 Hewlett-Packard Co
+ * David Mosberger-Tang <davidm@hpl.hp.com>
+ *
+ * Adapted from arch/i386/kernel/ldt.c
+ */
+
+#include <linux/errno.h>
+#include <linux/sched.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/smp.h>
+#include <linux/smp_lock.h>
+#include <linux/vmalloc.h>
+
+#include <asm/uaccess.h>
+
+#include "ia32priv.h"
+
+/*
+ * read_ldt() is not really atomic - this is not a problem since synchronization of reads
+ * and writes done to the LDT has to be assured by user-space anyway. Writes are atomic,
+ * to protect the security checks done on new descriptors.
+ */
+static int
+read_ldt (void __user *ptr, unsigned long bytecount)
+{
+ unsigned long bytes_left, n;
+ char __user *src, *dst;
+ char buf[256]; /* temporary buffer (don't overflow kernel stack!) */
+
+ if (bytecount > IA32_LDT_ENTRIES*IA32_LDT_ENTRY_SIZE)
+ bytecount = IA32_LDT_ENTRIES*IA32_LDT_ENTRY_SIZE;
+
+ bytes_left = bytecount;
+
+ src = (void __user *) IA32_LDT_OFFSET;
+ dst = ptr;
+
+ while (bytes_left) {
+ n = sizeof(buf);
+ if (n > bytes_left)
+ n = bytes_left;
+
+ /*
+ * We know we're reading valid memory, but we still must guard against
+ * running out of memory.
+ */
+ if (__copy_from_user(buf, src, n))
+ return -EFAULT;
+
+ if (copy_to_user(dst, buf, n))
+ return -EFAULT;
+
+ src += n;
+ dst += n;
+ bytes_left -= n;
+ }
+ return bytecount;
+}
+
+static int
+read_default_ldt (void __user * ptr, unsigned long bytecount)
+{
+ unsigned long size;
+ int err;
+
+ /* XXX fix me: should return equivalent of default_ldt[0] */
+ err = 0;
+ size = 8;
+ if (size > bytecount)
+ size = bytecount;
+
+ err = size;
+ if (clear_user(ptr, size))
+ err = -EFAULT;
+
+ return err;
+}
+
+static int
+write_ldt (void __user * ptr, unsigned long bytecount, int oldmode)
+{
+ struct ia32_user_desc ldt_info;
+ __u64 entry;
+ int ret;
+
+ if (bytecount != sizeof(ldt_info))
+ return -EINVAL;
+ if (copy_from_user(&ldt_info, ptr, sizeof(ldt_info)))
+ return -EFAULT;
+
+ if (ldt_info.entry_number >= IA32_LDT_ENTRIES)
+ return -EINVAL;
+ if (ldt_info.contents == 3) {
+ if (oldmode)
+ return -EINVAL;
+ if (ldt_info.seg_not_present == 0)
+ return -EINVAL;
+ }
+
+ if (ldt_info.base_addr == 0 && ldt_info.limit == 0
+ && (oldmode || (ldt_info.contents == 0 && ldt_info.read_exec_only == 1
+ && ldt_info.seg_32bit == 0 && ldt_info.limit_in_pages == 0
+ && ldt_info.seg_not_present == 1 && ldt_info.useable == 0)))
+ /* allow LDTs to be cleared by the user */
+ entry = 0;
+ else
+ /* we must set the "Accessed" bit as IVE doesn't emulate it */
+ entry = IA32_SEG_DESCRIPTOR(ldt_info.base_addr, ldt_info.limit,
+ (((ldt_info.read_exec_only ^ 1) << 1)
+ | (ldt_info.contents << 2)) | 1,
+ 1, 3, ldt_info.seg_not_present ^ 1,
+ (oldmode ? 0 : ldt_info.useable),
+ ldt_info.seg_32bit,
+ ldt_info.limit_in_pages);
+ /*
+ * Install the new entry. We know we're accessing valid (mapped) user-level
+ * memory, but we still need to guard against out-of-memory, hence we must use
+ * put_user().
+ */
+ ret = __put_user(entry, (__u64 __user *) IA32_LDT_OFFSET + ldt_info.entry_number);
+ ia32_load_segment_descriptors(current);
+ return ret;
+}
+
+asmlinkage int
+sys32_modify_ldt (int func, unsigned int ptr, unsigned int bytecount)
+{
+ int ret = -ENOSYS;
+
+ switch (func) {
+ case 0:
+ ret = read_ldt(compat_ptr(ptr), bytecount);
+ break;
+ case 1:
+ ret = write_ldt(compat_ptr(ptr), bytecount, 1);
+ break;
+ case 2:
+ ret = read_default_ldt(compat_ptr(ptr), bytecount);
+ break;
+ case 0x11:
+ ret = write_ldt(compat_ptr(ptr), bytecount, 0);
+ break;
+ }
+ return ret;
+}
diff --git a/arch/ia64/ia32/ia32_signal.c b/arch/ia64/ia32/ia32_signal.c
new file mode 100644
index 000000000000..19b02adce68c
--- /dev/null
+++ b/arch/ia64/ia32/ia32_signal.c
@@ -0,0 +1,1036 @@
+/*
+ * IA32 Architecture-specific signal handling support.
+ *
+ * Copyright (C) 1999, 2001-2002, 2005 Hewlett-Packard Co
+ * David Mosberger-Tang <davidm@hpl.hp.com>
+ * Copyright (C) 1999 Arun Sharma <arun.sharma@intel.com>
+ * Copyright (C) 2000 VA Linux Co
+ * Copyright (C) 2000 Don Dugger <n0ano@valinux.com>
+ *
+ * Derived from i386 and Alpha versions.
+ */
+
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/personality.h>
+#include <linux/ptrace.h>
+#include <linux/sched.h>
+#include <linux/signal.h>
+#include <linux/smp.h>
+#include <linux/smp_lock.h>
+#include <linux/stddef.h>
+#include <linux/syscalls.h>
+#include <linux/unistd.h>
+#include <linux/wait.h>
+#include <linux/compat.h>
+
+#include <asm/intrinsics.h>
+#include <asm/uaccess.h>
+#include <asm/rse.h>
+#include <asm/sigcontext.h>
+#include <asm/segment.h>
+
+#include "ia32priv.h"
+
+#include "../kernel/sigframe.h"
+
+#define A(__x) ((unsigned long)(__x))
+
+#define DEBUG_SIG 0
+#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
+
+#define __IA32_NR_sigreturn 119
+#define __IA32_NR_rt_sigreturn 173
+
+struct sigframe_ia32
+{
+ int pretcode;
+ int sig;
+ struct sigcontext_ia32 sc;
+ struct _fpstate_ia32 fpstate;
+ unsigned int extramask[_COMPAT_NSIG_WORDS-1];
+ char retcode[8];
+};
+
+struct rt_sigframe_ia32
+{
+ int pretcode;
+ int sig;
+ int pinfo;
+ int puc;
+ compat_siginfo_t info;
+ struct ucontext_ia32 uc;
+ struct _fpstate_ia32 fpstate;
+ char retcode[8];
+};
+
+int
+copy_siginfo_from_user32 (siginfo_t *to, compat_siginfo_t __user *from)
+{
+ unsigned long tmp;
+ int err;
+
+ if (!access_ok(VERIFY_READ, from, sizeof(compat_siginfo_t)))
+ return -EFAULT;
+
+ err = __get_user(to->si_signo, &from->si_signo);
+ err |= __get_user(to->si_errno, &from->si_errno);
+ err |= __get_user(to->si_code, &from->si_code);
+
+ if (to->si_code < 0)
+ err |= __copy_from_user(&to->_sifields._pad, &from->_sifields._pad, SI_PAD_SIZE);
+ else {
+ switch (to->si_code >> 16) {
+ case __SI_CHLD >> 16:
+ err |= __get_user(to->si_utime, &from->si_utime);
+ err |= __get_user(to->si_stime, &from->si_stime);
+ err |= __get_user(to->si_status, &from->si_status);
+ default:
+ err |= __get_user(to->si_pid, &from->si_pid);
+ err |= __get_user(to->si_uid, &from->si_uid);
+ break;
+ case __SI_FAULT >> 16:
+ err |= __get_user(tmp, &from->si_addr);
+ to->si_addr = (void __user *) tmp;
+ break;
+ case __SI_POLL >> 16:
+ err |= __get_user(to->si_band, &from->si_band);
+ err |= __get_user(to->si_fd, &from->si_fd);
+ break;
+ case __SI_RT >> 16: /* This is not generated by the kernel as of now. */
+ case __SI_MESGQ >> 16:
+ err |= __get_user(to->si_pid, &from->si_pid);
+ err |= __get_user(to->si_uid, &from->si_uid);
+ err |= __get_user(to->si_int, &from->si_int);
+ break;
+ }
+ }
+ return err;
+}
+
+int
+copy_siginfo_to_user32 (compat_siginfo_t __user *to, siginfo_t *from)
+{
+ unsigned int addr;
+ int err;
+
+ if (!access_ok(VERIFY_WRITE, to, sizeof(compat_siginfo_t)))
+ return -EFAULT;
+
+ /* If you change siginfo_t structure, please be sure
+ this code is fixed accordingly.
+ It should never copy any pad contained in the structure
+ to avoid security leaks, but must copy the generic
+ 3 ints plus the relevant union member.
+ This routine must convert siginfo from 64bit to 32bit as well
+ at the same time. */
+ err = __put_user(from->si_signo, &to->si_signo);
+ err |= __put_user(from->si_errno, &to->si_errno);
+ err |= __put_user((short)from->si_code, &to->si_code);
+ if (from->si_code < 0)
+ err |= __copy_to_user(&to->_sifields._pad, &from->_sifields._pad, SI_PAD_SIZE);
+ else {
+ switch (from->si_code >> 16) {
+ case __SI_CHLD >> 16:
+ err |= __put_user(from->si_utime, &to->si_utime);
+ err |= __put_user(from->si_stime, &to->si_stime);
+ err |= __put_user(from->si_status, &to->si_status);
+ default:
+ err |= __put_user(from->si_pid, &to->si_pid);
+ err |= __put_user(from->si_uid, &to->si_uid);
+ break;
+ case __SI_FAULT >> 16:
+ /* avoid type-checking warnings by copying _pad[0] in lieu of si_addr... */
+ err |= __put_user(from->_sifields._pad[0], &to->si_addr);
+ break;
+ case __SI_POLL >> 16:
+ err |= __put_user(from->si_band, &to->si_band);
+ err |= __put_user(from->si_fd, &to->si_fd);
+ break;
+ case __SI_TIMER >> 16:
+ err |= __put_user(from->si_tid, &to->si_tid);
+ err |= __put_user(from->si_overrun, &to->si_overrun);
+ addr = (unsigned long) from->si_ptr;
+ err |= __put_user(addr, &to->si_ptr);
+ break;
+ case __SI_RT >> 16: /* Not generated by the kernel as of now. */
+ case __SI_MESGQ >> 16:
+ err |= __put_user(from->si_uid, &to->si_uid);
+ err |= __put_user(from->si_pid, &to->si_pid);
+ addr = (unsigned long) from->si_ptr;
+ err |= __put_user(addr, &to->si_ptr);
+ break;
+ }
+ }
+ return err;
+}
+
+
+/*
+ * SAVE and RESTORE of ia32 fpstate info, from ia64 current state
+ * Used in exception handler to pass the fpstate to the user, and restore
+ * the fpstate while returning from the exception handler.
+ *
+ * fpstate info and their mapping to IA64 regs:
+ * fpstate REG(BITS) Attribute Comments
+ * cw ar.fcr(0:12) with bits 7 and 6 not used
+ * sw ar.fsr(0:15)
+ * tag ar.fsr(16:31) with odd numbered bits not used
+ * (read returns 0, writes ignored)
+ * ipoff ar.fir(0:31)
+ * cssel ar.fir(32:47)
+ * dataoff ar.fdr(0:31)
+ * datasel ar.fdr(32:47)
+ *
+ * _st[(0+TOS)%8] f8
+ * _st[(1+TOS)%8] f9
+ * _st[(2+TOS)%8] f10
+ * _st[(3+TOS)%8] f11 (f8..f11 from ptregs)
+ * : : : (f12..f15 from live reg)
+ * : : :
+ * _st[(7+TOS)%8] f15 TOS=sw.top(bits11:13)
+ *
+ * status Same as sw RO
+ * magic 0 as X86_FXSR_MAGIC in ia32
+ * mxcsr Bits(7:15)=ar.fcr(39:47)
+ * Bits(0:5) =ar.fsr(32:37) with bit 6 reserved
+ * _xmm[0..7] f16..f31 (live registers)
+ * with _xmm[0]
+ * Bit(64:127)=f17(0:63)
+ * Bit(0:63)=f16(0:63)
+ * All other fields unused...
+ */
+
+static int
+save_ia32_fpstate_live (struct _fpstate_ia32 __user *save)
+{
+ struct task_struct *tsk = current;
+ struct pt_regs *ptp;
+ struct _fpreg_ia32 *fpregp;
+ char buf[32];
+ unsigned long fsr, fcr, fir, fdr;
+ unsigned long new_fsr;
+ unsigned long num128[2];
+ unsigned long mxcsr=0;
+ int fp_tos, fr8_st_map;
+
+ if (!access_ok(VERIFY_WRITE, save, sizeof(*save)))
+ return -EFAULT;
+
+ /* Read in fsr, fcr, fir, fdr and copy onto fpstate */
+ fsr = ia64_getreg(_IA64_REG_AR_FSR);
+ fcr = ia64_getreg(_IA64_REG_AR_FCR);
+ fir = ia64_getreg(_IA64_REG_AR_FIR);
+ fdr = ia64_getreg(_IA64_REG_AR_FDR);
+
+ /*
+ * We need to clear the exception state before calling the signal handler. Clear
+ * the bits 15, bits 0-7 in fp status word. Similar to the functionality of fnclex
+ * instruction.
+ */
+ new_fsr = fsr & ~0x80ff;
+ ia64_setreg(_IA64_REG_AR_FSR, new_fsr);
+
+ __put_user(fcr & 0xffff, &save->cw);
+ __put_user(fsr & 0xffff, &save->sw);
+ __put_user((fsr>>16) & 0xffff, &save->tag);
+ __put_user(fir, &save->ipoff);
+ __put_user((fir>>32) & 0xffff, &save->cssel);
+ __put_user(fdr, &save->dataoff);
+ __put_user((fdr>>32) & 0xffff, &save->datasel);
+ __put_user(fsr & 0xffff, &save->status);
+
+ mxcsr = ((fcr>>32) & 0xff80) | ((fsr>>32) & 0x3f);
+ __put_user(mxcsr & 0xffff, &save->mxcsr);
+ __put_user( 0, &save->magic); //#define X86_FXSR_MAGIC 0x0000
+
+ /*
+ * save f8..f11 from pt_regs
+ * save f12..f15 from live register set
+ */
+ /*
+ * Find the location where f8 has to go in fp reg stack. This depends on
+ * TOP(11:13) field of sw. Other f reg continue sequentially from where f8 maps
+ * to.
+ */
+ fp_tos = (fsr>>11)&0x7;
+ fr8_st_map = (8-fp_tos)&0x7;
+ ptp = ia64_task_regs(tsk);
+ fpregp = (struct _fpreg_ia32 *)(((unsigned long)buf + 15) & ~15);
+ ia64f2ia32f(fpregp, &ptp->f8);
+ copy_to_user(&save->_st[(0+fr8_st_map)&0x7], fpregp, sizeof(struct _fpreg_ia32));
+ ia64f2ia32f(fpregp, &ptp->f9);
+ copy_to_user(&save->_st[(1+fr8_st_map)&0x7], fpregp, sizeof(struct _fpreg_ia32));
+ ia64f2ia32f(fpregp, &ptp->f10);
+ copy_to_user(&save->_st[(2+fr8_st_map)&0x7], fpregp, sizeof(struct _fpreg_ia32));
+ ia64f2ia32f(fpregp, &ptp->f11);
+ copy_to_user(&save->_st[(3+fr8_st_map)&0x7], fpregp, sizeof(struct _fpreg_ia32));
+
+ ia64_stfe(fpregp, 12);
+ copy_to_user(&save->_st[(4+fr8_st_map)&0x7], fpregp, sizeof(struct _fpreg_ia32));
+ ia64_stfe(fpregp, 13);
+ copy_to_user(&save->_st[(5+fr8_st_map)&0x7], fpregp, sizeof(struct _fpreg_ia32));
+ ia64_stfe(fpregp, 14);
+ copy_to_user(&save->_st[(6+fr8_st_map)&0x7], fpregp, sizeof(struct _fpreg_ia32));
+ ia64_stfe(fpregp, 15);
+ copy_to_user(&save->_st[(7+fr8_st_map)&0x7], fpregp, sizeof(struct _fpreg_ia32));
+
+ ia64_stf8(&num128[0], 16);
+ ia64_stf8(&num128[1], 17);
+ copy_to_user(&save->_xmm[0], num128, sizeof(struct _xmmreg_ia32));
+
+ ia64_stf8(&num128[0], 18);
+ ia64_stf8(&num128[1], 19);
+ copy_to_user(&save->_xmm[1], num128, sizeof(struct _xmmreg_ia32));
+
+ ia64_stf8(&num128[0], 20);
+ ia64_stf8(&num128[1], 21);
+ copy_to_user(&save->_xmm[2], num128, sizeof(struct _xmmreg_ia32));
+
+ ia64_stf8(&num128[0], 22);
+ ia64_stf8(&num128[1], 23);
+ copy_to_user(&save->_xmm[3], num128, sizeof(struct _xmmreg_ia32));
+
+ ia64_stf8(&num128[0], 24);
+ ia64_stf8(&num128[1], 25);
+ copy_to_user(&save->_xmm[4], num128, sizeof(struct _xmmreg_ia32));
+
+ ia64_stf8(&num128[0], 26);
+ ia64_stf8(&num128[1], 27);
+ copy_to_user(&save->_xmm[5], num128, sizeof(struct _xmmreg_ia32));
+
+ ia64_stf8(&num128[0], 28);
+ ia64_stf8(&num128[1], 29);
+ copy_to_user(&save->_xmm[6], num128, sizeof(struct _xmmreg_ia32));
+
+ ia64_stf8(&num128[0], 30);
+ ia64_stf8(&num128[1], 31);
+ copy_to_user(&save->_xmm[7], num128, sizeof(struct _xmmreg_ia32));
+ return 0;
+}
+
+static int
+restore_ia32_fpstate_live (struct _fpstate_ia32 __user *save)
+{
+ struct task_struct *tsk = current;
+ struct pt_regs *ptp;
+ unsigned int lo, hi;
+ unsigned long num128[2];
+ unsigned long num64, mxcsr;
+ struct _fpreg_ia32 *fpregp;
+ char buf[32];
+ unsigned long fsr, fcr, fir, fdr;
+ int fp_tos, fr8_st_map;
+
+ if (!access_ok(VERIFY_READ, save, sizeof(*save)))
+ return(-EFAULT);
+
+ /*
+ * Updating fsr, fcr, fir, fdr.
+ * Just a bit more complicated than save.
+ * - Need to make sure that we don't write any value other than the
+ * specific fpstate info
+ * - Need to make sure that the untouched part of frs, fdr, fir, fcr
+ * should remain same while writing.
+ * So, we do a read, change specific fields and write.
+ */
+ fsr = ia64_getreg(_IA64_REG_AR_FSR);
+ fcr = ia64_getreg(_IA64_REG_AR_FCR);
+ fir = ia64_getreg(_IA64_REG_AR_FIR);
+ fdr = ia64_getreg(_IA64_REG_AR_FDR);
+
+ __get_user(mxcsr, (unsigned int __user *)&save->mxcsr);
+ /* setting bits 0..5 8..12 with cw and 39..47 from mxcsr */
+ __get_user(lo, (unsigned int __user *)&save->cw);
+ num64 = mxcsr & 0xff10;
+ num64 = (num64 << 32) | (lo & 0x1f3f);
+ fcr = (fcr & (~0xff1000001f3fUL)) | num64;
+
+ /* setting bits 0..31 with sw and tag and 32..37 from mxcsr */
+ __get_user(lo, (unsigned int __user *)&save->sw);
+ /* set bits 15,7 (fsw.b, fsw.es) to reflect the current error status */
+ if ( !(lo & 0x7f) )
+ lo &= (~0x8080);
+ __get_user(hi, (unsigned int __user *)&save->tag);
+ num64 = mxcsr & 0x3f;
+ num64 = (num64 << 16) | (hi & 0xffff);
+ num64 = (num64 << 16) | (lo & 0xffff);
+ fsr = (fsr & (~0x3fffffffffUL)) | num64;
+
+ /* setting bits 0..47 with cssel and ipoff */
+ __get_user(lo, (unsigned int __user *)&save->ipoff);
+ __get_user(hi, (unsigned int __user *)&save->cssel);
+ num64 = hi & 0xffff;
+ num64 = (num64 << 32) | lo;
+ fir = (fir & (~0xffffffffffffUL)) | num64;
+
+ /* setting bits 0..47 with datasel and dataoff */
+ __get_user(lo, (unsigned int __user *)&save->dataoff);
+ __get_user(hi, (unsigned int __user *)&save->datasel);
+ num64 = hi & 0xffff;
+ num64 = (num64 << 32) | lo;
+ fdr = (fdr & (~0xffffffffffffUL)) | num64;
+
+ ia64_setreg(_IA64_REG_AR_FSR, fsr);
+ ia64_setreg(_IA64_REG_AR_FCR, fcr);
+ ia64_setreg(_IA64_REG_AR_FIR, fir);
+ ia64_setreg(_IA64_REG_AR_FDR, fdr);
+
+ /*
+ * restore f8..f11 onto pt_regs
+ * restore f12..f15 onto live registers
+ */
+ /*
+ * Find the location where f8 has to go in fp reg stack. This depends on
+ * TOP(11:13) field of sw. Other f reg continue sequentially from where f8 maps
+ * to.
+ */
+ fp_tos = (fsr>>11)&0x7;
+ fr8_st_map = (8-fp_tos)&0x7;
+ fpregp = (struct _fpreg_ia32 *)(((unsigned long)buf + 15) & ~15);
+
+ ptp = ia64_task_regs(tsk);
+ copy_from_user(fpregp, &save->_st[(0+fr8_st_map)&0x7], sizeof(struct _fpreg_ia32));
+ ia32f2ia64f(&ptp->f8, fpregp);
+ copy_from_user(fpregp, &save->_st[(1+fr8_st_map)&0x7], sizeof(struct _fpreg_ia32));
+ ia32f2ia64f(&ptp->f9, fpregp);
+ copy_from_user(fpregp, &save->_st[(2+fr8_st_map)&0x7], sizeof(struct _fpreg_ia32));
+ ia32f2ia64f(&ptp->f10, fpregp);
+ copy_from_user(fpregp, &save->_st[(3+fr8_st_map)&0x7], sizeof(struct _fpreg_ia32));
+ ia32f2ia64f(&ptp->f11, fpregp);
+
+ copy_from_user(fpregp, &save->_st[(4+fr8_st_map)&0x7], sizeof(struct _fpreg_ia32));
+ ia64_ldfe(12, fpregp);
+ copy_from_user(fpregp, &save->_st[(5+fr8_st_map)&0x7], sizeof(struct _fpreg_ia32));
+ ia64_ldfe(13, fpregp);
+ copy_from_user(fpregp, &save->_st[(6+fr8_st_map)&0x7], sizeof(struct _fpreg_ia32));
+ ia64_ldfe(14, fpregp);
+ copy_from_user(fpregp, &save->_st[(7+fr8_st_map)&0x7], sizeof(struct _fpreg_ia32));
+ ia64_ldfe(15, fpregp);
+
+ copy_from_user(num128, &save->_xmm[0], sizeof(struct _xmmreg_ia32));
+ ia64_ldf8(16, &num128[0]);
+ ia64_ldf8(17, &num128[1]);
+
+ copy_from_user(num128, &save->_xmm[1], sizeof(struct _xmmreg_ia32));
+ ia64_ldf8(18, &num128[0]);
+ ia64_ldf8(19, &num128[1]);
+
+ copy_from_user(num128, &save->_xmm[2], sizeof(struct _xmmreg_ia32));
+ ia64_ldf8(20, &num128[0]);
+ ia64_ldf8(21, &num128[1]);
+
+ copy_from_user(num128, &save->_xmm[3], sizeof(struct _xmmreg_ia32));
+ ia64_ldf8(22, &num128[0]);
+ ia64_ldf8(23, &num128[1]);
+
+ copy_from_user(num128, &save->_xmm[4], sizeof(struct _xmmreg_ia32));
+ ia64_ldf8(24, &num128[0]);
+ ia64_ldf8(25, &num128[1]);
+
+ copy_from_user(num128, &save->_xmm[5], sizeof(struct _xmmreg_ia32));
+ ia64_ldf8(26, &num128[0]);
+ ia64_ldf8(27, &num128[1]);
+
+ copy_from_user(num128, &save->_xmm[6], sizeof(struct _xmmreg_ia32));
+ ia64_ldf8(28, &num128[0]);
+ ia64_ldf8(29, &num128[1]);
+
+ copy_from_user(num128, &save->_xmm[7], sizeof(struct _xmmreg_ia32));
+ ia64_ldf8(30, &num128[0]);
+ ia64_ldf8(31, &num128[1]);
+ return 0;
+}
+
+static inline void
+sigact_set_handler (struct k_sigaction *sa, unsigned int handler, unsigned int restorer)
+{
+ if (handler + 1 <= 2)
+ /* SIG_DFL, SIG_IGN, or SIG_ERR: must sign-extend to 64-bits */
+ sa->sa.sa_handler = (__sighandler_t) A((int) handler);
+ else
+ sa->sa.sa_handler = (__sighandler_t) (((unsigned long) restorer << 32) | handler);
+}
+
+long
+__ia32_rt_sigsuspend (compat_sigset_t *sset, unsigned int sigsetsize, struct sigscratch *scr)
+{
+ extern long ia64_do_signal (sigset_t *oldset, struct sigscratch *scr, long in_syscall);
+ sigset_t oldset, set;
+
+ scr->scratch_unat = 0; /* avoid leaking kernel bits to user level */
+ memset(&set, 0, sizeof(&set));
+
+ if (memcpy(&set.sig, &sset->sig, sigsetsize))
+ return -EFAULT;
+
+ sigdelsetmask(&set, ~_BLOCKABLE);
+
+ spin_lock_irq(&current->sighand->siglock);
+ {
+ oldset = current->blocked;
+ current->blocked = set;
+ recalc_sigpending();
+ }
+ spin_unlock_irq(&current->sighand->siglock);
+
+ /*
+ * The return below usually returns to the signal handler. We need to pre-set the
+ * correct error code here to ensure that the right values get saved in sigcontext
+ * by ia64_do_signal.
+ */
+ scr->pt.r8 = -EINTR;
+ while (1) {
+ current->state = TASK_INTERRUPTIBLE;
+ schedule();
+ if (ia64_do_signal(&oldset, scr, 1))
+ return -EINTR;
+ }
+}
+
+asmlinkage long
+ia32_rt_sigsuspend (compat_sigset_t __user *uset, unsigned int sigsetsize, struct sigscratch *scr)
+{
+ compat_sigset_t set;
+
+ if (sigsetsize > sizeof(compat_sigset_t))
+ return -EINVAL;
+
+ if (copy_from_user(&set.sig, &uset->sig, sigsetsize))
+ return -EFAULT;
+
+ return __ia32_rt_sigsuspend(&set, sigsetsize, scr);
+}
+
+asmlinkage long
+ia32_sigsuspend (unsigned int mask, struct sigscratch *scr)
+{
+ return __ia32_rt_sigsuspend((compat_sigset_t *) &mask, sizeof(mask), scr);
+}
+
+asmlinkage long
+sys32_signal (int sig, unsigned int handler)
+{
+ struct k_sigaction new_sa, old_sa;
+ int ret;
+
+ sigact_set_handler(&new_sa, handler, 0);
+ new_sa.sa.sa_flags = SA_ONESHOT | SA_NOMASK;
+
+ ret = do_sigaction(sig, &new_sa, &old_sa);
+
+ return ret ? ret : IA32_SA_HANDLER(&old_sa);
+}
+
+asmlinkage long
+sys32_rt_sigaction (int sig, struct sigaction32 __user *act,
+ struct sigaction32 __user *oact, unsigned int sigsetsize)
+{
+ struct k_sigaction new_ka, old_ka;
+ unsigned int handler, restorer;
+ int ret;
+
+ /* XXX: Don't preclude handling different sized sigset_t's. */
+ if (sigsetsize != sizeof(compat_sigset_t))
+ return -EINVAL;
+
+ if (act) {
+ ret = get_user(handler, &act->sa_handler);
+ ret |= get_user(new_ka.sa.sa_flags, &act->sa_flags);
+ ret |= get_user(restorer, &act->sa_restorer);
+ ret |= copy_from_user(&new_ka.sa.sa_mask, &act->sa_mask, sizeof(compat_sigset_t));
+ if (ret)
+ return -EFAULT;
+
+ sigact_set_handler(&new_ka, handler, restorer);
+ }
+
+ ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
+
+ if (!ret && oact) {
+ ret = put_user(IA32_SA_HANDLER(&old_ka), &oact->sa_handler);
+ ret |= put_user(old_ka.sa.sa_flags, &oact->sa_flags);
+ ret |= put_user(IA32_SA_RESTORER(&old_ka), &oact->sa_restorer);
+ ret |= copy_to_user(&oact->sa_mask, &old_ka.sa.sa_mask, sizeof(compat_sigset_t));
+ }
+ return ret;
+}
+
+
+asmlinkage long
+sys32_rt_sigprocmask (int how, compat_sigset_t __user *set, compat_sigset_t __user *oset,
+ unsigned int sigsetsize)
+{
+ mm_segment_t old_fs = get_fs();
+ sigset_t s;
+ long ret;
+
+ if (sigsetsize > sizeof(s))
+ return -EINVAL;
+
+ if (set) {
+ memset(&s, 0, sizeof(s));
+ if (copy_from_user(&s.sig, set, sigsetsize))
+ return -EFAULT;
+ }
+ set_fs(KERNEL_DS);
+ ret = sys_rt_sigprocmask(how,
+ set ? (sigset_t __user *) &s : NULL,
+ oset ? (sigset_t __user *) &s : NULL, sizeof(s));
+ set_fs(old_fs);
+ if (ret)
+ return ret;
+ if (oset) {
+ if (copy_to_user(oset, &s.sig, sigsetsize))
+ return -EFAULT;
+ }
+ return 0;
+}
+
+asmlinkage long
+sys32_rt_sigqueueinfo (int pid, int sig, compat_siginfo_t __user *uinfo)
+{
+ mm_segment_t old_fs = get_fs();
+ siginfo_t info;
+ int ret;
+
+ if (copy_siginfo_from_user32(&info, uinfo))
+ return -EFAULT;
+ set_fs(KERNEL_DS);
+ ret = sys_rt_sigqueueinfo(pid, sig, (siginfo_t __user *) &info);
+ set_fs(old_fs);
+ return ret;
+}
+
+asmlinkage long
+sys32_sigaction (int sig, struct old_sigaction32 __user *act, struct old_sigaction32 __user *oact)
+{
+ struct k_sigaction new_ka, old_ka;
+ unsigned int handler, restorer;
+ int ret;
+
+ if (act) {
+ compat_old_sigset_t mask;
+
+ ret = get_user(handler, &act->sa_handler);
+ ret |= get_user(new_ka.sa.sa_flags, &act->sa_flags);
+ ret |= get_user(restorer, &act->sa_restorer);
+ ret |= get_user(mask, &act->sa_mask);
+ if (ret)
+ return ret;
+
+ sigact_set_handler(&new_ka, handler, restorer);
+ siginitset(&new_ka.sa.sa_mask, mask);
+ }
+
+ ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
+
+ if (!ret && oact) {
+ ret = put_user(IA32_SA_HANDLER(&old_ka), &oact->sa_handler);
+ ret |= put_user(old_ka.sa.sa_flags, &oact->sa_flags);
+ ret |= put_user(IA32_SA_RESTORER(&old_ka), &oact->sa_restorer);
+ ret |= put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask);
+ }
+
+ return ret;
+}
+
+static int
+setup_sigcontext_ia32 (struct sigcontext_ia32 __user *sc, struct _fpstate_ia32 __user *fpstate,
+ struct pt_regs *regs, unsigned long mask)
+{
+ int err = 0;
+ unsigned long flag;
+
+ if (!access_ok(VERIFY_WRITE, sc, sizeof(*sc)))
+ return -EFAULT;
+
+ err |= __put_user((regs->r16 >> 32) & 0xffff, (unsigned int __user *)&sc->fs);
+ err |= __put_user((regs->r16 >> 48) & 0xffff, (unsigned int __user *)&sc->gs);
+ err |= __put_user((regs->r16 >> 16) & 0xffff, (unsigned int __user *)&sc->es);
+ err |= __put_user(regs->r16 & 0xffff, (unsigned int __user *)&sc->ds);
+ err |= __put_user(regs->r15, &sc->edi);
+ err |= __put_user(regs->r14, &sc->esi);
+ err |= __put_user(regs->r13, &sc->ebp);
+ err |= __put_user(regs->r12, &sc->esp);
+ err |= __put_user(regs->r11, &sc->ebx);
+ err |= __put_user(regs->r10, &sc->edx);
+ err |= __put_user(regs->r9, &sc->ecx);
+ err |= __put_user(regs->r8, &sc->eax);
+#if 0
+ err |= __put_user(current->tss.trap_no, &sc->trapno);
+ err |= __put_user(current->tss.error_code, &sc->err);
+#endif
+ err |= __put_user(regs->cr_iip, &sc->eip);
+ err |= __put_user(regs->r17 & 0xffff, (unsigned int __user *)&sc->cs);
+ /*
+ * `eflags' is in an ar register for this context
+ */
+ flag = ia64_getreg(_IA64_REG_AR_EFLAG);
+ err |= __put_user((unsigned int)flag, &sc->eflags);
+ err |= __put_user(regs->r12, &sc->esp_at_signal);
+ err |= __put_user((regs->r17 >> 16) & 0xffff, (unsigned int __user *)&sc->ss);
+
+ if ( save_ia32_fpstate_live(fpstate) < 0 )
+ err = -EFAULT;
+ else
+ err |= __put_user((u32)(u64)fpstate, &sc->fpstate);
+
+#if 0
+ tmp = save_i387(fpstate);
+ if (tmp < 0)
+ err = 1;
+ else
+ err |= __put_user(tmp ? fpstate : NULL, &sc->fpstate);
+
+ /* non-iBCS2 extensions.. */
+#endif
+ err |= __put_user(mask, &sc->oldmask);
+#if 0
+ err |= __put_user(current->tss.cr2, &sc->cr2);
+#endif
+ return err;
+}
+
+static int
+restore_sigcontext_ia32 (struct pt_regs *regs, struct sigcontext_ia32 __user *sc, int *peax)
+{
+ unsigned int err = 0;
+
+ /* Always make any pending restarted system calls return -EINTR */
+ current_thread_info()->restart_block.fn = do_no_restart_syscall;
+
+ if (!access_ok(VERIFY_READ, sc, sizeof(*sc)))
+ return(-EFAULT);
+
+#define COPY(ia64x, ia32x) err |= __get_user(regs->ia64x, &sc->ia32x)
+
+#define copyseg_gs(tmp) (regs->r16 |= (unsigned long) (tmp) << 48)
+#define copyseg_fs(tmp) (regs->r16 |= (unsigned long) (tmp) << 32)
+#define copyseg_cs(tmp) (regs->r17 |= tmp)
+#define copyseg_ss(tmp) (regs->r17 |= (unsigned long) (tmp) << 16)
+#define copyseg_es(tmp) (regs->r16 |= (unsigned long) (tmp) << 16)
+#define copyseg_ds(tmp) (regs->r16 |= tmp)
+
+#define COPY_SEG(seg) \
+ { \
+ unsigned short tmp; \
+ err |= __get_user(tmp, &sc->seg); \
+ copyseg_##seg(tmp); \
+ }
+#define COPY_SEG_STRICT(seg) \
+ { \
+ unsigned short tmp; \
+ err |= __get_user(tmp, &sc->seg); \
+ copyseg_##seg(tmp|3); \
+ }
+
+ /* To make COPY_SEGs easier, we zero r16, r17 */
+ regs->r16 = 0;
+ regs->r17 = 0;
+
+ COPY_SEG(gs);
+ COPY_SEG(fs);
+ COPY_SEG(es);
+ COPY_SEG(ds);
+ COPY(r15, edi);
+ COPY(r14, esi);
+ COPY(r13, ebp);
+ COPY(r12, esp);
+ COPY(r11, ebx);
+ COPY(r10, edx);
+ COPY(r9, ecx);
+ COPY(cr_iip, eip);
+ COPY_SEG_STRICT(cs);
+ COPY_SEG_STRICT(ss);
+ ia32_load_segment_descriptors(current);
+ {
+ unsigned int tmpflags;
+ unsigned long flag;
+
+ /*
+ * IA32 `eflags' is not part of `pt_regs', it's in an ar register which
+ * is part of the thread context. Fortunately, we are executing in the
+ * IA32 process's context.
+ */
+ err |= __get_user(tmpflags, &sc->eflags);
+ flag = ia64_getreg(_IA64_REG_AR_EFLAG);
+ flag &= ~0x40DD5;
+ flag |= (tmpflags & 0x40DD5);
+ ia64_setreg(_IA64_REG_AR_EFLAG, flag);
+
+ regs->r1 = -1; /* disable syscall checks, r1 is orig_eax */
+ }
+
+ {
+ struct _fpstate_ia32 __user *buf = NULL;
+ u32 fpstate_ptr;
+ err |= get_user(fpstate_ptr, &(sc->fpstate));
+ buf = compat_ptr(fpstate_ptr);
+ if (buf) {
+ err |= restore_ia32_fpstate_live(buf);
+ }
+ }
+
+#if 0
+ {
+ struct _fpstate * buf;
+ err |= __get_user(buf, &sc->fpstate);
+ if (buf) {
+ if (!access_ok(VERIFY_READ, buf, sizeof(*buf)))
+ goto badframe;
+ err |= restore_i387(buf);
+ }
+ }
+#endif
+
+ err |= __get_user(*peax, &sc->eax);
+ return err;
+
+#if 0
+ badframe:
+ return 1;
+#endif
+}
+
+/*
+ * Determine which stack to use..
+ */
+static inline void __user *
+get_sigframe (struct k_sigaction *ka, struct pt_regs * regs, size_t frame_size)
+{
+ unsigned long esp;
+
+ /* Default to using normal stack (truncate off sign-extension of bit 31: */
+ esp = (unsigned int) regs->r12;
+
+ /* This is the X/Open sanctioned signal stack switching. */
+ if (ka->sa.sa_flags & SA_ONSTACK) {
+ if (!on_sig_stack(esp))
+ esp = current->sas_ss_sp + current->sas_ss_size;
+ }
+ /* Legacy stack switching not supported */
+
+ return (void __user *)((esp - frame_size) & -8ul);
+}
+
+static int
+setup_frame_ia32 (int sig, struct k_sigaction *ka, sigset_t *set, struct pt_regs * regs)
+{
+ struct exec_domain *ed = current_thread_info()->exec_domain;
+ struct sigframe_ia32 __user *frame;
+ int err = 0;
+
+ frame = get_sigframe(ka, regs, sizeof(*frame));
+
+ if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
+ goto give_sigsegv;
+
+ err |= __put_user((ed && ed->signal_invmap && sig < 32
+ ? (int)(ed->signal_invmap[sig]) : sig), &frame->sig);
+
+ err |= setup_sigcontext_ia32(&frame->sc, &frame->fpstate, regs, set->sig[0]);
+
+ if (_COMPAT_NSIG_WORDS > 1)
+ err |= __copy_to_user(frame->extramask, (char *) &set->sig + 4,
+ sizeof(frame->extramask));
+
+ /* Set up to return from userspace. If provided, use a stub
+ already in userspace. */
+ if (ka->sa.sa_flags & SA_RESTORER) {
+ unsigned int restorer = IA32_SA_RESTORER(ka);
+ err |= __put_user(restorer, &frame->pretcode);
+ } else {
+ /* Pointing to restorer in ia32 gate page */
+ err |= __put_user(IA32_GATE_OFFSET, &frame->pretcode);
+ }
+
+ /* This is popl %eax ; movl $,%eax ; int $0x80
+ * and there for historical reasons only.
+ * See arch/i386/kernel/signal.c
+ */
+
+ err |= __put_user(0xb858, (short __user *)(frame->retcode+0));
+ err |= __put_user(__IA32_NR_sigreturn, (int __user *)(frame->retcode+2));
+ err |= __put_user(0x80cd, (short __user *)(frame->retcode+6));
+
+ if (err)
+ goto give_sigsegv;
+
+ /* Set up registers for signal handler */
+ regs->r12 = (unsigned long) frame;
+ regs->cr_iip = IA32_SA_HANDLER(ka);
+
+ set_fs(USER_DS);
+
+#if 0
+ regs->eflags &= ~TF_MASK;
+#endif
+
+#if 0
+ printk("SIG deliver (%s:%d): sig=%d sp=%p pc=%lx ra=%x\n",
+ current->comm, current->pid, sig, (void *) frame, regs->cr_iip, frame->pretcode);
+#endif
+
+ return 1;
+
+ give_sigsegv:
+ force_sigsegv(sig, current);
+ return 0;
+}
+
+static int
+setup_rt_frame_ia32 (int sig, struct k_sigaction *ka, siginfo_t *info,
+ sigset_t *set, struct pt_regs * regs)
+{
+ struct exec_domain *ed = current_thread_info()->exec_domain;
+ compat_uptr_t pinfo, puc;
+ struct rt_sigframe_ia32 __user *frame;
+ int err = 0;
+
+ frame = get_sigframe(ka, regs, sizeof(*frame));
+
+ if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
+ goto give_sigsegv;
+
+ err |= __put_user((ed && ed->signal_invmap
+ && sig < 32 ? ed->signal_invmap[sig] : sig), &frame->sig);
+
+ pinfo = (long __user) &frame->info;
+ puc = (long __user) &frame->uc;
+ err |= __put_user(pinfo, &frame->pinfo);
+ err |= __put_user(puc, &frame->puc);
+ err |= copy_siginfo_to_user32(&frame->info, info);
+
+ /* Create the ucontext. */
+ err |= __put_user(0, &frame->uc.uc_flags);
+ err |= __put_user(0, &frame->uc.uc_link);
+ err |= __put_user(current->sas_ss_sp, &frame->uc.uc_stack.ss_sp);
+ err |= __put_user(sas_ss_flags(regs->r12), &frame->uc.uc_stack.ss_flags);
+ err |= __put_user(current->sas_ss_size, &frame->uc.uc_stack.ss_size);
+ err |= setup_sigcontext_ia32(&frame->uc.uc_mcontext, &frame->fpstate, regs, set->sig[0]);
+ err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
+ if (err)
+ goto give_sigsegv;
+
+ /* Set up to return from userspace. If provided, use a stub
+ already in userspace. */
+ if (ka->sa.sa_flags & SA_RESTORER) {
+ unsigned int restorer = IA32_SA_RESTORER(ka);
+ err |= __put_user(restorer, &frame->pretcode);
+ } else {
+ /* Pointing to rt_restorer in ia32 gate page */
+ err |= __put_user(IA32_GATE_OFFSET + 8, &frame->pretcode);
+ }
+
+ /* This is movl $,%eax ; int $0x80
+ * and there for historical reasons only.
+ * See arch/i386/kernel/signal.c
+ */
+
+ err |= __put_user(0xb8, (char __user *)(frame->retcode+0));
+ err |= __put_user(__IA32_NR_rt_sigreturn, (int __user *)(frame->retcode+1));
+ err |= __put_user(0x80cd, (short __user *)(frame->retcode+5));
+
+ if (err)
+ goto give_sigsegv;
+
+ /* Set up registers for signal handler */
+ regs->r12 = (unsigned long) frame;
+ regs->cr_iip = IA32_SA_HANDLER(ka);
+
+ set_fs(USER_DS);
+
+#if 0
+ regs->eflags &= ~TF_MASK;
+#endif
+
+#if 0
+ printk("SIG deliver (%s:%d): sp=%p pc=%lx ra=%x\n",
+ current->comm, current->pid, (void *) frame, regs->cr_iip, frame->pretcode);
+#endif
+
+ return 1;
+
+give_sigsegv:
+ force_sigsegv(sig, current);
+ return 0;
+}
+
+int
+ia32_setup_frame1 (int sig, struct k_sigaction *ka, siginfo_t *info,
+ sigset_t *set, struct pt_regs *regs)
+{
+ /* Set up the stack frame */
+ if (ka->sa.sa_flags & SA_SIGINFO)
+ return setup_rt_frame_ia32(sig, ka, info, set, regs);
+ else
+ return setup_frame_ia32(sig, ka, set, regs);
+}
+
+asmlinkage long
+sys32_sigreturn (int arg0, int arg1, int arg2, int arg3, int arg4, int arg5,
+ int arg6, int arg7, struct pt_regs regs)
+{
+ unsigned long esp = (unsigned int) regs.r12;
+ struct sigframe_ia32 __user *frame = (struct sigframe_ia32 __user *)(esp - 8);
+ sigset_t set;
+ int eax;
+
+ if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
+ goto badframe;
+
+ if (__get_user(set.sig[0], &frame->sc.oldmask)
+ || (_COMPAT_NSIG_WORDS > 1 && __copy_from_user((char *) &set.sig + 4, &frame->extramask,
+ sizeof(frame->extramask))))
+ goto badframe;
+
+ sigdelsetmask(&set, ~_BLOCKABLE);
+ spin_lock_irq(&current->sighand->siglock);
+ current->blocked = set;
+ recalc_sigpending();
+ spin_unlock_irq(&current->sighand->siglock);
+
+ if (restore_sigcontext_ia32(&regs, &frame->sc, &eax))
+ goto badframe;
+ return eax;
+
+ badframe:
+ force_sig(SIGSEGV, current);
+ return 0;
+}
+
+asmlinkage long
+sys32_rt_sigreturn (int arg0, int arg1, int arg2, int arg3, int arg4,
+ int arg5, int arg6, int arg7, struct pt_regs regs)
+{
+ unsigned long esp = (unsigned int) regs.r12;
+ struct rt_sigframe_ia32 __user *frame = (struct rt_sigframe_ia32 __user *)(esp - 4);
+ sigset_t set;
+ int eax;
+
+ if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
+ goto badframe;
+ if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
+ goto badframe;
+
+ sigdelsetmask(&set, ~_BLOCKABLE);
+ spin_lock_irq(&current->sighand->siglock);
+ current->blocked = set;
+ recalc_sigpending();
+ spin_unlock_irq(&current->sighand->siglock);
+
+ if (restore_sigcontext_ia32(&regs, &frame->uc.uc_mcontext, &eax))
+ goto badframe;
+
+ /* It is more difficult to avoid calling this function than to
+ call it and ignore errors. */
+ do_sigaltstack((stack_t __user *) &frame->uc.uc_stack, NULL, esp);
+
+ return eax;
+
+ badframe:
+ force_sig(SIGSEGV, current);
+ return 0;
+}
diff --git a/arch/ia64/ia32/ia32_support.c b/arch/ia64/ia32/ia32_support.c
new file mode 100644
index 000000000000..4f630043b3ae
--- /dev/null
+++ b/arch/ia64/ia32/ia32_support.c
@@ -0,0 +1,264 @@
+/*
+ * IA32 helper functions
+ *
+ * Copyright (C) 1999 Arun Sharma <arun.sharma@intel.com>
+ * Copyright (C) 2000 Asit K. Mallick <asit.k.mallick@intel.com>
+ * Copyright (C) 2001-2002 Hewlett-Packard Co
+ * David Mosberger-Tang <davidm@hpl.hp.com>
+ *
+ * 06/16/00 A. Mallick added csd/ssd/tssd for ia32 thread context
+ * 02/19/01 D. Mosberger dropped tssd; it's not needed
+ * 09/14/01 D. Mosberger fixed memory management for gdt/tss page
+ * 09/29/01 D. Mosberger added ia32_load_segment_descriptors()
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/mm.h>
+#include <linux/personality.h>
+#include <linux/sched.h>
+
+#include <asm/intrinsics.h>
+#include <asm/page.h>
+#include <asm/pgtable.h>
+#include <asm/system.h>
+#include <asm/processor.h>
+#include <asm/uaccess.h>
+
+#include "ia32priv.h"
+
+extern void die_if_kernel (char *str, struct pt_regs *regs, long err);
+
+struct exec_domain ia32_exec_domain;
+struct page *ia32_shared_page[NR_CPUS];
+unsigned long *ia32_boot_gdt;
+unsigned long *cpu_gdt_table[NR_CPUS];
+struct page *ia32_gate_page;
+
+static unsigned long
+load_desc (u16 selector)
+{
+ unsigned long *table, limit, index;
+
+ if (!selector)
+ return 0;
+ if (selector & IA32_SEGSEL_TI) {
+ table = (unsigned long *) IA32_LDT_OFFSET;
+ limit = IA32_LDT_ENTRIES;
+ } else {
+ table = cpu_gdt_table[smp_processor_id()];
+ limit = IA32_PAGE_SIZE / sizeof(ia32_boot_gdt[0]);
+ }
+ index = selector >> IA32_SEGSEL_INDEX_SHIFT;
+ if (index >= limit)
+ return 0;
+ return IA32_SEG_UNSCRAMBLE(table[index]);
+}
+
+void
+ia32_load_segment_descriptors (struct task_struct *task)
+{
+ struct pt_regs *regs = ia64_task_regs(task);
+
+ /* Setup the segment descriptors */
+ regs->r24 = load_desc(regs->r16 >> 16); /* ESD */
+ regs->r27 = load_desc(regs->r16 >> 0); /* DSD */
+ regs->r28 = load_desc(regs->r16 >> 32); /* FSD */
+ regs->r29 = load_desc(regs->r16 >> 48); /* GSD */
+ regs->ar_csd = load_desc(regs->r17 >> 0); /* CSD */
+ regs->ar_ssd = load_desc(regs->r17 >> 16); /* SSD */
+}
+
+int
+ia32_clone_tls (struct task_struct *child, struct pt_regs *childregs)
+{
+ struct desc_struct *desc;
+ struct ia32_user_desc info;
+ int idx;
+
+ if (copy_from_user(&info, (void __user *)(childregs->r14 & 0xffffffff), sizeof(info)))
+ return -EFAULT;
+ if (LDT_empty(&info))
+ return -EINVAL;
+
+ idx = info.entry_number;
+ if (idx < GDT_ENTRY_TLS_MIN || idx > GDT_ENTRY_TLS_MAX)
+ return -EINVAL;
+
+ desc = child->thread.tls_array + idx - GDT_ENTRY_TLS_MIN;
+ desc->a = LDT_entry_a(&info);
+ desc->b = LDT_entry_b(&info);
+
+ /* XXX: can this be done in a cleaner way ? */
+ load_TLS(&child->thread, smp_processor_id());
+ ia32_load_segment_descriptors(child);
+ load_TLS(&current->thread, smp_processor_id());
+
+ return 0;
+}
+
+void
+ia32_save_state (struct task_struct *t)
+{
+ t->thread.eflag = ia64_getreg(_IA64_REG_AR_EFLAG);
+ t->thread.fsr = ia64_getreg(_IA64_REG_AR_FSR);
+ t->thread.fcr = ia64_getreg(_IA64_REG_AR_FCR);
+ t->thread.fir = ia64_getreg(_IA64_REG_AR_FIR);
+ t->thread.fdr = ia64_getreg(_IA64_REG_AR_FDR);
+ ia64_set_kr(IA64_KR_IO_BASE, t->thread.old_iob);
+ ia64_set_kr(IA64_KR_TSSD, t->thread.old_k1);
+}
+
+void
+ia32_load_state (struct task_struct *t)
+{
+ unsigned long eflag, fsr, fcr, fir, fdr, tssd;
+ struct pt_regs *regs = ia64_task_regs(t);
+
+ eflag = t->thread.eflag;
+ fsr = t->thread.fsr;
+ fcr = t->thread.fcr;
+ fir = t->thread.fir;
+ fdr = t->thread.fdr;
+ tssd = load_desc(_TSS); /* TSSD */
+
+ ia64_setreg(_IA64_REG_AR_EFLAG, eflag);
+ ia64_setreg(_IA64_REG_AR_FSR, fsr);
+ ia64_setreg(_IA64_REG_AR_FCR, fcr);
+ ia64_setreg(_IA64_REG_AR_FIR, fir);
+ ia64_setreg(_IA64_REG_AR_FDR, fdr);
+ current->thread.old_iob = ia64_get_kr(IA64_KR_IO_BASE);
+ current->thread.old_k1 = ia64_get_kr(IA64_KR_TSSD);
+ ia64_set_kr(IA64_KR_IO_BASE, IA32_IOBASE);
+ ia64_set_kr(IA64_KR_TSSD, tssd);
+
+ regs->r17 = (_TSS << 48) | (_LDT << 32) | (__u32) regs->r17;
+ regs->r30 = load_desc(_LDT); /* LDTD */
+ load_TLS(&t->thread, smp_processor_id());
+}
+
+/*
+ * Setup IA32 GDT and TSS
+ */
+void
+ia32_gdt_init (void)
+{
+ int cpu = smp_processor_id();
+
+ ia32_shared_page[cpu] = alloc_page(GFP_KERNEL);
+ if (!ia32_shared_page[cpu])
+ panic("failed to allocate ia32_shared_page[%d]\n", cpu);
+
+ cpu_gdt_table[cpu] = page_address(ia32_shared_page[cpu]);
+
+ /* Copy from the boot cpu's GDT */
+ memcpy(cpu_gdt_table[cpu], ia32_boot_gdt, PAGE_SIZE);
+}
+
+
+/*
+ * Setup IA32 GDT and TSS
+ */
+static void
+ia32_boot_gdt_init (void)
+{
+ unsigned long ldt_size;
+
+ ia32_shared_page[0] = alloc_page(GFP_KERNEL);
+ if (!ia32_shared_page[0])
+ panic("failed to allocate ia32_shared_page[0]\n");
+
+ ia32_boot_gdt = page_address(ia32_shared_page[0]);
+ cpu_gdt_table[0] = ia32_boot_gdt;
+
+ /* CS descriptor in IA-32 (scrambled) format */
+ ia32_boot_gdt[__USER_CS >> 3]
+ = IA32_SEG_DESCRIPTOR(0, (IA32_GATE_END-1) >> IA32_PAGE_SHIFT,
+ 0xb, 1, 3, 1, 1, 1, 1);
+
+ /* DS descriptor in IA-32 (scrambled) format */
+ ia32_boot_gdt[__USER_DS >> 3]
+ = IA32_SEG_DESCRIPTOR(0, (IA32_GATE_END-1) >> IA32_PAGE_SHIFT,
+ 0x3, 1, 3, 1, 1, 1, 1);
+
+ ldt_size = PAGE_ALIGN(IA32_LDT_ENTRIES*IA32_LDT_ENTRY_SIZE);
+ ia32_boot_gdt[TSS_ENTRY] = IA32_SEG_DESCRIPTOR(IA32_TSS_OFFSET, 235,
+ 0xb, 0, 3, 1, 1, 1, 0);
+ ia32_boot_gdt[LDT_ENTRY] = IA32_SEG_DESCRIPTOR(IA32_LDT_OFFSET, ldt_size - 1,
+ 0x2, 0, 3, 1, 1, 1, 0);
+}
+
+static void
+ia32_gate_page_init(void)
+{
+ unsigned long *sr;
+
+ ia32_gate_page = alloc_page(GFP_KERNEL);
+ sr = page_address(ia32_gate_page);
+ /* This is popl %eax ; movl $,%eax ; int $0x80 */
+ *sr++ = 0xb858 | (__IA32_NR_sigreturn << 16) | (0x80cdUL << 48);
+
+ /* This is movl $,%eax ; int $0x80 */
+ *sr = 0xb8 | (__IA32_NR_rt_sigreturn << 8) | (0x80cdUL << 40);
+}
+
+void
+ia32_mem_init(void)
+{
+ ia32_boot_gdt_init();
+ ia32_gate_page_init();
+}
+
+/*
+ * Handle bad IA32 interrupt via syscall
+ */
+void
+ia32_bad_interrupt (unsigned long int_num, struct pt_regs *regs)
+{
+ siginfo_t siginfo;
+
+ die_if_kernel("Bad IA-32 interrupt", regs, int_num);
+
+ siginfo.si_signo = SIGTRAP;
+ siginfo.si_errno = int_num; /* XXX is it OK to abuse si_errno like this? */
+ siginfo.si_flags = 0;
+ siginfo.si_isr = 0;
+ siginfo.si_addr = NULL;
+ siginfo.si_imm = 0;
+ siginfo.si_code = TRAP_BRKPT;
+ force_sig_info(SIGTRAP, &siginfo, current);
+}
+
+void
+ia32_cpu_init (void)
+{
+ /* initialize global ia32 state - CR0 and CR4 */
+ ia64_setreg(_IA64_REG_AR_CFLAG, (((ulong) IA32_CR4 << 32) | IA32_CR0));
+}
+
+static int __init
+ia32_init (void)
+{
+ ia32_exec_domain.name = "Linux/x86";
+ ia32_exec_domain.handler = NULL;
+ ia32_exec_domain.pers_low = PER_LINUX32;
+ ia32_exec_domain.pers_high = PER_LINUX32;
+ ia32_exec_domain.signal_map = default_exec_domain.signal_map;
+ ia32_exec_domain.signal_invmap = default_exec_domain.signal_invmap;
+ register_exec_domain(&ia32_exec_domain);
+
+#if PAGE_SHIFT > IA32_PAGE_SHIFT
+ {
+ extern kmem_cache_t *partial_page_cachep;
+
+ partial_page_cachep = kmem_cache_create("partial_page_cache",
+ sizeof(struct partial_page), 0, 0,
+ NULL, NULL);
+ if (!partial_page_cachep)
+ panic("Cannot create partial page SLAB cache");
+ }
+#endif
+ return 0;
+}
+
+__initcall(ia32_init);
diff --git a/arch/ia64/ia32/ia32_traps.c b/arch/ia64/ia32/ia32_traps.c
new file mode 100644
index 000000000000..e486042672f1
--- /dev/null
+++ b/arch/ia64/ia32/ia32_traps.c
@@ -0,0 +1,156 @@
+/*
+ * IA-32 exception handlers
+ *
+ * Copyright (C) 2000 Asit K. Mallick <asit.k.mallick@intel.com>
+ * Copyright (C) 2001-2002 Hewlett-Packard Co
+ * David Mosberger-Tang <davidm@hpl.hp.com>
+ *
+ * 06/16/00 A. Mallick added siginfo for most cases (close to IA32)
+ * 09/29/00 D. Mosberger added ia32_intercept()
+ */
+
+#include <linux/kernel.h>
+#include <linux/sched.h>
+
+#include "ia32priv.h"
+
+#include <asm/intrinsics.h>
+#include <asm/ptrace.h>
+
+int
+ia32_intercept (struct pt_regs *regs, unsigned long isr)
+{
+ switch ((isr >> 16) & 0xff) {
+ case 0: /* Instruction intercept fault */
+ case 4: /* Locked Data reference fault */
+ case 1: /* Gate intercept trap */
+ return -1;
+
+ case 2: /* System flag trap */
+ if (((isr >> 14) & 0x3) >= 2) {
+ /* MOV SS, POP SS instructions */
+ ia64_psr(regs)->id = 1;
+ return 0;
+ } else
+ return -1;
+ }
+ return -1;
+}
+
+int
+ia32_exception (struct pt_regs *regs, unsigned long isr)
+{
+ struct siginfo siginfo;
+
+ /* initialize these fields to avoid leaking kernel bits to user space: */
+ siginfo.si_errno = 0;
+ siginfo.si_flags = 0;
+ siginfo.si_isr = 0;
+ siginfo.si_imm = 0;
+ switch ((isr >> 16) & 0xff) {
+ case 1:
+ case 2:
+ siginfo.si_signo = SIGTRAP;
+ if (isr == 0)
+ siginfo.si_code = TRAP_TRACE;
+ else if (isr & 0x4)
+ siginfo.si_code = TRAP_BRANCH;
+ else
+ siginfo.si_code = TRAP_BRKPT;
+ break;
+
+ case 3:
+ siginfo.si_signo = SIGTRAP;
+ siginfo.si_code = TRAP_BRKPT;
+ break;
+
+ case 0: /* Divide fault */
+ siginfo.si_signo = SIGFPE;
+ siginfo.si_code = FPE_INTDIV;
+ break;
+
+ case 4: /* Overflow */
+ case 5: /* Bounds fault */
+ siginfo.si_signo = SIGFPE;
+ siginfo.si_code = 0;
+ break;
+
+ case 6: /* Invalid Op-code */
+ siginfo.si_signo = SIGILL;
+ siginfo.si_code = ILL_ILLOPN;
+ break;
+
+ case 7: /* FP DNA */
+ case 8: /* Double Fault */
+ case 9: /* Invalid TSS */
+ case 11: /* Segment not present */
+ case 12: /* Stack fault */
+ case 13: /* General Protection Fault */
+ siginfo.si_signo = SIGSEGV;
+ siginfo.si_code = 0;
+ break;
+
+ case 16: /* Pending FP error */
+ {
+ unsigned long fsr, fcr;
+
+ fsr = ia64_getreg(_IA64_REG_AR_FSR);
+ fcr = ia64_getreg(_IA64_REG_AR_FCR);
+
+ siginfo.si_signo = SIGFPE;
+ /*
+ * (~cwd & swd) will mask out exceptions that are not set to unmasked
+ * status. 0x3f is the exception bits in these regs, 0x200 is the
+ * C1 reg you need in case of a stack fault, 0x040 is the stack
+ * fault bit. We should only be taking one exception at a time,
+ * so if this combination doesn't produce any single exception,
+ * then we have a bad program that isn't synchronizing its FPU usage
+ * and it will suffer the consequences since we won't be able to
+ * fully reproduce the context of the exception
+ */
+ siginfo.si_isr = isr;
+ siginfo.si_flags = __ISR_VALID;
+ switch(((~fcr) & (fsr & 0x3f)) | (fsr & 0x240)) {
+ case 0x000:
+ default:
+ siginfo.si_code = 0;
+ break;
+ case 0x001: /* Invalid Op */
+ case 0x040: /* Stack Fault */
+ case 0x240: /* Stack Fault | Direction */
+ siginfo.si_code = FPE_FLTINV;
+ break;
+ case 0x002: /* Denormalize */
+ case 0x010: /* Underflow */
+ siginfo.si_code = FPE_FLTUND;
+ break;
+ case 0x004: /* Zero Divide */
+ siginfo.si_code = FPE_FLTDIV;
+ break;
+ case 0x008: /* Overflow */
+ siginfo.si_code = FPE_FLTOVF;
+ break;
+ case 0x020: /* Precision */
+ siginfo.si_code = FPE_FLTRES;
+ break;
+ }
+
+ break;
+ }
+
+ case 17: /* Alignment check */
+ siginfo.si_signo = SIGSEGV;
+ siginfo.si_code = BUS_ADRALN;
+ break;
+
+ case 19: /* SSE Numeric error */
+ siginfo.si_signo = SIGFPE;
+ siginfo.si_code = 0;
+ break;
+
+ default:
+ return -1;
+ }
+ force_sig_info(siginfo.si_signo, &siginfo, current);
+ return 0;
+}
diff --git a/arch/ia64/ia32/ia32priv.h b/arch/ia64/ia32/ia32priv.h
new file mode 100644
index 000000000000..b2de948bdaea
--- /dev/null
+++ b/arch/ia64/ia32/ia32priv.h
@@ -0,0 +1,544 @@
+#ifndef _ASM_IA64_IA32_PRIV_H
+#define _ASM_IA64_IA32_PRIV_H
+
+#include <linux/config.h>
+
+#include <asm/ia32.h>
+
+#ifdef CONFIG_IA32_SUPPORT
+
+#include <linux/binfmts.h>
+#include <linux/compat.h>
+#include <linux/rbtree.h>
+
+#include <asm/processor.h>
+
+/*
+ * 32 bit structures for IA32 support.
+ */
+
+#define IA32_PAGE_SIZE (1UL << IA32_PAGE_SHIFT)
+#define IA32_PAGE_MASK (~(IA32_PAGE_SIZE - 1))
+#define IA32_PAGE_ALIGN(addr) (((addr) + IA32_PAGE_SIZE - 1) & IA32_PAGE_MASK)
+#define IA32_CLOCKS_PER_SEC 100 /* Cast in stone for IA32 Linux */
+
+/*
+ * partially mapped pages provide precise accounting of which 4k sub pages
+ * are mapped and which ones are not, thereby improving IA-32 compatibility.
+ */
+struct partial_page {
+ struct partial_page *next; /* linked list, sorted by address */
+ struct rb_node pp_rb;
+ /* 64K is the largest "normal" page supported by ia64 ABI. So 4K*32
+ * should suffice.*/
+ unsigned int bitmap;
+ unsigned int base;
+};
+
+struct partial_page_list {
+ struct partial_page *pp_head; /* list head, points to the lowest
+ * addressed partial page */
+ struct rb_root ppl_rb;
+ struct partial_page *pp_hint; /* pp_hint->next is the last
+ * accessed partial page */
+ atomic_t pp_count; /* reference count */
+};
+
+#if PAGE_SHIFT > IA32_PAGE_SHIFT
+struct partial_page_list* ia32_init_pp_list (void);
+#else
+# define ia32_init_pp_list() 0
+#endif
+
+/* sigcontext.h */
+/*
+ * As documented in the iBCS2 standard..
+ *
+ * The first part of "struct _fpstate" is just the
+ * normal i387 hardware setup, the extra "status"
+ * word is used to save the coprocessor status word
+ * before entering the handler.
+ */
+struct _fpreg_ia32 {
+ unsigned short significand[4];
+ unsigned short exponent;
+};
+
+struct _fpxreg_ia32 {
+ unsigned short significand[4];
+ unsigned short exponent;
+ unsigned short padding[3];
+};
+
+struct _xmmreg_ia32 {
+ unsigned int element[4];
+};
+
+
+struct _fpstate_ia32 {
+ unsigned int cw,
+ sw,
+ tag,
+ ipoff,
+ cssel,
+ dataoff,
+ datasel;
+ struct _fpreg_ia32 _st[8];
+ unsigned short status;
+ unsigned short magic; /* 0xffff = regular FPU data only */
+
+ /* FXSR FPU environment */
+ unsigned int _fxsr_env[6]; /* FXSR FPU env is ignored */
+ unsigned int mxcsr;
+ unsigned int reserved;
+ struct _fpxreg_ia32 _fxsr_st[8]; /* FXSR FPU reg data is ignored */
+ struct _xmmreg_ia32 _xmm[8];
+ unsigned int padding[56];
+};
+
+struct sigcontext_ia32 {
+ unsigned short gs, __gsh;
+ unsigned short fs, __fsh;
+ unsigned short es, __esh;
+ unsigned short ds, __dsh;
+ unsigned int edi;
+ unsigned int esi;
+ unsigned int ebp;
+ unsigned int esp;
+ unsigned int ebx;
+ unsigned int edx;
+ unsigned int ecx;
+ unsigned int eax;
+ unsigned int trapno;
+ unsigned int err;
+ unsigned int eip;
+ unsigned short cs, __csh;
+ unsigned int eflags;
+ unsigned int esp_at_signal;
+ unsigned short ss, __ssh;
+ unsigned int fpstate; /* really (struct _fpstate_ia32 *) */
+ unsigned int oldmask;
+ unsigned int cr2;
+};
+
+/* user.h */
+/*
+ * IA32 (Pentium III/4) FXSR, SSE support
+ *
+ * Provide support for the GDB 5.0+ PTRACE_{GET|SET}FPXREGS requests for
+ * interacting with the FXSR-format floating point environment. Floating
+ * point data can be accessed in the regular format in the usual manner,
+ * and both the standard and SIMD floating point data can be accessed via
+ * the new ptrace requests. In either case, changes to the FPU environment
+ * will be reflected in the task's state as expected.
+ */
+struct ia32_user_i387_struct {
+ int cwd;
+ int swd;
+ int twd;
+ int fip;
+ int fcs;
+ int foo;
+ int fos;
+ /* 8*10 bytes for each FP-reg = 80 bytes */
+ struct _fpreg_ia32 st_space[8];
+};
+
+struct ia32_user_fxsr_struct {
+ unsigned short cwd;
+ unsigned short swd;
+ unsigned short twd;
+ unsigned short fop;
+ int fip;
+ int fcs;
+ int foo;
+ int fos;
+ int mxcsr;
+ int reserved;
+ int st_space[32]; /* 8*16 bytes for each FP-reg = 128 bytes */
+ int xmm_space[32]; /* 8*16 bytes for each XMM-reg = 128 bytes */
+ int padding[56];
+};
+
+/* signal.h */
+#define IA32_SET_SA_HANDLER(ka,handler,restorer) \
+ ((ka)->sa.sa_handler = (__sighandler_t) \
+ (((unsigned long)(restorer) << 32) \
+ | ((handler) & 0xffffffff)))
+#define IA32_SA_HANDLER(ka) ((unsigned long) (ka)->sa.sa_handler & 0xffffffff)
+#define IA32_SA_RESTORER(ka) ((unsigned long) (ka)->sa.sa_handler >> 32)
+
+#define __IA32_NR_sigreturn 119
+#define __IA32_NR_rt_sigreturn 173
+
+struct sigaction32 {
+ unsigned int sa_handler; /* Really a pointer, but need to deal with 32 bits */
+ unsigned int sa_flags;
+ unsigned int sa_restorer; /* Another 32 bit pointer */
+ compat_sigset_t sa_mask; /* A 32 bit mask */
+};
+
+struct old_sigaction32 {
+ unsigned int sa_handler; /* Really a pointer, but need to deal
+ with 32 bits */
+ compat_old_sigset_t sa_mask; /* A 32 bit mask */
+ unsigned int sa_flags;
+ unsigned int sa_restorer; /* Another 32 bit pointer */
+};
+
+typedef struct sigaltstack_ia32 {
+ unsigned int ss_sp;
+ int ss_flags;
+ unsigned int ss_size;
+} stack_ia32_t;
+
+struct ucontext_ia32 {
+ unsigned int uc_flags;
+ unsigned int uc_link;
+ stack_ia32_t uc_stack;
+ struct sigcontext_ia32 uc_mcontext;
+ sigset_t uc_sigmask; /* mask last for extensibility */
+};
+
+struct stat64 {
+ unsigned long long st_dev;
+ unsigned char __pad0[4];
+ unsigned int __st_ino;
+ unsigned int st_mode;
+ unsigned int st_nlink;
+ unsigned int st_uid;
+ unsigned int st_gid;
+ unsigned long long st_rdev;
+ unsigned char __pad3[4];
+ unsigned int st_size_lo;
+ unsigned int st_size_hi;
+ unsigned int st_blksize;
+ unsigned int st_blocks; /* Number 512-byte blocks allocated. */
+ unsigned int __pad4; /* future possible st_blocks high bits */
+ unsigned int st_atime;
+ unsigned int st_atime_nsec;
+ unsigned int st_mtime;
+ unsigned int st_mtime_nsec;
+ unsigned int st_ctime;
+ unsigned int st_ctime_nsec;
+ unsigned int st_ino_lo;
+ unsigned int st_ino_hi;
+};
+
+typedef struct compat_siginfo {
+ int si_signo;
+ int si_errno;
+ int si_code;
+
+ union {
+ int _pad[((128/sizeof(int)) - 3)];
+
+ /* kill() */
+ struct {
+ unsigned int _pid; /* sender's pid */
+ unsigned int _uid; /* sender's uid */
+ } _kill;
+
+ /* POSIX.1b timers */
+ struct {
+ timer_t _tid; /* timer id */
+ int _overrun; /* overrun count */
+ char _pad[sizeof(unsigned int) - sizeof(int)];
+ compat_sigval_t _sigval; /* same as below */
+ int _sys_private; /* not to be passed to user */
+ } _timer;
+
+ /* POSIX.1b signals */
+ struct {
+ unsigned int _pid; /* sender's pid */
+ unsigned int _uid; /* sender's uid */
+ compat_sigval_t _sigval;
+ } _rt;
+
+ /* SIGCHLD */
+ struct {
+ unsigned int _pid; /* which child */
+ unsigned int _uid; /* sender's uid */
+ int _status; /* exit code */
+ compat_clock_t _utime;
+ compat_clock_t _stime;
+ } _sigchld;
+
+ /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */
+ struct {
+ unsigned int _addr; /* faulting insn/memory ref. */
+ } _sigfault;
+
+ /* SIGPOLL */
+ struct {
+ int _band; /* POLL_IN, POLL_OUT, POLL_MSG */
+ int _fd;
+ } _sigpoll;
+ } _sifields;
+} compat_siginfo_t;
+
+struct old_linux32_dirent {
+ u32 d_ino;
+ u32 d_offset;
+ u16 d_namlen;
+ char d_name[1];
+};
+
+/*
+ * IA-32 ELF specific definitions for IA-64.
+ */
+
+#define _ASM_IA64_ELF_H /* Don't include elf.h */
+
+#include <linux/sched.h>
+#include <asm/processor.h>
+
+/*
+ * This is used to ensure we don't load something for the wrong architecture.
+ */
+#define elf_check_arch(x) ((x)->e_machine == EM_386)
+
+/*
+ * These are used to set parameters in the core dumps.
+ */
+#define ELF_CLASS ELFCLASS32
+#define ELF_DATA ELFDATA2LSB
+#define ELF_ARCH EM_386
+
+#define IA32_PAGE_OFFSET 0xc0000000
+#define IA32_STACK_TOP IA32_PAGE_OFFSET
+#define IA32_GATE_OFFSET IA32_PAGE_OFFSET
+#define IA32_GATE_END IA32_PAGE_OFFSET + PAGE_SIZE
+
+/*
+ * The system segments (GDT, TSS, LDT) have to be mapped below 4GB so the IA-32 engine can
+ * access them.
+ */
+#define IA32_GDT_OFFSET (IA32_PAGE_OFFSET + PAGE_SIZE)
+#define IA32_TSS_OFFSET (IA32_PAGE_OFFSET + 2*PAGE_SIZE)
+#define IA32_LDT_OFFSET (IA32_PAGE_OFFSET + 3*PAGE_SIZE)
+
+#define ELF_EXEC_PAGESIZE IA32_PAGE_SIZE
+
+/*
+ * This is the location that an ET_DYN program is loaded if exec'ed.
+ * Typical use of this is to invoke "./ld.so someprog" to test out a
+ * new version of the loader. We need to make sure that it is out of
+ * the way of the program that it will "exec", and that there is
+ * sufficient room for the brk.
+ */
+#define ELF_ET_DYN_BASE (IA32_PAGE_OFFSET/3 + 0x1000000)
+
+void ia64_elf32_init(struct pt_regs *regs);
+#define ELF_PLAT_INIT(_r, load_addr) ia64_elf32_init(_r)
+
+#define elf_addr_t u32
+
+/* This macro yields a bitmask that programs can use to figure out
+ what instruction set this CPU supports. */
+#define ELF_HWCAP 0
+
+/* This macro yields a string that ld.so will use to load
+ implementation specific libraries for optimization. Not terribly
+ relevant until we have real hardware to play with... */
+#define ELF_PLATFORM NULL
+
+#ifdef __KERNEL__
+# define SET_PERSONALITY(EX,IBCS2) \
+ (current->personality = (IBCS2) ? PER_SVR4 : PER_LINUX)
+#endif
+
+#define IA32_EFLAG 0x200
+
+/*
+ * IA-32 ELF specific definitions for IA-64.
+ */
+
+#define __USER_CS 0x23
+#define __USER_DS 0x2B
+
+/*
+ * The per-cpu GDT has 32 entries: see <asm-i386/segment.h>
+ */
+#define GDT_ENTRIES 32
+
+#define GDT_SIZE (GDT_ENTRIES * 8)
+
+#define TSS_ENTRY 14
+#define LDT_ENTRY (TSS_ENTRY + 1)
+
+#define IA32_SEGSEL_RPL (0x3 << 0)
+#define IA32_SEGSEL_TI (0x1 << 2)
+#define IA32_SEGSEL_INDEX_SHIFT 3
+
+#define _TSS ((unsigned long) TSS_ENTRY << IA32_SEGSEL_INDEX_SHIFT)
+#define _LDT ((unsigned long) LDT_ENTRY << IA32_SEGSEL_INDEX_SHIFT)
+
+#define IA32_SEG_BASE 16
+#define IA32_SEG_TYPE 40
+#define IA32_SEG_SYS 44
+#define IA32_SEG_DPL 45
+#define IA32_SEG_P 47
+#define IA32_SEG_HIGH_LIMIT 48
+#define IA32_SEG_AVL 52
+#define IA32_SEG_DB 54
+#define IA32_SEG_G 55
+#define IA32_SEG_HIGH_BASE 56
+
+#define IA32_SEG_DESCRIPTOR(base, limit, segtype, nonsysseg, dpl, segpresent, avl, segdb, gran) \
+ (((limit) & 0xffff) \
+ | (((unsigned long) (base) & 0xffffff) << IA32_SEG_BASE) \
+ | ((unsigned long) (segtype) << IA32_SEG_TYPE) \
+ | ((unsigned long) (nonsysseg) << IA32_SEG_SYS) \
+ | ((unsigned long) (dpl) << IA32_SEG_DPL) \
+ | ((unsigned long) (segpresent) << IA32_SEG_P) \
+ | ((((unsigned long) (limit) >> 16) & 0xf) << IA32_SEG_HIGH_LIMIT) \
+ | ((unsigned long) (avl) << IA32_SEG_AVL) \
+ | ((unsigned long) (segdb) << IA32_SEG_DB) \
+ | ((unsigned long) (gran) << IA32_SEG_G) \
+ | ((((unsigned long) (base) >> 24) & 0xff) << IA32_SEG_HIGH_BASE))
+
+#define SEG_LIM 32
+#define SEG_TYPE 52
+#define SEG_SYS 56
+#define SEG_DPL 57
+#define SEG_P 59
+#define SEG_AVL 60
+#define SEG_DB 62
+#define SEG_G 63
+
+/* Unscramble an IA-32 segment descriptor into the IA-64 format. */
+#define IA32_SEG_UNSCRAMBLE(sd) \
+ ( (((sd) >> IA32_SEG_BASE) & 0xffffff) | ((((sd) >> IA32_SEG_HIGH_BASE) & 0xff) << 24) \
+ | ((((sd) & 0xffff) | ((((sd) >> IA32_SEG_HIGH_LIMIT) & 0xf) << 16)) << SEG_LIM) \
+ | ((((sd) >> IA32_SEG_TYPE) & 0xf) << SEG_TYPE) \
+ | ((((sd) >> IA32_SEG_SYS) & 0x1) << SEG_SYS) \
+ | ((((sd) >> IA32_SEG_DPL) & 0x3) << SEG_DPL) \
+ | ((((sd) >> IA32_SEG_P) & 0x1) << SEG_P) \
+ | ((((sd) >> IA32_SEG_AVL) & 0x1) << SEG_AVL) \
+ | ((((sd) >> IA32_SEG_DB) & 0x1) << SEG_DB) \
+ | ((((sd) >> IA32_SEG_G) & 0x1) << SEG_G))
+
+#define IA32_IOBASE 0x2000000000000000UL /* Virtual address for I/O space */
+
+#define IA32_CR0 0x80000001 /* Enable PG and PE bits */
+#define IA32_CR4 0x600 /* MMXEX and FXSR on */
+
+/*
+ * IA32 floating point control registers starting values
+ */
+
+#define IA32_FSR_DEFAULT 0x55550000 /* set all tag bits */
+#define IA32_FCR_DEFAULT 0x17800000037fUL /* extended precision, all masks */
+
+#define IA32_PTRACE_GETREGS 12
+#define IA32_PTRACE_SETREGS 13
+#define IA32_PTRACE_GETFPREGS 14
+#define IA32_PTRACE_SETFPREGS 15
+#define IA32_PTRACE_GETFPXREGS 18
+#define IA32_PTRACE_SETFPXREGS 19
+
+#define ia32_start_thread(regs,new_ip,new_sp) do { \
+ set_fs(USER_DS); \
+ ia64_psr(regs)->cpl = 3; /* set user mode */ \
+ ia64_psr(regs)->ri = 0; /* clear return slot number */ \
+ ia64_psr(regs)->is = 1; /* IA-32 instruction set */ \
+ regs->cr_iip = new_ip; \
+ regs->ar_rsc = 0xc; /* enforced lazy mode, priv. level 3 */ \
+ regs->ar_rnat = 0; \
+ regs->loadrs = 0; \
+ regs->r12 = new_sp; \
+} while (0)
+
+/*
+ * Local Descriptor Table (LDT) related declarations.
+ */
+
+#define IA32_LDT_ENTRIES 8192 /* Maximum number of LDT entries supported. */
+#define IA32_LDT_ENTRY_SIZE 8 /* The size of each LDT entry. */
+
+#define LDT_entry_a(info) \
+ ((((info)->base_addr & 0x0000ffff) << 16) | ((info)->limit & 0x0ffff))
+
+#define LDT_entry_b(info) \
+ (((info)->base_addr & 0xff000000) | \
+ (((info)->base_addr & 0x00ff0000) >> 16) | \
+ ((info)->limit & 0xf0000) | \
+ (((info)->read_exec_only ^ 1) << 9) | \
+ ((info)->contents << 10) | \
+ (((info)->seg_not_present ^ 1) << 15) | \
+ ((info)->seg_32bit << 22) | \
+ ((info)->limit_in_pages << 23) | \
+ ((info)->useable << 20) | \
+ 0x7100)
+
+#define LDT_empty(info) ( \
+ (info)->base_addr == 0 && \
+ (info)->limit == 0 && \
+ (info)->contents == 0 && \
+ (info)->read_exec_only == 1 && \
+ (info)->seg_32bit == 0 && \
+ (info)->limit_in_pages == 0 && \
+ (info)->seg_not_present == 1 && \
+ (info)->useable == 0 )
+
+static inline void
+load_TLS (struct thread_struct *t, unsigned int cpu)
+{
+ extern unsigned long *cpu_gdt_table[NR_CPUS];
+
+ memcpy(cpu_gdt_table[cpu] + GDT_ENTRY_TLS_MIN + 0, &t->tls_array[0], sizeof(long));
+ memcpy(cpu_gdt_table[cpu] + GDT_ENTRY_TLS_MIN + 1, &t->tls_array[1], sizeof(long));
+ memcpy(cpu_gdt_table[cpu] + GDT_ENTRY_TLS_MIN + 2, &t->tls_array[2], sizeof(long));
+}
+
+struct ia32_user_desc {
+ unsigned int entry_number;
+ unsigned int base_addr;
+ unsigned int limit;
+ unsigned int seg_32bit:1;
+ unsigned int contents:2;
+ unsigned int read_exec_only:1;
+ unsigned int limit_in_pages:1;
+ unsigned int seg_not_present:1;
+ unsigned int useable:1;
+};
+
+struct linux_binprm;
+
+extern void ia32_init_addr_space (struct pt_regs *regs);
+extern int ia32_setup_arg_pages (struct linux_binprm *bprm, int exec_stack);
+extern unsigned long ia32_do_mmap (struct file *, unsigned long, unsigned long, int, int, loff_t);
+extern void ia32_load_segment_descriptors (struct task_struct *task);
+
+#define ia32f2ia64f(dst,src) \
+do { \
+ ia64_ldfe(6,src); \
+ ia64_stop(); \
+ ia64_stf_spill(dst, 6); \
+} while(0)
+
+#define ia64f2ia32f(dst,src) \
+do { \
+ ia64_ldf_fill(6, src); \
+ ia64_stop(); \
+ ia64_stfe(dst, 6); \
+} while(0)
+
+struct user_regs_struct32 {
+ __u32 ebx, ecx, edx, esi, edi, ebp, eax;
+ unsigned short ds, __ds, es, __es;
+ unsigned short fs, __fs, gs, __gs;
+ __u32 orig_eax, eip;
+ unsigned short cs, __cs;
+ __u32 eflags, esp;
+ unsigned short ss, __ss;
+};
+
+/* Prototypes for use in elfcore32.h */
+extern int save_ia32_fpstate (struct task_struct *, struct ia32_user_i387_struct __user *);
+extern int save_ia32_fpxstate (struct task_struct *, struct ia32_user_fxsr_struct __user *);
+
+#endif /* !CONFIG_IA32_SUPPORT */
+
+#endif /* _ASM_IA64_IA32_PRIV_H */
diff --git a/arch/ia64/ia32/sys_ia32.c b/arch/ia64/ia32/sys_ia32.c
new file mode 100644
index 000000000000..247a21c64aea
--- /dev/null
+++ b/arch/ia64/ia32/sys_ia32.c
@@ -0,0 +1,2747 @@
+/*
+ * 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/config.h>
+#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/timex.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/nfs_fs.h>
+#include <linux/quota.h>
+#include <linux/sunrpc/svc.h>
+#include <linux/nfsd/nfsd.h>
+#include <linux/nfsd/cache.h>
+#include <linux/nfsd/xdr.h>
+#include <linux/nfsd/syscall.h>
+#include <linux/poll.h>
+#include <linux/eventpoll.h>
+#include <linux/personality.h>
+#include <linux/ptrace.h>
+#include <linux/stat.h>
+#include <linux/ipc.h>
+#include <linux/compat.h>
+#include <linux/vfs.h>
+#include <linux/mman.h>
+
+#include <asm/intrinsics.h>
+#include <asm/semaphore.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 DECLARE_MUTEX(ia32_mmap_sem);
+
+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;
+}
+
+int cp_compat_stat(struct kstat *stat, struct compat_stat __user *ubuf)
+{
+ int err;
+
+ if ((u64) stat->size > MAX_NON_LFS ||
+ !old_valid_dev(stat->dev) ||
+ !old_valid_dev(stat->rdev))
+ return -EOVERFLOW;
+
+ if (clear_user(ubuf, sizeof(*ubuf)))
+ return -EFAULT;
+
+ err = __put_user(old_encode_dev(stat->dev), &ubuf->st_dev);
+ err |= __put_user(stat->ino, &ubuf->st_ino);
+ err |= __put_user(stat->mode, &ubuf->st_mode);
+ err |= __put_user(stat->nlink, &ubuf->st_nlink);
+ err |= __put_user(high2lowuid(stat->uid), &ubuf->st_uid);
+ err |= __put_user(high2lowgid(stat->gid), &ubuf->st_gid);
+ err |= __put_user(old_encode_dev(stat->rdev), &ubuf->st_rdev);
+ err |= __put_user(stat->size, &ubuf->st_size);
+ err |= __put_user(stat->atime.tv_sec, &ubuf->st_atime);
+ err |= __put_user(stat->atime.tv_nsec, &ubuf->st_atime_nsec);
+ err |= __put_user(stat->mtime.tv_sec, &ubuf->st_mtime);
+ err |= __put_user(stat->mtime.tv_nsec, &ubuf->st_mtime_nsec);
+ err |= __put_user(stat->ctime.tv_sec, &ubuf->st_ctime);
+ err |= __put_user(stat->ctime.tv_nsec, &ubuf->st_ctime_nsec);
+ err |= __put_user(stat->blksize, &ubuf->st_blksize);
+ err |= __put_user(stat->blocks, &ubuf->st_blocks);
+ return err;
+}
+
+#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_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 partial_page structures */
+kmem_cache_t *partial_page_cachep;
+
+/*
+ * init partial_page_list.
+ * return 0 means kmalloc fail.
+ */
+struct partial_page_list*
+ia32_init_pp_list(void)
+{
+ struct 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 partial_page *
+__ia32_find_pp(struct partial_page_list *ppl, unsigned int start,
+ struct partial_page **pprev, struct rb_node ***rb_link,
+ struct rb_node **rb_parent)
+{
+ struct 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 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 partial_page, pp_rb);
+ return NULL;
+}
+
+/*
+ * insert @pp into @ppl.
+ */
+static void
+__ia32_insert_pp(struct partial_page_list *ppl, struct partial_page *pp,
+ struct 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 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 partial_page_list *ppl, struct partial_page *pp,
+ struct 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(partial_page_cachep, pp);
+}
+
+static struct partial_page *
+__pp_prev(struct partial_page *pp)
+{
+ struct rb_node *prev = rb_prev(&pp->pp_rb);
+ if (prev)
+ return rb_entry(prev, struct 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 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 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 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 partial_page */
+ pp = kmem_cache_alloc(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 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 partial_page */
+ pp = kmem_cache_alloc(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 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 partial_page_list *ppl)
+{
+ struct partial_page *pp = ppl->pp_head;
+
+ while (pp) {
+ struct partial_page *next = pp->next;
+ kmem_cache_free(partial_page_cachep, pp);
+ pp = next;
+ }
+
+ kfree(ppl);
+}
+
+void
+ia32_drop_partial_page_list(struct task_struct *task)
+{
+ struct 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 partial_page_list *ppl)
+{
+ struct 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(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_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, current->pid, 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, current->pid, 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, current->pid, 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_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 PAGE_SHIFT > IA32_PAGE_SHIFT
+ down(&ia32_mmap_sem);
+ {
+ addr = emulate_mmap(file, addr, len, prot, flags, offset);
+ }
+ up(&ia32_mmap_sem);
+#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;
+
+ down(&ia32_mmap_sem);
+ {
+ ret = sys_munmap(start, end - start);
+ }
+ up(&ia32_mmap_sem);
+#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;
+
+ down(&ia32_mmap_sem);
+ {
+ 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:
+ up(&ia32_mmap_sem);
+ 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;
+
+ down(&ia32_mmap_sem);
+ {
+ ret = sys_mremap(addr, old_len, new_len, flags, new_addr);
+ }
+ up(&ia32_mmap_sem);
+
+ if ((ret >= 0) && (old_len < new_len)) {
+ /* mremap expanded successfully */
+ ia32_set_pp(old_end, new_end, flags);
+ }
+#endif
+ return ret;
+}
+
+asmlinkage long
+sys32_pipe (int __user *fd)
+{
+ int retval;
+ int fds[2];
+
+ retval = do_pipe(fds);
+ if (retval)
+ goto out;
+ if (copy_to_user(fd, fds, sizeof(fds)))
+ retval = -EFAULT;
+ out:
+ return retval;
+}
+
+static inline long
+get_tv32 (struct timeval *o, struct compat_timeval __user *i)
+{
+ return (!access_ok(VERIFY_READ, i, sizeof(*i)) ||
+ (__get_user(o->tv_sec, &i->tv_sec) | __get_user(o->tv_usec, &i->tv_usec)));
+}
+
+static inline long
+put_tv32 (struct compat_timeval __user *o, struct timeval *i)
+{
+ return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) ||
+ (__put_user(i->tv_sec, &o->tv_sec) | __put_user(i->tv_usec, &o->tv_usec)));
+}
+
+asmlinkage unsigned long
+sys32_alarm (unsigned int seconds)
+{
+ struct itimerval it_new, it_old;
+ unsigned int oldalarm;
+
+ it_new.it_interval.tv_sec = it_new.it_interval.tv_usec = 0;
+ it_new.it_value.tv_sec = seconds;
+ it_new.it_value.tv_usec = 0;
+ do_setitimer(ITIMER_REAL, &it_new, &it_old);
+ oldalarm = it_old.it_value.tv_sec;
+ /* ehhh.. We can't return 0 if we have an alarm pending.. */
+ /* And we'd better return too much than too little anyway */
+ if (it_old.it_value.tv_usec)
+ oldalarm++;
+ return oldalarm;
+}
+
+/* Translations due to time_t size differences. Which affects all
+ sorts of things, like timeval and itimerval. */
+
+extern struct timezone sys_tz;
+
+asmlinkage long
+sys32_gettimeofday (struct compat_timeval __user *tv, struct timezone __user *tz)
+{
+ if (tv) {
+ struct timeval ktv;
+ do_gettimeofday(&ktv);
+ if (put_tv32(tv, &ktv))
+ return -EFAULT;
+ }
+ if (tz) {
+ if (copy_to_user(tz, &sys_tz, sizeof(sys_tz)))
+ return -EFAULT;
+ }
+ return 0;
+}
+
+asmlinkage long
+sys32_settimeofday (struct compat_timeval __user *tv, struct timezone __user *tz)
+{
+ struct timeval ktv;
+ struct timespec kts;
+ struct timezone ktz;
+
+ if (tv) {
+ if (get_tv32(&ktv, tv))
+ return -EFAULT;
+ kts.tv_sec = ktv.tv_sec;
+ kts.tv_nsec = ktv.tv_usec * 1000;
+ }
+ if (tz) {
+ if (copy_from_user(&ktz, tz, sizeof(ktz)))
+ return -EFAULT;
+ }
+
+ return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL);
+}
+
+struct getdents32_callback {
+ struct compat_dirent __user *current_dir;
+ struct compat_dirent __user *previous;
+ int count;
+ int error;
+};
+
+struct readdir32_callback {
+ struct old_linux32_dirent __user * dirent;
+ int count;
+};
+
+static int
+filldir32 (void *__buf, const char *name, int namlen, loff_t offset, ino_t ino,
+ unsigned int d_type)
+{
+ struct compat_dirent __user * dirent;
+ struct getdents32_callback * buf = (struct getdents32_callback *) __buf;
+ int reclen = ROUND_UP(offsetof(struct compat_dirent, d_name) + namlen + 1, 4);
+
+ buf->error = -EINVAL; /* only used if we fail.. */
+ if (reclen > buf->count)
+ return -EINVAL;
+ buf->error = -EFAULT; /* only used if we fail.. */
+ dirent = buf->previous;
+ if (dirent)
+ if (put_user(offset, &dirent->d_off))
+ return -EFAULT;
+ dirent = buf->current_dir;
+ buf->previous = dirent;
+ if (put_user(ino, &dirent->d_ino)
+ || put_user(reclen, &dirent->d_reclen)
+ || copy_to_user(dirent->d_name, name, namlen)
+ || put_user(0, dirent->d_name + namlen))
+ return -EFAULT;
+ dirent = (struct compat_dirent __user *) ((char __user *) dirent + reclen);
+ buf->current_dir = dirent;
+ buf->count -= reclen;
+ return 0;
+}
+
+asmlinkage long
+sys32_getdents (unsigned int fd, struct compat_dirent __user *dirent, unsigned int count)
+{
+ struct file * file;
+ struct compat_dirent __user * lastdirent;
+ struct getdents32_callback buf;
+ int error;
+
+ error = -EBADF;
+ file = fget(fd);
+ if (!file)
+ goto out;
+
+ buf.current_dir = dirent;
+ buf.previous = NULL;
+ buf.count = count;
+ buf.error = 0;
+
+ error = vfs_readdir(file, filldir32, &buf);
+ if (error < 0)
+ goto out_putf;
+ error = buf.error;
+ lastdirent = buf.previous;
+ if (lastdirent) {
+ error = -EINVAL;
+ if (put_user(file->f_pos, &lastdirent->d_off))
+ goto out_putf;
+ error = count - buf.count;
+ }
+
+out_putf:
+ fput(file);
+out:
+ return error;
+}
+
+static int
+fillonedir32 (void * __buf, const char * name, int namlen, loff_t offset, ino_t ino,
+ unsigned int d_type)
+{
+ struct readdir32_callback * buf = (struct readdir32_callback *) __buf;
+ struct old_linux32_dirent __user * dirent;
+
+ if (buf->count)
+ return -EINVAL;
+ buf->count++;
+ dirent = buf->dirent;
+ if (put_user(ino, &dirent->d_ino)
+ || put_user(offset, &dirent->d_offset)
+ || put_user(namlen, &dirent->d_namlen)
+ || copy_to_user(dirent->d_name, name, namlen)
+ || put_user(0, dirent->d_name + namlen))
+ return -EFAULT;
+ return 0;
+}
+
+asmlinkage long
+sys32_readdir (unsigned int fd, void __user *dirent, unsigned int count)
+{
+ int error;
+ struct file * file;
+ struct readdir32_callback buf;
+
+ error = -EBADF;
+ file = fget(fd);
+ if (!file)
+ goto out;
+
+ buf.count = 0;
+ buf.dirent = dirent;
+
+ error = vfs_readdir(file, fillonedir32, &buf);
+ if (error >= 0)
+ error = buf.count;
+ fput(file);
+out:
+ return error;
+}
+
+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);
+}
+
+static unsigned int
+ia32_peek (struct task_struct *child, unsigned long addr, unsigned int *val)
+{
+ size_t copied;
+ unsigned int ret;
+
+ copied = access_process_vm(child, addr, val, sizeof(*val), 0);
+ return (copied != sizeof(ret)) ? -EIO : 0;
+}
+
+static unsigned int
+ia32_poke (struct task_struct *child, unsigned long addr, unsigned int val)
+{
+
+ if (access_process_vm(child, addr, &val, sizeof(val), 1) != sizeof(val))
+ return -EIO;
+ return 0;
+}
+
+/*
+ * 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 = ia64_task_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 = ia64_task_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 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 = ia64_task_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 = ia64_task_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 = ia64_task_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 = ia64_task_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;
+}
+
+asmlinkage long
+sys32_ptrace (int request, pid_t pid, unsigned int addr, unsigned int data)
+{
+ struct task_struct *child;
+ unsigned int value, tmp;
+ long i, ret;
+
+ lock_kernel();
+ if (request == PTRACE_TRACEME) {
+ ret = sys_ptrace(request, pid, addr, data);
+ goto out;
+ }
+
+ ret = -ESRCH;
+ read_lock(&tasklist_lock);
+ child = find_task_by_pid(pid);
+ if (child)
+ get_task_struct(child);
+ read_unlock(&tasklist_lock);
+ if (!child)
+ goto out;
+ ret = -EPERM;
+ if (pid == 1) /* no messing around with init! */
+ goto out_tsk;
+
+ if (request == PTRACE_ATTACH) {
+ ret = sys_ptrace(request, pid, addr, data);
+ goto out_tsk;
+ }
+
+ ret = ptrace_check_attach(child, request == PTRACE_KILL);
+ if (ret < 0)
+ goto out_tsk;
+
+ switch (request) {
+ case PTRACE_PEEKTEXT:
+ case PTRACE_PEEKDATA: /* read word at location addr */
+ ret = ia32_peek(child, addr, &value);
+ if (ret == 0)
+ ret = put_user(value, (unsigned int __user *) compat_ptr(data));
+ else
+ ret = -EIO;
+ goto out_tsk;
+
+ case PTRACE_POKETEXT:
+ case PTRACE_POKEDATA: /* write the word at location addr */
+ ret = ia32_poke(child, addr, data);
+ goto out_tsk;
+
+ 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;
+
+ case PTRACE_GETEVENTMSG:
+ ret = put_user(child->ptrace_message, (unsigned int __user *) compat_ptr(data));
+ break;
+
+ case PTRACE_SYSCALL: /* continue, stop after next syscall */
+ case PTRACE_CONT: /* restart after signal. */
+ case PTRACE_KILL:
+ case PTRACE_SINGLESTEP: /* execute chile for one instruction */
+ case PTRACE_DETACH: /* detach a process */
+ ret = sys_ptrace(request, pid, addr, data);
+ break;
+
+ default:
+ ret = ptrace_request(child, request, addr, data);
+ break;
+
+ }
+ out_tsk:
+ put_task_struct(child);
+ out:
+ unlock_kernel();
+ 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_pause (void)
+{
+ current->state = TASK_INTERRUPTIBLE;
+ schedule();
+ return -ERESTARTNOHAND;
+}
+
+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);
+}
+
+struct sysctl32 {
+ unsigned int name;
+ int nlen;
+ unsigned int oldval;
+ unsigned int oldlenp;
+ unsigned int newval;
+ unsigned int newlen;
+ unsigned int __unused[4];
+};
+
+#ifdef CONFIG_SYSCTL
+asmlinkage long
+sys32_sysctl (struct sysctl32 __user *args)
+{
+ struct sysctl32 a32;
+ mm_segment_t old_fs = get_fs ();
+ void __user *oldvalp, *newvalp;
+ size_t oldlen;
+ int __user *namep;
+ long ret;
+
+ if (copy_from_user(&a32, args, sizeof(a32)))
+ return -EFAULT;
+
+ /*
+ * We need to pre-validate these because we have to disable address checking
+ * before calling do_sysctl() because of OLDLEN but we can't run the risk of the
+ * user specifying bad addresses here. Well, since we're dealing with 32 bit
+ * addresses, we KNOW that access_ok() will always succeed, so this is an
+ * expensive NOP, but so what...
+ */
+ namep = (int __user *) compat_ptr(a32.name);
+ oldvalp = compat_ptr(a32.oldval);
+ newvalp = compat_ptr(a32.newval);
+
+ if ((oldvalp && get_user(oldlen, (int __user *) compat_ptr(a32.oldlenp)))
+ || !access_ok(VERIFY_WRITE, namep, 0)
+ || !access_ok(VERIFY_WRITE, oldvalp, 0)
+ || !access_ok(VERIFY_WRITE, newvalp, 0))
+ return -EFAULT;
+
+ set_fs(KERNEL_DS);
+ lock_kernel();
+ ret = do_sysctl(namep, a32.nlen, oldvalp, (size_t __user *) &oldlen,
+ newvalp, (size_t) a32.newlen);
+ unlock_kernel();
+ set_fs(old_fs);
+
+ if (oldvalp && put_user (oldlen, (int __user *) compat_ptr(a32.oldlenp)))
+ return -EFAULT;
+
+ return ret;
+}
+#endif
+
+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)
+{
+ int i;
+
+ if (gidsetsize < 0)
+ return -EINVAL;
+
+ get_group_info(current->group_info);
+ i = current->group_info->ngroups;
+ if (gidsetsize) {
+ if (i > gidsetsize) {
+ i = -EINVAL;
+ goto out;
+ }
+ if (groups16_to_user(grouplist, current->group_info)) {
+ i = -EFAULT;
+ goto out;
+ }
+ }
+out:
+ put_group_info(current->group_info);
+ 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;
+}
+
+struct sysinfo32 {
+ s32 uptime;
+ u32 loads[3];
+ u32 totalram;
+ u32 freeram;
+ u32 sharedram;
+ u32 bufferram;
+ u32 totalswap;
+ u32 freeswap;
+ u16 procs;
+ u16 pad;
+ u32 totalhigh;
+ u32 freehigh;
+ u32 mem_unit;
+ char _f[8];
+};
+
+asmlinkage long
+sys32_sysinfo (struct sysinfo32 __user *info)
+{
+ struct sysinfo s;
+ long ret, err;
+ int bitcount = 0;
+ mm_segment_t old_fs = get_fs();
+
+ set_fs(KERNEL_DS);
+ ret = sys_sysinfo((struct sysinfo __user *) &s);
+ set_fs(old_fs);
+ /* Check to see if any memory value is too large for 32-bit and
+ * scale down if needed.
+ */
+ if ((s.totalram >> 32) || (s.totalswap >> 32)) {
+ while (s.mem_unit < PAGE_SIZE) {
+ s.mem_unit <<= 1;
+ bitcount++;
+ }
+ s.totalram >>= bitcount;
+ s.freeram >>= bitcount;
+ s.sharedram >>= bitcount;
+ s.bufferram >>= bitcount;
+ s.totalswap >>= bitcount;
+ s.freeswap >>= bitcount;
+ s.totalhigh >>= bitcount;
+ s.freehigh >>= bitcount;
+ }
+
+ if (!access_ok(VERIFY_WRITE, info, sizeof(*info)))
+ return -EFAULT;
+
+ err = __put_user(s.uptime, &info->uptime);
+ err |= __put_user(s.loads[0], &info->loads[0]);
+ err |= __put_user(s.loads[1], &info->loads[1]);
+ err |= __put_user(s.loads[2], &info->loads[2]);
+ err |= __put_user(s.totalram, &info->totalram);
+ err |= __put_user(s.freeram, &info->freeram);
+ err |= __put_user(s.sharedram, &info->sharedram);
+ err |= __put_user(s.bufferram, &info->bufferram);
+ err |= __put_user(s.totalswap, &info->totalswap);
+ err |= __put_user(s.freeswap, &info->freeswap);
+ err |= __put_user(s.procs, &info->procs);
+ err |= __put_user (s.totalhigh, &info->totalhigh);
+ err |= __put_user (s.freehigh, &info->freehigh);
+ err |= __put_user (s.mem_unit, &info->mem_unit);
+ if (err)
+ return -EFAULT;
+ 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 (!ret && 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;
+}
+
+/*
+ * Exactly like fs/open.c:sys_open(), except that it doesn't set the O_LARGEFILE flag.
+ */
+asmlinkage long
+sys32_open (const char __user * filename, int flags, int mode)
+{
+ char * tmp;
+ int fd, error;
+
+ tmp = getname(filename);
+ fd = PTR_ERR(tmp);
+ if (!IS_ERR(tmp)) {
+ fd = get_unused_fd();
+ if (fd >= 0) {
+ struct file *f = filp_open(tmp, flags, mode);
+ error = PTR_ERR(f);
+ if (IS_ERR(f))
+ goto out_error;
+ fd_install(fd, f);
+ }
+out:
+ putname(tmp);
+ }
+ return fd;
+
+out_error:
+ put_unused_fd(fd);
+ fd = error;
+ goto out;
+}
+
+/* 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 error, 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;
+}
+
+/*
+ * Set a given TLS descriptor:
+ */
+asmlinkage int
+sys32_set_thread_area (struct ia32_user_desc __user *u_info)
+{
+ struct thread_struct *t = &current->thread;
+ struct ia32_user_desc info;
+ struct desc_struct *desc;
+ int cpu, 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;
+
+ desc = t->tls_array + idx - GDT_ENTRY_TLS_MIN;
+
+ cpu = smp_processor_id();
+
+ if (LDT_empty(&info)) {
+ desc->a = 0;
+ desc->b = 0;
+ } else {
+ desc->a = LDT_entry_a(&info);
+ desc->b = LDT_entry_b(&info);
+ }
+ load_TLS(t, cpu);
+ 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)
+
+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;
+
+ 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);
+
+ if (copy_to_user(u_info, &info, sizeof(info)))
+ return -EFAULT;
+ return 0;
+}
+
+asmlinkage long
+sys32_timer_create(u32 clock, struct compat_sigevent __user *se32, timer_t __user *timer_id)
+{
+ struct sigevent se;
+ mm_segment_t oldfs;
+ timer_t t;
+ long err;
+
+ if (se32 == NULL)
+ return sys_timer_create(clock, NULL, timer_id);
+
+ if (get_compat_sigevent(&se, se32))
+ return -EFAULT;
+
+ if (!access_ok(VERIFY_WRITE,timer_id,sizeof(timer_t)))
+ return -EFAULT;
+
+ oldfs = get_fs();
+ set_fs(KERNEL_DS);
+ err = sys_timer_create(clock, (struct sigevent __user *) &se, (timer_t __user *) &t);
+ set_fs(oldfs);
+
+ if (!err)
+ err = __put_user (t, timer_id);
+
+ return err;
+}
+
+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);
+}
+
+/* Handle adjtimex compatibility. */
+
+struct timex32 {
+ u32 modes;
+ s32 offset, freq, maxerror, esterror;
+ s32 status, constant, precision, tolerance;
+ struct compat_timeval time;
+ s32 tick;
+ s32 ppsfreq, jitter, shift, stabil;
+ s32 jitcnt, calcnt, errcnt, stbcnt;
+ s32 :32; s32 :32; s32 :32; s32 :32;
+ s32 :32; s32 :32; s32 :32; s32 :32;
+ s32 :32; s32 :32; s32 :32; s32 :32;
+};
+
+extern int do_adjtimex(struct timex *);
+
+asmlinkage long
+sys32_adjtimex(struct timex32 *utp)
+{
+ struct timex txc;
+ int ret;
+
+ memset(&txc, 0, sizeof(struct timex));
+
+ if(get_user(txc.modes, &utp->modes) ||
+ __get_user(txc.offset, &utp->offset) ||
+ __get_user(txc.freq, &utp->freq) ||
+ __get_user(txc.maxerror, &utp->maxerror) ||
+ __get_user(txc.esterror, &utp->esterror) ||
+ __get_user(txc.status, &utp->status) ||
+ __get_user(txc.constant, &utp->constant) ||
+ __get_user(txc.precision, &utp->precision) ||
+ __get_user(txc.tolerance, &utp->tolerance) ||
+ __get_user(txc.time.tv_sec, &utp->time.tv_sec) ||
+ __get_user(txc.time.tv_usec, &utp->time.tv_usec) ||
+ __get_user(txc.tick, &utp->tick) ||
+ __get_user(txc.ppsfreq, &utp->ppsfreq) ||
+ __get_user(txc.jitter, &utp->jitter) ||
+ __get_user(txc.shift, &utp->shift) ||
+ __get_user(txc.stabil, &utp->stabil) ||
+ __get_user(txc.jitcnt, &utp->jitcnt) ||
+ __get_user(txc.calcnt, &utp->calcnt) ||
+ __get_user(txc.errcnt, &utp->errcnt) ||
+ __get_user(txc.stbcnt, &utp->stbcnt))
+ return -EFAULT;
+
+ ret = do_adjtimex(&txc);
+
+ if(put_user(txc.modes, &utp->modes) ||
+ __put_user(txc.offset, &utp->offset) ||
+ __put_user(txc.freq, &utp->freq) ||
+ __put_user(txc.maxerror, &utp->maxerror) ||
+ __put_user(txc.esterror, &utp->esterror) ||
+ __put_user(txc.status, &utp->status) ||
+ __put_user(txc.constant, &utp->constant) ||
+ __put_user(txc.precision, &utp->precision) ||
+ __put_user(txc.tolerance, &utp->tolerance) ||
+ __put_user(txc.time.tv_sec, &utp->time.tv_sec) ||
+ __put_user(txc.time.tv_usec, &utp->time.tv_usec) ||
+ __put_user(txc.tick, &utp->tick) ||
+ __put_user(txc.ppsfreq, &utp->ppsfreq) ||
+ __put_user(txc.jitter, &utp->jitter) ||
+ __put_user(txc.shift, &utp->shift) ||
+ __put_user(txc.stabil, &utp->stabil) ||
+ __put_user(txc.jitcnt, &utp->jitcnt) ||
+ __put_user(txc.calcnt, &utp->calcnt) ||
+ __put_user(txc.errcnt, &utp->errcnt) ||
+ __put_user(txc.stbcnt, &utp->stbcnt))
+ ret = -EFAULT;
+
+ return ret;
+}
+#endif /* NOTYET */