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[IA64] Remove COMPAT_IA32 support

Browse Source 
This has been broken since May 2008 when Al Viro killed altroot support.
Since nobody has complained, it would appear that there are no users of
this code (A plausible theory since the main OSVs that support ia64 prefer
to use the IA32-EL software emulation).

Signed-off-by: Tony Luck <tony.luck@intel.com>
This commit is contained in:
Tony Luck 2010-02-08 10:42:17 -08:00
parent 6339204ecc
commit 32974ad490
38 changed files with 20 additions and 6323 deletions
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17
arch/ia64/Kconfig
View File

@ -499,23 +499,6 @@ config ARCH_PROC_KCORE_TEXT
def_bool y
depends on PROC_KCORE
config IA32_SUPPORT
bool "Support for Linux/x86 binaries"
help
IA-64 processors can execute IA-32 (X86) instructions. By
saying Y here, the kernel will include IA-32 system call
emulation support which makes it possible to transparently
run IA-32 Linux binaries on an IA-64 Linux system.
If in doubt, say Y.
config COMPAT
bool
depends on IA32_SUPPORT
default y
config COMPAT_FOR_U64_ALIGNMENT
def_bool COMPAT
config IA64_MCA_RECOVERY
tristate "MCA recovery from errors other than TLB."

1
arch/ia64/Makefile
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@ -46,7 +46,6 @@ head-y := arch/ia64/kernel/head.o arch/ia64/kernel/init_task.o
libs-y += arch/ia64/lib/
core-y += arch/ia64/kernel/ arch/ia64/mm/
core-$(CONFIG_IA32_SUPPORT) += arch/ia64/ia32/
core-$(CONFIG_IA64_DIG) += arch/ia64/dig/
core-$(CONFIG_IA64_DIG_VTD) += arch/ia64/dig/
core-$(CONFIG_IA64_GENERIC) += arch/ia64/dig/

2
arch/ia64/configs/bigsur_defconfig
View File

@ -131,8 +131,6 @@ CONFIG_ARCH_DISCONTIGMEM_ENABLE=y
CONFIG_ARCH_FLATMEM_ENABLE=y
CONFIG_ARCH_SPARSEMEM_ENABLE=y
# CONFIG_VIRTUAL_MEM_MAP is not set
CONFIG_IA32_SUPPORT=y
CONFIG_COMPAT=y
# CONFIG_IA64_MCA_RECOVERY is not set
CONFIG_PERFMON=y
CONFIG_IA64_PALINFO=y

2
arch/ia64/configs/generic_defconfig
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@ -205,8 +205,6 @@ CONFIG_VIRTUAL_MEM_MAP=y
CONFIG_HOLES_IN_ZONE=y
CONFIG_HAVE_ARCH_EARLY_PFN_TO_NID=y
CONFIG_HAVE_ARCH_NODEDATA_EXTENSION=y
CONFIG_IA32_SUPPORT=y
CONFIG_COMPAT=y
CONFIG_COMPAT_FOR_U64_ALIGNMENT=y
CONFIG_IA64_MCA_RECOVERY=y
CONFIG_PERFMON=y

2
arch/ia64/configs/gensparse_defconfig
View File

@ -139,8 +139,6 @@ CONFIG_ARCH_SPARSEMEM_ENABLE=y
CONFIG_ARCH_DISCONTIGMEM_DEFAULT=y
CONFIG_NUMA=y
CONFIG_HAVE_ARCH_EARLY_PFN_TO_NID=y
CONFIG_IA32_SUPPORT=y
CONFIG_COMPAT=y
CONFIG_IA64_MCA_RECOVERY=y
CONFIG_PERFMON=y
CONFIG_IA64_PALINFO=y

2
arch/ia64/configs/sim_defconfig
View File

@ -130,8 +130,6 @@ CONFIG_ARCH_DISCONTIGMEM_ENABLE=y
CONFIG_ARCH_FLATMEM_ENABLE=y
CONFIG_ARCH_SPARSEMEM_ENABLE=y
# CONFIG_VIRTUAL_MEM_MAP is not set
CONFIG_IA32_SUPPORT=y
CONFIG_COMPAT=y
# CONFIG_IA64_MCA_RECOVERY is not set
# CONFIG_PERFMON is not set
CONFIG_IA64_PALINFO=m

1
arch/ia64/configs/tiger_defconfig
View File

@ -154,7 +154,6 @@ CONFIG_ARCH_SPARSEMEM_ENABLE=y
CONFIG_ARCH_POPULATES_NODE_MAP=y
CONFIG_VIRTUAL_MEM_MAP=y
CONFIG_HOLES_IN_ZONE=y
# CONFIG_IA32_SUPPORT is not set
CONFIG_IA64_MCA_RECOVERY=y
CONFIG_PERFMON=y
CONFIG_IA64_PALINFO=y

2
arch/ia64/configs/xen_domu_defconfig
View File

@ -200,8 +200,6 @@ CONFIG_ARCH_SPARSEMEM_ENABLE=y
CONFIG_ARCH_POPULATES_NODE_MAP=y
CONFIG_VIRTUAL_MEM_MAP=y
CONFIG_HOLES_IN_ZONE=y
# CONFIG_IA32_SUPPORT is not set
# CONFIG_COMPAT_FOR_U64_ALIGNMENT is not set
CONFIG_IA64_MCA_RECOVERY=y
CONFIG_PERFMON=y
CONFIG_IA64_PALINFO=y

2
arch/ia64/configs/zx1_defconfig
View File

@ -150,8 +150,6 @@ CONFIG_ARCH_DISCONTIGMEM_DEFAULT=y
CONFIG_ARCH_POPULATES_NODE_MAP=y
CONFIG_VIRTUAL_MEM_MAP=y
CONFIG_HOLES_IN_ZONE=y
CONFIG_IA32_SUPPORT=y
CONFIG_COMPAT=y
CONFIG_IA64_MCA_RECOVERY=y
CONFIG_PERFMON=y
CONFIG_IA64_PALINFO=y

11
arch/ia64/ia32/Makefile
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@ -1,11 +0,0 @@
#
# Makefile for the ia32 kernel emulation subsystem.
#
obj-y := ia32_entry.o sys_ia32.o ia32_signal.o \
ia32_support.o ia32_traps.o binfmt_elf32.o ia32_ldt.o
obj-$(CONFIG_AUDIT) += audit.o
# 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

42
arch/ia64/ia32/audit.c
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@ -1,42 +0,0 @@
#include "../../x86/include/asm/unistd_32.h"
unsigned ia32_dir_class[] = {
#include <asm-generic/audit_dir_write.h>
~0U
};
unsigned ia32_chattr_class[] = {
#include <asm-generic/audit_change_attr.h>
~0U
};
unsigned ia32_write_class[] = {
#include <asm-generic/audit_write.h>
~0U
};
unsigned ia32_read_class[] = {
#include <asm-generic/audit_read.h>
~0U
};
unsigned ia32_signal_class[] = {
#include <asm-generic/audit_signal.h>
~0U
};
int ia32_classify_syscall(unsigned syscall)
{
switch(syscall) {
case __NR_open:
return 2;
case __NR_openat:
return 3;
case __NR_socketcall:
return 4;
case __NR_execve:
return 5;
default:
return 1;
}
}

245
arch/ia64/ia32/binfmt_elf32.c
View File

@ -1,245 +0,0 @@
/*
* 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/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);
static unsigned long __attribute ((unused))
randomize_stack_top(unsigned long stack_top);
#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) 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;
int
ia32_install_shared_page (struct vm_area_struct *vma, struct vm_fault *vmf)
{
vmf->page = ia32_shared_page[smp_processor_id()];
get_page(vmf->page);
return 0;
}
int
ia32_install_gate_page (struct vm_area_struct *vma, struct vm_fault *vmf)
{
vmf->page = ia32_gate_page;
get_page(vmf->page);
return 0;
}
static const struct vm_operations_struct ia32_shared_page_vm_ops = {
.fault = ia32_install_shared_page
};
static const struct vm_operations_struct ia32_gate_page_vm_ops = {
.fault = 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_zalloc(vm_area_cachep, GFP_KERNEL);
if (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_zalloc(vm_area_cachep, GFP_KERNEL);
if (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_zalloc(vm_area_cachep, GFP_KERNEL);
if (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);
}
/*
* Undo the override of setup_arg_pages() without this ia32_setup_arg_pages()
* will suffer infinite self recursion.
*/
#undef setup_arg_pages
int
ia32_setup_arg_pages (struct linux_binprm *bprm, int executable_stack)
{
int ret;
ret = setup_arg_pages(bprm, IA32_STACK_TOP, executable_stack);
if (!ret) {
/*
* 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 ret;
}
static void
elf32_set_personality (void)
{
set_personality(PER_LINUX32);
current->thread.map_base = IA32_PAGE_OFFSET/3;
}
static unsigned long
elf32_map(struct file *filep, unsigned long addr, struct elf_phdr *eppnt,
int prot, int type, unsigned long unused)
{
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");
unregister_binfmt(&elf_format);
}
return 0;
}
module_init(check_elf32_binfmt)

148
arch/ia64/ia32/elfcore32.h
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@ -1,148 +0,0 @@
/*
* 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>
/* 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 */
};
#ifdef CONFIG_VIRT_CPU_ACCOUNTING
/*
* Hacks are here since types between compat_timeval (= pair of s32) and
* ia64-native timeval (= pair of s64) are not compatible, at least a file
* arch/ia64/ia32/../../../fs/binfmt_elf.c will get warnings from compiler on
* use of cputime_to_timeval(), which usually an alias of jiffies_to_timeval().
*/
#define cputime_to_timeval(a,b) \
do { (b)->tv_usec = 0; (b)->tv_sec = (a)/NSEC_PER_SEC; } while(0)
#else
#define jiffies_to_timeval(a,b) \
do { (b)->tv_usec = 0; (b)->tv_sec = (a)/HZ; } while(0)
#endif
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)
{
ELF_CORE_COPY_REGS((*elfregs), task_pt_regs(t));
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
#define ELF_CORE_XFPREG_TYPE NT_PRXFPREG
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_ */

468
arch/ia64/ia32/ia32_entry.S
View File

@ -1,468 +0,0 @@
#include <asm/asmmacro.h>
#include <asm/ia32.h>
#include <asm/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)
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 through
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
cmp.lt p6,p0=r8,r0 // check tracehook
adds r2=IA64_PT_REGS_R8_OFFSET+16,sp // r2 = &pt_regs.r8
;;
(p6) st8.spill [r2]=r8 // store return value in slot for r8
(p6) br.spnt.few .ret4
.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 compat_sys_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 compat_sys_ptrace
data8 sys32_alarm
data8 sys_ni_syscall
data8 sys_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 sys_ia64_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 compat_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 compat_sys_gettimeofday
data8 compat_sys_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 compat_sys_old_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 compat_sys_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 compat_sys_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 sys32_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 compat_sys_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 compat_sys_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 compat_sys_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

146
arch/ia64/ia32/ia32_ldt.c
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@ -1,146 +0,0 @@
/*
* 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/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;
}

1010
arch/ia64/ia32/ia32_signal.c
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File diff suppressed because it is too large Load Diff

253
arch/ia64/ia32/ia32_support.c
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@ -1,253 +0,0 @@
/*
* 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/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 int die_if_kernel (char *str, struct pt_regs *regs, long err);
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 = task_pt_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 = task_pt_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;
if (die_if_kernel("Bad IA-32 interrupt", regs, int_num))
return;
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)
{
#if PAGE_SHIFT > IA32_PAGE_SHIFT
{
extern struct kmem_cache *ia64_partial_page_cachep;
ia64_partial_page_cachep = kmem_cache_create("ia64_partial_page_cache",
sizeof(struct ia64_partial_page),
0, SLAB_PANIC, NULL);
}
#endif
return 0;
}
__initcall(ia32_init);

156
arch/ia64/ia32/ia32_traps.c
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/*
* 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;
}

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arch/ia64/ia32/ia32priv.h
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#ifndef _ASM_IA64_IA32_PRIV_H
#define _ASM_IA64_IA32_PRIV_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 ia64_partial_page {
struct ia64_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*64
* should suffice.*/
unsigned long bitmap;
unsigned int base;
};
struct ia64_partial_page_list {
struct ia64_partial_page *pp_head; /* list head, points to the lowest
* addressed partial page */
struct rb_root ppl_rb;
struct ia64_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 ia64_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 {
compat_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;
/*
* IA-32 ELF specific definitions for IA-64.
*/
#define _ASM_IA64_ELF_H /* Don't include elf.h */
#include <linux/sched.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_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)
/* 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) \
(current->personality = 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 */

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arch/ia64/ia32/sys_ia32.c
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arch/ia64/include/asm/ia32.h
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#ifndef _ASM_IA64_IA32_H
#define _ASM_IA64_IA32_H
#include <asm/ptrace.h>
#include <asm/signal.h>
#define IA32_NR_syscalls 285 /* length of syscall table */
#define IA32_PAGE_SHIFT 12 /* 4KB pages */
#ifndef __ASSEMBLY__
# ifdef CONFIG_IA32_SUPPORT
#define IA32_PAGE_OFFSET 0xc0000000
extern void ia32_cpu_init (void);
extern void ia32_mem_init (void);
extern void ia32_gdt_init (void);
extern int ia32_exception (struct pt_regs *regs, unsigned long isr);
extern int ia32_intercept (struct pt_regs *regs, unsigned long isr);
extern int ia32_clone_tls (struct task_struct *child, struct pt_regs *childregs);
# endif /* !CONFIG_IA32_SUPPORT */
/* Declare this unconditionally, so we don't get warnings for unreachable code. */
extern int ia32_setup_frame1 (int sig, struct k_sigaction *ka, siginfo_t *info,
sigset_t *set, struct pt_regs *regs);
#if PAGE_SHIFT > IA32_PAGE_SHIFT
extern int ia32_copy_ia64_partial_page_list(struct task_struct *,
unsigned long);
extern void ia32_drop_ia64_partial_page_list(struct task_struct *);
#else
# define ia32_copy_ia64_partial_page_list(a1, a2) 0
# define ia32_drop_ia64_partial_page_list(a1) do { ; } while (0)
#endif
#endif /* !__ASSEMBLY__ */
#endif /* _ASM_IA64_IA32_H */

46
arch/ia64/include/asm/processor.h
View File

@ -270,23 +270,6 @@ typedef struct {
(int __user *) (addr)); \
})
#ifdef CONFIG_IA32_SUPPORT
struct desc_struct {
unsigned int a, b;
};
#define desc_empty(desc) (!((desc)->a | (desc)->b))
#define desc_equal(desc1, desc2) (((desc1)->a == (desc2)->a) && ((desc1)->b == (desc2)->b))
#define GDT_ENTRY_TLS_ENTRIES 3
#define GDT_ENTRY_TLS_MIN 6
#define GDT_ENTRY_TLS_MAX (GDT_ENTRY_TLS_MIN + GDT_ENTRY_TLS_ENTRIES - 1)
#define TLS_SIZE (GDT_ENTRY_TLS_ENTRIES * 8)
struct ia64_partial_page_list;
#endif
struct thread_struct {
__u32 flags; /* various thread flags (see IA64_THREAD_*) */
/* writing on_ustack is performance-critical, so it's worth spending 8 bits on it... */
@ -298,29 +281,6 @@ struct thread_struct {
__u64 rbs_bot; /* the base address for the RBS */
int last_fph_cpu; /* CPU that may hold the contents of f32-f127 */
#ifdef CONFIG_IA32_SUPPORT
__u64 eflag; /* IA32 EFLAGS reg */
__u64 fsr; /* IA32 floating pt status reg */
__u64 fcr; /* IA32 floating pt control reg */
__u64 fir; /* IA32 fp except. instr. reg */
__u64 fdr; /* IA32 fp except. data reg */
__u64 old_k1; /* old value of ar.k1 */
__u64 old_iob; /* old IOBase value */
struct ia64_partial_page_list *ppl; /* partial page list for 4K page size issue */
/* cached TLS descriptors. */
struct desc_struct tls_array[GDT_ENTRY_TLS_ENTRIES];
# define INIT_THREAD_IA32 .eflag = 0, \
.fsr = 0, \
.fcr = 0x17800000037fULL, \
.fir = 0, \
.fdr = 0, \
.old_k1 = 0, \
.old_iob = 0, \
.ppl = NULL,
#else
# define INIT_THREAD_IA32
#endif /* CONFIG_IA32_SUPPORT */
#ifdef CONFIG_PERFMON
void *pfm_context; /* pointer to detailed PMU context */
unsigned long pfm_needs_checking; /* when >0, pending perfmon work on kernel exit */
@ -342,7 +302,6 @@ struct thread_struct {
.rbs_bot = STACK_TOP - DEFAULT_USER_STACK_SIZE, \
.task_size = DEFAULT_TASK_SIZE, \
.last_fph_cpu = -1, \
INIT_THREAD_IA32 \
INIT_THREAD_PM \
.dbr = {0, }, \
.ibr = {0, }, \
@ -485,11 +444,6 @@ extern void __ia64_load_fpu (struct ia64_fpreg *fph);
extern void ia64_save_debug_regs (unsigned long *save_area);
extern void ia64_load_debug_regs (unsigned long *save_area);
#ifdef CONFIG_IA32_SUPPORT
extern void ia32_save_state (struct task_struct *task);
extern void ia32_load_state (struct task_struct *task);
#endif
#define ia64_fph_enable() do { ia64_rsm(IA64_PSR_DFH); ia64_srlz_d(); } while (0)
#define ia64_fph_disable() do { ia64_ssm(IA64_PSR_DFH); ia64_srlz_d(); } while (0)

81
arch/ia64/include/asm/syscall.h
View File

@ -22,33 +22,18 @@ static inline long syscall_get_nr(struct task_struct *task,
if ((long)regs->cr_ifs < 0) /* Not a syscall */
return -1;
#ifdef CONFIG_IA32_SUPPORT
if (IS_IA32_PROCESS(regs))
return regs->r1;
#endif
return regs->r15;
}
static inline void syscall_rollback(struct task_struct *task,
struct pt_regs *regs)
{
#ifdef CONFIG_IA32_SUPPORT
if (IS_IA32_PROCESS(regs))
regs->r8 = regs->r1;
#endif
/* do nothing */
}
static inline long syscall_get_error(struct task_struct *task,
struct pt_regs *regs)
{
#ifdef CONFIG_IA32_SUPPORT
if (IS_IA32_PROCESS(regs))
return regs->r8;
#endif
return regs->r10 == -1 ? regs->r8:0;
}
@ -62,13 +47,6 @@ static inline void syscall_set_return_value(struct task_struct *task,
struct pt_regs *regs,
int error, long val)
{
#ifdef CONFIG_IA32_SUPPORT
if (IS_IA32_PROCESS(regs)) {
regs->r8 = (long) error ? error : val;
return;
}
#endif
if (error) {
/* error < 0, but ia64 uses > 0 return value */
regs->r8 = -error;
@ -89,37 +67,6 @@ static inline void syscall_get_arguments(struct task_struct *task,
{
BUG_ON(i + n > 6);
#ifdef CONFIG_IA32_SUPPORT
if (IS_IA32_PROCESS(regs)) {
switch (i + n) {
case 6:
if (!n--) break;
*args++ = regs->r13;
case 5:
if (!n--) break;
*args++ = regs->r15;
case 4:
if (!n--) break;
*args++ = regs->r14;
case 3:
if (!n--) break;
*args++ = regs->r10;
case 2:
if (!n--) break;
*args++ = regs->r9;
case 1:
if (!n--) break;
*args++ = regs->r11;
case 0:
if (!n--) break;
default:
BUG();
break;
}
return;
}
#endif
ia64_syscall_get_set_arguments(task, regs, i, n, args, 0);
}
@ -130,34 +77,6 @@ static inline void syscall_set_arguments(struct task_struct *task,
{
BUG_ON(i + n > 6);
#ifdef CONFIG_IA32_SUPPORT
if (IS_IA32_PROCESS(regs)) {
switch (i + n) {
case 6:
if (!n--) break;
regs->r13 = *args++;
case 5:
if (!n--) break;
regs->r15 = *args++;
case 4:
if (!n--) break;
regs->r14 = *args++;
case 3:
if (!n--) break;
regs->r10 = *args++;
case 2:
if (!n--) break;
regs->r9 = *args++;
case 1:
if (!n--) break;
regs->r11 = *args++;
case 0:
if (!n--) break;
}
return;
}
#endif
ia64_syscall_get_set_arguments(task, regs, i, n, args, 1);
}
#endif /* _ASM_SYSCALL_H */

11
arch/ia64/include/asm/system.h
View File

@ -191,15 +191,6 @@ do { \
#ifdef __KERNEL__
#ifdef CONFIG_IA32_SUPPORT
# define IS_IA32_PROCESS(regs) (ia64_psr(regs)->is != 0)
#else
# define IS_IA32_PROCESS(regs) 0
struct task_struct;
static inline void ia32_save_state(struct task_struct *t __attribute__((unused))){}
static inline void ia32_load_state(struct task_struct *t __attribute__((unused))){}
#endif
/*
* Context switch from one thread to another. If the two threads have
* different address spaces, schedule() has already taken care of
@ -233,7 +224,7 @@ extern void ia64_account_on_switch (struct task_struct *prev, struct task_struct
#define IA64_HAS_EXTRA_STATE(t) \
((t)->thread.flags & (IA64_THREAD_DBG_VALID|IA64_THREAD_PM_VALID) \
|| IS_IA32_PROCESS(task_pt_regs(t)) || PERFMON_IS_SYSWIDE())
|| PERFMON_IS_SYSWIDE())
#define __switch_to(prev,next,last) do { \
IA64_ACCOUNT_ON_SWITCH(prev, next); \

14
arch/ia64/include/asm/unistd.h
View File

@ -335,20 +335,6 @@
#define __ARCH_WANT_SYS_RT_SIGACTION
#define __ARCH_WANT_SYS_RT_SIGSUSPEND
#ifdef CONFIG_IA32_SUPPORT
# define __ARCH_WANT_SYS_FADVISE64
# define __ARCH_WANT_SYS_GETPGRP
# define __ARCH_WANT_SYS_LLSEEK
# define __ARCH_WANT_SYS_NICE
# define __ARCH_WANT_SYS_OLD_GETRLIMIT
# define __ARCH_WANT_SYS_OLDUMOUNT
# define __ARCH_WANT_SYS_PAUSE
# define __ARCH_WANT_SYS_SIGPENDING
# define __ARCH_WANT_SYS_SIGPROCMASK
# define __ARCH_WANT_COMPAT_SYS_RT_SIGSUSPEND
# define __ARCH_WANT_COMPAT_SYS_TIME
#endif
#if !defined(__ASSEMBLY__) && !defined(ASSEMBLER)
#include <linux/types.h>

21
arch/ia64/kernel/audit.c
View File

@ -30,20 +30,11 @@ static unsigned signal_class[] = {
int audit_classify_arch(int arch)
{
#ifdef CONFIG_IA32_SUPPORT
if (arch == AUDIT_ARCH_I386)
return 1;
#endif
return 0;
}
int audit_classify_syscall(int abi, unsigned syscall)
{
#ifdef CONFIG_IA32_SUPPORT
extern int ia32_classify_syscall(unsigned);
if (abi == AUDIT_ARCH_I386)
return ia32_classify_syscall(syscall);
#endif
switch(syscall) {
case __NR_open:
return 2;
@ -58,18 +49,6 @@ int audit_classify_syscall(int abi, unsigned syscall)
static int __init audit_classes_init(void)
{
#ifdef CONFIG_IA32_SUPPORT
extern __u32 ia32_dir_class[];
extern __u32 ia32_write_class[];
extern __u32 ia32_read_class[];
extern __u32 ia32_chattr_class[];
extern __u32 ia32_signal_class[];
audit_register_class(AUDIT_CLASS_WRITE_32, ia32_write_class);
audit_register_class(AUDIT_CLASS_READ_32, ia32_read_class);
audit_register_class(AUDIT_CLASS_DIR_WRITE_32, ia32_dir_class);
audit_register_class(AUDIT_CLASS_CHATTR_32, ia32_chattr_class);
audit_register_class(AUDIT_CLASS_SIGNAL_32, ia32_signal_class);
#endif
audit_register_class(AUDIT_CLASS_WRITE, write_class);
audit_register_class(AUDIT_CLASS_READ, read_class);
audit_register_class(AUDIT_CLASS_DIR_WRITE, dir_class);

39
arch/ia64/kernel/entry.S
View File

@ -71,15 +71,6 @@ ENTRY(ia64_execve)
add out3=16,sp // regs
br.call.sptk.many rp=sys_execve
.ret0:
#ifdef CONFIG_IA32_SUPPORT
/*
* Check if we're returning to ia32 mode. If so, we need to restore ia32 registers
* from pt_regs.
*/
adds r16=PT(CR_IPSR)+16,sp
;;
ld8 r16=[r16]
#endif
cmp4.ge p6,p7=r8,r0
mov ar.pfs=loc1 // restore ar.pfs
sxt4 r8=r8 // return 64-bit result
@ -108,12 +99,6 @@ ENTRY(ia64_execve)
ldf.fill f23=[sp]; ldf.fill f24=[sp]; mov f25=f0
ldf.fill f26=[sp]; ldf.fill f27=[sp]; mov f28=f0
ldf.fill f29=[sp]; ldf.fill f30=[sp]; mov f31=f0
#ifdef CONFIG_IA32_SUPPORT
tbit.nz p6,p0=r16, IA64_PSR_IS_BIT
movl loc0=ia64_ret_from_ia32_execve
;;
(p6) mov rp=loc0
#endif
br.ret.sptk.many rp
END(ia64_execve)
@ -848,30 +833,6 @@ __paravirt_work_processed_syscall:
br.cond.sptk.many rbs_switch // B
END(__paravirt_leave_syscall)
#ifdef __IA64_ASM_PARAVIRTUALIZED_NATIVE
#ifdef CONFIG_IA32_SUPPORT
GLOBAL_ENTRY(ia64_ret_from_ia32_execve)
PT_REGS_UNWIND_INFO(0)
adds r2=PT(R8)+16,sp // r2 = &pt_regs.r8
adds r3=PT(R10)+16,sp // r3 = &pt_regs.r10
;;
.mem.offset 0,0
st8.spill [r2]=r8 // store return value in slot for r8 and set unat bit
.mem.offset 8,0
st8.spill [r3]=r0 // clear error indication in slot for r10 and set unat bit
#ifdef CONFIG_PARAVIRT
;;
// don't fall through, ia64_leave_kernel may be #define'd
br.cond.sptk.few ia64_leave_kernel
;;
#endif /* CONFIG_PARAVIRT */
END(ia64_ret_from_ia32_execve)
#ifndef CONFIG_PARAVIRT
// fall through
#endif
#endif /* CONFIG_IA32_SUPPORT */
#endif /* __IA64_ASM_PARAVIRTUALIZED_NATIVE */
GLOBAL_ENTRY(__paravirt_leave_kernel)
PT_REGS_UNWIND_INFO(0)
/*

114
arch/ia64/kernel/ivt.S
View File

@ -49,7 +49,6 @@
#include <asm/asmmacro.h>
#include <asm/break.h>
#include <asm/ia32.h>
#include <asm/kregs.h>
#include <asm/asm-offsets.h>
#include <asm/pgtable.h>
@ -1386,28 +1385,6 @@ END(ia32_exception)
// 0x6a00 Entry 46 (size 16 bundles) IA-32 Intercept (30,31,59,70,71)
ENTRY(ia32_intercept)
DBG_FAULT(46)
#ifdef CONFIG_IA32_SUPPORT
mov r31=pr
MOV_FROM_ISR(r16)
;;
extr.u r17=r16,16,8 // get ISR.code
mov r18=ar.eflag
MOV_FROM_IIM(r19) // old eflag value
;;
cmp.ne p6,p0=2,r17
(p6) br.cond.spnt 1f // not a system flag fault
xor r16=r18,r19
;;
extr.u r17=r16,18,1 // get the eflags.ac bit
;;
cmp.eq p6,p0=0,r17
(p6) br.cond.spnt 1f // eflags.ac bit didn't change
;;
mov pr=r31,-1 // restore predicate registers
RFI
1:
#endif // CONFIG_IA32_SUPPORT
FAULT(46)
END(ia32_intercept)
@ -1416,12 +1393,7 @@ END(ia32_intercept)
// 0x6b00 Entry 47 (size 16 bundles) IA-32 Interrupt (74)
ENTRY(ia32_interrupt)
DBG_FAULT(47)
#ifdef CONFIG_IA32_SUPPORT
mov r31=pr
br.sptk.many dispatch_to_ia32_handler
#else
FAULT(47)
#endif
END(ia32_interrupt)
.org ia64_ivt+0x6c00
@ -1715,89 +1687,3 @@ ENTRY(dispatch_illegal_op_fault)
(p6) br.call.dpnt.many b6=b6 // call returns to ia64_leave_kernel
br.sptk.many ia64_leave_kernel
END(dispatch_illegal_op_fault)
#ifdef CONFIG_IA32_SUPPORT
/*
* There is no particular reason for this code to be here, other than that
* there happens to be space here that would go unused otherwise. If this
* fault ever gets "unreserved", simply moved the following code to a more
* suitable spot...
*/
// IA32 interrupt entry point
ENTRY(dispatch_to_ia32_handler)
SAVE_MIN
;;
MOV_FROM_ISR(r14)
SSM_PSR_IC_AND_DEFAULT_BITS_AND_SRLZ_I(r3, r24)
// guarantee that interruption collection is on
;;
SSM_PSR_I(p15, p15, r3)
adds r3=8,r2 // Base pointer for SAVE_REST
;;
SAVE_REST
;;
mov r15=0x80
shr r14=r14,16 // Get interrupt number
;;
cmp.ne p6,p0=r14,r15
(p6) br.call.dpnt.many b6=non_ia32_syscall
adds r14=IA64_PT_REGS_R8_OFFSET + 16,sp // 16 byte hole per SW conventions
adds r15=IA64_PT_REGS_R1_OFFSET + 16,sp
;;
cmp.eq pSys,pNonSys=r0,r0 // set pSys=1, pNonSys=0
ld8 r8=[r14] // get r8
;;
st8 [r15]=r8 // save original EAX in r1 (IA32 procs don't use the GP)
;;
alloc r15=ar.pfs,0,0,6,0 // must first in an insn group
;;
ld4 r8=[r14],8 // r8 == eax (syscall number)
mov r15=IA32_NR_syscalls
;;
cmp.ltu.unc p6,p7=r8,r15
ld4 out1=[r14],8 // r9 == ecx
;;
ld4 out2=[r14],8 // r10 == edx
;;
ld4 out0=[r14] // r11 == ebx
adds r14=(IA64_PT_REGS_R13_OFFSET) + 16,sp
;;
ld4 out5=[r14],PT(R14)-PT(R13) // r13 == ebp
;;
ld4 out3=[r14],PT(R15)-PT(R14) // r14 == esi
adds r2=TI_FLAGS+IA64_TASK_SIZE,r13
;;
ld4 out4=[r14] // r15 == edi
movl r16=ia32_syscall_table
;;
(p6) shladd r16=r8,3,r16 // force ni_syscall if not valid syscall number
ld4 r2=[r2] // r2 = current_thread_info()->flags
;;
ld8 r16=[r16]
and r2=_TIF_SYSCALL_TRACEAUDIT,r2 // mask trace or audit
;;
mov b6=r16
movl r15=ia32_ret_from_syscall
cmp.eq p8,p0=r2,r0
;;
mov rp=r15
(p8) br.call.sptk.many b6=b6
br.cond.sptk ia32_trace_syscall
non_ia32_syscall:
alloc r15=ar.pfs,0,0,2,0
mov out0=r14 // interrupt #
add out1=16,sp // pointer to pt_regs
;; // avoid WAW on CFM
br.call.sptk.many rp=ia32_bad_interrupt
.ret1: movl r15=ia64_leave_kernel
;;
mov rp=r15
br.ret.sptk.many rp
END(dispatch_to_ia32_handler)
#endif /* CONFIG_IA32_SUPPORT */

55
arch/ia64/kernel/process.c
View File

@ -33,7 +33,6 @@
#include <asm/cpu.h>
#include <asm/delay.h>
#include <asm/elf.h>
#include <asm/ia32.h>
#include <asm/irq.h>
#include <asm/kexec.h>
#include <asm/pgalloc.h>
@ -358,11 +357,6 @@ ia64_save_extra (struct task_struct *task)
if (info & PFM_CPUINFO_SYST_WIDE)
pfm_syst_wide_update_task(task, info, 0);
#endif
#ifdef CONFIG_IA32_SUPPORT
if (IS_IA32_PROCESS(task_pt_regs(task)))
ia32_save_state(task);
#endif
}
void
@ -383,11 +377,6 @@ ia64_load_extra (struct task_struct *task)
if (info & PFM_CPUINFO_SYST_WIDE)
pfm_syst_wide_update_task(task, info, 1);
#endif
#ifdef CONFIG_IA32_SUPPORT
if (IS_IA32_PROCESS(task_pt_regs(task)))
ia32_load_state(task);
#endif
}
/*
@ -426,7 +415,7 @@ copy_thread(unsigned long clone_flags,
unsigned long user_stack_base, unsigned long user_stack_size,
struct task_struct *p, struct pt_regs *regs)
{
extern char ia64_ret_from_clone, ia32_ret_from_clone;
extern char ia64_ret_from_clone;
struct switch_stack *child_stack, *stack;
unsigned long rbs, child_rbs, rbs_size;
struct pt_regs *child_ptregs;
@ -457,7 +446,7 @@ copy_thread(unsigned long clone_flags,
memcpy((void *) child_rbs, (void *) rbs, rbs_size);
if (likely(user_mode(child_ptregs))) {
if ((clone_flags & CLONE_SETTLS) && !IS_IA32_PROCESS(regs))
if (clone_flags & CLONE_SETTLS)
child_ptregs->r13 = regs->r16; /* see sys_clone2() in entry.S */
if (user_stack_base) {
child_ptregs->r12 = user_stack_base + user_stack_size - 16;
@ -477,10 +466,7 @@ copy_thread(unsigned long clone_flags,
child_ptregs->r13 = (unsigned long) p; /* set `current' pointer */
}
child_stack->ar_bspstore = child_rbs + rbs_size;
if (IS_IA32_PROCESS(regs))
child_stack->b0 = (unsigned long) &ia32_ret_from_clone;
else
child_stack->b0 = (unsigned long) &ia64_ret_from_clone;
child_stack->b0 = (unsigned long) &ia64_ret_from_clone;
/* copy parts of thread_struct: */
p->thread.ksp = (unsigned long) child_stack - 16;
@ -515,22 +501,6 @@ copy_thread(unsigned long clone_flags,
p->thread.flags = ((current->thread.flags & ~THREAD_FLAGS_TO_CLEAR)
| THREAD_FLAGS_TO_SET);
ia64_drop_fpu(p); /* don't pick up stale state from a CPU's fph */
#ifdef CONFIG_IA32_SUPPORT
/*
* If we're cloning an IA32 task then save the IA32 extra
* state from the current task to the new task
*/
if (IS_IA32_PROCESS(task_pt_regs(current))) {
ia32_save_state(p);
if (clone_flags & CLONE_SETTLS)
retval = ia32_clone_tls(p, child_ptregs);
/* Copy partially mapped page list */
if (!retval)
retval = ia32_copy_ia64_partial_page_list(p,
clone_flags);
}
#endif
#ifdef CONFIG_PERFMON
if (current->thread.pfm_context)
@ -704,15 +674,6 @@ EXPORT_SYMBOL(kernel_thread);
int
kernel_thread_helper (int (*fn)(void *), void *arg)
{
#ifdef CONFIG_IA32_SUPPORT
if (IS_IA32_PROCESS(task_pt_regs(current))) {
/* A kernel thread is always a 64-bit process. */
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);
}
#endif
return (*fn)(arg);
}
@ -725,14 +686,6 @@ flush_thread (void)
/* drop floating-point and debug-register state if it exists: */
current->thread.flags &= ~(IA64_THREAD_FPH_VALID | IA64_THREAD_DBG_VALID);
ia64_drop_fpu(current);
#ifdef CONFIG_IA32_SUPPORT
if (IS_IA32_PROCESS(task_pt_regs(current))) {
ia32_drop_ia64_partial_page_list(current);
current->thread.task_size = IA32_PAGE_OFFSET;
set_fs(USER_DS);
memset(current->thread.tls_array, 0, sizeof(current->thread.tls_array));
}
#endif
}
/*
@ -753,8 +706,6 @@ exit_thread (void)
if (current->thread.flags & IA64_THREAD_DBG_VALID)
pfm_release_debug_registers(current);
#endif
if (IS_IA32_PROCESS(task_pt_regs(current)))
ia32_drop_ia64_partial_page_list(current);
}
unsigned long

14
arch/ia64/kernel/ptrace.c
View File

@ -1250,13 +1250,8 @@ syscall_trace_enter (long arg0, long arg1, long arg2, long arg3,
long syscall;
int arch;
if (IS_IA32_PROCESS(&regs)) {
syscall = regs.r1;
arch = AUDIT_ARCH_I386;
} else {
syscall = regs.r15;
arch = AUDIT_ARCH_IA64;
}
syscall = regs.r15;
arch = AUDIT_ARCH_IA64;
audit_syscall_entry(arch, syscall, arg0, arg1, arg2, arg3);
}
@ -2172,11 +2167,6 @@ static const struct user_regset_view user_ia64_view = {
const struct user_regset_view *task_user_regset_view(struct task_struct *tsk)
{
#ifdef CONFIG_IA32_SUPPORT
extern const struct user_regset_view user_ia32_view;
if (IS_IA32_PROCESS(task_pt_regs(tsk)))
return &user_ia32_view;
#endif
return &user_ia64_view;
}

5
arch/ia64/kernel/setup.c
View File

@ -46,7 +46,6 @@
#include <linux/kexec.h>
#include <linux/crash_dump.h>
#include <asm/ia32.h>
#include <asm/machvec.h>
#include <asm/mca.h>
#include <asm/meminit.h>
@ -1016,10 +1015,6 @@ cpu_init (void)
ia64_mmu_init(ia64_imva(cpu_data));
ia64_mca_cpu_init(ia64_imva(cpu_data));
#ifdef CONFIG_IA32_SUPPORT
ia32_cpu_init();
#endif
/* Clear ITC to eliminate sched_clock() overflows in human time. */
ia64_set_itc(0);

54
arch/ia64/kernel/signal.c
View File

@ -21,7 +21,6 @@
#include <linux/unistd.h>
#include <linux/wait.h>
#include <asm/ia32.h>
#include <asm/intrinsics.h>
#include <asm/uaccess.h>
#include <asm/rse.h>
@ -425,14 +424,8 @@ static long
handle_signal (unsigned long sig, struct k_sigaction *ka, siginfo_t *info, sigset_t *oldset,
struct sigscratch *scr)
{
if (IS_IA32_PROCESS(&scr->pt)) {
/* send signal to IA-32 process */
if (!ia32_setup_frame1(sig, ka, info, oldset, &scr->pt))
return 0;
} else
/* send signal to IA-64 process */
if (!setup_frame(sig, ka, info, oldset, scr))
return 0;
if (!setup_frame(sig, ka, info, oldset, scr))
return 0;
spin_lock_irq(&current->sighand->siglock);
sigorsets(&current->blocked, &current->blocked, &ka->sa.sa_mask);
@ -462,7 +455,6 @@ ia64_do_signal (struct sigscratch *scr, long in_syscall)
siginfo_t info;
long restart = in_syscall;
long errno = scr->pt.r8;
# define ERR_CODE(c) (IS_IA32_PROCESS(&scr->pt) ? -(c) : (c))
/*
* In the ia64_leave_kernel code path, we want the common case to go fast, which
@ -490,14 +482,7 @@ ia64_do_signal (struct sigscratch *scr, long in_syscall)
* inferior call), thus it's important to check for restarting _after_
* get_signal_to_deliver().
*/
if (IS_IA32_PROCESS(&scr->pt)) {
if (in_syscall) {
if (errno >= 0)
restart = 0;
else
errno = -errno;
}
} else if ((long) scr->pt.r10 != -1)
if ((long) scr->pt.r10 != -1)
/*
* A system calls has to be restarted only if one of the error codes
* ERESTARTNOHAND, ERESTARTSYS, or ERESTARTNOINTR is returned. If r10
@ -513,22 +498,18 @@ ia64_do_signal (struct sigscratch *scr, long in_syscall)
switch (errno) {
case ERESTART_RESTARTBLOCK:
case ERESTARTNOHAND:
scr->pt.r8 = ERR_CODE(EINTR);
scr->pt.r8 = EINTR;
/* note: scr->pt.r10 is already -1 */
break;
case ERESTARTSYS:
if ((ka.sa.sa_flags & SA_RESTART) == 0) {
scr->pt.r8 = ERR_CODE(EINTR);
scr->pt.r8 = EINTR;
/* note: scr->pt.r10 is already -1 */
break;
}
case ERESTARTNOINTR:
if (IS_IA32_PROCESS(&scr->pt)) {
scr->pt.r8 = scr->pt.r1;
scr->pt.cr_iip -= 2;
} else
ia64_decrement_ip(&scr->pt);
ia64_decrement_ip(&scr->pt);
restart = 0; /* don't restart twice if handle_signal() fails... */
}
}
@ -555,21 +536,14 @@ ia64_do_signal (struct sigscratch *scr, long in_syscall)
if (errno == ERESTARTNOHAND || errno == ERESTARTSYS || errno == ERESTARTNOINTR
|| errno == ERESTART_RESTARTBLOCK)
{
if (IS_IA32_PROCESS(&scr->pt)) {
scr->pt.r8 = scr->pt.r1;
scr->pt.cr_iip -= 2;
if (errno == ERESTART_RESTARTBLOCK)
scr->pt.r8 = 0; /* x86 version of __NR_restart_syscall */
} else {
/*
* Note: the syscall number is in r15 which is saved in
* pt_regs so all we need to do here is adjust ip so that
* the "break" instruction gets re-executed.
*/
ia64_decrement_ip(&scr->pt);
if (errno == ERESTART_RESTARTBLOCK)
scr->pt.r15 = __NR_restart_syscall;
}
/*
* Note: the syscall number is in r15 which is saved in
* pt_regs so all we need to do here is adjust ip so that
* the "break" instruction gets re-executed.
*/
ia64_decrement_ip(&scr->pt);
if (errno == ERESTART_RESTARTBLOCK)
scr->pt.r15 = __NR_restart_syscall;
}
}

5
arch/ia64/kernel/smpboot.c
View File

@ -44,7 +44,6 @@
#include <asm/cache.h>
#include <asm/current.h>
#include <asm/delay.h>
#include <asm/ia32.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/machvec.h>
@ -443,10 +442,6 @@ smp_callin (void)
calibrate_delay();
local_cpu_data->loops_per_jiffy = loops_per_jiffy;
#ifdef CONFIG_IA32_SUPPORT
ia32_gdt_init();
#endif
/*
* Allow the master to continue.
*/

9
arch/ia64/kernel/traps.c
View File

@ -19,7 +19,6 @@
#include <linux/kdebug.h>
#include <asm/fpswa.h>
#include <asm/ia32.h>
#include <asm/intrinsics.h>
#include <asm/processor.h>
#include <asm/uaccess.h>
@ -626,10 +625,6 @@ ia64_fault (unsigned long vector, unsigned long isr, unsigned long ifa,
break;
case 45:
#ifdef CONFIG_IA32_SUPPORT
if (ia32_exception(&regs, isr) == 0)
return;
#endif
printk(KERN_ERR "Unexpected IA-32 exception (Trap 45)\n");
printk(KERN_ERR " iip - 0x%lx, ifa - 0x%lx, isr - 0x%lx\n",
iip, ifa, isr);
@ -637,10 +632,6 @@ ia64_fault (unsigned long vector, unsigned long isr, unsigned long ifa,
break;
case 46:
#ifdef CONFIG_IA32_SUPPORT
if (ia32_intercept(&regs, isr) == 0)
return;
#endif
printk(KERN_ERR "Unexpected IA-32 intercept trap (Trap 46)\n");
printk(KERN_ERR " iip - 0x%lx, ifa - 0x%lx, isr - 0x%lx, iim - 0x%lx\n",
iip, ifa, isr, iim);

5
arch/ia64/mm/init.c
View File

@ -22,7 +22,6 @@
#include <linux/kexec.h>
#include <asm/dma.h>
#include <asm/ia32.h>
#include <asm/io.h>
#include <asm/machvec.h>
#include <asm/numa.h>
@ -668,10 +667,6 @@ mem_init (void)
fsyscall_table[i] = sys_call_table[i] | 1;
}
setup_gate();
#ifdef CONFIG_IA32_SUPPORT
ia32_mem_init();
#endif
}
#ifdef CONFIG_MEMORY_HOTPLUG

5
arch/ia64/xen/hypercall.S
View File

@ -58,11 +58,6 @@ __HCALL2(xen_ptcga, HYPERPRIVOP_PTC_GA)
__HCALL2(xen_set_rr, HYPERPRIVOP_SET_RR)
__HCALL2(xen_set_kr, HYPERPRIVOP_SET_KR)
#ifdef CONFIG_IA32_SUPPORT
__HCALL0(xen_get_eflag, HYPERPRIVOP_GET_EFLAG)
__HCALL1(xen_set_eflag, HYPERPRIVOP_SET_EFLAG) // refer SDM vol1 3.1.8
#endif /* CONFIG_IA32_SUPPORT */
GLOBAL_ENTRY(xen_set_rr0_to_rr4)
mov r8=r32
mov r9=r33

16
arch/ia64/xen/xen_pv_ops.c
View File

@ -301,11 +301,6 @@ static void xen_setreg(int regnum, unsigned long val)
case _IA64_REG_AR_KR0 ... _IA64_REG_AR_KR7:
xen_set_kr(regnum - _IA64_REG_AR_KR0, val);
break;
#ifdef CONFIG_IA32_SUPPORT
case _IA64_REG_AR_EFLAG:
xen_set_eflag(val);
break;
#endif
case _IA64_REG_AR_ITC:
xen_set_itc(val);
break;
@ -332,11 +327,6 @@ static unsigned long xen_getreg(int regnum)
case _IA64_REG_PSR:
res = xen_get_psr();
break;
#ifdef CONFIG_IA32_SUPPORT
case _IA64_REG_AR_EFLAG:
res = xen_get_eflag();
break;
#endif
case _IA64_REG_AR_ITC:
res = xen_get_itc();
break;
@ -710,9 +700,6 @@ extern unsigned long xen_getreg(int regnum);
__DEFINE_FUNC(getreg,
__DEFINE_GET_REG(PSR, PSR)
#ifdef CONFIG_IA32_SUPPORT
__DEFINE_GET_REG(AR_EFLAG, EFLAG)
#endif
/* get_itc */
"mov r2 = " __stringify(_IA64_REG_AR_ITC) "\n"
@ -789,9 +776,6 @@ __DEFINE_FUNC(setreg,
";;\n"
"(p6) br.cond.spnt xen_set_itc\n"
#ifdef CONFIG_IA32_SUPPORT
__DEFINE_SET_REG(AR_EFLAG, SET_EFLAG)
#endif
__DEFINE_SET_REG(CR_TPR, SET_TPR)
__DEFINE_SET_REG(CR_EOI, EOI)

2
drivers/input/input-compat.h
View File

@ -21,8 +21,6 @@
you why the ifdefs are needed? Think about it again. -AK */
#ifdef CONFIG_X86_64
# define INPUT_COMPAT_TEST is_compat_task()
#elif defined(CONFIG_IA64)
# define INPUT_COMPAT_TEST IS_IA32_PROCESS(task_pt_regs(current))
#elif defined(CONFIG_S390)
# define INPUT_COMPAT_TEST test_thread_flag(TIF_31BIT)
#elif defined(CONFIG_MIPS)