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x86: replace most VM86 flags with flags from processor-flags.h

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Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
gorcunov@gmail.com 2008-03-28 17:56:56 +03:00 committed by Ingo Molnar
parent 6b6891f9c5
commit a5c15d419d
4 changed files with 22 additions and 28 deletions
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2
arch/x86/kernel/kprobes.c
View File

@ -489,7 +489,7 @@ static int __kprobes reenter_kprobe(struct kprobe *p, struct pt_regs *regs,
break;
case KPROBE_HIT_SS:
if (p == kprobe_running()) {
regs->flags &= ~TF_MASK;
regs->flags &= ~X86_EFLAGS_TF;
regs->flags |= kcb->kprobe_saved_flags;
return 0;
} else {

4
arch/x86/kernel/signal_32.c
View File

@ -419,7 +419,7 @@ setup_frame(int sig, struct k_sigaction *ka, sigset_t *set,
* The tracer may want to single-step inside the
* handler too.
*/
regs->flags &= ~(TF_MASK | X86_EFLAGS_DF);
regs->flags &= ~(X86_EFLAGS_TF | X86_EFLAGS_DF);
if (test_thread_flag(TIF_SINGLESTEP))
ptrace_notify(SIGTRAP);
@ -507,7 +507,7 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
* The tracer may want to single-step inside the
* handler too.
*/
regs->flags &= ~(TF_MASK | X86_EFLAGS_DF);
regs->flags &= ~(X86_EFLAGS_TF | X86_EFLAGS_DF);
if (test_thread_flag(TIF_SINGLESTEP))
ptrace_notify(SIGTRAP);

34
arch/x86/kernel/vm86_32.c
View File

@ -139,7 +139,7 @@ struct pt_regs *save_v86_state(struct kernel_vm86_regs *regs)
printk("no vm86_info: BAD\n");
do_exit(SIGSEGV);
}
set_flags(regs->pt.flags, VEFLAGS, VIF_MASK | current->thread.v86mask);
set_flags(regs->pt.flags, VEFLAGS, X86_EFLAGS_VIF | current->thread.v86mask);
tmp = copy_vm86_regs_to_user(&current->thread.vm86_info->regs, regs);
tmp += put_user(current->thread.screen_bitmap, &current->thread.vm86_info->screen_bitmap);
if (tmp) {
@ -306,13 +306,13 @@ static void do_sys_vm86(struct kernel_vm86_struct *info, struct task_struct *tsk
tsk->thread.v86mask = 0;
break;
case CPU_386:
tsk->thread.v86mask = NT_MASK | IOPL_MASK;
tsk->thread.v86mask = X86_EFLAGS_NT | X86_EFLAGS_IOPL;
break;
case CPU_486:
tsk->thread.v86mask = AC_MASK | NT_MASK | IOPL_MASK;
tsk->thread.v86mask = X86_EFLAGS_AC | X86_EFLAGS_NT | X86_EFLAGS_IOPL;
break;
default:
tsk->thread.v86mask = ID_MASK | AC_MASK | NT_MASK | IOPL_MASK;
tsk->thread.v86mask = X86_EFLAGS_ID | X86_EFLAGS_AC | X86_EFLAGS_NT | X86_EFLAGS_IOPL;
break;
}
@ -363,24 +363,24 @@ static inline void return_to_32bit(struct kernel_vm86_regs *regs16, int retval)
static inline void set_IF(struct kernel_vm86_regs *regs)
{
VEFLAGS |= VIF_MASK;
if (VEFLAGS & VIP_MASK)
VEFLAGS |= X86_EFLAGS_VIF;
if (VEFLAGS & X86_EFLAGS_VIP)
return_to_32bit(regs, VM86_STI);
}
static inline void clear_IF(struct kernel_vm86_regs *regs)
{
VEFLAGS &= ~VIF_MASK;
VEFLAGS &= ~X86_EFLAGS_VIF;
}
static inline void clear_TF(struct kernel_vm86_regs *regs)
{
regs->pt.flags &= ~TF_MASK;
regs->pt.flags &= ~X86_EFLAGS_TF;
}
static inline void clear_AC(struct kernel_vm86_regs *regs)
{
regs->pt.flags &= ~AC_MASK;
regs->pt.flags &= ~X86_EFLAGS_AC;
}
/*
@ -399,7 +399,7 @@ static inline void set_vflags_long(unsigned long flags, struct kernel_vm86_regs
{
set_flags(VEFLAGS, flags, current->thread.v86mask);
set_flags(regs->pt.flags, flags, SAFE_MASK);
if (flags & IF_MASK)
if (flags & X86_EFLAGS_IF)
set_IF(regs);
else
clear_IF(regs);
@ -409,7 +409,7 @@ static inline void set_vflags_short(unsigned short flags, struct kernel_vm86_reg
{
set_flags(VFLAGS, flags, current->thread.v86mask);
set_flags(regs->pt.flags, flags, SAFE_MASK);
if (flags & IF_MASK)
if (flags & X86_EFLAGS_IF)
set_IF(regs);
else
clear_IF(regs);
@ -419,9 +419,9 @@ static inline unsigned long get_vflags(struct kernel_vm86_regs *regs)
{
unsigned long flags = regs->pt.flags & RETURN_MASK;
if (VEFLAGS & VIF_MASK)
flags |= IF_MASK;
flags |= IOPL_MASK;
if (VEFLAGS & X86_EFLAGS_VIF)
flags |= X86_EFLAGS_IF;
flags |= X86_EFLAGS_IOPL;
return flags | (VEFLAGS & current->thread.v86mask);
}
@ -573,11 +573,11 @@ void handle_vm86_fault(struct kernel_vm86_regs *regs, long error_code)
#define CHECK_IF_IN_TRAP \
if (VMPI.vm86dbg_active && VMPI.vm86dbg_TFpendig) \
newflags |= TF_MASK
newflags |= X86_EFLAGS_TF
#define VM86_FAULT_RETURN do { \
if (VMPI.force_return_for_pic && (VEFLAGS & (IF_MASK | VIF_MASK))) \
if (VMPI.force_return_for_pic && (VEFLAGS & (X86_EFLAGS_IF | X86_EFLAGS_VIF))) \
return_to_32bit(regs, VM86_PICRETURN); \
if (orig_flags & TF_MASK) \
if (orig_flags & X86_EFLAGS_TF) \
handle_vm86_trap(regs, 0, 1); \
return; } while (0)

10
include/asm-x86/vm86.h
View File

@ -12,19 +12,13 @@
* Linus
*/
#define TF_MASK 0x00000100
#define IF_MASK 0x00000200
#define IOPL_MASK 0x00003000
#define NT_MASK 0x00004000
#include <asm/processor-flags.h>
#ifdef CONFIG_VM86
#define X86_VM_MASK X86_EFLAGS_VM
#else
#define X86_VM_MASK 0 /* No VM86 support */
#endif
#define AC_MASK 0x00040000
#define VIF_MASK 0x00080000 /* virtual interrupt flag */
#define VIP_MASK 0x00100000 /* virtual interrupt pending */
#define ID_MASK 0x00200000
#define BIOSSEG 0x0f000