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x86, fpu: Unbreak FPU emulation

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Unbreak FPU emulation, broken by checkin
8660328332:
x86: Introduce 'struct fpu' and related API

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: Avi Kivity <avi@redhat.com>
Cc: Suresh Siddha <suresh.b.siddha@intel.com>
LKML-Reference: <1273135546-29690-3-git-send-email-avi@redhat.com>
This commit is contained in:
H. Peter Anvin 2010-05-10 13:37:16 -07:00
parent 8660328332
commit c3f8978ea3
3 changed files with 4 additions and 4 deletions
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2
arch/x86/math-emu/fpu_aux.c
View File

@ -52,7 +52,7 @@ void finit_soft_fpu(struct i387_soft_struct *soft)
void finit(void)
{
finit_task(&current->thread.fpu);
finit_soft_fpu(&current->thread.fpu.state->soft);
}
/*

4
arch/x86/math-emu/fpu_entry.c
View File

@ -681,7 +681,7 @@ int fpregs_soft_set(struct task_struct *target,
unsigned int pos, unsigned int count,
const void *kbuf, const void __user *ubuf)
{
struct i387_soft_struct *s387 = &target->thread.xstate->soft;
struct i387_soft_struct *s387 = &target->thread.fpu.state->soft;
void *space = s387->st_space;
int ret;
int offset, other, i, tags, regnr, tag, newtop;
@ -733,7 +733,7 @@ int fpregs_soft_get(struct task_struct *target,
unsigned int pos, unsigned int count,
void *kbuf, void __user *ubuf)
{
struct i387_soft_struct *s387 = &target->thread.xstate->soft;
struct i387_soft_struct *s387 = &target->thread.fpu.state->soft;
const void *space = s387->st_space;
int ret;
int offset = (S387->ftop & 7) * 10, other = 80 - offset;

2
arch/x86/math-emu/fpu_system.h
View File

@ -31,7 +31,7 @@
#define SEG_EXPAND_DOWN(s) (((s).b & ((1 << 11) | (1 << 10))) \
== (1 << 10))
#define I387 (current->thread.xstate)
#define I387 (current->thread.fpu.state)
#define FPU_info (I387->soft.info)
#define FPU_CS (*(unsigned short *) &(FPU_info->regs->cs))