diff options
Diffstat (limited to 'arch/x86/math-emu/fpu_entry.c')
| -rw-r--r-- | arch/x86/math-emu/fpu_entry.c | 23 |
1 files changed, 9 insertions, 14 deletions
diff --git a/arch/x86/math-emu/fpu_entry.c b/arch/x86/math-emu/fpu_entry.c index 9b8681241..3d8f2e421 100644 --- a/arch/x86/math-emu/fpu_entry.c +++ b/arch/x86/math-emu/fpu_entry.c @@ -29,9 +29,8 @@ #include <asm/uaccess.h> #include <asm/traps.h> -#include <asm/desc.h> #include <asm/user.h> -#include <asm/i387.h> +#include <asm/fpu/internal.h> #include "fpu_system.h" #include "fpu_emu.h" @@ -147,13 +146,9 @@ void math_emulate(struct math_emu_info *info) unsigned long code_base = 0; unsigned long code_limit = 0; /* Initialized to stop compiler warnings */ struct desc_struct code_descriptor; + struct fpu *fpu = ¤t->thread.fpu; - if (!used_math()) { - if (init_fpu(current)) { - do_group_exit(SIGKILL); - return; - } - } + fpu__activate_curr(fpu); #ifdef RE_ENTRANT_CHECKING if (emulating) { @@ -185,7 +180,7 @@ void math_emulate(struct math_emu_info *info) math_abort(FPU_info, SIGILL); } - code_descriptor = LDT_DESCRIPTOR(FPU_CS); + code_descriptor = FPU_get_ldt_descriptor(FPU_CS); if (SEG_D_SIZE(code_descriptor)) { /* The above test may be wrong, the book is not clear */ /* Segmented 32 bit protected mode */ @@ -673,7 +668,7 @@ void math_abort(struct math_emu_info *info, unsigned int signal) #endif /* PARANOID */ } -#define S387 ((struct i387_soft_struct *)s387) +#define S387 ((struct swregs_state *)s387) #define sstatus_word() \ ((S387->swd & ~SW_Top & 0xffff) | ((S387->ftop << SW_Top_Shift) & SW_Top)) @@ -682,14 +677,14 @@ 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.fpu.state->soft; + struct swregs_state *s387 = &target->thread.fpu.state.soft; void *space = s387->st_space; int ret; int offset, other, i, tags, regnr, tag, newtop; RE_ENTRANT_CHECK_OFF; ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, s387, 0, - offsetof(struct i387_soft_struct, st_space)); + offsetof(struct swregs_state, st_space)); RE_ENTRANT_CHECK_ON; if (ret) @@ -734,7 +729,7 @@ 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.fpu.state->soft; + struct swregs_state *s387 = &target->thread.fpu.state.soft; const void *space = s387->st_space; int ret; int offset = (S387->ftop & 7) * 10, other = 80 - offset; @@ -752,7 +747,7 @@ int fpregs_soft_get(struct task_struct *target, #endif /* PECULIAR_486 */ ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf, s387, 0, - offsetof(struct i387_soft_struct, st_space)); + offsetof(struct swregs_state, st_space)); /* Copy all registers in stack order. */ if (!ret) |