x86: x86 user_regset cleanup
This removes a bunch of dead code that is no longer needed now
that the user_regset interfaces are being used for all these jobs.
Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/arch/x86/kernel/i387.c b/arch/x86/kernel/i387.c
index f7f7568..26719bd 100644
--- a/arch/x86/kernel/i387.c
+++ b/arch/x86/kernel/i387.c
@@ -454,113 +454,26 @@
return err;
}
-#endif /* CONFIG_X86_32 || CONFIG_IA32_EMULATION */
-
-#ifdef CONFIG_X86_64
-
-int get_fpregs(struct user_i387_struct __user *buf, struct task_struct *tsk)
-{
- return xfpregs_get(tsk, NULL, 0, sizeof(*buf), NULL, buf);
-}
-
-int set_fpregs(struct task_struct *tsk, struct user_i387_struct __user *buf)
-{
- return xfpregs_set(tsk, NULL, 0, sizeof(*buf), NULL, buf);
-}
-
-#else
-
-int get_fpregs(struct user_i387_struct __user *buf, struct task_struct *tsk)
-{
- return fpregs_get(tsk, NULL, 0, sizeof(*buf), NULL, buf);
-}
-
-int set_fpregs(struct task_struct *tsk, struct user_i387_struct __user *buf)
-{
- return fpregs_set(tsk, NULL, 0, sizeof(*buf), NULL, buf);
-}
-
-int get_fpxregs(struct user_fxsr_struct __user *buf, struct task_struct *tsk)
-{
- return xfpregs_get(tsk, NULL, 0, sizeof(*buf), NULL, buf);
-}
-
-int set_fpxregs(struct task_struct *tsk, struct user_fxsr_struct __user *buf)
-{
- return xfpregs_get(tsk, NULL, 0, sizeof(*buf), NULL, buf);
-}
-
-#endif
-
/*
* FPU state for core dumps.
+ * This is only used for a.out dumps now.
+ * It is declared generically using elf_fpregset_t (which is
+ * struct user_i387_struct) but is in fact only used for 32-bit
+ * dumps, so on 64-bit it is really struct user_i387_ia32_struct.
*/
-
-static inline void copy_fpu_fsave(struct task_struct *tsk,
- struct user_i387_struct *fpu)
-{
- memcpy(fpu, &tsk->thread.i387.fsave,
- sizeof(struct user_i387_struct));
-}
-
-static inline void copy_fpu_fxsave(struct task_struct *tsk,
- struct user_i387_struct *fpu)
-{
- unsigned short *to;
- unsigned short *from;
- int i;
-
- memcpy(fpu, &tsk->thread.i387.fxsave, 7 * sizeof(long));
-
- to = (unsigned short *)&fpu->st_space[0];
- from = (unsigned short *)&tsk->thread.i387.fxsave.st_space[0];
- for (i = 0; i < 8; i++, to += 5, from += 8)
- memcpy(to, from, 5 * sizeof(unsigned short));
-}
-
int dump_fpu(struct pt_regs *regs, struct user_i387_struct *fpu)
{
int fpvalid;
struct task_struct *tsk = current;
fpvalid = !!used_math();
- if (fpvalid) {
- unlazy_fpu(tsk);
- if (cpu_has_fxsr) {
- copy_fpu_fxsave(tsk, fpu);
- } else {
- copy_fpu_fsave(tsk, fpu);
- }
- }
+ if (fpvalid)
+ fpvalid = !fpregs_get(tsk, NULL,
+ 0, sizeof(struct user_i387_ia32_struct),
+ fpu, NULL);
return fpvalid;
}
EXPORT_SYMBOL(dump_fpu);
-int dump_task_fpu(struct task_struct *tsk, struct user_i387_struct *fpu)
-{
- int fpvalid = !!tsk_used_math(tsk);
-
- if (fpvalid) {
- if (tsk == current)
- unlazy_fpu(tsk);
- if (cpu_has_fxsr)
- copy_fpu_fxsave(tsk, fpu);
- else
- copy_fpu_fsave(tsk, fpu);
- }
- return fpvalid;
-}
-
-int dump_task_extended_fpu(struct task_struct *tsk,
- struct user32_fxsr_struct *fpu)
-{
- int fpvalid = tsk_used_math(tsk) && cpu_has_fxsr;
-
- if (fpvalid) {
- if (tsk == current)
- unlazy_fpu(tsk);
- memcpy(fpu, &tsk->thread.i387.fxsave, sizeof(*fpu));
- }
- return fpvalid;
-}
+#endif /* CONFIG_X86_32 || CONFIG_IA32_EMULATION */