{
WARN_ON(tm_suspend_disabled);
-#ifdef CONFIG_ALTIVEC
if (cpu_has_feature(CPU_FTR_ALTIVEC))
current->thread.ckvrsave = mfspr(SPRN_VRSAVE);
-#endif
-#ifdef CONFIG_SPE
- if (current->thread.used_spe)
- flush_spe_to_thread(current);
-#endif
}
static int save_tm_user_regs_unsafe(struct pt_regs *regs, struct mcontext __user *frame,
*/
unsafe_put_user((msr >> 32), &tm_frame->mc_gregs[PT_MSR], failed);
-#ifdef CONFIG_ALTIVEC
/* save altivec registers */
if (current->thread.used_vr) {
unsafe_copy_to_user(&frame->mc_vregs, ¤t->thread.ckvr_state,
else
unsafe_put_user(current->thread.ckvrsave,
(u32 __user *)&tm_frame->mc_vregs[32], failed);
-#endif /* CONFIG_ALTIVEC */
unsafe_copy_ckfpr_to_user(&frame->mc_fregs, current, failed);
if (msr & MSR_FP)
else
unsafe_copy_ckfpr_to_user(&tm_frame->mc_fregs, current, failed);
-#ifdef CONFIG_VSX
/*
* Copy VSR 0-31 upper half from thread_struct to local
* buffer, then write that to userspace. Also set MSR_VSX in
msr |= MSR_VSX;
}
-#endif /* CONFIG_VSX */
-#ifdef CONFIG_SPE
- /* SPE regs are not checkpointed with TM, so this section is
- * simply the same as in __unsafe_save_user_regs().
- */
- if (current->thread.used_spe) {
- unsafe_copy_to_user(&frame->mc_vregs, current->thread.evr,
- ELF_NEVRREG * sizeof(u32), failed);
- /* set MSR_SPE in the saved MSR value to indicate that
- * frame->mc_vregs contains valid data */
- msr |= MSR_SPE;
- }
-
- /* We always copy to/from spefscr */
- unsafe_put_user(current->thread.spefscr,
- (u32 __user *)&frame->mc_vregs + ELF_NEVRREG, failed);
-#endif /* CONFIG_SPE */
unsafe_put_user(msr, &frame->mc_gregs[PT_MSR], failed);
struct mcontext __user *tm_sr)
{
unsigned long msr, msr_hi;
-#ifdef CONFIG_VSX
int i;
-#endif
if (tm_suspend_disabled)
return 1;
/* Restore the previous little-endian mode */
regs->msr = (regs->msr & ~MSR_LE) | (msr & MSR_LE);
-#ifdef CONFIG_ALTIVEC
regs->msr &= ~MSR_VEC;
if (msr & MSR_VEC) {
/* restore altivec registers from the stack */
(u32 __user *)&sr->mc_vregs[32], failed);
if (cpu_has_feature(CPU_FTR_ALTIVEC))
mtspr(SPRN_VRSAVE, current->thread.ckvrsave);
-#endif /* CONFIG_ALTIVEC */
regs->msr &= ~(MSR_FP | MSR_FE0 | MSR_FE1);
unsafe_copy_fpr_from_user(current, &sr->mc_fregs, failed);
-#ifdef CONFIG_VSX
regs->msr &= ~MSR_VSX;
if (msr & MSR_VSX) {
/*
current->thread.fp_state.fpr[i][TS_VSRLOWOFFSET] = 0;
current->thread.ckfp_state.fpr[i][TS_VSRLOWOFFSET] = 0;
}
-#endif /* CONFIG_VSX */
-
-#ifdef CONFIG_SPE
- /* SPE regs are not checkpointed with TM, so this section is
- * simply the same as in restore_user_regs().
- */
- regs->msr &= ~MSR_SPE;
- if (msr & MSR_SPE) {
- unsafe_copy_from_user(current->thread.evr, &sr->mc_vregs,
- ELF_NEVRREG * sizeof(u32), failed);
- current->thread.used_spe = true;
- } else if (current->thread.used_spe)
- memset(current->thread.evr, 0, ELF_NEVRREG * sizeof(u32));
-
- /* Always get SPEFSCR back */
- unsafe_get_user(current->thread.spefscr,
- (u32 __user *)&sr->mc_vregs + ELF_NEVRREG, failed);
-#endif /* CONFIG_SPE */
user_read_access_end();
unsafe_restore_general_regs(regs, tm_sr, failed);
-#ifdef CONFIG_ALTIVEC
/* restore altivec registers from the stack */
if (msr & MSR_VEC)
unsafe_copy_from_user(¤t->thread.vr_state, &tm_sr->mc_vregs,
/* Always get VRSAVE back */
unsafe_get_user(current->thread.vrsave,
(u32 __user *)&tm_sr->mc_vregs[32], failed);
-#endif /* CONFIG_ALTIVEC */
unsafe_copy_ckfpr_from_user(current, &tm_sr->mc_fregs, failed);
-#ifdef CONFIG_VSX
if (msr & MSR_VSX) {
/*
* Restore altivec registers from the stack to a local
unsafe_copy_vsx_from_user(current, &tm_sr->mc_vsregs, failed);
current->thread.used_vsr = true;
}
-#endif /* CONFIG_VSX */
/* Get the top half of the MSR from the user context */
unsafe_get_user(msr_hi, &tm_sr->mc_gregs[PT_MSR], failed);
load_fp_state(¤t->thread.fp_state);
regs->msr |= (MSR_FP | current->thread.fpexc_mode);
}
-#ifdef CONFIG_ALTIVEC
if (msr & MSR_VEC) {
load_vr_state(¤t->thread.vr_state);
regs->msr |= MSR_VEC;
}
-#endif
preempt_enable();