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[POWERPC] Add cpu feature for SPE handling

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Make it so that SPE support can be determined at runtime.  This is similiar
to how we handle AltiVec.  This allows us to have SPE support built in and
work on processors with and without SPE.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This commit is contained in:
Kumar Gala
2007-09-13 01:44:20 -05:00
parent d8f1324a50
commit 5e14d21e3f
5 changed files with 46 additions and 28 deletions
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6
arch/powerpc/kernel/ptrace.c
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@ -576,8 +576,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
#ifdef CONFIG_SPE
case PTRACE_GETEVRREGS:
/* Get the child spe register state. */
if (child->thread.regs->msr & MSR_SPE)
giveup_spe(child);
flush_spe_to_thread(child);
ret = get_evrregs((unsigned long __user *)data, child);
break;
@ -585,8 +584,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
/* Set the child spe register state. */
/* this is to clear the MSR_SPE bit to force a reload
* of register state from memory */
if (child->thread.regs->msr & MSR_SPE)
giveup_spe(child);
flush_spe_to_thread(child);
ret = set_evrregs(child, (unsigned long __user *)data);
break;
#endif