summaryrefslogtreecommitdiffstats
path: root/arch/powerpc/kernel/ppc_ksyms.c
diff options
context:
space:
mode:
authorMichael Neuling <mikey@neuling.org>2008-06-25 14:07:18 +1000
committerPaul Mackerras <paulus@samba.org>2008-07-01 11:28:50 +1000
commitce48b2100785e5ca629fb3aa8e3b50aca808f692 (patch)
tree63532ff7cc68b18ca4902bd10e03fcbaaf01cade /arch/powerpc/kernel/ppc_ksyms.c
parent72ffff5b1792b0fa4d40a8e2f3276fff999820ec (diff)
downloadop-kernel-dev-ce48b2100785e5ca629fb3aa8e3b50aca808f692.zip
op-kernel-dev-ce48b2100785e5ca629fb3aa8e3b50aca808f692.tar.gz
powerpc: Add VSX context save/restore, ptrace and signal support
This patch extends the floating point save and restore code to use the VSX load/stores when VSX is available. This will make FP context save/restore marginally slower on FP only code, when VSX is available, as it has to load/store 128bits rather than just 64bits. Mixing FP, VMX and VSX code will get constant architected state. The signals interface is extended to enable access to VSR 0-31 doubleword 1 after discussions with tool chain maintainers. Backward compatibility is maintained. The ptrace interface is also extended to allow access to VSR 0-31 full registers. Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/kernel/ppc_ksyms.c')
-rw-r--r--arch/powerpc/kernel/ppc_ksyms.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/ppc_ksyms.c b/arch/powerpc/kernel/ppc_ksyms.c
index d3ac631..958ecb9 100644
--- a/arch/powerpc/kernel/ppc_ksyms.c
+++ b/arch/powerpc/kernel/ppc_ksyms.c
@@ -102,6 +102,9 @@ EXPORT_SYMBOL(giveup_fpu);
#ifdef CONFIG_ALTIVEC
EXPORT_SYMBOL(giveup_altivec);
#endif /* CONFIG_ALTIVEC */
+#ifdef CONFIG_VSX
+EXPORT_SYMBOL(giveup_vsx);
+#endif /* CONFIG_VSX */
#ifdef CONFIG_SPE
EXPORT_SYMBOL(giveup_spe);
#endif /* CONFIG_SPE */
OpenPOWER on IntegriCloud