summaryrefslogtreecommitdiffstats
path: root/arch/powerpc/net/bpf_jit64.h
diff options
context:
space:
mode:
Diffstat (limited to 'arch/powerpc/net/bpf_jit64.h')
-rw-r--r--arch/powerpc/net/bpf_jit64.h20
1 files changed, 20 insertions, 0 deletions
diff --git a/arch/powerpc/net/bpf_jit64.h b/arch/powerpc/net/bpf_jit64.h
index 3609be4692b3..47f441f351a6 100644
--- a/arch/powerpc/net/bpf_jit64.h
+++ b/arch/powerpc/net/bpf_jit64.h
@@ -68,6 +68,26 @@ static const int b2p[] = {
/* PPC NVR range -- update this if we ever use NVRs below r27 */
#define BPF_PPC_NVR_MIN 27
+/*
+ * WARNING: These can use TMP_REG_2 if the offset is not at word boundary,
+ * so ensure that it isn't in use already.
+ */
+#define PPC_BPF_LL(r, base, i) do { \
+ if ((i) % 4) { \
+ PPC_LI(b2p[TMP_REG_2], (i)); \
+ PPC_LDX(r, base, b2p[TMP_REG_2]); \
+ } else \
+ PPC_LD(r, base, i); \
+ } while(0)
+#define PPC_BPF_STL(r, base, i) do { \
+ if ((i) % 4) { \
+ PPC_LI(b2p[TMP_REG_2], (i)); \
+ PPC_STDX(r, base, b2p[TMP_REG_2]); \
+ } else \
+ PPC_STD(r, base, i); \
+ } while(0)
+#define PPC_BPF_STLU(r, base, i) do { PPC_STDU(r, base, i); } while(0)
+
#define SEEN_FUNC 0x1000 /* might call external helpers */
#define SEEN_STACK 0x2000 /* uses BPF stack */
#define SEEN_TAILCALL 0x4000 /* uses tail calls */