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authormidipix <writeonce@midipix.org>2016-10-24 18:58:58 -0400
committermidipix <writeonce@midipix.org>2016-11-10 23:35:51 -0500
commitbc24681ca896900e9b61a2aa6d26b467f038815b (patch)
treefcef64320cc6da8b864a53f3ddb961502651c362 /src
parentc9c5f77d90d27819aa63a49264cdb37364c663a5 (diff)
downloadperk-bc24681ca896900e9b61a2aa6d26b467f038815b.tar.bz2
perk-bc24681ca896900e9b61a2aa6d26b467f038815b.tar.xz
driver: internals: added the static inlined pe_get_driver_ictx() helper.
Diffstat (limited to 'src')
-rw-r--r--src/internal/perk_driver_impl.h14
1 files changed, 14 insertions, 0 deletions
diff --git a/src/internal/perk_driver_impl.h b/src/internal/perk_driver_impl.h
index 5063fa1..bbd5f44 100644
--- a/src/internal/perk_driver_impl.h
+++ b/src/internal/perk_driver_impl.h
@@ -44,4 +44,18 @@ struct pe_unit_ctx_impl {
struct pe_unit_ctx uctx;
};
+
+static inline struct pe_driver_ctx_impl * pe_get_driver_ictx(
+ const struct pe_driver_ctx * dctx)
+{
+ uintptr_t addr;
+
+ if (dctx) {
+ addr = (uintptr_t)dctx - offsetof(struct pe_driver_ctx_impl,ctx);
+ return (struct pe_driver_ctx_impl *)addr;
+ }
+
+ return 0;
+}
+
#endif