Static tramp v5 (#624)

[platform/upstream/libffi.git] / src / x86 / internal64.h

diff --git a/src/x86/internal64.h b/src/x86/internal64.h
index 512e955..282b408 100644 (file)
--- a/src/x86/internal64.h
+++ b/src/x86/internal64.h
@@ -20,3 +20,17 @@
 #define UNIX64_FLAG_RET_IN_MEM (1 << 10)
 #define UNIX64_FLAG_XMM_ARGS   (1 << 11)
 #define UNIX64_SIZE_SHIFT      12
+
+#if defined(FFI_EXEC_STATIC_TRAMP)
+/*
+ * For the trampoline code table mapping, a mapping size of 4K (base page size)
+ * is chosen.
+ */
+#define UNIX64_TRAMP_MAP_SHIFT 12
+#define UNIX64_TRAMP_MAP_SIZE  (1 << UNIX64_TRAMP_MAP_SHIFT)
+#ifdef ENDBR_PRESENT
+#define UNIX64_TRAMP_SIZE      40
+#else
+#define UNIX64_TRAMP_SIZE      32
+#endif
+#endif