Return support for 32-bit jumps on x86-64

Add an option to allow the caller to decide whether to use 32-bit or 64-bit
jumps (the latter requires almost 3 times more space (5 vs 14 bytes)).

Also see: #13

1 files changed, 6 insertions, 1 deletions

diff --git a/subhook.h b/subhook.h
index 5b8819f..79e94ee 100644
--- a/subhook.h
+++ b/subhook.h
@@ -85,10 +85,15 @@
 	#endif
 #endif
 
+typedef enum subhook_options {
+	/* Use 64-bit jump method on x86-64 (requires more space). */
+	SUBHOOK_OPTION_64BIT_OFFSET = 1u << 1
+} subhook_options_t;
+
 struct subhook;
 typedef struct subhook *subhook_t;
 
-SUBHOOK_EXPORT subhook_t SUBHOOK_API subhook_new(void *src, void *dst);
+SUBHOOK_EXPORT subhook_t SUBHOOK_API subhook_new(void *src, void *dst, subhook_options_t options);
 SUBHOOK_EXPORT void SUBHOOK_API subhook_free(subhook_t hook);
 
 SUBHOOK_EXPORT void *SUBHOOK_API subhook_get_src(subhook_t hook);