Implement yield from C hooks.

Get number of multiple results from C frame.
Add lj_cont_hook: restores multres and dispatch to static ins.
Can use fastcall for lj_dispatch_ins() now.

1 files changed, 4 insertions, 0 deletions

diff --git a/src/lj_frame.h b/src/lj_frame.h
index 398ec4e5..2704ee40 100644
--- a/src/lj_frame.h
+++ b/src/lj_frame.h
@@ -63,6 +63,7 @@ enum {
 #define CFRAME_OFS_PREV         (13*4)
 #define CFRAME_OFS_L            (12*4)
 #define CFRAME_OFS_PC           (6*4)
+#define CFRAME_OFS_MULTRES      (5*4)
 #define CFRAME_SIZE             (12*4)
 #elif LJ_TARGET_X64
 #if _WIN64
@@ -71,6 +72,7 @@ enum {
 #define CFRAME_OFS_L            (32*4)
 #define CFRAME_OFS_ERRF         (31*4)
 #define CFRAME_OFS_NRES         (30*4)
+#define CFRAME_OFS_MULTRES      (29*4)
 #define CFRAME_SIZE             (14*8)
 #else
 #define CFRAME_OFS_PREV         (4*8)
@@ -78,6 +80,7 @@ enum {
 #define CFRAME_OFS_L            (4*4)
 #define CFRAME_OFS_ERRF         (3*4)
 #define CFRAME_OFS_NRES         (2*4)
+#define CFRAME_OFS_MULTRES      (1*4)
 #define CFRAME_SIZE             (12*8)
 #endif
 #else
@@ -91,6 +94,7 @@ enum {
 #define cframe_errfunc(cf)      (*(int32_t *)(((char *)(cf))+CFRAME_OFS_ERRF))
 #define cframe_nres(cf)         (*(int32_t *)(((char *)(cf))+CFRAME_OFS_NRES))
 #define cframe_prev(cf)         (*(void **)(((char *)(cf))+CFRAME_OFS_PREV))
+#define cframe_multres(cf)  (*(uint32_t *)(((char *)(cf))+CFRAME_OFS_MULTRES))
 #define cframe_L(cf) \
   (&gcref(*(GCRef *)(((char *)(cf))+CFRAME_OFS_L))->th)
 #define cframe_pc(cf) \