lua LCD (Lua Compact Debug) patch

 LCD developed 9/2015 by Terry Ellison

 We've already discarded the ldebug module from lua
 it only makes sense to discard the debug info as well
 adds 1.5 K to the binary
 saves 8 Kb on the base state
 once scripts start getting called i've seen 10-50Kb savings but it all depends on
 what exactly you are running

Change-Id: Ibb74f344df1c4c96380ec6c98b010a810e9ae9cc

1 files changed, 18 insertions, 1 deletions

diff --git a/apps/plugins/lua/ldebug.h b/apps/plugins/lua/ldebug.h
index 22226b4096..7aa9f459d5 100644
--- a/apps/plugins/lua/ldebug.h
+++ b/apps/plugins/lua/ldebug.h
@@ -13,7 +13,19 @@
 
 #define pcRel(pc, p)    (cast(int, (pc) - (p)->code) - 1)
 
-#define getline(f,pc)   (((f)->lineinfo) ? (f)->lineinfo[pc] : 0)
+#ifdef LUA_OPTIMIZE_DEBUG
+#  include "lvm.h"
+#  define getline(f,pc) (((f)->packedlineinfo) ? luaG_getline((f), pc) : 0)
+#  define INFO_FILL_BYTE   0x7F
+#  define INFO_DELTA_MASK  0x80
+#  define INFO_SIGN_MASK   0x40
+#  define INFO_DELTA_6BITS 0x3F
+#  define INFO_DELTA_7BITS 0x7F
+#  define INFO_MAX_LINECNT  126
+#  define lineInfoTop(fs) ((fs)->f->packedlineinfo + (fs)->lastlineOffset)
+#else
+#  define getline(f,pc) (((f)->lineinfo) ? (f)->lineinfo[pc] : 0)
+#endif
 
 #define resethookcount(L)       (L->hookcount = L->basehookcount)
 
@@ -30,4 +42,9 @@ LUAI_FUNC void luaG_errormsg (lua_State *L);
 LUAI_FUNC int luaG_checkcode (const Proto *pt);
 LUAI_FUNC int luaG_checkopenop (Instruction i);
 
+#ifdef LUA_OPTIMIZE_DEBUG
+LUAI_FUNC int luaG_getline (const Proto *f, int pc);
+LUAI_FUNC int luaG_stripdebug (lua_State *L, Proto *f, int level, int recv);
+#endif
+
 #endif