nik/lush
1
1
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

jumps in 'for' loops don't need to be signed

Browse Source
This commit is contained in:
Roberto Ierusalimschy
2017-08-14 15:33:14 -03:00
parent f185c0132e
commit ac65bab25f
4 changed files with 38 additions and 20 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
lopcodes.h
View File

@@ -1,5 +1,5 @@
/*
** $Id: lopcodes.h,v 1.154 2017/05/08 16:08:01 roberto Exp roberto $
** $Id: lopcodes.h,v 1.155 2017/06/29 15:38:41 roberto Exp roberto $
** Opcodes for Lua virtual machine
** See Copyright Notice in lua.h
*/
@@ -229,12 +229,12 @@ OP_CALL,/* A B C R(A), ... ,R(A+C-2) := R(A)(R(A+1), ... ,R(A+B-1)) */
OP_TAILCALL,/* A B C return R(A)(R(A+1), ... ,R(A+B-1)) */
OP_RETURN,/* A B return R(A), ... ,R(A+B-2) (see note) */
OP_FORLOOP,/* A sBx R(A)+=R(A+2);
if R(A) <?= R(A+1) then { pc+=sBx; R(A+3)=R(A) }*/
OP_FORPREP,/* A sBx R(A)-=R(A+2); pc+=sBx */
OP_FORLOOP,/* A Bx R(A)+=R(A+2);
if R(A) <?= R(A+1) then { pc-=Bx; R(A+3)=R(A) }*/
OP_FORPREP,/* A Bx R(A)-=R(A+2); pc+=Bx */
OP_TFORCALL,/* A C R(A+3), ... ,R(A+2+C) := R(A)(R(A+1), R(A+2)); */
OP_TFORLOOP,/* A sBx if R(A+1) ~= nil then { R(A)=R(A+1); pc += sBx }*/
OP_TFORLOOP,/* A Bx if R(A+1) ~= nil then { R(A)=R(A+1); pc -= Bx }*/
OP_SETLIST,/* A B C R(A)[(C-1)*FPF+i] := R(A+i), 1 <= i <= B */