shithub: libmujs

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Document some trickier byte codes.

--- a/Makefile

+++ b/Makefile

@@ -16,7 +16,7 @@

 	ar cru $@ $^

 opnames.h : jscompile.h

-	grep 'OP_' jscompile.h | sed 's/OP_/"/;s/,/",/' | tr A-Z a-z > opnames.h

+	grep 'OP_' jscompile.h | sed 's/OP_/"/;s/,.*/",/' | tr A-Z a-z > opnames.h

 jsdump.c : opnames.h

--- a/jscompile.c

+++ b/jscompile.c

@@ -160,7 +160,7 @@

 static void assignop(JF, js_Ast *exp, int opcode)

 {

 	clval(J, F, exp->a);

-	emit(J, F, OP_DUP_LOAD);

+	emit(J, F, OP_LOAD);

 	cexp(J, F, exp->b);

 	emit(J, F, opcode);

 	emit(J, F, OP_STORE);

--- a/jscompile.h

+++ b/jscompile.h

@@ -22,28 +22,29 @@

 	OP_FUNDEC,

 	OP_FUNEXP,

-	OP_LOADVAR,

-	OP_LOADINDEX,

-	OP_LOADMEMBER,

-	OP_AVAR,

-	OP_AINDEX,

-	OP_AMEMBER,

+	OP_LOADVAR,	/* -(name)- <value> */

+	OP_LOADINDEX,	/* <obj> <idx> -- <value> */

+	OP_LOADMEMBER,	/* <obj> -(name)- <value> */

-	OP_LOAD,

-	OP_DUP_LOAD,

-	OP_STORE,

+	OP_AVAR,	/* -(name)- <addr> */

+	OP_AINDEX,	/* <obj> <idx> -- <addr> */

+	OP_AMEMBER,	/* <obj> -(name)- <addr> */

-	OP_CALL,

-	OP_TCALL,

+	OP_LOAD,	/* <addr> -- <addr> <value> */

+	OP_STORE,	/* <addr> <value> -- <value> */

+

+	OP_CALL,	/* <fun> <args...> -(numargs)- <return value> */

+	OP_TCALL,	/* <obj> <fun> <args...> -(numargs)- <return value> */

 	OP_NEW,

-	OP_DELETE,

+	OP_DELETE,	/* <addr> -- <success> */

+	OP_PREINC,	/* <addr> -- <value+1> */

+	OP_PREDEC,	/* <addr> -- <value-1> */

+	OP_POSTINC,	/* <addr> -- <value> */

+	OP_POSTDEC,	/* <addr> -- <value> */

+

 	OP_VOID,

 	OP_TYPEOF,

-	OP_PREINC,

-	OP_POSTINC,

-	OP_PREDEC,

-	OP_POSTDEC,

 	OP_POS,

 	OP_NEG,

 	OP_BITNOT,