Kernel 0.93+

BIN/CSH.E.txt

@@ -3,7 +3,12 @@ NEW
 				.LIST OFF	
 *--------------------------------------
 CSH.E.SYNTAX	.EQ $C0
+CSH.E.STACKERR	.EQ $C2
 CSH.E.SOVERFLW	.EQ $C3
+*E.NOWHILE		.EQ $C4
+*E.NOFOR		.EQ $C5
+*E.NOIF			.EQ $C6
+CSH.E.UNEXPEOF	.EQ $C8
 CSH.E.UNDEF		.EQ $C9
 *
 CSH.E.NOVERFLW	.EQ $D0

BIN/CSH.I.txt

@@ -83,7 +83,7 @@ CSH.KW			>PSTR "if"
 				>PSTR "switch"
 				>PSTR "case"
 				>PSTR "break"
-				>PSTR "continue"		
+				>PSTR "continue"
 				>PSTR "float"
 				>PSTR "signed"			char,int,long
 				>PSTR "unsigned"		char,int,long

BIN/CSH.S.CORE.txt

@@ -74,10 +74,7 @@ CSH.Run.1		cmp #'#'
 				tax
 				jmp (J.CSH.KW.END,x) 
 				
-.4				pha
-				jsr CSH.SavePtr			Save Ptr, in case of while,for....
-				pla
-				jsr CSH.IsLetter
+.4				jsr CSH.IsLetter
 				bcc .5
 				
 
@@ -85,7 +82,8 @@ CSH.Run.1		cmp #'#'
 
 				bra .99					error, todo : PREOPS ++ --.....
 				
-.5				>LDYA L.CSH.KW
+.5				jsr CSH.SavePtr			Save Ptr, in case of while,for....
+				>LDYA L.CSH.KW
 				jsr CSH.LookupID
 
 				bcs .6					not an internal CSH keyword....
@@ -169,14 +167,13 @@ CSH.IF			jsr CSH.GetCharNB
 				cmp #'{'
 				bne .9
 				
-				jsr CSH.IsValue0		X = var type from ExpEval
-				bcc .6					Value=0, skip {{....}}
-
 				jsr CSH.GetNextCharNB	Skip '{'
 				bcs .99
 				
-				jsr CSH.Keyword.start 
-				bcs .99
+				jsr CSH.IsValue0		X = var type from ExpEval
+				bcc .6					Value=0, skip {{....}}
+
+
 				
 				lda #'}'				Tell '}' is expected at the end of block
 				jsr CSH.Push
@@ -184,26 +181,7 @@ CSH.IF			jsr CSH.GetCharNB
 	
 				rts
 				
-.6				ldx #1					expecting 1 '}' for now....
-
-.7				jsr CSH.GetNextCharNB
-				bcs .9
-				cmp #'{'
-				bne .71
-				inx
-				bra .7
-
-.71				cmp #'}'
-				bne .7
-				txa
-				beq .9
-				dex
-				bne .7
-				
-				jsr CSH.GetNextCharNB	skip '}'
-				
-				clc
-				rts
+.6				jmp CSH.SkipBlock
 				
 .9				lda #CSH.E.SYNTAX
 				sec
@@ -236,6 +214,7 @@ CSH.WHILE.END	jsr CSH.Pop
 				rts
 *--------------------------------------
 CSH.ELSE
+*--------------------------------------
 CSH.DO
 CSH.FOR
 CSH.SWITCH
@@ -943,7 +922,8 @@ CSH.GetVarValueOnStack
 * Input : Value on Stack, X = Var Type
 * Output : CC = true, CS = false
 *--------------------------------------
-CSH.IsValue0	cpx #CSH.T.FLOAT
+CSH.IsValue0	>DEBUG
+				cpx #CSH.T.FLOAT
 				bcc .1					char,int,long
 				
 				ldy CSH.TYPESIZE,x
@@ -954,15 +934,13 @@ CSH.IsValue0	cpx #CSH.T.FLOAT
 .8				clc
 				rts
 				
-.1				tax
-				lda CSH.TYPESIZE,x
+.1				jsr CSH.SIZEOF
 				tax
-				
-				lda #0
-				ldy #1
 
-.2				ora ZPVarData,y
-				iny
+				lda #0
+
+.2				ora (pStack)
+				inc pStack
 				dex
 				bne .2
 				
@@ -1039,6 +1017,22 @@ CSH.BOPS.LOR
 *--------------------------------------
 * Stack
 *--------------------------------------
+CSH.CheckStack	tax
+				>LDA.G CSH.StackPtr
+				beq .9
+				dec
+				tay
+				txa
+				cmp (ZPCSHStack),y
+				bne .9
+				
+				clc
+				rts
+				
+.9				lda #CSH.E.SYNTAX
+				sec
+				rts
+*--------------------------------------
 CSH.Push		pha
 				>LDA.G CSH.StackPtr
 				inc
@@ -1069,25 +1063,6 @@ CSH.Pop			>LDA.G CSH.StackPtr
 				sec
 				rts				
 *--------------------------------------
-CSH.CheckStack	tax
-				>LDA.G CSH.StackPtr
-				beq .9
-				dec
-				tay
-				txa
-				cmp (ZPCSHStack),y
-				bne .9
-				
-				tya
-				>STA.G CSH.StackPtr
-				
-				clc
-				rts
-				
-.9				lda #CSH.E.SYNTAX
-				sec
-				rts						
-*--------------------------------------
 * CHAR related Subs.....
 *--------------------------------------
 CSH.GetOPLen	ldy #0
@@ -1114,6 +1089,26 @@ CSH.GetIDLen	ldy #0
 .8				tya
 				rts
 *--------------------------------------
+CSH.SkipBlock	ldx #1					expecting 1 '}' for now....
+
+.1				jsr CSH.GetNextCharNB
+				bcs .9
+				cmp #'{'
+				bne .2
+				inx
+				bra .1
+
+.2				cmp #'}'
+				bne .1
+				txa
+				beq .9
+				dex
+				bne .1
+				
+				jmp CSH.GetNextCharNB	skip '}'
+				
+.9				rts				
+*--------------------------------------
 CSH.GetCharNB	jsr CSH.GetChar
 				bcs CSH.GetNextCharNB.RTS
 				jsr CSH.CheckCharNB
@@ -1212,8 +1207,6 @@ CSH.SIZEOF		txa
 *--------------------------------------
 * EXEC
 *--------------------------------------
-CSH.EXEC		jmp (J.CSH.EXEC,x)
-*--------------------------------------
 EXEC.printf		>SYSCALL printf2
 				rts				
 *--------------------------------------

BIN/CSH.S.txt

@@ -54,6 +54,7 @@ CS.START		cld
 				.DA CS.DOEVENT
 				.DA	CS.QUIT
 L.MSG.GREETINGS	.DA MSG.GREETINGS
+L.MSG.USAGE		.DA MSG.USAGE
 L.MSG.ECHOCRLF	.DA MSG.ECHOCRLF
 L.MSG.HEXWORD	.DA MSG.HEXWORD
 L.MSG.ERR		.DA MSG.ERR
@@ -119,11 +120,15 @@ CS.RUN			lda #$ff
 				sec
 				rts
 				
-.8				lda #0
+.8				lda #0					Exit Code = Success
 				sec
 				rts
 				
-.90				lda #E.SYN				Exit Code = Succes 
+.90				>PUSHBI 0
+				>LDYA L.MSG.USAGE
+				>SYSCALL printf
+				
+				lda #E.SYN
 				sec						QUIT Process
 .99				rts
 *--------------------------------------
@@ -247,15 +252,22 @@ CS.END
 * Initialized DATA
 *--------------------------------------
 MSG.Greetings	.AZ "\r\nCSH-Shell %d.%d\r\n\r\n"
+MSG.USAGE		.AS "Usage : CSH file\r\n"
+				.AS "   -D : Debug Mode\r\n"
+				.AS "   -T : Trace On"
 MSG.ECHOCRLF	.AZ "\r\n"
 MSG.HEXWORD		.AZ "[%H]"
 MSG.ERR			.AZ "      ^\r\nLine #%D:"
+*--------------------------------------
+OptionList		>PSTR "DdTt"
+OptionVars		.DA #bDebug,#bDebug,#bTrace,#bTrace
 *--------------------------------------
 				.INB USR/SRC/BIN/CSH.I
 *--------------------------------------
 				.DUMMY
 				.OR 0
 DS.START		.INB USR/SRC/BIN/CSH.D
+bDebug			.BS 1
 bTrace			.BS 1
 DS.END
 				.ED