X-Git-Url: https://git.rrq.au/?a=blobdiff_plain;f=machine.asm;h=4628077226d1c0487e15c708a584a942a48313f1;hb=1e20129cc5801258ef162be39d764693511ff6fb;hp=90310145359539274faf91e6aece21e0fffb4e00;hpb=74e26fb7ed992b0c8a53988eb4e717ec3e04248a;p=rrq%2Frrqforth.git

diff --git a/machine.asm b/machine.asm
index 9031014..4628077 100644
--- a/machine.asm
+++ b/machine.asm
@@ -97,16 +97,15 @@ macro ENDFORTH {
 ;;; ========================================
 ;;; The DOFORTH lays out a single FORTH call
 
-macro DOFORTH label {
+macro DOFORTH [label] {
+common
 	FORTH
+forward
 	dq label
+common
 	ENDFORTH
 }
 
-	previous_word = 0	; Used for chaining the words
-
-	IMMEDIATE = 1		; optional flag (symbol)
-
 ;;; ========================================
 ;;; Macro WORD starts a FORTH word definition in this code.
 ;;; The layout of a word is as follows:
@@ -122,6 +121,8 @@ macro DOFORTH label {
 ;;; CFA: [8 bytes] pointer to the word's "doer" code
 ;;; DFA: [? bytes] the word's data field
 
+IMMEDIATE = 1		; optional flag (symbol)
+
 macro WORD label, name, doer, flags, previous, offset {
 	local pname
 	;; align 8
@@ -196,11 +197,12 @@ macro dfa2tfa reg {
 	sub reg,24
 	mov reg,qword [reg]
 }
-macro pushpname rg { 	; ( reg -- chars* length )
-	add rg,8
-	push rg
-	sub rg,8
-	push qword [rg]
+;;; Code snippet to push a pname string with address and 64-bit length field.
+;;; The register is advanced to point at the text part.
+macro pushpname reg {
+	add reg,8
+	push reg
+	push qword [reg-8]
 }
 ;;; ========================================
 ;;; The BLOCK macro lays out the length for a subsequent block to the
@@ -231,7 +233,19 @@ macro BRANCH zero,label {
 	if zero in <0>
 	    dq p_zero_branch
 	else
-	    dq p_zero_branch
+	    dq p_branch
 	end if
 	dq label - $ - 8
 }
+
+;;; ========================================
+;;; The STREAM macro starts an in-core FORTH STREAM area. See WORD
+;;; STREAM for details.
+	macro STREAM endlabel {
+	local datastart
+	dq $+32
+	dq -1
+	dq endlabel - datastart
+	dq 0
+datastart:
+	}