X-Git-Url: https://git.rrq.au/?a=blobdiff_plain;f=machine.asm;h=082934cfa75897dab0cb1a82994d391fde60862b;hb=3080215f0d03403858b04f5bab8332a9b66a4adf;hp=8da016a7854214740c82e0957facbba3b3636520;hpb=86231a519d2f4966c99091d4aa532b2c4e05b1fa;p=rrq%2Frrqforth.git

diff --git a/machine.asm b/machine.asm
index 8da016a..082934c 100644
--- a/machine.asm
+++ b/machine.asm
@@ -73,6 +73,7 @@ macro popr x {
 ;;; referring to the doer field of the called word.
 
 macro next {
+	call p_calltrace_DFA
 	lodsq			; mov rax, [rsi] + add rsi,8
 	jmp qword [rax]		; goto code of that FORTH word (64 bit jump)
 }
@@ -97,16 +98,15 @@ 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 +122,8 @@ 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
@@ -153,7 +155,7 @@ label:
 	    dq doforth
 	else
 	    if doer in <fasm>
-	        dq label#_DFA
+	        dq dofasm ; label#_DFA
 	    else
 	        dq doer
 	    end if
@@ -165,10 +167,17 @@ label#_DFA:
 macro tfa2cfa reg {
 	mov reg,qword [reg+8]
 }
+macro tfa2does reg {
+	tfa2cfa reg
+	sub reg,8
+}
 macro tfa2dfa reg {
 	tfa2cfa reg
 	add reg,8
 }
+macro tfa2flags reg {
+	add reg,16
+}
 macro tfa2pfa reg {
 	add reg,24
 }
@@ -189,11 +198,12 @@ 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
@@ -215,6 +225,31 @@ datastart:
 forward
 	db data
 common
+	db 0
 dataend:
 	}
 
+;;; ========================================
+;;; The BRANCH macro lays out FORTH words BRANCH and 0BRANCH with offset
+macro BRANCH zero,label {
+	if zero in <0>
+	    dq p_zero_branch
+	else if zero in <1>
+	    dq p_true_branch
+	else
+	    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:
+	}