;;; Words for stack manipulations
+ WORD p_dsp,'D[n]',fasm
+ ;; ( n -- a )
+ ;; Push the address of the n:th cell below n onto the stack
+ pop rax
+ shl rax,3
+ add rax,rsp
+ push rax
+ next
+
+ WORD p_depth,'DEPTH',fasm
+ ;; ( -- v )
+ ;; Push stack depth (before push)
+ lea rax,[DS_TOP]
+ sub rax,rsp
+ shr rax,3
+ push rax
+ next
+
WORD p_dup, 'DUP',fasm
;; ( v -- v v )
;; Duplicate top ov stack value.
push qword [rsp+rax]
next
- WORD w6.2.2300, 'TUCK',fasm
+ WORD p_tuck, 'TUCK',fasm
;; ( x1 x2 -- x2 x1 x2 )
- ;; insert the top stack value into below second stack value.
+ ;; copy the top stack value into below second stack value.
pop rax
pop rbx
push rax
;;; ========================================
;;; Return stack operations
- WORD p_ltR, '>R',fasm
+ WORD p_gtR, '>R',fasm
;; ( x -- ) ( R: -- x )
;; Move x to the return stack.
pop rax
;; Copy x from the return stack to the data stack.
push qword [rbp]
next
+
+ WORD p_rbp,'RSP',fasm
+ ;; Push the return stack pointer to the data stack
+ push rbp
+ next
+
+ WORD p_rbpn,'R[n]',fasm
+ ;; ( n -- a )
+ ;; push the address of the n:th cell on the return stack
+ mov rax,qword [rsp]
+ shl rax,3
+ add rax,rbp
+ mov qword [rsp],rax
+ next