pop rax
jmp qword [rax] ; goto code of that FORTH word (64 bit jump)
- WORD p_exit, 'EXIT',fasm
+ WORD p_sysexit, 'EXIT',
+ ;; ( v -- )
+ ;; Terminate RRQFORTH with error code
+ dq sys_exit
+
+ WORD p_return, 'RETURN',fasm
;; ( -- ) ( R: addr -- )
;; Returns execution to the calling definition as per the
;; return stack.
include 'math.asm'
include 'logic.asm'
include 'stdio.asm'
+include 'temp.asm'
include 'compile.asm'
WORD p_program_version,'PROGRAM_VERSION',dostring
- STRING 'RRQ Forth version 0.1 - 2021-05-22',10
+ STRING 'RRQ Forth version 0.1 - 2021-06-05',10
WORD p_stdin,'STDIN',dovalue
;; Initialised to hold a STREAM for fd 0
cmp rax,1
jne p_lparen_loop
push rbx
- push qword ')'
+ push p_lparen_rparen
push 1
DOFORTH p_strncmp
pop rax
p_lparen_exit:
popr rsi
next
-
+p_lparen_rparen: db ')',0
+
;;; ******** The main entry point. ********
;;; This could be set up as a WORD but it isn't
main_is_not_verbose:
ret
+ WORD p_process_args_var,'PROCESS-ARGS-VAR',dovariable
+ ;; ( -- a )
+ ;; Two cells for iterating and load the main args
+p_process_args_ptr: dq 0
+p_process_args_end: dq 0
+
+ WORD p_process_args,'PROCESS-ARGS',fasm
+ pushr rsi
+ mov rax,qword [p_args_DFA] ; args*
+ mov rbx,qword [rax] ; count
+ shl rbx,3
+ add rax,8
+ add rbx,rax ; end
+ mov qword [p_process_args_end],rbx
+ add rax,8
+ mov qword [p_process_args_ptr],rax
+p_process_args_loop:
+ mov rax,qword [p_process_args_ptr]
+ cmp rax,qword [p_process_args_end]
+ jge p_process_args_done
+ add qword [p_process_args_ptr],8
+ mov rax,qword [rax]
+ mov bl,[rax]
+ cmp bl,'-'
+ je p_process_args_loop
+ push rax
+ push rax
+ FORTH
+ dq p_strlen, p_load_file
+ BRANCH 0, p_quit_ERROR
+ ENDFORTH
+ jmp p_process_args_loop
+p_process_args_done:
+ popr rsi
+ next
+
;;; This word is also the last word before syscalls
last_forth_word:
WORD p_quit,'QUIT',fasm
push 10000
DOFORTH p_stream
pop qword [p_stdin_DFA] ; Assign STDIN
+ DOFORTH p_process_args
p_quit_INITIALIZED:
;; Setup INPUT from STDIN
FORTH
- dq p_verboseQ
- dq p_get
+ dq p_verboseQ, p_get
BRANCH 0,p_quit_EVAL
- dq p_program_version
- dq p_tell
+ dq p_program_version, p_tell
p_quit_EVAL:
dq p_stdin, p_evaluate_stream
BRANCH 0,p_quit_ERROR
- dq p_false
- dq sys_exit
+ dq p_false, sys_exit
p_quit_ERROR:
dq p_literal_string
STRING 10,'*** Unknown word: '
dq p_tell
- dq p_this_word
- dq p_2get
- dq p_tell
- dq p_literal_string
- STRING 10
- dq p_tell
+ dq p_this_word, p_2get, p_tell
+ dq p_nl, p_emit
ENDFORTH
mov rbp,RS_TOP ; reset the return stack
jmp p_quit_INITIALIZED