mov qword [rbx+24],rcx ; PFA (length)
pop rsi ; chars* (source)
lea rdi,[rbx+32] ; (dest)
- ;; clear DF
+ cld
p_create_COPY:
movsb
dec rcx
popr rsi
next
- WORD p_allot,'ALLOT',fasm
+ WORD p_allot,'ALLOT'
;; ( n -- )
;; Allocate n bytes on the heap
- pop rax
- add qword [p_here_DFA],rax
- next
+ dq p_here, p_put_plus, p_return
- WORD p_quote,"'",fasm
+ WORD p_quote,"'"
;; ( "word" -- cfa )
;; Find the following word and push its cfa, or 0
- pushr rsi
- DOFORTH p_input, p_get, p_read_word, p_find
- cmp qword[rsp],0
- jne p_quote_tfa
- add rsp,16
- mov qword[rsp],0
- jmp p_quote_end
-p_quote_tfa:
- mov rax,qword [rsp]
- tfa2cfa rax
- mov qword [rsp],rax
+ dq p_input, p_get, p_read_word, p_find
+ BRANCH 0,p_quote_end
+ dq p_tfa2cfa
p_quote_end:
- popr rsi
- next
+ dq p_return
WORD p_bracketed_quote,"[']",doforth,IMMEDIATE
;; Compilation ( "word" -- cfa )
- ;; Find the following word and push its cfa, or 0
- dq p_literal
- dq p_literal
- dq p_comma
- dq p_quote
- dq p_comma
- dq p_exit
+ ;; Compile down " LIT value "
+ dq p_literal, p_literal, p_comma,p_quote, p_comma, p_return
- WORD p_comma,',',fasm
+ WORD p_comma,','
;; ( v -- )
;; Put cell value onto the heap and advance "HERE"
- mov rax,qword [p_here_DFA]
- pop rbx
- mov qword [rax],rbx
- add rax,8
- mov qword [p_here_DFA],rax
- next
-
- WORD p_Ccomma,'C,',fasm
+ dq p_here, p_literal, 8, p_get_n_increment, p_put, p_return
+
+ WORD p_Ccomma,'C,'
;; ( c -- )
;; Put byte value onto the heap and advance "HERE"
- mov rax,qword [p_here_DFA]
- pop rbx
- mov byte [rax],bl
- inc rax
- mov qword [p_here_DFA],rax
- next
+ dq p_here, p_Cput, p_literal, 1, p_here, p_put_plus, p_return
WORD p_does,"DOES>",fasm,IMMEDIATE
;; ( -- )
add rsi,8
next
- WORD p_literal_string,'S"',fasm,IMMEDIATE ;; " (fool emacs)
+ WORD p_literal_string,'LIT-STRING',fasm
;; ( -- char* n )
- ;; Save string on heap to make available at interpretation
- ;; not for interactive use!!
- cmp qword [p_state_DFA],0
- je p_literal_string_executing
+ ;; Save NUL string length and pointer on heap to make
+ ;; available at interpretation. Not for interactive use!!
+ mov rax,qword [rsi]
+ add rsi,8
+ push rsi
+ add rsi,rax
+ dec rax
+ push rax
+ next
+
+
+ WORD p_literal_string_compile,'S"',fasm,IMMEDIATE ;; " (fool emacs)
+ ;; ( "..." -- )
+ ;; Lay out a LIT-STRING and a NUL string with length
pushr rsi
mov rdi,qword [p_here_DFA]
mov qword [rdi],p_literal_string
DOFORTH p_double_quote
pop rcx
pop rsi
+ inc rcx ; include the terminating NUL in count
mov rdi,qword [p_here_DFA]
mov qword [rdi],rcx
add rdi,8
+ cld
p_literal_string_copy:
dec rcx
jl p_literal_string_copied
popr rsi
next
-p_literal_string_executing:
- mov rax,qword [rsi]
- add rsi,8
- push rsi
- push rax
- add rsi,rax
- next
-
WORD p_state,'STATE',dovariable
;; Interpretation state (0=interpreting, 1=compiling)
dq 0
cmp al,'Z'
jg p_number_alpha
sub al,'A'-10
+ cmp rax,qword [p_base_DFA]
+ jge p_number_BAD
jmp p_number_CONSUME
p_number_alpha:
cmp al,'a'
cmp al,'z'
jg p_number_BAD
sub al,'a'-10
+ cmp rax,qword [p_base_DFA]
+ jge p_number_BAD
jmp p_number_CONSUME
p_number_BAD:
push qword 0
dq p_literal, 1
p_evaluate_stream_BAD:
dq p_Rgt, p_input, p_put ; restore previous stream
- dq p_exit
+ dq p_literal,0, p_state, p_put ; set interactive mode
+ dq p_return
WORD p_colon,':'
;; ( -- )
dq p_tfa2cfa
dq p_put
dq p_right_bracket
- dq p_exit
+ dq p_return
WORD p_semicolon,';',,IMMEDIATE
;; ( -- )
- ;; Lay out p_exit, and set interpreting mode
- dq p_left_bracket
- dq p_literal, p_exit
- dq p_comma
- dq p_left_bracket
- dq p_exit
+ ;; Lay out p_return, and set interpreting mode
+ dq p_literal, p_return, p_comma, p_left_bracket, p_return
WORD p_immediate,'IMMEDIATE',fasm,IMMEDIATE
;; ( -- )
mov qword [rax+16],1 ; set the flags field to 1
next
- WORD p_open_file_quote,'OPEN-FILE"'
- ;; ( "name" -- fd )
- dq p_double_quote
- dq p_create
- dq p_tfa2namez
- dq p_literal,0
- dq p_literal,0
- dq sys_open
- dq p_exit
+ WORD p_load_buffer_size,'LOAD-BUFFER-SIZE',dovariable
+ ;; ( -- a )
+ ;; The buffer size (in bytes) used by LOAD-FILE
+ dq 15000
+
+ WORD p_open_file,'OPEN-FILE',fasm
+ ;; ( chaz* n -- fd )
+ ;; Open the nominated file
+ pushr rsi
+ add rsp,8 ; drop n ... assuming NUL-ended string
+ push qword 0
+ push qword 0
+ DOFORTH sys_open
+ popr rsi
+ next
- WORD p_load_file_quote,'LOAD-FILE"'
- ;; ( "name" -- )
- ;; Create a word for the nominated file for a stream to,
- ;; and store that stream pointer, then invoke evaluate-stream
- dq p_open_file_quote ; fd
- dq p_literal, 15000 ; buffer size
- dq p_stream
- dq p_dup
- dq p_comma
+ WORD p_load_file,'LOAD-FILE'
+ ;; ( chaz* n -- )
+ dq p_open_file
+ dq p_dup, p_0less
+ BRANCH 1,p_load_file_badfile
+ dq p_load_buffer_size, p_get
+ dq p_stream, p_dup, p_gtR
dq p_evaluate_stream
- dq p_exit
+ dq p_Rgt, p_unstream
+ BRANCH ,p_load_file_exit
+p_load_file_badfile:
+ dq p_literal_string
+ STRING '** open file error: '
+ dq p_tell, p_dot, p_nl, p_emit
+ dq p_literal,1
+p_load_file_exit:
+ dq p_return
projects / rrq / rrqforth.git / blobdiff