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dictionary.inc
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dictionary.inc
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;
; entry:
;
; 08 - 1 byte flags
; - 1 byte word len
; - 1 byte input stack effects len
; - 1 byte output stack effects len
; - 4 bytes reserved
; 08 - prev addr
; 08 - code addr
; ?? - word chars (bytes padded to quad)
; ?? - stack effects (quads)
;
DE_HIDDEN = 00000001b
DE_IMMEDIATE = 00000010b
DE_CORE = 00000100b
DE_SE_KNOWN = 00001000b
FLAGS_OFFSET = 0
FLAGS_MASK = 0xff
WORD_LEN_OFFSET = 0x08
WORD_LEN_MASK = 0x00ff
IN_EFFECTS_LEN_OFFSET = 0x10
IN_EFFECTS_LEN_MASK = 0x0000ff
macro __w word, word_len, flags, code, ise_len, ose_len {
.##code:
db flags or DE_CORE, word_len, ise_len, ose_len
dd 0
dq _core_words.prev_word
dq code
db word
times ((word_len + 7) and -8) - word_len db 0
_core_words.prev_word = .##code
}
macro _w word, word_len, code, ise_len, ose_len {
__w word, word_len, 0, code, ise_len, ose_len
}
macro _wi word, word_len, code, ise_len, ose_len {
__w word, word_len, DE_IMMEDIATE, code, ise_len, ose_len
}
macro _ise e {
dq e
}
macro _ose e {
dq e
}
_core_words:
.prev_word = 0
_wi 'edx', 3, se_reg.edx, 0, 0
_wi 'ecx', 3, se_reg.ecx, 0, 0
_wi 'eax', 3, se_reg.eax, 0, 0
.se_reg_latest = .prev_word
.prev_word = 0
_wi '--', 2, seX_o_parse, 0, 0
_wi '))', 2, seX_parse_end, 0, 0
.se_parse_latest = .prev_word
.prev_word = 0
_w 'b,', 2, b_comma, 1, 0
_ise _AL
_w 'd,', 2, d_comma, 1, 0
_ise _EAX
_w 'q,', 2, q_comma, 1, 0
_ise _RAX
_wi ':', 1, colon, 0, 0
_wi ';', 1, semi, 0, 0
_w 'base', 4, base, 1, 0
_ise _AL
_wi 'entry', 5, _entry, 0, 0
_wi 'immediate', 9, immediate, 0, 0
_wi '((', 2, seX_i_parse, 0, 0
.latest = .prev_word
assert ($ - _core_words) and 7 = 0
dictionary_init:
mov esi, _dictionary.length
mov edx, PROT_RW
call mmap_buffer
mov rdi, _dictionary.base
stosq
stosq
mov [_dictionary.latest], _core_words.latest
ret
dictionary_deinit:
mov esi, _dictionary.length
mov rdi, [_dictionary.base]
mov eax, SYS_MUNMAP
syscall
ret
;
; expects
; - properly configured blue structure with non zero word len
;
dictionary_find:
mov rdi, [_dictionary.latest]
_find_from:
.find:
push rdi
mov rax, [rdi]
test al, DE_HIDDEN
jnz .hidden
inc rdi
mov rsi, _blue.word_len
mov ecx, [esi]
lodsb
cmp al, byte [rdi]
jne .next
add rdi, _dictionary.word_offset - 1
.check_word:
lodsb
cmp al, byte [rdi]
jne .next
inc rdi
dec cl
jnz .check_word
pop rax
jmp .done
.hidden:
.next:
pop rdi
add rdi, _dictionary.prev_word_offset
mov rdi, [rdi]
test rdi, rdi
jnz .find
xor eax, eax
.done:
ret
;
; expects
; - word in rax
;
_padded_word_length:
lea rcx, [rax + 1]
mov rcx, [rcx]
and ecx, 0xff
add ecx, 7
and ecx, -8
ret
;
; expects
; - word in rax
;
word_input_stack_effects:
lea rsi, [rax + 2]
mov rsi, [rsi]
and esi, 0xff
call _padded_word_length
xchg rsi, rcx
lea rsi, [rax + _dictionary.word_offset + rsi]
ret
;
; expects
; - value in al
;
b_comma:
mov rdi, [_code_buffer.here]
stosb
mov [_code_buffer.here], rdi
ret
;
; expects
; - value in eax
;
d_comma:
mov rdi, [_code_buffer.here]
stosd
mov [_code_buffer.here], rdi
ret
;
; expects
; - value in rax
;
q_comma:
mov rdi, [_code_buffer.here]
stosq
mov [_code_buffer.here], rdi
ret
;
; expects
; - value in al
;
base:
mov [_blue.base], al
ret
_bad_pad:
die ERR_BAD_PAD
_check_pad:
mov rax, [_dictionary.here]
mov rdi, [_dictionary.latest]
cmp rax, rdi
je _bad_pad
sub rax, rdi
and rax, 7
jnz _bad_pad
ret
_create_entry:
mov rdi, [_dictionary.here]
push rdi
mov eax, DE_HIDDEN
stosq
mov rax, [_dictionary.latest]
stosq
mov rax, [_code_buffer.here]
stosq
mov [_dictionary.here], rdi
pop rdi
mov [_dictionary.latest], rdi
call _check_pad
ret
_name_entry:
call parser_next_word
xor eax, eax
mov al, [_blue.word_len]
test al, al
jz .no_word
mov rdi, [_dictionary.latest]
inc rdi
stosb
mov ecx, eax
mov ebx, eax
add ebx, 7
and ebx, -8
sub ebx, ecx
mov rdi, [_dictionary.here]
mov rsi, _blue.word
.loop:
movsb
dec ecx
jnz .loop
mov ecx, ebx
test ecx, ecx
jz .done
xor eax, eax
.pad:
stosb
dec ecx
jnz .pad
.done:
mov [_dictionary.here], rdi
call _check_pad
ret
.no_word:
die ERR_NO_WORD
_reveal:
mov rdi, [_dictionary.latest]
mov al, byte [rdi]
xor al, DE_HIDDEN
stosb
ret
colon:
call _create_entry
call _name_entry
mov [_blue.mode], COMPILE
ret
semi:
mov al, 0xc3
call b_comma
call _reveal
mov [_blue.mode], INTERPRET
ret
_entry:
mov rax, [_dictionary.latest]
add rax, _dictionary.code_offset
mov rax, [rax]
sub rax, [_code_buffer.base]
mov [_blue.entry], eax
ret
immediate:
mov rdi, [_dictionary.latest]
mov al, byte [rdi]
or al, DE_IMMEDIATE
stosb
ret
se_bad:
die ERR_BAD_SE
seX_i_parse:
call parser_next_word
cmp [_blue.word_len], 0
je se_bad
mov rdi, _core_words.se_parse_latest
call _find_from
cmp rax, _core_words.seX_o_parse
je seX_o_parse
mov rdi, _core_words.se_reg_latest
call _find_from
test rax, rax
jz se_bad
add rax, _dictionary.code_offset
call qword [rax]
jmp seX_i_parse
seX_o_parse:
call parser_next_word
cmp [_blue.word_len], 0
je se_bad
mov rdi, _core_words.se_parse_latest
call _find_from
cmp rax, _core_words.seX_parse_end
je seX_parse_end
jmp se_bad
seX_parse_end:
mov rdi, [_dictionary.latest]
mov al, byte [rdi]
or al, DE_SE_KNOWN
stosb
mov rax, [_dictionary.latest]
call push_flow_in
ret
macro _se_reg reg, _REG {
.##reg:
call parser_next_word
cmp [_blue.word_len], 0
je se_bad
mov rax, _REG
mov rdi, [_dictionary.here]
stosq
mov [_dictionary.here], rdi
mov rdi, [_dictionary.latest]
add rdi, 2
mov al, byte [rdi]
inc al
stosb
ret
}
se_reg:
_se_reg eax, _EAX
_se_reg ecx, _ECX
_se_reg edx, _EDX