version 1.27, 2000/06/14 20:31:47
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version 1.48, 2003/01/06 11:18:59
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Line 1
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\ SEE.FS highend SEE for ANSforth 16may93jaw |
\ SEE.FS highend SEE for ANSforth 16may93jaw |
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\ Copyright (C) 1995 Free Software Foundation, Inc. |
\ Copyright (C) 1995,2000 Free Software Foundation, Inc. |
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\ This file is part of Gforth. |
\ This file is part of Gforth. |
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Line 16
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\ You should have received a copy of the GNU General Public License |
\ You should have received a copy of the GNU General Public License |
\ along with this program; if not, write to the Free Software |
\ along with this program; if not, write to the Free Software |
\ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
\ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. |
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\ May be cross-compiled |
\ May be cross-compiled |
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Line 28
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require look.fs |
require look.fs |
require termsize.fs |
require termsize.fs |
require wordinfo.fs |
require wordinfo.fs |
[IFUNDEF] .name : .name name>string type space ; [THEN] |
[IFUNDEF] .name |
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: id. ( nt -- ) \ gforth |
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\G Print the name of the word represented by @var{nt}. |
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\ this name comes from fig-Forth |
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name>string type space ; |
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' id. alias .id ( nt -- ) |
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\G F83 name for @code{id.}. |
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' id. alias .name ( nt -- ) |
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\G Gforth <=0.5.0 name for @code{id.}. |
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[THEN] |
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decimal |
decimal |
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Line 87 DEFER nlcount ' noop IS nlcount
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Line 99 DEFER nlcount ' noop IS nlcount
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IF 2drop ELSE XPos +! C-Output @ IF emit ELSE drop THEN |
IF 2drop ELSE XPos +! C-Output @ IF emit ELSE drop THEN |
THEN ; |
THEN ; |
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DEFER .string |
DEFER .string ( c-addr u n -- ) |
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[IFDEF] Green |
[IFDEF] Green |
VARIABLE Colors Colors on |
VARIABLE Colors Colors on |
Line 108 VARIABLE Colors Colors on
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Line 120 VARIABLE Colors Colors on
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' (.string) IS .string |
' (.string) IS .string |
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: c-\type ( c-addr u -- ) |
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\ type string in \-escaped form |
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begin |
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dup while |
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2dup newline string-prefix? if |
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'\ cemit 'n cemit |
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newline nip /string |
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else |
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over c@ |
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dup '" = over '\ = or if |
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'\ cemit cemit |
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else |
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dup bl 127 within if |
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cemit |
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else |
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base @ >r try |
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8 base ! 0 <<# # # # '\ hold #> ctype #>> 0 |
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recover |
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endtry |
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r> base ! throw |
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endif |
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endif |
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1 /string |
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endif |
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repeat |
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2drop ; |
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: .struc |
: .struc |
uppercase on Str# .string ; |
uppercase on Str# .string ; |
Line 176 ACONSTANT MaxTable
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Line 214 ACONSTANT MaxTable
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: MyBranch ( a-addr -- a-addr a-addr2 ) |
: MyBranch ( a-addr -- a-addr a-addr2 ) |
\ finds branch table entry for branch at a-addr |
\ finds branch table entry for branch at a-addr |
dup @ over + |
dup @ |
BranchAddr? |
BranchAddr? |
BEGIN |
BEGIN |
WHILE 1 cells - @ |
WHILE 1 cells - @ |
over <> |
over <> |
WHILE dup @ over + |
WHILE dup @ |
MoreBranchAddr? |
MoreBranchAddr? |
REPEAT |
REPEAT |
SearchPointer @ 3 cells - |
SearchPointer @ 3 cells - |
Line 219 ACONSTANT MaxTable
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Line 257 ACONSTANT MaxTable
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BranchPointer @ 1 cells - ! ; |
BranchPointer @ 1 cells - ! ; |
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: Branch! ( a-addr rel -- a-addr ) |
: Branch! ( a-addr rel -- a-addr ) |
over + over ,Branch ,Branch 0 ,Branch ; |
over ,Branch ,Branch 0 ,Branch ; |
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\ over + over ,Branch ,Branch 0 ,Branch ; |
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\ DEFER CheckUntil |
\ DEFER CheckUntil |
VARIABLE NoOutput |
VARIABLE NoOutput |
Line 233 VARIABLE C-Pass
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Line 272 VARIABLE C-Pass
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: Display? ( -- flag ) C-Pass @ 1 = ; |
: Display? ( -- flag ) C-Pass @ 1 = ; |
: Debug? ( -- flag ) C-Pass @ 2 = ; |
: Debug? ( -- flag ) C-Pass @ 2 = ; |
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: back? ( n -- flag ) 0< ; |
: back? ( addr target -- addr flag ) |
: ahead? ( n -- flag ) 0> ; |
over u< ; |
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: .word ( addr x -- addr ) |
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\ print x as a word if possible |
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dup look 0= IF |
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drop dup threaded>name dup 0= if |
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2drop dup 1 cells - @ dup body> look |
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IF |
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nip dup ." <" name>string rot wordinfo .string ." > " |
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ELSE |
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drop ." <" 0 .r ." > " |
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THEN |
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EXIT |
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then |
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THEN |
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nip dup cell+ @ immediate-mask and |
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IF |
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bl cemit ." POSTPONE " |
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THEN |
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dup name>string rot wordinfo .string |
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; |
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: c-call ( addr1 -- addr2 ) |
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Display? IF |
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dup @ body> .word bl cemit |
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THEN |
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cell+ ; |
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: c-lit |
: c-callxt ( addr1 -- addr2 ) |
Display? IF |
Display? IF |
dup @ dup abs 0 <# #S rot sign #> 0 .string bl cemit |
dup @ .word bl cemit |
THEN |
THEN |
cell+ ; |
cell+ ; |
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\ here docon: , docol: , dovar: , douser: , dodefer: , dofield: , |
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\ here over - 2constant doers |
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: c-lit ( addr1 -- addr2 ) |
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Display? IF |
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dup @ dup body> dup cfaligned over = swap in-dictionary? and if |
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( addr1 addr1@ ) |
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dup body> @ dovar: = if |
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drop c-call EXIT |
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endif |
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endif |
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\ !! test for cfa here, and print "['] ..." |
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dup abs 0 <# #S rot sign #> 0 .string bl cemit |
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endif |
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cell+ ; |
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: c-lit+ ( addr1 -- addr2 ) |
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Display? if |
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dup @ dup abs 0 <# #S rot sign #> 0 .string bl cemit |
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s" + " 0 .string |
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endif |
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cell+ ; |
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: .name-without ( addr -- addr ) |
: .name-without ( addr -- addr ) |
\ prints a name without () e.g. (+LOOP) or (s") |
\ !! the stack effect cannot be correct |
dup 1 cells - @ look |
\ prints a name without a() e.g. a(+LOOP) or (s") |
IF name>string over c@ '( = IF 1 /string THEN |
dup 1 cells - @ threaded>name dup IF |
2dup + 1- c@ ') = IF 1- THEN .struc ELSE drop |
name>string over c@ 'a = IF |
THEN ; |
1 /string |
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THEN |
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over c@ '( = IF |
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1 /string |
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THEN |
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2dup + 1- c@ ') = IF 1- THEN .struc ELSE drop |
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THEN ; |
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[ifdef] (s") |
: c-c" |
: c-c" |
Display? IF nl .name-without THEN |
Display? IF nl .name-without THEN |
count 2dup + aligned -rot |
count 2dup + aligned -rot |
Line 257 VARIABLE C-Pass
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Line 352 VARIABLE C-Pass
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[char] " cemit bl cemit |
[char] " cemit bl cemit |
ELSE 2drop |
ELSE 2drop |
THEN ; |
THEN ; |
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[endif] |
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: c-string? ( addr1 -- addr2 f ) |
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\ f is true if a string was found and decompiled. |
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\ if f is false, addr2=addr1 |
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\ recognizes the following patterns: |
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\ c": ahead X: len string then lit X |
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\ s\": ahead X: string then lit X lit len |
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\ .\": ahead X: string then lit X lit len type |
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\ !! not recognized anywhere: |
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\ abort": if ahead X: len string then lit X c(abort") then |
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dup @ back? if false exit endif |
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dup @ >r |
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r@ @ decompile-prim ['] lit xt>threaded <> if rdrop false exit endif |
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r@ cell+ @ over cell+ <> if rdrop false exit endif |
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\ we have at least C" |
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r@ 2 cells + @ decompile-prim ['] lit xt>threaded = if |
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r@ 3 cells + @ over cell+ + aligned r@ = if |
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\ we have at least s" |
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r@ 4 cells + @ decompile-prim ['] lit-perform xt>threaded = |
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r@ 5 cells + @ ['] type >body = and if |
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6 s\" .\\\" " |
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else |
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4 s\" s\\\" " |
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endif |
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\ !! make newline if string too long? |
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display? if |
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0 .string r@ cell+ @ r@ 3 cells + @ c-\type '" cemit bl cemit |
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else |
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2drop |
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endif |
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nip cells r> + true exit |
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endif |
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endif |
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\ !! check if count matches space? |
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display? if |
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s\" c\" " 0 .string r@ cell+ @ count 0 .string '" cemit bl cemit |
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endif |
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drop r> 2 cells + true ; |
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: Forward? ( a-addr true | false -- a-addr true | false ) |
: Forward? ( a-addr true | false -- a-addr true | false ) |
\ a-addr1 is pointer into branch table |
\ a-addr is pointer into branch table |
\ returns true when jump is a forward jump |
\ returns true when jump is a forward jump |
IF dup dup @ swap 1 cells - @ - |
IF |
Ahead? IF true ELSE drop false THEN |
dup dup @ swap 1 cells - @ u> IF |
\ only if forward jump |
true |
ELSE false THEN ; |
ELSE |
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drop false |
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THEN |
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\ only if forward jump |
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ELSE |
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false |
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THEN ; |
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: RepeatCheck ( a-addr1 a-addr2 true | false -- false ) |
: RepeatCheck ( a-addr1 a-addr2 true | false -- false ) |
IF BEGIN 2dup |
IF BEGIN 2dup |
1 cells - @ swap dup @ + |
1 cells - @ swap @ |
u<= |
u<= |
WHILE drop dup cell+ |
WHILE drop dup cell+ |
MoreBranchAddr? 0= |
MoreBranchAddr? 0= |
Line 279 VARIABLE C-Pass
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Line 418 VARIABLE C-Pass
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ELSE false |
ELSE false |
THEN ; |
THEN ; |
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: c-branch |
: c-branch ( addr1 -- addr2 ) |
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c-string? ?exit |
Scan? |
Scan? |
IF dup @ Branch! |
IF dup @ Branch! |
dup @ back? |
dup @ back? |
Line 373 VARIABLE C-Pass
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Line 513 VARIABLE C-Pass
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: c-do |
: c-do |
Display? IF nl .name-without level+ THEN ; |
Display? IF nl .name-without level+ THEN ; |
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: c-?do |
: c-?do ( addr1 -- addr2 ) |
Display? IF nl S" ?DO" .struc level+ THEN |
Display? IF |
DebugBranch cell+ ; |
nl .name-without level+ |
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THEN |
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DebugBranch cell+ ; |
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: c-exit dup 1 cells - |
: c-exit dup 1 cells - |
CheckEnd |
CheckEnd |
Line 413 VARIABLE C-Pass
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Line 555 VARIABLE C-Pass
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CREATE C-Table |
CREATE C-Table |
' lit A, ' c-lit A, |
' lit A, ' c-lit A, |
' (s") A, ' c-c" A, |
' does-exec A, ' c-callxt A, |
' (.") A, ' c-c" A, |
' lit@ A, ' c-call A, |
' "lit A, ' c-c" A, |
[IFDEF] call ' call A, ' c-call A, [THEN] |
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\ ' useraddr A, .... |
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' lit-perform A, ' c-call A, |
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' lit+ A, ' c-lit+ A, |
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[IFDEF] (s") ' (s") A, ' c-c" A, [THEN] |
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[IFDEF] (.") ' (.") A, ' c-c" A, [THEN] |
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[IFDEF] "lit ' "lit A, ' c-c" A, [THEN] |
[IFDEF] (c") ' (c") A, ' c-c" A, [THEN] |
[IFDEF] (c") ' (c") A, ' c-c" A, [THEN] |
' (do) A, ' c-do A, |
' (do) A, ' c-do A, |
[IFDEF] (+do) ' (+do) A, ' c-do A, [THEN] |
[IFDEF] (+do) ' (+do) A, ' c-?do A, [THEN] |
[IFDEF] (u+do) ' (u+do) A, ' c-do A, [THEN] |
[IFDEF] (u+do) ' (u+do) A, ' c-?do A, [THEN] |
[IFDEF] (-do) ' (-do) A, ' c-do A, [THEN] |
[IFDEF] (-do) ' (-do) A, ' c-?do A, [THEN] |
[IFDEF] (u-do) ' (u-do) A, ' c-do A, [THEN] |
[IFDEF] (u-do) ' (u-do) A, ' c-?do A, [THEN] |
' (?do) A, ' c-?do A, |
' (?do) A, ' c-?do A, |
' (for) A, ' c-for A, |
' (for) A, ' c-for A, |
' ?branch A, ' c-?branch A, |
' ?branch A, ' c-?branch A, |
' branch A, ' c-branch A, |
' branch A, ' c-branch A, |
' (loop) A, ' c-loop A, |
' (loop) A, ' c-loop A, |
' (+loop) A, ' c-loop A, |
' (+loop) A, ' c-loop A, |
[IFDEF] (s+loop) ' (s+loop) A, ' c-loop A, [THEN] |
[IFDEF] (s+loop) ' (s+loop) A, ' c-loop A, [THEN] |
[IFDEF] (-loop) ' (-loop) A, ' c-loop A, [THEN] |
[IFDEF] (-loop) ' (-loop) A, ' c-loop A, [THEN] |
' (next) A, ' c-loop A, |
' (next) A, ' c-loop A, |
' ;s A, ' c-exit A, |
' ;s A, ' c-exit A, |
' (abort") A, ' c-abort" A, |
[IFDEF] (abort") ' (abort") A, ' c-abort" A, [THEN] |
\ only defined if compiler is loaded |
\ only defined if compiler is loaded |
[IFDEF] (compile) ' (compile) A, ' c-(compile) A, [THEN] |
[IFDEF] (compile) ' (compile) A, ' c-(compile) A, [THEN] |
[IFDEF] (does>) ' (does>) A, ' c-does> A, [THEN] |
[IFDEF] (does>) ' (does>) A, ' c-does> A, [THEN] |
Line 443 c-extender !
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Line 591 c-extender !
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\ DOTABLE 15may93jaw |
\ DOTABLE 15may93jaw |
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: DoTable ( cfa -- flag ) |
: DoTable ( ca/cfa -- flag ) |
C-Table |
decompile-prim C-Table BEGIN ( cfa table-entry ) |
BEGIN dup @ dup 0= |
dup @ dup 0= IF |
IF drop cell+ @ dup |
drop cell+ @ dup IF ( next table!) |
IF ( next table!) dup @ ELSE |
dup @ |
( end!) 2drop false EXIT THEN |
ELSE ( end!) |
THEN |
2drop false EXIT |
\ jump over to extender, if any 26jan97jaw |
THEN |
2 pick <> |
THEN |
WHILE 2 cells + |
\ jump over to extender, if any 26jan97jaw |
REPEAT |
xt>threaded 2 pick <> |
nip cell+ perform |
WHILE |
true |
2 cells + |
; |
REPEAT |
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nip cell+ perform |
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true |
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; |
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: BranchTo? ( a-addr -- a-addr ) |
: BranchTo? ( a-addr -- a-addr ) |
Display? IF dup BranchAddr? |
Display? IF dup BranchAddr? |
Line 476 c-extender !
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Line 627 c-extender !
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THEN ; |
THEN ; |
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: analyse ( a-addr1 -- a-addr2 ) |
: analyse ( a-addr1 -- a-addr2 ) |
Branches @ IF BranchTo? THEN |
Branches @ IF BranchTo? THEN |
dup cell+ swap @ |
dup cell+ swap @ |
dup >r DoTable r> swap IF drop EXIT THEN |
dup >r DoTable r> swap IF drop EXIT THEN |
Display? |
Display? |
IF look 0= IF drop dup 1 cells - @ . \ ABORT" SEE: Bua!" |
IF |
ELSE |
.word bl cemit |
dup cell+ count dup immediate-mask and |
ELSE |
IF bl cemit ." POSTPONE " THEN |
drop |
31 and rot wordinfo .string THEN bl cemit |
THEN ; |
ELSE drop |
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THEN ; |
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: c-init |
: c-init |
0 YPos ! 0 XPos ! |
0 YPos ! 0 XPos ! |
Line 514 Defer xt-see-xt ( xt -- )
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Line 663 Defer xt-see-xt ( xt -- )
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then |
then |
space ; |
space ; |
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Defer discode ( addr u -- ) |
Defer discode ( addr u -- ) \ gforth |
\ hook for the disassembler: disassemble code at addr of length u |
\G hook for the disassembler: disassemble code at addr of length u |
' dump IS discode |
' dump IS discode |
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: next-head ( addr1 -- addr2 ) \ gforth |
: next-head ( addr1 -- addr2 ) \ gforth |
\G find the next header starting after addr1, up to here (unreliable). |
\G find the next header starting after addr1, up to here (unreliable). |
here swap u+do |
here swap u+do |
i head? |
i head? -2 and if |
if |
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i unloop exit |
i unloop exit |
then |
then |
cell +loop |
cell +loop |
Line 535 Defer discode ( addr u -- )
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Line 683 Defer discode ( addr u -- )
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then |
then |
drop ; |
drop ; |
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: next-prim ( addr1 -- addr2 ) |
: next-prim ( addr1 -- addr2 ) \ gforth |
\G find the next primitive after addr1 |
\G find the next primitive after addr1 (unreliable) |
1+ >r -1 primstart |
1+ >r -1 primstart |
begin ( umin head R: boundary ) |
begin ( umin head R: boundary ) |
@ dup |
@ dup |
while |
while |
tuck name>int >code-address ( head1 umin c-addr ) |
tuck name>int >code-address ( head1 umin ca R: boundary ) |
r@ - umin |
r@ - umin |
swap |
swap |
repeat |
repeat |
drop r> + ; |
drop dup r@ negate u>= |
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\ "umin+boundary within [0,boundary)" = "umin within [-boundary,0)" |
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if ( umin R: boundary ) \ no primitive found behind -> use a default length |
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drop 31 |
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then |
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r> + ; |
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: seecode ( xt -- ) |
: seecode ( xt -- ) |
dup s" Code" .defname |
dup s" Code" .defname |
threading-method |
>code-address |
if |
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>code-address |
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then |
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dup in-dictionary? \ user-defined code word? |
dup in-dictionary? \ user-defined code word? |
if |
if |
dup next-head |
dup next-head |
Line 598 Defer discode ( addr u -- )
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Line 748 Defer discode ( addr u -- )
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dup >body ." 0 " ? ." 0 0 " |
dup >body ." 0 " ? ." 0 0 " |
s" Field" .defname cr ; |
s" Field" .defname cr ; |
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: xt-see ( xt -- ) |
: xt-see ( xt -- ) \ gforth |
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\G Decompile the definition represented by @i{xt}. |
cr c-init |
cr c-init |
dup >does-code |
dup >does-code |
if |
if |
Line 643 Defer discode ( addr u -- )
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Line 794 Defer discode ( addr u -- )
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if \ normal or immediate word |
if \ normal or immediate word |
swap xt-see (.immediate) |
swap xt-see (.immediate) |
else |
else |
r@ ['] compile-only-error = |
r@ ['] ticking-compile-only-error = |
if \ compile-only word |
if \ compile-only word |
swap xt-see (.immediate) ." compile-only" |
swap xt-see (.immediate) ." compile-only" |
else \ interpret/compile word |
else \ interpret/compile word |