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prims2x0.6.2.fs
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\ converts primitives to, e.g., C code
\ Copyright (C) 1995,1996,1997,1998,2000,2003,2008,2009,2013 Free Software Foundation, Inc.
\ This file is part of Gforth.
\ Gforth is free software; you can redistribute it and/or
\ modify it under the terms of the GNU General Public License
\ as published by the Free Software Foundation; either version 2
\ of the License, or (at your option) any later version.
\ This program is distributed in the hope that it will be useful,
\ but WITHOUT ANY WARRANTY; without even the implied warranty of
\ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
\ GNU General Public License for more details.
\ You should have received a copy of the GNU General Public License
\ along with this program. If not, see http://www.gnu.org/licenses/.
\ This is not very nice (hard limits, no checking, assumes 1 chars = 1).
\ And it grew even worse when it aged.
\ Optimizations:
\ superfluous stores are removed. GCC removes the superfluous loads by itself
\ TOS and FTOS can be kept in register( variable)s.
\
\ Problems:
\ The TOS optimization is somewhat hairy. The problems by example:
\ 1) dup ( w -- w w ): w=TOS; sp-=1; sp[1]=w; TOS=w;
\ The store is not superfluous although the earlier opt. would think so
\ Alternatively: sp[0]=TOS; w=TOS; sp-=1; TOS=w;
\ 2) ( -- .. ): sp[0] = TOS; ... /* This additional store is necessary */
\ 3) ( .. -- ): ... TOS = sp[0]; /* as well as this load */
\ 4) ( -- ): /* but here they are unnecessary */
\ 5) Words that call NEXT themselves have to be done very carefully.
\
\ To do:
\ add the store optimization for doubles
\ regarding problem 1 above: It would be better (for over) to implement
\ the alternative
\ store optimization for combined instructions.
\ Design Uglyness:
\ - global state (values, variables) in connection with combined instructions.
\ - index computation is different for instruction-stream and the
\ stacks; there are two mechanisms for dealing with that
\ (stack-in-index-xt and a test for stack==instruction-stream); there
\ should be only one.
\ for backwards compatibility, jaw
require compat/strcomp.fs
[undefined] endtry-iferror [if]
: endtry-iferror postpone recover ; immediate compile-only
[then]
warnings off
\ redefinitions of kernel words not present in gforth-0.6.1
: latestxt lastcfa @ ;
: latest last @ ;
[IFUNDEF] try
include startup.fs
[THEN]
: struct% struct ; \ struct is redefined in gray
warnings off
\ warnings on
include ./gray.fs
128 constant max-effect \ number of things on one side of a stack effect
9 constant max-stacks \ the max. number of stacks (including inst-stream).
255 constant maxchar
maxchar 1+ constant eof-char
#tab constant tab-char
#lf constant nl-char
variable rawinput \ pointer to next character to be scanned
variable endrawinput \ pointer to the end of the input (the char after the last)
variable cookedinput \ pointer to the next char to be parsed
variable line \ line number of char pointed to by input
variable line-start \ pointer to start of current line (for error messages)
0 line !
2variable filename \ filename of original input file
0 0 filename 2!
2variable out-filename \ filename of the output file (for sync lines)
0 0 out-filename 2!
2variable f-comment
0 0 f-comment 2!
variable skipsynclines \ are sync lines ("#line ...") invisible to the parser?
skipsynclines on
variable out-nls \ newlines in output (for output sync lines)
0 out-nls !
variable store-optimization \ use store optimization?
store-optimization off
variable include-skipped-insts
\ does the threaded code for a combined instruction include the cells
\ for the component instructions (true) or only the cells for the
\ inline arguments (false)
include-skipped-insts off
variable immarg \ values for immediate arguments (to be used in IMM_ARG macros)
$12340000 immarg !
: th ( addr1 n -- addr2 )
cells + ;
: holds ( addr u -- )
\ like HOLD, but for a string
tuck + swap 0 +do
1- dup c@ hold
loop
drop ;
: insert-wordlist { c-addr u wordlist xt -- }
\ adds name "addr u" to wordlist using defining word xt
\ xt may cause additional stack effects
get-current >r wordlist set-current
c-addr u nextname xt execute
r> set-current ;
: start ( -- addr )
cookedinput @ ;
: end ( addr -- addr u )
cookedinput @ over - ;
: print-error-line ( -- )
\ print the current line and position
line-start @ endrawinput @ over - 2dup nl-char scan drop nip ( start end )
over - type cr
line-start @ rawinput @ over - typewhite ." ^" cr ;
: ?print-error { f addr u -- }
f ?not? if
outfile-id >r try
stderr to outfile-id
filename 2@ type ." :" line @ 0 .r ." : " addr u type cr
print-error-line
0
endtry-iferror
then
r> to outfile-id throw
1 (bye) \ abort
endif ;
: quote ( -- )
[char] " emit ;
\ count output lines to generate sync lines for output
: count-nls ( addr u -- )
bounds u+do
i c@ nl-char = negate out-nls +!
loop ;
:noname ( addr u -- )
2dup count-nls
defers type ;
is type
variable output \ xt ( -- ) of output word for simple primitives
variable output-combined \ xt ( -- ) of output word for combined primitives
struct%
cell% field stack-number \ the number of this stack
cell% 2* field stack-pointer \ stackpointer name
cell% field stack-type \ name for default type of stack items
cell% field stack-in-index-xt \ ( in-size item -- in-index )
cell% field stack-access-transform \ ( nitem -- index )
end-struct stack%
struct%
cell% 2* field item-name \ name, excluding stack prefixes
cell% field item-stack \ descriptor for the stack used, 0 is default
cell% field item-type \ descriptor for the item type
cell% field item-offset \ offset in stack items, 0 for the deepest element
cell% field item-first \ true if this is the first occurence of the item
end-struct item%
struct%
cell% 2* field type-c-name
cell% field type-stack \ default stack
cell% field type-size \ size of type in stack items
cell% field type-fetch \ xt of fetch code generator ( item -- )
cell% field type-store \ xt of store code generator ( item -- )
end-struct type%
variable next-stack-number 0 next-stack-number !
create stacks max-stacks cells allot \ array of stacks
: stack-in-index ( in-size item -- in-index )
item-offset @ - 1- ;
: inst-in-index ( in-size item -- in-index )
nip dup item-offset @ swap item-type @ type-size @ + 1- ;
: make-stack ( addr-ptr u1 type "stack-name" -- )
next-stack-number @ max-stacks < s" too many stacks" ?print-error
create stack% %allot >r
r@ stacks next-stack-number @ th !
next-stack-number @ r@ stack-number !
1 next-stack-number +!
r@ stack-type !
save-mem r@ stack-pointer 2!
['] stack-in-index r@ stack-in-index-xt !
['] noop r@ stack-access-transform !
rdrop ;
: map-stacks { xt -- }
\ perform xt for all stacks
next-stack-number @ 0 +do
stacks i th @ xt execute
loop ;
: map-stacks1 { xt -- }
\ perform xt for all stacks except inst-stream
next-stack-number @ 1 +do
stacks i th @ xt execute
loop ;
\ stack items
: init-item ( addr u addr1 -- )
\ initialize item at addr1 with name addr u
\ !! remove stack prefix
dup item% %size erase
item-name 2! ;
: map-items { addr end xt -- }
\ perform xt for all items in array addr...end
end addr ?do
i xt execute
item% %size +loop ;
\ types
: print-type-prefix ( type -- )
body> >head name>string type ;
\ various variables for storing stuff of one primitive
struct%
cell% 2* field prim-name
cell% 2* field prim-wordset
cell% 2* field prim-c-name
cell% 2* field prim-doc
cell% 2* field prim-c-code
cell% 2* field prim-forth-code
cell% 2* field prim-stack-string
cell% field prim-num \ ordinal number
cell% field prim-items-wordlist \ unique items
item% max-effect * field prim-effect-in
item% max-effect * field prim-effect-out
cell% field prim-effect-in-end
cell% field prim-effect-out-end
cell% max-stacks * field prim-stacks-in \ number of in items per stack
cell% max-stacks * field prim-stacks-out \ number of out items per stack
end-struct prim%
: make-prim ( -- prim )
prim% %alloc { p }
s" " p prim-doc 2! s" " p prim-forth-code 2! s" " p prim-wordset 2!
p ;
0 value prim \ in combined prims either combined or a part
0 value combined \ in combined prims the combined prim
variable in-part \ true if processing a part
in-part off
: prim-context ( ... p xt -- ... )
\ execute xt with prim set to p
prim >r
swap to prim
catch
r> to prim
throw ;
1000 constant max-combined
create combined-prims max-combined cells allot
variable num-combined
variable part-num \ current part number during process-combined
: map-combined { xt -- }
\ perform xt for all components of the current combined instruction
num-combined @ 0 +do
combined-prims i th @ xt execute
loop ;
table constant combinations
\ the keys are the sequences of pointers to primitives
create current-depth max-stacks cells allot
create max-depth max-stacks cells allot
create min-depth max-stacks cells allot
create sp-update-in max-stacks cells allot
\ where max-depth occured the first time
create max-depths max-stacks max-combined 1+ * cells allot
\ maximum depth at start of each part: array[parts] of array[stack]
create max-back-depths max-stacks max-combined 1+ * cells allot
\ maximum depth from end of the combination to the start of the each part
create depths max-stacks max-combined 1+ * cells allot
\ depth at the start of each part: array[parts] of array[stack]
: s-c-max-depth ( nstack ncomponent -- addr )
max-stacks * + cells max-depths + ;
: s-c-max-back-depth ( nstack ncomponent -- addr )
max-stacks * + cells max-back-depths + ;
: s-c-depth ( nstack ncomponent -- addr )
max-stacks * + cells depths + ;
: print-depths1 { stack# xt -- }
num-combined @ 1+ 0 +do
stack# i xt execute @ 3 .r
loop ;
: print-depths { stack# -- }
\ for debugging
cr ." depths: " stack# ['] s-c-depth print-depths1
cr ." max-depths: " stack# ['] s-c-max-depth print-depths1
cr ." max-back-depths: " stack# ['] s-c-max-back-depth print-depths1 ;
: final-max-depth? { nstack ncomponent -- flag }
\ does the stack reach its final maxdepth before the component?
nstack ncomponent s-c-max-depth @
nstack num-combined @ s-c-max-depth @ = ;
wordlist constant primitives
: create-prim ( prim -- )
dup prim-name 2@ primitives ['] constant insert-wordlist ;
: stack-in ( stack -- addr )
\ address of number of stack items in effect in
stack-number @ cells prim prim-stacks-in + ;
: stack-out ( stack -- addr )
\ address of number of stack items in effect out
stack-number @ cells prim prim-stacks-out + ;
\ global vars
variable c-line
2variable c-filename
variable name-line
2variable name-filename
2variable last-name-filename
Variable function-number 0 function-number !
Variable function-old 0 function-old !
: function-diff ( n -- )
." GROUPADD(" function-number @ function-old @ - 0 .r ." )" cr
function-number @ function-old ! ;
: forth-fdiff ( -- )
function-number @ function-old @ - 0 .r ." groupadd" cr
function-number @ function-old ! ;
\ a few more set ops
: bit-equivalent ( w1 w2 -- w3 )
xor invert ;
: complement ( set1 -- set2 )
empty ['] bit-equivalent binary-set-operation ;
\ forward declaration for inst-stream (breaks cycle in definitions)
defer inst-stream-f ( -- stack )
\ stack access stuff
: normal-stack-access0 { n stack -- }
n stack stack-access-transform @ execute ." [" 0 .r ." ]" ;
: normal-stack-access1 { n stack -- }
stack stack-pointer 2@ type
n if
n stack normal-stack-access0
else
." TOS"
endif ;
: normal-stack-access ( n stack -- )
dup inst-stream-f = if
." IMM_ARG(" normal-stack-access1 ." ," immarg ? ." )"
1 immarg +!
else
normal-stack-access1
endif ;
: stack-depth { stack -- n }
current-depth stack stack-number @ th @ ;
: part-stack-access { n stack -- }
\ print _<stack><x>, x=inst-stream? n : maxdepth-currentdepth-n-1
." _" stack stack-pointer 2@ type
stack stack-number @ { stack# }
stack stack-depth n + { access-depth }
stack inst-stream-f = if
access-depth
else
combined prim-stacks-in stack# th @
assert( dup max-depth stack# th @ = )
access-depth - 1-
endif
0 .r ;
: part-stack-read { n stack -- }
stack stack-depth n + ( ndepth )
stack stack-number @ part-num @ s-c-max-depth @
\ max-depth stack stack-number @ th @ ( ndepth nmaxdepth )
over <= if ( ndepth ) \ load from memory
stack normal-stack-access
else
drop n stack part-stack-access
endif ;
: stack-diff ( stack -- n )
\ in-out
dup stack-in @ swap stack-out @ - ;
: part-stack-write { n stack -- }
stack stack-depth n +
stack stack-number @ part-num @ s-c-max-back-depth @
over <= if ( ndepth )
stack combined ['] stack-diff prim-context -
stack normal-stack-access
else
drop n stack part-stack-access
endif ;
: stack-read ( n stack -- )
\ print a stack access at index n of stack
in-part @ if
part-stack-read
else
normal-stack-access
endif ;
: stack-write ( n stack -- )
\ print a stack access at index n of stack
in-part @ if
part-stack-write
else
normal-stack-access
endif ;
: item-in-index { item -- n }
\ n is the index of item (in the in-effect)
item item-stack @ dup >r stack-in @ ( in-size r:stack )
item r> stack-in-index-xt @ execute ;
: item-stack-type-name ( item -- addr u )
item-stack @ stack-type @ type-c-name 2@ ;
: fetch-single ( item -- )
\ fetch a single stack item from its stack
>r
." vm_" r@ item-stack-type-name type
." 2" r@ item-type @ print-type-prefix ." ("
r@ item-in-index r@ item-stack @ stack-read ." ,"
r@ item-name 2@ type
." );" cr
rdrop ;
: fetch-double ( item -- )
\ fetch a double stack item from its stack
>r
." vm_two"
r@ item-stack-type-name type ." 2"
r@ item-type @ print-type-prefix ." ("
r@ item-in-index r@ item-stack @ 2dup ." (Cell)" stack-read
." , " -1 under+ ." (Cell)" stack-read
." , " r@ item-name 2@ type
." )" cr
rdrop ;
: same-as-in? ( item -- f )
\ f is true iff the offset and stack of item is the same as on input
>r
r@ item-first @ if
rdrop false exit
endif
r@ item-name 2@ prim prim-items-wordlist @ search-wordlist 0= abort" bug"
execute @
dup r@ =
if \ item first appeared in output
drop false
else
dup item-stack @ r@ item-stack @ =
swap item-offset @ r@ item-offset @ = and
endif
rdrop ;
: item-out-index ( item -- n )
\ n is the index of item (in the in-effect)
>r r@ item-stack @ stack-out @ r> item-offset @ - 1- ;
: really-store-single ( item -- )
>r
." vm_"
r@ item-type @ print-type-prefix ." 2"
r@ item-stack-type-name type ." ("
r@ item-name 2@ type ." ,"
r@ item-out-index r@ item-stack @ stack-write ." );"
rdrop ;
: store-single ( item -- )
>r
store-optimization @ in-part @ 0= and r@ same-as-in? and if
r@ item-in-index 0= r@ item-out-index 0= xor if
." IF_" r@ item-stack @ stack-pointer 2@ type
." TOS(" r@ really-store-single ." );" cr
endif
else
r@ really-store-single cr
endif
rdrop ;
: store-double ( item -- )
\ !! store optimization is not performed, because it is not yet needed
>r
." vm_"
r@ item-type @ print-type-prefix ." 2two"
r@ item-stack-type-name type ." ("
r@ item-name 2@ type ." , "
r@ item-out-index r@ item-stack @ 2dup stack-write
." , " -1 under+ stack-write
." )" cr
rdrop ;
: single ( -- xt1 xt2 n )
['] fetch-single ['] store-single 1 ;
: double ( -- xt1 xt2 n )
['] fetch-double ['] store-double 2 ;
: s, ( addr u -- )
\ allocate a string
here swap dup allot move ;
wordlist constant prefixes
: declare ( addr "name" -- )
\ remember that there is a stack item at addr called name
create , ;
: !default ( w addr -- )
dup @ if
2drop \ leave nonzero alone
else
!
endif ;
: create-type { addr u xt1 xt2 n stack -- } ( "prefix" -- )
\ describes a type
\ addr u specifies the C type name
\ stack effect entries of the type start with prefix
create type% %allot >r
addr u save-mem r@ type-c-name 2!
xt1 r@ type-fetch !
xt2 r@ type-store !
n r@ type-size !
stack r@ type-stack !
rdrop ;
: type-prefix ( addr u xt1 xt2 n stack "prefix" -- )
get-current >r prefixes set-current
create-type r> set-current
does> ( item -- )
\ initialize item
{ item typ }
typ item item-type !
typ type-stack @ item item-stack !default
item item-name 2@ prim prim-items-wordlist @ search-wordlist 0= if
item item-name 2@ nextname item declare
item item-first on
\ typ type-c-name 2@ type space type ." ;" cr
else
drop
item item-first off
endif ;
: execute-prefix ( item addr1 u1 -- )
\ execute the word ( item -- ) associated with the longest prefix
\ of addr1 u1
0 swap ?do
dup i prefixes search-wordlist
if \ ok, we have the type ( item addr1 xt )
nip execute
UNLOOP EXIT
endif
-1 s+loop
\ we did not find a type, abort
false s" unknown prefix" ?print-error ;
: declaration ( item -- )
dup item-name 2@ execute-prefix ;
: declaration-list ( addr1 addr2 -- )
['] declaration map-items ;
: declarations ( -- )
wordlist dup prim prim-items-wordlist ! set-current
prim prim-effect-in prim prim-effect-in-end @ declaration-list
prim prim-effect-out prim prim-effect-out-end @ declaration-list ;
: print-declaration { item -- }
item item-first @ if
item item-type @ type-c-name 2@ type space
item item-name 2@ type ." ;" cr
endif ;
: print-declarations ( -- )
prim prim-effect-in prim prim-effect-in-end @ ['] print-declaration map-items
prim prim-effect-out prim prim-effect-out-end @ ['] print-declaration map-items ;
: stack-prefix ( stack "prefix" -- )
get-current >r prefixes set-current
name tuck nextname create ( stack length ) 2,
r> set-current
does> ( item -- )
2@ { item stack prefix-length }
item item-name 2@ prefix-length /string item item-name 2!
stack item item-stack !
item declaration ;
\ types pointed to by stacks for use in combined prims
\ !! output-c-combined shouldn't use these names!
: stack-type-name ( addr u "name" -- )
single 0 create-type ;
wordlist constant type-names \ this is here just to meet the requirement
\ that a type be a word; it is never used for lookup
: stack ( "name" "stack-pointer" "type" -- )
\ define stack
name { d: stack-name }
name { d: stack-pointer }
name { d: stack-type }
get-current type-names set-current
stack-type 2dup nextname stack-type-name
set-current
stack-pointer latestxt >body stack-name nextname make-stack ;
stack inst-stream IP Cell
' inst-in-index inst-stream stack-in-index-xt !
' inst-stream <is> inst-stream-f
\ !! initialize stack-in and stack-out
\ offset computation
\ the leftmost (i.e. deepest) item has offset 0
\ the rightmost item has the highest offset
: compute-offset { item xt -- }
\ xt specifies in/out; update stack-in/out and set item-offset
item item-type @ type-size @
item item-stack @ xt execute dup @ >r +!
r> item item-offset ! ;
: compute-offset-in ( addr1 addr2 -- )
['] stack-in compute-offset ;
: compute-offset-out ( addr1 addr2 -- )
['] stack-out compute-offset ;
: compute-offsets ( -- )
prim prim-stacks-in max-stacks cells erase
prim prim-stacks-out max-stacks cells erase
prim prim-effect-in prim prim-effect-in-end @ ['] compute-offset-in map-items
prim prim-effect-out prim prim-effect-out-end @ ['] compute-offset-out map-items
inst-stream stack-out @ 0= s" # can only be on the input side" ?print-error ;
: process-simple ( -- )
prim prim { W^ key } key cell
combinations ['] constant insert-wordlist
declarations compute-offsets
output @ execute ;
: flush-a-tos { stack -- }
stack stack-out @ 0<> stack stack-in @ 0= and
if
." IF_" stack stack-pointer 2@ 2dup type ." TOS("
2dup type 0 stack normal-stack-access0 ." = " type ." TOS);" cr
endif ;
: flush-tos ( -- )
['] flush-a-tos map-stacks1 ;
: ?really-fill-a-tos { f stack -- }
f if
." IF_" stack stack-pointer 2@ 2dup type ." TOS("
2dup type ." TOS = " type 0 stack normal-stack-access0 ." );" cr
endif ;
: fill-a-tos { stack -- }
stack stack-out @ 0= stack stack-in @ 0<> and stack ?really-fill-a-tos ;
: fill-tos ( -- )
\ !! inst-stream for prefetching?
['] fill-a-tos map-stacks1 ;
: fetch ( addr -- )
dup item-type @ type-fetch @ execute ;
: fetches ( -- )
prim prim-effect-in prim prim-effect-in-end @ ['] fetch map-items ;
: stack-update-transform ( n1 stack -- n2 )
\ n2 is the number by which the stack pointer should be
\ incremented to pop n1 items
stack-access-transform @ dup >r execute
0 r> execute - ;
: n-stack-pointer-update { n stack -- }
\ stack pointer update by n
n if \ this check is not necessary, gcc would do this for us
stack inst-stream = if
." INC_IP(" n 0 .r ." );" cr
else
stack stack-pointer 2@ type ." += "
n stack stack-update-transform 0 .r ." ;" cr
endif
endif ;
: stack-pointer-update { stack -- }
\ stacks grow downwards
stack stack-diff stack n-stack-pointer-update ;
: stack-pointer-updates ( -- )
['] stack-pointer-update map-stacks ;
: store ( item -- )
\ f is true if the item should be stored
\ f is false if the store is probably not necessary
dup item-type @ type-store @ execute ;
: stores ( -- )
prim prim-effect-out prim prim-effect-out-end @ ['] store map-items ;
: print-debug-arg { item -- }
." fputs(" quote space item item-name 2@ type ." =" quote ." , vm_out); "
." printarg_" item item-type @ print-type-prefix
." (" item item-name 2@ type ." );" cr ;
: print-debug-args ( -- )
." #ifdef VM_DEBUG" cr
." if (vm_debug) {" cr
prim prim-effect-in prim prim-effect-in-end @ ['] print-debug-arg map-items
\ ." fputc('\n', vm_out);" cr
." }" cr
." #endif" cr ;
: print-debug-result { item -- }
item item-first @ if
item print-debug-arg
endif ;
: print-debug-results ( -- )
cr
." #ifdef VM_DEBUG" cr
." if (vm_debug) {" cr
." fputs(" quote ." -- " quote ." , vm_out); "
prim prim-effect-out prim prim-effect-out-end @ ['] print-debug-result map-items
." fputc('\n', vm_out);" cr
." }" cr
." #endif" cr ;
: output-super-end ( -- )
prim prim-c-code 2@ s" SET_IP" search if
." SUPER_END;" cr
endif
2drop ;
: output-nextp2 ( -- )
." NEXT_P2;" cr ;
variable tail-nextp2 \ xt to execute for printing NEXT_P2 in INST_TAIL
' output-nextp2 tail-nextp2 !
: output-label2 ( -- )
." LABEL2(" prim prim-c-name 2@ type ." )" cr
." NEXT_P2;" cr ;
: output-c-tail1 { xt -- }
\ the final part of the generated C code, with xt printing LABEL2 or not.
output-super-end
print-debug-results
." NEXT_P1;" cr
stores
fill-tos
xt execute ;
: output-c-tail1-no-stores { xt -- }
\ the final part of the generated C code for combinations
output-super-end
." NEXT_P1;" cr
fill-tos
xt execute ;
: output-c-tail ( -- )
tail-nextp2 @ output-c-tail1 ;
: output-c-tail2 ( -- )
['] output-label2 output-c-tail1 ;
: output-c-tail2-no-stores ( -- )
['] output-label2 output-c-tail1-no-stores ;
: type-c-code ( c-addr u xt -- )
\ like TYPE, but replaces "INST_TAIL;" with tail code produced by xt
{ xt }
." {" cr
." #line " c-line @ . quote c-filename 2@ type quote cr
begin ( c-addr1 u1 )
2dup s" INST_TAIL;" search
while ( c-addr1 u1 c-addr3 u3 )
2dup 2>r drop nip over - type
xt execute
2r> 10 /string
\ !! resync #line missing
repeat
2drop type
." #line " out-nls @ 2 + . quote out-filename 2@ type quote cr
." }" cr ;
: print-entry ( -- )
." LABEL(" prim prim-c-name 2@ type ." )" ;
: output-c ( -- )
print-entry ." /* " prim prim-name 2@ type ." ( " prim prim-stack-string 2@ type ." ) */" cr
." /* " prim prim-doc 2@ type ." */" cr
." NAME(" quote prim prim-name 2@ type quote ." )" cr \ debugging
." {" cr
." DEF_CA" cr
print-declarations
." NEXT_P0;" cr
flush-tos
fetches
print-debug-args
stack-pointer-updates
prim prim-c-code 2@ ['] output-c-tail type-c-code
output-c-tail2
." }" cr
cr
;
: disasm-arg { item -- }
item item-stack @ inst-stream = if
." {" cr
item print-declaration
item fetch
item print-debug-arg
." }" cr
endif ;
: disasm-args ( -- )
prim prim-effect-in prim prim-effect-in-end @ ['] disasm-arg map-items ;
: output-disasm ( -- )
\ generate code for disassembling VM instructions
." if (VM_IS_INST(*ip, " function-number @ 0 .r ." )) {" cr
." fputs(" quote prim prim-name 2@ type quote ." , vm_out);" cr
disasm-args
." ip += " inst-stream stack-in @ 1+ 0 .r ." ;" cr
." goto _endif_;" cr
." }" cr ;
: output-profile ( -- )
\ generate code for postprocessing the VM block profile stuff
." if (VM_IS_INST(*ip, " function-number @ 0 .r ." )) {" cr
." add_inst(b, " quote prim prim-name 2@ type quote ." );" cr
." ip += " inst-stream stack-in @ 1+ 0 .r ." ;" cr
prim prim-c-code 2@ s" SET_IP" search nip nip
prim prim-c-code 2@ s" SUPER_END" search nip nip or if
." return;" cr
else
." goto _endif_;" cr
endif
." }" cr ;
: output-profile-part ( p )
." add_inst(b, " quote
prim-name 2@ type
quote ." );" cr ;
: output-profile-combined ( -- )
\ generate code for postprocessing the VM block profile stuff
." if (VM_IS_INST(*ip, " function-number @ 0 .r ." )) {" cr
['] output-profile-part map-combined
." ip += " inst-stream stack-in @ 1+ 0 .r ." ;" cr
combined-prims num-combined @ 1- th @ prim-c-code 2@ s" SET_IP" search nip nip
combined-prims num-combined @ 1- th @ prim-c-code 2@ s" SUPER_END" search nip nip or if
." return;" cr
else
." goto _endif_;" cr
endif
." }" cr ;
: output-superend ( -- )
\ output flag specifying whether the current word ends a dynamic superinst
prim prim-c-code 2@ s" SET_IP" search nip nip
prim prim-c-code 2@ s" SUPER_END" search nip nip or 0<>
prim prim-c-code 2@ s" SUPER_CONTINUE" search nip nip 0= and
negate 0 .r ." , /* " prim prim-name 2@ type ." */" cr ;
: gen-arg-parm { item -- }
item item-stack @ inst-stream = if
." , " item item-type @ type-c-name 2@ type space
item item-name 2@ type
endif ;
: gen-args-parm ( -- )
prim prim-effect-in prim prim-effect-in-end @ ['] gen-arg-parm map-items ;
: gen-arg-gen { item -- }
item item-stack @ inst-stream = if
." genarg_" item item-type @ print-type-prefix
." (ctp, " item item-name 2@ type ." );" cr
endif ;
: gen-args-gen ( -- )
prim prim-effect-in prim prim-effect-in-end @ ['] gen-arg-gen map-items ;
: output-gen ( -- )
\ generate C code for generating VM instructions
." void gen_" prim prim-c-name 2@ type ." (Inst **ctp" gen-args-parm ." )" cr
." {" cr
." gen_inst(ctp, vm_prim[" function-number @ 0 .r ." ]);" cr
gen-args-gen
." }" cr ;
: stack-used? { stack -- f }
stack stack-in @ stack stack-out @ or 0<> ;
: output-funclabel ( -- )
." &I_" prim prim-c-name 2@ type ." ," cr ;
: output-forthname ( -- )
'" emit prim prim-name 2@ type '" emit ." ," cr ;
\ : output-c-func ( -- )
\ \ used for word libraries
\ ." Cell * I_" prim prim-c-name 2@ type ." (Cell *SP, Cell **FP) /* " prim prim-name 2@ type
\ ." ( " prim prim-stack-string 2@ type ." ) */" cr
\ ." /* " prim prim-doc 2@ type ." */" cr
\ ." NAME(" quote prim prim-name 2@ type quote ." )" cr
\ \ debugging
\ ." {" cr
\ print-declarations
\ \ !! don't know what to do about that
\ inst-stream stack-used? IF ." Cell *ip=IP;" cr THEN
\ data-stack stack-used? IF ." Cell *sp=SP;" cr THEN
\ fp-stack stack-used? IF ." Cell *fp=*FP;" cr THEN
\ return-stack stack-used? IF ." Cell *rp=*RP;" cr THEN
\ flush-tos
\ fetches
\ stack-pointer-updates
\ fp-stack stack-used? IF ." *FP=fp;" cr THEN
\ ." {" cr
\ ." #line " c-line @ . quote c-filename 2@ type quote cr
\ prim prim-c-code 2@ type
\ ." }" cr
\ stores
\ fill-tos
\ ." return (sp);" cr
\ ." }" cr
\ cr ;
: output-label ( -- )
." INST_ADDR(" prim prim-c-name 2@ type ." )," cr ;
: output-alias ( -- )
( primitive-number @ . ." alias " ) ." Primitive " prim prim-name 2@ type cr ;
: output-c-prim-num ( -- )
." N_" prim prim-c-name 2@ type ." ," cr ;
: output-forth ( -- )
prim prim-forth-code @ 0=
IF \ output-alias
\ this is bad for ec: an alias is compiled if tho word does not exist!
\ JAW
ELSE ." : " prim prim-name 2@ type ." ( "
prim prim-stack-string 2@ type ." )" cr
prim prim-forth-code 2@ type cr
THEN ;
: output-tag-file ( -- )
name-filename 2@ last-name-filename 2@ compare if
name-filename 2@ last-name-filename 2!
#ff emit cr
name-filename 2@ type
." ,0" cr