1 ! Copyright (C) 2008, 2009 Slava Pestov.
2 ! See http://factorcode.org/license.txt for BSD license.
3 USING: namespaces make math math.order math.parser sequences accessors
4 kernel kernel.private layouts assocs words summary arrays
5 combinators classes.algebra alien alien.c-types alien.structs
6 alien.strings alien.arrays alien.complex alien.libraries sets libc
7 continuations.private fry cpu.architecture classes locals
8 source-files.errors slots parser generic.parser
13 compiler.cfg.instructions
14 compiler.cfg.stack-frame
15 compiler.cfg.registers
17 compiler.codegen.fixup
23 H{ } clone insn-counts set-global
25 GENERIC: generate-insn ( insn -- )
27 TUPLE: asm label code calls ;
31 : add-call ( word -- )
32 #! Compile this word later.
35 SYMBOL: compiling-word
37 : compiled-stack-traces? ( -- ? ) 67 getenv ;
39 ! Mapping _label IDs to label instances
42 : init-generator ( word -- )
46 compiled-stack-traces? [ compiling-word get add-literal ] when ;
48 : generate-insns ( asm -- code )
50 [ word>> init-generator ]
54 [ class insn-counts get inc-at ]
61 : generate ( mr -- asm )
63 [ label>> ] [ generate-insns ] bi calls get
67 : lookup-label ( id -- label )
68 labels get [ drop <label> ] cache ;
71 M: ##no-tco generate-insn drop ;
73 M: ##call generate-insn
74 word>> dup sub-primitive>>
75 [ first % ] [ [ add-call ] [ %call ] bi ] ?if ;
77 M: ##jump generate-insn word>> [ add-call ] [ %jump ] bi ;
79 M: _dispatch-label generate-insn
82 rc-absolute-cell label-fixup ;
84 M: _prologue generate-insn
85 stack-frame>> [ stack-frame set ] [ total-size>> %prologue ] bi ;
87 M: _epilogue generate-insn
88 stack-frame>> total-size>> %epilogue ;
90 M: _spill-area-size generate-insn drop ;
92 ! Some meta-programming to generate simple code generators, where
93 ! the instruction is unpacked and then a %word is called
96 : insn-slot-quot ( spec -- quot )
97 name>> [ reader-word ] [ "label" = ] bi
98 [ \ lookup-label [ ] 2sequence ] [ [ ] 1sequence ] if ;
100 : codegen-method-body ( class word -- quot )
102 "insn-slots" word-prop
103 [ insn-slot-quot ] map
105 '[ _ cleave _ execute ] ;
108 scan-word [ \ generate-insn create-method-in ] keep scan-word
109 codegen-method-body define ;
112 CODEGEN: ##load-immediate %load-immediate
113 CODEGEN: ##load-reference %load-reference
114 CODEGEN: ##peek %peek
115 CODEGEN: ##replace %replace
116 CODEGEN: ##inc-d %inc-d
117 CODEGEN: ##inc-r %inc-r
118 CODEGEN: ##return %return
119 CODEGEN: ##slot %slot
120 CODEGEN: ##slot-imm %slot-imm
121 CODEGEN: ##set-slot %set-slot
122 CODEGEN: ##set-slot-imm %set-slot-imm
123 CODEGEN: ##string-nth %string-nth
124 CODEGEN: ##set-string-nth-fast %set-string-nth-fast
126 CODEGEN: ##add-imm %add-imm
128 CODEGEN: ##sub-imm %sub-imm
130 CODEGEN: ##mul-imm %mul-imm
132 CODEGEN: ##and-imm %and-imm
134 CODEGEN: ##or-imm %or-imm
136 CODEGEN: ##xor-imm %xor-imm
138 CODEGEN: ##shl-imm %shl-imm
140 CODEGEN: ##shr-imm %shr-imm
142 CODEGEN: ##sar-imm %sar-imm
146 CODEGEN: ##log2 %log2
147 CODEGEN: ##copy %copy
148 CODEGEN: ##integer>bignum %integer>bignum
149 CODEGEN: ##bignum>integer %bignum>integer
150 CODEGEN: ##unbox-float %unbox-float
151 CODEGEN: ##box-float %box-float
152 CODEGEN: ##add-float %add-float
153 CODEGEN: ##sub-float %sub-float
154 CODEGEN: ##mul-float %mul-float
155 CODEGEN: ##div-float %div-float
156 CODEGEN: ##min-float %min-float
157 CODEGEN: ##max-float %max-float
158 CODEGEN: ##sqrt %sqrt
159 CODEGEN: ##unary-float-function %unary-float-function
160 CODEGEN: ##binary-float-function %binary-float-function
161 CODEGEN: ##single>double-float %single>double-float
162 CODEGEN: ##double>single-float %double>single-float
163 CODEGEN: ##integer>float %integer>float
164 CODEGEN: ##float>integer %float>integer
165 CODEGEN: ##unbox-vector %unbox-vector
166 CODEGEN: ##broadcast-vector %broadcast-vector
167 CODEGEN: ##gather-vector-2 %gather-vector-2
168 CODEGEN: ##gather-vector-4 %gather-vector-4
169 CODEGEN: ##box-vector %box-vector
170 CODEGEN: ##add-vector %add-vector
171 CODEGEN: ##sub-vector %sub-vector
172 CODEGEN: ##mul-vector %mul-vector
173 CODEGEN: ##div-vector %div-vector
174 CODEGEN: ##min-vector %min-vector
175 CODEGEN: ##max-vector %max-vector
176 CODEGEN: ##sqrt-vector %sqrt-vector
177 CODEGEN: ##horizontal-add-vector %horizontal-add-vector
178 CODEGEN: ##box-alien %box-alien
179 CODEGEN: ##box-displaced-alien %box-displaced-alien
180 CODEGEN: ##unbox-alien %unbox-alien
181 CODEGEN: ##unbox-any-c-ptr %unbox-any-c-ptr
182 CODEGEN: ##alien-unsigned-1 %alien-unsigned-1
183 CODEGEN: ##alien-unsigned-2 %alien-unsigned-2
184 CODEGEN: ##alien-unsigned-4 %alien-unsigned-4
185 CODEGEN: ##alien-signed-1 %alien-signed-1
186 CODEGEN: ##alien-signed-2 %alien-signed-2
187 CODEGEN: ##alien-signed-4 %alien-signed-4
188 CODEGEN: ##alien-cell %alien-cell
189 CODEGEN: ##alien-float %alien-float
190 CODEGEN: ##alien-double %alien-double
191 CODEGEN: ##alien-vector %alien-vector
192 CODEGEN: ##set-alien-integer-1 %set-alien-integer-1
193 CODEGEN: ##set-alien-integer-2 %set-alien-integer-2
194 CODEGEN: ##set-alien-integer-4 %set-alien-integer-4
195 CODEGEN: ##set-alien-cell %set-alien-cell
196 CODEGEN: ##set-alien-float %set-alien-float
197 CODEGEN: ##set-alien-double %set-alien-double
198 CODEGEN: ##set-alien-vector %set-alien-vector
199 CODEGEN: ##allot %allot
200 CODEGEN: ##write-barrier %write-barrier
201 CODEGEN: ##compare %compare
202 CODEGEN: ##compare-imm %compare-imm
203 CODEGEN: ##compare-float %compare-float
205 CODEGEN: _fixnum-add %fixnum-add
206 CODEGEN: _fixnum-sub %fixnum-sub
207 CODEGEN: _fixnum-mul %fixnum-mul
208 CODEGEN: _label resolve-label
209 CODEGEN: _branch %jump-label
210 CODEGEN: _compare-branch %compare-branch
211 CODEGEN: _compare-imm-branch %compare-imm-branch
212 CODEGEN: _compare-float-branch %compare-float-branch
213 CODEGEN: _dispatch %dispatch
214 CODEGEN: _spill %spill
215 CODEGEN: _reload %reload
218 : wipe-locs ( locs temp -- )
221 [ 0 %load-immediate ]
222 [ swap [ %replace ] with each ] bi
225 GENERIC# save-gc-root 1 ( gc-root operand temp -- )
227 M:: spill-slot save-gc-root ( gc-root operand temp -- )
228 temp int-rep operand n>> %reload
229 gc-root temp %save-gc-root ;
231 M: object save-gc-root drop %save-gc-root ;
233 : save-gc-roots ( gc-roots temp -- ) '[ _ save-gc-root ] assoc-each ;
235 : save-data-regs ( data-regs -- ) [ first3 %spill ] each ;
237 GENERIC# load-gc-root 1 ( gc-root operand temp -- )
239 M:: spill-slot load-gc-root ( gc-root operand temp -- )
240 gc-root temp %load-gc-root
241 temp int-rep operand n>> %spill ;
243 M: object load-gc-root drop %load-gc-root ;
245 : load-gc-roots ( gc-roots temp -- ) '[ _ load-gc-root ] assoc-each ;
247 : load-data-regs ( data-regs -- ) [ first3 %reload ] each ;
252 [ [ "no-gc" get ] dip [ temp1>> ] [ temp2>> ] bi %check-nursery ]
253 [ [ uninitialized-locs>> ] [ temp1>> ] bi wipe-locs ]
254 [ data-values>> save-data-regs ]
255 [ [ tagged-values>> ] [ temp1>> ] bi save-gc-roots ]
256 [ tagged-values>> length %call-gc ]
257 [ [ tagged-values>> ] [ temp1>> ] bi load-gc-roots ]
258 [ data-values>> load-data-regs ]
260 "no-gc" resolve-label ;
262 M: _loop-entry generate-insn drop %loop-entry ;
264 M: ##alien-global generate-insn
265 [ dst>> ] [ symbol>> ] [ library>> ] tri
269 GENERIC: next-fastcall-param ( rep -- )
271 : ?dummy-stack-params ( rep -- )
272 dummy-stack-params? [ rep-size cell align stack-params +@ ] [ drop ] if ;
274 : ?dummy-int-params ( rep -- )
275 dummy-int-params? [ rep-size cell /i 1 max int-regs +@ ] [ drop ] if ;
277 : ?dummy-fp-params ( rep -- )
278 drop dummy-fp-params? [ float-regs inc ] when ;
280 M: int-rep next-fastcall-param
281 int-regs inc [ ?dummy-stack-params ] [ ?dummy-fp-params ] bi ;
283 M: float-rep next-fastcall-param
284 float-regs inc [ ?dummy-stack-params ] [ ?dummy-int-params ] bi ;
286 M: double-rep next-fastcall-param
287 float-regs inc [ ?dummy-stack-params ] [ ?dummy-int-params ] bi ;
289 GENERIC: reg-class-full? ( reg-class -- ? )
291 M: stack-params reg-class-full? drop t ;
293 M: reg-class reg-class-full?
294 [ get ] [ param-regs length ] bi >= ;
296 : alloc-stack-param ( rep -- n reg-class rep )
298 [ rep-size cell align stack-params +@ ] dip
301 : alloc-fastcall-param ( rep -- n reg-class rep )
302 [ [ reg-class-of get ] [ reg-class-of ] [ next-fastcall-param ] tri ] keep ;
304 : alloc-parameter ( parameter -- reg rep )
305 c-type-rep dup reg-class-of reg-class-full?
306 [ alloc-stack-param ] [ alloc-fastcall-param ] if
309 : (flatten-int-type) ( size -- seq )
310 cell /i "void*" c-type <repetition> ;
312 GENERIC: flatten-value-type ( type -- types )
314 M: object flatten-value-type 1array ;
316 M: struct-type flatten-value-type ( type -- types )
317 stack-size cell align (flatten-int-type) ;
319 M: long-long-type flatten-value-type ( type -- types )
320 stack-size cell align (flatten-int-type) ;
322 : flatten-value-types ( params -- params )
323 #! Convert value type structs to consecutive void*s.
327 [ parameter-align (flatten-int-type) % ] keep
328 [ stack-size cell align + ] keep
333 : each-parameter ( parameters quot -- )
334 [ [ parameter-sizes nip ] keep ] dip 2each ; inline
336 : reverse-each-parameter ( parameters quot -- )
337 [ [ parameter-sizes nip ] keep ] dip 2reverse-each ; inline
339 : reset-fastcall-counts ( -- )
340 { int-regs float-regs stack-params } [ 0 swap set ] each ;
342 : with-param-regs ( quot -- )
343 #! In quot you can call alloc-parameter
344 [ reset-fastcall-counts call ] with-scope ; inline
346 : move-parameters ( node word -- )
347 #! Moves values from C stack to registers (if word is
348 #! %load-param-reg) and registers to C stack (if word is
350 [ alien-parameters flatten-value-types ]
351 [ '[ alloc-parameter _ execute ] ]
352 bi* each-parameter ; inline
354 : unbox-parameters ( offset node -- )
356 %prepare-unbox [ over + ] dip unbox-parameter
357 ] reverse-each-parameter drop ;
359 : prepare-box-struct ( node -- offset )
360 #! Return offset on C stack where to store unboxed
361 #! parameters. If the C function is returning a structure,
362 #! the first parameter is an implicit target area pointer,
363 #! so we need to use a different offset.
364 return>> large-struct?
365 [ %prepare-box-struct cell ] [ 0 ] if ;
367 : objects>registers ( params -- )
368 #! Generate code for unboxing a list of C types, then
369 #! generate code for moving these parameters to registers on
370 #! architectures where parameters are passed in registers.
372 [ prepare-box-struct ] keep
373 [ unbox-parameters ] keep
374 \ %load-param-reg move-parameters
377 : box-return* ( node -- )
378 return>> [ ] [ box-return ] if-void ;
380 : check-dlsym ( symbols dll -- )
382 dupd '[ _ dlsym ] any?
383 [ drop ] [ compiling-word get no-such-symbol ] if
385 dll-path compiling-word get no-such-library drop
388 : stdcall-mangle ( symbol params -- symbol )
389 parameters>> parameter-sizes drop number>string "@" glue ;
391 : alien-invoke-dlsym ( params -- symbols dll )
392 [ [ function>> dup ] keep stdcall-mangle 2array ]
393 [ library>> library dup [ dll>> ] when ]
394 bi 2dup check-dlsym ;
396 M: ##alien-invoke generate-insn
398 ! Save registers for GC
399 %prepare-alien-invoke
401 dup objects>registers
404 dup alien-invoke-dlsym %alien-invoke
410 M: ##alien-indirect generate-insn
412 ! Save registers for GC
413 %prepare-alien-invoke
414 ! Save alien at top of stack to temporary storage
415 %prepare-alien-indirect
417 dup objects>registers
419 ! Call alien in temporary storage
426 : box-parameters ( params -- )
427 alien-parameters [ box-parameter ] each-parameter ;
429 : registers>objects ( node -- )
430 ! Generate code for boxing input parameters in a callback.
432 dup \ %save-param-reg move-parameters
433 "nest_stacks" f %alien-invoke
437 TUPLE: callback-context ;
439 : current-callback ( -- id ) 2 getenv ;
441 : wait-to-return ( token -- )
442 dup current-callback eq? [
445 yield-hook get call( -- ) wait-to-return
448 : do-callback ( quot token -- )
450 [ 2 setenv call ] keep
451 wait-to-return ; inline
453 : callback-return-quot ( ctype -- quot )
455 { [ dup "void" = ] [ drop [ ] ] }
456 { [ dup large-struct? ] [ heap-size '[ _ memcpy ] ] }
457 [ c-type c-type-unboxer-quot ]
460 : callback-prep-quot ( params -- quot )
461 parameters>> [ c-type c-type-boxer-quot ] map spread>quot ;
463 : wrap-callback-quot ( params -- quot )
465 [ callback-prep-quot ]
467 [ callback-return-quot ] tri 3append ,
468 [ callback-context new do-callback ] %
471 : %unnest-stacks ( -- ) "unnest_stacks" f %alien-invoke ;
473 M: ##callback-return generate-insn
474 #! All the extra book-keeping for %unwind is only for x86.
475 #! On other platforms its an alias for %return.
476 params>> %callback-return ;
478 M: ##alien-callback generate-insn
480 [ registers>objects ]
481 [ wrap-callback-quot %alien-callback ]
482 [ alien-return [ %unnest-stacks ] [ %callback-value ] if-void ]