185 lines
4.7 KiB
Factor
185 lines
4.7 KiB
Factor
! :folding=indent:collapseFolds=1:
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! $Id$
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!
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! Copyright (C) 2004 Slava Pestov.
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!
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! Redistribution and use in source and binary forms, with or without
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! modification, are permitted provided that the following conditions are met:
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!
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! 1. Redistributions of source code must retain the above copyright notice,
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! this list of conditions and the following disclaimer.
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!
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! 2. Redistributions in binary form must reproduce the above copyright notice,
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! this list of conditions and the following disclaimer in the documentation
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! and/or other materials provided with the distribution.
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!
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! THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
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! INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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! FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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! DEVELOPERS AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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! SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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! PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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! OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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! WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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! OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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! ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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IN: compiler
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USE: alien
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USE: inference
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USE: errors
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USE: kernel
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USE: lists
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USE: math
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USE: namespaces
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USE: strings
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USE: words
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USE: vectors
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: DS ( -- address ) "ds" dlsym-self ;
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: PUSH-DS ( -- )
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#! Push contents of EAX onto datastack.
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DS ECX [I]>R
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4 ECX R+I
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EAX ECX R>[R]
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ECX DS R>[I] ;
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: POP-DS ( -- )
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#! Pop datastack to EAX.
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DS ECX [I]>R
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ECX EAX [R]>R
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4 ECX R-I
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ECX DS R>[I] ;
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: PEEK-DS ( -- )
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#! Peek datastack to EAX.
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DS ECX [I]>R
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ECX EAX [R]>R ;
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: PEEK-2-DS ( -- )
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#! Peek second value on datastack to EAX.
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DS ECX [I]>R
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4 ECX R-I
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ECX EAX [R]>R ;
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: SELF-CALL ( name -- )
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#! Call named C function in Factor interpreter executable.
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dlsym-self CALL JUMP-FIXUP ;
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#push-immediate [
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DS ECX [I]>R
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4 ECX R+I
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address ECX I>[R]
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ECX DS R>[I]
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] "generator" set-word-property
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#push-indirect [
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DS ECX [I]>R
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4 ECX R+I
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intern-literal EAX [I]>R
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EAX ECX R>[R]
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ECX DS R>[I]
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] "generator" set-word-property
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#call [
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dup postpone-word
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CALL compiled-offset defer-xt
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] "generator" set-word-property
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#call-label [
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CALL compiled-offset defer-xt
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] "generator" set-word-property
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#jump-label [
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JUMP compiled-offset defer-xt
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] "generator" set-word-property
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#jump-label-t [
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POP-DS
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! condition is now in EAX
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f address EAX CMP-I-R
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! jump w/ address added later
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JNE compiled-offset defer-xt
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] "generator" set-word-property
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#return-to [
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PUSH-I/PARTIAL 0 defer-xt
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] "generator" set-word-property
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#return [ drop RET ] "generator" set-word-property
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[
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[ #drop drop ]
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[ #dup dup ]
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[ #swap swap ]
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[ #over over ]
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[ #pick pick ]
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[ #>r >r ]
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[ #r> r> ]
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] [
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uncons [
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car CALL compiled-offset defer-xt drop
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] cons "generator" set-word-property
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] each
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: begin-jump-table ( -- )
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#! Compile a piece of code that jumps to an offset in a
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#! jump table indexed by the type of the Factor object in
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#! EAX.
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#! The jump table must immediately follow this macro.
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2 EAX R<<I ( -- fixup )
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EAX+/PARTIAL
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EAX JUMP-[R]
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cell compile-aligned
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compiled-offset swap set-compiled-cell ( fixup -- ) ;
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: jump-table-entry ( word -- )
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#! Jump table entries are absolute addresses.
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( dup postpone-word )
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compiled-offset 0 compile-cell 0 defer-xt ;
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: check-jump-table ( vtable -- )
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length num-types = [
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"Jump table must have " num-types " entries" cat3 throw
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] unless ;
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: compile-jump-table ( vtable -- )
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#! Compile a table of words as a word-array of XTs.
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begin-jump-table
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dup check-jump-table
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[ jump-table-entry ] each ;
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: TYPE ( -- )
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#! Peek datastack, store type # in EAX.
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PEEK-DS
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EAX PUSH-R
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"type_of" SELF-CALL
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4 ESP R+I ;
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: compile-generic ( vtable -- )
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#! Compile a faster alternative to
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#! : generic ( obj vtable -- )
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#! >r dup type r> vector-nth execute ;
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TYPE compile-jump-table ;
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#generic [ compile-generic ] "generator" set-word-property
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: ARITHMETIC-TYPE ( -- )
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#! Peek top two on datastack, store arithmetic type # in EAX.
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PEEK-DS
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EAX PUSH-R
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PEEK-2-DS
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EAX PUSH-R
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"arithmetic_type" SELF-CALL
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8 ESP R+I ;
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: compile-2generic ( vtable -- )
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#! Compile a faster alternative to
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#! : 2generic ( obj vtable -- )
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#! >r 2dup arithmetic-type r> vector-nth execute ;
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ARITHMETIC-TYPE compile-jump-table ;
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#2generic [ compile-2generic ] "generator" set-word-property
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