337 lines
9.0 KiB
Factor
Executable File
337 lines
9.0 KiB
Factor
Executable File
! Copyright (C) 2005, 2009 Slava Pestov.
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! See http://factorcode.org/license.txt for BSD license.
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USING: locals alien.c-types alien.libraries alien.syntax arrays
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kernel fry math namespaces sequences system layouts io
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vocabs.loader accessors init combinators command-line make
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compiler compiler.units compiler.constants compiler.alien
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compiler.codegen compiler.codegen.fixup
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compiler.cfg.instructions compiler.cfg.builder
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compiler.cfg.intrinsics compiler.cfg.stack-frame
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cpu.x86.assembler cpu.x86.assembler.operands cpu.x86
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cpu.architecture ;
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IN: cpu.x86.32
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! We implement the FFI for Linux, OS X and Windows all at once.
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! OS X requires that the stack be 16-byte aligned.
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M: x86.32 machine-registers
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{
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{ int-regs { EAX ECX EDX EBP EBX } }
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{ float-regs { XMM0 XMM1 XMM2 XMM3 XMM4 XMM5 XMM6 XMM7 } }
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} ;
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M: x86.32 ds-reg ESI ;
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M: x86.32 rs-reg EDI ;
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M: x86.32 stack-reg ESP ;
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M: x86.32 temp-reg ECX ;
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: local@ ( n -- op )
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stack-frame get extra-stack-space dup 16 assert= + stack@ ;
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M: x86.32 extra-stack-space calls-vm?>> 16 0 ? ;
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M: x86.32 %mark-card
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drop HEX: ffffffff [+] card-mark <byte> MOV
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building get pop
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rc-absolute-cell rel-cards-offset
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building get push ;
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M: x86.32 %mark-deck
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drop HEX: ffffffff [+] card-mark <byte> MOV
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building get pop
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rc-absolute-cell rel-decks-offset
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building get push ;
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M:: x86.32 %dispatch ( src temp -- )
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! Load jump table base.
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temp src HEX: ffffffff [+] LEA
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building get length cell - :> start
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0 rc-absolute-cell rel-here
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! Go
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temp HEX: 7f [+] JMP
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building get length :> end
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! Fix up the displacement above
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cell code-alignment
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[ end start - + building get dup pop* push ]
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[ align-code ]
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bi ;
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! Registers for fastcall
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: param-reg-1 ( -- reg ) EAX ;
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: param-reg-2 ( -- reg ) EDX ;
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M: x86.32 pic-tail-reg EBX ;
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M: x86.32 reserved-stack-space 4 cells ;
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M: x86.32 %alien-invoke 0 CALL rc-relative rel-dlsym ;
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: save-vm-ptr ( n -- )
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stack@ 0 MOV 0 rc-absolute-cell rel-vm ;
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M: x86.32 return-struct-in-registers? ( c-type -- ? )
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c-type
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[ return-in-registers?>> ]
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[ heap-size { 1 2 4 8 } member? ] bi
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os { linux netbsd solaris } member? not
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and or ;
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: struct-return@ ( n -- operand )
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[ next-stack@ ] [ stack-frame get params>> local@ ] if* ;
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! On x86, parameters are never passed in registers.
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M: int-regs return-reg drop EAX ;
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M: int-regs param-regs drop { } ;
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M: float-regs param-regs drop { } ;
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GENERIC: load-return-reg ( src rep -- )
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GENERIC: store-return-reg ( dst rep -- )
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M: int-rep load-return-reg drop EAX swap MOV ;
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M: int-rep store-return-reg drop EAX MOV ;
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M: float-rep load-return-reg drop FLDS ;
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M: float-rep store-return-reg drop FSTPS ;
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M: double-rep load-return-reg drop FLDL ;
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M: double-rep store-return-reg drop FSTPL ;
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M: x86.32 %prologue ( n -- )
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dup PUSH
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0 PUSH rc-absolute-cell rel-this
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3 cells - decr-stack-reg ;
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M: x86.32 %load-param-reg
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stack-params assert=
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[ [ EAX ] dip local@ MOV ] dip
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stack@ EAX MOV ;
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M: x86.32 %save-param-reg 3drop ;
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: (%box) ( n rep -- )
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#! If n is f, push the return register onto the stack; we
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#! are boxing a return value of a C function. If n is an
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#! integer, push [ESP+n] on the stack; we are boxing a
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#! parameter being passed to a callback from C.
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over [ [ next-stack@ ] dip load-return-reg ] [ 2drop ] if ;
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M:: x86.32 %box ( n rep func -- )
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n rep (%box)
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rep rep-size save-vm-ptr
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0 stack@ rep store-return-reg
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func f %alien-invoke ;
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: (%box-long-long) ( n -- )
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[
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EDX over next-stack@ MOV
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EAX swap cell - next-stack@ MOV
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] when* ;
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M: x86.32 %box-long-long ( n func -- )
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[ (%box-long-long) ] dip
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8 save-vm-ptr
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4 stack@ EDX MOV
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0 stack@ EAX MOV
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f %alien-invoke ;
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M:: x86.32 %box-large-struct ( n c-type -- )
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EDX n struct-return@ LEA
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8 save-vm-ptr
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4 stack@ c-type heap-size MOV
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0 stack@ EDX MOV
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"box_value_struct" f %alien-invoke ;
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M: x86.32 %prepare-box-struct ( -- )
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! Compute target address for value struct return
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EAX f struct-return@ LEA
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! Store it as the first parameter
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0 local@ EAX MOV ;
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M: x86.32 %box-small-struct ( c-type -- )
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#! Box a <= 8-byte struct returned in EAX:EDX. OS X only.
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12 save-vm-ptr
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8 stack@ swap heap-size MOV
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4 stack@ EDX MOV
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0 stack@ EAX MOV
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"box_small_struct" f %alien-invoke ;
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M: x86.32 %prepare-unbox ( -- )
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EAX swap ds-reg reg-stack MOV ;
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: call-unbox-func ( func -- )
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4 save-vm-ptr
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0 stack@ EAX MOV
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f %alien-invoke ;
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M: x86.32 %unbox ( n rep func -- )
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#! The value being unboxed must already be in EAX.
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#! If n is f, we're unboxing a return value about to be
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#! returned by the callback. Otherwise, we're unboxing
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#! a parameter to a C function about to be called.
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call-unbox-func
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! Store the return value on the C stack
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over [ [ local@ ] dip store-return-reg ] [ 2drop ] if ;
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M: x86.32 %unbox-long-long ( n func -- )
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call-unbox-func
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! Store the return value on the C stack
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[
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[ local@ EAX MOV ]
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[ 4 + local@ EDX MOV ] bi
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] when* ;
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: %unbox-struct-1 ( -- )
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#! Alien must be in EAX.
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4 save-vm-ptr
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0 stack@ EAX MOV
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"alien_offset" f %alien-invoke
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! Load first cell
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EAX EAX [] MOV ;
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: %unbox-struct-2 ( -- )
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#! Alien must be in EAX.
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4 save-vm-ptr
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0 stack@ EAX MOV
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"alien_offset" f %alien-invoke
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! Load second cell
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EDX EAX 4 [+] MOV
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! Load first cell
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EAX EAX [] MOV ;
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M: x86 %unbox-small-struct ( size -- )
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#! Alien must be in EAX.
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heap-size cell align cell /i {
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{ 1 [ %unbox-struct-1 ] }
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{ 2 [ %unbox-struct-2 ] }
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} case ;
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M:: x86.32 %unbox-large-struct ( n c-type -- )
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! Alien must be in EAX.
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! Compute destination address
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EDX n local@ LEA
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12 save-vm-ptr
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8 stack@ c-type heap-size MOV
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4 stack@ EDX MOV
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0 stack@ EAX MOV
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"to_value_struct" f %alien-invoke ;
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M: x86.32 %nest-stacks ( -- )
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! Save current frame. See comment in vm/contexts.hpp
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EAX stack-reg stack-frame get total-size>> 3 cells - [+] LEA
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4 save-vm-ptr
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0 stack@ EAX MOV
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"nest_stacks" f %alien-invoke ;
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M: x86.32 %unnest-stacks ( -- )
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0 save-vm-ptr
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"unnest_stacks" f %alien-invoke ;
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M: x86.32 %prepare-alien-indirect ( -- )
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0 save-vm-ptr
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"unbox_alien" f %alien-invoke
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EBP EAX MOV ;
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M: x86.32 %alien-indirect ( -- )
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EBP CALL ;
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M: x86.32 %alien-callback ( quot -- )
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! Fastcall
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param-reg-1 swap %load-reference
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param-reg-2 %mov-vm-ptr
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"c_to_factor" f %alien-invoke ;
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M: x86.32 %callback-value ( ctype -- )
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0 %prepare-unbox
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4 stack@ EAX MOV
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0 save-vm-ptr
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! Restore data/call/retain stacks
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"unnest_stacks" f %alien-invoke
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! Place former top of data stack back in EAX
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EAX 4 stack@ MOV
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! Unbox EAX
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unbox-return ;
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GENERIC: float-function-param ( stack-slot dst src -- )
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M:: spill-slot float-function-param ( stack-slot dst src -- )
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! We can clobber dst here since its going to contain the
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! final result
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dst src double-rep %copy
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stack-slot dst double-rep %copy ;
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M: register float-function-param
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nip double-rep %copy ;
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: float-function-return ( reg -- )
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ESP [] FSTPL
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ESP [] MOVSD
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ESP 16 ADD ;
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M:: x86.32 %unary-float-function ( dst src func -- )
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ESP -16 [+] dst src float-function-param
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ESP 16 SUB
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func "libm" load-library %alien-invoke
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dst float-function-return ;
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M:: x86.32 %binary-float-function ( dst src1 src2 func -- )
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ESP -16 [+] dst src1 float-function-param
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ESP -8 [+] dst src2 float-function-param
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ESP 16 SUB
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func "libm" load-library %alien-invoke
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dst float-function-return ;
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M: x86.32 %cleanup ( params -- )
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#! a) If we just called an stdcall function in Windows, it
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#! cleaned up the stack frame for us. But we don't want that
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#! so we 'undo' the cleanup since we do that in %epilogue.
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#! b) If we just called a function returning a struct, we
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#! have to fix ESP.
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{
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{
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[ dup abi>> "stdcall" = ]
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[ drop ESP stack-frame get params>> SUB ]
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} {
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[ dup return>> large-struct? ]
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[ drop EAX PUSH ]
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}
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[ drop ]
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} cond ;
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M: x86.32 %callback-return ( n -- )
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#! a) If the callback is stdcall, we have to clean up the
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#! caller's stack frame.
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#! b) If the callback is returning a large struct, we have
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#! to fix ESP.
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{
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{ [ dup abi>> "stdcall" = ] [
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<alien-stack-frame>
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[ params>> ] [ return>> ] bi +
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] }
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{ [ dup return>> large-struct? ] [ drop 4 ] }
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[ drop 0 ]
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} cond RET ;
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M:: x86.32 %call-gc ( gc-root-count temp -- )
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temp gc-root-base special@ LEA
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8 save-vm-ptr
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4 stack@ gc-root-count MOV
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0 stack@ temp MOV
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"inline_gc" f %alien-invoke ;
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M: x86.32 dummy-stack-params? f ;
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M: x86.32 dummy-int-params? f ;
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M: x86.32 dummy-fp-params? f ;
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! Dreadful
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M: object flatten-value-type (flatten-int-type) ;
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os windows? [
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cell longlong c-type (>>align)
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cell ulonglong c-type (>>align)
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4 double c-type (>>align)
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] unless
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check-sse
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