1 ! Copyright (C) 2005, 2010 Slava Pestov.
2 ! See http://factorcode.org/license.txt for BSD license.
3 USING: locals alien.c-types alien.libraries alien.syntax arrays
4 kernel fry math namespaces sequences system layouts io
5 vocabs.loader accessors init combinators command-line make
6 compiler compiler.units compiler.constants compiler.alien
7 compiler.codegen compiler.codegen.fixup
8 compiler.cfg.instructions compiler.cfg.builder
9 compiler.cfg.intrinsics compiler.cfg.stack-frame
10 cpu.x86.assembler cpu.x86.assembler.operands cpu.x86
12 FROM: layouts => cell ;
15 M: x86.32 machine-registers
17 { int-regs { EAX ECX EDX EBP EBX } }
18 { float-regs { XMM0 XMM1 XMM2 XMM3 XMM4 XMM5 XMM6 XMM7 } }
21 M: x86.32 ds-reg ESI ;
22 M: x86.32 rs-reg EDI ;
23 M: x86.32 stack-reg ESP ;
24 M: x86.32 frame-reg EBP ;
25 M: x86.32 temp-reg ECX ;
27 M: x86.32 %mov-vm-ptr ( reg -- )
28 0 MOV 0 rc-absolute-cell rel-vm ;
30 M: x86.32 %vm-field ( dst field -- )
31 [ 0 [] MOV ] dip vm-field-offset rc-absolute-cell rel-vm ;
33 M: x86.32 %vm-field-ptr ( dst field -- )
34 [ 0 MOV ] dip vm-field-offset rc-absolute-cell rel-vm ;
37 stack-frame get extra-stack-space dup 16 assert= + stack@ ;
39 M: x86.32 extra-stack-space calls-vm?>> 16 0 ? ;
42 drop HEX: ffffffff [+] card-mark <byte> MOV
44 rc-absolute-cell rel-cards-offset
48 drop HEX: ffffffff [+] card-mark <byte> MOV
50 rc-absolute-cell rel-decks-offset
53 M:: x86.32 %dispatch ( src temp -- )
54 ! Load jump table base.
55 temp src HEX: ffffffff [+] LEA
56 building get length :> start
57 0 rc-absolute-cell rel-here
60 building get length :> end
61 ! Fix up the displacement above
63 [ end start - + building get dup pop* push ]
67 M: x86.32 pic-tail-reg EBX ;
69 M: x86.32 reserved-stack-space 4 cells ;
71 M: x86.32 %alien-invoke 0 CALL rc-relative rel-dlsym ;
73 : save-vm-ptr ( n -- )
74 stack@ 0 MOV 0 rc-absolute-cell rel-vm ;
76 M: x86.32 return-struct-in-registers? ( c-type -- ? )
78 [ return-in-registers?>> ]
79 [ heap-size { 1 2 4 8 } member? ] bi
80 os { linux netbsd solaris } member? not
83 : struct-return@ ( n -- operand )
84 [ next-stack@ ] [ stack-frame get params>> local@ ] if* ;
86 ! On x86, parameters are never passed in registers.
87 M: int-regs return-reg drop EAX ;
88 M: int-regs param-regs drop { } ;
89 M: float-regs param-regs drop { } ;
91 GENERIC: load-return-reg ( src rep -- )
92 GENERIC: store-return-reg ( dst rep -- )
94 M: int-rep load-return-reg drop EAX swap MOV ;
95 M: int-rep store-return-reg drop EAX MOV ;
97 M: float-rep load-return-reg drop FLDS ;
98 M: float-rep store-return-reg drop FSTPS ;
100 M: double-rep load-return-reg drop FLDL ;
101 M: double-rep store-return-reg drop FSTPL ;
103 M: x86.32 %prologue ( n -- )
105 0 PUSH rc-absolute-cell rel-this
106 3 cells - decr-stack-reg ;
108 M: x86.32 %prepare-jump
109 pic-tail-reg 0 MOV xt-tail-pic-offset rc-absolute-cell rel-here ;
111 M: x86.32 %load-param-reg
113 [ [ EAX ] dip local@ MOV ] dip
116 M: x86.32 %save-param-reg 3drop ;
118 : (%box) ( n rep -- )
119 #! If n is f, push the return register onto the stack; we
120 #! are boxing a return value of a C function. If n is an
121 #! integer, push [ESP+n] on the stack; we are boxing a
122 #! parameter being passed to a callback from C.
123 over [ [ next-stack@ ] dip load-return-reg ] [ 2drop ] if ;
125 M:: x86.32 %box ( n rep func -- )
127 rep rep-size save-vm-ptr
128 0 stack@ rep store-return-reg
129 func f %alien-invoke ;
131 : (%box-long-long) ( n -- )
133 EDX over next-stack@ MOV
134 EAX swap cell - next-stack@ MOV
137 M: x86.32 %box-long-long ( n func -- )
138 [ (%box-long-long) ] dip
144 M:: x86.32 %box-large-struct ( n c-type -- )
145 EDX n struct-return@ LEA
147 4 stack@ c-type heap-size MOV
149 "from_value_struct" f %alien-invoke ;
151 M: x86.32 %prepare-box-struct ( -- )
152 ! Compute target address for value struct return
153 EAX f struct-return@ LEA
154 ! Store it as the first parameter
157 M: x86.32 %box-small-struct ( c-type -- )
158 #! Box a <= 8-byte struct returned in EAX:EDX. OS X only.
160 8 stack@ swap heap-size MOV
163 "from_small_struct" f %alien-invoke ;
165 M: x86.32 %pop-stack ( n -- )
166 EAX swap ds-reg reg-stack MOV ;
168 M: x86.32 %pop-context-stack ( -- )
169 temp-reg "ctx" %vm-field
170 EAX temp-reg "datastack" context-field-offset [+] MOV
172 temp-reg "datastack" context-field-offset [+] bootstrap-cell SUB ;
174 : call-unbox-func ( func -- )
179 M: x86.32 %unbox ( n rep func -- )
180 #! The value being unboxed must already be in EAX.
181 #! If n is f, we're unboxing a return value about to be
182 #! returned by the callback. Otherwise, we're unboxing
183 #! a parameter to a C function about to be called.
185 ! Store the return value on the C stack
186 over [ [ local@ ] dip store-return-reg ] [ 2drop ] if ;
188 M: x86.32 %unbox-long-long ( n func -- )
190 ! Store the return value on the C stack
193 [ 4 + local@ EDX MOV ] bi
196 : %unbox-struct-1 ( -- )
197 #! Alien must be in EAX.
200 "alien_offset" f %alien-invoke
204 : %unbox-struct-2 ( -- )
205 #! Alien must be in EAX.
208 "alien_offset" f %alien-invoke
214 M: x86 %unbox-small-struct ( size -- )
215 #! Alien must be in EAX.
216 heap-size cell align cell /i {
217 { 1 [ %unbox-struct-1 ] }
218 { 2 [ %unbox-struct-2 ] }
221 M:: x86.32 %unbox-large-struct ( n c-type -- )
222 ! Alien must be in EAX.
223 ! Compute destination address
226 8 stack@ c-type heap-size MOV
229 "to_value_struct" f %alien-invoke ;
231 M: x86.32 %prepare-alien-indirect ( -- )
236 "pinned_alien_offset" f %alien-invoke
239 M: x86.32 %alien-indirect ( -- )
242 M: x86.32 %begin-callback ( -- )
244 "begin_callback" f %alien-invoke ;
246 M: x86.32 %alien-callback ( quot -- )
247 EAX EDX %restore-context
248 EAX swap %load-reference
249 EAX quot-entry-point-offset [+] CALL
250 EAX EDX %save-context ;
252 M: x86.32 %end-callback ( -- )
254 "end_callback" f %alien-invoke ;
256 M: x86.32 %end-callback-value ( ctype -- )
260 ! Place former top of data stack back in EAX
265 GENERIC: float-function-param ( stack-slot dst src -- )
267 M:: spill-slot float-function-param ( stack-slot dst src -- )
268 ! We can clobber dst here since its going to contain the
270 dst src double-rep %copy
271 stack-slot dst double-rep %copy ;
273 M: register float-function-param
274 nip double-rep %copy ;
276 : float-function-return ( reg -- )
281 M:: x86.32 %unary-float-function ( dst src func -- )
282 ESP -16 [+] dst src float-function-param
284 func "libm" load-library %alien-invoke
285 dst float-function-return ;
287 M:: x86.32 %binary-float-function ( dst src1 src2 func -- )
288 ESP -16 [+] dst src1 float-function-param
289 ESP -8 [+] dst src2 float-function-param
291 func "libm" load-library %alien-invoke
292 dst float-function-return ;
294 : stdcall? ( params -- ? )
297 : funny-large-struct-return? ( params -- ? )
298 #! MINGW ABI incompatibility disaster
299 [ return>> large-struct? ]
300 [ abi>> mingw = os windows? not or ]
303 M: x86.32 %cleanup ( params -- )
304 #! a) If we just called an stdcall function in Windows, it
305 #! cleaned up the stack frame for us. But we don't want that
306 #! so we 'undo' the cleanup since we do that in %epilogue.
307 #! b) If we just called a function returning a struct, we
310 { [ dup stdcall? ] [ drop ESP stack-frame get params>> SUB ] }
311 { [ dup funny-large-struct-return? ] [ drop EAX PUSH ] }
315 M:: x86.32 %call-gc ( gc-root-count temp -- )
316 temp gc-root-base special@ LEA
318 4 stack@ gc-root-count MOV
320 "inline_gc" f %alien-invoke ;
322 M: x86.32 dummy-stack-params? f ;
324 M: x86.32 dummy-int-params? f ;
326 M: x86.32 dummy-fp-params? f ;
328 M: x86.32 callback-return-rewind ( params -- n )
329 #! a) If the callback is stdcall, we have to clean up the
330 #! caller's stack frame.
331 #! b) If the callback is returning a large struct, we have
334 { [ dup stdcall? ] [ <alien-stack-frame> [ params>> ] [ return>> ] bi + ] }
335 { [ dup funny-large-struct-return? ] [ drop 4 ] }
340 M: object flatten-value-type (flatten-int-type) ;