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 rc-absolute-cell rel-vm ;
33 M: x86.32 %set-vm-field ( dst field -- )
34 [ 0 [] swap MOV ] dip rc-absolute-cell rel-vm ;
36 M: x86.32 %vm-field-ptr ( dst field -- )
37 [ 0 MOV ] dip rc-absolute-cell rel-vm ;
40 stack-frame get extra-stack-space dup 16 assert= + stack@ ;
42 M: x86.32 extra-stack-space calls-vm?>> 16 0 ? ;
45 drop HEX: ffffffff [+] card-mark <byte> MOV
47 rc-absolute-cell rel-cards-offset
51 drop HEX: ffffffff [+] card-mark <byte> MOV
53 rc-absolute-cell rel-decks-offset
56 M:: x86.32 %dispatch ( src temp -- )
57 ! Load jump table base.
58 temp src HEX: ffffffff [+] LEA
59 building get length :> start
60 0 rc-absolute-cell rel-here
63 building get length :> end
64 ! Fix up the displacement above
66 [ end start - + building get dup pop* push ]
70 M: x86.32 pic-tail-reg EDX ;
72 M: x86.32 reserved-stack-space 4 cells ;
74 M: x86.32 %alien-invoke 0 CALL rc-relative rel-dlsym ;
76 : save-vm-ptr ( n -- )
77 stack@ 0 MOV 0 rc-absolute-cell rel-vm ;
79 M: x86.32 return-struct-in-registers? ( c-type -- ? )
81 [ return-in-registers?>> ]
82 [ heap-size { 1 2 4 8 } member? ] bi
83 os { linux netbsd solaris } member? not
86 : struct-return@ ( n -- operand )
87 [ next-stack@ ] [ stack-frame get params>> local@ ] if* ;
89 ! On x86, parameters are never passed in registers.
90 M: int-regs return-reg drop EAX ;
91 M: int-regs param-regs drop { } ;
92 M: float-regs param-regs drop { } ;
94 GENERIC: load-return-reg ( src rep -- )
95 GENERIC: store-return-reg ( dst rep -- )
97 M: int-rep load-return-reg drop EAX swap MOV ;
98 M: int-rep store-return-reg drop EAX MOV ;
100 M: float-rep load-return-reg drop FLDS ;
101 M: float-rep store-return-reg drop FSTPS ;
103 M: double-rep load-return-reg drop FLDL ;
104 M: double-rep store-return-reg drop FSTPL ;
106 M: x86.32 %prologue ( n -- )
108 0 PUSH rc-absolute-cell rel-this
109 3 cells - decr-stack-reg ;
111 M: x86.32 %prepare-jump
112 pic-tail-reg 0 MOV xt-tail-pic-offset rc-absolute-cell rel-here ;
114 M: x86.32 %load-param-reg
116 [ [ EAX ] dip local@ MOV ] dip
119 M: x86.32 %save-param-reg 3drop ;
121 : (%box) ( n rep -- )
122 #! If n is f, push the return register onto the stack; we
123 #! are boxing a return value of a C function. If n is an
124 #! integer, push [ESP+n] on the stack; we are boxing a
125 #! parameter being passed to a callback from C.
126 over [ [ next-stack@ ] dip load-return-reg ] [ 2drop ] if ;
128 M:: x86.32 %box ( n rep func -- )
130 rep rep-size save-vm-ptr
131 0 stack@ rep store-return-reg
132 func f %alien-invoke ;
134 : (%box-long-long) ( n -- )
136 EDX over next-stack@ MOV
137 EAX swap cell - next-stack@ MOV
140 M: x86.32 %box-long-long ( n func -- )
141 [ (%box-long-long) ] dip
147 M:: x86.32 %box-large-struct ( n c-type -- )
148 EDX n struct-return@ LEA
150 4 stack@ c-type heap-size MOV
152 "from_value_struct" f %alien-invoke ;
154 M: x86.32 %prepare-box-struct ( -- )
155 ! Compute target address for value struct return
156 EAX f struct-return@ LEA
157 ! Store it as the first parameter
160 M: x86.32 %box-small-struct ( c-type -- )
161 #! Box a <= 8-byte struct returned in EAX:EDX. OS X only.
163 8 stack@ swap heap-size MOV
166 "from_small_struct" f %alien-invoke ;
168 M: x86.32 %pop-stack ( n -- )
169 EAX swap ds-reg reg-stack MOV ;
171 M: x86.32 %pop-context-stack ( -- )
173 EAX temp-reg "datastack" context-field-offset [+] MOV
175 temp-reg "datastack" context-field-offset [+] bootstrap-cell SUB ;
177 : call-unbox-func ( func -- )
182 M: x86.32 %unbox ( n rep func -- )
183 #! The value being unboxed must already be in EAX.
184 #! If n is f, we're unboxing a return value about to be
185 #! returned by the callback. Otherwise, we're unboxing
186 #! a parameter to a C function about to be called.
188 ! Store the return value on the C stack
189 over [ [ local@ ] dip store-return-reg ] [ 2drop ] if ;
191 M: x86.32 %unbox-long-long ( n func -- )
193 ! Store the return value on the C stack
196 [ 4 + local@ EDX MOV ] bi
199 : %unbox-struct-1 ( -- )
200 #! Alien must be in EAX.
203 "alien_offset" f %alien-invoke
207 : %unbox-struct-2 ( -- )
208 #! Alien must be in EAX.
211 "alien_offset" f %alien-invoke
217 M: x86 %unbox-small-struct ( size -- )
218 #! Alien must be in EAX.
219 heap-size cell align cell /i {
220 { 1 [ %unbox-struct-1 ] }
221 { 2 [ %unbox-struct-2 ] }
224 M:: x86.32 %unbox-large-struct ( n c-type -- )
225 ! Alien must be in EAX.
226 ! Compute destination address
229 8 stack@ c-type heap-size MOV
232 "to_value_struct" f %alien-invoke ;
234 M: x86.32 %prepare-alien-indirect ( -- )
239 "pinned_alien_offset" f %alien-invoke
242 M: x86.32 %alien-indirect ( -- )
245 M: x86.32 %begin-callback ( -- )
248 "begin_callback" f %alien-invoke ;
250 M: x86.32 %alien-callback ( quot -- )
251 EAX EDX %restore-context
252 EAX swap %load-reference
253 EAX quot-entry-point-offset [+] CALL
254 EAX EDX %save-context ;
256 M: x86.32 %end-callback ( -- )
258 "end_callback" f %alien-invoke ;
260 M: x86.32 %end-callback-value ( ctype -- )
264 ! Place former top of data stack back in EAX
269 GENERIC: float-function-param ( stack-slot dst src -- )
271 M:: spill-slot float-function-param ( stack-slot dst src -- )
272 ! We can clobber dst here since its going to contain the
274 dst src double-rep %copy
275 stack-slot dst double-rep %copy ;
277 M: register float-function-param
278 nip double-rep %copy ;
280 : float-function-return ( reg -- )
285 M:: x86.32 %unary-float-function ( dst src func -- )
286 ESP -16 [+] dst src float-function-param
288 func "libm" load-library %alien-invoke
289 dst float-function-return ;
291 M:: x86.32 %binary-float-function ( dst src1 src2 func -- )
292 ESP -16 [+] dst src1 float-function-param
293 ESP -8 [+] dst src2 float-function-param
295 func "libm" load-library %alien-invoke
296 dst float-function-return ;
298 : stdcall? ( params -- ? )
301 : funny-large-struct-return? ( params -- ? )
302 #! MINGW ABI incompatibility disaster
303 [ return>> large-struct? ]
304 [ abi>> "mingw" = os windows? not or ]
307 M: x86.32 %cleanup ( params -- )
308 #! a) If we just called an stdcall function in Windows, it
309 #! cleaned up the stack frame for us. But we don't want that
310 #! so we 'undo' the cleanup since we do that in %epilogue.
311 #! b) If we just called a function returning a struct, we
314 { [ dup stdcall? ] [ drop ESP stack-frame get params>> SUB ] }
315 { [ dup funny-large-struct-return? ] [ drop EAX PUSH ] }
319 M:: x86.32 %call-gc ( gc-root-count temp -- )
320 temp gc-root-base special@ LEA
322 4 stack@ gc-root-count MOV
324 "inline_gc" f %alien-invoke ;
326 M: x86.32 dummy-stack-params? f ;
328 M: x86.32 dummy-int-params? f ;
330 M: x86.32 dummy-fp-params? f ;
332 M: x86.32 callback-return-rewind ( params -- n )
333 #! a) If the callback is stdcall, we have to clean up the
334 #! caller's stack frame.
335 #! b) If the callback is returning a large struct, we have
338 { [ dup stdcall? ] [ <alien-stack-frame> [ params>> ] [ return>> ] bi + ] }
339 { [ dup funny-large-struct-return? ] [ drop 4 ] }
344 M: object flatten-value-type (flatten-int-type) ;