1 ! Copyright (C) 2005, 2010 Slava Pestov.
2 ! See http://factorcode.org/license.txt for BSD license.
3 USING: locals alien alien.c-types alien.libraries alien.syntax
4 arrays kernel fry math namespaces sequences system layouts io
5 vocabs.loader accessors init classes.struct combinators
6 make words compiler.constants compiler.codegen.fixup
7 compiler.cfg.instructions compiler.cfg.builder compiler.cfg.intrinsics
8 compiler.cfg.stack-frame cpu.x86.assembler cpu.x86.assembler.operands
9 cpu.x86 cpu.architecture vm ;
10 FROM: layouts => cell ;
13 M: x86.32 machine-registers
15 { int-regs { EAX ECX EDX EBP EBX } }
16 { float-regs { XMM0 XMM1 XMM2 XMM3 XMM4 XMM5 XMM6 XMM7 } }
19 M: x86.32 ds-reg ESI ;
20 M: x86.32 rs-reg EDI ;
21 M: x86.32 stack-reg ESP ;
22 M: x86.32 frame-reg EBP ;
23 M: x86.32 temp-reg ECX ;
25 M: x86.32 immediate-comparand? ( obj -- ? ) drop t ;
27 M:: x86.32 %load-vector ( dst val rep -- )
28 dst 0 [] rep copy-memory* val rc-absolute rel-binary-literal ;
30 M: x86.32 %load-float ( dst val -- )
31 <float> float-rep %load-vector ;
33 M: x86.32 %load-double ( dst val -- )
34 <double> double-rep %load-vector ;
36 M: x86.32 %mov-vm-ptr ( reg -- )
37 0 MOV 0 rc-absolute-cell rel-vm ;
39 M: x86.32 %vm-field ( dst field -- )
40 [ 0 [] MOV ] dip rc-absolute-cell rel-vm ;
42 M: x86.32 %set-vm-field ( dst field -- )
43 [ 0 [] swap MOV ] dip rc-absolute-cell rel-vm ;
45 M: x86.32 %vm-field-ptr ( dst field -- )
46 [ 0 MOV ] dip rc-absolute-cell rel-vm ;
49 stack-frame get extra-stack-space dup 16 assert= + stack@ ;
51 M: x86.32 extra-stack-space calls-vm?>> 16 0 ? ;
54 drop HEX: ffffffff [+] card-mark <byte> MOV
56 rc-absolute-cell rel-cards-offset
60 drop HEX: ffffffff [+] card-mark <byte> MOV
62 rc-absolute-cell rel-decks-offset
65 M:: x86.32 %dispatch ( src temp -- )
66 ! Load jump table base.
67 temp src HEX: ffffffff [+] LEA
68 building get length :> start
69 0 rc-absolute-cell rel-here
72 building get length :> end
73 ! Fix up the displacement above
75 [ end start - + building get dup pop* push ]
79 M: x86.32 pic-tail-reg EDX ;
81 M: x86.32 reserved-stack-space 0 ;
83 M: x86.32 %alien-invoke 0 CALL rc-relative rel-dlsym ;
85 : save-vm-ptr ( n -- )
86 stack@ 0 MOV 0 rc-absolute-cell rel-vm ;
88 M: x86.32 return-struct-in-registers? ( c-type -- ? )
90 [ return-in-registers?>> ]
91 [ heap-size { 1 2 4 8 } member? ] bi
92 os { linux netbsd solaris } member? not
95 ! On x86, parameters are usually never passed in registers,
96 ! except with Microsoft's "thiscall" and "fastcall" abis
97 M: int-regs return-reg drop EAX ;
98 M: float-regs param-regs 2drop { } ;
100 M: int-regs param-regs
102 { thiscall [ { ECX } ] }
103 { fastcall [ { ECX EDX } ] }
107 GENERIC: load-return-reg ( src rep -- )
108 GENERIC: store-return-reg ( dst rep -- )
110 M: stack-params load-return-reg drop EAX swap MOV ;
111 M: stack-params store-return-reg drop EAX MOV ;
113 M: int-rep load-return-reg drop EAX swap MOV ;
114 M: int-rep store-return-reg drop EAX MOV ;
116 :: load-float-return ( src x87-insn sse-insn -- )
119 ESP [] src sse-insn execute
120 ESP [] x87-insn execute
126 :: store-float-return ( dst x87-insn sse-insn -- )
129 ESP [] x87-insn execute
130 dst ESP [] sse-insn execute
136 M: float-rep load-return-reg
137 drop \ FLDS \ MOVSS load-float-return ;
139 M: float-rep store-return-reg
140 drop \ FSTPS \ MOVSS store-float-return ;
142 M: double-rep load-return-reg
143 drop \ FLDL \ MOVSD load-float-return ;
145 M: double-rep store-return-reg
146 drop \ FSTPL \ MOVSD store-float-return ;
148 M: x86.32 %prologue ( n -- )
150 0 PUSH rc-absolute-cell rel-this
151 3 cells - decr-stack-reg ;
153 M: x86.32 %prepare-jump
154 pic-tail-reg 0 MOV xt-tail-pic-offset rc-absolute-cell rel-here ;
156 :: call-unbox-func ( src func -- )
157 EAX src tagged-rep %copy
160 func f %alien-invoke ;
162 M:: x86.32 %unbox ( dst src func rep -- )
163 src func call-unbox-func
164 dst ?spill-slot rep store-return-reg ;
166 M:: x86.32 %store-return ( src rep -- )
167 src ?spill-slot rep load-return-reg ;
169 M:: x86.32 %store-long-long-return ( src1 src2 -- )
170 src2 EAX = [ src1 src2 XCHG src2 src1 ] [ src1 src2 ] if :> ( src1 src2 )
171 EAX src1 int-rep %copy
172 EDX src2 int-rep %copy ;
174 M:: x86.32 %store-struct-return ( src c-type -- )
175 EAX src int-rep %copy
179 M: stack-params copy-register*
182 { [ dup integer? ] [ EAX swap next-stack@ MOV EAX MOV ] }
183 { [ over integer? ] [ EAX swap MOV param@ EAX MOV ] }
186 M: x86.32 %save-param-reg [ local@ ] 2dip %copy ;
188 : (%box) ( n rep -- )
189 #! If n is f, push the return register onto the stack; we
190 #! are boxing a return value of a C function. If n is an
191 #! integer, push [ESP+n] on the stack; we are boxing a
192 #! parameter being passed to a callback from C.
193 over [ [ local@ ] dip load-return-reg ] [ 2drop ] if ;
195 M:: x86.32 %box ( dst n rep func -- )
197 rep rep-size save-vm-ptr
198 0 stack@ rep store-return-reg
200 dst EAX tagged-rep %copy ;
202 : (%box-long-long) ( n -- )
204 [ EDX swap next-stack@ MOV ]
205 [ EAX swap cell - next-stack@ MOV ] bi
208 M:: x86.32 %box-long-long ( dst n func -- )
214 dst EAX tagged-rep %copy ;
216 M: x86.32 struct-return@ ( n -- operand )
217 [ next-stack@ ] [ stack-frame get params>> local@ ] if* ;
219 M:: x86.32 %box-large-struct ( dst n c-type -- )
220 EDX n struct-return@ LEA
222 4 stack@ c-type heap-size MOV
224 "from_value_struct" f %alien-invoke
225 dst EAX tagged-rep %copy ;
227 M:: x86.32 %box-small-struct ( dst c-type -- )
228 #! Box a <= 8-byte struct returned in EAX:EDX. OS X only.
230 8 stack@ c-type heap-size MOV
233 "from_small_struct" f %alien-invoke
234 dst EAX tagged-rep %copy ;
236 M: x86.32 %begin-callback ( -- )
239 "begin_callback" f %alien-invoke ;
241 M: x86.32 %alien-callback ( quot -- )
242 [ EAX ] dip %load-reference
243 EAX quot-entry-point-offset [+] CALL ;
245 M: x86.32 %end-callback ( -- )
247 "end_callback" f %alien-invoke ;
249 GENERIC: float-function-param ( stack-slot dst src -- )
251 M:: spill-slot float-function-param ( stack-slot dst src -- )
252 ! We can clobber dst here since its going to contain the
254 dst src double-rep %copy
255 stack-slot dst double-rep %copy ;
257 M: register float-function-param
258 nip double-rep %copy ;
260 : float-function-return ( reg -- )
265 M:: x86.32 %unary-float-function ( dst src func -- )
266 ESP -16 [+] dst src float-function-param
268 func "libm" load-library %alien-invoke
269 dst float-function-return ;
271 M:: x86.32 %binary-float-function ( dst src1 src2 func -- )
272 ESP -16 [+] dst src1 float-function-param
273 ESP -8 [+] dst src2 float-function-param
275 func "libm" load-library %alien-invoke
276 dst float-function-return ;
278 : funny-large-struct-return? ( return abi -- ? )
279 #! MINGW ABI incompatibility disaster
280 [ large-struct? ] [ mingw eq? os windows? not or ] bi* and ;
282 M:: x86.32 stack-cleanup ( stack-size return abi -- n )
283 #! a) Functions which are stdcall/fastcall/thiscall have to
284 #! clean up the caller's stack frame.
285 #! b) Functions returning large structs on MINGW have to
288 { [ abi callee-cleanup? ] [ stack-size ] }
289 { [ return abi funny-large-struct-return? ] [ 4 ] }
293 M: x86.32 %cleanup ( n -- )
294 [ ESP swap SUB ] unless-zero ;
296 M:: x86.32 %call-gc ( gc-roots -- )
298 0 stack@ gc-roots gc-root-offsets %load-reference
299 "inline_gc" f %alien-invoke ;
301 M: x86.32 dummy-stack-params? f ;
303 M: x86.32 dummy-int-params? f ;
305 M: x86.32 dummy-fp-params? f ;
307 M: x86.32 long-long-on-stack? t ;
309 M: x86.32 float-on-stack? t ;
311 M: x86.32 flatten-struct-type
312 stack-size cell /i { int-rep t } <repetition> ;
314 M: x86.32 struct-return-on-stack? os linux? not ;