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 command-line make words compiler compiler.units
7 compiler.constants compiler.alien compiler.codegen
8 compiler.codegen.fixup compiler.cfg.instructions
9 compiler.cfg.builder compiler.cfg.builder.alien
10 compiler.cfg.builder.alien.params
11 compiler.cfg.intrinsics compiler.cfg.stack-frame
12 cpu.x86.assembler cpu.x86.assembler.operands cpu.x86
14 FROM: layouts => cell ;
17 M: x86.32 machine-registers
19 { int-regs { EAX ECX EDX EBP EBX } }
20 { float-regs { XMM0 XMM1 XMM2 XMM3 XMM4 XMM5 XMM6 XMM7 } }
23 M: x86.32 ds-reg ESI ;
24 M: x86.32 rs-reg EDI ;
25 M: x86.32 stack-reg ESP ;
26 M: x86.32 frame-reg EBP ;
27 M: x86.32 temp-reg ECX ;
29 M: x86.32 immediate-comparand? ( obj -- ? ) drop t ;
31 M:: x86.32 %load-vector ( dst val rep -- )
32 dst 0 [] rep copy-memory* val rc-absolute rel-binary-literal ;
34 M: x86.32 %load-float ( dst val -- )
35 <float> float-rep %load-vector ;
37 M: x86.32 %load-double ( dst val -- )
38 <double> double-rep %load-vector ;
40 M: x86.32 %mov-vm-ptr ( reg -- )
41 0 MOV 0 rc-absolute-cell rel-vm ;
43 M: x86.32 %vm-field ( dst field -- )
44 [ 0 [] MOV ] dip rc-absolute-cell rel-vm ;
46 M: x86.32 %set-vm-field ( dst field -- )
47 [ 0 [] swap MOV ] dip rc-absolute-cell rel-vm ;
49 M: x86.32 %vm-field-ptr ( dst field -- )
50 [ 0 MOV ] dip rc-absolute-cell rel-vm ;
53 stack-frame get extra-stack-space dup 16 assert= + stack@ ;
55 M: x86.32 extra-stack-space calls-vm?>> 16 0 ? ;
58 drop HEX: ffffffff [+] card-mark <byte> MOV
60 rc-absolute-cell rel-cards-offset
64 drop HEX: ffffffff [+] card-mark <byte> MOV
66 rc-absolute-cell rel-decks-offset
69 M:: x86.32 %dispatch ( src temp -- )
70 ! Load jump table base.
71 temp src HEX: ffffffff [+] LEA
72 building get length :> start
73 0 rc-absolute-cell rel-here
76 building get length :> end
77 ! Fix up the displacement above
79 [ end start - + building get dup pop* push ]
83 M: x86.32 pic-tail-reg EDX ;
85 M: x86.32 reserved-stack-space 0 ;
87 M: x86.32 %alien-invoke 0 CALL rc-relative rel-dlsym ;
89 : save-vm-ptr ( n -- )
90 stack@ 0 MOV 0 rc-absolute-cell rel-vm ;
92 M: x86.32 return-struct-in-registers? ( c-type -- ? )
94 [ return-in-registers?>> ]
95 [ heap-size { 1 2 4 8 } member? ] bi
96 os { linux netbsd solaris } member? not
99 ! On x86, parameters are usually never passed in registers,
100 ! except with Microsoft's "thiscall" and "fastcall" abis
101 M: int-regs return-reg drop EAX ;
102 M: float-regs param-regs 2drop { } ;
104 M: int-regs param-regs
106 { thiscall [ { ECX } ] }
107 { fastcall [ { ECX EDX } ] }
111 GENERIC: load-return-reg ( src rep -- )
112 GENERIC: store-return-reg ( dst rep -- )
114 M: stack-params load-return-reg drop EAX swap MOV ;
115 M: stack-params store-return-reg drop EAX MOV ;
117 M: int-rep load-return-reg drop EAX swap MOV ;
118 M: int-rep store-return-reg drop EAX MOV ;
120 :: load-float-return ( src x87-insn sse-insn -- )
123 ESP [] src sse-insn execute
124 ESP [] x87-insn execute
130 :: store-float-return ( dst x87-insn sse-insn -- )
133 ESP [] x87-insn execute
134 dst ESP [] sse-insn execute
140 M: float-rep load-return-reg
141 drop \ FLDS \ MOVSS load-float-return ;
143 M: float-rep store-return-reg
144 drop \ FSTPS \ MOVSS store-float-return ;
146 M: double-rep load-return-reg
147 drop \ FLDL \ MOVSD load-float-return ;
149 M: double-rep store-return-reg
150 drop \ FSTPL \ MOVSD store-float-return ;
152 M: x86.32 %prologue ( n -- )
154 0 PUSH rc-absolute-cell rel-this
155 3 cells - decr-stack-reg ;
157 M: x86.32 %prepare-jump
158 pic-tail-reg 0 MOV xt-tail-pic-offset rc-absolute-cell rel-here ;
160 :: call-unbox-func ( src func -- )
161 EAX src tagged-rep %copy
164 func f %alien-invoke ;
166 M:: x86.32 %unbox ( dst src func rep -- )
167 src func call-unbox-func
168 dst ?spill-slot rep store-return-reg ;
170 M:: x86.32 %store-return ( src rep -- )
171 src ?spill-slot rep load-return-reg ;
173 M:: x86.32 %store-long-long-return ( src1 src2 -- )
174 src2 EAX = [ src1 src2 XCHG src2 src1 ] [ src1 src2 ] if :> ( src1 src2 )
175 EAX src1 int-rep %copy
176 EDX src2 int-rep %copy ;
178 M:: x86.32 %store-struct-return ( src c-type -- )
179 EAX src int-rep %copy
183 M: stack-params copy-register*
186 { [ dup integer? ] [ EAX swap next-stack@ MOV EAX MOV ] }
187 { [ over integer? ] [ EAX swap MOV param@ EAX MOV ] }
190 M: x86.32 %save-param-reg [ local@ ] 2dip %copy ;
192 : (%box) ( n rep -- )
193 #! If n is f, push the return register onto the stack; we
194 #! are boxing a return value of a C function. If n is an
195 #! integer, push [ESP+n] on the stack; we are boxing a
196 #! parameter being passed to a callback from C.
197 over [ [ local@ ] dip load-return-reg ] [ 2drop ] if ;
199 M:: x86.32 %box ( dst n rep func -- )
201 rep rep-size save-vm-ptr
202 0 stack@ rep store-return-reg
204 dst EAX tagged-rep %copy ;
206 : (%box-long-long) ( n -- )
208 [ EDX swap next-stack@ MOV ]
209 [ EAX swap cell - next-stack@ MOV ] bi
212 M:: x86.32 %box-long-long ( dst n func -- )
218 dst EAX tagged-rep %copy ;
220 M: x86.32 struct-return@ ( n -- operand )
221 [ next-stack@ ] [ stack-frame get params>> local@ ] if* ;
223 M:: x86.32 %box-large-struct ( dst n c-type -- )
224 EDX n struct-return@ LEA
226 4 stack@ c-type heap-size MOV
228 "from_value_struct" f %alien-invoke
229 dst EAX tagged-rep %copy ;
231 M:: x86.32 %box-small-struct ( dst c-type -- )
232 #! Box a <= 8-byte struct returned in EAX:EDX. OS X only.
234 8 stack@ c-type heap-size MOV
237 "from_small_struct" f %alien-invoke
238 dst EAX tagged-rep %copy ;
240 M: x86.32 %begin-callback ( -- )
243 "begin_callback" f %alien-invoke ;
245 M: x86.32 %alien-callback ( quot -- )
246 [ EAX ] dip %load-reference
247 EAX quot-entry-point-offset [+] CALL ;
249 M: x86.32 %end-callback ( -- )
251 "end_callback" f %alien-invoke ;
253 GENERIC: float-function-param ( stack-slot dst src -- )
255 M:: spill-slot float-function-param ( stack-slot dst src -- )
256 ! We can clobber dst here since its going to contain the
258 dst src double-rep %copy
259 stack-slot dst double-rep %copy ;
261 M: register float-function-param
262 nip double-rep %copy ;
264 : float-function-return ( reg -- )
269 M:: x86.32 %unary-float-function ( dst src func -- )
270 ESP -16 [+] dst src float-function-param
272 func "libm" load-library %alien-invoke
273 dst float-function-return ;
275 M:: x86.32 %binary-float-function ( dst src1 src2 func -- )
276 ESP -16 [+] dst src1 float-function-param
277 ESP -8 [+] dst src2 float-function-param
279 func "libm" load-library %alien-invoke
280 dst float-function-return ;
282 : funny-large-struct-return? ( params -- ? )
283 #! MINGW ABI incompatibility disaster
284 [ return>> large-struct? ]
285 [ abi>> mingw eq? os windows? not or ]
288 : stack-arg-size ( params -- n )
290 alien-parameters flatten-c-types
291 [ alloc-parameter 2drop ] each
295 M: x86.32 stack-cleanup ( params -- n )
296 #! a) Functions which are stdcall/fastcall/thiscall have to
297 #! clean up the caller's stack frame.
298 #! b) Functions returning large structs on MINGW have to
301 { [ dup abi>> callee-cleanup? ] [ stack-arg-size ] }
302 { [ dup funny-large-struct-return? ] [ drop 4 ] }
306 M: x86.32 %cleanup ( n -- )
307 [ ESP swap SUB ] unless-zero ;
309 M:: x86.32 %call-gc ( gc-roots -- )
311 0 stack@ gc-roots gc-root-offsets %load-reference
312 "inline_gc" f %alien-invoke ;
314 M: x86.32 dummy-stack-params? f ;
316 M: x86.32 dummy-int-params? f ;
318 M: x86.32 dummy-fp-params? f ;
320 M: x86.32 long-long-on-stack? t ;
322 M: x86.32 float-on-stack? t ;
324 M: x86.32 flatten-struct-type
325 stack-size cell /i { int-rep t } <repetition> ;
327 M: x86.32 struct-return-on-stack? os linux? not ;