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.intrinsics compiler.cfg.stack-frame
11 cpu.x86.assembler cpu.x86.assembler.operands cpu.x86
13 FROM: layouts => cell ;
16 M: x86.32 machine-registers
18 { int-regs { EAX ECX EDX EBP EBX } }
19 { float-regs { XMM0 XMM1 XMM2 XMM3 XMM4 XMM5 XMM6 XMM7 } }
22 M: x86.32 ds-reg ESI ;
23 M: x86.32 rs-reg EDI ;
24 M: x86.32 stack-reg ESP ;
25 M: x86.32 frame-reg EBP ;
26 M: x86.32 temp-reg ECX ;
28 M: x86.32 immediate-comparand? ( obj -- ? ) drop t ;
30 M:: x86.32 %load-vector ( dst val rep -- )
31 dst 0 [] rep copy-memory* val rc-absolute rel-binary-literal ;
33 M: x86.32 %load-float ( dst val -- )
34 <float> float-rep %load-vector ;
36 M: x86.32 %load-double ( dst val -- )
37 <double> double-rep %load-vector ;
39 M: x86.32 %mov-vm-ptr ( reg -- )
40 0 MOV 0 rc-absolute-cell rel-vm ;
42 M: x86.32 %vm-field ( dst field -- )
43 [ 0 [] MOV ] dip rc-absolute-cell rel-vm ;
45 M: x86.32 %set-vm-field ( dst field -- )
46 [ 0 [] swap MOV ] dip rc-absolute-cell rel-vm ;
48 M: x86.32 %vm-field-ptr ( dst field -- )
49 [ 0 MOV ] dip rc-absolute-cell rel-vm ;
52 stack-frame get extra-stack-space dup 16 assert= + stack@ ;
54 M: x86.32 extra-stack-space calls-vm?>> 16 0 ? ;
57 drop HEX: ffffffff [+] card-mark <byte> MOV
59 rc-absolute-cell rel-cards-offset
63 drop HEX: ffffffff [+] card-mark <byte> MOV
65 rc-absolute-cell rel-decks-offset
68 M:: x86.32 %dispatch ( src temp -- )
69 ! Load jump table base.
70 temp src HEX: ffffffff [+] LEA
71 building get length :> start
72 0 rc-absolute-cell rel-here
75 building get length :> end
76 ! Fix up the displacement above
78 [ end start - + building get dup pop* push ]
82 M: x86.32 pic-tail-reg EDX ;
84 M: x86.32 reserved-stack-space 0 ;
86 M: x86.32 %alien-invoke 0 CALL rc-relative rel-dlsym ;
88 : save-vm-ptr ( n -- )
89 stack@ 0 MOV 0 rc-absolute-cell rel-vm ;
91 M: x86.32 return-struct-in-registers? ( c-type -- ? )
93 [ return-in-registers?>> ]
94 [ heap-size { 1 2 4 8 } member? ] bi
95 os { linux netbsd solaris } member? not
98 ! On x86, parameters are usually never passed in registers,
99 ! except with Microsoft's "thiscall" and "fastcall" abis
100 M: int-regs return-reg drop EAX ;
101 M: float-regs param-regs 2drop { } ;
103 M: int-regs param-regs
105 { thiscall [ { ECX } ] }
106 { fastcall [ { ECX EDX } ] }
110 GENERIC: load-return-reg ( src rep -- )
111 GENERIC: store-return-reg ( dst rep -- )
113 M: stack-params load-return-reg drop EAX swap MOV ;
114 M: stack-params store-return-reg drop EAX MOV ;
116 M: int-rep load-return-reg drop EAX swap MOV ;
117 M: int-rep store-return-reg drop EAX MOV ;
119 M: float-rep load-return-reg drop FLDS ;
120 M: float-rep store-return-reg drop FSTPS ;
122 M: double-rep load-return-reg drop FLDL ;
123 M: double-rep store-return-reg drop FSTPL ;
125 M: x86.32 %prologue ( n -- )
127 0 PUSH rc-absolute-cell rel-this
128 3 cells - decr-stack-reg ;
130 M: x86.32 %prepare-jump
131 pic-tail-reg 0 MOV xt-tail-pic-offset rc-absolute-cell rel-here ;
133 :: call-unbox-func ( src func -- )
134 EAX src tagged-rep %copy
137 func f %alien-invoke ;
139 M:: x86.32 %unbox ( dst src func rep -- )
140 src func call-unbox-func
141 dst rep reg-class-of return-reg rep %copy ;
143 M:: x86.32 %store-long-long-return ( src1 src2 n func -- )
144 src2 EAX = [ src1 src2 XCHG src2 src1 ] [ src1 src2 ] if :> ( src1 src2 )
145 EAX src1 int-rep %copy
146 EDX src2 int-rep %copy ;
148 M:: x86.32 %store-struct-return ( src c-type -- )
149 EAX src int-rep %copy
153 M: stack-params copy-register*
156 { [ dup integer? ] [ EAX swap next-stack@ MOV EAX MOV ] }
157 { [ over integer? ] [ EAX swap MOV param@ EAX MOV ] }
160 M: x86.32 %save-param-reg [ local@ ] 2dip %copy ;
162 : (%box) ( n rep -- )
163 #! If n is f, push the return register onto the stack; we
164 #! are boxing a return value of a C function. If n is an
165 #! integer, push [ESP+n] on the stack; we are boxing a
166 #! parameter being passed to a callback from C.
167 over [ [ local@ ] dip load-return-reg ] [ 2drop ] if ;
169 M:: x86.32 %box ( dst n rep func -- )
171 rep rep-size save-vm-ptr
172 0 stack@ rep store-return-reg
174 dst EAX tagged-rep %copy ;
176 : (%box-long-long) ( n -- )
178 [ EDX swap next-stack@ MOV ]
179 [ EAX swap cell - next-stack@ MOV ] bi
182 M:: x86.32 %box-long-long ( dst n func -- )
188 dst EAX tagged-rep %copy ;
190 M: x86.32 struct-return@ ( n -- operand )
191 [ next-stack@ ] [ stack-frame get params>> local@ ] if* ;
193 M:: x86.32 %box-large-struct ( dst n c-type -- )
194 EDX n struct-return@ LEA
196 4 stack@ c-type heap-size MOV
198 "from_value_struct" f %alien-invoke
199 dst EAX tagged-rep %copy ;
201 M:: x86.32 %box-small-struct ( dst c-type -- )
202 #! Box a <= 8-byte struct returned in EAX:EDX. OS X only.
204 8 stack@ c-type heap-size MOV
207 "from_small_struct" f %alien-invoke
208 dst EAX tagged-rep %copy ;
210 M: x86.32 %begin-callback ( -- )
213 "begin_callback" f %alien-invoke ;
215 M: x86.32 %alien-callback ( quot -- )
216 [ EAX ] dip %load-reference
217 EAX quot-entry-point-offset [+] CALL ;
219 M: x86.32 %end-callback ( -- )
221 "end_callback" f %alien-invoke ;
223 GENERIC: float-function-param ( stack-slot dst src -- )
225 M:: spill-slot float-function-param ( stack-slot dst src -- )
226 ! We can clobber dst here since its going to contain the
228 dst src double-rep %copy
229 stack-slot dst double-rep %copy ;
231 M: register float-function-param
232 nip double-rep %copy ;
234 : float-function-return ( reg -- )
239 M:: x86.32 %unary-float-function ( dst src func -- )
240 ESP -16 [+] dst src float-function-param
242 func "libm" load-library %alien-invoke
243 dst float-function-return ;
245 M:: x86.32 %binary-float-function ( dst src1 src2 func -- )
246 ESP -16 [+] dst src1 float-function-param
247 ESP -8 [+] dst src2 float-function-param
249 func "libm" load-library %alien-invoke
250 dst float-function-return ;
252 : funny-large-struct-return? ( params -- ? )
253 #! MINGW ABI incompatibility disaster
254 [ return>> large-struct? ]
255 [ abi>> mingw eq? os windows? not or ]
258 : stack-arg-size ( params -- n )
260 alien-parameters flatten-c-types
261 [ _ alloc-parameter 2drop ] each
265 M: x86.32 stack-cleanup ( params -- n )
266 #! a) Functions which are stdcall/fastcall/thiscall have to
267 #! clean up the caller's stack frame.
268 #! b) Functions returning large structs on MINGW have to
271 { [ dup abi>> callee-cleanup? ] [ stack-arg-size ] }
272 { [ dup funny-large-struct-return? ] [ drop 4 ] }
276 M: x86.32 %cleanup ( n -- )
277 [ ESP swap SUB ] unless-zero ;
279 M:: x86.32 %call-gc ( gc-roots -- )
281 0 stack@ gc-roots gc-root-offsets %load-reference
282 "inline_gc" f %alien-invoke ;
284 M: x86.32 dummy-stack-params? f ;
286 M: x86.32 dummy-int-params? f ;
288 M: x86.32 dummy-fp-params? f ;
290 M: x86.32 long-long-on-stack? t ;
292 M: x86.32 structs-on-stack? t ;
294 M: x86.32 struct-return-on-stack? os linux? not ;