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 make
6 words compiler.constants compiler.codegen.fixup
7 compiler.cfg.instructions compiler.cfg.builder
8 compiler.cfg.builder.alien.boxing compiler.cfg.intrinsics
9 compiler.cfg.stack-frame cpu.x86.assembler
10 cpu.x86.assembler.operands cpu.x86 cpu.architecture vm vocabs ;
11 FROM: layouts => cell ;
14 : x86-float-regs ( -- seq )
16 { XMM0 XMM1 XMM2 XMM3 XMM4 XMM5 XMM6 XMM7 }
17 { ST0 ST1 ST2 ST3 ST4 ST5 ST6 }
20 M: x86.32 machine-registers
21 { int-regs { EAX ECX EDX EBP EBX } }
22 float-regs x86-float-regs 2array
25 M: x86.32 ds-reg ESI ;
26 M: x86.32 rs-reg EDI ;
27 M: x86.32 stack-reg ESP ;
28 M: x86.32 frame-reg EBP ;
30 M: x86.32 immediate-comparand? ( obj -- ? ) drop t ;
32 M:: x86.32 %load-vector ( dst val rep -- )
33 dst 0 [] rep copy-memory* val rc-absolute rel-binary-literal ;
35 M: x86.32 %mov-vm-ptr ( reg -- )
36 0 MOV 0 rc-absolute-cell rel-vm ;
38 M: x86.32 %vm-field ( dst field -- )
39 [ 0 [] MOV ] dip rc-absolute-cell rel-vm ;
41 M: x86.32 %set-vm-field ( dst field -- )
42 [ 0 [] swap MOV ] dip rc-absolute-cell rel-vm ;
44 M: x86.32 %vm-field-ptr ( dst field -- )
45 [ 0 MOV ] dip rc-absolute-cell rel-vm ;
48 drop HEX: ffffffff [+] card-mark <byte> MOV
50 rc-absolute-cell rel-cards-offset
54 drop HEX: ffffffff [+] card-mark <byte> MOV
56 rc-absolute-cell rel-decks-offset
59 M: x86.32 pic-tail-reg EDX ;
61 M: x86.32 reserved-stack-space 0 ;
63 M: x86.32 vm-stack-space 16 ;
65 : save-vm-ptr ( n -- )
66 stack@ 0 MOV 0 rc-absolute-cell rel-vm ;
68 M: x86.32 return-struct-in-registers? ( c-type -- ? )
70 [ return-in-registers?>> ]
71 [ heap-size { 1 2 4 8 } member? ] bi
72 os { linux netbsd solaris } member? not
75 ! On x86, parameters are usually never passed in registers,
76 ! except with Microsoft's "thiscall" and "fastcall" abis
79 { thiscall [ { { int-regs { ECX } } { float-regs { } } } ] }
80 { fastcall [ { { int-regs { ECX EDX } } { float-regs { } } } ] }
81 [ drop { { int-regs { } } { float-regs { } } } ]
84 ! Need a fake return-reg for floats
87 { int-regs { EAX EDX } }
88 { float-regs { ST0 } }
91 M: x86.32 %prologue ( n -- )
93 0 PUSH rc-absolute-cell rel-this
94 3 cells - decr-stack-reg ;
96 M: x86.32 %prepare-jump
97 pic-tail-reg 0 MOV xt-tail-pic-offset rc-absolute-cell rel-here ;
99 :: load-float-return ( dst x87-insn rep -- )
102 ESP [] x87-insn execute
106 dst ?spill-slot x87-insn execute
109 M: x86.32 %load-reg-param ( dst reg rep -- )
111 { int-rep [ int-rep %copy ] }
112 { float-rep [ drop \ FSTPS float-rep load-float-return ] }
113 { double-rep [ drop \ FSTPL double-rep load-float-return ] }
116 :: store-float-return ( src x87-insn rep -- )
120 ESP [] x87-insn execute
123 src ?spill-slot x87-insn execute
126 M: x86.32 %store-reg-param ( src reg rep -- )
128 { int-rep [ swap int-rep %copy ] }
129 { float-rep [ drop \ FLDS float-rep store-float-return ] }
130 { double-rep [ drop \ FLDL double-rep store-float-return ] }
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 %load-return ;
143 M:: x86.32 %unbox-long-long ( src out func -- )
144 EAX src int-rep %copy
146 EAX out int-rep %copy
149 func f %alien-invoke ;
151 M:: x86.32 %box ( dst src func rep -- )
152 rep rep-size save-vm-ptr
153 src rep %store-return
154 0 stack@ rep %load-return
156 dst EAX tagged-rep %copy ;
158 M:: x86.32 %box-long-long ( dst src1 src2 func -- )
160 EAX src1 int-rep %copy
161 0 stack@ EAX int-rep %copy
162 EAX src2 int-rep %copy
163 4 stack@ EAX int-rep %copy
165 dst EAX tagged-rep %copy ;
167 M:: x86.32 %allot-byte-array ( dst size -- )
170 "allot_byte_array" f %alien-invoke
171 dst EAX tagged-rep %copy ;
173 M: x86.32 %alien-invoke 0 CALL rc-relative rel-dlsym ;
175 M: x86.32 %begin-callback ( -- )
178 "begin_callback" f %alien-invoke ;
180 M: x86.32 %alien-callback ( quot -- )
181 [ EAX ] dip %load-reference
182 EAX quot-entry-point-offset [+] CALL ;
184 M: x86.32 %end-callback ( -- )
186 "end_callback" f %alien-invoke ;
188 GENERIC: float-function-param ( n dst src -- )
190 M:: spill-slot float-function-param ( n dst src -- )
191 ! We can clobber dst here since its going to contain the
193 dst src double-rep %copy
194 dst n double-rep %store-stack-param ;
196 M:: register float-function-param ( n dst src -- )
197 src n double-rep %store-stack-param ;
199 M:: x86.32 %unary-float-function ( dst src func -- )
200 0 dst src float-function-param
201 func "libm" load-library %alien-invoke
202 dst double-rep %load-return ;
204 M:: x86.32 %binary-float-function ( dst src1 src2 func -- )
205 0 dst src1 float-function-param
206 8 dst src2 float-function-param
207 func "libm" load-library %alien-invoke
208 dst double-rep %load-return ;
210 : funny-large-struct-return? ( return abi -- ? )
211 #! MINGW ABI incompatibility disaster
212 [ large-struct? ] [ mingw eq? os windows? not or ] bi* and ;
214 M:: x86.32 stack-cleanup ( stack-size return abi -- n )
215 #! a) Functions which are stdcall/fastcall/thiscall have to
216 #! clean up the caller's stack frame.
217 #! b) Functions returning large structs on MINGW have to
220 { [ abi callee-cleanup? ] [ stack-size ] }
221 { [ return abi funny-large-struct-return? ] [ 4 ] }
225 M: x86.32 %cleanup ( n -- )
226 [ ESP swap SUB ] unless-zero ;
228 M: x86.32 dummy-stack-params? f ;
230 M: x86.32 dummy-int-params? f ;
232 M: x86.32 dummy-fp-params? f ;
234 M: x86.32 long-long-on-stack? t ;
236 M: x86.32 float-on-stack? t ;
238 M: x86.32 flatten-struct-type
239 call-next-method [ first t 2array ] map ;
241 M: x86.32 struct-return-on-stack? os linux? not ;