1 ! Copyright (C) 2005, 2008 Slava Pestov.
2 ! See http://factorcode.org/license.txt for BSD license.
3 USING: accessors alien.c-types arrays cpu.x86.assembler
4 cpu.x86.architecture cpu.x86.intrinsics cpu.x86.sse2
5 cpu.x86.allot cpu.architecture kernel kernel.private math
6 namespaces make sequences compiler.generator
7 compiler.generator.registers compiler.generator.fixup system
8 layouts alien alien.accessors alien.structs slots splitting
12 M: x86.64 ds-reg R14 ;
13 M: x86.64 rs-reg R15 ;
14 M: x86.64 stack-reg RSP ;
15 M: x86.64 stack-save-reg RSI ;
16 M: x86.64 temp-reg-1 RAX ;
17 M: x86.64 temp-reg-2 RCX ;
19 M: temp-reg v>operand drop RBX ;
21 M: int-regs return-reg drop RAX ;
22 M: int-regs vregs drop { RAX RCX RDX RBP RSI RDI R8 R9 R10 R11 R12 R13 } ;
23 M: int-regs param-regs drop { RDI RSI RDX RCX R8 R9 } ;
25 M: float-regs return-reg drop XMM0 ;
29 XMM0 XMM1 XMM2 XMM3 XMM4 XMM5 XMM6 XMM7
30 XMM8 XMM9 XMM10 XMM11 XMM12 XMM13 XMM14 XMM15
33 M: float-regs param-regs
34 drop { XMM0 XMM1 XMM2 XMM3 XMM4 XMM5 XMM6 XMM7 } ;
36 M: x86.64 fixnum>slot@ drop ;
38 M: x86.64 prepare-division CQO ;
40 M: x86.64 load-indirect ( literal reg -- )
41 0 [] MOV rc-relative rel-literal ;
43 M: stack-params %load-param-reg
45 >r R11 swap stack@ MOV
48 M: stack-params %save-param-reg
49 >r stack-frame* + cell + swap r> %load-param-reg ;
51 : with-return-regs ( quot -- )
53 V{ RDX RAX } clone int-regs set
54 V{ XMM1 XMM0 } clone float-regs set
58 ! The ABI for passing structs by value is pretty messed up
59 << "void*" c-type clone "__stack_value" define-primitive-type
60 stack-params "__stack_value" c-type (>>reg-class) >>
62 : struct-types&offset ( struct-type -- pairs )
64 [ type>> ] [ offset>> ] bi 2array
67 : split-struct ( pairs -- seq )
69 [ 8 mod zero? [ t , ] when , ] assoc-each
70 ] { } make { t } split harvest ;
72 : flatten-small-struct ( c-type -- seq )
73 struct-types&offset split-struct [
74 [ c-type c-type-reg-class ] map
75 int-regs swap member? "void*" "double" ? c-type
78 : flatten-large-struct ( c-type -- seq )
80 cell /i "__stack_value" c-type <repetition> ;
82 M: struct-type flatten-value-type ( type -- seq )
89 M: x86.64 %prepare-unbox ( -- )
90 ! First parameter is top of stack
94 M: x86.64 %unbox ( n reg-class func -- )
97 ! Store the return value on the C stack
98 over [ [ return-reg ] keep %save-param-reg ] [ 2drop ] if ;
100 M: x86.64 %unbox-long-long ( n func -- )
101 int-regs swap %unbox ;
103 : %unbox-struct-field ( c-type i -- )
104 ! Alien must be in RDI.
105 RDI swap cells [+] swap reg-class>> {
106 { int-regs [ int-regs get pop swap MOV ] }
107 { double-float-regs [ float-regs get pop swap MOVSD ] }
110 M: x86.64 %unbox-small-struct ( c-type -- )
111 ! Alien must be in RDI.
112 "alien_offset" f %alien-invoke
113 ! Move alien_offset() return value to RDI so that we don't
117 flatten-small-struct [ %unbox-struct-field ] each-index
120 M: x86.64 %unbox-large-struct ( n c-type -- )
123 ! Load destination address
125 ! Load structure size
127 ! Copy the struct to the C stack
128 "to_value_struct" f %alien-invoke ;
130 : load-return-value ( reg-class -- )
131 0 over param-reg swap return-reg
132 2dup eq? [ 2drop ] [ MOV ] if ;
134 M: x86.64 %box ( n reg-class func -- )
136 rot [ 0 swap param-reg ] keep %load-param-reg
138 swap load-return-value
142 M: x86.64 %box-long-long ( n func -- )
145 M: x86.64 struct-small-enough? ( size -- ? )
146 heap-size 2 cells <= ;
148 : box-struct-field@ ( i -- operand ) RSP swap 1+ cells [+] ;
150 : %box-struct-field ( c-type i -- )
151 box-struct-field@ swap reg-class>> {
152 { int-regs [ int-regs get pop MOV ] }
153 { double-float-regs [ float-regs get pop MOVSD ] }
156 M: x86.64 %box-small-struct ( c-type -- )
157 #! Box a <= 16-byte struct.
159 [ flatten-small-struct [ %box-struct-field ] each-index ]
160 [ RDX swap heap-size MOV ] bi
161 RDI 0 box-struct-field@ MOV
162 RSI 1 box-struct-field@ MOV
163 "box_small_struct" f %alien-invoke
166 : struct-return@ ( size n -- n )
167 [ ] [ \ stack-frame get swap - ] ?if ;
169 M: x86.64 %box-large-struct ( n c-type -- )
170 ! Struct size is parameter 2
173 ! Compute destination address
174 swap struct-return@ RDI RSP rot [+] LEA
175 ! Copy the struct from the C stack
176 "box_value_struct" f %alien-invoke ;
178 M: x86.64 %prepare-box-struct ( size -- )
179 ! Compute target address for value struct return
180 RAX RSP rot f struct-return@ [+] LEA
183 M: x86.64 %prepare-var-args RAX RAX XOR ;
185 M: x86.64 %alien-global
186 [ 0 MOV rc-absolute-cell rel-dlsym ] [ dup [] MOV ] bi ;
188 M: x86.64 %alien-invoke
190 rc-absolute-cell rel-dlsym
193 M: x86.64 %prepare-alien-indirect ( -- )
194 "unbox_alien" f %alien-invoke
197 M: x86.64 %alien-indirect ( -- )
200 M: x86.64 %alien-callback ( quot -- )
201 RDI load-indirect "c_to_factor" f %alien-invoke ;
203 M: x86.64 %callback-value ( ctype -- )
204 ! Save top of data stack
206 ! Put former top of data stack in RDI
208 ! Restore data/call/retain stacks
209 "unnest_stacks" f %alien-invoke
210 ! Put former top of data stack in RDI
212 ! Unbox former top of data stack to return registers
215 M: x86.64 %cleanup ( alien-node -- ) drop ;
217 M: x86.64 %unwind ( n -- ) drop %epilogue-later 0 RET ;
219 USE: cpu.x86.intrinsics
221 ! On 64-bit systems, the result of reading 4 bytes from memory
223 \ alien-unsigned-4 small-reg-32 define-unsigned-getter
224 \ set-alien-unsigned-4 small-reg-32 define-setter
226 \ alien-signed-4 small-reg-32 define-signed-getter
227 \ set-alien-signed-4 small-reg-32 define-setter