1 ! Copyright (C) 2008, 2010 Slava Pestov.
2 ! See http://factorcode.org/license.txt for BSD license.
3 USING: accessors arrays sequences math splitting make assocs
4 kernel layouts system alien.c-types classes.struct
5 cpu.architecture cpu.x86.assembler cpu.x86.assembler.operands
6 cpu.x86 cpu.x86.64 compiler.cfg.builder.alien
7 compiler.cfg.builder.alien.boxing compiler.cfg.registers ;
12 { int-regs { RDI RSI RDX RCX R8 R9 } }
13 { float-regs { XMM0 XMM1 XMM2 XMM3 XMM4 XMM5 XMM6 XMM7 } }
16 M: x86.64 reserved-stack-space 0 ;
18 : struct-types&offset ( struct-type -- pairs )
20 [ type>> ] [ offset>> ] bi 2array
23 : split-struct ( pairs -- seq )
25 [ 8 mod zero? [ t , ] when , ] assoc-each
26 ] { } make { t } split harvest ;
28 : flatten-small-struct ( c-type -- seq )
29 struct-types&offset split-struct [
30 [ c-type c-type-rep reg-class-of ] map
31 int-regs swap member? int-rep double-rep ?
35 M: x86.64 flatten-struct-type ( c-type -- seq )
37 [ flatten-small-struct ] [ call-next-method [ first t f 3array ] map ] if ;
39 M: x86.64 return-struct-in-registers? ( c-type -- ? )
40 heap-size 2 cells <= ;
42 M: x86.64 dummy-stack-params? f ;
44 M: x86.64 dummy-int-params? f ;
46 M: x86.64 dummy-fp-params? f ;
48 M: x86.64 %prepare-var-args RAX RAX XOR ;