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 compiler.cfg.builder.alien compiler.cfg.registers ;
10 2drop { RDI RSI RDX RCX R8 R9 } ;
12 M: float-regs param-regs
13 2drop { XMM0 XMM1 XMM2 XMM3 XMM4 XMM5 XMM6 XMM7 } ;
15 M: x86.64 reserved-stack-space 0 ;
17 : struct-types&offset ( struct-type -- pairs )
19 [ type>> ] [ offset>> ] bi 2array
22 : split-struct ( pairs -- seq )
24 [ 8 mod zero? [ t , ] when , ] assoc-each
25 ] { } make { t } split harvest ;
27 : flatten-small-struct ( c-type -- seq )
28 struct-types&offset split-struct [
29 [ c-type c-type-rep reg-class-of ] map
30 int-regs swap member? int-rep double-rep ?
34 : flatten-large-struct ( c-type -- seq )
35 stack-size cell /i { int-rep t } <repetition> ;
37 M: x86.64 flatten-struct-type ( c-type -- seq )
39 [ flatten-large-struct ]
40 [ flatten-small-struct ] if ;
42 M: x86.64 return-struct-in-registers? ( c-type -- ? )
43 heap-size 2 cells <= ;
45 M: x86.64 dummy-stack-params? f ;
47 M: x86.64 dummy-int-params? f ;
49 M: x86.64 dummy-fp-params? f ;
51 M: x86.64 temp-reg R8 ;