65 lines
1.8 KiB
Factor
65 lines
1.8 KiB
Factor
! Copyright (C) 2008 Slava Pestov.
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! See http://factorcode.org/license.txt for BSD license.
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USING: accessors arrays sequences math splitting make assocs kernel
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layouts system alien.c-types cpu.architecture
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cpu.x86.assembler cpu.x86.assembler.operands cpu.x86 compiler.codegen
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compiler.cfg.registers ;
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QUALIFIED: alien.structs
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QUALIFIED: classes.struct
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IN: cpu.x86.64.unix
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M: int-regs param-regs
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drop { RDI RSI RDX RCX R8 R9 } ;
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M: float-regs param-regs
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drop { XMM0 XMM1 XMM2 XMM3 XMM4 XMM5 XMM6 XMM7 } ;
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M: x86.64 reserved-area-size 0 ;
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! The ABI for passing structs by value is pretty messed up
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<< "void*" c-type clone "__stack_value" define-primitive-type
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stack-params "__stack_value" c-type (>>rep) >>
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: struct-types&offset ( struct-type -- pairs )
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fields>> [
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[ type>> ] [ offset>> ] bi 2array
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] map ;
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: split-struct ( pairs -- seq )
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[
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[ 8 mod zero? [ t , ] when , ] assoc-each
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] { } make { t } split harvest ;
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: flatten-small-struct ( c-type -- seq )
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struct-types&offset split-struct [
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[ c-type c-type-rep reg-class-of ] map
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int-regs swap member? "void*" "double" ? c-type
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] map ;
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: flatten-large-struct ( c-type -- seq )
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heap-size cell align
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cell /i "__stack_value" c-type <repetition> ;
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: flatten-struct ( c-type -- seq )
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dup heap-size 16 > [
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flatten-large-struct
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] [
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flatten-small-struct
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] if ;
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M: alien.structs:struct-type flatten-value-type ( type -- seq )
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flatten-struct ;
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M: classes.struct:struct-c-type flatten-value-type ( type -- seq )
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flatten-struct ;
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M: x86.64 return-struct-in-registers? ( c-type -- ? )
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heap-size 2 cells <= ;
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M: x86.64 dummy-stack-params? f ;
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M: x86.64 dummy-int-params? f ;
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M: x86.64 dummy-fp-params? f ;
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M: x86.64 temp-reg R8 ;
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