%write-barrier ( src slot scale tag temp1 temp2 -- )
CPU architecture description model

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Next:	%spill ( src rep dst -- )

Vocabulary
cpu.architecture

Inputs

src	a register symbol
slot	a register symbol
scale	an integer
tag	an integer
temp1	a register symbol
temp2	a register symbol

Outputs
None

Word description
Generates code for the ##write-barrier instruction.

Examples

USING: cpu.architecture make tools.disassembler ; init-relocation [ RAX RBX 3 -14 RCX RDX %write-barrier ] B{ } make disassemble 000000000143f960: 488d4cd80e lea rcx, [rax+rbx*8+0xe] 000000000143f965: 48c1e908 shr rcx, 0x8 000000000143f969: 48ba0000000000000000 mov rdx, 0x0 000000000143f973: 48c60411c0 mov byte [rcx+rdx], 0xc0 000000000143f978: 48c1e90a shr rcx, 0xa 000000000143f97c: 48ba0000000000000000 mov rdx, 0x0
000000000143f986: 48c60411c0 mov byte [rcx+rdx], 0xc0

Definition

USING: system ;

IN: cpu.architecture

HOOK: %write-barrier cpu ( src slot scale tag temp1 temp2 -- )

Methods

USING: cpu.architecture generalizations system ;

M: arm.64 %write-barrier 6 ndrop ;


USING: cpu.architecture cpu.x86 cpu.x86.assembler system ;

M:: x86 %write-barrier ( src slot scale tag temp1 temp2 -- )
    temp1 src slot scale tag (%slot) LEA
    temp1 temp2 (%write-barrier) ;