85 lines
2.2 KiB
Factor
85 lines
2.2 KiB
Factor
USING: help.markup help.syntax math ;
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IN: cpu.x86
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HELP: stack-reg
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{ $values { "reg" "a register symbol" } }
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{ $description
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"Symbol of the machine register that holds the (cpu) stack address."
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} ;
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HELP: ds-reg
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{ $values { "reg" "a register symbol" } }
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{ $description
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"Symbol of the machine register that holds the address to the data stack's location."
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} ;
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HELP: (%inc)
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{ $values { "n" number } { "reg" "a register symbol" } }
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{ $description
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"Emits machine code for increasing or decreasing the given register a number of cell sizes bytes."
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}
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{ $examples
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{ $unchecked-example
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"USING: cpu.x86 make prettyprint ;"
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"[ 8 ECX (%inc) ] B{ } make disassemble"
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"00000000615e5140: 83c140 add ecx, 0x40"
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}
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} ;
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HELP: decr-stack-reg
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{ $values { "n" number } }
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{ $description "Emits an instruction for decrementing the stack register the given number of bytes." } ;
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HELP: load-zone-offset
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{ $values { "nursery-ptr" "a register symbol" } }
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{ $description
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"Emits machine code for loading the address to the nursery into the machine register."
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}
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{ $examples
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{ $unchecked-example
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"USING: cpu.x86 make ;"
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"[ RCX load-zone-offset ] B{ } make disassemble"
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"0000000001b48f80: 498d4d10 lea rcx, [r13+0x10]"
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}
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} ;
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HELP: store-tagged
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{ $values { "dst" "a register symbol" } { "tag" "a builtin class" } }
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{ $description "Tags the register with the tag number for the given class." }
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{ $examples
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{ $unchecked-example
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"USING: cpu.x86 make ;"
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"[ RAX alien store-tagged ] B{ } make disassemble"
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"0000000002275f10: 4883c806 or rax, 0x6"
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}
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} ;
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HELP: copy-register*
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{ $values
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{ "dst" "a register symbol" }
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{ "src" "a register symbol" }
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{ "rep" "a value representation singleton" }
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}
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{ $description
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"Emits machine code for copying from a register to another."
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}
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{ $examples
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{ $unchecked-example
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"USING: cpu.x86 make ;"
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"[ XMM1 XMM2 double-rep copy-register* ] B{ } make disassemble"
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"0000000533c61fe0: 0f28ca movaps xmm1, xmm2"
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}
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} ;
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HELP: %mov-vm-ptr
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{ $values { "reg" "a register symbol" } }
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{ $description
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"Emits machine code for moving the vm pointer to a register." }
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{ $examples
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{ $unchecked-example
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"USING: cpu.x86.64 make ;"
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"[ RAX %mov-vm-ptr ] B{ } make disassemble"
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"0000000002290b30: 4c89e8 mov rax, r13"
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}
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} ;
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