35 lines
1.7 KiB
Factor
35 lines
1.7 KiB
Factor
USING: compiler.cfg.instructions cpu.x86 help.markup help.syntax layouts math ;
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IN: compiler.cfg.stack-frame
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HELP: stack-frame
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{ $class-description "Counts in bytes of the various sizes of the blocks of the stack frame. The stack frame is organized in the following fashion, from bottom to top:"
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{ $list
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"Parameter space: space for parameters to FFI functions "
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"Allocation area: space for local allocations."
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"Spill area: space for register spills."
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{ "Reserved stack space: only applicable on Windows x86.64. See " { $link reserved-stack-space } "." }
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{ "One final " { $link cell } " of padding." }
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}
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"The stack frame is also aligned to a 16 byte boundary. It has the following slots:"
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{ $slots
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{ "total-size" { "Total size of the stack frame." } }
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{ "params" { "Reserved parameter space." } }
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{ "allot-area-base" { "Base offset of the allocation area." } }
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{ "allot-area-size" { "Number of bytes requires for the allocation area." } }
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{ "allot-area-align" { "This slot is always at least " { $link cell } " bytes." } }
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{ "spill-area-base" { "Base offset for the spill area." } }
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{ "spill-area-size" { "Number of bytes requires for all spill slots." } }
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{ "spill-area-align" { "This slot is always at least " { $link cell } " bytes." } }
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}
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}
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{ $see-also align-stack } ;
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HELP: (stack-frame-size)
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{ $values { "stack-frame" stack-frame } { "n" integer } }
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{ $description "Base stack frame size, without padding and alignment. If the size is zero, then no " { $link ##epilogue } " and " { $link ##prologue } " needs to be emitted for the word." } ;
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ARTICLE: "compiler.cfg.stack-frame" "Stack frames"
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"This vocab contains definitions for constructing stack frames." ;
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ABOUT: "compiler.cfg.stack-frame"
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