43 lines
1.5 KiB
Factor
43 lines
1.5 KiB
Factor
USING: cpu.x86.assembler.operands.private help.markup help.syntax math ;
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IN: cpu.x86.assembler.operands
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HELP: indirect
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{ $class-description "Tuple that represents an indirect addressing operand. It has the following slots:"
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{ $table
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{ { $slot "index" } { "Register for the index value. It must not be " { $link ESP } " or " { $link RSP } "." } }
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{ { $slot "displacement" } { "An integer offset." } }
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}
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} ;
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HELP: [RIP+]
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{ $values { "displacement" number } { "indirect" indirect } }
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{ $description "Creates an indirect operand relative to the RIP register." }
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{ $examples
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{ $unchecked-example
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"USING: cpu.x86.assembler cpu.x86.assembler.operands make tools.disassembler ;"
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"[ 0x1234 [RIP+] EAX MOV ] B{ } make disassemble"
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"00000000015cef50: 890534120000 mov [rip+0x1234], eax"
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}
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} ;
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HELP: []
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{ $values { "base/displacement" "register or an integer" } { "indirect" indirect } }
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{ $description "Creates an indirect operand from a given address or " { $link register } "." } ;
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HELP: n-bit-version-of
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{ $values { "register" register } { "n" integer } { "register'" register } }
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{ $description "Returns a less wide version of the given register." } ;
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ARTICLE: "cpu.x86.assembler.operands" "CPU x86 registers and memory operands"
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"Indirect operand constructors for various addressing formats:"
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{ $subsections [] [RIP+] [+] [++] [+*2+] [+*4+] [+*8+] }
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"Register correspondences:"
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{ $subsections
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8-bit-version-of
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16-bit-version-of
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32-bit-version-of
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64-bit-version-of
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n-bit-version-of
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native-version-of
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} ;
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