Slide 5.13: Calculating data sizes and EQU directive Slide 6.1: Data transfer instructions Home |
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TEXTEQU
Directive
The TEXTEQU directive is very similar to EQU . It creates a text macro.
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EQU
directive, a symbol defined with TEXTEQU
can be redefined later in the program.
name = expression |
name EQU expression |
name TEXTEQU %constExpr |
Year = 2002 .data Year = 2003 .code Year = 2004 mov eax, Year call WriteInt |
Year EQU 2002 .data Year EQU 2003 .code Year EQU 2004 mov eax, Year call WriteInt |
Year TEXTEQU %2002 .data Year TEXTEQU %2003 .code Year TEXTEQU %2004 mov eax, Year call WriteInt |
Output | Output | Output |
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String Size byname TEXTEQU <text> |
Array Size byname TEXTEQU textmacro |
setEAX TEXTEQU .data string BYTE 'A', 'B', 'C', 'D', 0 len EQU ($ - string) .code setEAX call WriteInt |
.data array WORD 10, 20, 30, 40, 50 len = ($ - array) / 2 .code setEAX EQU setupEAX TEXTEQU setEAX setupEAX call WriteInt |
Output | Output |
5 | 5 |