Article: Q24953
Product(s): Microsoft Macro Assembler
Version(s): 1.25,1.27,3.0x,4.0,5.0,5.1
Operating System(s):
Keyword(s):
Last Modified: 06-MAY-2001
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The information in this article applies to:
- Microsoft Macro Assembler (MASM), versions 1.25, 1.27, 3.0x, 4.0, 5.0, 5.1
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SUMMARY
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Phase errors indicate that a relative address of a label changed between pass 1
and pass 2 of the assembly process. They usually are caused by improper forward
references to labels. During pass 1, the assembler will have to make assumptions
(e.g. it might assume a near jump during pass 1 if the location of a label is
not known). During pass 2, the assembler may have to change those assumptions
(e.g. now it knows that the jump is to a far label). If this involves changing
the size of an instruction, that difference can cause a phase error.
To examine the assumptions made by the assembler on pass 1, use the /D option to
get a pass 1 listing.
MORE INFORMATION
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Phase errors can usually be prevented by using segment overrides or explicit
type specification, as shown in the following examples:
jmp dword ptr far_label ;jump to far label
mov ax, word ptr label
Additional query words: 1.25 1.27 3.0x 4.00 5.00 5.10
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Keywords :
Technology : kbMASMsearch kbAudDeveloper kbMASM510 kbMASM125 kbMASM127 kbMASM30xSearch kbMASM400 kbMASM500
Version : :1.25,1.27,3.0x,4.0,5.0,5.1
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