NASM - The Netwide Assembler
NASM Forum => Programming with NASM => Topic started by: Novice on August 21, 2014, 12:38:42 AM
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Hello Everyone,
I am using NASM ver 2.11.5 to run on Windows 7 64b.
The following when compiled & run is Ok;
mov RAX, 02450252024102E1h
mov qword [0B83E8h], RAX
However the following;
mov qword [0B83E8h], 02450252024102E1h
when compiled generates an error message "warning: signed dword immediate exceeds bounds" although it happily moves the first 4-bytes into memory specified.
Question is; Does it have anything to do with the NASM version I am using (it's under win32/ folder of Download) ? or Moving an 8-byte constant value into memory is simply not allowed ?
Many thanks.
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mov qword [0B83E8h], 02450252024102E1h
Question is; Does it have anything to do with the NASM version I am using (it's under win32/ folder of Download) ?
Nope.
or Moving an 8-byte constant value into memory is simply not allowed ?
Correct. In the x64 world you must move the immediate value to a register before moving the contents to memory.