-->![Masm 64 Masm 64](/uploads/1/1/9/7/119759005/803226628.png)
![Masm 64 Masm 64](/uploads/1/1/9/7/119759005/311854093.jpg)
Initializes the program memory model. (32-bit MASM only.)
![Masm 64 Masm 64](/uploads/1/1/9/7/119759005/803226628.png)
Reference material for creating binaries in 64 bit MASM. 22 Posts 6 Topics Last post by Vortex in Moving to Windows x64 on March 28, 2020, 08:58:59 PM 64 bit assembler UASM Assembler Development. Continuing development of the Unified assembler UASM. 3886 Posts 251 Topics. If you wish to develop programs in assembly for modern Windows versions you'll have to use a newer version of MASM and learn how to develop for 32- or 64-bit Windows, the link Jason Evans provided will lead you to newer versions of MASM and has all other information you need for that.
Masm 64 Bit Windows 10
- 64-bit systems allow addressing 264bytes of data in theory, but no current chips allow accessing all 16 exabytes (18,446,744,073,709,551,616 bytes). For example, AMD architecture uses only the lower 48 bits of an address, and bits 48 through 63 must be a copy of bit 47 or the processor raises an exception.
- SOLAR Assembler is a modern multipass macro assembler that can compile 16/32/64 bits code and runs on Windows, Linux, MacOSX and SolarOS Solar Assembler can create portable executables without the usage of a linker. That would be another good choice. Both tools (jWasm & SolAsm) are very good maintained and up to date, I think.
Syntax
.MODELmemory-model ⟦,language-type⟧ ⟦,stack-option⟧
Parameters
memory-model
Required parameter that determines the size of code and data pointers.
Required parameter that determines the size of code and data pointers.
language-type
Optional parameter that sets the calling and naming conventions for procedures and public symbols.
Optional parameter that sets the calling and naming conventions for procedures and public symbols.
Masm 64 Macros
stack-option
Optional parameter.
Optional parameter.
stack-option is not used if memory-model is FLAT.
Specifying NEARSTACK groups the stack segment into a single physical segment (DGROUP) along with data. The stack segment register (SS) is assumed to hold the same address as the data segment register (DS). FARSTACK does not group the stack with DGROUP; thus SS does not equal DS.
Remarks
.MODEL is not used in MASM for x64 (ml64.exe).
The following table lists the possible values for each parameter when targeting 16-bit and 32-bit platforms:
Parameter | 32-bit values | 16-bit values (support for earlier 16-bit development) |
---|---|---|
memory-model | FLAT | TINY, SMALL, COMPACT, MEDIUM, LARGE, HUGE, FLAT |
language-type | C, STDCALL | C, BASIC, FORTRAN, PASCAL, SYSCALL, STDCALL |
stack-option | Not used | NEARSTACK, FARSTACK |
Code
For MASM-related samples, download the Compiler samples from Visual C++ Samples and Related Documentation for Visual Studio 2010.
Masm Download For Windows 10
The following example demonstrates the use of the
.MODEL
directive.Example
![Masm 64 Masm 64](/uploads/1/1/9/7/119759005/311854093.jpg)
See also
Directives Reference
MASM BNF Grammar
MASM BNF Grammar
The MASM32 Website
This is the website for the MASM32 SDK. It contains the main downloadsites around the world, installation technical data, the MASM32 licenceand ralated historical data on the Microsoft assembler MASM.
The MASM32 Forum
Direct link to the MASM32 support forum with extensive technical data in postings,attachments and many very experienced assembler programmers who assist other members as their time allows.
MASM32 Archives
Archiveof file attachments from many different members of the earlier MasmForum that are available to MASM programmers under the same conditionsas attachments in the Masm Forum. Please note that all of the examplesare Copyright (c) software owned by the original author and covered bythe copyright of content by the Masm Forum. Any person may download,use and modify the code for their own purpose without restriction butno form of code collectors, resellers or bundling of these attachments is allowed.
Apache directory listing for 2005 archive
Files from an earlier version of the MASM forum archived in 2005.
Apache directory listing for 2012 archive
Files from the current version of the MASM forum archived in 2012.
Apache directory listing for Winhelp files for 32 bit Windows versions.
Winhelp format help files for 32 bit Windows versions supplied by Borland in 1997.
Download Test Department's low level examples
Before'Test Department' retired he archived his complete collection of lowlevel examples so that the Masm Forum could make them available tofuture members who could benefit from this coding style. These willappeal to the MASM programmer who prefers to code closer to baremnemonics without the use of MASM's pseudo high level notation or theuse of macros. As above the Test Department archive is protected by the copyright of content by the Masm Forum.
Download 'Programming the Windows 95 User Interface'
With special thanks to Nancy Cluts, the original author of this work,permission has been obtained from Microsoft to make this example codeavailable under the 'MICROSOFT LIMITED PUBLIC LICENSE'.The bulk of the examples are written in Microsoft C and translatereasonably easily into MASM notation. Windows operating systems havechanged since Windows 95 but the examples are core Win32 code and theexample generally run correctly on later versions of Windows and thecode is excellent reference for writing modern 32 bit Windowsapplications.
This is the website for the MASM32 SDK. It contains the main downloadsites around the world, installation technical data, the MASM32 licenceand ralated historical data on the Microsoft assembler MASM.
The MASM32 Forum
Direct link to the MASM32 support forum with extensive technical data in postings,attachments and many very experienced assembler programmers who assist other members as their time allows.
MASM32 Archives
Archiveof file attachments from many different members of the earlier MasmForum that are available to MASM programmers under the same conditionsas attachments in the Masm Forum. Please note that all of the examplesare Copyright (c) software owned by the original author and covered bythe copyright of content by the Masm Forum. Any person may download,use and modify the code for their own purpose without restriction butno form of code collectors, resellers or bundling of these attachments is allowed.
Apache directory listing for 2005 archive
Files from an earlier version of the MASM forum archived in 2005.
Apache directory listing for 2012 archive
Files from the current version of the MASM forum archived in 2012.
Apache directory listing for Winhelp files for 32 bit Windows versions.
Winhelp format help files for 32 bit Windows versions supplied by Borland in 1997.
Download Test Department's low level examples
Before'Test Department' retired he archived his complete collection of lowlevel examples so that the Masm Forum could make them available tofuture members who could benefit from this coding style. These willappeal to the MASM programmer who prefers to code closer to baremnemonics without the use of MASM's pseudo high level notation or theuse of macros. As above the Test Department archive is protected by the copyright of content by the Masm Forum.
Download 'Programming the Windows 95 User Interface'
With special thanks to Nancy Cluts, the original author of this work,permission has been obtained from Microsoft to make this example codeavailable under the 'MICROSOFT LIMITED PUBLIC LICENSE'.The bulk of the examples are written in Microsoft C and translatereasonably easily into MASM notation. Windows operating systems havechanged since Windows 95 but the examples are core Win32 code and theexample generally run correctly on later versions of Windows and thecode is excellent reference for writing modern 32 bit Windowsapplications.