Assembles and links one or more assembly-language source files. The command-line options are case sensitive.
The options listed in the following table.
| /[0|1|..|10][p] | Set CPU: 0=8086 (default), 1=80186, 2=80286, 3=80386, 4=80486, 5=Pentium,6=PPro,7=P2,8=P3,9=P4,10=x86-64. [p] allows privileged instructions. |
| /assert | Generate .assert(code). Same as .assert:on. |
| /autostack | [-auto] [[.win64:[NO]AUTO]] Calculate required stack space for arguments. |
| /bin | Generate plain binary file. |
| /Cs | Push user registers before stack-frame is created in a proc. |
| /coff | Generate COFF format object file. |
| /Cp | Preserves case of all user identifiers. |
| /Cu | Maps all identifiers to upper case (default). |
| /cui | Link switch used with /pe -- subsystem:console (default). |
| /Cx | Preserves case in public and extern symbols. |
| /Dsymbol[[=value]] | Defines a text macro with the given name. If value is missing, it is blank. Multiple tokens separated by spaces must be enclosed in quotation marks. |
| /enumber | Set error limit number. |
| /elf | Generate 32-bit ELF object file. |
| /elf64 | Generate 64-bit ELF object file. |
| /EP | Generates a preprocessed source listing (sent to STDOUT). See /Sf. |
| /eq | Don't display error messages. |
| /Fd[file] | Write import definition file. |
| /Fifile | Force file to be included. |
| /Fl[[filename]] | Generates an assembled code listing. See /Sf. |
| /Fofilename | Names an object file. |
| /Fwfilename | Set errors file name. |
| /FPi | Generates emulator fix-ups for floating-point arithmetic (mixed language only). |
| /FPi87 | 80x87 instructions (default). |
| /fpc | Disallow floating-point instructions. |
| /fpn | Set FPU: 0=8087, 2=80287, 3=80387. |
| /Gc | Specifies use of FORTRAN- or Pascal-style function calling and naming conventions. Same as OPTION LANGUAGE:PASCAL. |
| /Gd | Specifies use of C-style function calling and naming conventions. Same as OPTION LANGUAGE:C. |
| /gui | Link switch used with /pe -- subsystem:windows. |
| /Gv | Specifies use of VECTORCALL-style function calling and naming conventions. |
| /Gz | Specifies use of STDCALL-style function calling and naming conventions. Same as OPTION LANGUAGE:STDCALL. |
| /homeparams | [-home] [[.win64:[NO]SAVE]] Forces parameters passed in registers to be written to their locations on the stack upon function entry. |
| /Ipathname | Sets path for include file. |
| /m[t|s|c|m|l|h|f] | Set memory model. |
| /mz | Generate DOS MZ binary file. |
| /ncname | Set class name of code segment. |
| /ndname | Set name of data segment. |
| /nmname | Set name of module. |
| /ntname | Set name of text segment. |
| /nologo | Suppresses messages for successful assembly. |
| /omf | Generates object module file format (OMF) type of object module. |
| /pe | Generate PE binary file, 32/64-bit. |
| /pf | Preserve Flags (Epilogue/Invoke). |
| /q | Suppress copyright message. |
| /r | Recurse subdirectories with use of wild args. |
| /Sa | Turns on listing of all available information. |
| /safeseh | Marks the object as either containing no exception handlers or containing exception handlers that are all declared with SAFESEH. |
| /Sf | Adds first-pass listing to listing file. |
| /Sg | Turns on listing of assembly-generated code. |
| /Sn | Turns off symbol table when producing a listing. |
| /Sp[n] | Set segment alignment. |
| /stackalign | [-stac] [[.win64:[NO]ALIGN]] Align stack variables to 16-byte. |
| /swc | Specifies use of C-style .SWITCH convention (default). |
| /swn | No jump-table creation in .SWITCH. |
| /swp | Specifies use of Pascal-style .SWITCH convention (auto break). |
| /swr | Allows use of register [E]AX or R11 in .SWITCH code. |
| /swt | Allows use of jump-table creation in .SWITCH code (default). |
| /Sx | Turns on false conditionals in listing. |
| /w | Same as /W0. |
| /Wlevel | Sets the warning level, where level = 0, 1, 2, or 3. |
| /win64 | Generate 64-bit COFF object. |
| /ws[CodePage] | Store quoted strings as Unicode. See OPTION WSTRING. |
| /WX | Returns an error code if warnings are generated. |
| /X | Ignore INCLUDE environment path. |
| /Xc | Disable Asmc extensions. |
| /zcw | No decoration for C symbols. |
| /Zd | Generates line-number information in object file. |
| /Zf | Make all symbols public. |
| /zf[0|1] | Set FASTCALL type: MS/OW. |
| /Zg | Generate code to match Masm. |
| /Zi[0|1|2|3] | Add symbolic debug info. |
| /zlc | No OMF records of data in code. |
| /zld | No OMF records of far call. |
| /zlf | Suppress items in COFF: No file entry. |
| /zlp | Suppress items in COFF: No static procs. |
| /zls | Suppress items in COFF: No section aux entry. |
| /Zm | Enable MASM 5.10 compatibility. |
| /Zne | Disable non Masm extensions. |
| /Zp[[alignment]] | Packs structures on the specified byte boundary. |
| /Zs | Perform syntax check only. |
| /zt<0|1|2> | Set STDCALL decoration. |
| /Zv8 | Enable Masm v8+ PROC visibility. |
| /zze | No export symbol decoration. |
| /zzs | Store name of start address. |
The name of the file.
