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0

I want to do assembly programming in Linux using NASM (example). But, I want to avoid installing Linux on my machine. Rather, I have a 64-bit Win7 machine in which Cygwin is installed.

The following is my test program:

section .data
 text1 db "What is your name?"
 text2 db "Hello "

section .bss
 name resb 30

section .text
 global start

start:
 ; display the prompt
 mov rax, 1 ; specify std out
 mov rdi, 1 ; specify write opeartion
 mov rsi, text1 ; load the address of the variable
 mov rdx, 19 ; write sizeof(text1) == 19 bytes
 syscall ; tell the processor to accomplish the task

 ; take input from KB
 mov rax, 0 ; specify std in
 mov rdi, 0 ; specify read operation
 mov rsi, name ; load the address of the variable
 mov rdx, 30 ; read sizeof(name) == 30 bytes
 syscall ; tell the processor to accomplish the task

 ; display "Hello "
 mov rax, 1 ; specify std out
 mov rdi, 1 ; specify write opeartion
 mov rsi, text2 ; load the address of the variable
 mov rdx, 7 ; write sizeof(text2) == 7 bytes
 syscall ; tell the processor to accomplish the task

 ; display 'name'
 mov rax, 1 ; specify std out
 mov rdi, 1 ; specify write opeartion
 mov rsi, name ; load the address of the variable
 mov rdx, 30 ; write sizeof(name) == 30 bytes
 syscall ; tell the processor to accomplish the task

 ; terminate program
 mov rax, 60 ; specify program termination
 mov rdi, 0 ; return without error
 syscall

The following is my assembly command and output:

Acer@Acer-PC ~
$ nasm -f elf64 name_io.asm -o name_io.o

Acer@Acer-PC ~
$ ld name_io.o -o name_io.exe

Acer@Acer-PC ~
$ ./name_io
Illegal instruction

Acer@Acer-PC ~
$

The source code is being assembled, but it is not executing.

What can I do to properly assemble and run a Linux-assembly program in Cygwin+Windows?

windows assembly cygwin x86-64 nasm

share|improve this question

edited Mar 25 at 23:37

Peter Cordes

147k2121 gold badges233233 silver badges377377 bronze badges

asked Mar 25 at 22:26

user366312user366312

4,0884747 gold badges162162 silver badges321321 bronze badges

• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  You created a 64 bit program all right, but the code you used is for linux. That will not work on windows. cygwin does not emulate syscall. You need to use the POSIX functions instead.
  
  – Jester
  Mar 25 at 22:33
  
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Or use Windows Subsystem for Linux to get a Windows kernel layer that supports x86-64 Linux system calls. IDK if you can install a bare-bones version of this that provides just the kernel side without much or any user-space.
  
  – Peter Cordes
  Mar 25 at 23:37
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Possible duplicate of Assembly Syscalls in 64-bit Windows but it doesn't fit perfectly, the answer doesn't directly address cygwin only emulating a POSIX environment via library function calls, definitely not Linux system calls.
  
  – Peter Cordes
  Mar 26 at 0:03
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Windows 7 doesn't have WSL.
  
  – Michael Petch
  Mar 26 at 0:12
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  You could install a Linux VM, e.g. in VirtualBox (or VMWare or Parallels). That is quite easy and they often come pre-packaged. Just download and start with VirtualBox.
  
  – Rudy Velthuis
  Mar 27 at 10:20
  

  
  
  
  

add a comment | 

0

I want to do assembly programming in Linux using NASM (example). But, I want to avoid installing Linux on my machine. Rather, I have a 64-bit Win7 machine in which Cygwin is installed.

The following is my test program:

section .data
 text1 db "What is your name?"
 text2 db "Hello "

section .bss
 name resb 30

section .text
 global start

start:
 ; display the prompt
 mov rax, 1 ; specify std out
 mov rdi, 1 ; specify write opeartion
 mov rsi, text1 ; load the address of the variable
 mov rdx, 19 ; write sizeof(text1) == 19 bytes
 syscall ; tell the processor to accomplish the task

 ; take input from KB
 mov rax, 0 ; specify std in
 mov rdi, 0 ; specify read operation
 mov rsi, name ; load the address of the variable
 mov rdx, 30 ; read sizeof(name) == 30 bytes
 syscall ; tell the processor to accomplish the task

 ; display "Hello "
 mov rax, 1 ; specify std out
 mov rdi, 1 ; specify write opeartion
 mov rsi, text2 ; load the address of the variable
 mov rdx, 7 ; write sizeof(text2) == 7 bytes
 syscall ; tell the processor to accomplish the task

 ; display 'name'
 mov rax, 1 ; specify std out
 mov rdi, 1 ; specify write opeartion
 mov rsi, name ; load the address of the variable
 mov rdx, 30 ; write sizeof(name) == 30 bytes
 syscall ; tell the processor to accomplish the task

 ; terminate program
 mov rax, 60 ; specify program termination
 mov rdi, 0 ; return without error
 syscall

The following is my assembly command and output:

Acer@Acer-PC ~
$ nasm -f elf64 name_io.asm -o name_io.o

Acer@Acer-PC ~
$ ld name_io.o -o name_io.exe

Acer@Acer-PC ~
$ ./name_io
Illegal instruction

Acer@Acer-PC ~
$

The source code is being assembled, but it is not executing.

What can I do to properly assemble and run a Linux-assembly program in Cygwin+Windows?

windows assembly cygwin x86-64 nasm

share|improve this question

edited Mar 25 at 23:37

Peter Cordes

147k2121 gold badges233233 silver badges377377 bronze badges

asked Mar 25 at 22:26

user366312user366312

4,0884747 gold badges162162 silver badges321321 bronze badges

• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  You created a 64 bit program all right, but the code you used is for linux. That will not work on windows. cygwin does not emulate syscall. You need to use the POSIX functions instead.
  
  – Jester
  Mar 25 at 22:33
  
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Or use Windows Subsystem for Linux to get a Windows kernel layer that supports x86-64 Linux system calls. IDK if you can install a bare-bones version of this that provides just the kernel side without much or any user-space.
  
  – Peter Cordes
  Mar 25 at 23:37
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Possible duplicate of Assembly Syscalls in 64-bit Windows but it doesn't fit perfectly, the answer doesn't directly address cygwin only emulating a POSIX environment via library function calls, definitely not Linux system calls.
  
  – Peter Cordes
  Mar 26 at 0:03
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Windows 7 doesn't have WSL.
  
  – Michael Petch
  Mar 26 at 0:12
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  You could install a Linux VM, e.g. in VirtualBox (or VMWare or Parallels). That is quite easy and they often come pre-packaged. Just download and start with VirtualBox.
  
  – Rudy Velthuis
  Mar 27 at 10:20
  

  
  
  
  

add a comment | 

I want to do assembly programming in Linux using NASM (example). But, I want to avoid installing Linux on my machine. Rather, I have a 64-bit Win7 machine in which Cygwin is installed.

The following is my test program:

section .data
 text1 db "What is your name?"
 text2 db "Hello "

section .bss
 name resb 30

section .text
 global start

start:
 ; display the prompt
 mov rax, 1 ; specify std out
 mov rdi, 1 ; specify write opeartion
 mov rsi, text1 ; load the address of the variable
 mov rdx, 19 ; write sizeof(text1) == 19 bytes
 syscall ; tell the processor to accomplish the task

 ; take input from KB
 mov rax, 0 ; specify std in
 mov rdi, 0 ; specify read operation
 mov rsi, name ; load the address of the variable
 mov rdx, 30 ; read sizeof(name) == 30 bytes
 syscall ; tell the processor to accomplish the task

 ; display "Hello "
 mov rax, 1 ; specify std out
 mov rdi, 1 ; specify write opeartion
 mov rsi, text2 ; load the address of the variable
 mov rdx, 7 ; write sizeof(text2) == 7 bytes
 syscall ; tell the processor to accomplish the task

 ; display 'name'
 mov rax, 1 ; specify std out
 mov rdi, 1 ; specify write opeartion
 mov rsi, name ; load the address of the variable
 mov rdx, 30 ; write sizeof(name) == 30 bytes
 syscall ; tell the processor to accomplish the task

 ; terminate program
 mov rax, 60 ; specify program termination
 mov rdi, 0 ; return without error
 syscall

The following is my assembly command and output:

Acer@Acer-PC ~
$ nasm -f elf64 name_io.asm -o name_io.o

Acer@Acer-PC ~
$ ld name_io.o -o name_io.exe

Acer@Acer-PC ~
$ ./name_io
Illegal instruction

Acer@Acer-PC ~
$

The source code is being assembled, but it is not executing.

What can I do to properly assemble and run a Linux-assembly program in Cygwin+Windows?

windows assembly cygwin x86-64 nasm

share|improve this question

edited Mar 25 at 23:37

Peter Cordes

147k2121 gold badges233233 silver badges377377 bronze badges

asked Mar 25 at 22:26

user366312user366312

4,0884747 gold badges162162 silver badges321321 bronze badges

section .data
 text1 db "What is your name?"
 text2 db "Hello "

section .bss
 name resb 30

section .text
 global start

start:
 ; display the prompt
 mov rax, 1 ; specify std out
 mov rdi, 1 ; specify write opeartion
 mov rsi, text1 ; load the address of the variable
 mov rdx, 19 ; write sizeof(text1) == 19 bytes
 syscall ; tell the processor to accomplish the task

 ; take input from KB
 mov rax, 0 ; specify std in
 mov rdi, 0 ; specify read operation
 mov rsi, name ; load the address of the variable
 mov rdx, 30 ; read sizeof(name) == 30 bytes
 syscall ; tell the processor to accomplish the task

 ; display "Hello "
 mov rax, 1 ; specify std out
 mov rdi, 1 ; specify write opeartion
 mov rsi, text2 ; load the address of the variable
 mov rdx, 7 ; write sizeof(text2) == 7 bytes
 syscall ; tell the processor to accomplish the task

 ; display 'name'
 mov rax, 1 ; specify std out
 mov rdi, 1 ; specify write opeartion
 mov rsi, name ; load the address of the variable
 mov rdx, 30 ; write sizeof(name) == 30 bytes
 syscall ; tell the processor to accomplish the task

 ; terminate program
 mov rax, 60 ; specify program termination
 mov rdi, 0 ; return without error
 syscall

Acer@Acer-PC ~
$ nasm -f elf64 name_io.asm -o name_io.o

Acer@Acer-PC ~
$ ld name_io.o -o name_io.exe

Acer@Acer-PC ~
$ ./name_io
Illegal instruction

Acer@Acer-PC ~
$

share|improve this question

edited Mar 25 at 23:37

Peter Cordes

147k2121 gold badges233233 silver badges377377 bronze badges

asked Mar 25 at 22:26

user366312user366312

4,0884747 gold badges162162 silver badges321321 bronze badges

share|improve this question

edited Mar 25 at 23:37

Peter Cordes

147k2121 gold badges233233 silver badges377377 bronze badges

asked Mar 25 at 22:26

user366312user366312

4,0884747 gold badges162162 silver badges321321 bronze badges

edited Mar 25 at 23:37

Peter Cordes

147k2121 gold badges233233 silver badges377377 bronze badges

edited Mar 25 at 23:37

Peter Cordes

147k2121 gold badges233233 silver badges377377 bronze badges

asked Mar 25 at 22:26

user366312user366312

4,0884747 gold badges162162 silver badges321321 bronze badges

asked Mar 25 at 22:26

user366312user366312

4,0884747 gold badges162162 silver badges321321 bronze badges