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digitalmars.D.learn - Can I make system calls directly from D?

reply rempas <rempas tutanota.com> writes:
I just wonder if I'm able to do system calls directly from D or 
If I have to create bindings from "unistd.h" from C
Jul 09
next sibling parent reply Ferhat =?UTF-8?B?S3VydHVsbXXFnw==?= <aferust gmail.com> writes:
On Friday, 9 July 2021 at 08:08:57 UTC, rempas wrote:
 I just wonder if I'm able to do system calls directly from D or 
 If I have to create bindings from "unistd.h" from C
I don't know if it covers what you want but, druntime has those definitions: https://github.com/dlang/druntime/blob/master/src/core/sys/posix/unistd.d import core.sys.posix.unistd; ... do stuff
Jul 09
parent rempas <rempas tutanota.com> writes:
On Friday, 9 July 2021 at 08:18:51 UTC, Ferhat KurtulmuĊŸ wrote:
 On Friday, 9 July 2021 at 08:08:57 UTC, rempas wrote:
 I just wonder if I'm able to do system calls directly from D 
 or If I have to create bindings from "unistd.h" from C
I don't know if it covers what you want but, druntime has those definitions: https://github.com/dlang/druntime/blob/master/src/core/sys/posix/unistd.d import core.sys.posix.unistd; ... do stuff
Yep! From my understanding, this is binding from C so at least I don't have to make them on my own. Thanks a lot for your time, have an amazing day!
Jul 09
prev sibling parent reply Dennis <dkorpel gmail.com> writes:
On Friday, 9 July 2021 at 08:08:57 UTC, rempas wrote:
 I just wonder if I'm able to do system calls directly from D or 
 If I have to create bindings from "unistd.h" from C
If with directly means 'without calling any C function' you can use inline assembly: ```D version(linux) void rt_sigreturn() { version(D_InlineAsm_X86_64) asm { naked; mov EAX, 15; syscall; } } ```
Jul 09
parent rempas <rempas tutanota.com> writes:
On Friday, 9 July 2021 at 08:28:25 UTC, Dennis wrote:
 On Friday, 9 July 2021 at 08:08:57 UTC, rempas wrote:
 I just wonder if I'm able to do system calls directly from D 
 or If I have to create bindings from "unistd.h" from C
If with directly means 'without calling any C function' you can use inline assembly: ```D version(linux) void rt_sigreturn() { version(D_InlineAsm_X86_64) asm { naked; mov EAX, 15; syscall; } } ```
This is the most "direct" way possible. However I should probably not mess with assembly at this point and use the built-in D header file for unistd. Thanks a lot for your time tho, have a great day!
Jul 09