Good morning. I do not have any data on frequency use of opcodes. I am doing bootloader work and find asmjit convenient. In the end I ended up doing something different for this push imm16, still it is an official instruction, I would hate not to see it included. AMD64 Architecture Programmer's Manual, Volume3, page 464. AMD64 Architecture Programmer's Manual, Volume3, Section 1.2.2 If you want I can work on the patch and then all you have to do is merge it. From what I can see there's two prefix bytes, 0x66 for operand size override, and 0x67 for address size override. Is this what a.emit() meant for? Sent from [Proton Mail](https://proton.me/mail/home) for iOS

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On Mon, Jan 13, 2025 at 02:40, Petr Kobalicek ***@***.***(mailto:On Mon, Jan 13, 2025 at 02:40, Petr Kobalicek <<a href=)> wrote: I'm afraid this particular form is missing in asmjit. When you push onto the stack, the immediate is sign extended to the register size (either 32 or 64 bits depending on your target). 16-bit immediate pushes only push 16 bits, and there is no way to emit this in the current asmjit (you would have to assemble this instruction with db() calls). I will leave this open, but I'm not really sure how much useful this particular form is, as I have never seen it in use in practice. So, what is your use-case? — Reply to this email directly, [view it on GitHub](#461 (comment)), or [unsubscribe](https://github.com/notifications/unsubscribe-auth/ABNCTC2GAOOWMWLU6BRMOH32KLALXAVCNFSM6AAAAABVA2QNBWVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDKOBVHA4TCNZVGI). You are receiving this because you authored the thread.Message ID: ***@***.***>

How do I pushw()? #461

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