I have a lot of old code in the form:
FARPROC p[1024];
...
__asm {
jmp p[128];
}
This worked well for 32-bit applications, but upgrading to 64-bit where inline asm is no longer supported.
Is there an equivalent jmp function in C++?
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1201ProgramAlarm
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Jason
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9`FARPROC`? I'm glad I'm not in your shoes. – rwols Apr 24 '17 at 01:47
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Maybe goto [(at least with gcc)](https://gcc.gnu.org/onlinedocs/gcc/Labels-as-Values.html) – yar Apr 24 '17 at 02:10
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Put it out of its misery. – n. m. could be an AI Apr 24 '17 at 06:07
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You may want to edit the question to specify the compiler. I assume its MSVC's 64bit ASM limitation.. – Mikhail Apr 24 '17 at 09:22
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This question sounds pretty much the same as [this one](http://stackoverflow.com/q/6421433/2189500). There are some ideas there (including a reference to [threaded code](https://en.wikipedia.org/wiki/Threaded_code), but no silver bullets. – David Wohlferd Apr 24 '17 at 23:31
2 Answers
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While MSVC won't let you compile ASM, you can instead compile the ASM using MASM and then link against it. There is a fairly comprehensive example of how to do the complete setup here.
From what I can tell you're just trying to invoke a function, in which case invoking functions using the actual language might be a better avenue to consider.
Mikhail
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2IIRC `call` will push the return address onto the stack while `jmp` does not so I don't think you can simply treat it like a function. – uNiverselEgacy Apr 24 '17 at 04:17
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@MegaStupidMonkeys You are correct, jumping is not the same thing as a function call (unless that call gets inlined...), but basically the guy is jumping around code, which is the traditional purpose of functions! – Mikhail Apr 24 '17 at 05:03
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i didn't use it ever but there is goto function still.