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I am using Linux with x86 (64 bit to be precise). Is there a way I can get the address of the current instruction. Actually I want to write my own simplified versions of setjmp/longjmp. Here, R.. posted a simplified version of longjmp. Any idea how setjmp is implemented. A simplified version that is, without taking into account of exceptions and signals etc…
I believe in 64-bit code you can simply do
lea rax, [rip].The 32-bit idiom is: