this will help Actually often you get an illegal instruction error not because your program contain an illegal opcode but because there is a bug in your program (e.g., a buffer overflow) that makes your program jumps in a random address with plain data or in code but not in the start of the opcode.
How can I write a single instruction to switch two values into a variable every time the instruction is being executed?
like below fixes the issue I'd like to write a single instruction to switch two values into a variable at every instruction execution; this is the generic case: having two values x1, x2 and i initialized to x1 or x2, switch i value between x1 and x2 at every instruction execution, i.e. i= x1, x2, x1 ...; or, if i is initialized to x2, i = x2, x1, x2, ...; , This is what you are looking for?
llvm - get the first instruction of the basic block referred to in the label field of instruction of type br
it should still fix some issue I found a way to do this with GDB: Interactive: $ gdb --pid 1566 (gdb) info symbol 0x7fe28b8a2b79 pselect + 89 in section .text of /lib/x86_64-linux-gnu/libc.so.6 (gdb) info symbol 0x5612550f14a4 copy_word_list + 20 in section .text of /usr/bin/bash (gdb) info symbol 0x7fe28b878947 execve + 7 in section .text of /lib/x86_64-linux-gnu/libc.so.6 Shows exactly what I wanted!
Whats the difference between a normal instruction and a fast instruction in java (e.g. aload and fast_aload)
With these it helps I printed out the executed bytecodes of a simple java program and noticed that some java instructions are fast_xxxx instead of the normal instruction. , So what exactly is the difference between these instructions?