Sometimes your computer may send an asm int 3 debug message. There can be several reasons for this problem.
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INT 3
The INT3 instruction has become an instruction whose interrupt is used as a convenient software breakpoint. If the debugger is not present and is looking for an INT3 instruction, an EXCEPTION_BREAKPOINT (0x80000003) exception is thrown and the breakpoint handler is invoked. If a debugger is definitely present, control is not transferred to the exception handler.
INT3
The INT3 command is usually a one-byte command and is set for use by debuggers, who can temporarily override the use statement in a program to set mode breakpoint. The more general INT XXh instructions may well be encoded as two bytes. This makes it unusable in patch mapping (which can be byte long); See SIGTRAP.
What Is INT3?
December 28, 2005, 8:07 am #2
3.5.2. UseInvoking DDD For Call-level Debugging
The DDD build debugger provides a full GUI on top of another debugger (GDBin this case). It provides a convenient interface for displaying assembly code,Learn the registers and therefore execute the IA32 instruction. has becauseddd separate windows to view unmounted computers, save values andThe GDB prompt is usually easier to use than GDB during debugging.Assembly level.
How Do Debuggers Insert Breakpoints?
In practice, asking for recompilation when adding or removing a breakpoint is pointless. The debuggers replace the loaded image from the last executable memory and insert 3 “ints” that work at runtime. The typical steps a debugger takes to provide the user with direct breakpoint functionality are:
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