INT (x86 instruction) - Wikipedia
INT is an assembly language instruction for x86 processors that generates a software interrupt. It takes the interrupt number formatted as a byte value. [1] When written in assembly language, the instruction is written like this: INT X. where X is the software …
What does "int 0x80" mean in assembly code? - Stack Overflow
2022年11月26日 · int 0x80 is the assembly language instruction that is used to invoke system calls in Linux on x86 (i.e., Intel-compatible) processors. http://www.linfo.org/int_0x80.html Share
x86 and amd64 instruction reference - felixcloutier.com
2024年2月18日 · x86 and amd64 instruction reference. Derived from the December 2023 version of the Intel® 64 and IA-32 Architectures Software Developer’s Manual. Last updated 2024-02-18. THIS REFERENCE IS NOT PERFECT. It's been mechanically separated into distinct files by a …
x86 instruction listings - Wikipedia
The x86 instruction set refers to the set of instructions that x86 -compatible microprocessors support. The instructions are usually part of an executable program, often stored as a computer file and executed on the processor.
What does "int 21h" mean in Assembly? - Stack Overflow
2017年4月24日 · int 21h means, call the interrupt handler 0x21 which is the DOS Function dispatcher. the "mov ah,01h" is setting AH with 0x01, which is the Keyboard Input with Echo handler in the interrupt. See: See:
INT (x86 instruction) - Wikiwand
INT is an assembly language instruction for x86 processors that generates a software interrupt. It takes the interrupt number formatted as a byte value.
INT n/INTO/INT3/INT1 — Call to Interrupt Procedure
The INT n instruction is the general mnemonic for executing a software-generated call to an interrupt handler. The INTO instruction is a special mnemonic for calling overflow exception (#OF), exception 4. The overflow interrupt checks the OF flag in the EFLAGS register and calls the overflow interrupt handler if the OF flag is set to 1.
assembly - What is the exact behaviour of INT instruction
2016年11月18日 · Try hooking int 08h (instead of 1ch) directly with your routine and you should notice a difference. In essence a timer interrupt reaches the PIC, triggers IRQ0 which executes interrupt vector 08h.
Anti-Debug: Assembly instructions
The following techniques are intended to detect a debugger presence based on how debuggers behave when the CPU executes a certain instruction. 1. INT 3. Instruction INT3 is an interruption which is used as a software breakpoint.
Programming in assembly language tutorial - GitHub
You learn about memory layout, instruction opcodes, instruction encoding, memory access, and so on. In this tutorial, I will cover the basics of programming the x64/AMD64 CPU in assembly language. As I progress, you will see how the CPU is really a glorified version of CARDIAC!
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