Low-Level and Architecture Language

Assembly Language Homework Help

Q: Can you help with MIPS?

Yes. MARS and SPIM debugging, 5-stage pipeline analysis, hazard identification with timing diagrams, forwarding-vs-stalling decisions, and CPI calculations.

Annotated solutions for x86-64, ARM, MIPS, and RISC-V assignments, with stack-frame diagrams on every function and pipeline-timing tables on every hazard analysis. The most-deducted bug in Machine Structures and Computer Systems labs (Berkeley CS61C, CMU 15-213, U of T CSC258, Manchester COMP15111, NUS CS2100, IIT Bombay CS232) is a callee-saved register clobbered without a matching push, the exact failure mode our tutors annotate inline. Verified CS graduates from Purdue, Georgia Tech, U of Toronto, Manchester, NUS, and IIT, starting at $20 per task, 14-hour average turnaround.

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Named ISAs

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Machine Structures

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Why Assembly

Assembly at the university level

Topics covered

What we tutor in Assembly

x86-64 Assembly

Implementation patterns, named pitfalls, and the autograder cases that catch them in Assembly coursework.

MIPS & Pipeline

Five-stage pipeline (IF / ID / EX / MEM / WB) with hazard detection, forwarding paths, and stall-cycle counting per CS61C labs.

ARM & Embedded

AArch64 calling convention, NEON SIMD intrinsics, interrupt handlers, and bare-metal memory-mapped IO for microcontroller assignments.

Stack Frames & Calling Conventions

Implementation patterns, named pitfalls, and the autograder cases that catch them in Assembly coursework.

System Calls & I/O

Implementation patterns, named pitfalls, and the autograder cases that catch them in Assembly coursework.

Reverse Engineering

Implementation patterns, named pitfalls, and the autograder cases that catch them in Assembly coursework.

Pair Assembly with

Operating Systems Pointers

Full overview

Assembly in CS curricula

Assembly provides a one-to-one mapping between source code and CPU instructions. Courses in computer architecture, systems programming, and reverse engineering use it to teach instruction set architectures, pipeline stages, memory hierarchy, and the hardware-software interface. Students encounter four major dialects in undergraduate work.

x86-64 is the desktop and server architecture, taught in Systems Programming (Stanford CS107, U of T CSC209, Manchester COMP30023, NUS CS2106, IIT Bombay CS347) and Assembly Programming (CS261 in the US, U of T CSC258, Edinburgh INFR10001, NUS CS2100) with the System V AMD64 ABI for Linux and macOS. ARM (AArch64) is the mobile and embedded architecture, taught in Embedded Systems sequences (Purdue CS380, U of T ECE361, Manchester COMP22712, NUS CS3237, IIT Madras CS6240) with the AArch64 calling convention. MIPS is the teaching ISA in Machine Structures (Berkeley CS61C, Purdue CS250, U of T CSC258, NUS CS2100, IIT Bombay CS232) using the MARS or SPIM simulator with a 5-stage pipeline model.

RISC-V is the newer teaching ISA in updated Machine Structures sequences (Berkeley CS61C since 2018, ETH Zurich Digital Design and Computer Architecture, IIT Madras CS3100) with RV32I base plus M, A, F, and D extensions. Computer Systems (CMU 15-213, U of T CSC369, Edinburgh INFR10063, NUS CS3210, IIT Delhi COL216, MIT 6.106) use x86-64 for the bomblab, attacklab, and proxylab against course-specific autograders. Systems Programming (Stanford CS107) covers the assembly-to-C correspondence with hand-written x86-64 alongside C source.

Our assembly tutors deliver code with every instruction commented at the architectural level: which register it reads, which it writes, which flags it sets, why it appears at that point in the code. Stack frame diagrams accompany every function. Pipeline timing diagrams with forwarding paths and stall cycles accompany every hazard-analysis assignment.

The CSHH bench for Assembly draws on tutors with depth in architecture-level performance work (James Okafor, Purdue BS, kernel-security shop, x86-64 and ARM64 specialist, cycle-accurate timing) and algorithmic-with-Big-O thinking (Sarah Chen, Georgia Tech PhD, complexity analysis that translates to instruction count).

Where Students Get Stuck

Six named Assembly failure modes

Callee-saved register clobbered

Writing to rbx, r12-r15, rbp, or rsp without pushing first corrupts the caller stack on return. The crash surfaces 3 call sites later. We add push/pop pairs at function entry/exit and document which registers are touched.

Red zone misuse on x86-64

The 128 bytes below rsp may be used as scratch in leaf functions only. Calling anything (syscalls included) invalidates it. We allocate proper stack space with sub rsp, N before any call instruction.

Stack misalignment before call

The System V AMD64 ABI requires 16-byte alignment of rsp before a call. Misalignment crashes SSE/AVX instructions inside the callee. We add a sub rsp, 8 (or similar) to align before the call.

Pipeline hazard misidentification

RAW data hazards require forwarding or stalling; WAW and WAR do not in single-issue pipelines. We draw the 5-stage diagram and label every hazard with its type and the required mitigation.

MIPS branch delay slot misuse

MIPS executes the instruction after a branch unconditionally. Students put a nop where a useful instruction would fit. We move an instruction from before the branch into the delay slot for performance.

Signed vs unsigned compare

JL and JG use the SF flag for signed; JB and JA use the CF flag for unsigned. Using the wrong pair produces correct-looking output that fails on negative or large-unsigned inputs the TA grader supplies.

Debugging Assembly code step by step with breakpoints, variable inspection, and step controls

How we work

Our Assembly approach

Every instruction annotated with its purpose, affected register contents, and high-level equivalent. Stack frame diagrams for every function showing parameter passing, callee-saved register preservation, local variable layout, and return address. Pipeline timing diagrams with forwarding paths and stall cycles for hazard-analysis assignments.

Tested on target architecture simulators (MARS, SPIM, QEMU for ARM and RISC-V, gdb plus objdump for x86-64). Intel and AT&T syntax for x86 depending on course preference. Step 1: read the ISA spec section relevant to the assignment first.

Step 2: draft the assembly by hand on paper, name every register usage, label every basic block. Step 3: type it in and assemble with the course-required tool (NASM, GAS, MARS, or simulator). Step 4: run under gdb with set disassembly-flavor intel (or att) and step through instruction-by-instruction.

Step 5: validate against the course autograder format before delivery.

What you receive

Autograder and artifact bundle

Every Assembly delivery ships with the .s or .asm source files in the directory layout your course expects, a Makefile or build script matching the autograder format (Berkeley CS61C, Stanford CS107, CMU 15-213, U of T CSC258, Manchester COMP15111, NUS CS2100, IIT CS232, MARS or SPIM simulator, or QEMU), a SOLUTION.md with the design rationale and Big-O analysis per function (where applicable), and a CHECKLIST.md mapping each rubric item to where it is satisfied. The bundle adds a stack-frame diagram (ASCII or rendered) for every function, a pipeline timing table for hazard-analysis assignments, and a 5-bullet oral-defense brief covering the 3 most likely TA questions about your register usage or calling convention.

Where It Appears

Assembly in University Curricula

	Course Context	CSHH Coverage
Machine Structures (Berkeley CS61C, U of T CSC258, Manchester COMP15111, NUS CS2100, IIT Bombay CS232, ETH Zurich Digital Design and Computer Architecture)	MIPS in the early labs with MARS and Venus simulators, RISC-V in the later projects. Pipeline lab grades forwarding, stalling, and branch prediction with CPI calculations.	Course-specific brief
Introduction to Computer Systems (CMU 15-213, U of T CSC369, Edinburgh INFR10063, NUS CS3210, IIT Delhi COL216, MIT 6.106)	x86-64 across bomblab (reverse engineering with gdb and objdump), attacklab (buffer overflow exploitation with ROP), and proxylab (concurrent HTTP server in C with inline assembly probes).	Course-specific brief
Systems Programming (Stanford CS107, U of T CSC209, Manchester COMP30023, NUS CS2106, IIT Bombay CS347)	Hand-written x86-64 alongside C source. System V AMD64 calling convention, callee-saved registers, stack frame layout, and the red zone.	Course-specific brief
Computer Architecture (Purdue CS250, U of T CSC382, Manchester COMP35112, Edinburgh INFR10001, NUS CS3220, IIT Bombay CS422)	Pipelining, hazard detection, forwarding paths, branch prediction (static and dynamic), cache design (direct-mapped, set-associative, fully associative), and CPI calculation.	Course-specific brief
Assembly Programming (CS261 in the US, U of T CSC258, Edinburgh INFR10001, NUS CS2100, IIT Madras CS3100)	x86-64: MOV, LEA, arithmetic with flags, control flow with conditional jumps, stack operations (push, pop, call, ret), and system calls via SYSCALL on Linux x86-64.	Course-specific brief
Embedded Systems (Purdue CS380, U of T ECE361, Manchester COMP22712, NUS CS3237, IIT Madras CS6240, ETH Zurich Embedded Systems)	ARM AArch64 register file, barrel shifter, conditional execution, Thumb instructions, and interrupt handlers for Cortex-M bare-metal programming.	Course-specific brief

Advanced Topics

Graduate-level Assembly we cover

Pipeline Hazard Analysis

RAW, WAR, and WAW data hazards, control hazards, structural hazards, forwarding paths, stall bubbles, and CPI calculation with full 5-stage timing diagrams.

Reverse Engineering & Binary Analysis

Analyzing binaries without source: calling convention recognition, compiler pattern identification, and control flow reconstruction with objdump, gdb, radare2, and Ghidra.

SIMD & Vector Instructions

SSE, AVX2, AVX-512 on x86, NEON on ARM, RVV on RISC-V. Vector register usage, alignment requirements, and 4 to 8x performance improvements in numerical computing.

Calling Conventions & ABI

System V AMD64 ABI for Linux and macOS, Microsoft x64 for Windows, AArch64 PCS for ARM, and the RISC-V ELF psABI. Argument registers, caller-saved and callee-saved, stack alignment, red zone, with stack frame diagrams.

Sample Output

Idiomatic Assembly we ship

Assembly sample

; x86-64 Fibonacci (NASM syntax, System V AMD64 ABI)
section .text
global fibonacci

fibonacci:
    cmp rdi, 1
    jle .base
    push rbx                ; callee-saved, must preserve
    mov rbx, rdi

    dec rdi
    call fibonacci          ; fib(n-1)
    push rax

    lea rdi, [rbx - 2]
    call fibonacci          ; fib(n-2)
    pop rbx
    add rax, rbx
    pop rbx                 ; restore caller's rbx
    ret
.base:
    mov rax, rdi
    ret

IDE workspace showing Assembly code with file tree, syntax highlighting, and minimap

Tools & Environment

Tools we use for Assembly

NASMGASGDBMARSSPIMQEMUobjdumpradare2GhidraRISC-V Toolchain

Sample Projects

Recent Assembly deliveries

Recursive Fibonacci in x86-64

Proper stack frames with rbp prologue, callee-saved register preservation (rbx pushed and popped), and pipeline analysis with cycle-count estimation.

String Operations Library (MIPS)

strlen, strcmp, strcpy, strcat with null termination, boundary checking, and syscall I/O via $v0 register-based system call numbers.

Sorting Algorithm in ARM

Bubble sort and insertion sort with AArch64 conditional execution, barrel shifter for fast multiplication by constants, and memory-mapped UART output.

Simple Calculator (x86-64)

Integer arithmetic with string-to-int and int-to-string conversion routines. Handles negative numbers via two's complement and overflow detection with the OF flag.

Tutors who cover this language

Verified Assembly tutors

James O., BS CS

BS CS

x86-64 assembly (System V AMD64 calling convention, SSE/AVX vector instructions)ARM64 assembly (AArch64 calling convention, NEON intrinsics)RISC-V assembly (RV32I, RV64I, M and F extensions) +5 more

620+ assignments completed

Sarah C., PhD

PhD CS

graph algorithms (BFS, DFS, Dijkstra, Bellman-Ford, MST)dynamic programming (top-down memoization, bottom-up tabulation)PyTorch autograd debugging +4 more

1,200+ assignments completed

FAQ

Assembly homework help, frequently asked

Can you help with MIPS?

Yes. MARS and SPIM debugging, 5-stage pipeline analysis, hazard identification with timing diagrams, forwarding-vs-stalling decisions, and CPI calculations.

Do you support x86-64?

Both NASM (Intel syntax) and GAS (AT&T syntax). System V AMD64 ABI for Linux and macOS, Microsoft x64 for Windows, proper stack frames, and GDB instruction-level debugging.

Can you help with reverse engineering?

Binary analysis with objdump, gdb, radare2, and Ghidra. Control flow reconstruction, calling convention recognition, compiler pattern identification, and CTF binary exploitation challenges.

Do you help with pipeline hazards?

Timing diagrams with full 5-stage Fetch-Decode-Execute-Memory-Writeback view, RAW/WAR/WAW identification, forwarding vs stalling decisions, and CPI calculations.

Can you help with ARM?

AArch64 register file, barrel shifter for fast multiplication, conditional execution with predicates, Thumb instructions for code-density-sensitive embedded work, and bare-metal Cortex-M programming.

Do you explain calling conventions?

System V AMD64 ABI and Microsoft x64 for x86-64, AArch64 PCS for ARM, RISC-V ELF psABI for RV32 and RV64. Argument registers, caller-saved vs callee-saved, alignment, and red zone.

Can you help with cache analysis?

Hit and miss rates for direct-mapped, set-associative (2-way through 16-way), and fully associative caches. Locality optimization, cache blocking for matrix multiplication, and access pattern tuning.

Do you support RISC-V?

RV32I and RV64I base instruction sets, standard extensions (M for multiplication, A for atomics, F and D for floating-point), Spike and QEMU simulators, and the riscv64-unknown-elf-gcc toolchain.

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