Low-Level and Architecture Language

Assembly Language Homework Help

Q: Can you help with MIPS assembly homework?

Yes. MARS and SPIM debugging, 5-stage pipeline analysis, hazard identification with timing diagrams, forwarding-versus-stalling decisions, and CPI calculations. The most common fix is a branch-delay-slot instruction executing unexpectedly: we move a useful instruction from before the branch into the slot instead of leaving a nop.

Annotated x86-64, ARM, MIPS, and RISC-V solutions, with a stack-frame diagram on every function and a pipeline-timing table on every hazard analysis. The single biggest deduction on a computer architecture assignment is a callee-saved register clobbered without a matching push and pop, the exact failure mode our tutors annotate inline. Verified CS graduates with ISA-level depth, from $20 per task, 14-hour average turnaround.

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420+

Assignments Solved

Named ISAs

14hr

Avg Turnaround

x86-64

Most Requested

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 in computer architecture 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 maps one source line to one CPU instruction, so it is the language a computer architecture course, a systems course, and a reverse-engineering assignment reach for when the goal is the hardware-software interface itself. Four dialects cover most undergraduate work. An x86-64 assignment grades the System V AMD64 ABI on Linux and macOS: argument registers, callee-saved versus caller-saved, the 16-byte stack alignment before a call, and the red zone in leaf functions.

A MIPS assignment runs in the MARS or SPIM simulator and grades the classic 5-stage pipeline (IF, ID, EX, MEM, WB), data hazards, forwarding, the branch delay slot, and CPI calculation. An ARM AArch64 assignment targets the mobile and embedded register file, the barrel shifter, conditional execution, Thumb encodings, and bare-metal Cortex-M interrupt handlers. A RISC-V assignment grades the RV32I or RV64I base set plus the M, A, F, and D extensions on the Spike or QEMU simulator.

Two assignment types cut across all four. A reverse-engineering assignment hands you a binary with no source and asks you to reconstruct control flow with objdump, GDB, radare2, and Ghidra, recognizing the compiler patterns and calling conventions a decompiler leaves behind. A binary-exploitation lab teaches buffer-overflow and return-oriented-programming defenses, scripted with pwntools against a hardened target.

Our assembly tutors comment every instruction at the architectural level: which register it reads, which it writes, which flags it sets, and why it appears at that point. A stack-frame diagram accompanies every function. A pipeline timing diagram with forwarding paths and stall cycles accompanies every hazard analysis.

The CSHH bench for Assembly pairs verified CS graduates with ISA-level depth in x86-64 and ARM64 performance work and tutors who carry instruction-count and Big-O reasoning into the disassembly.

Where Students Get Stuck

Six named Assembly failure modes

Callee-saved register clobbered

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

Red zone misuse on x86-64

The 128 bytes below rsp are scratch space in leaf functions only. Calling anything, a syscall included, invalidates them. We allocate proper stack space with sub rsp, N before any call instruction.

Stack misalignment before call

The System V AMD64 ABI requires rsp 16-byte aligned before a call, and a misaligned stack segfaults inside libc when an SSE or AVX instruction runs in the callee. We add a sub rsp, 8 (or equivalent) to realign before the call.

Pipeline hazard misidentification

A RAW data hazard needs forwarding or a stall; WAW and WAR hazards do not, in a single-issue pipeline. We draw the 5-stage diagram and label every hazard with its type and the required mitigation.

MIPS branch delay slot misuse

MIPS runs the instruction after a branch unconditionally, so a nop wastes the slot and a misplaced instruction corrupts the result. We move a useful instruction from before the branch into the delay slot.

AT&T vs Intel operand-order confusion

GAS reads source-then-destination and NASM reads destination-then-source. A register pair copied in the wrong direction produces plausible output that fails on the first edge case. We pin the syntax to the assignment and verify operand order in GDB.

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

How we work

Our Assembly approach

Every instruction is annotated with its purpose, the register contents it changes, and the high-level equivalent. A stack-frame diagram per function shows parameter passing, callee-saved preservation, local-variable layout, and the return address. A pipeline timing diagram with forwarding paths and stall cycles accompanies every hazard analysis.

We assemble and test on the target: NASM or GAS plus GDB and objdump for x86-64, MARS or SPIM for MIPS, QEMU for ARM and RISC-V, Spike for the RISC-V golden reference. We write Intel or AT&T syntax to match the assignment. Step 1: read the ISA reference section the assignment depends on before writing a line.

Step 2: draft the assembly on paper, name every register usage, and label every basic block. Step 3: assemble with the required tool (NASM, GAS, MARS, or the simulator). Step 4: run under GDB with set disassembly-flavor intel (or att) and step instruction by instruction, watching the flags and the stack pointer.

Step 5: validate against the 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 assignment expects, a Makefile or build script matching the autograder format your brief specifies (a NASM or GAS build, a MARS or SPIM project, or a QEMU run target), a SOLUTION.md with the design rationale and an instruction-count or CPI analysis per function where it applies, and a CHECKLIST.md mapping each rubric item to where the code satisfies it. The bundle adds a stack-frame diagram (ASCII or rendered) for every function, a pipeline timing table for every hazard-analysis question, and a 5-bullet oral-defense brief covering the 3 questions a grader is most likely to ask about your register usage or calling convention.

Assignment Types

Assembly assignment types we cover

x86-64 register and calling-convention work

Functions written to the System V AMD64 ABI with argument registers, callee-saved preservation, 16-byte stack alignment, and the red zone, delivered with a stack-frame diagram. Named pitfall: a callee-saved register written without a push and pop, which corrupts the caller stack and crashes three call sites later; we add the matching push/pop and document every touched register.

MIPS pipeline and hazard analysis

MARS or SPIM programs plus 5-stage pipeline analysis: data hazards, forwarding paths, stall bubbles, the branch delay slot, and CPI calculation with a full timing diagram. Named pitfall: a branch-delay-slot instruction executing unexpectedly, where a nop wastes the slot; we move a useful instruction from before the branch into it.

ARM and embedded assembly

AArch64 register-file work with the barrel shifter, conditional execution, Thumb encodings, and bare-metal Cortex-M interrupt handlers, tested under QEMU. Named pitfall: a NEON load with vld1q_f32 on a misaligned buffer that silently returns wrong results on older Cortex-A; the fix is an alignas(16) buffer.

RISC-V assignments

RV32I and RV64I base instruction sets plus the M, A, F, and D extensions, run on the Spike golden-reference simulator or QEMU with the riscv64-unknown-elf-gcc toolchain. Named pitfall: building with -march=rv64imafdc but running on a simulator configured rv64imc, which raises an illegal-instruction trap on the float ops; we match the -march flag to the simulator ISA.

Reverse engineering and binary analysis

Reconstructing control flow from a binary with no source using objdump, GDB, radare2, and Ghidra: calling-convention recognition, compiler-pattern identification, and a P-code or disassembly view. Named pitfall: a misidentified function boundary in Ghidra that hides the real entry point; we mark it manually with Create Function and re-run analysis.

SIMD vectorization (SSE, AVX, NEON)

Intel SSE and AVX intrinsics via immintrin.h and ARM NEON via arm_neon.h for matrix-multiply and image-convolution kernels, with alignment requirements and 4 to 8x scalar speedups documented. Named pitfall: an AVX-to-AVX-512 transition that costs 70+ cycles without vzeroupper; we add it at function boundaries.

Boot loaders and bare-metal assembly

A 512-byte MBR boot loader transitioning from 16-bit real mode to 32-bit protected mode: zeroing segment registers, setting the stack, loading the GDT with lgdt, and the far jump after setting CR0 bit 0, tested in QEMU. Named pitfall: a missing 0x55 0xAA boot signature at offset 510, which makes the firmware skip the sector silently; we verify the magic bytes in the linker output.

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

NASMGASGDBobjdumpMARSSPIMQEMUradare2GhidrapwntoolsRISC-V SpikeOpenOCDWebAssembly (wabt)seccomp (syscall filtering)

Sample Projects

Recent Assembly deliveries

Recursive Fibonacci in x86-64

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

String Operations Library in MIPS

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

Sorting Routine in ARM AArch64

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

Integer Calculator in 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 assembly homework?

Yes. MARS and SPIM debugging, 5-stage pipeline analysis, hazard identification with timing diagrams, forwarding-versus-stalling decisions, and CPI calculations. The most common fix is a branch-delay-slot instruction executing unexpectedly: we move a useful instruction from before the branch into the slot instead of leaving a nop.

Do you support x86-64 calling-convention assignments?

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. We catch the callee-saved register clobbered without a push and pop, the single biggest source of a crash that surfaces three call sites away from the real bug.

Can you help with a reverse-engineering assignment?

Binary analysis with objdump, GDB, radare2, and Ghidra. Control-flow reconstruction, calling-convention recognition, and compiler-pattern identification on a binary with no source. We mark misidentified function boundaries by hand with Create Function so the real entry point stops hiding.

Do you help with pipeline hazard analysis?

Timing diagrams with the full 5-stage IF, ID, EX, MEM, WB view, RAW, WAR, and WAW identification, forwarding-versus-stalling decisions, and CPI calculations. We label every hazard with its type so the wrong mitigation never gets applied to a WAW or WAR hazard that needs none.

Can you help with ARM AArch64 assembly?

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

Do you explain calling conventions and the ABI?

System V AMD64 and Microsoft x64 for x86-64, the AArch64 PCS for ARM, and the RISC-V ELF psABI for RV32 and RV64. Argument registers, caller-saved versus callee-saved, 16-byte stack alignment, and the red zone, each with a stack-frame diagram.

Can you help with cache and memory-hierarchy 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 with the measured miss-rate change.

Do you support RISC-V assignments?

RV32I and RV64I base instruction sets, the standard extensions (M for multiplication, A for atomics, F and D for floating-point, C for compressed encodings), the Spike and QEMU simulators, and the riscv64-unknown-elf-gcc toolchain. We match the -march flag to the simulator ISA so the float ops do not trap.

Can you help with a buffer-overflow exploitation lab?

A binary-exploitation lab teaches code injection and return-oriented programming against a hardened target. We deliver a ROP-gadget workflow: ROPgadget for the gadget list, a gadget chain that loads the argument registers before a ret, and a pwntools script that packs the addresses little-endian. We pair it with GDB live-attach. Common bug: forgetting context.arch = "amd64" makes p64 default to 32-bit packing and corrupts the address; we set the context at the top of every script.

Do you help with pwntools CTF binary exploitation?

pwntools is the Python framework for binary exploitation. We deliver scripts using the core helpers: process for local binaries and remote for nc-style connections, recvuntil and sendline for I/O scripting, p32 and p64 for little-endian address packing, asm and disasm for inline shellcode via the Keystone and Capstone engines, and ROP() for automated chain construction. We pair with one_gadget for a single-call libc shell and gdb.attach for live debugging.

Can you help with a Ghidra reverse-engineering assignment?

Ghidra is the open-source reverse-engineering platform with a strong decompiler. We deliver workflows for function identification via the symbol tree, P-code analysis for the intermediate-representation view that normalizes x86, ARM, and MIPS to a common form, and scripting in Python or Java to rename functions in bulk or dump string cross-references to CSV. For binary patching we use the byte editor with the built-in assembler. Common bug: a misidentified function boundary hides the real entry point; we mark it manually with Create Function.

Do you support RISC-V Spike simulator assignments?

Spike is the golden-reference RISC-V ISA simulator. We deliver test workflows with spike --isa=rv64gc pk binary in proxy-kernel mode for ELF execution, debug mode with spike -d for instruction-level stepping, and the standard extensions (M for multiplication, A for atomics with lr.d and sc.d pairs, F and D for IEEE 754 floating-point, C for compressed 16-bit instructions, V for the vector extension). It pairs with QEMU for full-system emulation and OpenOCD for hardware bring-up. Common bug: building with -march=rv64imafdc but running on spike --isa=rv64imc raises an illegal-instruction trap on the float ops.

Can you explain two's complement and bit manipulation?

Two's complement representation, sign extension with MOVSX versus zero extension with MOVZX, and the flag combinations the signed jumps (JL, JG) and unsigned jumps (JB, JA) read. We trace a worked example where the same byte value produces different results under MOVZX and MOVSX, then show which jump pair the grader's negative and large-unsigned inputs require.

Do you help with inline assembly using GCC asm volatile?

GCC extended inline assembly via asm volatile with its four sections: the assembler template, output operands, input operands, and the clobber list. We deliver an rdtsc cycle-counter for microbenchmarking and a compiler-barrier macro (asm volatile("" ::: "memory")). Common bug: omitting the "memory" clobber lets the compiler reorder loads and stores across the asm block and produce wrong data on weakly-ordered ARM hardware; we add the clobber and confirm the ordering in the disassembly.

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