Assembly · MIPS · x86-64 · ARM · LC-3 · From $20
Do My Assembly Homework
Assembly is the one language with no compiler to hide behind. You are the register allocator and the calling convention. We write your code to the exact ISA your course grades, register-correct and traceable instruction by instruction in the simulator your TA single-steps.
Register-correct · Convention-clean · Pay 50% after it steps
What we cover in Assembly
The simulator your course grades you in
Assembly is graded by stepping the machine, not by reading clean output. The TA assembles your .asm or .s in MARS, runs it under valgrind's low-level cousin GDB, or disassembles a binary with objdump -d. We write to the same 12 tools, so the registers hold what the grader expects when it single-steps.
Under the tools sits the work itself. The register file: $t0-$t9, $s0-$s7, and $a0-$a3 on MIPS, %rax, %rdi, %rsi, %rsp on x86-64, X0-X30 and SP on AArch64. The calling convention, the caller-saved versus callee-saved split where students lose the most points. The stack: $sp and %rsp, push and pop, jal, call, and ret. And the syscall trap that prints and exits, with $v0 = 1 to print an integer, 4 for a string, and 10 to exit in MARS. Get the register and the convention right and the grade follows.
Assignment types we cover
Do my Assembly assignment, whatever the lab is
Four Assembly deliverables make up most of the coursework we see. A written MIPS program runs 60 to 250 lines across one to three files, an LC-3 subroutine runs 30 to 120, and the Bomb and Attack labs are read-and-exploit rather than write-from-scratch.
Write a MIPS program in MARS
The intro-organization staple. We read integers with syscall, compute the result the spec asks for, factorial, GCD, an array sum, or a grayscale pass over pixels using integer division, then print it. The code single-steps clean in MARS or QtSPIM, with $v0 loaded before every syscall and the calling convention enforced on any subroutine.
Implement a recursive subroutine that follows the calling convention
A recursive factorial, mod, or fibonacci that saves $ra and every callee-saved register on the stack in the prologue and restores them in the epilogue. The GT CS2110 LC-3 "recursive mod" assignment is the canonical version. The MIPS form uses the same skeleton, and the stack is balanced so jr $ra returns to the right caller every time.
Reverse-engineer and defuse a binary (Bomb Lab)
The CMU 15-213 Bomb Lab. We disassemble the stripped x86-64 binary with objdump -d, read the assembly for each of the 6 phases, step through it in GDB, and supply the string that defuses each phase without detonating. This is read-and-trace work, not write-from-scratch, and you get the reasoning for the viva.
Construct a buffer-overflow or ROP exploit (Attack Lab)
The 15-213 Attack Lab, 5 exploits across ctarget and rtarget. We craft the byte-level injection strings for the 3 code-injection phases on ctarget and the 2 return-oriented-programming chains on rtarget, with the stack layout and instruction encoding worked out. The ARM track reimplements the same skeletons in AArch64 on a Raspberry Pi with gcc and as.
How Assembly assignment help works
Assembly assignment help built around the simulator
The process is the deliverable. You send the brief, the ISA, and the simulator name. We quote one fixed price, and you pay half to start. What comes back single-steps the way your TA steps it.
Exact ISA and syntax match
We write to the ISA you name, MIPS32, x86-64, ARMv7, AArch64, LC-3, or RISC-V, in the AT&T or Intel syntax your assembler reads. No dialect drift between our file and the grader.
Single-step gate
Before delivery the program single-steps clean in the named simulator on the spec input, reaching the exit syscall with the registers correct. Output-right-but-convention-wrong still fails, so a clean trace is the bar we ship to.
The viva sheet
You get a short sheet answering what is in a register after a given instruction and why it is callee-saved, plus two or three questions a TA is likely to ask. The code is commented so the explanation is yours.
Pay 50 percent after it steps
You pay the first 50% to start and the other 50% only after it runs clean in your simulator. Revisions stay free for 7 days.
Assembly homework help by failure mode
The six Assembly bugs we fix every week
Most Assembly homework help is one of six named failures. Each has a known fix mechanism and the simulator or debugger that catches it when you single-step.
Clobbered return address, lost $ra
A subroutine calls another with jal or call without saving $ra first, so jr $ra or ret jumps into the wrong code. We push $ra onto the stack in the prologue of every non-leaf subroutine and pop it before returning, so the return path lands where the caller expects.
Calling-convention violation
A callee-saved register ($s0 to $s7, %rbx, X19 to X28) overwritten without preserving it, which corrupts the caller. We save every callee-saved register the routine touches on entry, restore it on exit, and pass arguments only in the ABI registers, $a0 to $a3 on MIPS or %rdi, %rsi, %rdx on x86-64.
Unbalanced stack or wrong $sp adjustment
Pushing N words and popping a different count, or missing the 16-byte alignment at call on x86-64, so ret reads a garbage return address and segfaults. We match every addi $sp, $sp, -k with an addi $sp, $sp, k, and keep %rsp 16-byte aligned before each call.
Wrong syscall code or wrong argument register
The integer to print left in the wrong register, or $v0 not loaded before syscall, so MARS prints the address of a block instead of the value. We load the syscall code into $v0 and the operand into the convention register, $a0, immediately before syscall.
No exit syscall, fall-through into data
Execution runs off the end of main into the next bytes or the .data section instead of exiting, landing on an invalid address. We end every program path with the exit syscall, li $v0, 10 then syscall in MARS, so the machine stops cleanly at the right point.
Branch, offset, and delay-slot errors
A <= comparison built with the wrong branch instruction, a miscalculated branch target, or a MIPS branch-delay slot ignored so the instruction after the branch runs unexpectedly. We single-step the branch in MARS or GDB to confirm the target, and account for the delay slot per the simulator setting.
Where Assembly is taught
We write to your course, not a generic style
Assembly shows up at three levels, each with a different ISA and a different grading convention. Tell us the course and we match it, from a MIPS-in-MARS intro to a CMU systems lab read through GDB to a bare-metal ARM target on a Pi.
Intro computer organization (MIPS, LC-3)
UC Berkeley CS 61C "Machine Structures" runs MIPS and RISC-V. Georgia Tech CS 2110 grades LC-3 subroutines, including the recursive mod that follows the LC-3 calling convention. Many intro courses built on Patterson and Hennessy assemble in MARS, SPIM, or QtSPIM. We write to the named simulator, because a program is graded by single-stepping it, not by reading its output.
Intro to computer systems (x86-64)
CMU 15-213 and 18-213 ship the Data Lab, the Bomb Lab, and the Attack Lab. UW CSE 351 and Cornell CS 3410 cover the same ground. Here the assembly is read through gdb and objdump and the exploits are built byte by byte, so the skill is tracing a stripped binary, not writing one from scratch.
Embedded and architecture electives (ARM)
Raspberry Pi ARM-assembly courses and Cortex-M microcontroller labs use the Keil toolchain for bare-metal targets and the Raspbian-hosted gcc and as for AArch64. We target the exact board, register file, and ABI in your brief, the same way we match a MIPS or x86-64 convention.
One grading rule carries across all three. The named simulator is the judge, so a program that prints the right answer while it violates the calling convention still loses points. A clean exit syscall is a hard requirement. Gradescope autograders assemble and run the submission against hidden register and output tests, and MOSS reads MIPS and x86 assembly directly across the whole class. That last point is why we write each delivery from scratch for your brief, never from a template another student could also receive.
# before: recursive factorial returns garbage, jr $ra jumps into .data
# after: prologue saves $ra + $s0 on the stack, epilogue restores them
#
# MARS single-step: $v0 = 120 for factorial(5)
# $sp balanced, exit via li $v0, 10 ; syscall no fall-through
#
# "I had clobbered $ra in the recursion. They fixed it and wrote me
# the line about why $ra has to live on the stack, for the viva."How it works and pricing
One fixed price per Assembly assignment, from $20
Send the assignment PDF, the rubric, the ISA, and the simulator name. A developer who works in assembly reads the brief and sends one price, priced by complexity, with no rush fees. You pay half to start and the rest after it single-steps clean.
Whole lab or one subroutine
Help with a full Assembly lab, or just one subroutine
Send the whole lab and we deliver every .asm or .s file, written to the ISA and the simulator your course grades. Send one broken subroutine, one segfault, or one bomb phase, and we scope it to that. Single-problem debugging is the cheapest tier, so a single wrong register or a single unbalanced stack does not cost a full rewrite. Whichever the size, it single-steps clean in the simulator your course uses.
Assembly homework help
Assembly questions, answered
The questions Assembly students ask before they send a brief, from the ISA and the simulator to the calling convention and the Bomb Lab. Want help with one Assembly problem, like a single segfault, one wrong register, or one bomb phase? That is the cheapest tier, and the answers below cover it.
Which assembly do you write, MIPS, x86, ARM, or LC-3? +
All of them, plus RISC-V. Tell us the ISA, the syntax (AT&T or Intel), and the simulator your course grades in, MARS, QtSPIM, GDB, or an LC-3 tool, and we write to that exact target. The register set and the calling convention are the parts that change between them, and we match each one.
Will it run correctly in MARS or QtSPIM? +
Yes. We assemble and single-step the program in the exact simulator your course uses, watching the registers and memory change instruction by instruction. You pay the second 50% only after it runs clean on the spec's input and reaches the exit syscall.
Can you make my subroutine follow the calling convention? +
Yes. We save $ra and every callee-saved register in the prologue, balance the stack, and restore them in the epilogue, so a recursive subroutine returns correctly. Output-correct code that violates the convention still loses points, so we get the register discipline right, not just the printed answer.
Can you defuse my Bomb Lab or build my Attack Lab exploit? +
Yes. We disassemble with objdump -d, step through each phase in GDB, and supply the defusing strings for the Bomb Lab or the byte-level ROP and code-injection exploits for the Attack Lab. The reasoning comes written out, so you can explain what each phase checks and how the stack was set up.
Why does my MIPS program segfault at the end? +
Usually a missing exit syscall, so execution falls past your code into the data section and lands on an invalid address. We add li $v0, 10 then syscall (or the right trap for your ISA) so it exits cleanly, then trace any remaining fault by single-stepping in the simulator.
Can you convert AT&T syntax to Intel syntax, or the reverse? +
Yes. We translate operand order, the % and $ register and immediate prefixes, and the directives between GAS and AT&T and NASM and Intel, so the same program assembles in your toolchain. Send the file and the assembler it has to build under, and we match the dialect.
Can I explain the register state in my viva? +
Yes. Each delivery includes a short sheet answering what is in a given register after a given instruction and why that register is callee-saved, plus two or three questions a TA is likely to ask. The code is commented line by line so the explanation is yours to give.
Can you write ARM assembly for my Raspberry Pi assignment? +
Yes. AArch64 or ARMv7 with the Pi gcc and as toolchain, or Keil uVision for a Cortex-M target, written to the exact board and OS in your brief. The register file there is X0 to X30 with SP, and we follow that ABI the same way we follow the MIPS and x86-64 conventions.
Related languages
Studying a neighbor of Assembly?
The closest neighbor. The same systems courses, CS3650, CS107, CSE 351, and CS 3410, pair C with assembly, so the two often land together. Keep them separate: C is manual heap memory and Valgrind, Assembly is registers and the simulator.
One level up the abstraction stack. Useful when the assignment asks you to compare the assembly the compiler emits against code you wrote by hand, since C++ hides the registers the compiler is still allocating.
The modern systems-language sibling. Land here if your course lets you choose between hand-written assembly and a memory-safe systems language for the low-level work.
Need the broader picture first? Start with our Programming Homework Help hub for the generic-intent walkthrough.
Send your Assembly brief and get a fixed quote
Upload the assignment, the ISA, and the simulator name. The first reply is free, and you pay nothing until you approve the price.